2020-05-03 Tracking News

Contents on 3 May '20

Radar Astrometry -- seven objects
IAU Minor Planet Center
- NEOCP Activity -- 57 listings
- New MPECs -- eight MPECs
Observers -- 40 observers
Impact Risk Monitoring -- six objects
Chronology

Asteroid/Comet Connection (A/CC) Resources:

Consolidated Risk Tables - the CRT page
Of 1131 risk-listed objects, 53 have had news in the last 31 days. Updated at 1803 UTC on 3 May.
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 3 May '20

Radar observation of seven objects

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

Data update noted at 0411 UTC when the database was dated 2 May

2020 HD10 (close passer) from Arecibo (May 1.19 velocity)
2020 DT3 from Arecibo (April 6.78 velocity & 6.80 range)
52768 1998 OR2 from Arecibo (April 22.02 range)

Data update noted at 0500 UTC when the database was dated 2 May

2020 HW3 from Arecibo (April 24.23 velocity, 24.24 velocity & 24.25 range)
388945 2008 TZ3 (close passer) from Arecibo (April 28.11 range)

Data update noted at 1800 UTC when the database was dated 2 May

2020 HK3 (close passer) from Arecibo (April 29.15 velocity & 29.17 range)
2020 HU2 (close passer, NHATS target) from Arecibo (April 30.17 velocity) - NHATS

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

NEOCP Activity on 3 May '20

The MPC's NEO Confirmation Page has 57 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 57 objects listed. Of these, 31 were "one nighters." So far The Tracking News has counted a total of 68 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 3 May '20

Minor Planet Electronic Circulars

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

MPEC 2020-J20 time-stamped "00:05 UT" - 2018 EP1 - see below
MPEC 2020-J21 time-stamped "00:15 UT" - Comet C/2020 H4 (Leonard) - see below
MPEC 2020-J22 time-stamped "00:48 UT" - Comet C/2020 H5 (Robinson) - see below
MPEC 2020-J23 time-stamped "01:56 UT" - Comet C/2020 H6 (ATLAS) - see below
MPEC 2020-J24 time-stamped "03:33 UT" - 2020 JB - see below
MPEC 2020-J25 time-stamped "12:03 UT" - Daily Orbit Update - see below
MPEC 2020-J26 time-stamped "13:41 UT" - 2020 HH10 - see below
MPEC 2020-J27 time-stamped "22:15 UT" - 2020 JC

MPEC 2020-J27 - "22:15 UT" - 2020 JC

K20J00C 2020 JC (small asteroid, H=25.0 ~34m) was picked up at 0436 UT on 2 May by the Mt. Lemmon Survey (MLS), observing it at May 2.19-21p4 and 3.27-28p4. This detection was confirmed by Sandlot Obs. (May 2.28-30p2), Steward Obs. Mt. Lemmon Station (May 2.29-30p4), and Visnjan Obs. (May 3.84-86p3).

MPEC 2020-J26 - "13:41 UT" - 2020 HH10

K20H10H 2020 HH10 (small asteroid, H=23.3 ~74m) was picked up at 0941 UT on 29 April by MLS, observing it at April 29.40-42p3 at G=21.5-22.1 and May 3.35p4 at G=20.7-22.3. This detection was confirmed by the Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) (April 29.47p3), Astronomical Research Obs. Westfield (May 1.32-33p3 at V=21.6-22.1), and Steward Mt. Lemmon Sta. (May 2.39-40p3 at G=21.9-23.6).

<< DOU on 3 May '20 >> MPEC 2020-J25 - "12:03 UT" - Daily Orbit Update

Observations of risk-listed objects
K20H08Y 2020 HY8 (small asteroid, Q=4.479 AU, arc=6 days, H=22.7 ~98m) from MLS (May 2.29-31p4) and Steward Mt. Lemmon Sta. (May 3.38-39p4)
K20H07M 2020 HM7 (small asteroid, arc=5 days, H=25.9 ~22m, close passer, NHATS target) from Schiaparelli Obs. (April 30.93-94p2)
K20H06L 2020 HL6 (small asteroid, arc=12 days, H=28.0 ~9m, close passer, NHATS target) from Schiaparelli Obs. (May 1.93-94p2)
K20H04Q 2020 HQ4 (small asteroid, arc=10 days, H=26.8 ~15m, close passer, NHATS target) from MLS (May 2.19-21p3)
K18T05P 2018 TP5 (small asteroid, arc=54 days, H=25.8 ~23m, close passer) from UH/Tholen NEO Follow-Up 2.24m Telescope (2018 Nov. 6.39-40p2 at G=24.08-09, 2018 Nov. 10.35-36p2 at G=23.70-24.23 & 2018 Nov. 14.45p1 at G=24.43)
Observations of recently (no longer) risk-listed objects
K20H04Z 2020 HZ4 (small asteroid, Q=4.364 AU, arc=17 days, H=24.2 ~49m) from Steward Mt. Lemmon Sta. (May 3.46p3)
Observations of close-passing objects
K20J00A 2020 JA (Q=5.570 AU, arc=2 days, H=27.2 ~12m) from Squirrel Valley Obs. (May 2.12-16p3), Pomona College Table Mtn. Obs. (PCTMO) (May 2.32p1, 2.36p1 & 2.41p1), and MLS (May 3.20-21p3)
K20H10D 2020 HD10 (arc=3 days, H=27.3 ~12m) from Schiaparelli Obs. (May 1.90-91p3), Great Shefford Obs. (May 1.91-92p4), and Northolt Branch Obs. (May 1.93-94p3)
K20H08R 2020 HR8 (arc=6 days, H=26.9 ~14m, NHATS target) from Steward Mt. Lemmon Sta. (May 3.19p4)
K20H07F 2020 HF7 (arc=7 days, H=26.2 ~19m) from Steward Mt. Lemmon Sta. (May 3.39-40p4)
K20H06B 2020 HB6 (arc=9 days, H=24.2 ~49m, NHATS target) from Schiaparelli Obs. (April 30.90-91p3), JPL SynTrack Robotic Telescope (May 2.39-43p4), and Foxfire Village Obs. (May 3.06-07p3)
K16H06P 2016 HP6 (arc=3 opp, H=25.4 ~28m, NHATS target) from Schiaparelli Obs. (April 30.87-90p3)
K14J25O 2014 JO25 (q=0.234 AU, arc=5 opp, H=17.8 ~933m, radar support) from Schiaparelli Obs. (April 30.92p3) and ATLAS Mauna Loa (May 2.39-41p4)
c8945 388945 2008 TZ3 from Pin Oak Obs. (May 2.11p1 & 2.16-17p2) and ATLAS Haleakala (May 2.38-40p4)
Observation campaigns (NHATS targets, radar support)
K20H08B 2020 HB8 (arc=5 days, H=24.9 ~35m, NHATS) from ARO Westfield (May 1.30-31p2 at V=22.0-22.2 & 1.38-39p3 at V=22.0-22.3)
K19Y03W 2019 YW3 (arc=130 days, H=22.8 ~93m, NHATS) from MLS (May 2.34-36p3)
J0166 190166 2005 UP156 (radar) from the Zwicky Transient Facility (ZTF) (April 29.20p3 & 29.27p1)
-- NHATS target table -- Planetary radar schedules: Arecibo & Goldstone
Observations of small asteroids (H>22.0)
K20H10C 2020 HC10 (arc=4 days, H=22.2 ~123m) from Steward Mt. Lemmon Sta. (May 3.45-46p4)
K20H09O 2020 HO9 (arc=7 days, H=23.5 ~68m) from Steward Mt. Lemmon Sta. (May 3.23-24p4)
K20H09G 2020 HG9 (arc=5 days, H=23.2 ~78m) from MLS (May 2.34-35p4) and Steward Mt. Lemmon Sta. (May 3.40p2)
K20H06N 2020 HN6 (arc=8 days, H=22.7 ~98m) from MLS (May 2.17-18p4)
K20H04L 2020 HL4 (arc=12 days, H=24.6 ~41m) from MLS (May 2.21-23p4)
K20H04G 2020 HG4 (arc=12 days, H=26.2 ~19m) from ARO Westfield (May 1.27-28p3 at V=22.2-3)
K20H04D 2020 HD4 (arc=18 days, H=24.8 ~37m) from Steward Mt. Lemmon Sta. (May 3.36-37p3)
K20H03E 2020 HE3 (arc=10 days, H=23.0 ~85m) from ARO Westfield (April 22.10-11p3)
K20H02P 2020 HP2 (arc=12 days, H=22.4 ~112m) from ARO Westfield (May 1.22-23p3 at V=22.0-22.2)
K20H01X 2020 HX1 (arc=13 days, H=24.0 ~54m) from ARO Westfield (May 1.21-23p3 at V=22.1-4)
K20H01U 2020 HU1 (i=43.5°, arc=12 days, H=23.5 ~68m) from ARO Westfield (May 1.09p2 at V=22.1)
K20H01D 2020 HD1 (arc=21 days, H=23.7 ~62m) from ARO Westfield (May 1.17-19p3 at V=22.2)
K10J03J 2010 JJ3 (arc=2 opp, H=23.7 ~62m) from ATLAS Mauna Loa (May 2.46-51p4)
K10G06B 2010 GB6 (arc=3 opp, H=22.1 ~129m) from ARO Westfield (May 1.34-36p3 at V=22.1-4)
K00H40O 2000 HO40 (q=0.360 AU, arc=3 opp, H=22.2 ~123m) from ATLAS Mauna Loa (May 2.41-45p4)
Observations of other objects
K20H10A 2020 HA10 (i=49.6°, Q=0.947 AU, arc=5 days, H=18.9 ~562m) from Steward Mt. Lemmon Sta. (May 3.47-48p3)
K20H06V 2020 HV6 (arc=9 days, H=21.6 ~162m) from ARO Westfield (May 1.25-27p3 at V=21.6-22.2)
K20H05H 2020 HH5 (Q=4.494 AU, arc=9 days, H=19.1 ~513m) from ARO Westfield (April 22.24-26p3 at V=22.0-22.1)
K20H02V 2020 HV2 (Q=4.855 AU, arc=15 days, H=18.9 ~562m) from Pan-STARRS 1 (PS1) (May 2.51-53p4)
K20H02B 2020 HB2 (arc=17 days, H=20.4 ~282m) from Steward Mt. Lemmon Sta. (May 3.44p3)
K20H01W 2020 HW1 (arc=17 days, H=19.2 ~490m) from the Catalina Sky Survey (CSS) (May 2.38-40p3) and Steward Mt. Lemmon Sta. (May 3.46-47p4)
K20H01F 2020 HF1 (arc=16 days, H=19.1 ~513m) from ATLAS Mauna Loa (May 2.38-40p4)
K20G03F 2020 GF3 (arc=30 days, H=19.8 ~371m) from ATLAS Haleakala (May 2.39-42p4) and Foxfire Village Obs. (May 3.11-12p3)
K20G02D 2020 GD2 (arc=182 days, H=20.5 ~269m) from ATLAS Mauna Loa (May 2.40-42p4)
K20F06B 2020 FB6 (arc=38 days, H=20.7 ~245m) from ATLAS Haleakala (May 2.56-62p4)
K20E00M 2020 EM (arc=57 days, H=19.8 ~371m) from ARO Westfield (May 1.08-09p3 at V=22.1-3)
K20B16B 2020 BB16 (arc=63 days, H=20.3 ~295m) from SATINO-1 (Feb. 18.12-13p2)
K17M07W 2017 MW7 (arc=4 opp, H=21.2 ~195m) from ARO Westfield (May 1.30p3 at V=22.1-2)
K15L21K 2015 LK21 (Q=4.435 AU, arc=3 opp, H=17.5 ~1.07 km) from MLS (May 2.43-45p4)
K15FX2P 2015 FP332 (i=36.5°, Q=4.790 AU, arc=5 opp, H=17.3 ~1.17 km) from CSS (May 2.38-40p3)
K14UJ2A 2014 UA192 (arc=3 opp, H=19.3 ~467m) from MLS (May 2.19-21p4)
K14H04O 2014 HO4 (arc=4 opp, H=19.2 ~490m) from CSS (May 2.29-31p4)
K11F02Z 2011 FZ2 (Q=4.750 AU, arc=4 opp, H=17.5 ~1.07 km) from CSS (May 2.45-46p4)
K10X11D 2010 XD11 (q=0.326 AU, Q=4.098 AU, arc=4 opp, H=17.9 ~891m) from CSS (May 2.18-20p4)
K09K08K 2009 KK8 (arc=3 opp, H=18.6 ~645m) from MLS (May 2.17-18p4)
K08L16W 2008 LW16 (arc=2 opp, H=20.0 ~339m) from PS1 (May 2.43-46p3)
K06K21Q 2006 KQ21 (arc=4 opp, H=18.5 ~676m) from MLS (May 2.34-36p3)
K04M02W 2004 MW2 (arc=5 opp, H=19.3 ~467m) from MLS (May 2.46-47p4)
K04F29F 2004 FF29 (arc=6 opp, H=18.1 ~812m) from MLS (May 2.31-33p4)
J98H03N 1998 HN3 (Q=5.029 AU, arc=4 opp, H=18.3 ~741m) from MLS (May 2.19-21p4)
r9940 539940 2017 HW1 from Schiaparelli Obs. (April 30.96-03p5) and ATLAS Haleakala (May 2.39-42p4)
q2684 522684 2016 JP from ATLAS Haleakala (May 2.56-59p4)
o0094 500094 2012 BC20 from ZTF (April 29.19p2 & 29.24p2)
n5891 495891 2004 VS60 from MLS (May 2.38-40p4)
n4706 494706 2005 GL9 from MLS (May 2.34-35p4)
l1034 471034 2009 TG8 from MLS (May 2.31-33p3)
k8910 468910 2014 KQ76 from ATLAS Haleakala (May 2.47-49p4)
j6946 456946 2008 AF32 from ARO Westfield (May 1.37-39p3 at V=21.8-22.2)
h6324 436324 2010 GZ6 from CSS (May 2.29-31p4)
h6030 436030 2009 JO2 from ATLAS Haleakala (May 2.56-62p5) and Northolt Branch Obs. (May 2.94-95p3)
d4783 394783 2008 HD3 from ATLAS Mauna Loa (May 2.41-45p4)
c7733 387733 2003 GS from MLS (May 2.43-49p8)
b3428 373428 1999 TC5 from ZTF (April 29.30-33p2 & 29.37p2)
Y9063 349063 2006 XA from ATLAS Mauna Loa (May 2.59-62p4)
X3555 333555 2005 VY17 from CSS (May 2.29-31p4) and Northolt Branch Obs. (May 2.93-94p3)
X1509 331509 1999 YA from ARO Westfield (May 1.13-15p3 at V=22.0-22.4)
X1471 331471 1984 QY1 from CSS (May 2.47-48p4)
V8050 318050 2004 FC32 from ATLAS Haleakala (May 2.38-40p4)
V5098 315098 2007 EX from ATLAS Mauna Loa (May 2.28-30p4)
R7142 277142 2005 LG8 from MLS (May 2.15-16p4)
L9527 219527 2001 QK142 from MLS (May 2.25-27p4)
L8863 218863 2006 WO127 from Pan-STARRS 2 (PS2) (May 2.54-58p4)
K3217 203217 2001 FX9 from MLS (May 2.31-33p4)
I6822 186822 2004 FE31 from Transit Dreams Obs. (May 2.16-18p2)
H5189 175189 2005 EC224 from Transit Dreams Obs. (May 2.14-19p4) and MLS (May 2.19-21p4)
G4400 164400 2005 GN59 from MLS (May 2.25-27p4)
G3250 163250 2002 GH1 from ATLAS Haleakala (May 2.57-58p4)
F5341 155341 2006 SA218 from PS2 (May 2.48-51p3)
F4589 154589 2003 MX2 from MLS (May 2.23-25p4)
F2978 152978 2000 GJ147 from CSS (May 2.22-24p3)
F2941 152941 2000 FM10 from MLS (May 2.15-16p4)
E4861 144861 2004 LA12 from PS2 (May 2.37-40p3)
E2781 142781 2002 UM11 from PS2 (May 2.53-56p3)
E1053 141053 2001 XT1 from ATLAS Mauna Loa (May 2.41-45p4)
D7199 137199 1999 KX4 from CSS (May 2.34-35p4) and Cancelada Obs. (May 2.91-96p61)
D7064 137064 1998 WP5 from Transit Dreams Obs. (May 2.13-19p4) and MLS (May 2.17-19p4)
D6923 136923 1998 JH2 from Transit Dreams Obs. (May 2.15-20p4) and MLS (May 2.21-23p4)
D6874 136874 1998 FH74 from PS1 (May 2.53-57p4)
A6589 106589 2000 WN107 from ATLAS Haleakala (May 2.27-29p4)
A3067 103067 1999 XA143 from MLS (May 2.47-48p4)
99935 99935 2002 AV4 from Pin Oak Obs. (May 2.17-20p3) and ATLAS Mauna Loa (May 2.39-41p4)
86667 86667 2000 FO10 from Transit Dreams Obs. (May 2.16-20p3) and ATLAS Haleakala (May 2.45-48p4)
86067 86067 1999 RM28 from ZTF (May 2.30p1 & 2.37p1) and PS2 (May 2.36-40p4)
85628 85628 1998 KV2 from Transit Dreams Obs. (May 2.14-20p4) and ATLAS Haleakala (May 2.45-48p4)
68350 68350 2001 MK3 from Eden Obs. (April 30.85p1) and ATLAS Haleakala (May 2.52-56p4)
68278 68278 2001 FC7 from Transit Dreams Obs. (May 2.13-19p4) and MLS (May 2.19-20p4)
66251 66251 1999 GJ2 from Transit Dreams Obs. (May 2.14-19p4)
54401 54401 2000 LM from ATLAS Mauna Loa (May 2.39-41p4)
37655 37655 Illapa (1994 PM) from PS2 (May 2.47-50p3)
36183 36183 1999 TX16 from MLS (May 2.36-38p4) and ATLAS Mauna Loa (May 2.51-59p4)
35107 35107 1991 VH from ZTF (April 29.14-22p4)
30825 30825 1990 TG1 from ATLAS Haleakala (May 2.27-29p4)
20460 20460 Robwhiteley (1999 LO28) from MLS (May 2.46-47p8)
19764 19764 2000 NF5 from ATLAS Mauna Loa (May 2.57-60p4)
18109 18109 2000 NG11 from MLS (May 2.21-23p4)
15817 15817 Lucianotesi (1994 QC) from MLS (May 2.44-45p4)
11405 11405 1999 CV3 from ATLAS Haleakala (May 2.28-30p4)
11284 11284 Belenus (1990 BA) from ATLAS Mauna Loa (May 2.43-44p4)
08035 8035 1992 TB from MLS (May 2.46-47p4)
08014 8014 1990 MF from MLS (May 2.36-38p4) and ATLAS Mauna Loa (May 2.51-59p4)
07753 7753 1988 XB from MLS (May 2.21-23p4)
06050 6050 Miwablock (1992 AE) from MLS (May 2.34-35p4) and ATLAS Mauna Loa (May 2.51-59p4)
04954 4954 Eric (1990 SQ) from ATLAS Mauna Loa (May 2.39-41p4)
04257 4257 Ubasti (1987 QA) from CSS (May 2.43-44p3)
03352 3352 McAuliffe (1981 CW) from ATLAS Mauna Loa (May 2.54-55p4)
01866 1866 Sisyphus (1972 XA) from CSS (May 2.16-18p4) and PS1 (May 3.26p1 & 3.30p1)
01685 1685 Toro (1948 OA) from ATLAS Mauna Loa (May 2.57-62p8)
01627 1627 Ivar (1929 SH) from Pin Oak Obs. (May 2.09-14p3) and ATLAS Haleakala (May 2.31-33p4)

MPEC 2020-J24 - "03:33 UT" - 2020 JB

K20J00B 2020 JB (small asteroid, H=23.4 ~71m) was picked up at 1039 UT on 1 May by CSS, observing it at May 1.44-48p7. This detection was confirmed by Steward Mt. Lemmon Sta. (May 1.48p8 & 2.41p4), Schiaparelli Obs. (May 2.04-07p5), Visnjan Obs. (May 2.08p6), Squirrel Valley Obs. (May 2.19-22p5), Cordell-Lorenz Obs. (May 2.31-33p4), Tebbutt Obs. (May 2.31-34p4), Farpoint Obs. (May 2.33-35p6), Sandlot Obs. (May 2.37p3), PCTMO (May 2.46-50p3), PS2 (May 2.58-60p3), Great Shefford Obs. (May 2.89p3), and Paus Obs. (May 2.92p2).

MPEC 2020-J23 - "01:56 UT" - Comet C/2020 H6 (ATLAS)

CK20H060 C/2020 H6 (ATLAS) (i=79.8°, q=4.689 AU, TP=2021 Oct. 1.29404 TT) was picked up at 0813 UT on 22 April by ATLAS Haleakala, observing it at April 22.34-36p4. This detection was confirmed by Gisborne Obs. (April 24.38-41p4), Hidetaka Sato via iTelescope Obs. Siding Spring (April 24.64p2), Galilei Obs. (April 25.02-05p3, 29.14-15p3 & May 2.95-96p3), Aorangi Iti Obs. (April 25.39-40p4), Perth Obs. (April 26.51-54p2, 27.51-55p2, 28.55-58p2 & 29.55-57p2), Mt. John Obs. (April 28.41-42p3), Ernesto Guido via iTelescope Obs. Siding Spring (April 28.44-45p2), B. Lutkenhoner via Slooh.com Chile Obs. (April 29.15-16p3), G. Gasparovic via Slooh.com Chile Obs. (April 30.01-05p2), Campo dos Amarais Obs. (April 30.10-16p6), and Arcadia Obs. (April 30.54-57p3 & May 2.43-46p3).

MPEC 2020-J22 - "00:48 UT" - Comet C/2020 H5 (Robinson)

CK20H050 C/2020 H5 (Robinson) (i=70.0°, q=9.397 AU, Q=301.888 AU, TP=2020 June 15.78983 TT) was picked up at 0756 UT on 22 April by ATLAS Haleakala, observing it at April 22.33-35p4. This detection was confirmed by Gisborne Obs. (April 24.34-37p4, 25.41-45p3 & 28.38-46p6), Sato/iTelObs-SSO (April 24.65p2), Galilei Obs. (April 24.93-97p2 & 30.13-14p2), Arcadia Obs. (April 25.53-56p3 & May 2.48-51p3), Perth Obs. (April 26.55-58p2, 28.56-58p2 & 29.57-59p2), Mt. John Obs. (April 28.40p4), Lutkenhoner/Slooh.com Chile (April 29.98-99p2), program code "(" (17) via Slooh.com Chile Obs. (April 30.13-15p2), and Gasparovic/Slooh.com Chile (May 2.22-25p3).

MPEC 2020-J21 - "00:15 UT" - Comet C/2020 H4 (Leonard)

CK20H040 C/2020 H4 (Leonard) (i=84.6°, q=0.927 AU, Q=120.745 AU, TP=2020 Aug. 29.27475 TT) was picked up at 1120 UT on 21 April by MLS, observing it at April 21.47-49p4, 24.46-48p4, and 30.45-46p4. This detection was confirmed by Sato/iTelObs-SSO (April 21.80p2), ESA Optical Ground Station (ESA OGS) (April 23.22p3 & 25.22p3), Steward Mt. Lemmon Sta. (April 26.48-49p3, 27.48p3 & 28.44-45p3), and Visnjan Obs. (April 28.09p3).

MPEC 2020-J20 - "00:05 UT" - 2018 EP1

K18E01P 2018 EP1 (q=0.339 AU, H=18.8 ~589m) from PS1 (April 2.57-59p2 at G=22.3-5, 21.50-52p3 at G=21.3-4 & 30.47-51p4 at G=20.7-9), MLS (May 2.27-29p4), and Steward Mt. Lemmon Sta. (May 2.37-38p3)

Observers on 3 May '20

A total of 40 observers appear in today's MPECs.

Code	Observer / observatory
`R57`	Aorangi Iti Obs. in New Zealand, 1 in MPEC 2020-J23 -- C/2020 H6
`E23`	Arcadia Obs. in New South Wales, 2 in MPECs 2020-J22 & 2020-J23 -- C/2020 H6, C/2020 H5
`251`	Arecibo in Puerto Rico, 7 in radar -- 2020 HW3, 2020 HU2, 2020 HK3, 2020 HD10, 2020 DT3, 52768, 388945
`H21`	Astronomical Research Obs. Westfield in Illinois, 15 in MPECs 2020-J25 & 2020-J26 -- 2020 HX1, 2020 HV6, 2020 HU1, 2020 HP2, 2020 HH5, 2020 HH10, 2020 HG4, 2020 HE3, 2020 HD1, 2020 HB8, 2020 EM, 2017 MW7, 2010 GB6, 456946, 331509
`T05`	ATLAS Haleakala in Hawaii, 18 in MPECs 2020-J22, 2020-J23 & 2020-J25 -- C/2020 H6, C/2020 H5, 2020 GF3, 2020 FB6, 86667, 85628, 68350, 539940, 522684, 468910, 436030, 388945, 318050, 30825, 163250, 11405, 106589, 1627
`T08`	ATLAS Mauna Loa in Hawaii, 19 in MPEC 2020-J25 -- 2020 HF1, 2020 GD2, 2014 JO25, 2010 JJ3, 2000 HO40, 99935, 54401, 394783, 36183, 349063, 315098, 19764, 141053, 11284, 8014, 6050, 4954, 3352, 1685
`X74`	Campo dos Amarais Obs., 1 in MPEC 2020-J23 -- C/2020 H6
`Z36`	Cancelada Obs., 1 in MPEC 2020-J25 -- 137199
`703`	Catalina Sky Survey (CSS) in Arizona, 13 in MPECs 2020-J24 & 2020-J25 -- 2020 JB, 2020 HW1, 2015 FP332, 2014 HO4, 2011 FZ2, 2010 XD11, 436324, 333555, 331471, 152978, 137199, 4257, 1866
`V06`	Catalina Sky Survey Kuiper Telescope in Arizona, 1 in MPEC 2020-J26 -- 2020 HH10
`850`	Cordell-Lorenz Obs. in Tennessee, 1 in MPEC 2020-J24 -- 2020 JB
`N31`	Eden Obs., 1 in MPEC 2020-J25 -- 68350
`J04`	ESA Optical Ground Station in the Canary Islands, 1 in MPEC 2020-J21 -- C/2020 H4
`734`	Farpoint Obs. in Kansas, 1 in MPEC 2020-J24 -- 2020 JB
`W46`	Foxfire Village Obs., 2 in MPEC 2020-J25 -- 2020 HB6, 2020 GF3
`X31`	Galilei Obs., 2 in MPECs 2020-J22 & 2020-J23 -- C/2020 H6, C/2020 H5
`E94`	Gisborne Obs. in New Zealand, 2 in MPECs 2020-J22 & 2020-J23 -- C/2020 H6, C/2020 H5
`J95`	Great Shefford Obs. in England, 2 in MPECs 2020-J24 & 2020-J25 -- 2020 JB, 2020 HD10
`Q620`	Ernesto Guido in Italy via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2020-J23 -- C/2020 H6
`Q621`	Hidetaka Sato in Japan via iTelescope Obs. Siding Spring in New South Wales, 3 in MPECs 2020-J21, 2020-J22 & 2020-J23 -- C/2020 H6, C/2020 H5, C/2020 H4
`U68`	JPL SynTrack Robotic Telescope, 1 in MPEC 2020-J25 -- 2020 HB6
`474`	Mt. John Obs. in New Zealand, 2 in MPECs 2020-J22 & 2020-J23 -- C/2020 H6, C/2020 H5
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 41 in MPECs 2020-J20, 2020-J21, 2020-J25, 2020-J26 & 2020-J27 -- 2020 JC, 2020 JA, 2020 HY8, 2020 HQ4, 2020 HN6, 2020 HL4, 2020 HH10, 2020 HG9, C/2020 H4, 2019 YW3, 2018 EP1, 2015 LK21, 2014 UA192, 2009 KK8, 2006 KQ21, 2004 MW2, 2004 FF29, 1998 HN3, 68278, 495891, 494706, 471034, 387733, 36183, 277142, 219527, 20460, 203217, 18109, 175189, 164400, 15817, 154589, 152941, 137064, 136923, 103067, 8035, 8014, 7753, 6050
`Z80`	Northolt Branch Obs. in England, 3 in MPEC 2020-J25 -- 2020 HD10, 436030, 333555
`F51`	Pan-STARRS 1 (PS1) in Hawaii, 5 in MPECs 2020-J20 & 2020-J25 -- 2020 HV2, 2018 EP1, 2008 LW16, 136874, 1866
`F52`	Pan-STARRS 2 (PS2) in Hawaii, 7 in MPECs 2020-J24 & 2020-J25 -- 2020 JB, 86067, 37655, 218863, 155341, 144861, 142781
`B49`	Paus Obs. in Spain, 1 in MPEC 2020-J24 -- 2020 JB
`323`	Perth Obs. in Western Australia, 2 in MPECs 2020-J22 & 2020-J23 -- C/2020 H6, C/2020 H5
`V93`	Pin Oak Obs., 3 in MPEC 2020-J25 -- 99935, 388945, 1627
`654`	Pomona College Table Mtn. Obs. (PCTMO) in southern California, 2 in MPECs 2020-J24 & 2020-J25 -- 2020 JB, 2020 JA
`H36`	Sandlot Obs. in Kansas, 2 in MPECs 2020-J24 & 2020-J27 -- 2020 JC, 2020 JB
`C95`	SATINO-1 in France, 1 in MPEC 2020-J25 -- 2020 BB16
`204`	Schiaparelli Obs. in Italy, 8 in MPECs 2020-J24 & 2020-J25 -- 2020 JB, 2020 HM7, 2020 HL6, 2020 HD10, 2020 HB6, 2016 HP6, 2014 JO25, 539940
`W88(`	program code "(" (17) via Slooh.com Chile Obs. in Chile, 1 in MPEC 2020-J22 -- C/2020 H5
`W883`	B. Lutkenhoner in Germany via Slooh.com Chile Obs. in Chile, 2 in MPECs 2020-J22 & 2020-J23 -- C/2020 H6, C/2020 H5
`W884`	G. Gasparovic in Croatia via Slooh.com Chile Obs. in Chile, 2 in MPECs 2020-J22 & 2020-J23 -- C/2020 H6, C/2020 H5
`W34`	Squirrel Valley Obs. in North Carolina, 2 in MPECs 2020-J24 & 2020-J25 -- 2020 JB, 2020 JA
`I52`	Steward Obs. Mt. Lemmon Station in Arizona, 16 in MPECs 2020-J20, 2020-J21, 2020-J24, 2020-J25, 2020-J26 & 2020-J27 -- 2020 JC, 2020 JB, 2020 HZ4, 2020 HY8, 2020 HW1, 2020 HR8, 2020 HO9, 2020 HH10, 2020 HG9, 2020 HF7, 2020 HD4, 2020 HC10, 2020 HB2, 2020 HA10, C/2020 H4, 2018 EP1
`858`	Tebbutt Obs. in New Mexico, 1 in MPEC 2020-J24 -- 2020 JB
`W33`	Transit Dreams Obs., 8 in MPEC 2020-J25 -- 86667, 85628, 68278, 66251, 186822, 175189, 137064, 136923
`T12`	UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2020-J25 -- 2018 TP5
`L01`	Visnjan Obs. in Croatia, 3 in MPECs 2020-J21, 2020-J24 & 2020-J27 -- 2020 JC, 2020 JB, C/2020 H4
`I41`	Zwicky Transient Facility (ZTF) in southern California, 5 in MPEC 2020-J25 -- 86067, 500094, 373428, 35107, 190166

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

Impact Risk Monitoring on 3 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	JPL Sentry	1800	2056-2073	2	4.68068e-08	-6.00	-6.00	0	JPL: Computed at 06:31 today Pacific time based on 39 observations spanning 6.0029 days (2020-Apr-27.38722 to 2020-May-03.39009). Diameter approximately 0.091 km. from weighted mean H=22.84.
2020 HY8	NEODyS	1800	2073	1	6.81e-09	-6.85	-6.85	0	NEODyS: "Based on 39 optical observations (of which 1 are rejected as outliers) from 2020-04-27.388 to 2020-05-03.391."

2020 HM7	NEODyS	1800	R E M O V E D						-

2020 HL6	JPL Sentry	1800	2069-2115	5	7.5934e-07	-7.90	-8.23	0	JPL: Computed at 06:36 today Pacific time based on 35 observations spanning 12.495 days (2020-Apr-19.44533 to 2020-May-01.94015). Diameter approximately 0.008 km. from weighted mean H=28.03.
2020 HL6	NEODyS	1800	2069-2117	10	6.35e-07	-8.09	-8.54	0	NEODyS: "Based on 36 optical observations (of which 1 are rejected as outliers) from 2020-04-19.446 to 2020-05-01.941."

2020 HQ4	JPL Sentry	1800	2052-2120	54	0.0001433146438	-4.99	-5.36	0	JPL: Computed at 06:45 today Pacific time based on 92 observations spanning 10.059 days (2020-Apr-22.14953 to 2020-May-02.20881). Diameter approximately 0.015 km. from weighted mean H=26.82.
2020 HQ4	NEODyS	1800	2051-2118	177	1.6e-04	-4.98	-5.36	0	NEODyS: "Based on 95 optical observations (of which 1 are rejected as outliers) from 2020-04-22.150 to 2020-05-02.210."

2018 TP5	JPL Sentry	1800	2074-2105	26	1.857444e-05	-5.27	-5.89	0	JPL: Computed at 06:34 today Pacific time based on 43 observations spanning 53.735 days (2018-Oct-10.3155 to 2018-Dec-03.050513). Diameter approximately 0.024 km. from weighted mean H=25.71.
2018 TP5	NEODyS	1800	2074-2113	66	1.93e-05	-5.28	-5.9	0	NEODyS: "Based on 43 optical observations (of which 0 are rejected as outliers) from 2018-10-10.316 to 2018-12-03.051."

2016 VA18	JPL Sentry	1800	2022-2116	500	2.5316195e-06	-7.03	-7.69	0	JPL: Computed at 12:49 April 6th of 2017 Pacific time based on 9 observations spanning .14092 days (2016-Nov-06.29285 to 2016-Nov-06.43377). Diameter approximately 0.007 km. from weighted mean H=28.48.

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 3 May '20

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

2308	Grabbed MPEC 2020-J27 - 2020 JC - see above
1800	Noted that JPL Sentry has updated its 2016 VA18 risk assessment - see above Noted that JPL Sentry has updated its 2018 TP5 risk assessment - see above Noted that NEODyS has updated its 2018 TP5 risk assessment - see above Noted that JPL Sentry has updated its 2020 HL6 risk assessment - see above Noted that NEODyS has updated its 2020 HL6 risk assessment - see above Noted that NEODyS has removed 2020 HM7 as an impact risk - see above Noted that JPL Sentry has updated its 2020 HQ4 risk assessment - see above Noted that NEODyS has updated its 2020 HQ4 risk assessment - see above Noted that JPL Sentry has updated its 2020 HY8 risk assessment - see above Noted that NEODyS has updated its 2020 HY8 risk assessment - see above Grabbed MPEC 2020-J25 - Daily Orbit Update - see above Grabbed MPEC 2020-J26 - 2020 HH10 - see above Noted Radar Astrometry database update - see above
0500	Noted Radar Astrometry database update - see above
0411	Grabbed MPEC 2020-J21 - Comet C/2020 H4 (Leonard) - see above Grabbed MPEC 2020-J22 - Comet C/2020 H5 (Robinson) - see above Grabbed MPEC 2020-J23 - Comet C/2020 H6 (ATLAS) - see above Grabbed MPEC 2020-J24 - 2020 JB - see above Noted Radar Astrometry database update - see above
0008	Grabbed MPEC 2020-J20 - 2018 EP1 - see above

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