2020-05-13 Tracking News

Contents on 13 May '20

IAU Minor Planet Center
- NEOCP Activity -- 56 listings
- New MPECs -- two MPECs
Observers -- 22 observers
Impact Risk Monitoring -- two objects
Chronology

Asteroid/Comet Connection (A/CC) Resources:

Consolidated Risk Tables - the CRT page
Of 1135 risk-listed objects, 67 have had news in the last 31 days. Updated at 1631 UTC on 13 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.

NEOCP Activity on 13 May '20

The MPC's NEO Confirmation Page has 56 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 56 objects listed. Of these, 36 were "one nighters." So far The Tracking News has counted a total of 63 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 13 May '20

Minor Planet Electronic Circulars

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

MPEC 2020-J57 time-stamped "12:06 UT" - Daily Orbit Update - see below
MPEC 2020-J58 time-stamped "22:47 UT" - 2020 JX

MPEC 2020-J58 - "22:47 UT" - 2020 JX

K20J00X 2020 JX (small asteroid, H=23.6 ~65m) was picked up at 0636 UT on 12 May by the Mt. Lemmon Survey (MLS), observing it at May 12.28-29p4. This detection was confirmed by Steward Obs. Mt. Lemmon Station (May 12.36-37p3, 13.22p4 & 13.38p3) and Great Shefford Obs. (May 13.89-91p4).

<< DOU on 13 May '20 >> MPEC 2020-J57 - "12:06 UT" - Daily Orbit Update

Observations of risk-listed objects
K19Q07E 2019 QE7 (small asteroid, arc=27 days, H=26.6 ~16m, close passer) from UH/Tholen NEO Follow-Up 2.24m Telescope (2019 Sept. 24.37p1 at G=24.50, 2019 Sept. 25.38-41p2 at G=24.22-72 & 2019 Sept. 27.46p1 at G=24.65)
K14U34X 2014 UX34 (small asteroid, arc=37 days, H=22.2 ~123m) from Pan-STARRS 1 (PS1) (2014 Nov. 9.36-38p3)
Observations of recently (no longer) risk-listed objects
K20H01M 2020 HM1 (Q=4.554 AU, arc=27 days, H=21.1 ~204m) from the Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) (May 13.29-30p4 at G=22.1)
Observations of close-passing objects
K20J00R 2020 JR (arc=7 days, H=25.0 ~34m, NHATS target) from Astronomical Research Obs. Westfield (May 9.24p4) and Steward Mt. Lemmon Sta. (May 13.32p4)
K20H06C 2020 HC6 (arc=17 days, H=25.4 ~28m, NHATS target) from ARO Westfield (May 9.15p2)
K20H05N 2020 HN5 (arc=20 days, H=25.0 ~34m) from Steward Mt. Lemmon Sta. (May 13.47p4)
K20H03T 2020 HT3 (arc=20 days, H=25.3 ~29m, NHATS target) from Pomona College Table Mtn. Obs. (PCTMO) (May 11.34p1 & 11.39-42p2)
K20D03E 2020 DE3 (arc=34 days, H=23.9 ~56m) from SATINO-1 (March 3.09-10p3)
K14J25O 2014 JO25 (q=0.234 AU, arc=5 opp, H=17.8 ~933m, radar support) from ATLAS Haleakala (May 12.42-44p4)
i1987 441987 2010 NY65 (radar support) from PCTMO (2019 July 2.32p1, 2019 July 2.37p1, 2019 July 4.35p2, 2019 July 6.29-39p4, 2019 July 8.34-37p2, 2019 July 10.26p1, 2019 July 10.32-36p2, 2019 July 11.25p1, 2019 July 11.30p1, 2019 July 11.34-38p2, 2019 July 12.26p1 & 2019 July 12.31p1)
c8945 388945 2008 TZ3 from Ondrejov Obs. (April 25.83p1, 25.91p1, 25.96-99p2, 26.07p1, 26.97p1, 27.04p1, 27.83p1, 27.89p1, 27.95-99p2, 28.09p1, 29.85p1, 29.93p1, 30.02p1 & 30.08p1)
Observation campaigns (NHATS targets, radar support)
K20H06T 2020 HT6 (arc=21 days, H=24.7 ~39m, NHATS) from CSS-Kuiper (May 13.45-46p4)
K20H05G 2020 HG5 (arc=21 days, H=25.7 ~25m, NHATS) from Steward Mt. Lemmon Sta. (May 13.37-38p4)
K20H01S 2020 HS1 (arc=26 days, H=25.8 ~23m, NHATS) from Steward Mt. Lemmon Sta. (May 13.43p2)
K01Q34C 2001 QC34 (arc=4 opp, H=20.1 ~323m, NHATS) from ATLAS Haleakala (May 12.41-43p4)
-- NHATS target table -- Planetary radar schedules: Arecibo & Goldstone
Observations of small (H>22.0) & smallish (21.7<H<=22.0) asteroids
K20J00T 2020 JT (arc=12 days, H=22.3 ~117m) from PCTMO (May 11.35p1 & 11.40-44p2) and Steward Mt. Lemmon Sta. (May 13.42p4)
K20H09X 2020 HX9 (arc=15 days, H=23.2 ~78m) from PS1 (May 12.35-39p3) and Steward Mt. Lemmon Sta. (May 13.30-31p3)
K20H09O 2020 HO9 (arc=17 days, H=23.5 ~68m) from CSS-Kuiper (May 13.36-37p4)
K20H09G 2020 HG9 (arc=14 days, H=23.3 ~74m) from Zadko Obs. (May 11.53p2) and Dettelbach Vineyard Obs. (May 12.96-97p3)
K20H09E 2020 HE9 (arc=16 days, H=23.8 ~59m) from Steward Mt. Lemmon Sta. (May 13.29p4)
K20H09A 2020 HA9 (arc=16 days, H=25.1 ~32m) from Steward Mt. Lemmon Sta. (May 13.23-24p3)
K20H07P 2020 HP7 (arc=17 days, H=24.0 ~54m) from CSS-Kuiper (May 13.42-43p4)
K20H07D 2020 HD7 (arc=21 days, H=25.5 ~27m) from PS1 (May 12.34-38p4)
K20H06S 2020 HS6 (Q=4.054 AU, arc=19 days, H=22.2 ~123m) from ARO Westfield (May 9.17-18p4), QOS Obs. (May 12.88p4), and Steward Mt. Lemmon Sta. (May 13.23p4)
K20H04W 2020 HW4 (arc=52 days, H=23.1 ~81m) from Steward Mt. Lemmon Sta. (May 13.32-33p4)
K20H04R 2020 HR4 (arc=22 days, H=23.0 ~85m) from PS1 (May 12.35-37p3)
K20H04L 2020 HL4 (arc=23 days, H=24.6 ~41m) from CSS-Kuiper (May 13.28-29p3)
K20H04E 2020 HE4 (arc=27 days, H=23.7 ~62m) from CSS-Kuiper (May 13.35-36p3)
K20H03R 2020 HR3 (arc=22 days, H=24.0 ~54m) from CSS-Kuiper (May 13.18-19p3)
K20H03P 2020 HP3 (arc=24 days, H=22.2 ~123m) from CSS-Kuiper (May 13.30-32p4 at G=22.5)
K20H03J 2020 HJ3 (arc=24 days, H=22.6 ~102m) from CSS-Kuiper (May 13.32-33p2)
K20H03H 2020 HH3 (arc=24 days, H=23.7 ~62m) from Steward Mt. Lemmon Sta. (May 13.40-41p2)
K20H02T 2020 HT2 (arc=53 days, H=22.3 ~117m) from Dettelbach Vineyard Obs. (May 12.94-95p3)
K20H02F 2020 HF2 (arc=24 days, H=23.8 ~59m) from Pan-STARRS 2 (PS2) (May 12.37-41p4)
K20H02D 2020 HD2 (arc=26 days, H=23.0 ~85m) from Steward Mt. Lemmon Sta. (May 13.34-35p4)
K20H02C 2020 HC2 (arc=26 days, H=22.1 ~129m) from CSS-Kuiper (May 13.25p2 at G=21.4-22.5)
K20H01V 2020 HV1 (arc=24 days, H=22.5 ~107m) from MLS (May 12.26-27p8)
K20G03C 2020 GC3 (arc=28 days, H=23.6 ~65m) from CSS-Kuiper (May 13.38-39p3)
K20F07A 2020 FA7 (arc=57 days, H=22.3 ~117m) from MLS (May 12.46-47p3)
K20A01G 2020 AG1 (arc=145 days, H=23.5 ~68m) from CSS-Kuiper (May 13.40-41p3)
K02X40Q 2002 XQ40 (arc=5 opp, H=22.3 ~117m) from ATLAS Haleakala (May 12.43-45p4)
K20J00H 2020 JH (arc=9 days, H=21.9 ~141m) from PCTMO (May 11.32p1 & 11.37-40p2)
K20H09T 2020 HT9 (arc=19 days, H=21.8 ~148m) from PS1 (May 12.28-32p4)
K20H06H 2020 HH6 (arc=31 days, H=21.8 ~148m) from Steward Mt. Lemmon Sta. (May 13.42-45p4)
K00K00A 2000 KA (arc=4 opp, H=21.8 ~148m) from Kiso Obs. (May 12.50p2) and QOS Obs. (May 12.85-86p5)
Observations of other objects
K20J00V 2020 JV (arc=2 days, H=21.5 ~170m) from SpringBok Obs. (May 12.88-89p3)
K20J00D 2020 JD (arc=12 days, H=20.0 ~339m) from ATLAS Mauna Loa (May 12.36-40p4), Dettelbach Vineyard Obs. (May 12.89-90p3), and Steward Mt. Lemmon Sta. (May 13.35-37p4)
K20H10J 2020 HJ10 (arc=14 days, H=21.2 ~195m) from CSS-Kuiper (May 13.41-42p3 at G=21.5-22.4)
K20H10B 2020 HB10 (Q=4.512 AU, arc=14 days, H=20.6 ~257m) from PCTMO (May 11.33p1 & 11.38-42p2) and PS2 (May 12.46-49p3)
K20H06D 2020 HD6 (arc=22 days, H=19.6 ~407m) from CSS-Kuiper (May 13.20-22p4 at G=22.0-22.6)
K20H05W 2020 HW5 (Q=4.114 AU, arc=21 days, H=19.8 ~371m) from CSS-Kuiper (May 13.23-24p4)
K20H05S 2020 HS5 (arc=21 days, H=19.9 ~355m) from ARO Westfield (May 9.11-12p2 at V=22.1)
K20H02V 2020 HV2 (Q=4.892 AU, arc=25 days, H=18.9 ~562m) from MLS (May 12.30-31p4)
K20H01W 2020 HW1 (arc=27 days, H=19.3 ~467m) from MLS (May 12.34-35p4), PS1 (May 12.52-53p3), and Steward Mt. Lemmon Sta. (May 13.42p4)
K20H01F 2020 HF1 (arc=26 days, H=19.1 ~513m) from ATLAS Haleakala (May 12.35-38p4)
K20G03N 2020 GN3 (arc=53 days, H=19.1 ~513m) from Steward Mt. Lemmon Sta. (May 13.31-32p3)
K20G03F 2020 GF3 (arc=39 days, H=19.8 ~371m) from ARO Westfield (May 9.13p3), ATLAS Haleakala (May 12.37-39p3), and Dettelbach Vineyard Obs. (May 12.91-93p3)
K20G02U 2020 GU2 (arc=29 days, H=21.2 ~195m) from PS1 (May 12.28-32p3 at w=21.9-22.1)
K20G02Q 2020 GQ2 (arc=32 days, H=18.3 ~741m) from Steward Mt. Lemmon Sta. (May 13.24-27p4)
K20F06R 2020 FR6 (arc=50 days, H=21.4 ~178m) from CSS-Kuiper (May 13.31-32p3 at G=21.6-22.3)
K20F02J 2020 FJ2 (arc=56 days, H=20.1 ~323m) from Steward Mt. Lemmon Sta. (May 13.19-20p3)
K20B13H 2020 BH13 (Q=4.130 AU, arc=108 days, H=19.9 ~355m) from CSS-Kuiper (May 13.15-17p4 at G=22.0-23.1)
K19X02B 2019 XB2 (arc=162 days, H=20.6 ~257m) from Steward Mt. Lemmon Sta. (May 13.22-23p2 at G=20.6-22.1)
K19U09O 2019 UO9 (arc=2 opp, H=19.7 ~389m) from Zadko Obs. (May 11.46p5) and ATLAS Haleakala (May 12.32-34p4)
K18G04X 2018 GX4 (arc=3 opp, H=19.2 ~490m) from PS2 (May 12.32-36p4)
K17K03A 2017 KA3 (arc=2 opp, H=21.0 ~214m) from PS1 (May 12.35-39p4)
K17B32E 2017 BE32 (arc=2 opp, H=19.4 ~446m) from Steward Mt. Lemmon Sta. (May 13.18p3)
K15TE5A 2015 TA145 (arc=3 opp, H=21.5 ~170m) from PS2 (May 12.34-36p3)
K15TE3X 2015 TX143 (arc=6 opp, H=19.8 ~371m) from ATLAS Mauna Loa (May 12.38-40p3)
K15FX2P 2015 FP332 (i=36.5°, Q=4.790 AU, arc=5 opp, H=17.3 ~1.17 km) from the Catalina Sky Survey (CSS) (May 12.36-38p2) and PS1 (May 12.51-53p4)
K15FB8T 2015 FT118 (arc=3 opp, H=20.6 ~257m) from PS2 (May 13.27-29p3)
K14H04O 2014 HO4 (arc=4 opp, H=19.3 ~467m) from CSS (May 12.28-29p3)
K10ED5C 2010 EC135 (arc=3 opp, H=20.2 ~309m) from ARO Westfield (May 9.18p3) and ATLAS Mauna Loa (May 12.39-42p4)
K09K08K 2009 KK8 (arc=3 opp, H=18.6 ~645m) from PS1 (May 13.30-34p4)
K06X02F 2006 XF2 (arc=2 opp, H=19.9 ~355m) from PS1 (May 12.28-32p3)
K04F29F 2004 FF29 (arc=6 opp, H=18.1 ~812m) from PS2 (May 12.37-40p4)
K03M02S 2003 MS2 (arc=3 opp, H=21.2 ~195m) from MLS (May 12.36-38p4) and PS1 (May 12.54-57p4)
J98H03N 1998 HN3 (Q=5.029 AU, arc=4 opp, H=18.2 ~776m) from PS1 (May 13.31-34p4)
n4999 494999 2010 JU39 from PCTMO (2019 June 24.37-39p3, 2019 June 25.32-35p3 & 2019 July 1.16-18p3)
j0293 450293 2004 LV3 from PCTMO (2019 July 2.39-40p4, 2019 July 4.36-43p3, 2019 July 6.33-37p2, 2019 July 6.44p1, 2019 July 8.35p1, 2019 July 8.43p1, 2019 July 8.47p1, 2019 July 9.39-46p3, 2019 July 10.33p1, 2019 July 10.37-41p2, 2019 July 11.32-36p2, 2019 July 11.44p1 & 2019 July 27.32-35p2)
h6030 436030 2009 JO2 from ATLAS Mauna Loa (May 12.51-56p4)
h3992 433992 2000 HD74 from QOS Obs. (May 12.94-95p14)
c8838 388838 2008 EZ5 from ARO Westfield (May 9.08p4)
X1471 331471 1984 QY1 from QOS Obs. (May 12.96p4)
T3054 293054 2006 WP127 from PCTMO (2019 July 28.32p1, 2019 July 28.37-41p2, 2019 July 29.32p1, 2019 July 29.38p1, 2019 July 30.33-37p2, 2019 July 30.41p1, 2019 Aug. 1.37-41p2, 2019 Aug. 2.30p1, 2019 Aug. 2.35p1, 2019 Aug. 4.30-41p4, 2019 Aug. 6.35-39p2, 2019 Aug. 9.33-37p2, 2019 Aug. 10.29p2, 2019 Aug. 11.29p1, 2019 Aug. 11.33p1, 2019 Aug. 16.26p1 & 2019 Aug. 16.31p1)
I4990 184990 2006 KE89 from ARO Westfield (May 9.32p2)
D7199 137199 1999 KX4 from MLS (May 12.30-31p4) and CSS (May 12.34-36p4)
D7064 137064 1998 WP5 from Ondrejov Obs. (April 25.86p1, 25.91-95p2 & 25.99p1)
86667 86667 2000 FO10 from Ondrejov Obs. (April 27.88p1, 27.92p1, 27.96p1, 28.01-07p3, 29.87-94p3, 30.02-08p3, May 10.84p1, 10.91p1, 10.98p1 & 11.04p1), JAXA Space Tracking & Communications Center (JAXA STCC) (May 12.47p3), and QOS Obs. (May 12.92p8)
85628 85628 1998 KV2 from Ondrejov Obs. (April 26.00p1, 26.05p1, 26.10p1, 26.83p1, 26.87p1, 26.92p1, 26.97p1, 27.03p1 & 27.08-10p2)
85184 85184 1991 JG1 from Ondrejov Obs. (May 10.87p1, 10.91-95p2 & 10.99-06p4), QOS Obs. (May 12.90p8), and SONEAR (May 13.16p2)
68350 68350 2001 MK3 from ARO Westfield (May 9.27p3) and the Zwicky Transient Facility (ZTF) (May 10.21p1, 11.40p1, 12.36p1 & 12.43p1)
06569 6569 Ondaatje (1993 MO) from ZTF (May 12.32p1 & 12.45p1)
01864 1864 Daedalus (1971 FA) from ZTF (May 9.19p1, 9.23p1, 12.17p1 & 12.23p1)

Observers on 13 May '20

A total of 22 observers appear in today's MPECs.

Code	Observer / observatory
`H21`	Astronomical Research Obs. Westfield in Illinois, 9 in MPEC 2020-J57 -- 2020 JR, 2020 HS6, 2020 HS5, 2020 HC6, 2020 GF3, 2010 EC135, 68350, 388838, 184990
`T05`	ATLAS Haleakala in Hawaii, 6 in MPEC 2020-J57 -- 2020 HF1, 2020 GF3, 2019 UO9, 2014 JO25, 2002 XQ40, 2001 QC34
`T08`	ATLAS Mauna Loa in Hawaii, 4 in MPEC 2020-J57 -- 2020 JD, 2015 TX143, 2010 EC135, 436030
`703`	Catalina Sky Survey (CSS) in Arizona, 3 in MPEC 2020-J57 -- 2015 FP332, 2014 HO4, 137199
`V06`	Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) in Arizona, 17 in MPEC 2020-J57 -- 2020 HW5, 2020 HT6, 2020 HR3, 2020 HP7, 2020 HP3, 2020 HO9, 2020 HM1, 2020 HL4, 2020 HJ3, 2020 HJ10, 2020 HE4, 2020 HD6, 2020 HC2, 2020 GC3, 2020 FR6, 2020 BH13, 2020 AG1
`K87`	Dettelbach Vineyard Obs. in Germany, 4 in MPEC 2020-J57 -- 2020 JD, 2020 HT2, 2020 HG9, 2020 GF3
`J95`	Great Shefford Obs. in England, 1 in MPEC 2020-J58 -- 2020 JX
`P93`	JAXA Space Tracking & Communications Center in Japan, 1 in MPEC 2020-J57 -- 86667
`381`	Kiso Obs. in Japan, 1 in MPEC 2020-J57 -- 2000 KA
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 7 in MPECs 2020-J57 & 2020-J58 -- 2020 JX, 2020 HW1, 2020 HV2, 2020 HV1, 2020 FA7, 2003 MS2, 137199
`557`	Ondrejov Obs. in the Czech Republic, 5 in MPEC 2020-J57 -- 86667, 85628, 85184, 388945, 137064
`F51`	Pan-STARRS 1 (PS1) in Hawaii, 13 in MPEC 2020-J57 -- 2020 HX9, 2020 HW1, 2020 HT9, 2020 HR4, 2020 HD7, 2020 GU2, 2017 KA3, 2015 FP332, 2014 UX34, 2009 KK8, 2006 XF2, 2003 MS2, 1998 HN3
`F52`	Pan-STARRS 2 (PS2) in Hawaii, 6 in MPEC 2020-J57 -- 2020 HF2, 2020 HB10, 2018 GX4, 2015 TA145, 2015 FT118, 2004 FF29
`654`	Pomona College Table Mtn. Obs. (PCTMO) in southern California, 8 in MPEC 2020-J57 -- 2020 JT, 2020 JH, 2020 HT3, 2020 HB10, 494999, 450293, 441987, 293054
`L18`	QOS Obs., 6 in MPEC 2020-J57 -- 2020 HS6, 2000 KA, 86667, 85184, 433992, 331471
`C95`	SATINO-1 in France, 1 in MPEC 2020-J57 -- 2020 DE3
`Y00`	SONEAR in Brazil, 1 in MPEC 2020-J57 -- 85184
`L80`	SpringBok Obs., 1 in MPEC 2020-J57 -- 2020 JV
`I52`	Steward Obs. Mt. Lemmon Station in Arizona, 21 in MPECs 2020-J57 & 2020-J58 -- 2020 JX, 2020 JT, 2020 JR, 2020 JD, 2020 HX9, 2020 HW4, 2020 HW1, 2020 HS6, 2020 HS1, 2020 HN5, 2020 HH6, 2020 HH3, 2020 HG5, 2020 HE9, 2020 HD2, 2020 HA9, 2020 GQ2, 2020 GN3, 2020 FJ2, 2019 XB2, 2017 BE32
`T12`	UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2020-J57 -- 2019 QE7
`D20`	Zadko Obs. in Western Australia, 2 in MPEC 2020-J57 -- 2020 HG9, 2019 UO9
`I41`	Zwicky Transient Facility (ZTF) in southern California, 3 in MPEC 2020-J57 -- 68350, 6569, 1864

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

Impact Risk Monitoring on 13 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

2019 QE7	JPL Sentry	1630	2097-2119	8	1.701648e-06	-6.92	-7.29	0	JPL: Computed at 06:34 today Pacific time based on 31 observations spanning 26.888 days (2019-Aug-31.57014 to 2019-Sep-27.457719). Diameter approximately 0.015 km. from weighted mean H=26.72.
2019 QE7	NEODyS	1630	2097-2116	11	2.4e-06	-6.75	-7.07	0	NEODyS: "Based on 31 optical observations (of which 0 are rejected as outliers) from 2019-08-31.571 to 2019-09-27.459."

2014 UX34	JPL Sentry	1630	2084-2084	1	4.119e-10	-7.82	-7.82	0	JPL: Computed at 06:33 today Pacific time based on 62 observations spanning 36.925 days (2014-Oct-23.33075 to 2014-Nov-29.25596). Diameter approximately 0.120 km. from weighted mean H=22.32.

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 13 May '20

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

2332	Grabbed MPEC 2020-J58 - 2020 JX - see above
1630	Noted that JPL Sentry has updated its 2014 UX34 risk assessment - see above Noted that JPL Sentry has updated its 2019 QE7 risk assessment - see above Noted that NEODyS has updated its 2019 QE7 risk assessment - see above Grabbed MPEC 2020-J57 - Daily Orbit Update - see above

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