2020-05-12 Tracking News

Contents on 12 May '20

IAU Minor Planet Center
- NEOCP Activity -- 41 listings
- New MPECs -- three MPECs
Observers -- 28 observers
Impact Risk Monitoring -- seven objects
Chronology

Asteroid/Comet Connection (A/CC) Resources:

Consolidated Risk Tables - the CRT page
Of 1135 risk-listed objects, 65 have had news in the last 31 days. Updated at 1631 UTC on 12 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 12 May '20

The MPC's NEO Confirmation Page has 41 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 41 objects listed. Of these, 23 were "one nighters." So far The Tracking News has counted a total of 46 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 12 May '20

Minor Planet Electronic Circulars

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

MPEC 2020-J54 time-stamped "12:06 UT" - Daily Orbit Update - see below
MPEC 2020-J55 time-stamped "14:38 UT" - 2020 JV - see below
MPEC 2020-J56 time-stamped "15:00 UT" - 2017 CR32

MPEC 2020-J56 - "15:00 UT" - 2017 CR32

K17C32R 2017 CR32 (small asteroid, H=22.2 ~123m) from UH/Tholen NEO Follow-Up 2.24m Telescope (2019 Sept. 24.51-52p3 at G=23.51-60 & 2019 Sept. 25.46-47p2 at G=23.42-44)

MPEC 2020-J55 - "14:38 UT" - 2020 JV

K20J00V 2020 JV (Earth MOID=0.3 LD, H=21.5 ~170m) was picked up at 1020 UT on 10 May by ATLAS Mauna Loa, observing it at May 10.43-45p4. This detection was confirmed by program code "#" (12) via Slooh.com Chile Obs. (May 11.27-30p2), Hidetaka Sato via iTelescope Obs. Siding Spring (May 11.35-36p3), SpringBok Obs. (May 11.90-91p5), and Arcadia Obs. (May 12.51-53p3).

<< DOU on 12 May '20 >> MPEC 2020-J54 - "12:06 UT" - Daily Orbit Update

Observations of risk-listed objects
K20H04Q 2020 HQ4 (small asteroid, arc=20 days, H=26.9 ~14m, close passer, NHATS target) from Steward Obs. Mt. Lemmon Station (May 12.27-28p4)
K20B06M 2020 BM6 (small asteroid, Q=4.050 AU, arc=28 days, H=23.4 ~71m) from Astronomical Research Obs. Westfield (Feb. 15.21-23p3 at V=21.9-22.3)
K19P01O 2019 PO1 (small asteroid, arc=47 days, H=27.8 ~9m, close passer, NHATS target) from Tholen 2.24m (2019 Sept. 24.26-30p6 at G=23.14-71)
K18P29P 2018 PP29 (Q=5.559 AU, arc=27 days, H=21.6 ~162m) from program code "&" (15) via DECam (2018 Sept. 9.38p2)
K11V09G 2011 VG9 (small asteroid, Q=4.038 AU, arc=17 days, H=22.1 ~129m) from Pan-STARRS 1 (PS1) (2011 Nov. 22.29-30p2 & 2011 Dec. 2.28-29p2)
K11B59T 2011 BT59 from PS1 (2011 Jan. 31.51-52p2)
Observations of recently (no longer) risk-listed objects
K20J00P 2020 JP (Q=5.774 AU, arc=7 days, H=21.0 ~214m) from Clixby Obs. (May 12.01-02p5)
Observations of close-passing objects
K20J00R 2020 JR (arc=6 days, H=25.0 ~34m, NHATS target) from ARO Westfield (May 9.25p4), Purple Mtn. Obs. Xuyi Station (May 11.70-71p2), Paus Obs. (May 11.93p2), and Steward Mt. Lemmon Sta. (May 12.43p4)
K20J00G 2020 JG (arc=9 days, H=25.8 ~23m) from Pan-STARRS 2 (PS2) (May 11.28-31p4)
K20H06C 2020 HC6 (arc=17 days, H=25.4 ~28m, NHATS target) from ARO Westfield (May 9.14-15p4)
K20H06B 2020 HB6 (arc=15 days, H=24.2 ~49m, NHATS target) from ARO Westfield (May 9.22-23p4)
K20D03E 2020 DE3 (arc=34 days, H=23.9 ~56m) from ARO Westfield (March 29.39p2 at V=22.2-5)
K19X02N 2019 XN2 (arc=2 days, H=25.7 ~25m) from ARO Westfield (2019 Dec. 8.17-19p5)
K19X00Y 2019 XY (arc=4 days, H=27.9 ~9m) from ARO Westfield (2019 Dec. 7.28-29p4)
K14J25O 2014 JO25 (q=0.234 AU, arc=5 opp, H=17.8 ~933m, radar support) from PS2 (May 11.33-36p4)
Observation campaigns (NHATS targets, radar support)
K20J00M 2020 JM (arc=9 days, H=26.1 ~20m, NHATS) from Steward Mt. Lemmon Sta. (May 12.28-29p4)
K20C01J 2020 CJ1 (arc=90 days, H=23.8 ~59m, NHATS) from ARO Westfield (March 29.36-37p2 at V=22.1-2)
K12E08M 2012 EM8 (arc=2 opp, H=24.7 ~39m, NHATS) from Xuyi Sta. (May 10.74-76p3)
-- NHATS target table -- Planetary radar schedules: Arecibo & Goldstone
Observations of small (H>22.0) & smallish (21.7<H<=22.0) asteroids
K20J00B 2020 JB (arc=11 days, H=23.4 ~71m) from Steward Mt. Lemmon Sta. (May 12.39p4)
K20H10C 2020 HC10 (arc=13 days, H=22.2 ~123m) from Steward Mt. Lemmon Sta. (May 12.43-45p4)
K20H09G 2020 HG9 (arc=14 days, H=23.3 ~74m) from Xuyi Sta. (May 10.64-65p4), Woogaroo Obs. (May 11.49-51p3), and Foxfire Village Obs. (May 12.10-11p3)
K20H09B 2020 HB9 (arc=14 days, H=24.4 ~45m) from Steward Mt. Lemmon Sta. (May 12.25-26p4)
K20H08A 2020 HA8 (arc=16 days, H=22.2 ~123m) from Steward Mt. Lemmon Sta. (May 12.21-22p4 at G=20.9-22.6)
K20H07L 2020 HL7 (arc=16 days, H=22.9 ~89m) from PS2 (May 11.37-39p3)
K20H07D 2020 HD7 (arc=20 days, H=25.6 ~26m) from PS1 (May 11.33-35p3)
K20H06S 2020 HS6 (Q=4.052 AU, arc=18 days, H=22.2 ~123m) from ARO Westfield (May 9.16-17p3), Woogaroo Obs. (May 11.44-46p3), Dettelbach Vineyard Obs. (May 11.90p3), Clixby Obs. (May 11.91-92p7), program code "(" (17) via Slooh.com Chile Obs. (May 12.04-05p2), and Steward Mt. Lemmon Sta. (May 12.22-23p4)
K20H06N 2020 HN6 (arc=18 days, H=22.7 ~98m) from PS2 (May 12.29-32p4)
K20H06G 2020 HG6 (arc=48 days, H=23.0 ~85m) from PS2 (May 11.34-36p3)
K20H04R 2020 HR4 (arc=21 days, H=23.1 ~81m) from PS1 (May 11.32-35p4 at w=21.8-22.1)
K20H04D 2020 HD4 (arc=27 days, H=24.8 ~37m) from PS1 (May 11.32-34p2) and Steward Mt. Lemmon Sta. (May 12.41-42p4)
K20H03L 2020 HL3 (arc=22 days, H=24.1 ~51m) from Steward Mt. Lemmon Sta. (May 12.29-30p4)
K20H03F 2020 HF3 (arc=23 days, H=24.4 ~45m) from PS2 (May 12.33-35p3)
K20H02T 2020 HT2 (arc=52 days, H=22.3 ~117m) from ARO Westfield (May 9.15-16p4), Paus Obs. (May 11.85-86p2), and Foxfire Village Obs. (May 12.07-08p3)
K20H02Q 2020 HQ2 (arc=24 days, H=22.4 ~112m) from Steward Mt. Lemmon Sta. (May 12.30-32p3)
K20H02H 2020 HH2 (arc=24 days, H=23.0 ~85m) from Steward Mt. Lemmon Sta. (May 12.40-41p4)
K20H01V 2020 HV1 (arc=23 days, H=22.5 ~107m) from PS1 (May 11.39-41p3)
K20F03A 2020 FA3 (arc=49 days, H=23.3 ~74m) from Xuyi Sta. (May 10.67-68p2)
K19W06M 2019 WM6 (arc=33 days, H=23.2 ~78m) from ARO Westfield (Jan. 2.03-04p3 at V=22.3-5)
K20J00H 2020 JH (arc=9 days, H=21.9 ~141m) from ARO Westfield (May 9.21p4)
K19X01N 2019 XN1 (arc=4 opp, H=21.9 ~141m) from PS1 (May 11.27-30p4 at w=21.7-22.1)
K00K00A 2000 KA (arc=4 opp, H=21.8 ~148m) from the Zwicky Transient Facility (ZTF) (May 11.47p6), Gravina Obs. (May 11.85-86p4), program code 1 via Kuban State Univ. Obs. (May 11.87p3 & 11.93p1), Northolt Branch Obs. (May 11.92-93p5), Clixby Obs. (May 11.95p7), and Great Shefford Obs. (May 12.10p4)
Observations of other objects
K20J00D 2020 JD (arc=11 days, H=20.0 ~339m) from ARO Westfield (May 9.14p4) and Dettelbach Vineyard Obs. (May 11.86-87p3)
K20H09W 2020 HW9 (q=0.329 AU, arc=14 days, H=19.2 ~490m) from Steward Mt. Lemmon Sta. (May 12.31-32p4)
K20H08S 2020 HS8 (arc=16 days, H=21.1 ~204m) from Steward Mt. Lemmon Sta. (May 12.37-39p4)
K20H07K 2020 HK7 (q=0.339 AU, arc=39 days, H=21.7 ~155m) from PS2 (May 11.28-32p4)
K20H02V 2020 HV2 (Q=4.894 AU, arc=25 days, H=18.9 ~562m) from Steward Mt. Lemmon Sta. (May 12.35p3)
K20H02B 2020 HB2 (arc=26 days, H=20.3 ~295m) from Xuyi Sta. (May 11.60-61p2) and Steward Mt. Lemmon Sta. (May 12.34p4)
K20G03F 2020 GF3 (arc=38 days, H=19.8 ~371m) from ARO Westfield (May 9.13-14p3) and Dettelbach Vineyard Obs. (May 11.88-89p3)
K20F06B 2020 FB6 (arc=48 days, H=20.9 ~224m) from ARO Westfield (May 9.32p4) and Clixby Obs. (May 11.96-97p7)
K20F03W 2020 FW3 (arc=51 days, H=21.2 ~195m) from Xuyi Sta. (May 10.67-69p3) and Paus Obs. (May 11.89-90p2)
K20D02P 2020 DP2 from ARO Westfield (March 25.18-20p3 at V=22.1-3)
K20D02G 2020 DG2 (arc=96 days, H=19.7 ~389m) from SATINO-1 (Feb. 23.87-89p2)
K19Y04K 2019 YK4 (arc=48 days, H=20.3 ~295m) from ARO Westfield (Jan. 9.18-19p6)
K19X01G 2019 XG1 (Q=4.163 AU, arc=2 opp, H=19.2 ~490m) from Xuyi Sta. (May 10.55-56p2)
K17M00E 2017 ME (i=41.4°, arc=3 opp, H=17.9 ~891m) from Clixby Obs. (May 11.98-99p4)
K17K04T 2017 KT4 (i=46.8°, arc=4 opp, H=17.2 ~1.23 km) from ZTF (May 10.47-48p4)
K17G06U 2017 GU6 (arc=3 opp, H=20.5 ~269m) from ARO Westfield (March 1.32-33p3 at V=22.0-22.2)
K17B32E 2017 BE32 (arc=2 opp, H=19.4 ~446m) from Steward Mt. Lemmon Sta. (May 12.16-17p4)
K16AE7X 2016 AX147 (arc=4 opp, H=17.8 ~933m) from ATLAS Mauna Loa (May 11.24-26p4)
K15H10B 2015 HB10 (arc=4 opp, H=18.2 ~776m) from PS2 (May 11.35-37p3)
K15FX2P 2015 FP332 (i=36.5°, Q=4.790 AU, arc=5 opp, H=17.3 ~1.17 km) from ARO Westfield (Jan. 2.45p2 at V=22.0-22.2)
K14N64F 2014 NF64 (Q=4.904 AU, arc=5 opp, H=18.2 ~776m) from ARO Westfield (Jan. 9.12p4)
K14H04O 2014 HO4 (arc=4 opp, H=19.3 ~467m) from ZTF (May 11.23-26p4)
K13D01L 2013 DL1 (q=0.235 AU, arc=4 opp, H=21.1 ~204m) from ARO Westfield (March 18.08-11p3 at V=22.1-3)
K10U07H 2010 UH7 (Q=4.173 AU, arc=3 opp, H=19.1 ~513m) from ARO Westfield (2019 Dec. 7.04-07p6)
K10G25F 2010 GF25 (i=38.5°, q=0.374 AU, arc=4 opp, H=19.1 ~513m) from ARO Westfield (March 18.07p2 at V=22.0-22.4)
K10ED5C 2010 EC135 (arc=3 opp, H=20.2 ~309m) from ARO Westfield (May 9.19p3), Clixby Obs. (May 11.93-94p5), and Squirrel Valley Obs. (May 12.06-07p4)
K09K08K 2009 KK8 (arc=3 opp, H=18.6 ~645m) from Xuyi Sta. (May 11.55-58p3)
K07O00Y 2007 OY (arc=2 opp, H=20.9 ~224m) from Sandlot Obs. (May 11.22-25p5) and PS1 (May 11.32-35p4)
K07H82X 2007 HX82 (Q=4.101 AU, arc=3 opp, H=20.4 ~282m) from Xuyi Sta. (May 11.64-67p2)
K04F29F 2004 FF29 (arc=6 opp, H=18.1 ~812m) from Xuyi Sta. (May 10.63-65p3)
K00WA7M 2000 WM107 (Q=4.085 AU, arc=5 opp, H=18.8 ~589m) from PS2 (April 1.61p1 at G=22.8, 20.55p1 at G=22.3 & 26.47p1 at G=21.9) and PS1 (May 11.32-35p3 at w=22.07-38)
q4530 524530 2002 XC91 from PS2 (May 11.38-41p3)
q2684 522684 2016 JP from Xuyi Sta. (May 11.72-75p3)
p3125 513125 1997 GC32 from Xuyi Sta. (May 10.55-57p3)
n8066 498066 2007 RM133 from Northolt Branch Obs. (May 11.97-99p3)
n4706 494706 2005 GL9 from Xuyi Sta. (May 10.63-66p3)
m3878 483878 2005 YS165 from ZTF (May 11.23-27p3 & 11.33p1)
k8910 468910 2014 KQ76 from Xuyi Sta. (May 10.67-69p3)
h6030 436030 2009 JO2 from ARO Westfield (May 9.28p4)
h3992 433992 2000 HD74 from Xuyi Sta. (May 11.69-71p3)
c8838 388838 2008 EZ5 from ARO Westfield (May 9.07-08p3)
X3555 333555 2005 VY17 from ARO Westfield (May 9.15-16p4)
L4088 214088 2004 JN13 from ARO Westfield (Jan. 9.21-23p5)
J2563 192563 1998 WZ6 from WISE (May 9.99p1, 10.12p1, 10.25p1, 10.31p1, 10.71p1, 10.84p1 & 10.97p1)
G3243 163243 2002 FB3 from Xuyi Sta. (May 11.52-53p2)
G2210 162210 1999 SM5 from Sato/iTelObs-SSO (May 10.35-36p2) and Xuyi Sta. (May 11.51-54p3)
F9928 159928 2005 CV69 from Xuyi Sta. (May 11.80-81p2)
F9608 159608 2002 AC2 from Xuyi Sta. (May 11.77-78p2)
F2978 152978 2000 GJ147 from ZTF (May 11.18p2 & 11.24p2)
D7199 137199 1999 KX4 from ARO Westfield (May 9.17-18p4) and ATLAS Haleakala (May 11.44-49p5)
D7170 137170 1999 HF1 from Xuyi Sta. (May 11.80-83p3)
D6923 136923 1998 JH2 from Xuyi Sta. (May 10.59-62p3)
D6874 136874 1998 FH74 from Xuyi Sta. (May 10.71-73p3)
D6618 136618 1994 CN2 from Xuyi Sta. (May 10.54-57p3)
A6589 106589 2000 WN107 from ARO Westfield (Jan. 9.08-09p9)
90075 90075 2002 VU94 from Xuyi Sta. (May 11.51-53p3)
86667 86667 2000 FO10 from PS2 (May 12.28-31p4)
68350 68350 2001 MK3 from ZTF (May 8.27-30p2, 8.43p1, 10.32p1, 10.38p1, 10.43p1, 11.22p1, 11.28p2 & 11.45p1) and ARO Westfield (May 9.26p3)
68278 68278 2001 FC7 from Xuyi Sta. (May 11.55-58p3)
52768 52768 1998 OR2 from Tarzana Obs. (April 26.26-27p2, 28.15p1 & 28.21p1)
40267 40267 1999 GJ4 from Xuyi Sta. (May 10.50-53p3)
35107 35107 1991 VH from ARO Westfield (May 9.08p3)
34613 34613 2000 UR13 from Xuyi Sta. (May 10.51-53p2)
20255 20255 1998 FX2 from Xuyi Sta. (May 10.51-54p3)
09400 9400 1994 TW1 from ZTF (May 8.20-21p2, 9.18p1 & 9.23p1)
07753 7753 1988 XB from Xuyi Sta. (May 11.55-59p3)
06569 6569 Ondaatje (1993 MO) from ZTF (May 9.42p1, 9.49p1, 10.35p1, 10.43p1, 11.43-44p2 & 11.48p2)
01917 1917 Cuyo (1968 AA) from Xuyi Sta. (May 11.64-66p2)
01627 1627 Ivar (1929 SH) from Xuyi Sta. (May 10.51-53p3)

Observers on 12 May '20

A total of 28 observers appear in today's MPECs.

Code	Observer / observatory
`E23`	Arcadia Obs. in New South Wales, 1 in MPEC 2020-J55 -- 2020 JV
`H21`	Astronomical Research Obs. Westfield in Illinois, 32 in MPEC 2020-J54 -- 2020 JR, 2020 JH, 2020 JD, 2020 HT2, 2020 HS6, 2020 HC6, 2020 HB6, 2020 GF3, 2020 FB6, 2020 DP2, 2020 DE3, 2020 CJ1, 2020 BM6, 2019 YK4, 2019 XY, 2019 XN2, 2019 WM6, 2017 GU6, 2015 FP332, 2014 NF64, 2013 DL1, 2010 UH7, 2010 GF25, 2010 EC135, 68350, 436030, 388838, 35107, 333555, 214088, 137199, 106589
`T05`	ATLAS Haleakala in Hawaii, 1 in MPEC 2020-J54 -- 137199
`T08`	ATLAS Mauna Loa in Hawaii, 2 in MPECs 2020-J54 & 2020-J55 -- 2020 JV, 2016 AX147
`Z99`	Clixby Obs. in England, 6 in MPEC 2020-J54 -- 2020 JP, 2020 HS6, 2020 FB6, 2017 ME, 2010 EC135, 2000 KA
`W84&`	program code "&" (15) via DECam in Chile, 1 in MPEC 2020-J54 -- 2018 PP29
`K87`	Dettelbach Vineyard Obs. in Germany, 3 in MPEC 2020-J54 -- 2020 JD, 2020 HS6, 2020 GF3
`W46`	Foxfire Village Obs., 2 in MPEC 2020-J54 -- 2020 HT2, 2020 HG9
`K73`	Gravina Obs. in Italy, 1 in MPEC 2020-J54 -- 2000 KA
`J95`	Great Shefford Obs. in England, 1 in MPEC 2020-J54 -- 2000 KA
`Q621`	Hidetaka Sato in Japan via iTelescope Obs. Siding Spring in New South Wales, 2 in MPECs 2020-J54 & 2020-J55 -- 2020 JV, 162210
`C401`	program code 1 via Kuban State Univ. Obs. in Russia, 1 in MPEC 2020-J54 -- 2000 KA
`Z80`	Northolt Branch Obs. in England, 2 in MPEC 2020-J54 -- 2000 KA, 498066
`F51`	Pan-STARRS 1 (PS1) in Hawaii, 9 in MPEC 2020-J54 -- 2020 HV1, 2020 HR4, 2020 HD7, 2020 HD4, 2019 XN1, 2011 VG9, 2011 BT59, 2007 OY, 2000 WM107
`F52`	Pan-STARRS 2 (PS2) in Hawaii, 11 in MPEC 2020-J54 -- 2020 JG, 2020 HN6, 2020 HL7, 2020 HK7, 2020 HG6, 2020 HF3, 2015 HB10, 2014 JO25, 2000 WM107, 86667, 524530
`B49`	Paus Obs. in Spain, 3 in MPEC 2020-J54 -- 2020 JR, 2020 HT2, 2020 FW3
`D29`	Purple Mtn. Obs. Xuyi Station in China, 31 in MPEC 2020-J54 -- 2020 JR, 2020 HG9, 2020 HB2, 2020 FW3, 2020 FA3, 2019 XG1, 2012 EM8, 2009 KK8, 2007 HX82, 2004 FF29, 90075, 68278, 522684, 513125, 494706, 468910, 433992, 40267, 34613, 20255, 163243, 162210, 159928, 159608, 137170, 136923, 136874, 136618, 7753, 1917, 1627
`H36`	Sandlot Obs. in Kansas, 1 in MPEC 2020-J54 -- 2007 OY
`C95`	SATINO-1 in France, 1 in MPEC 2020-J54 -- 2020 DG2
`W88#`	program code "#" (12) via Slooh.com Chile Obs. in Chile, 1 in MPEC 2020-J55 -- 2020 JV
`W88(`	program code "(" (17) via Slooh.com Chile Obs. in Chile, 1 in MPEC 2020-J54 -- 2020 HS6
`L80`	SpringBok Obs., 1 in MPEC 2020-J55 -- 2020 JV
`W34`	Squirrel Valley Obs. in North Carolina, 1 in MPEC 2020-J54 -- 2010 EC135
`I52`	Steward Obs. Mt. Lemmon Station in Arizona, 17 in MPEC 2020-J54 -- 2020 JR, 2020 JM, 2020 JB, 2020 HW9, 2020 HV2, 2020 HS8, 2020 HS6, 2020 HQ4, 2020 HQ2, 2020 HL3, 2020 HH2, 2020 HD4, 2020 HC10, 2020 HB9, 2020 HB2, 2020 HA8, 2017 BE32
`U72`	Tarzana Obs., 1 in MPEC 2020-J54 -- 52768
`T12`	UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 2 in MPECs 2020-J54 & 2020-J56 -- 2019 PO1, 2017 CR32
`C51`	WISE in Earth polar orbit, 1 in MPEC 2020-J54 -- 192563
`Q78`	Woogaroo Obs., 2 in MPEC 2020-J54 -- 2020 HS6, 2020 HG9
`I41`	Zwicky Transient Facility (ZTF) in southern California, 8 in MPEC 2020-J54 -- 2017 KT4, 2014 HO4, 2000 KA, 68350, 483878, 152978, 9400, 6569

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

Impact Risk Monitoring on 12 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 JU	NEODyS	1630	2033-2117	41	9.56e-08	-6.13	-6.68	0	NEODyS: "Based on 14 optical observations (of which 0 are rejected as outliers) from 2020-05-06.200 to 2020-05-08.227."

2020 HQ4	JPL Sentry	1630	2059-2120	52	0.0001315838	-5.07	-5.56	0	JPL: Computed at 07:21 today Pacific time based on 100 observations spanning 20.128 days (2020-Apr-22.14953 to 2020-May-12.27798). Diameter approximately 0.014 km. from weighted mean H=26.88.
2020 HQ4	NEODyS	1630	2051-2118	138	9.48e-05	-5.25	-6.07	0	NEODyS: "Based on 103 optical observations (of which 1 are rejected as outliers) from 2020-04-22.150 to 2020-05-12.279."

2020 BM6	JPL Sentry	1630	2119-2119	1	1.253e-08	-7.43	-7.43	0	JPL: Computed at 07:06 today Pacific time based on 31 observations spanning 27.682 days (2020-Jan-18.547232 to 2020-Feb-15.229558). Diameter approximately 0.072 km. from weighted mean H=23.36.

2019 PO1	JPL Sentry	1630	2084-2117	16	1.50064e-05	-6.69	-7.20	0	JPL: Computed at 07:13 today Pacific time based on 55 observations spanning 46.835 days (2019-Aug-09.53131 to 2019-Sep-25.365867). Diameter approximately 0.009 km. from weighted mean H=27.95.
2019 PO1	NEODyS	1630	2085-2118	26	6.05e-06	-7.12	-7.59	0	NEODyS: "Based on 55 optical observations (of which 1 are rejected as outliers) from 2019-08-09.532 to 2019-09-25.367."

2018 PP29	JPL Sentry	1630	R E M O V E D						JPL: Risk listing removed at 1400 UTC today
2018 PP29	NEODyS	1630	R E M O V E D						-

2011 VG9	JPL Sentry	1630	2104-2119	3	4.83098e-07	-4.83	-5.00	0	JPL: Computed at 07:04 today Pacific time based on 61 observations spanning 16.915 days (2011-Nov-15.37847 to 2011-Dec-02.2934). Diameter approximately 0.120 km. from weighted mean H=22.18.
2011 VG9	NEODyS	1630	2104-2117	3	4.18e-07	-4.93	-5.11	0	NEODyS: "Based on 61 optical observations (of which 0 are rejected as outliers) from 2011-11-15.379 to 2011-12-02.294."

2011 BT59	JPL Sentry	1630	2052-2119	3	8.6006e-09	-5.36	-5.39	0	JPL: Computed at 07:04 today Pacific time based on 12 observations spanning 7.9934 days (2011-Jan-30.536027 to 2011-Feb-07.529449). Diameter approximately 0.220 km. from weighted mean H=20.92.
2011 BT59	NEODyS	1630	2078	1	7.14e-09	-5.73	-5.73	0	NEODyS: "Based on 13 optical observations (of which 1 are rejected as outliers) from 2011-01-30.537 to 2011-02-07.530."

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 12 May '20

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

1630

Noted that JPL Sentry has updated its 2011 BT59 risk assessment - see above
Noted that NEODyS has updated its 2011 BT59 risk assessment - see above
Noted that JPL Sentry has updated its 2011 VG9 risk assessment - see above
Noted that NEODyS has updated its 2011 VG9 risk assessment - see above
Noted that JPL Sentry has removed 2018 PP29 as an impact risk - see above
Noted that NEODyS has removed 2018 PP29 as an impact risk - see above
Noted that JPL Sentry has updated its 2019 PO1 risk assessment - see above
Noted that NEODyS has updated its 2019 PO1 risk assessment - see above
Noted that JPL Sentry has posted 2020 BM6 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 NEODyS has posted 2020 JU as an impact risk - see above
Grabbed MPEC 2020-J54 - Daily Orbit Update - see above
Grabbed MPEC 2020-J55 - 2020 JV - see above
Grabbed MPEC 2020-J56 - 2017 CR32 - see above

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