2020-04-05 Tracking News

Contents on 5 April '20

IAU Minor Planet Center
- NEOCP Activity -- 30 listings
- New MPECs -- 22 MPECs
Observers -- 49 observers
Impact Risk Monitoring -- eight objects
Chronology

Asteroid/Comet Connection (A/CC) Resources:

Consolidated Risk Tables - the CRT page
Of 1117 risk-listed objects, 101 have had news in the last 31 days. Updated at 2358 UTC on 5 April.
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.

NEOCP Activity on 5 April '20

The MPC's NEO Confirmation Page has 30 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 30 objects listed. Of these, fifteen were "one nighters." So far The Tracking News has counted a total of 53 listings on the NEOCP today.

To learn how observers use the NEOCP, see the Practical guide on how to observe NEOCP object at Suno Observatory by Birtwhistle et al.

New MPECs on 5 April '20

Minor Planet Electronic Circulars

As of last check at 2358 UTC, there have been 22 MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2020-G42 time-stamped "12:12 UT" - Daily Orbit Update - see below
MPEC 2020-G43 time-stamped "13:59 UT" - 2020 GB1 - see below
MPEC 2020-G44 time-stamped "14:09 UT" - 2020 GC1 - see below
MPEC 2020-G45 time-stamped "14:11 UT" - 2020 GD1 - see below
MPEC 2020-G46 time-stamped "14:13 UT" - 2020 GE1 - see below
MPEC 2020-G47 time-stamped "14:15 UT" - 2020 GF1 - see below
MPEC 2020-G48 time-stamped "14:16 UT" - 2020 GG1 - see below
MPEC 2020-G49 time-stamped "14:17 UT" - 2020 GH1 - see below
MPEC 2020-G50 time-stamped "14:20 UT" - 2020 GJ1 - see below
MPEC 2020-G51 time-stamped "14:22 UT" - 2020 GK1 - see below
MPEC 2020-G52 time-stamped "14:24 UT" - 2020 GL1 - see below
MPEC 2020-G53 time-stamped "14:26 UT" - 2020 GM1 - see below
MPEC 2020-G54 time-stamped "14:28 UT" - 2020 GN1 - see below
MPEC 2020-G55 time-stamped "14:32 UT" - 2020 GO1 - see below
MPEC 2020-G56 time-stamped "14:34 UT" - 2020 GP1 - see below
MPEC 2020-G57 time-stamped "14:36 UT" - 2020 GQ1 - see below
MPEC 2020-G58 time-stamped "14:38 UT" - 2020 GR1 - see below
MPEC 2020-G59 time-stamped "14:40 UT" - 2020 GS1 - see below
MPEC 2020-G60 time-stamped "14:43 UT" - 2020 GT1 - see below
MPEC 2020-G61 time-stamped "14:46 UT" - 2020 GU1 - see below
MPEC 2020-G62 time-stamped "14:49 UT" - 2020 GV1 - see below
MPEC 2020-G63 time-stamped "14:54 UT" - 2020 GW1

MPEC 2020-G63 - "14:54 UT" - 2020 GW1

K20G01W 2020 GW1 (Earth MOID=3.2 LD, H=26.0 ~21m) was picked up at 0327 UT on 2 April by the Mt. Lemmon Survey (MLS), observing it at April 2.14-16p3 and 3.17p3. This detection was confirmed by Steward Obs. Mt. Lemmon Station (April 2.27-28p4) and Great Shefford Obs. (April 3.86-91p3).

MPEC 2020-G62 - "14:49 UT" - 2020 GV1

K20G01V 2020 GV1 (Earth MOID=0.9 LD, H=27.9 ~9m) was picked up at 0805 UT on 3 April by MLS, observing it at April 3.34-35p3, 4.41p3, and 5.36p4. This detection was confirmed by Steward Mt. Lemmon Sta. (April 3.43p4).

MPEC 2020-G61 - "14:46 UT" - 2020 GU1

K20G01U 2020 GU1 (Earth MOID=5.8 LD, H=27.8 ~9m) was picked up at 0720 UT on 3 April by MLS, observing it at April 3.31-32p4. This detection was confirmed by Steward Mt. Lemmon Sta. (April 3.38-39p3, 4.31p3 & 5.23p2) and Visnjan Obs. (April 4.90p3).

MPEC 2020-G60 - "14:43 UT" - 2020 GT1

K20G01T 2020 GT1 (small asteroid, Q=4.018 AU, H=24.9 ~35m) was picked up at 0919 UT on 3 April by MLS, observing it at April 3.39-40p4 and 4.44-45p4. This detection was confirmed by Steward Mt. Lemmon Sta. (April 3.43-44p4 & 5.40-41p3).

MPEC 2020-G59 - "14:40 UT" - 2020 GS1

K20G01S 2020 GS1 (small asteroid, H=22.2 ~123m) was picked up at 0647 UT on 3 April by MLS, observing it at April 3.28-30p4. This detection was confirmed by Steward Mt. Lemmon Sta. (April 3.41-42p4, 4.30p4 & 5.30-31p3) and Jana Pittichova Chesley via Table Mtn. Obs. (April 4.37-38p2).

MPEC 2020-G58 - "14:38 UT" - 2020 GR1

K20G01R 2020 GR1 (small asteroid, H=23.6 ~65m) was picked up at 0718 UT on 3 April by MLS, observing it at April 3.30-32p4. This detection was confirmed by Steward Mt. Lemmon Sta. (April 3.42p4, 4.26-27p4 & 5.35p3) and Visnjan Obs. (April 4.92-93p3).

MPEC 2020-G57 - "14:36 UT" - 2020 GQ1

K20G01Q 2020 GQ1 (Earth MOID=1.9 LD, H=26.8 ~15m) was picked up at 0644 UT on 3 April by MLS, observing it at April 3.28-30p4 and 4.34p3. This detection was confirmed by Steward Mt. Lemmon Sta. (April 3.39-40p3 & 5.27p4), Visnjan Obs. (April 4.95-96p3), and Great Shefford Obs. (April 4.99-01p2).

MPEC 2020-G56 - "14:34 UT" - 2020 GP1

K20G01P 2020 GP1 (small asteroid, H=23.8 ~59m) was picked up at 1104 UT on 3 April by MLS, observing it at April 3.46-47p3. This detection was confirmed by Steward Mt. Lemmon Sta. (April 3.49-50p4, 4.41p3 & 5.38p3), Visnjan Obs. (April 4.11-12p5), and Schwarzschild Obs. (April 5.10-11p3).

MPEC 2020-G55 - "14:32 UT" - 2020 GO1

K20G01O 2020 GO1 (risk listed, Earth MOID=0.1 LD, H=27.6 ~10m, close passer) was picked up at 1116 UT on 2 April by the Catalina Sky Survey (CSS), observing it at April 2.47-51p6. This detection was confirmed by Pan-STARRS 1 (PS1) (April 3.55-57p3), St. Pardon de Conques Obs. (April 4.08-09p3), Schwarzschild Obs. (April 4.11-12p3 & 5.12-13p3), Steward Mt. Lemmon Sta. (April 4.46-48p3 & 5.43p2), and Visnjan Obs. (April 5.12-14p3).

MPEC 2020-G54 - "14:28 UT" - 2020 GN1

K20G01N 2020 GN1 (Earth MOID=2.6 LD, H=27.0 ~13m) was picked up at 1106 UT on 3 April by MLS, observing it at April 3.46-52p6 and 4.48p4. This detection was confirmed by Steward Mt. Lemmon Sta. (April 3.50p4 & 5.39p4), Schwarzschild Obs. (April 4.11p3 at V=19.9-20.3 & 5.12p2 at V=22.3-23.0), and Great Shefford Obs. (April 5.10-12p2).

MPEC 2020-G53 - "14:26 UT" - 2020 GM1

K20G01M 2020 GM1 (small asteroid, q=0.345 AU, H=23.6 ~65m) was picked up at 0951 UT on 3 April by MLS, observing it at April 3.41-43p4. This detection was confirmed by Steward Mt. Lemmon Sta. (April 3.48-49p4, 4.42p3 & 5.37p4), Schwarzschild Obs. (April 4.12-13p3 & 5.08p2), Visnjan Obs. (April 4.98p3), KLENOT (April 4.98-99p2), and Great Shefford Obs. (April 5.03-04p2).

MPEC 2020-G52 - "14:24 UT" - 2020 GL1

K20G01L 2020 GL1 (small asteroid, H=26.8 ~15m) was picked up at 0755 UT on 2 April by MLS, observing it at April 2.33-35p4 at G=20.4-21.3, 3.38p3 at G=20.6-21.1, 4.44p3 at G=20.5-21.1, and 5.35-36p3 at G=20.9-22.6. This detection was confirmed by Steward Mt. Lemmon Sta. (April 2.40-41p2).

MPEC 2020-G51 - "14:22 UT" - 2020 GK1

K20G01K 2020 GK1 (risk listed, Earth MOID=3.2 LD, H=25.1 ~32m, close passer) was picked up at 1028 UT on 3 April by MLS, observing it at April 3.44-45p3. This detection was confirmed by Steward Mt. Lemmon Sta. (April 3.49p4, 4.48-49p4 & 5.31-32p4), PS1 (April 3.50p2), Aorangi Iti Obs. (April 3.52p3), Visnjan Obs. (April 4.04-05p6), Schwarzschild Obs. (April 4.05p3), Schiaparelli Obs. (April 4.09-10p2), and St. Pardon de Conques Obs. (April 4.10-11p3).

MPEC 2020-G50 - "14:20 UT" - 2020 GJ1

K20G01J 2020 GJ1 (small asteroid, H=26.2 ~19m) was picked up at 0555 UT on 2 April by MLS, observing it at April 2.25-26p4 at G=21.6-22.4, 2.36p3 at G=21.9, 3.25p3 at G=21.4-6, 4.19p3 at G=20.5-21.5, and 5.21-22p4 at G=21.5-7.

MPEC 2020-G49 - "14:17 UT" - 2020 GH1

K20G01H 2020 GH1 (Earth MOID=8.4 LD, H=25.5 ~27m) was picked up at 1429 UT on 3 April by PS1, observing it at April 3.60-63p3. This detection was confirmed by Schiaparelli Obs. (April 3.98-99p3), Great Shefford Obs. (April 3.98-00p3 & 4.96-97p3), Schwarzschild Obs. (April 4.05p3, 4.89p3 & 5.03p3), St. Pardon de Conques Obs. (April 4.07p3), Visnjan Obs. (April 4.14-15p5), KLENOT (April 4.94p4), Paus Obs. (April 4.99p2), Clixby Obs. (April 5.04-05p3), and Steward Mt. Lemmon Sta. (April 5.43p4).

MPEC 2020-G48 - "14:16 UT" - 2020 GG1

K20G01G 2020 GG1 (small asteroid, H=25.2 ~31m) was picked up at 0649 UT on 3 April by MLS, observing it at April 3.28-30p4. This detection was confirmed by PS1 (March 25.47-49p3), Steward Mt. Lemmon Sta. (April 3.40-41p4 & 4.27-28p3), and Visnjan Obs. (April 4.86-87p3).

MPEC 2020-G47 - "14:15 UT" - 2020 GF1

K20G01F 2020 GF1 (Earth MOID=1.5 LD, H=26.2 ~19m) was picked up at 0810 UT on 3 April by CSS, observing it at April 3.34-36p3. This detection was confirmed by Steward Mt. Lemmon Sta. (April 3.44p4, 4.46-47p4 & 5.42p4), Schwarzschild Obs. (April 4.06-07p3 & 4.80-83p5), Mountainville Obs. (April 4.44p1 & 4.51p1), Rokycany Obs. (April 4.86p5), KLENOT (April 4.88-89p5), Clixby Obs. (April 4.89-90p3), St. Pardon de Conques Obs. (April 4.91-95p2), Paus Obs. (April 4.93p2), Great Shefford Obs. (April 4.93-94p3), Visnjan Obs. (April 4.99-00p3), Schiaparelli Obs. (April 5.04-05p2), and Dettelbach Vineyard Obs. (April 5.06-08p3).

MPEC 2020-G46 - "14:13 UT" - 2020 GE1

K20G01E 2020 GE1 (Earth MOID=3.3 LD, H=27.1 ~13m) was picked up at 0545 UT on 4 April by MLS, observing it at April 4.24-26p4 and 4.51p4. This detection was confirmed by Steward Mt. Lemmon Sta. (April 4.28p4, 4.39p4 & 5.18p3), Visnjan Obs. (April 4.81p6), Schiaparelli Obs. (April 4.83-84p3), Schwarzschild Obs. (April 4.83p3), Great Shefford Obs. (April 4.83-84p3), KLENOT (April 4.85p11), Clixby Obs. (April 4.86p3), Paus Obs. (April 4.89p2), GiaGa Obs. (April 4.92-96p3), and St. Pardon de Conques Obs. (April 5.09-10p3).

MPEC 2020-G45 - "14:11 UT" - 2020 GD1

K20G01D 2020 GD1 (small asteroid, Earth MOID=7.9 LD, H=23.0 ~85m) was picked up at 0916 UT on 4 April by MLS, observing it at April 4.39-40p4 and 4.51p4. This detection was confirmed by PS1 (April 2.49-53p4 & 3.48p2), Steward Mt. Lemmon Sta. (April 4.44p3 & 5.37-38p4), Schwarzschild Obs. (April 4.80-81p3 & 4.85p4), KLENOT (April 4.89p3), Great Shefford Obs. (April 4.92-93p3), Schiaparelli Obs. (April 4.96-97p2), Paus Obs. (April 4.96p2), St. Pardon de Conques Obs. (April 4.96-97p3), Visnjan Obs. (April 4.96-97p5), Clixby Obs. (April 4.97p3), and GiaGa Obs. (April 4.98-01p2).

MPEC 2020-G44 - "14:09 UT" - 2020 GC1

K20G01C 2020 GC1 (Earth MOID=0.1 LD, H=25.2 ~31m) was picked up at 1404 UT on 3 April by PS1, observing it at April 3.59-62p4. This detection was confirmed by ROASTERR-1 (April 3.86-92p8), Luscherz Obs. (April 3.87-88p3), Spica Obs. (April 3.89-90p5), Bernezzo Obs. (April 3.89-91p4), Paus Obs. (April 3.90-92p6), Great Shefford Obs. (April 3.92p4, 4.98-99p4 & 5.14p4), Northolt Branch Obs. (April 3.92-93p4 & 4.99-01p7), Pascoli Obs. (April 3.93-94p3), St. Pardon de Conques Obs. (April 3.95p3), Schiaparelli Obs. (April 3.96-97p5 & 5.01-03p4), GiaGa Obs. (April 3.98-99p3), M57 Obs. (April 3.98-99p7), Dax Obs. (April 3.99-01p4), program code "*" (19) via Slooh.com Canary Islands Obs. (April 4.09-10p3), Visnjan Obs. (April 4.10p10), Schwarzschild Obs. (April 4.14p3, 5.03p4 & 5.07p3), Wiggins Obs. (April 4.25-26p9), CSS (April 4.41p2), and KLENOT (April 4.95p2).

MPEC 2020-G43 - "13:59 UT" - 2020 GB1

K20G01B 2020 GB1 (risk listed, Earth MOID=0.1 LD, H=26.8 ~15m, close passer) was picked up at 0515 UT on 4 April by MLS, observing it at April 4.22-23p4 and 4.51p4. This detection was confirmed by Pan-STARRS 2 (PS2) (April 2.53-56p3), Steward Mt. Lemmon Sta. (April 4.35-36p3 & 5.19p4), Rokycany Obs. (April 4.79p5), Schwarzschild Obs. (April 4.79-83p6), Platanus Obs. (April 4.80p1, 4.93p1 & 5.08-13p4), ROASTERR-1 (April 4.81-82p3), KLENOT (April 4.85-86p8), Castelmartini Obs. (April 4.86p5), Schiaparelli Obs. (April 4.87-88p3), Clixby Obs. (April 4.87p3), Great Shefford Obs. (April 4.89-90p4), St. Pardon de Conques Obs. (April 4.89-90p3), Northolt Branch Obs. (April 4.89-91p3), Visnjan Obs. (April 4.91-92p7), Dettelbach Vineyard Obs. (April 4.97-01p3), and Dax Obs. (April 4.97-98p3).

<< DOU on 5 April '20 >> MPEC 2020-G42 - "12:12 UT" - Daily Orbit Update

Observations of risk-listed objects
K20G00E 2020 GE (small asteroid, arc=7 days, H=28.3 ~7m, close passer, NHATS target) from Schwarzschild Obs. (April 5.00p3) and Great Shefford Obs. (April 5.07-09p3)
K20F06V 2020 FV6 (small asteroid, Q=4.497 AU, arc=7 days, H=23.0 ~85m) from Schwarzschild Obs. (April 5.06p3)
K20F01A 2020 FA1 (small asteroid, arc=20 days, H=26.4 ~18m, NHATS target) from Steward Mt. Lemmon Sta. (April 5.16-17p4)
Observations of recently (no longer) risk-listed objects
K20F06M 2020 FM6 (almost small, arc=10 days, H=21.8 ~148m) from Schwarzschild Obs. (April 5.01-02p3)
K20F05O 2020 FO5 (q=0.357 AU, Q=6.190 AU, arc=12 days, H=20.6 ~257m) from Schwarzschild Obs. (April 4.84p3)
Observations of close-passing objects
K20G00M 2020 GM (arc=2 days, H=26.5 ~17m) from Schwarzschild Obs. (April 4.80p3) and Great Shefford Obs. (April 4.87-88p3 & 5.05-06p3)
K20G00C 2020 GC (arc=3 days, H=26.5 ~17m) from Schwarzschild Obs. (April 4.81p3) and Great Shefford Obs. (April 4.84-86p3)
c8945 388945 2008 TZ3 from CSS (April 4.28-29p3) and ATLAS Haleakala (April 4.44-47p4)
Observation campaigns (NHATS targets, radar support)
a3599 363599 2004 FG11 (radar) from ATLAS Haleakala (April 4.42-45p4) and Purple Mtn. Obs. Xuyi Station (April 4.72-74p3)
J0166 190166 2005 UP156 (radar) from CSS (April 4.17-19p4) and Mirasteilas Obs. (April 4.86-88p3)
-- NHATS target table -- Planetary radar schedules: Arecibo & Goldstone
Observations of small asteroids (H>22.0)
K20G00L 2020 GL (arc=3 days, H=23.2 ~78m) from Steward Mt. Lemmon Sta. (April 5.15p4)
K20F06Q 2020 FQ6 (arc=14 days, H=25.0 ~34m) from Schwarzschild Obs. (April 5.07p2)
K20F05F 2020 FF5 (arc=12 days, H=24.9 ~35m) from MLS (April 4.46-47p4) and Schwarzschild Obs. (April 5.09p3)
K20F04C 2020 FC4 (arc=11 days, H=23.3 ~74m) from Astronomical Research Obs. Westfield (April 2.24-26p3 at V=22.0-22.1)
K20F03K 2020 FK3 (arc=14 days, H=25.4 ~28m) from Schwarzschild Obs. (April 4.96p3 & 5.08-09p3) and Steward Mt. Lemmon Sta. (April 5.48-49p3)
K20F02V 2020 FV2 (arc=15 days, H=22.1 ~129m) from Steward Mt. Lemmon Sta. (April 5.15-16p4)
K20F01N 2020 FN1 (arc=19 days, H=22.8 ~93m) from MLS (April 4.46-47p4)
K20F01J 2020 FJ1 (arc=17 days, H=25.4 ~28m) from ARO Westfield (April 2.20-22p4 at V=21.8-22.1)
K20B03O 2020 BO3 (arc=33 days, H=23.4 ~71m) from UH/Tholen NEO Follow-Up 2.24m Telescope (Jan. 29.21-22p2)
K18K00P 2018 KP (arc=2 opp, H=22.1 ~129m) from ARO Westfield (April 2.07-08p3 at V=21.6-22.2)
Observations of other objects
K20F06Z 2020 FZ6 (Q=4.035 AU, arc=32 days, H=21.3 ~186m) from M. Kumrucu-Lohmiller via Slooh.com Chile Obs. (April 4.25-27p3)
K20F06B 2020 FB6 (arc=11 days, H=20.4 ~282m) from Steward Mt. Lemmon Sta. (April 5.43-45p4)
K20F05R 2020 FR5 (arc=11 days, H=21.0 ~214m) from Xuyi Sta. (April 4.82-84p3)
K20F04X 2020 FX4 (arc=154 days, H=21.7 ~155m) from PS1 (April 4.31-34p3)
K20F04W 2020 FW4 (arc=13 days, H=21.7 ~155m) from program code 1 via Kitab Obs. (April 3.83-84p6), Northolt Branch Obs. (April 3.90-91p3), Schwarzschild Obs. (April 4.06p3, 4.81p3 & 5.08p3), KLENOT (April 4.93p7), and Wishing Star Obs. (April 5.07-08p3)
K20D04M 2020 DM4 (arc=37 days, H=21.7 ~155m) from Castelmartini Obs. (April 2.96-97p3) and Northolt Branch Obs. (April 3.94p2)
K20D03T 2020 DT3 (arc=48 days, H=21.2 ~195m) from Steward Mt. Lemmon Sta. (April 5.12p4)
K19Y03V 2019 YV3 (arc=30 days, H=21.0 ~214m) from SATINO-1 (Jan. 1.83-85p2)
K19X01G 2019 XG1 (Q=4.163 AU, arc=2 opp, H=19.2 ~490m) from CSS (April 4.20-23p8)
K19W02R 2019 WR2 (arc=133 days, H=19.3 ~467m) from Steward Mt. Lemmon Sta. (April 5.44-47p4)
K19U09T 2019 UT9 (arc=170 days, H=18.6 ~645m) from PS1 (April 4.44-48p4)
K19S06H 2019 SH6 (arc=2 opp, H=20.0 ~339m) from the Zwicky Transient Facility (ZTF) (April 2.34p1, 2.40p1 & 2.45-46p2)
K17Y05T 2017 YT5 (i=36.5°, arc=4 opp, H=19.0 ~537m) from Northolt Branch Obs. (2019 Aug. 3.93p3)
K13A27O 2013 AO27 (q=0.292 AU, Q=4.531 AU, arc=2 opp, H=19.8 ~371m) from CSS (April 4.43-45p4) and Xuyi Sta. (April 4.82-84p3)
K10U07E 2010 UE7 (arc=4 opp, H=19.3 ~467m) from ARO Westfield (April 2.08-09p6)
K03A03A 2003 AA3 (arc=6 opp, H=20.2 ~309m) from MLS (April 4.22-24p4)
K01G02S 2001 GS2 (arc=3 opp, H=20.5 ~269m) from CSS (April 4.32-33p4) and Xuyi Sta. (April 4.72-74p3)
r9940 539940 2017 HW1 from ROASTERR-1 (April 4.84-85p3) and Mirasteilas Obs. (April 4.89-90p3)
q5364 525364 2005 CL7 from PS2 (March 9.25-27p3)
n4880 494880 2008 SQ7 from CSS (April 4.28-29p4)
m2244 482244 2011 HR from MLS (April 4.24-26p4) and PS1 (April 4.43-46p3)
k5892 465892 2010 UT7 from ARO Westfield (April 2.29-31p3 at V=21.8-22.3)
k3282 463282 2012 HR15 from MLS (April 4.20-21p4 & 4.27-28p4)
h6324 436324 2010 GZ6 from Tentlingen Obs. (April 4.09p1)
g5450 425450 2010 EV45 from CSS (April 4.20-23p8)
f3989 413989 2007 EL88 from Olmen Obs. (April 4.88-89p3)
c8838 388838 2008 EZ5 from Castelmartini Obs. (April 2.95-96p3)
b3428 373428 1999 TC5 from CSS (April 4.23-25p4), Xuyi Sta. (April 4.64-67p3), and ROASTERR-1 (April 4.87p2)
V8050 318050 2004 FC32 from CSS (April 4.29-31p4)
S5110 285110 1995 MA1 from ARO Westfield (April 2.33-35p3 at V=22.1-2)
R6732 276732 2004 EV9 from Castelmartini Obs. (April 2.93p3)
R6274 276274 2002 SS41 from CSS (April 4.25-27p3) and Xuyi Sta. (April 4.68-71p3)
R6049 276049 2002 CE26 from ARO Westfield (April 2.37-39p3 at V=22.0-22.1)
R4138 274138 2008 FU6 from PS1 (March 21.37-40p3)
N7551 237551 2000 WQ19 from MLS (April 4.20-21p4 & 4.27-28p4)
G2080 162080 1998 DG16 from PS1 (March 24.30-33p4)
F4993 154993 2005 EA94 from Castelmartini Obs. (April 2.98-99p3)
E4861 144861 2004 LA12 from MLS (April 4.46-47p4)
E4411 144411 2004 EW9 from Campo dos Amarais Obs. (April 4.17-20p3)
E1525 141525 2002 FV5 from MLS (April 4.17-18p4)
D9289 139289 2001 KR1 from MLS (April 4.38-40p4)
D8175 138175 2000 EE104 from PS1 (2019 Nov. 7.60-63p4)
D8127 138127 2000 EE14 from CSS (April 4.50p2)
D7170 137170 1999 HF1 from ATLAS Haleakala (April 4.58-60p4)
D7064 137064 1998 WP5 from CSS (April 4.34-36p4), ATLAS Haleakala (April 4.42-45p4), and Xuyi Sta. (April 4.72-74p3)
D6993 136993 1998 ST49 from PS2 (March 24.37-38p2)
D6618 136618 1994 CN2 from CSS (April 4.23-25p4) and Xuyi Sta. (April 4.64-66p2)
90367 90367 2003 LC5 from Wishing Star Obs. (April 5.06-07p3)
90075 90075 2002 VU94 from Castelmartini Obs. (April 4.88-89p3)
89830 89830 2002 CE from Dettelbach Vineyard Obs. (April 4.85-88p3)
86667 86667 2000 FO10 from MASTER-II Sutherland (March 28.95-96p2)
86067 86067 1999 RM28 from PS2 (March 7.62-64p3) and MLS (April 4.46-48p4)
85628 85628 1998 KV2 from CSS (April 4.39-40p3) and Xuyi Sta. (April 4.76-81p3)
68350 68350 2001 MK3 from CSS (April 4.47-49p7)
68278 68278 2001 FC7 from CSS (April 4.32-34p4)
65690 65690 1991 DG from ROASTERR-1 (April 4.86p3)
54686 54686 2001 DU8 from Castelmartini Obs. (April 2.99-00p3)
52768 52768 1998 OR2 from Kitab Obs./code 1 (April 3.85p4), Olmen Obs. (April 3.86-87p4 & 4.82-83p4), Xuyi Sta. (April 4.53-56p3), program code 1 via Kuban State Univ. Obs. (April 4.70-85p25), Saarbruecken Rastpfuhl Obs. (April 4.79-80p2), ROASTERR-1 (April 4.83p3), West Park Obs. (April 4.86-90p4), and Wishing Star Obs. (April 4.99p3)
40267 40267 1999 GJ4 from Tentlingen Obs. (April 3.86-89p4)
36284 36284 2000 DM8 from Castelmartini Obs. (April 4.83-84p3)
35107 35107 1991 VH from Castelmartini Obs. (April 2.93-94p3)
30825 30825 1990 TG1 from Castelmartini Obs. (April 4.81p2)
20826 20826 2000 UV13 from MASTER-II Sutherland (March 31.13-14p3)
09400 9400 1994 TW1 from Lumezzane Obs. (April 3.83-84p2) and Tentlingen Obs. (April 3.92-94p3)
07088 7088 Ishtar (1992 AA) from CSS (April 4.20-23p8)
06047 6047 1991 TB1 from Lumezzane Obs. (April 3.81-82p2)
01917 1917 Cuyo (1968 AA) from CSS (April 4.40-42p4) and Xuyi Sta. (April 4.82-84p3)

Observers on 5 April '20

A total of 49 observers appear in today's MPECs.

Code	Observer / observatory
`R57`	Aorangi Iti Obs. in New Zealand, 1 in MPEC 2020-G51 -- 2020 GK1
`H21`	Astronomical Research Obs. Westfield in Illinois, 7 in MPEC 2020-G42 -- 2020 FJ1, 2020 FC4, 2018 KP, 2010 UE7, 465892, 285110, 276049
`T05`	ATLAS Haleakala in Hawaii, 4 in MPEC 2020-G42 -- 388945, 363599, 137170, 137064
`C77`	Bernezzo Obs. in Italy, 1 in MPEC 2020-G44 -- 2020 GC1
`X74`	Campo dos Amarais Obs., 1 in MPEC 2020-G42 -- 144411
`160`	Castelmartini Obs. in Italy, 10 in MPECs 2020-G42 & 2020-G43 -- 2020 GB1, 2020 DM4, 90075, 54686, 388838, 36284, 35107, 30825, 276732, 154993
`703`	Catalina Sky Survey (CSS) in Arizona, 21 in MPECs 2020-G42, 2020-G44, 2020-G47 & 2020-G55 -- 2020 GO1, 2020 GF1, 2020 GC1, 2019 XG1, 2013 AO27, 2001 GS2, 85628, 68350, 68278, 494880, 425450, 388945, 373428, 318050, 276274, 190166, 138127, 137064, 136618, 7088, 1917
`Z99`	Clixby Obs. in England, 5 in MPECs 2020-G43, 2020-G45, 2020-G46, 2020-G47 & 2020-G49 -- 2020 GH1, 2020 GF1, 2020 GE1, 2020 GD1, 2020 GB1
`958`	Dax Obs. in France, 2 in MPECs 2020-G43 & 2020-G44 -- 2020 GC1, 2020 GB1
`K87`	Dettelbach Vineyard Obs. in Germany, 3 in MPECs 2020-G42, 2020-G43 & 2020-G47 -- 2020 GF1, 2020 GB1, 89830
`203`	GiaGa Obs. in Italy, 3 in MPECs 2020-G44, 2020-G45 & 2020-G46 -- 2020 GE1, 2020 GD1, 2020 GC1
`J95`	Great Shefford Obs. in England, 13 in MPECs 2020-G42, 2020-G43, 2020-G44, 2020-G45, 2020-G46, 2020-G47, 2020-G49, 2020-G53, 2020-G54, 2020-G57 & 2020-G63 -- 2020 GW1, 2020 GQ1, 2020 GN1, 2020 GM1, 2020 GM, 2020 GH1, 2020 GF1, 2020 GE1, 2020 GE, 2020 GD1, 2020 GC1, 2020 GC, 2020 GB1
`1861`	program code 1 via Kitab Obs., 2 in MPEC 2020-G42 -- 2020 FW4, 52768
`246`	KLENOT in the Czech Republic, 8 in MPECs 2020-G42, 2020-G43, 2020-G44, 2020-G45, 2020-G46, 2020-G47, 2020-G49 & 2020-G53 -- 2020 GM1, 2020 GH1, 2020 GF1, 2020 GE1, 2020 GD1, 2020 GC1, 2020 GB1, 2020 FW4
`C401`	program code 1 via Kuban State Univ. Obs. in Russia, 1 in MPEC 2020-G42 -- 52768
`130`	Lumezzane Obs. in Italy, 2 in MPEC 2020-G42 -- 9400, 6047
`K30`	Luscherz Obs. in Switzerland, 1 in MPEC 2020-G44 -- 2020 GC1
`K38`	M57 Obs. in Italy, 1 in MPEC 2020-G44 -- 2020 GC1
`K95`	MASTER-II Sutherland in South Africa, 2 in MPEC 2020-G42 -- 86667, 20826
`B67`	Mirasteilas Obs. in Switzerland, 2 in MPEC 2020-G42 -- 539940, 190166
`V01`	Mountainville Obs. in Utah, 1 in MPEC 2020-G47 -- 2020 GF1
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 27 in MPECs 2020-G42, 2020-G43, 2020-G45, 2020-G46, 2020-G48, 2020-G50, 2020-G51, 2020-G52, 2020-G53, 2020-G54, 2020-G56, 2020-G57, 2020-G58, 2020-G59, 2020-G60, 2020-G61, 2020-G62 & 2020-G63 -- 2020 GW1, 2020 GV1, 2020 GU1, 2020 GT1, 2020 GS1, 2020 GR1, 2020 GQ1, 2020 GP1, 2020 GN1, 2020 GM1, 2020 GL1, 2020 GK1, 2020 GJ1, 2020 GG1, 2020 GE1, 2020 GD1, 2020 GB1, 2020 FN1, 2020 FF5, 2003 AA3, 86067, 482244, 463282, 237551, 144861, 141525, 139289
`Z80`	Northolt Branch Obs. in England, 5 in MPECs 2020-G42, 2020-G43 & 2020-G44 -- 2020 GC1, 2020 GB1, 2020 FW4, 2020 DM4, 2017 YT5
`C23`	Olmen Obs. in Belgium, 2 in MPEC 2020-G42 -- 52768, 413989
`F51`	Pan-STARRS 1 (PS1) in Hawaii, 12 in MPECs 2020-G42, 2020-G44, 2020-G45, 2020-G48, 2020-G49, 2020-G51 & 2020-G55 -- 2020 GO1, 2020 GK1, 2020 GH1, 2020 GG1, 2020 GD1, 2020 GC1, 2020 FX4, 2019 UT9, 482244, 274138, 162080, 138175
`F52`	Pan-STARRS 2 (PS2) in Hawaii, 4 in MPECs 2020-G42 & 2020-G43 -- 2020 GB1, 86067, 525364, 136993
`K63`	Pascoli Obs. in Italy, 1 in MPEC 2020-G44 -- 2020 GC1
`B49`	Paus Obs. in Spain, 5 in MPECs 2020-G44, 2020-G45, 2020-G46, 2020-G47 & 2020-G49 -- 2020 GH1, 2020 GF1, 2020 GE1, 2020 GD1, 2020 GC1
`K80`	Platanus Obs., 1 in MPEC 2020-G43 -- 2020 GB1
`D29`	Purple Mtn. Obs. Xuyi Station in China, 11 in MPEC 2020-G42 -- 2020 FR5, 2013 AO27, 2001 GS2, 85628, 52768, 373428, 363599, 276274, 137064, 136618, 1917
`L04`	ROASTERR-1 in Romania, 6 in MPECs 2020-G42, 2020-G43 & 2020-G44 -- 2020 GC1, 2020 GB1, 65690, 539940, 52768, 373428
`K61`	Rokycany Obs. in the Czech Republic, 2 in MPECs 2020-G43 & 2020-G47 -- 2020 GF1, 2020 GB1
`L40`	Saarbruecken Rastpfuhl Obs., 1 in MPEC 2020-G42 -- 52768
`C95`	SATINO-1 in France, 1 in MPEC 2020-G42 -- 2019 YV3
`204`	Schiaparelli Obs. in Italy, 7 in MPECs 2020-G43, 2020-G44, 2020-G45, 2020-G46, 2020-G47, 2020-G49 & 2020-G51 -- 2020 GK1, 2020 GH1, 2020 GF1, 2020 GE1, 2020 GD1, 2020 GC1, 2020 GB1
`033`	Schwarzschild Obs. in Germany, 21 in MPECs 2020-G42, 2020-G43, 2020-G44, 2020-G45, 2020-G46, 2020-G47, 2020-G49, 2020-G51, 2020-G53, 2020-G54, 2020-G55 & 2020-G56 -- 2020 GP1, 2020 GO1, 2020 GN1, 2020 GM1, 2020 GM, 2020 GK1, 2020 GH1, 2020 GF1, 2020 GE1, 2020 GE, 2020 GD1, 2020 GC1, 2020 GC, 2020 GB1, 2020 FW4, 2020 FV6, 2020 FQ6, 2020 FO5, 2020 FM6, 2020 FK3, 2020 FF5
`G40*`	program code "*" (19) via Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2020-G44 -- 2020 GC1
`W885`	M. Kumrucu-Lohmiller in Massachusetts via Slooh.com Chile Obs. in Chile, 1 in MPEC 2020-G42 -- 2020 FZ6
`L39`	Spica Obs., 1 in MPEC 2020-G44 -- 2020 GC1
`I93`	St. Pardon de Conques Obs. in France, 8 in MPECs 2020-G43, 2020-G44, 2020-G45, 2020-G46, 2020-G47, 2020-G49, 2020-G51 & 2020-G55 -- 2020 GO1, 2020 GK1, 2020 GH1, 2020 GF1, 2020 GE1, 2020 GD1, 2020 GC1, 2020 GB1
`I52`	Steward Obs. Mt. Lemmon Station in Arizona, 26 in MPECs 2020-G42, 2020-G43, 2020-G45, 2020-G46, 2020-G47, 2020-G48, 2020-G49, 2020-G51, 2020-G52, 2020-G53, 2020-G54, 2020-G55, 2020-G56, 2020-G57, 2020-G58, 2020-G59, 2020-G60, 2020-G61, 2020-G62 & 2020-G63 -- 2020 GW1, 2020 GV1, 2020 GU1, 2020 GT1, 2020 GS1, 2020 GR1, 2020 GQ1, 2020 GP1, 2020 GO1, 2020 GN1, 2020 GM1, 2020 GL1, 2020 GL, 2020 GK1, 2020 GH1, 2020 GG1, 2020 GF1, 2020 GE1, 2020 GD1, 2020 GB1, 2020 FV2, 2020 FK3, 2020 FB6, 2020 FA1, 2020 DT3, 2019 WR2
`673!`	Jana Pittichova Chesley via Table Mtn. Obs. in southern California, 1 in MPEC 2020-G59 -- 2020 GS1
`A16`	Tentlingen Obs. in Switzerland, 3 in MPEC 2020-G42 -- 436324, 40267, 9400
`T12`	UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2020-G42 -- 2020 BO3
`L01`	Visnjan Obs. in Croatia, 14 in MPECs 2020-G43, 2020-G44, 2020-G45, 2020-G46, 2020-G47, 2020-G48, 2020-G49, 2020-G51, 2020-G53, 2020-G55, 2020-G56, 2020-G57, 2020-G58 & 2020-G61 -- 2020 GU1, 2020 GR1, 2020 GQ1, 2020 GP1, 2020 GO1, 2020 GM1, 2020 GK1, 2020 GH1, 2020 GG1, 2020 GF1, 2020 GE1, 2020 GD1, 2020 GC1, 2020 GB1
`Z92`	West Park Obs. in England, 1 in MPEC 2020-G42 -- 52768
`718`	Wiggins Obs. in Utah, 1 in MPEC 2020-G44 -- 2020 GC1
`I15`	Wishing Star Obs. in Rhode Island, 3 in MPEC 2020-G42 -- 2020 FW4, 90367, 52768
`I41`	Zwicky Transient Facility in southern California, 1 in MPEC 2020-G42 -- 2019 SH6

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

Impact Risk Monitoring on 5 April '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 GO1	NEODyS	2358	2064-2116	77	4.04e-05	-6.02	-6.79	0	NEODyS: "Based on 26 optical observations (of which 0 are rejected as outliers) from 2020-04-02.471 to 2020-04-05.429."
2020 GO1	JPL Sentry	1600	2064-2119	49	0.0001132084465	-5.59	-6.20	0	JPL: Computed at 08:33 today Pacific time based on 26 observations spanning 2.9582 days (2020-Apr-02.47007 to 2020-Apr-05.4283). Diameter approximately 0.010 km. from weighted mean H=27.69.

2020 GK1	JPL Sentry	1600	2105-2105	1	1.018e-10	-10.10	-10.1	0	JPL: Computed at 08:30 today Pacific time based on 34 observations spanning 1.8786 days (2020-Apr-03.43665 to 2020-Apr-05.31527). Diameter approximately 0.031 km. from weighted mean H=25.17.

2020 GB1	NEODyS	2358	2049-2116	33	5.77e-06	-6.24	-6.67	0	NEODyS: "Based on 80 optical observations (of which 0 are rejected as outliers) from 2020-04-02.536 to 2020-04-05.195."
2020 GB1	JPL Sentry	1600	2049-2116	17	2.2571322e-05	-5.44	-5.48	0	JPL: Computed at 08:15 today Pacific time based on 80 observations spanning 2.6590 days (2020-Apr-02.534924 to 2020-Apr-05.19391). Diameter approximately 0.015 km. from weighted mean H=26.80.

2020 GH	NEODyS	1600	R E M O V E D						-

2020 GE	NEODyS	2358	2089-2115	26	1.35e-04	-6.00	-6.08	0	NEODyS: "Based on 20 optical observations (of which 0 are rejected as outliers) from 2020-03-29.510 to 2020-04-05.089."
2020 GE	JPL Sentry	1600	2089-2119	6	8.70282e-05	-6.19	-6.39	0	JPL: Computed at 07:08 today Pacific time based on 20 observations spanning 6.5795 days (2020-Mar-29.509111 to 2020-Apr-05.088641). Diameter approximately 0.007 km. from weighted mean H=28.36.

2020 FV6	NEODyS	2358	2092-2103	3	9.95e-08	-5.95	-5.96	0	NEODyS #2 for the day: "Based on 34 optical observations (of which 1 are rejected as outliers) from 2020-03-29.511 to 2020-04-05.064."
2020 FV6	JPL Sentry	1600	2078-2092	2	1.04943e-07	-5.93	-5.96	0	JPL: Computed at 06:58 today Pacific time based on 34 observations spanning 6.5527 days (2020-Mar-29.51039 to 2020-Apr-05.06312). Diameter approximately 0.090 km. from weighted mean H=22.88.

2020 FA1	NEODyS	2358	2072-2118	5	3.44e-07	-7.45	-7.55	0	NEODyS: "Based on 50 optical observations (of which 0 are rejected as outliers) from 2020-03-16.480 to 2020-04-05.175."
2020 FA1	JPL Sentry	1600	2072-2119	12	3.481241e-05	-5.56	-6.13	0	JPL: Computed at 07:03 today Pacific time based on 50 observations spanning 19.694 days (2020-Mar-16.47938 to 2020-Apr-05.17372). Diameter approximately 0.018 km. from weighted mean H=26.32.

2019 DS1	NEODyS	1600	R E M O V E D						-

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 5 April '20

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

2358

Noted that NEODyS has updated its 2020 FA1 risk assessment - see above
Noted that NEODyS has updated its 2020 FV6 risk assessment - see above
Noted that NEODyS has posted 2020 GB1 as an impact risk - see above
Noted that NEODyS has updated its 2020 GE risk assessment - see above
Noted that NEODyS has posted 2020 GO1 as an impact risk - see above

1600

Noted that NEODyS has removed 2019 DS1 as an impact risk - see above
Noted that JPL Sentry has updated its 2020 FA1 risk assessment - see above
Noted that JPL Sentry has updated its 2020 FV6 risk assessment - see above
Noted that NEODyS has updated its 2020 FV6 risk assessment - see above
Noted that JPL Sentry has posted 2020 GB1 as an impact risk - see above
Noted that JPL Sentry has updated its 2020 GE risk assessment - see above
Noted that NEODyS has removed 2020 GH as an impact risk - see above
Noted that JPL Sentry has posted 2020 GK1 as an impact risk - see above
Noted that JPL Sentry has posted 2020 GO1 as an impact risk - see above
Grabbed MPEC 2020-G42 - Daily Orbit Update - see above
Grabbed MPEC 2020-G43 - 2020 GB1 - see above
Grabbed MPEC 2020-G44 - 2020 GC1 - see above
Grabbed MPEC 2020-G45 - 2020 GD1 - see above
Grabbed MPEC 2020-G46 - 2020 GE1 - see above
Grabbed MPEC 2020-G47 - 2020 GF1 - see above
Grabbed MPEC 2020-G48 - 2020 GG1 - see above
Grabbed MPEC 2020-G49 - 2020 GH1 - see above
Grabbed MPEC 2020-G50 - 2020 GJ1 - see above
Grabbed MPEC 2020-G51 - 2020 GK1 - see above
Grabbed MPEC 2020-G52 - 2020 GL1 - see above
Grabbed MPEC 2020-G53 - 2020 GM1 - see above
Grabbed MPEC 2020-G54 - 2020 GN1 - see above
Grabbed MPEC 2020-G55 - 2020 GO1 - see above
Grabbed MPEC 2020-G56 - 2020 GP1 - see above
Grabbed MPEC 2020-G57 - 2020 GQ1 - see above
Grabbed MPEC 2020-G58 - 2020 GR1 - see above
Grabbed MPEC 2020-G59 - 2020 GS1 - see above
Grabbed MPEC 2020-G60 - 2020 GT1 - see above
Grabbed MPEC 2020-G61 - 2020 GU1 - see above
Grabbed MPEC 2020-G62 - 2020 GV1 - see above
Grabbed MPEC 2020-G63 - 2020 GW1 - see above

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