2020-05-01 Tracking News

Contents on 1 May '20

Radar Astrometry -- one object
IAU Minor Planet Center
- NEOCP Activity -- 58 listings
- New MPECs -- sixteen MPECs
Observers -- 112 observers
Impact Risk Monitoring -- seven objects
Chronology

Asteroid/Comet Connection (A/CC) Resources:

Consolidated Risk Tables - the CRT page
Earth's Busy Neighborhood traffic page
Ephemerides for risk-listed objects & close passers
News archive (old) & news image catalog (discontinued)
Object Links - mainly for radar targets & close passers (mostly discontinued)
Observing Campaigns (old)

The latest A/CC news is available via framed access, RSS news feed, or redirection.

Navigation tips: Use the << and >> arrows on the menus for each regular section (Observers, Risks, etc.) to move to the previous and next day's news for that section. Use the Index menu item to access specific days through a calendar interface. To keep track of what's new each day, watch the Chronology section.

Radar Astrometry on 1 May '20

Radar observation of one object

The JPL Solar System Dynamics Group Radar Astrometry database has added or updated the following small-body radar observing work:

Data update noted at 2201 UTC when the database was dated 1 May

2020 HN5 (close passer) from Arecibo (April 30.10 velocity & May 1.09 velocity)

Photometry and some astrometry is needed for upcoming radar targets. See Arecibo and Goldstone schedules.

NEOCP Activity on 1 May '20

The MPC's NEO Confirmation Page has 58 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 58 objects listed. Of these, 34 were "one nighters." The Tracking News counted a total of 83 listings on the NEOCP on this day.

New MPECs on 1 May '20

Minor Planet Electronic Circulars

There were sixteen MPECs posted this day from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2020-J01 time-stamped "08:01 UT" - 2020 HR9 - see below
MPEC 2020-J02 time-stamped "08:03 UT" - 2020 HS9 - see below
MPEC 2020-J03 time-stamped "08:03 UT" - 2020 HT9 - see below
MPEC 2020-J04 time-stamped "08:04 UT" - 2020 HU9 - see below
MPEC 2020-J05 time-stamped "08:05 UT" - 2020 HV9 - see below
MPEC 2020-J06 time-stamped "11:38 UT" - 2020 HW9 - see below
MPEC 2020-J07 time-stamped "12:02 UT" - Daily Orbit Update - see below
MPEC 2020-J08 time-stamped "14:45 UT" - 2020 HX9 - see below
MPEC 2020-J09 time-stamped "14:47 UT" - 2020 HY9 - see below
MPEC 2020-J10 time-stamped "16:35 UT" - 2020 HZ9 - see below
MPEC 2020-J11 time-stamped "16:38 UT" - 2020 HA10 - see below
MPEC 2020-J12 time-stamped "17:31 UT" - 2020 HB10 - see below
MPEC 2020-J13 time-stamped "17:33 UT" - 2020 HC10 - see below
MPEC 2020-J14 time-stamped "20:36 UT" - 2016 XG18 - see below
MPEC 2020-J15 time-stamped "22:11 UT" - 2020 HD10 - see below
MPEC 2020-J16 time-stamped "22:19 UT" - Comet C/2019 Y4 (ATLAS)

MPEC 2020-J16 - "22:19 UT" - Comet C/2019 Y4 (ATLAS)

CK19Y04e C/2019 Y4-E (ATLAS) (i=45.1°, q=0.252 AU, Q=39.547 AU, TP=2020 May 31.16013 TT) from Baldone Obs. (April 20.83-85p9, 21.81-82p8, 22.81-83p8, 23.83-84p7 & 25.81-83p7), Dettelbach Vineyard Obs. (April 20.83-84p3 & 21.82-83p3), Olmen Obs. (April 20.84-89p3, 21.84-91p3, 23.87-92p3 & 25.87-92p3), Great Shefford Obs. (April 20.86-88p2 & 22.89-90p2), Chelmsford Obs. (April 20.91-92p2, 21.89-91p3, 24.92-93p2, 25.91-92p2 & 26.87-88p2), Petit Jean Mtn. South Obs. (PJMSO) (April 21.08-09p6 & 26.11p6), Brixiis Obs. (April 21.86-92p5, 22.88-93p5, 23.88-90p4, 24.91-93p3, 25.90-92p5 & 26.90-92p3), Al Sadeem Obs. (April 22.66-70p4 & 24.66-69p3), Moletai Obs. (April 22.81p4 & 25.87-88p6), Buchloe Obs. (April 22.83-85p8), San Vito Obs. (April 22.86-89p3, 23.83-84p5, 24.80-82p4, 25.81-82p4 & 26.84-85p4), Tarbatness Obs. (April 22.91-93p3, 23.93-94p3 & 24.93-94p3), ATLAS Mauna Loa (April 23.27-29p4), Fushan Obs. (April 23.51-54p2), Gravina Obs. (April 23.78-79p2), Berthelot Obs. (April 23.81-84p3), Sencelles Obs. (April 23.82-86p6 & 24.82-86p6), Schiaparelli Obs. (April 23.87-90p3), Koksijde Obs. (April 23.89-91p3), Maisoncelles Obs. (April 23.90-94p3 & 25.94-96p3), Costa Teguise Obs. (April 24.88-89p3), Masquefa Obs. (April 25.84-89p3), program code 2 via Slooh.com Canary Islands Obs. (April 25.87-90p15), Al-Fulaij Obs. (April 26.70-71p4), and Terrassa Obs. (April 26.92p3)
CK19Y04d C/2019 Y4-D (ATLAS) (i=46.1°, q=0.250 AU, Q=383.104 AU, TP=2020 May 31.12865 TT) from Cardiff Obs. (April 9.02p2, 11.84p1 & 11.99p1), Vulpecula Obs. (April 9.77-84p3, 11.83p1, 14.79-83p2 & 14.87p1), Celado Obs. (April 9.81p1), Sant Pere Obs. (April 9.84p1, 10.83p1, 11.87p1 & 14.88-89p2), 29PREMOTE Obs. (April 9.84p1 & 11.89p1), Gravina Obs. (April 9.90p1 & 11.77-78p3), San Vito Obs. (April 10.81p1 & 11.87p1), Starry Wanderer Obs. (April 10.88p1 & 11.81-82p6), Schmelz Obs. (April 10.90-94p2), Moletai Obs. (April 11.76p1), Sencelles Obs. (April 11.83p1), Glyn Marsh Obs. (April 11.87p1), Maisoncelles Obs. (April 11.88-90p4), Linhaceira Obs. (April 11.88-90p3), Clixby Obs. (April 11.95p1), Carpe Noctem Obs. (April 12.85p2), Costa Teguise Obs. (April 12.90p3), Plaskett 1.8m Telescope (April 13.19-20p5), Great Shefford Obs. (April 13.87-88p2 & 14.90-92p2), Golden Hill Obs. (April 13.87p1 & 16.86p1), Chelmsford Obs. (April 14.86-88p2), Northolt Branch Obs. (April 14.92p2, 15.93-95p5 & 16.92-93p2), KLENOT (April 15.80p1), PJMSO (April 16.09-10p3), Slooh.com CIO/code 2 (April 17.00p2), and Faulkes Telescope North (April 17.24p1 & 18.23p1)
CK19Y04c C/2019 Y4-C (ATLAS) (i=43.0°, q=0.264 AU, Q=26.867 AU, TP=2020 May 31.06039 TT) from Berthelot Obs. (April 6.85p1), Cardiff Obs. (April 6.91p1, 7.03p1, 8.85p6, 8.92-93p3, 9.02p2, 11.84-85p2 & 11.99p2), Vulpecula Obs. (April 7.77p1, 10.78p1, 10.82p1, 10.87p1, 11.78p1, 11.84-88p3 & 17.79p1), Starry Wanderer Obs. (April 7.84-85p4 & 10.88p3), Terrassa Obs. (April 7.87p1, 8.88p3, 9.82-83p3, 10.82p3, 11.82p1 & 11.88p2), Glyn Marsh Obs. (April 7.90p1 & 11.89-90p2), Al Sadeem Obs. (April 8.67-70p3, 9.66-71p4, 14.67-73p5 & 16.67-72p5), Gravina Obs. (April 8.78-80p3, 9.90-91p4 & 11.77-78p2), Sencelles Obs. (April 8.81-83p4, 9.81-84p7, 10.82-88p11 & 11.81-87p7), Saarbruecken Rastpfuhl Obs. (April 8.82p2), Celado Obs. (April 8.82p1), San Vito Obs. (April 8.82-84p4, 9.82-84p6, 11.87-89p5 & 16.82-85p3), Carpe Noctem Obs. (April 8.83p2 & 12.85p1), Oberfrauendorf Obs. (April 8.83-84p3, 11.82-84p5 & 16.81-85p4), Baldone Obs. (April 8.84p1, 9.80p2, 11.83-84p3 & 15.80p1), Montseny Obs. (April 8.84-88p5), Olmen Obs. (April 8.85p2, 9.85-90p3, 10.82-87p3, 11.83-88p3 & 17.87-88p2), Costa Teguise Obs. (April 8.86p1, 9.87-88p3, 10.89p3 & 11.86-87p3), Koksijde Obs. (April 8.87-89p2, 9.86-88p4, 10.85-88p4 & 11.84-86p3), Montcabre Obs. (April 8.89-90p2, 9.82-85p3, 10.87p1, 10.92-93p2 & 11.91-94p3), Tarbatness Obs. (April 8.90-91p2), Carmelita Obs. (April 9.80-83p3 & 11.82-83p3), Brignoles Obs. (April 9.80-83p2, 9.88p1, 10.82-85p3, 11.81-85p2 & 11.91p1), 29PREMOTE Obs. (April 9.83-85p4, 10.83-91p4 & 11.81-84p2), Sant Pere Obs. (April 9.84p2, 10.83p2 & 11.87-88p2), Schiaparelli Obs. (April 9.85-89p4, 10.85-88p4 & 11.90-94p4), Chante-Perdrix Obs. (April 9.85p2, 10.82-83p3 & 11.84-87p3), St. Saturnin les Avignon Obs. (April 9.86-88p3), Slooh.com CIO/code 2 (April 9.87-88p4 & 17.00p1), Northolt Branch Obs. (April 9.90-96p5, 10.94p2, 11.91-92p3 & 16.92-93p4), Sant Celoni Obs. (April 9.91-92p3), iTelescope Obs. Mayhill (April 10.22-23p3, 11.19p4, 12.18p3 & 17.17p2), Geisei Obs. (April 10.47p3), Zuben Obs. (April 10.82-83p7 & 17.84-85p2), Cancelada Obs. (April 10.82-86p23), Brixiis Obs. (April 10.84-89p4, 11.85-88p3, 16.92p1 & 17.85-88p3), Dettelbach Vineyard Obs. (April 10.84-85p3 & 11.81-83p3), Chelmsford Obs. (April 10.85-89p2 & 11.87-89p3), BSCR Obs. (April 10.85-86p2), Linhaceira Obs. (April 10.87p1 & 11.86-91p19), Spica Obs. (April 10.88-89p3 & 15.83-84p3), Golden Hill Obs. (April 10.89p1), PJMSO (April 11.06-08p6 & 16.09-10p6), Kurihara Obs. (April 11.46-47p3), Moletai Obs. (April 11.76p2, 11.82p3 & 16.87-88p2), Kant Obs. (April 11.83-85p2), Buchloe Obs. (April 11.83-84p6), Blanes Obs. (April 11.87-88p3), Kiev Comet Station (April 11.89-90p14), Maisoncelles Obs. (April 11.91p1), Clixby Obs. (April 11.94-95p5 & 16.94-95p3), Rolando Ligustri via iTelescope Obs. Mayhill (April 12.10-12p3), program code ">" (39) via iTelescope Obs. Mayhill (April 12.17-18p3), Great Shefford Obs. (April 13.87-88p2), program code 1 via UAS-ISON Obs. (April 14.10p3 & 15.11-12p4), KLENOT (April 15.80p4), MPC code 39 (April 15.84p1), and Faulkes North (April 17.24p1)
CK19Y04b C/2019 Y4-B (ATLAS) (i=45.4°, q=0.253 AU, Q=473.445 AU, TP=2020 May 31.02472 TT) from Maisoncelles Obs. (March 27.93p1 & April 11.88-91p5), Hoyerswerda Obs. (March 28.90p1), Vulpecula Obs. (March 29.80-83p3), iTelObs-Mayhill (March 31.23-26p5 & April 10.23p2), Al Sadeem Obs. (March 31.70-78p7, April 8.68p1 & 14.69p1), Koksijde Obs. (March 31.88p1, April 5.86-89p4, 6.87-91p4, 8.85-87p3 & 14.88-90p3), Carpe Noctem Obs. (April 1.83-85p2, 3.86-89p3 & 8.83p3), Northolt Branch Obs. (April 2.99p2, 3.96p1, 4.93p3, 5.94-95p3, 6.97-00p3, 14.91-92p3 & 15.93-95p3), Transit Dreams Obs. (April 3.09-16p13), Bernezzo Obs. (April 3.84-86p3), Spica Obs. (April 3.92p2), Montseny Obs. (April 4.83p1, 5.86p1 & 8.81-87p8), Sant Pere Obs. (April 4.84p1 & 14.89p1), Sant Celoni Obs. (April 4.85-86p2), Olmen Obs. (April 4.88p1, 5.87p1, 8.85p1, 14.85p1 & 16.84p1), Cardiff Obs. (April 4.90-02p9, 6.89-92p6, 7.03-04p3 & 13.98p1), Wishing Star Obs. (April 5.01-02p2 & 7.07p3), iTelObs-Mayhill/code ">" (39) (April 5.22p1 & 6.22p1), Ligustri/iTelObs-Mayhill (April 5.27p1), Hirao Obs. (April 5.45-46p3 & 7.46-49p3), Ageo Obs. (April 5.48p3), Moletai Obs. (April 5.82p2, 6.84p4 & 17.86-88p5), Montcabre Obs. (April 5.89p1, 5.94-96p2, 6.88-89p3, 8.88-90p2 & 14.84-85p2), MPC code G22 (April 5.94-95p4), Berthelot Obs. (April 6.79-85p3 & 6.91-93p2), Sencelles Obs. (April 6.80-84p5, 8.81-84p5, 9.84p1, 10.84p1 & 14.90-95p6), ROASTERR-1 (April 6.81p2), Chante-Perdrix Obs. (April 6.82-84p3, 7.83-84p3, 9.84-85p2 & 15.84p1), Schmelz Obs. (April 6.84p1 & 6.91p1), Chelmsford Obs. (April 6.84-88p3, 7.84-85p4, 8.84-86p5, 9.86-88p2, 11.87-89p3, 14.83-88p4, 15.86p2 & 19.95-96p2), Schiaparelli Obs. (April 6.85-87p3, 7.85-87p3, 8.85-90p3, 10.85-86p2, 15.93-96p3 & 16.87-93p3), West Park Obs. (April 6.86-88p4 & 6.94p1), Costa Teguise Obs. (April 6.86-89p3, 7.91-93p3, 8.86p3, 9.87p2 & 10.89p1), Brignoles Obs. (April 6.87-88p3, 7.85-87p3, 8.80-86p3, 9.80p1 & 15.82-84p2), Tarbatness Obs. (April 6.87-89p6 & 8.91-92p5), Clixby Obs. (April 6.87-89p6), Slooh.com CIO/code 2 (April 6.88-89p6), Glyn Marsh Obs. (April 6.91-93p3 & 7.89p1), Terrassa Obs. (April 6.91-92p6, 7.87-88p6 & 8.88p2), Brixiis Obs. (April 6.92-96p5, 7.83-85p2, 7.89-91p2, 8.89-91p4, 14.87p1, 15.87-90p4, 16.87-89p3 & 19.87-89p3), Great Shefford Obs. (April 6.99p1, 9.86-89p2, 10.88-92p2, 11.85-87p2, 13.87-88p2, 14.90-92p2 & 19.87-89p2), Kurihara Obs. (April 7.46-47p3), Sukagawa Obs. (April 7.51-53p3), Muensterschwarzach Obs. (April 7.79-82p7), Gravina Obs. (April 8.80p1 & 9.91p1), Saarbruecken Rastpfuhl Obs. (April 8.82p1 & 13.86p1), Oberfrauendorf Obs. (April 8.83-84p3 & 14.85-88p3), San Vito Obs. (April 8.84p1, 9.82-84p2, 14.81-82p3 & 15.82p3), Baldone Obs. (April 8.84-85p5, 9.80p2, 15.80-81p5, 17.84-87p4 & 18.83-84p2), St. Saturnin les Avignon Obs. (April 8.90-91p2 & 9.88p1), Geisei Obs. (April 9.47-49p3), Celado Obs. (April 9.81p1), 29PREMOTE Obs. (April 9.84p1 & 14.83-85p3), Golden Hill Obs. (April 10.89p1, 13.87p1, 14.88p1, 15.86p1, 15.91p1 & 16.86p1), Xingming Obs. #3 (April 11.75p1), Corner Obs. (April 11.90-91p2, 13.88p1 & 15.87p1), Nastro Verde Obs. (April 12.78-82p2), Plaskett 1.8m (April 13.19-20p5), Masquefa Obs. (April 14.81-84p2 & 14.88p1), Carmelita Obs. (April 14.83p1), El Manzanillo Obs. (April 14.84-85p3 & 15.83-84p2), Blanes Obs. (April 14.88p1), KLENOT (April 15.80p4), Collonges Obs. (April 15.81-85p2), Sormano Obs. (April 15.83p2), and Linhaceira Obs. (April 17.85-90p3)
CK19Y04a C/2019 Y4-A (ATLAS) from Kelmis Obs. (March 23.83-84p2, 24.84-85p2, 26.82-83p2, 27.81-82p2, April 1.85-88p2, 3.84-85p2 & 4.83p2), North Obs. (March 23.90-91p5), Montseny Obs. (March 26.80-85p14, 28.84-86p7, April 3.90-95p11, 4.83-86p6 & 5.83-87p9), Cardiff Obs. (March 27.92-98p6, April 13.85-86p3, 13.97-98p2 & 19.95p1), Carpe Noctem Obs. (March 28.86-91p2, 28.98p1, April 1.83-87p3, 3.86-89p3 & 18.86p2), Sant Celoni Obs. (March 29.03p1 & April 4.87p1), iTelObs-Mayhill (March 29.29-31p14, April 5.22p3, 6.18p3, 10.11p2, 15.17p3 & 17.17p1), Sencelles Obs. (March 29.79p1, April 3.81p3, 4.79-81p3, 4.86-89p6, 6.80-84p3 & 14.90-91p2), Foligno Obs. (March 29.83p1 & April 2.81-83p2), Olmen Obs. (March 29.89p1, 30.98-99p2, 31.85-88p3, April 1.84-87p3, 3.83-86p3, 4.86-88p3, 5.85-87p3, 12.83-89p4, 13.84-91p4, 14.87-89p2, 16.87-91p2, 17.86-95p5, 19.87-94p3 & 20.84-89p3), Slooh.com CIO/code 2 (March 30.04-07p6, 30.89p3 & April 1.90-91p15), Moletai Obs. (March 30.82p2, April 5.82p2, 17.87-89p4 & 18.86-87p9), iTelObs-Mayhill/code ">" (39) (March 31.26-28p2, April 5.22-23p2 & 6.21-22p2), Al-Fulaij Obs. (March 31.67-68p7), Dettelbach Vineyard Obs. (March 31.83-84p3, April 1.84p1, 2.80-82p3, 4.81-84p3 & 20.83-84p3), Chelmsford Obs. (March 31.86-88p2, April 5.84-90p4, 6.85-88p2, 9.84-88p5, 10.84-89p5, 11.87-89p3, 14.86-88p2, 19.96p1 & 20.91-92p2), Maisoncelles Obs. (March 31.90-94p3 & April 11.88-91p5), Northolt Branch Obs. (March 31.96p1 & April 2.99p1), PJMSO (April 1.16-17p6), Nonndorf Obs. (April 1.79-82p4), M57 Obs. (April 1.82-85p3), San Vito Obs. (April 1.84p1 & 14.81p1), Spica Obs. (April 1.88p1 & 3.92p3), Tarbatness Obs. (April 1.92-93p5, 2.90-92p4, 13.88-93p3, 13.97p1, 16.99-00p4 & 17.89-90p3), Hirao Obs. (April 2.49-52p3), Berthelot Obs. (April 2.78p1, 2.83p1, 2.87p1, 3.89-91p2 & 5.00-02p2), Celado Obs. (April 2.81-86p5 & 8.82p1), Chante-Perdrix Obs. (April 2.84p3, 6.82p1, 10.82-83p3, 11.85-86p2, 14.83-84p3, 15.84-85p2, 16.83p3 & 18.83-84p3), Uraniborg Obs. (April 2.84p5), Zuben Obs. (April 2.86-87p5 & 17.83-85p3), Clavier Obs. (April 2.89-91p14), Transit Dreams Obs. (April 3.08p1), Pan-STARRS 1 (PS1) (April 3.26-27p2), Kurihara Obs. (April 3.49-50p3), Sukagawa Obs. (April 3.53-55p3), El Manzanillo Obs. (April 3.81-83p5, 15.84p1 & 17.84p1), Schiaparelli Obs. (April 3.84-86p5, 6.86p1, 9.85-89p3, 10.87-88p2, 11.90-94p4 & 15.93-96p3), Bernezzo Obs. (April 3.84-85p2), 29PREMOTE Obs. (April 3.86-89p3, 4.83-87p5, 9.84-85p2 & 10.83-87p2), Montcabre Obs. (April 3.86-87p3, 5.89-94p5 & 14.86p1), Carmelita Obs. (April 3.88-91p3, 4.85-86p3, 5.81-82p3 & 14.81-85p2), Ageo Obs. (April 4.46-47p2), Sant Pere Obs. (April 4.84p2), Brixiis Obs. (April 4.85-88p4, 5.85-88p4, 6.92-96p4, 7.83p1, 13.82-87p5, 14.86-91p3, 15.93p1, 17.86p1, 18.85-87p3 & 19.93p1), Glyn Marsh Obs. (April 4.88p1, 4.96p1 & 6.92-93p2), Blanes Obs. (April 4.89-90p4 & 14.88-89p2), MPC code G22 (April 4.92-15p14 & 5.95-97p5), Wishing Star Obs. (April 5.01p1), Ligustri/iTelObs-Mayhill (April 5.27p2), Deokheung Obs. (April 5.48-58p9 & 13.53-58p9), Koksijde Obs. (April 5.88p1), Great Shefford Obs. (April 6.98-99p3, 9.86-89p2, 10.88-92p2, 11.85-87p2, 13.87-88p2, 14.90-92p2 & 20.86-88p2), Nastro Verde Obs. (April 9.79-80p2), Dave Balam via Plaskett 1.8m Telescope (April 10.18-19p5 & 11.19-20p5), Golden Hill Obs. (April 10.89p1, 13.87p1, 14.88p1, 15.86p1, 15.91p1 & 16.86p1), Xingming Obs. #3 (April 11.71-75p5 & 12.79-83p3), Plaskett 1.8m (April 13.19-20p5), Corner Obs. (April 13.89p1, 14.90-91p2 & 15.87p1), Costa Teguise Obs. (April 13.90-91p3), Corona Borealis Obs. (April 14.63-67p4), Brignoles Obs. (April 14.81-85p3, 15.82p1 & 18.82-84p2), PASTIS Obs. (April 14.82-83p3), St. Saturnin les Avignon Obs. (April 14.89-90p3), Sormano Obs. (April 15.83p2), Baldone Obs. (April 16.82-83p7, 18.82-84p3, 19.83-85p7 & 20.83-85p9), Faulkes North (April 17.24p1 & 18.23p1), and Linhaceira Obs. (April 17.90p1)
CK19Y040 C/2019 Y4 (ATLAS) (i=45.4°, q=0.253 AU, Q=239.704 AU, TP=2020 May 31.02622 TT)

MPEC 2020-J15 - "22:11 UT" - 2020 HD10

K20H10D 2020 HD10 (small asteroid, Earth MOID=3.2 LD, H=27.2 ~12m) was picked up at 0615 UT on 29 April by the Mt. Lemmon Survey (MLS), observing it at April 29.26-28p4. This detection was confirmed by the Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) (April 29.32p4 & 29.40-41p4), Visnjan Obs. (April 30.01-02p4), Steward Obs. Mt. Lemmon Station (April 30.25-26p4 & May 1.18-19p4), Great Shefford Obs. (April 30.94-95p4), Astronomical Research Obs. Westfield (May 1.18-19p4), and Sandlot Obs. (May 1.19p3).

MPEC 2020-J14 - "20:36 UT" - 2016 XG18

K16X18G 2016 XG18 (H=19.5 ~426m) from UH/Tholen NEO Follow-Up 2.24m Telescope (2019 Nov. 27.55p1 at G=23.52 & 2019 Nov. 28.58p2 at G=22.67-81)

MPEC 2020-J13 - "17:33 UT" - 2020 HC10

K20H10C 2020 HC10 (small asteroid, H=22.2 ~123m) was picked up at 1049 UT on 29 April by PS1, observing it at April 29.45-47p3, 30.45-46p6, and May 1.48p3. This detection was confirmed by Steward Mt. Lemmon Sta. (April 30.32-33p3) and Sandlot Obs. (May 1.32-34p3).

MPEC 2020-J12 - "17:31 UT" - 2020 HB10

K20H10B 2020 HB10 (Q=4.513 AU, H=20.6 ~257m) was picked up at 0757 UT on 28 April by the Catalina Sky Survey (CSS), observing it at April 28.33-34p3. This detection was confirmed by Steward Mt. Lemmon Sta. (April 28.41p4, 29.17p4, 29.33p3 & 30.15p3), St. Pardon de Conques Obs. (April 28.90-91p3), Paus Obs. (April 28.94p2), Pascoli Obs. (April 29.84-85p3), GiaGa Obs. (April 29.84-86p2), Visnjan Obs. (April 30.01p5), Tebbutt Obs. (April 30.14-17p3), Schiaparelli Obs. (May 1.04-05p3), MLS (May 1.14p3), ARO Westfield (May 1.16-17p3), and Sandlot Obs. (May 1.20-23p4).

MPEC 2020-J11 - "16:38 UT" - 2020 HA10

K20H10A 2020 HA10 (i=49.7°, Q=0.949 AU, H=19.1 ~513m) was picked up at 1104 UT on 28 April by MLS, observing it at April 28.46-49p7 at G=19.8-20.4, 29.46-48p4 at G=21.6-22.1, 30.45-46p3 at G=20.1-6, and May 1.45-47p3 at G=20.5-21.3. This detection was confirmed by Steward Mt. Lemmon Sta. (April 30.45-46p3).

MPEC 2020-J10 - "16:35 UT" - 2020 HZ9

K20H09Z 2020 HZ9 (i=40.2°, H=18.6 ~645m) was picked up at 1125 UT on 28 April by MLS, observing it at April 28.48-49p4, 29.47p4, 30.46-47p12, and May 1.48p3. This detection was confirmed by Steward Mt. Lemmon Sta. (April 30.47p4 & May 1.47p3).

MPEC 2020-J09 - "14:47 UT" - 2020 HY9

K20H09Y 2020 HY9 (small asteroid, H=24.3 ~47m) was picked up at 0707 UT on 28 April by MLS, observing it at April 28.30-31p4. This detection was confirmed by CSS-Kuiper (April 28.38-39p4 at G=21.2-9, 29.19-21p4 at G=21.8-22.1 & 30.21-23p3 at G=21.9-22.6) and ARO Westfield (May 1.21-22p3 at V=22.2-3).

MPEC 2020-J08 - "14:45 UT" - 2020 HX9

K20H09X 2020 HX9 (small asteroid, H=23.2 ~78m) was picked up at 1334 UT on 28 April by PS1, observing it at April 28.57-59p3 and 30.45-46p2. This detection was confirmed by Steward Mt. Lemmon Sta. (April 29.35-36p3, 30.32p3 & May 1.43p3) and Mt. John Obs. (April 29.61-62p4).

<< DOU on 1 May '20 >> MPEC 2020-J07 - "12:02 UT" - Daily Orbit Update

Observations of risk-listed objects
K20H08Y 2020 HY8 (small asteroid, Q=4.480 AU, arc=3 days, H=22.6 ~102m) from PS1 (April 30.48-52p4)
K20H07M 2020 HM7 (small asteroid, arc=5 days, H=25.9 ~22m, close passer, NHATS target) from ATLAS Haleakala (April 30.40-42p4)
K20H06L 2020 HL6 (small asteroid, arc=12 days, H=28.0 ~9m, close passer, NHATS target) from Steward Mt. Lemmon Sta. (May 1.41p3)
K20H03K 2020 HK3 (small asteroid, arc=11 days, H=24.2 ~49m, close passer) from Northolt Branch Obs. (April 30.90-92p3)
K20G02Y 2020 GY2 (small asteroid, arc=16 days, H=23.6 ~65m) from Steward Mt. Lemmon Sta. (May 1.44p2)
K18J00N 2018 JN (close passer) from Tholen 2.24m (2018 June 21.45p1 at G=23.90)
Observations of close-passing objects
K20H07S 2020 HS7 from program code 2 via Kitab Obs. (April 28.70p4 & 28.75-77p5)
K20H07R 2020 HR7 (arc=5 days, H=25.4 ~28m) from Steward Mt. Lemmon Sta. (May 1.40p3)
K20H06B 2020 HB6 (arc=6 days, H=24.2 ~49m, NHATS target) from Tony Evans via Slooh.com Canary Islands Obs. (April 30.04-07p3), CSS (April 30.33-34p3), and ATLAS Haleakala (April 30.43-45p4)
K20H05N 2020 HN5 (arc=7 days, H=25.1 ~32m) from ATLAS Mauna Loa (April 30.36-39p4)
K20H04F 2020 HF4 (arc=12 days, H=27.4 ~11m, NHATS target) from PS1 (April 30.47-51p3)
K20H03T 2020 HT3 (arc=10 days, H=25.3 ~29m, NHATS target) from Steward Mt. Lemmon Sta. (May 1.39p3)
K20H02U 2020 HU2 (arc=13 days, H=26.6 ~16m, NHATS target) from ATLAS Mauna Loa (April 30.47-52p4)
K16H06P 2016 HP6 (arc=3 opp, H=25.4 ~28m, NHATS target) from ATLAS Mauna Loa (April 30.39-41p4)
c8945 388945 2008 TZ3 from CSS (April 30.30-32p4), ATLAS Mauna Loa (April 30.39-42p4), and program code 1 via Kuban State Univ. Obs. (April 30.76-83p15)
Observation campaigns (NHATS targets, radar support)
K20H07Q 2020 HQ7 (arc=5 days, H=26.1 ~20m, NHATS) from Steward Mt. Lemmon Sta. (May 1.45p3)
K20H05G 2020 HG5 (arc=9 days, H=25.7 ~25m, NHATS) from Steward Mt. Lemmon Sta. (May 1.46-47p3)
K20H03Q 2020 HQ3 (arc=11 days, H=25.4 ~28m, NHATS) from PS1 (April 30.44-46p4)
K20F03D 2020 FD3 (arc=41 days, H=23.4 ~71m, NHATS) from Steward Mt. Lemmon Sta. (May 1.44p3)
K11W00C 2011 WC (arc=3 opp, H=22.8 ~93m, NHATS) from MLS (April 30.20-22p4)
J0166 190166 2005 UP156 (radar) from CSS (April 30.24-25p4) and ATLAS Haleakala (April 30.34-36p3)
-- NHATS target table -- Planetary radar schedules: Arecibo & Goldstone
Observations of small asteroids (H>22.0)
K20H09B 2020 HB9 (arc=2 days, H=24.4 ~45m) from Sandlot Obs. (April 30.27-30p4)
K20H07P 2020 HP7 (arc=5 days, H=24.1 ~51m) from Steward Mt. Lemmon Sta. (May 1.48p3)
K20H07L 2020 HL7 (arc=5 days, H=22.9 ~89m) from ATLAS Mauna Loa (April 30.32-36p4)
K20H05X 2020 HX5 (arc=9 days, H=22.5 ~107m) from MLS (April 30.27-29p4)
K20H03Y 2020 HY3 (arc=13 days, H=23.1 ~81m) from MLS (April 30.27-28p3)
K20H03L 2020 HL3 (arc=10 days, H=24.0 ~54m) from MLS (April 30.15-17p3)
K20H03E 2020 HE3 (arc=10 days, H=22.9 ~89m) from ARO Westfield (April 20.17-19p3)
K10J03J 2010 JJ3 (arc=2 opp, H=23.7 ~62m) from MLS (April 30.32-34p4) and ATLAS Haleakala (April 30.41-45p5)
K02X40Q 2002 XQ40 (arc=5 opp, H=22.3 ~117m) from ATLAS Haleakala (April 30.41-45p4)
K00H40O 2000 HO40 (q=0.360 AU, arc=3 opp, H=22.2 ~123m) from MLS (April 30.30-31p4)
Observations of other objects
K20H08S 2020 HS8 (arc=4 days, H=21.1 ~204m) from PS1 (April 30.53-57p4)
K20H05S 2020 HS5 (arc=11 days, H=19.8 ~371m) from ARO Westfield (April 20.09-10p3 at V=21.9-22.1)
K20H01F 2020 HF1 (arc=14 days, H=19.1 ~513m) from ATLAS Haleakala (April 30.38-45p5)
K20G03N 2020 GN3 (arc=40 days, H=19.1 ~513m) from MLS (April 30.32-34p4)
K20G03F 2020 GF3 (arc=27 days, H=19.8 ~371m) from CSS (April 30.33-35p4) and ATLAS Mauna Loa (April 30.40-43p4)
K20G02D 2020 GD2 (arc=180 days, H=20.5 ~269m) from MLS (April 30.20-22p4) and ATLAS Haleakala (April 30.39-46p6)
K20F06B 2020 FB6 (arc=37 days, H=20.7 ~245m) from ATLAS Mauna Loa (April 30.49-51p4) and Evans/Slooh.com CIO (May 1.05-08p3)
K20B12X 2020 BX12 (i=40.1°, arc=6 opp, H=20.8 ~234m) from SATINO-1 (Feb. 3.78-79p3)
K19X01G 2019 XG1 (Q=4.163 AU, arc=2 opp, H=19.2 ~490m) from CSS (April 30.28-30p4) and ATLAS Mauna Loa (April 30.38-40p4)
K19W06B 2019 WB6 (arc=158 days, H=20.6 ~257m) from Steward Mt. Lemmon Sta. (May 1.19-20p2)
K19L06F 2019 LF6 (IEO, q=0.317 AU, Q=0.794 AU, arc=2 opp, H=17.3 ~1.17 km) from the Zwicky Transient Facility (ZTF) (April 28.48-49p4)
K18G04X 2018 GX4 (arc=3 opp, H=19.2 ~490m) from CSS (April 30.35-36p3)
K16GM0T 2016 GT220 (arc=6 opp, H=17.8 ~933m) from MLS (April 30.15-17p4)
K15TE3X 2015 TX143 (arc=6 opp, H=19.8 ~371m) from PJMSO (May 1.11-12p6)
K15H10B 2015 HB10 (arc=4 opp, H=18.2 ~776m) from MLS (April 30.33-34p3)
K14J54S 2014 JS54 (q=0.220 AU, arc=3 opp, H=21.2 ~195m) from PS1 (April 30.47-49p2)
K14H04O 2014 HO4 (arc=4 opp, H=19.2 ~490m) from PS1 (April 30.40-44p4)
K10J33K 2010 JK33 (arc=3 opp, H=21.1 ~204m) from PS1 (April 30.47-50p2)
K10F06C 2010 FC6 (arc=5 opp, H=20.2 ~309m) from MLS (April 30.42-44p4) and PS1 (April 30.58-61p3)
K10ED5C 2010 EC135 (arc=3 opp, H=20.2 ~309m) from CSS (April 30.35-36p4), ATLAS Haleakala (April 30.41-44p4), and ATLAS Mauna Loa (April 30.42-47p4)
K01G02S 2001 GS2 (arc=3 opp, H=20.6 ~257m) from ATLAS Haleakala (April 30.37-39p4)
K00CA1R 2000 CR101 (arc=4 opp, H=20.1 ~323m) from PS1 (April 30.48-51p4)
r9940 539940 2017 HW1 from Al Sadeem Obs. (April 25.78-79p4 & 29.76-78p4), CSS (April 30.32-33p3), ATLAS Mauna Loa (April 30.40-43p4), and Northolt Branch Obs. (April 30.88-89p4)
q2684 522684 2016 JP from ATLAS Mauna Loa (April 30.48-49p3)
p5446 515446 2013 UG5 from MLS (April 30.33-34p4)
o0094 500094 2012 BC20 from PS1 (May 1.26-29p4)
n4706 494706 2005 GL9 from PS1 (April 30.48-52p4)
h6324 436324 2010 GZ6 from Pan-STARRS 2 (PS2) (May 1.26-29p4)
h3992 433992 2000 HD74 from PS1 (April 30.53-57p4)
g5450 425450 2010 EV45 from ATLAS Mauna Loa (April 30.33-37p4)
d4783 394783 2008 HD3 from MLS (April 30.30-31p4)
c8838 388838 2008 EZ5 from CSS (April 30.15-17p4), ATLAS Haleakala (April 30.29-31p4), and PJMSO (May 1.10p6)
b4188 374188 2005 AD3 from CSS (April 30.13-15p4)
Y9063 349063 2006 XA from ATLAS Haleakala (April 30.56-62p8)
X3555 333555 2005 VY17 from PS1 (April 30.39-43p4)
W9275 329275 1999 VP6 from MLS (April 30.13-15p3)
V8050 318050 2004 FC32 from ZTF (April 29.30-33p3 & 29.37p2) and ATLAS Mauna Loa (April 30.39-41p4)
R6274 276274 2002 SS41 from ZTF (April 29.25-28p4) and ATLAS Mauna Loa (April 30.37-41p4)
R5976 275976 2001 XV10 from MLS (April 30.33-34p4)
N7551 237551 2000 WQ19 from ATLAS Mauna Loa (April 30.33-37p4)
I6822 186822 2004 FE31 from ATLAS Haleakala (April 30.42-45p4)
I4990 184990 2006 KE89 from CSS (April 30.42-44p3), PS2 (April 30.50-55p5), and ATLAS Mauna Loa (April 30.55-57p4)
H5189 175189 2005 EC224 from ATLAS Haleakala (April 30.40-43p4)
G9675 169675 2002 JM97 from ATLAS Haleakala (April 30.52-53p4)
G3243 163243 2002 FB3 from PJMSO (May 1.08p4)
F9857 159857 2004 LJ1 from MLS (April 30.18-19p4)
E5656 145656 4788 P-L from CSS (April 30.46-47p4)
E2555 142555 2002 TB58 from CSS (April 30.26-27p4) and ATLAS Haleakala (April 30.35-37p4)
E1053 141053 2001 XT1 from MLS (April 30.27-29p4)
D8847 138847 2000 VE62 from PJMSO (May 1.09-10p6)
D7064 137064 1998 WP5 from CSS (April 30.30-32p4) and ATLAS Haleakala (April 30.40-44p4)
D6923 136923 1998 JH2 from CSS (April 30.35-36p4) and ATLAS Haleakala (April 30.41-44p4)
D6618 136618 1994 CN2 from CSS (April 30.26-28p4)
B5052 115052 2003 RD6 from ATLAS Mauna Loa (April 30.32-36p4)
99935 99935 2002 AV4 from MLS (April 30.20-22p4) and ATLAS Haleakala (April 30.39-45p5)
86667 86667 2000 FO10 from CSS (April 30.35-36p4) and ATLAS Haleakala (April 30.40-42p4)
85628 85628 1998 KV2 from CSS (April 30.35-36p4) and ATLAS Haleakala (April 30.40-42p4)
68350 68350 2001 MK3 from ATLAS Mauna Loa (April 30.48-51p4)
68278 68278 2001 FC7 from CSS (April 30.33-34p4) and ATLAS Haleakala (April 30.43-44p4)
66251 66251 1999 GJ2 from CSS (April 30.35-36p4) and ATLAS Haleakala (April 30.40-41p4)
54401 54401 2000 LM from ATLAS Haleakala (April 30.39-44p4)
52768 52768 1998 OR2 from Al Sadeem Obs. (April 24.71-73p4, 25.74-76p4 & 29.72-73p4), Montseny Obs. (April 25.85-86p8), and Hirao Obs. (April 27.52p3)
36183 36183 1999 TX16 from ATLAS Haleakala (April 30.47-49p4)
35107 35107 1991 VH from ATLAS Mauna Loa (April 30.31-35p3) and PJMSO (May 1.10-11p6)
30825 30825 1990 TG1 from ATLAS Mauna Loa (April 30.24-25p3)
20826 20826 2000 UV13 from SONEAR (April 30.30p1 & May 1.29-31p3)
19764 19764 2000 NF5 from ATLAS Haleakala (April 30.55-57p4)
18172 18172 2000 QL7 from ATLAS Mauna Loa (April 30.28-30p4)
11405 11405 1999 CV3 from ATLAS Mauna Loa (April 30.25-27p4)
11066 11066 Sigurd (1992 CC1) from ATLAS Haleakala (April 30.29-31p4)
09950 9950 ESA (1990 VB) from MLS (April 30.24-27p3)
08566 8566 1996 EN from ATLAS Mauna Loa (April 30.30-34p4)
08014 8014 1990 MF from ATLAS Haleakala (April 30.48-51p4)
07753 7753 1988 XB from CSS (April 30.33-34p4)
07088 7088 Ishtar (1992 AA) from ATLAS Mauna Loa (April 30.35-38p4)
06050 6050 Miwablock (1992 AE) from ATLAS Haleakala (April 30.55-61p4)
06047 6047 1991 TB1 from ATLAS Mauna Loa (April 30.28-30p4)
04954 4954 Eric (1990 SQ) from MLS (April 30.24-27p4) and ATLAS Haleakala (April 30.39-45p5)
01864 1864 Daedalus (1971 FA) from ATLAS Mauna Loa (April 30.27-30p4)
01685 1685 Toro (1948 OA) from ATLAS Haleakala (April 30.60-63p4)

MPEC 2020-J06 - "11:38 UT" - 2020 HW9

K20H09W 2020 HW9 (q=0.325 AU, H=19.2 ~490m) was picked up at 0818 UT on 28 April by CSS, observing it at April 28.35-36p4. This detection was confirmed by Steward Mt. Lemmon Sta. (April 28.44p3, 29.20-21p3 & 30.17p4), Lothar Kurtze via Faulkes Telescope North (April 28.54p3), Pascoli Obs. (April 29.86-87p3), GiaGa Obs. (April 29.89-92p3), Visnjan Obs. (April 30.06-07p4), Tebbutt Obs. (April 30.27-28p3), Schiaparelli Obs. (May 1.06-07p3), MLS (May 1.14p3), ARO Westfield (May 1.17-18p3), and Sandlot Obs. (May 1.24-25p3).

MPEC 2020-J05 - "08:05 UT" - 2020 HV9

K20H09V 2020 HV9 (small asteroid, H=22.4 ~112m) was picked up at 0842 UT on 29 April by MLS, observing it at April 29.36-38p4. This detection was confirmed by PS2 (April 25.51-54p3 & 26.59-62p4), CSS-Kuiper (April 29.45p4), Steward Mt. Lemmon Sta. (April 30.27-28p3), ARO Westfield (May 1.19-20p3), and Sandlot Obs. (May 1.27-30p3).

MPEC 2020-J04 - "08:04 UT" - 2020 HU9

K20H09U 2020 HU9 (small asteroid, H=24.8 ~37m) was picked up at 0649 UT on 29 April by MLS, observing it at April 29.28-30p3 and May 1.18-19p4. This detection was confirmed by PS1 (April 25.50-54p3), Steward Mt. Lemmon Sta. (April 29.34p4, 29.40p4, 30.14-15p4 & May 1.18p3), ARO Westfield (May 1.15-16p3), and Sandlot Obs. (May 1.16-17p3).

MPEC 2020-J03 - "08:03 UT" - 2020 HT9

K20H09T 2020 HT9 (borderline-small, H=21.9 ~141m) was picked up at 1206 UT on 28 April by PS1, observing it at April 28.50-54p4 at w=21.71-22.08, 29.47p1 at G=21.5, and 30.44-46p4 at G=21.7-22.3. This detection was confirmed by PS2 (April 23.39-41p3), CSS-Kuiper (April 29.21-22p4 at G=21.2-22.1 & 30.24p3 at G=21.4-7), and ARO Westfield (May 1.28-29p3 at V=21.6-22.3).

MPEC 2020-J02 - "08:03 UT" - 2020 HS9

K20H09S 2020 HS9 (Q=4.409 AU, Earth MOID=1.2 LD, H=25.3 ~29m) was picked up at 0309 UT on 30 April by MLS, observing it at April 30.13-15p4 and May 1.18p4. This detection was confirmed by PS2 (April 20.44-45p2), Steward Mt. Lemmon Sta. (April 30.18-22p7 & 30.34p3), Sandlot Obs. (April 30.23-25p3 & May 1.12-14p4), and Mt. John Obs. (April 30.39-40p5).

MPEC 2020-J01 - "08:01 UT" - 2020 HR9

K20H09R 2020 HR9 (small asteroid, Q=4.199 AU, H=24.5 ~43m) was picked up at 0608 UT on 28 April by MLS, observing it at April 28.26-27p4. This detection was confirmed by PS1 (March 22.30-34p4 at G=21.9-22.1), Steward Mt. Lemmon Sta. (April 28.38-39p4 at G=21.4-22.4), CSS-Kuiper (April 29.14-15p4 & 30.16-17p3), and ARO Westfield (May 1.13-14p3).

Observers on 1 May '20

A total of 112 observers appeared in this day's MPECs.

Code	Observer / observatory
`L27`	29PREMOTE Obs., 4 in MPEC 2020-J16 -- C/2019 Y4-D, C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
`349`	Ageo Obs. in Japan, 2 in MPEC 2020-J16 -- C/2019 Y4-B, C/2019 Y4-A
`M43`	Al Sadeem Obs. in Abu Dhabi, 5 in MPECs 2020-J07 & 2020-J16 -- C/2019 Y4-E, C/2019 Y4-C, C/2019 Y4-B, 539940, 52768
`C97`	Al-Fulaij Obs., 2 in MPEC 2020-J16 -- C/2019 Y4-E, C/2019 Y4-A
`251`	Arecibo in Puerto Rico, 1 in radar -- 2020 HN5
`H21`	Astronomical Research Obs. Westfield in Illinois, 10 in MPECs 2020-J01, 2020-J03, 2020-J04, 2020-J05, 2020-J06, 2020-J07, 2020-J09, 2020-J12 & 2020-J15 -- 2020 HY9, 2020 HW9, 2020 HV9, 2020 HU9, 2020 HT9, 2020 HS5, 2020 HR9, 2020 HE3, 2020 HD10, 2020 HB10
`T05`	ATLAS Haleakala in Hawaii, 30 in MPEC 2020-J07 -- 2020 HM7, 2020 HF1, 2020 HB6, 2020 GD2, 2010 JJ3, 2010 EC135, 2002 XQ40, 2001 GS2, 99935, 86667, 85628, 68278, 66251, 54401, 388838, 36183, 349063, 19764, 190166, 186822, 175189, 169675, 142555, 137064, 136923, 11066, 8014, 6050, 4954, 1685
`T08`	ATLAS Mauna Loa in Hawaii, 27 in MPECs 2020-J07 & 2020-J16 -- 2020 HU2, 2020 HN5, 2020 HL7, 2020 GF3, 2020 FB6, C/2019 Y4-E, 2019 XG1, 2016 HP6, 2010 EC135, 68350, 539940, 522684, 425450, 388945, 35107, 318050, 30825, 276274, 237551, 184990, 18172, 115052, 11405, 8566, 7088, 6047, 1864
`069`	Baldone Obs. in Latvia, 4 in MPEC 2020-J16 -- C/2019 Y4-E, C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
`C77`	Bernezzo Obs. in Italy, 2 in MPEC 2020-J16 -- C/2019 Y4-B, C/2019 Y4-A
`L54`	Berthelot Obs., 4 in MPEC 2020-J16 -- C/2019 Y4-E, C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
`C86`	Blanes Obs. in Spain, 3 in MPEC 2020-J16 -- C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
`G20`	Brignoles Obs., 3 in MPEC 2020-J16 -- C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
`B96`	Brixiis Obs. in Belgium, 4 in MPEC 2020-J16 -- C/2019 Y4-E, C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
`K47`	BSCR Obs., 1 in MPEC 2020-J16 -- C/2019 Y4-C
`215`	Buchloe Obs. in Germany, 2 in MPEC 2020-J16 -- C/2019 Y4-E, C/2019 Y4-C
`Z36`	Cancelada Obs., 1 in MPEC 2020-J16 -- C/2019 Y4-C
`Z46`	Cardiff Obs., 4 in MPEC 2020-J16 -- C/2019 Y4-D, C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
`B20`	Carmelita Obs. in Spain, 3 in MPEC 2020-J16 -- C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
`I72`	Carpe Noctem Obs. in Spain, 4 in MPEC 2020-J16 -- C/2019 Y4-D, C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
`703`	Catalina Sky Survey (CSS) in Arizona, 23 in MPECs 2020-J06, 2020-J07 & 2020-J12 -- 2020 HW9, 2020 HB6, 2020 HB10, 2020 GF3, 2019 XG1, 2018 GX4, 2010 EC135, 86667, 85628, 68278, 66251, 539940, 388945, 388838, 374188, 190166, 184990, 145656, 142555, 137064, 136923, 136618, 7753
`V06`	Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) in Arizona, 5 in MPECs 2020-J01, 2020-J03, 2020-J05, 2020-J09 & 2020-J15 -- 2020 HY9, 2020 HV9, 2020 HT9, 2020 HR9, 2020 HD10
`K51`	Celado Obs. in Italy, 4 in MPEC 2020-J16 -- C/2019 Y4-D, C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
`A77`	Chante-Perdrix Obs. in France, 3 in MPEC 2020-J16 -- C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
`970`	Chelmsford Obs. in England, 5 in MPEC 2020-J16 -- C/2019 Y4-E, C/2019 Y4-D, C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
`G10`	Clavier Obs., 1 in MPEC 2020-J16 -- C/2019 Y4-A
`Z99`	Clixby Obs. in England, 3 in MPEC 2020-J16 -- C/2019 Y4-D, C/2019 Y4-C, C/2019 Y4-B
`178`	Collonges Obs., 1 in MPEC 2020-J16 -- C/2019 Y4-B
`B50`	Corner Obs. in Germany, 2 in MPEC 2020-J16 -- C/2019 Y4-B, C/2019 Y4-A
`N55`	Corona Borealis Obs. in Tibet, 1 in MPEC 2020-J16 -- C/2019 Y4-A
`Z39`	Costa Teguise Obs. in the Canary Islands, 5 in MPEC 2020-J16 -- C/2019 Y4-E, C/2019 Y4-D, C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
`P66`	Deokheung Obs., 1 in MPEC 2020-J16 -- C/2019 Y4-A
`K87`	Dettelbach Vineyard Obs. in Germany, 3 in MPEC 2020-J16 -- C/2019 Y4-E, C/2019 Y4-C, C/2019 Y4-A
`Z40`	El Manzanillo Obs., 2 in MPEC 2020-J16 -- C/2019 Y4-B, C/2019 Y4-A
`F65`	Faulkes Telescope North in Hawaii, 3 in MPEC 2020-J16 -- C/2019 Y4-D, C/2019 Y4-C, C/2019 Y4-A
`F652`	Lothar Kurtze in Germany via Faulkes Telescope North in Hawaii, 1 in MPEC 2020-J06 -- 2020 HW9
`K56`	Foligno Obs. in Italy, 1 in MPEC 2020-J16 -- C/2019 Y4-A
`G26`	Fushan Obs. in China, 1 in MPEC 2020-J16 -- C/2019 Y4-E
`372`	Geisei Obs. in Japan, 2 in MPEC 2020-J16 -- C/2019 Y4-C, C/2019 Y4-B
`203`	GiaGa Obs. in Italy, 2 in MPECs 2020-J06 & 2020-J12 -- 2020 HW9, 2020 HB10
`Z30`	Glyn Marsh Obs., 4 in MPEC 2020-J16 -- C/2019 Y4-D, C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
`J77`	Golden Hill Obs. in England, 4 in MPEC 2020-J16 -- C/2019 Y4-D, C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
`K73`	Gravina Obs. in Italy, 4 in MPEC 2020-J16 -- C/2019 Y4-E, C/2019 Y4-D, C/2019 Y4-C, C/2019 Y4-B
`J95`	Great Shefford Obs. in England, 6 in MPECs 2020-J15 & 2020-J16 -- 2020 HD10, C/2019 Y4-E, C/2019 Y4-D, C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
`P87`	Hirao Obs., 3 in MPECs 2020-J07 & 2020-J16 -- C/2019 Y4-B, C/2019 Y4-A, 52768
`C43`	Hoyerswerda Obs. in Germany, 1 in MPEC 2020-J16 -- C/2019 Y4-B
`H06`	iTelescope Obs. Mayhill in New Mexico, 3 in MPEC 2020-J16 -- C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
`H06*`	Rolando Ligustri in Italy via iTelescope Obs. Mayhill in New Mexico, 3 in MPEC 2020-J16 -- C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
`H06>`	program code ">" (39) via iTelescope Obs. Mayhill in New Mexico, 3 in MPEC 2020-J16 -- C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
`G19`	Kant Obs., 1 in MPEC 2020-J16 -- C/2019 Y4-C
`K85`	Kelmis Obs., 1 in MPEC 2020-J16 -- C/2019 Y4-A
`585`	Kiev Comet Station in Ukraine, 1 in MPEC 2020-J16 -- C/2019 Y4-C
`1862`	program code 2 via Kitab Obs., 1 in MPEC 2020-J07 -- 2020 HS7
`246`	KLENOT in the Czech Republic, 3 in MPEC 2020-J16 -- C/2019 Y4-D, C/2019 Y4-C, C/2019 Y4-B
`L12`	Koksijde Obs., 4 in MPEC 2020-J16 -- C/2019 Y4-E, C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
`C401`	program code 1 via Kuban State Univ. Obs. in Russia, 1 in MPEC 2020-J07 -- 388945
`D95`	Kurihara Obs. in Japan, 3 in MPEC 2020-J16 -- C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
`938`	Linhaceira Obs. in Portugal, 4 in MPEC 2020-J16 -- C/2019 Y4-D, C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
`K38`	M57 Obs. in Italy, 1 in MPEC 2020-J16 -- C/2019 Y4-A
`C10`	Maisoncelles Obs. in France, 5 in MPEC 2020-J16 -- C/2019 Y4-E, C/2019 Y4-D, C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
`232`	Masquefa Obs. in Spain, 2 in MPEC 2020-J16 -- C/2019 Y4-E, C/2019 Y4-B
`152`	Moletai Obs. in Lithuania, 5 in MPEC 2020-J16 -- C/2019 Y4-E, C/2019 Y4-D, C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
`213`	Montcabre Obs. in Spain, 3 in MPEC 2020-J16 -- C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
`B06`	Montseny Obs. in Spain, 4 in MPECs 2020-J07 & 2020-J16 -- C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A, 52768
`39`	MPC code 39, 1 in MPEC 2020-J16 -- C/2019 Y4-C
`G22`	MPC code G22, 2 in MPEC 2020-J16 -- C/2019 Y4-B, C/2019 Y4-A
`474`	Mt. John Obs. in New Zealand, 2 in MPECs 2020-J02 & 2020-J08 -- 2020 HX9, 2020 HS9
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 30 in MPECs 2020-J01, 2020-J02, 2020-J04, 2020-J05, 2020-J06, 2020-J07, 2020-J09, 2020-J10, 2020-J11, 2020-J12 & 2020-J15 -- 2020 HZ9, 2020 HY9, 2020 HY3, 2020 HX5, 2020 HW9, 2020 HV9, 2020 HU9, 2020 HS9, 2020 HR9, 2020 HL3, 2020 HD10, 2020 HB10, 2020 HA10, 2020 GN3, 2020 GD2, 2016 GT220, 2015 HB10, 2011 WC, 2010 JJ3, 2010 FC6, 2000 HO40, 99935, 515446, 394783, 329275, 275976, 159857, 141053, 9950, 4954
`K74`	Muensterschwarzach Obs. in Germany, 1 in MPEC 2020-J16 -- C/2019 Y4-B
`C82`	Nastro Verde Obs. in Italy, 2 in MPEC 2020-J16 -- C/2019 Y4-B, C/2019 Y4-A
`C47`	Nonndorf Obs. in Austria, 1 in MPEC 2020-J16 -- C/2019 Y4-A
`J69`	North Obs. in England, 1 in MPEC 2020-J16 -- C/2019 Y4-A
`Z80`	Northolt Branch Obs. in England, 6 in MPECs 2020-J07 & 2020-J16 -- 2020 HK3, C/2019 Y4-D, C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A, 539940
`G34`	Oberfrauendorf Obs. in Germany, 2 in MPEC 2020-J16 -- C/2019 Y4-C, C/2019 Y4-B
`C23`	Olmen Obs. in Belgium, 4 in MPEC 2020-J16 -- C/2019 Y4-E, C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
`F51`	Pan-STARRS 1 (PS1) in Hawaii, 19 in MPECs 2020-J01, 2020-J03, 2020-J04, 2020-J07, 2020-J08, 2020-J13 & 2020-J16 -- 2020 HY8, 2020 HX9, 2020 HU9, 2020 HT9, 2020 HS8, 2020 HR9, 2020 HQ3, 2020 HF4, 2020 HC10, C/2019 Y4-A, 2014 JS54, 2014 HO4, 2010 JK33, 2010 FC6, 2000 CR101, 500094, 494706, 433992, 333555
`F52`	Pan-STARRS 2 (PS2) in Hawaii, 5 in MPECs 2020-J02, 2020-J03, 2020-J05 & 2020-J07 -- 2020 HV9, 2020 HT9, 2020 HS9, 436324, 184990
`K63`	Pascoli Obs. in Italy, 2 in MPECs 2020-J06 & 2020-J12 -- 2020 HW9, 2020 HB10
`K19`	PASTIS Obs. in France, 1 in MPEC 2020-J16 -- C/2019 Y4-A
`B49`	Paus Obs. in Spain, 1 in MPEC 2020-J12 -- 2020 HB10
`H45`	Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 9 in MPECs 2020-J07 & 2020-J16 -- C/2019 Y4-E, C/2019 Y4-D, C/2019 Y4-C, C/2019 Y4-A, 2015 TX143, 388838, 35107, 163243, 138847
`658`	Plaskett 1.8m Telescope in British Columbia, 3 in MPEC 2020-J16 -- C/2019 Y4-D, C/2019 Y4-B, C/2019 Y4-A
`6581`	Dave Balam via Plaskett 1.8m Telescope in British Columbia, 1 in MPEC 2020-J16 -- C/2019 Y4-A
`L04`	ROASTERR-1 in Romania, 1 in MPEC 2020-J16 -- C/2019 Y4-B
`L40`	Saarbruecken Rastpfuhl Obs., 2 in MPEC 2020-J16 -- C/2019 Y4-C, C/2019 Y4-B
`233`	San Vito Obs. in Italy, 5 in MPEC 2020-J16 -- C/2019 Y4-E, C/2019 Y4-D, C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
`H36`	Sandlot Obs. in Kansas, 8 in MPECs 2020-J02, 2020-J04, 2020-J05, 2020-J06, 2020-J07, 2020-J12, 2020-J13 & 2020-J15 -- 2020 HW9, 2020 HV9, 2020 HU9, 2020 HS9, 2020 HD10, 2020 HC10, 2020 HB9, 2020 HB10
`B70`	Sant Celoni Obs. in Spain, 3 in MPEC 2020-J16 -- C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
`B56`	Sant Pere Obs. in Spain, 4 in MPEC 2020-J16 -- C/2019 Y4-D, C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
`C95`	SATINO-1 in France, 1 in MPEC 2020-J07 -- 2020 BX12
`204`	Schiaparelli Obs. in Italy, 6 in MPECs 2020-J06, 2020-J12 & 2020-J16 -- 2020 HW9, 2020 HB10, C/2019 Y4-E, C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
`K24`	Schmelz Obs. in Germany, 2 in MPEC 2020-J16 -- C/2019 Y4-D, C/2019 Y4-B
`K14`	Sencelles Obs. in Spain, 5 in MPEC 2020-J16 -- C/2019 Y4-E, C/2019 Y4-D, C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
`G402`	program code 2 via Slooh.com Canary Islands Obs. in the Canary Islands, 5 in MPEC 2020-J16 -- C/2019 Y4-E, C/2019 Y4-D, C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
`G403`	Tony Evans in Portugal via Slooh.com Canary Islands Obs. in the Canary Islands, 2 in MPEC 2020-J07 -- 2020 HB6, 2020 FB6
`Y00`	SONEAR in Brazil, 1 in MPEC 2020-J07 -- 20826
`587`	Sormano Obs. in Italy, 2 in MPEC 2020-J16 -- C/2019 Y4-B, C/2019 Y4-A
`L39`	Spica Obs., 3 in MPEC 2020-J16 -- C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
`I93`	St. Pardon de Conques Obs. in France, 1 in MPEC 2020-J12 -- 2020 HB10
`K21`	St. Saturnin les Avignon Obs. in France, 3 in MPEC 2020-J16 -- C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
`C36`	Starry Wanderer Obs. in Belarus, 2 in MPEC 2020-J16 -- C/2019 Y4-D, C/2019 Y4-C
`I52`	Steward Obs. Mt. Lemmon Station in Arizona, 20 in MPECs 2020-J01, 2020-J02, 2020-J04, 2020-J05, 2020-J06, 2020-J07, 2020-J08, 2020-J10, 2020-J11, 2020-J12, 2020-J13 & 2020-J15 -- 2020 HZ9, 2020 HX9, 2020 HW9, 2020 HV9, 2020 HU9, 2020 HT3, 2020 HS9, 2020 HR9, 2020 HR7, 2020 HQ7, 2020 HP7, 2020 HL6, 2020 HG5, 2020 HD10, 2020 HC10, 2020 HB10, 2020 HA10, 2020 GY2, 2020 FD3, 2019 WB6
`Q23`	Sukagawa Obs., 2 in MPEC 2020-J16 -- C/2019 Y4-B, C/2019 Y4-A
`I81`	Tarbatness Obs. in Scotland, 4 in MPEC 2020-J16 -- C/2019 Y4-E, C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
`858`	Tebbutt Obs. in New Mexico, 2 in MPECs 2020-J06 & 2020-J12 -- 2020 HW9, 2020 HB10
`C35`	Terrassa Obs. in Spain, 3 in MPEC 2020-J16 -- C/2019 Y4-E, C/2019 Y4-C, C/2019 Y4-B
`W33`	Transit Dreams Obs., 2 in MPEC 2020-J16 -- C/2019 Y4-B, C/2019 Y4-A
`V261`	program code 1 via UAS-ISON Obs., 1 in MPEC 2020-J16 -- C/2019 Y4-C
`T12`	UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 2 in MPECs 2020-J07 & 2020-J14 -- 2018 JN, 2016 XG18
`Z55`	Uraniborg Obs., 1 in MPEC 2020-J16 -- C/2019 Y4-A
`L01`	Visnjan Obs. in Croatia, 3 in MPECs 2020-J06, 2020-J12 & 2020-J15 -- 2020 HW9, 2020 HD10, 2020 HB10
`G23`	Vulpecula Obs., 3 in MPEC 2020-J16 -- C/2019 Y4-D, C/2019 Y4-C, C/2019 Y4-B
`Z92`	West Park Obs. in England, 1 in MPEC 2020-J16 -- C/2019 Y4-B
`I15`	Wishing Star Obs. in Rhode Island, 2 in MPEC 2020-J16 -- C/2019 Y4-B, C/2019 Y4-A
`N88`	Xingming Obs. #3, 2 in MPEC 2020-J16 -- C/2019 Y4-B, C/2019 Y4-A
`Z57`	Zuben Obs., 2 in MPEC 2020-J16 -- C/2019 Y4-C, C/2019 Y4-A
`I41`	Zwicky Transient Facility (ZTF) in southern California, 3 in MPEC 2020-J07 -- 2019 LF6, 318050, 276274

For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring on 1 May '20

**Summary Risk Table for Risk Assessments Updated Today** (last checks: NEODyS at 2358 UTC)
See the CRT page for a list of all objects rated recently as risks and our ephemerides page for a list of risk-listed objects under current observation.
The time horizon for JPL and NEODyS listings is 100 years, and both post impact solutions beyond that for some special objects.
For the latest official risk assessments, and for explanations of the terminology, see the NASA/JPL Sentry and NEODyS CLOMON2 risk pages.
0000NNN000 Object	Risk Monitor	When Noted UTC	0000T0000 Year Range	VI #	000NN00 Prob Cum	T0000 PS Cum	T0000 PS Max	T S	Notes for Today's Latest Risk Assessments

2020 HY8	NEODyS	1900	2073	1	1.0e-08	-6.64	-6.64	0	NEODyS: "Based on 31 optical observations (of which 0 are rejected as outliers) from 2020-04-27.388 to 2020-04-30.516."
2020 HY8	JPL Sentry	1601	2056-2073	2	7.9121e-08	-5.72	-5.74	0	JPL: Computed at 06:29 today Pacific time based on 31 observations spanning 3.1279 days (2020-Apr-27.38722 to 2020-Apr-30.515145). Diameter approximately 0.095 km. from weighted mean H=22.76.

2020 HM7	NEODyS	1900	2088	1	1.87e-08	-8.31	-8.31	0	NEODyS: "Based on 52 optical observations (of which 0 are rejected as outliers) from 2020-04-25.559 to 2020-04-30.419."

2020 HL6	NEODyS	1900	2069-2115	10	5.2e-07	-8.02	-8.27	0	NEODyS: "Based on 31 optical observations (of which 1 are rejected as outliers) from 2020-04-19.446 to 2020-05-01.413."
2020 HL6	JPL Sentry	1601	2069-2115	3	7.568e-07	-7.89	-8.10	0	JPL: Computed at 06:34 today Pacific time based on 30 observations spanning 11.967 days (2020-Apr-19.44533 to 2020-May-01.41195). Diameter approximately 0.008 km. from weighted mean H=28.02.

2020 HK3	NEODyS	1900	2073	1	4.0e-09	-7.74	-7.74	0	NEODyS: "Based on 83 optical observations (of which 0 are rejected as outliers) from 2020-04-19.547 to 2020-04-30.921."

2020 GY2	NEODyS	1900	2093-2117	2	9.07e-08	-6.45	-6.45	0	NEODyS: "Based on 92 optical observations (of which 1 are rejected as outliers) from 2020-04-15.350 to 2020-05-01.440."
2020 GY2	JPL Sentry	1601	2093-2093	1	5.320e-07	-5.66	-5.66	0	JPL: Computed at 06:29 today Pacific time based on 92 observations spanning 16.090 days (2020-Apr-15.34915 to 2020-May-01.43888). Diameter approximately 0.064 km. from weighted mean H=23.63.

2018 JN	NEODyS	1900	2100-2118	6	1.11e-05	-5.37	-5.44	0	NEODyS: "Based on 147 optical observations (of which 1 are rejected as outliers) from 2018-05-05.424 to 2018-06-21.449."
2018 JN	JPL Sentry	1601	2100-2120	4	1.16215e-05	-5.39	-5.53	0	JPL: Computed at 06:31 today Pacific time based on 147 observations spanning 47.025 days (2018-May-05.42349 to 2018-Jun-21.448319). Diameter approximately 0.033 km. from weighted mean H=25.09.

2016 AZ193	JPL Sentry	1601	2020-2114	492	2.1894676e-06	-6.31	-7.22	0	JPL: Computed at 14:28 April 6th of 2017 Pacific time based on 9 observations spanning .15930 days (2016-Jan-03.25638 to 2016-Jan-03.41568). Diameter approximately 0.016 km. from weighted mean H=26.62.

Legend: VI# = VI count, Prob Cum = cumulative probability, PS Cum/Max = cumulative/maximum Palermo Scale, TS = Torino Scale (next 100 years)

An impact solution, also known as a "virtual impactor" (VI), is not a prediction but rather a possibility derived from a variant orbit calculation that cannot be eliminated yet based on the existing data. Elimination can come quickly with just a little further observation or may take weeks or months, sometimes years. Once superceded or eliminated, a former impact solution has zero relevance to an object's risk. See Jon Giorgini's "Understanding Risk Pages" to learn more.

Chronology on 1 May '20

Times are UTC for when items were noted or added by The Tracking News.

0351 5/2	Grabbed MPEC 2020-J16 - Comet C/2019 Y4 (ATLAS) - see above
2301	Grabbed MPEC 2020-J15 - 2020 HD10 - see above
2201	Noted Radar Astrometry database update - see above
2100	Grabbed MPEC 2020-J14 - 2016 XG18 - see above
1900	Noted that NEODyS has updated its 2018 JN risk assessment - see above Noted that NEODyS has updated its 2020 GY2 risk assessment - see above Noted that NEODyS has reposted 2020 HK3 as an impact risk - see above Noted that NEODyS has updated its 2020 HL6 risk assessment - see above Noted that NEODyS has updated its 2020 HM7 risk assessment - see above Noted that NEODyS has updated its 2020 HY8 risk assessment - see above
1735	Grabbed MPEC 2020-J12 - 2020 HB10 - see above Grabbed MPEC 2020-J13 - 2020 HC10 - see above
1700	Grabbed MPEC 2020-J10 - 2020 HZ9 - see above Grabbed MPEC 2020-J11 - 2020 HA10 - see above
1601	Noted that JPL Sentry has updated its 2016 AZ193 risk assessment - see above Noted that JPL Sentry has updated its 2018 JN risk assessment - see above Noted that JPL Sentry has updated its 2020 GY2 risk assessment - see above Noted that JPL Sentry has updated its 2020 HL6 risk assessment - see above Noted that JPL Sentry has updated its 2020 HY8 risk assessment - see above Grabbed MPEC 2020-J07 - Daily Orbit Update - see above
1600	Grabbed MPEC 2020-J01 - 2020 HR9 - see above Grabbed MPEC 2020-J02 - 2020 HS9 - see above Grabbed MPEC 2020-J03 - 2020 HT9 - see above Grabbed MPEC 2020-J04 - 2020 HU9 - see above Grabbed MPEC 2020-J05 - 2020 HV9 - see above Grabbed MPEC 2020-J06 - 2020 HW9 - see above Grabbed MPEC 2020-J08 - 2020 HX9 - see above Grabbed MPEC 2020-J09 - 2020 HY9 - see above

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