2020-09-18 Tracking News

Contents on 18 September '20

IAU Minor Planet Center
- NEOCP Activity -- 132 listings
- New MPECs -- sixteen MPECs
Observers -- 47 observers
Impact Risk Monitoring -- twelve objects
Chronology

Asteroid/Comet Connection (A/CC) Resources:

Consolidated Risk Tables - the CRT page
Of 1161 risk-listed objects, 91 have had news in the last 31 days. Updated at 1702 UTC on 18 Sept.
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 18 September '20

The MPC's NEO Confirmation Page has 132 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 132 objects listed. Of these, 58 were "one nighters." So far The Tracking News has counted a total of 167 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 18 September '20

Minor Planet Electronic Circulars

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

MPEC 2020-S55 time-stamped "02:23 UT" - 2020 SB - see below
MPEC 2020-S56 time-stamped "03:03 UT" - 2020 PQ7 - see below
MPEC 2020-S57 time-stamped "03:05 UT" - 2020 SC - see below
MPEC 2020-S58 time-stamped "03:06 UT" - 2020 SD - see below
MPEC 2020-S59 time-stamped "03:11 UT" - 2020 RV8 - see below
MPEC 2020-S60 time-stamped "05:50 UT" - 2020 RX8 - see below
MPEC 2020-S61 time-stamped "06:13 UT" - 2020 SF - see below
MPEC 2020-S62 time-stamped "11:10 UT" - 2020 RE9 - see below
MPEC 2020-S63 time-stamped "11:12 UT" - 2020 SG - see below
MPEC 2020-S64 time-stamped "11:13 UT" - 2020 RF9 - see below
MPEC 2020-S65 time-stamped "11:15 UT" - 2020 RG9 - see below
MPEC 2020-S66 time-stamped "11:17 UT" - 2020 SH - see below
MPEC 2020-S67 time-stamped "12:07 UT" - Daily Orbit Update - see below
MPEC 2020-S68 time-stamped "18:30 UT" - 2019 GQ3 - see below
MPEC 2020-S69 time-stamped "19:34 UT" - 2020 RJ9 - see below
MPEC 2020-S70 time-stamped "20:44 UT" - 1999 EO3

MPEC 2020-S70 - "20:44 UT" - 1999 EO3

J99E03O 1999 EO3 (Q=4.304 AU, H=19.0 ~537m) from Pan-STARRS 1 (PS1) (Aug. 21.60-62p3 & 29.58p2) and Pan-STARRS 2 (PS2) (Sept. 18.55-59p4)

MPEC 2020-S69 - "19:34 UT" - 2020 RJ9

K20R09J 2020 RJ9 (small asteroid, H=23.2 ~78m) was picked up at 1052 UT on 13 Sept. by PS1, observing it at Sept. 13.45-49p4 at w=22.65-86, 14.37-41p4 at G=22.04-99, 14.52-55p4 at w=23.49-79, 15.34-38p3 at G=22.61-95, and 18.54-58p3 at w=23.12-79.

MPEC 2020-S68 - "18:30 UT" - 2019 GQ3

K19G03Q 2019 GQ3 (H=20.7 ~245m) from PS2 (Aug. 28.59-61p3), PS1 (Sept. 9.50-53p4 & 13.45-47p3), the Mt. Lemmon Survey (MLS) (Sept. 10.36-38p4), the Catalina Sky Survey (CSS) (Sept. 17.28-30p3), and ATLAS Haleakala (Sept. 18.47-55p4)

<< DOU on 18 September '20 >> MPEC 2020-S67 - "12:07 UT" - Daily Orbit Update

Observations of risk-listed objects
K20S00C 2020 SC (small asteroid, arc=1 day, H=26.7 ~15m, close passer) from Dettelbach Vineyard Obs. (Sept. 17.92-96p3)
K20R07H 2020 RH7 (i=44.3°, arc=3 days, H=20.2 ~309m) from UH/Tholen NEO Follow-Up 2.24m Telescope (Sept. 17.39p2) and PS2 (Sept. 17.42-46p3)
K20R07B 2020 RB7 (small asteroid, arc=2 days, H=27.3 ~12m, close passer) from Tholen 2.24m (Sept. 17.23p3) and Great Shefford Obs. (Sept. 17.87p4 & 18.01-02p4)
K20R06Z 2020 RZ6 (small asteroid, arc=3 days, H=26.8 ~15m, close passer) from Dettelbach Vineyard Obs. (Sept. 16.86p2), North Obs. (Sept. 16.91-92p7), Tholen 2.24m (Sept. 17.22p2), and Great Shefford Obs. (Sept. 17.82-83p4 & 18.10-11p5)
K20R02J 2020 RJ2 (small asteroid, arc=7 days, H=29.5 ~4m, close passer, NHATS target) from Tholen 2.24m (Sept. 17.40p2)
K20R00K 2020 RK (small asteroid, arc=12 days, H=25.3 ~29m, close passer) from Tholen 2.24m (Sept. 17.31p3)
Observations of recently (no longer) risk-listed objects
K20R05F 2020 RF5 (small asteroid, arc=6 days, H=23.9 ~56m, NHATS target) from Mt. John Obs. (Sept. 18.38p4)
K20R00B 2020 RB (i=59.2°, Q=5.512 AU, arc=15 days, H=19.1 ~513m) from Steward Obs. Mt. Lemmon Station (Sept. 18.15p4)
Observations of close-passing objects
K20R07W 2020 RW7 (arc=2 days, H=25.1 ~32m, NHATS target) from Visnjan Obs. (Sept. 17.08p3), Tony Evans via Slooh.com Chile Obs. (Sept. 17.19-22p3), ATLAS Haleakala (Sept. 17.48-49p3), M. Suzuki via iTelescope Obs. Siding Spring (Sept. 17.55-56p4), Hidetaka Sato via iTelescope Obs. Siding Spring (Sept. 17.56p2), and Cristovao Jacques via iTelescope Obs. Siding Spring (Sept. 17.72-73p11)
K20R07A 2020 RA7 (arc=3 days, H=27.0 ~13m, NHATS target) from Guidestar Obs. (Sept. 17.81-83p3), Clixby Obs. (Sept. 17.88-89p5), and Steward Mt. Lemmon Sta. (Sept. 18.16p4)
K20R06A 2020 RA6 from Great Shefford Obs. (Sept. 17.84-85p4 & 18.09p4)
K20R03Q 2020 RQ3 (arc=8 days, H=25.1 ~32m) from Clixby Obs. (Sept. 17.93p5) and Steward Mt. Lemmon Sta. (Sept. 18.14p4)
K20R01Y 2020 RY1 (arc=7 days, H=26.4 ~18m) from PS2 (Sept. 17.38-40p3)
K20P07M 2020 PM7 (Q=4.014 AU, arc=2 opp, H=22.3 ~117m) from ATLAS Haleakala (Sept. 17.38-40p4) and Dettelbach Vineyard Obs. (Sept. 17.82p3)
K20P00S 2020 PS (arc=38 days, H=24.6 ~41m) from PS2 (Sept. 17.53-56p3 at w=21.61-22.09)
K14Q33J 2014 QJ33 (arc=2 opp, H=23.7 ~62m, NHATS target) from Wickede Obs. (Sept. 15.88p5), QOS Obs. (Sept. 17.76p3), Castelmartini Obs. (Sept. 17.81p3), and Clixby Obs. (Sept. 17.86p5)
Observation campaigns (NHATS targets, radar support)
K20R08R 2020 RR8 (arc=3 days, H=26.4 ~18m, NHATS) from PS1 (Sept. 17.41-44p3)
K20R07U 2020 RU7 (arc=3 days, H=25.4 ~28m, NHATS) from PS2 (Sept. 17.35-38p3) and Steward Mt. Lemmon Sta. (Sept. 18.15-16p4)
K20R02V 2020 RV2 (arc=7 days, H=25.6 ~26m, NHATS) from ATLAS Mauna Loa (Sept. 17.53-54p5)
K20P01X 2020 PX1 (arc=39 days, H=23.7 ~62m, NHATS) from PS2 (Sept. 18.24-27p4)
K19R00Y 2019 RY (arc=2 opp, H=24.8 ~37m, NHATS) from MLS (Sept. 17.41-43p4)
K19N01C 2019 NC1 (arc=4 opp, H=21.4 ~178m, NHATS) from ATLAS Mauna Loa (Sept. 17.25-27p4)
K12H20D 2012 HD20 (arc=3 opp, H=22.3 ~117m, NHATS) from PS2 (Sept. 17.44-47p3)
-- NHATS target table
Observations of small (H>22.0) & smallish (21.7<H<=22.0) asteroids
K20R08Q 2020 RQ8 (arc=11 days, H=25.3 ~29m) from Astronomical Research Obs. Westfield (Sept. 17.34-35p3) and PS2 (Sept. 17.48-52p3)
K20R08B 2020 RB8 (arc=4 days, H=24.2 ~49m) from PS1 (Sept. 17.30-33p3) and the Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) (Sept. 18.15-16p4)
K20R07R 2020 RR7 (arc=3 days, H=24.2 ~49m) from Steward Mt. Lemmon Sta. (Sept. 18.18p4)
K20R07K 2020 RK7 (arc=3 days, H=24.0 ~54m) from PS2 (Sept. 17.44-47p3 at w=21.65-22.08)
K20R06X 2020 RX6 (arc=4 days, H=25.4 ~28m) from Steward Mt. Lemmon Sta. (Sept. 18.18p3)
K20R06H 2020 RH6 (arc=4 days, H=24.9 ~35m) from Clixby Obs. (Sept. 17.98p4) and Dettelbach Vineyard Obs. (Sept. 18.05-06p3)
K20R06G 2020 RG6 (arc=4 days, H=23.7 ~62m) from Steward Mt. Lemmon Sta. (Sept. 18.17p4)
K20R05D 2020 RD5 (arc=5 days, H=24.1 ~51m) from Clixby Obs. (Sept. 17.96p3), Guidestar Obs. (Sept. 17.98-99p3), and Dettelbach Vineyard Obs. (Sept. 18.06-08p3)
K20R04U 2020 RU4 (arc=6 days, H=23.4 ~71m) from CSS-Kuiper (Sept. 18.20-21p4)
K20R04P 2020 RP4 (arc=8 days, H=23.5 ~68m) from PS2 (Sept. 17.42-46p4)
K20R01Q 2020 RQ1 (Q=5.590 AU, arc=12 days, H=23.2 ~78m) from MLS (Sept. 17.29-31p4) and Dettelbach Vineyard Obs. (Sept. 17.98-99p3)
K20R00O 2020 RO (arc=29 days, H=23.3 ~74m) from ATLAS Haleakala (Sept. 17.39-42p4)
K20R00N 2020 RN (arc=12 days, H=22.1 ~129m) from PS1 (Sept. 17.30-33p3)
K20R00F 2020 RF (Q=4.227 AU, arc=20 days, H=22.3 ~117m) from program code 2 via ESA Test-Bed Telescope Cebreros (Sept. 8.85-89p4), Wickede Obs. (Sept. 15.94-96p5), and Dettelbach Vineyard Obs. (Sept. 17.09p3)
K20Q06V 2020 QV6 (q=0.318 AU, arc=20 days, H=22.4 ~112m) from PS1 (Sept. 17.30-33p3)
K20Q06G 2020 QG6 (arc=32 days, H=22.4 ~112m) from PS2 (Sept. 17.42-46p3)
K20Q05H 2020 QH5 (arc=37 days, H=23.4 ~71m) from PS2 (Sept. 17.39-41p3)
K20Q04Y 2020 QY4 (arc=29 days, H=23.5 ~68m) from PS1 (Sept. 17.42-46p4 at w=21.6-22.1)
K20Q04V 2020 QV4 (Q=4.138 AU, arc=38 days, H=25.3 ~29m) from MLS (Sept. 17.44-45p4)
K20O04A 2020 OA4 (arc=56 days, H=22.3 ~117m) from PS1 (Sept. 17.41-45p4)
K20O00R 2020 OR (arc=89 days, H=22.5 ~107m) from PS2 (Sept. 17.52-56p4)
K20M04F 2020 MF4 (arc=81 days, H=22.5 ~107m) from PS1 (Sept. 17.36-40p4 at w=21.9-22.5)
K20H11C 2020 HC11 (arc=153 days, H=22.4 ~112m) from PS1 (Sept. 17.53-59p6 at w=22.5-23.74)
K18R03V 2018 RV3 (arc=4 opp, H=23.0 ~85m) from Dettelbach Vineyard Obs. (Sept. 16.94-95p3 & 17.88-89p3)
K16J00N 2016 JN (arc=3 opp, H=23.4 ~71m) from MLS (Sept. 17.39-41p4 at G=21.4-22.1)
K12S32H 2012 SH32 (arc=2 opp, H=22.2 ~123m) from ATLAS Haleakala (Sept. 17.44-46p4)
K10Q05A 2010 QA5 (Q=4.765 AU, arc=2 opp, H=22.3 ~117m) from SATINO-1 (Sept. 16.02-04p4)
K20R00C 2020 RC (arc=15 days, H=22.0 ~135m) from MLS (Sept. 17.17-19p4) and Steward Mt. Lemmon Sta. (Sept. 18.15p4)
K20Q02H 2020 QH2 (arc=48 days, H=21.9 ~141m) from MLS (Sept. 17.41-43p4)
K13V04Q 2013 VQ4 (arc=3 opp, H=21.8 ~148m) from PS1 (Sept. 17.42-47p3 at w=22.3-4)
Observations of other objects
K20S00B 2020 SB (Q=0.988 AU, arc=2 days, H=20.3 ~295m) from McDonald Obs. (Sept. 18.09-10p3)
K20R06W 2020 RW6 from Guidestar Obs. (Sept. 18.00-02p3)
K20R01E 2020 RE1 (i=56.4°, arc=14 days, H=20.6 ~257m) from CSS (Sept. 17.28-30p4) and Dettelbach Vineyard Obs. (Sept. 17.97p3)
K20R00R 2020 RR (i=39.1°, arc=12 days, H=21.3 ~186m) from Dettelbach Vineyard Obs. (Sept. 17.84-85p3), Steward Mt. Lemmon Sta. (Sept. 18.17p3), and PS1 (Sept. 18.25-28p3)
K20R00E 2020 RE (arc=23 days, H=20.3 ~295m) from Muensterschwarzach Obs. (Sept. 15.83-84p4), ATLAS Mauna Loa (Sept. 17.34-38p4), Dettelbach Vineyard Obs. (Sept. 17.82-84p3), and Castelmartini Obs. (Sept. 17.87-88p3)
K20Q06U 2020 QU6 (arc=21 days, H=18.3 ~741m) from ATLAS Haleakala (Sept. 17.35-37p4)
K20Q06Q 2020 QQ6 (Q=4.107 AU, arc=35 days, H=19.8 ~371m) from PS2 (Sept. 17.38-41p4)
K20Q06K 2020 QK6 (arc=22 days, H=20.8 ~234m) from PS2 (Sept. 17.59-62p3)
K20Q04M 2020 QM4 (arc=29 days, H=18.6 ~645m) from Dettelbach Vineyard Obs. (Sept. 17.13-14p2), CSS (Sept. 17.48-49p4), and ATLAS Mauna Loa (Sept. 17.50-54p4)
K20P05C 2020 PC5 (Q=4.178 AU, arc=35 days, H=18.5 ~676m) from CSS (Sept. 17.28-29p3), PS1 (Sept. 17.53-59p4), and Dettelbach Vineyard Obs. (Sept. 17.99-01p3)
K20P01D 2020 PD1 (Q=4.136 AU, arc=87 days, H=19.3 ~467m) from PS1 (Sept. 17.37-41p4), ATLAS Mauna Loa (Sept. 17.44-46p4), and Guidestar Obs. (Sept. 17.88-91p3)
K20O07K 2020 OK7 (arc=49 days, H=21.7 ~155m) from Steward Mt. Lemmon Sta. (Sept. 17.44-49p4)
K20O06W 2020 OW6 (arc=49 days, H=19.6 ~407m) from MLS (Sept. 17.40-41p3)
K20O02A 2020 OA2 (arc=82 days, H=21.7 ~155m) from ATLAS Mauna Loa (Sept. 17.42-46p4) and Eden Obs. (Sept. 17.71-74p3)
K20N00A 2020 NA (arc=76 days, H=21.5 ~170m) from the Zwicky Transient Facility (ZTF) (Sept. 17.32-34p2 & 17.39-41p2) and PS2 (Sept. 17.38-41p8)
K20M03L 2020 ML3 (arc=3 opp, H=20.6 ~257m) from ZTF (Sept. 17.32-34p2 & 17.41-42p2)
K20L03B 2020 LB3 (arc=94 days, H=19.6 ~407m) from ATLAS Haleakala (Sept. 17.42-46p4), Dettelbach Vineyard Obs. (Sept. 17.87-88p3), and Clixby Obs. (Sept. 18.01-02p3)
K20L02A 2020 LA2 (Q=7.496 AU, arc=95 days, H=19.8 ~371m) from ATLAS Mauna Loa (Sept. 17.50-54p4) and Dettelbach Vineyard Obs. (Sept. 18.12-13p3)
K20K05Z 2020 KZ5 (arc=114 days, H=20.0 ~339m) from PS1 (Sept. 17.36-40p8)
K20H08P 2020 HP8 (arc=5 opp, H=20.3 ~295m) from Dettelbach Vineyard Obs. (Sept. 18.01-02p2)
K20A00K 2020 AK (arc=262 days, H=19.2 ~490m) from PS1 (Sept. 16.35-39p7)
K18R07W 2018 RW7 (arc=6 opp, H=21.6 ~162m) from PS2 (Sept. 17.42-46p3 at w=21.8-22.1)
K17X62L 2017 XL62 (arc=2 opp, H=18.7 ~616m) from ZTF (Sept. 17.19-28p4)
K17U02P 2017 UP2 (arc=3 opp, H=20.1 ~323m) from PS1 (Sept. 18.26-28p3)
K17S19E 2017 SE19 (arc=3 opp, H=19.8 ~371m) from PS2 (Sept. 17.54-57p3)
K17S14N 2017 SN14 (arc=4 opp, H=18.8 ~589m) from Guidestar Obs. (Sept. 18.09-13p3)
K16T93F 2016 TF93 (arc=4 opp, H=17.9 ~891m) from PS2 (Sept. 17.53-57p4)
K16N38V 2016 NV38 (Q=4.020 AU, arc=2 opp, H=18.6 ~645m) from CSS (Sept. 17.46-47p4)
K16H00L 2016 HL (arc=5 opp, H=19.8 ~371m) from PS2 (Sept. 17.39-41p3)
K16E85D 2016 ED85 (Q=5.064 AU, arc=3 opp, H=17.7 ~977m) from Ondrejov Obs. (Sept. 14.90p1, 14.95-11p5 & 16.89-06p5), Wickede Obs. (Sept. 15.97p9), CSS (Sept. 17.43-45p3), ATLAS Mauna Loa (Sept. 17.47-49p4), and Frasnes-Lez-Anvaing Obs. (Sept. 18.13-16p2)
K15P57S 2015 PS57 (arc=2 opp, H=21.4 ~178m) from MLS (Sept. 17.24-26p4)
K15B04F 2015 BF4 (arc=6 opp, H=20.4 ~282m) from PS1 (Sept. 17.47-51p4)
K14L21W 2014 LW21 (Q=5.412 AU, arc=3 opp, H=18.6 ~645m) from PS1 (Sept. 17.29-34p3)
K13U14X 2013 UX14 (arc=4 opp, H=18.1 ~812m) from ATLAS Haleakala (Sept. 17.59-62p3)
K13TE4V 2013 TV144 (arc=3 opp, H=20.7 ~245m) from ATLAS Haleakala (Sept. 17.44-46p4)
K13P06Y 2013 PY6 (arc=4 opp, H=19.3 ~467m) from ATLAS Mauna Loa (Sept. 17.44-45p4)
K11G27O 2011 GO27 (arc=4 opp, H=18.9 ~562m) from Dettelbach Vineyard Obs. (Sept. 17.10-11p3 & 18.11-12p3) and ATLAS Mauna Loa (Sept. 17.49-54p4)
K11B59F 2011 BF59 (arc=3 opp, H=19.2 ~490m) from PS2 (Sept. 17.48-52p4)
K10JF3V 2010 JV153 (arc=3 opp, H=19.7 ~389m) from ATLAS Haleakala (Sept. 17.34-36p4)
K09T12K 2009 TK12 (arc=5 opp, H=20.6 ~257m) from PS1 (Sept. 17.42-46p4 at w=21.5-22.1)
K09S19T 2009 ST19 (arc=6 opp, H=18.3 ~741m) from MLS (Sept. 17.46-48p3)
K09F29Y 2009 FY29 (arc=3 opp, H=20.0 ~339m) from PS2 (Sept. 17.38-41p4)
K08W94Z 2008 WZ94 (q=0.345 AU, arc=3 opp, H=20.1 ~323m) from PS1 (Sept. 17.53-59p3)
K06U63D 2006 UD63 (arc=4 opp, H=18.9 ~562m) from MASTER-II Sutherland (Sept. 15.85p2) and ATLAS Haleakala (Sept. 17.39-41p4)
K06S19S 2006 SS19 (Q=4.405 AU, arc=3 opp, H=19.0 ~537m) from ATLAS Haleakala (Sept. 17.48-49p4)
K06H00B 2006 HB (arc=4 opp, H=18.9 ~562m) from ATLAS Haleakala (Sept. 17.41-43p4)
K05S00Q 2005 SQ (arc=5 opp, H=20.2 ~309m) from PS1 (Sept. 17.48-52p4 at w=21.6-22.2)
K05Q10S 2005 QS10 (arc=4 opp, H=18.8 ~589m) from MASTER-II Sutherland (Sept. 15.80-81p2) and ATLAS Haleakala (Sept. 17.37-38p4)
K05JA8T 2005 JT108 (arc=6 opp, H=19.5 ~426m) from MLS (Sept. 17.42-43p4)
K04R84F 2004 RF84 (arc=4 opp, H=18.3 ~741m) from ZTF (Sept. 17.32-34p2 & 17.41-42p2), ATLAS Mauna Loa (Sept. 17.41-45p4), MLS (Sept. 17.44-46p4), and Dettelbach Vineyard Obs. (Sept. 18.04-05p3)
K04Q03D 2004 QD3 (arc=4 opp, H=19.4 ~446m) from Dettelbach Vineyard Obs. (Sept. 16.93p2 & 17.86-87p3) and Castelmartini Obs. (Sept. 17.90-91p3)
K02T67S 2002 TS67 (arc=6 opp, H=19.0 ~537m) from PS2 (Sept. 17.59-62p4)
K00T28U 2000 TU28 (arc=3 opp, H=20.8 ~234m) from ZTF (Sept. 17.35p1 & 17.42-43p3)
K00P27Q 2000 PQ27 (arc=3 opp, H=19.9 ~355m) from ZTF (Sept. 17.32-34p2 & 17.39-41p2), ATLAS Mauna Loa (Sept. 17.44-46p4), and Dettelbach Vineyard Obs. (Sept. 18.03p3)
01036 1036 Ganymed (1924 TD) from MPC code T07 (Sept. 9.57p1 & 16.59-61p3)

MPEC 2020-S66 - "11:17 UT" - 2020 SH

K20S00H 2020 SH (risk listed, Q=4.648 AU, H=22.1 ~129m) was picked up at 0655 UT on 16 Sept. by MLS, observing it at Sept. 16.29-31p4. This detection was confirmed by Steward Mt. Lemmon Sta. (Sept. 16.42p4), Visnjan Obs. (Sept. 16.99p3), St. Pardon de Conques Obs. (Sept. 17.03-05p3), CSS-Kuiper (Sept. 17.21p4), ARO Westfield (Sept. 17.23-25p3), Farpoint Obs. (Sept. 17.25-26p3), McDonald Obs. (Sept. 17.25-26p3 & 18.21p3), and Great Shefford Obs. (Sept. 18.03-05p2).

MPEC 2020-S65 - "11:15 UT" - 2020 RG9

K20R09G 2020 RG9 (borderline-small, H=21.8 ~148m) was picked up at 1124 UT on 14 Sept. by PS1, observing it at Sept. 14.48-51p4 at w=22.34-61, 16.41-47p4 at w=22.65-94, and 17.54-58p2 at G=21.31-22.33. This detection was confirmed by CSS-Kuiper (Sept. 15.46-47p4 at G=21.7-22.3) and PS2 (Sept. 17.48-51p4 at G=21.14-22.32).

MPEC 2020-S64 - "11:13 UT" - 2020 RF9

K20R09F 2020 RF9 (small asteroid, H=24.6 ~41m) was picked up at 1225 UT on 14 Sept. by PS1, observing it at Sept. 14.52-54p3 at w=22.00-22.69, 15.34-39p4 at G=21.77-22.16, 16.41-46p3 at w=22.46-69, and 17.53-59p4 at G=20.96-22.13. This detection was confirmed by PS2 (Sept. 16.44-48p4 at G=21.47-22.71 & 17.42-45p3 at G=21.06-22.59).

MPEC 2020-S63 - "11:12 UT" - 2020 SG

K20S00G 2020 SG (small asteroid, H=25.1 ~32m) was picked up at 1042 UT on 16 Sept. by PS2, observing it at Sept. 16.45-49p3. This detection was confirmed by PS1 (Sept. 14.53-55p3), Visnjan Obs. (Sept. 16.96-98p3), St. Pardon de Conques Obs. (Sept. 16.98-99p3), CSS-Kuiper (Sept. 17.26-27p3), McDonald Obs. (Sept. 17.27p3), and ARO Westfield (Sept. 17.27-28p3).

MPEC 2020-S62 - "11:10 UT" - 2020 RE9

K20R09E 2020 RE9 (small asteroid, H=23.8 ~59m) was picked up at 1104 UT on 15 Sept. by PS1, observing it at Sept. 15.46-51p4 at w=21.85-22.29. This detection was confirmed by PS2 (Sept. 13.49-50p2 at G=20.43-21.17, 16.44-49p4 at G=21.26-22.37 & 17.42-47p3 at w=21.78-22.12), MLS (Sept. 15.38-39p3), R. Wainscoat on Mauna Kea (Sept. 16.34p3), and CSS-Kuiper (Sept. 16.41-42p4).

MPEC 2020-S61 - "06:13 UT" - 2020 SF

K20S00F 2020 SF (small asteroid, H=24.66 ~40m) was picked up at 0836 UT on 16 Sept. by PS1, observing it at Sept. 16.36-39p4 and 17.53-57p3. This detection was confirmed by Visnjan Obs. (Sept. 16.94-96p4), St. Pardon de Conques Obs. (Sept. 17.01-02p3), ARO Westfield (Sept. 17.22p3), CSS-Kuiper (Sept. 17.25p4), and Steward Mt. Lemmon Sta. (Sept. 18.16p4).

MPEC 2020-S60 - "05:50 UT" - 2020 RX8

K20R08X 2020 RX8 (Q=0.990 AU, H=19.51 ~424m) was picked up at 0233 UT on 15 Sept. by MLS, observing it at Sept. 15.11-12p4, 16.14p3, and 18.14p2. This detection was confirmed by Steward Mt. Lemmon Sta. (Sept. 17.10-11p4), CSS-Kuiper (Sept. 17.10-11p4), and McDonald Obs. (Sept. 18.10-11p3).

MPEC 2020-S59 - "03:11 UT" - 2020 RV8

K20R08V 2020 RV8 (small asteroid, H=23.0 ~85m) was picked up at 1036 UT on 14 Sept. by PS2, observing it at Sept. 14.44-47p4. This detection was confirmed by MLS (Sept. 14.36p1), PS1 (Sept. 17.47-50p3), and Visnjan Obs. (Sept. 18.02-03p4).

MPEC 2020-S58 - "03:06 UT" - 2020 SD

K20S00D 2020 SD (small asteroid, H=22.8 ~93m) was picked up at 0902 UT on 16 Sept. by MLS, observing it at Sept. 16.38-39p4. This detection was confirmed by Steward Mt. Lemmon Sta. (Sept. 16.47p3), San Marcello Pistoiese Obs. (Sept. 16.88-91p3), St. Pardon de Conques Obs. (Sept. 16.95-97p3), M57 Obs. (Sept. 17.02-04p2), ROASTERR-1 (Sept. 17.03-05p2), SATINO-1 (Sept. 17.05-07p3), Visnjan Obs. (Sept. 17.15p3), ARO Westfield (Sept. 17.31-32p3), Mountainville Obs. (Sept. 17.32p1 & 17.38p1), Sandlot Obs. (Sept. 17.36-38p3 at G=20.0-25.7), McDonald Obs. (Sept. 17.46-47p3), and Schiaparelli Obs. (Sept. 17.95-96p2).

MPEC 2020-S57 - "03:05 UT" - 2020 SC

K20S00C 2020 SC (risk listed, Earth MOID=1.2 LD, H=26.7 ~15m, close passer) was picked up at 1049 UT on 17 Sept. by ATLAS Haleakala, observing it at Sept. 17.45-47p4 and 17.54p5. This detection was confirmed by ATLAS Mauna Loa (Sept. 17.53-54p6), Guidestar Obs. (Sept. 17.84-86p3), Farra d'Isonzo Obs. (Sept. 17.84-87p3), Xingming Obs. #3 (Sept. 17.87-88p5), SATINO-1 (Sept. 17.88-92p3), Visnjan Obs. (Sept. 17.90p5), Clixby Obs. (Sept. 17.90-91p3), GiaGa Obs. (Sept. 17.91-93p3), Schiaparelli Obs. (Sept. 17.92-93p3), Dax Obs. (Sept. 17.93-94p2), St. Pardon de Conques Obs. (Sept. 18.07-08p2), and ARO Westfield (Sept. 18.10-11p4).

MPEC 2020-S56 - "03:03 UT" - 2020 PQ7

K20P07Q 2020 PQ7 (Centaur, q=6.820 AU, Q=33.447 AU, H=13.3 ~7.41 km) was picked up at 1402 UT on 14 Aug. by PS1, observing it at Aug. 14.59-60p3 at w=21.7-22.2, 19.56-59p4 at G=21.58-22.03, Sept. 16.31-35p4 at w=22.09-39, and 17.53-58p4 at G=21.74-94. This detection was confirmed by PS2 (Aug. 19.41-44p4 at G=21.75-22.31, 27.55-57p3 at G=22.21-38 & Sept. 7.40p1 at G=22.31) and R. Wainscoat/Mauna Kea (Sept. 17.37p3).

MPEC 2020-S55 - "02:23 UT" - 2020 SB

K20S00B 2020 SB (Q=0.988 AU, H=20.3 ~295m) was picked up at 0229 UT on 16 Sept. by CSS, observing it at Sept. 16.10-12p3. This detection was confirmed by Steward Mt. Lemmon Sta. (Sept. 16.14p4 & 17.10p4), ATLAS Haleakala (Sept. 16.24-26p4), Schiaparelli Obs. (Sept. 16.80-81p3), SATINO-1 (Sept. 16.80-82p3), Farra d'Isonzo Obs. (Sept. 16.82-84p2), San Marcello Pistoiese Obs. (Sept. 16.83-85p3), Dax Obs. (Sept. 16.83-84p3), M57 Obs. (Sept. 16.85-88p4), ROASTERR-1 (Sept. 16.86-88p3), St. Pardon de Conques Obs. (Sept. 16.87-88p3), Pascoli Obs. (Sept. 16.94p2), Sandlot Obs. (Sept. 17.08p3 & 18.06-07p3), McDonald Obs. (Sept. 17.09p3), Visnjan Obs. (Sept. 17.77-78p5), Guidestar Obs. (Sept. 17.78-80p4), Dettelbach Vineyard Obs. (Sept. 17.78-80p6), Great Shefford Obs. (Sept. 17.81-82p4), Clixby Obs. (Sept. 17.83-84p5), GiaGa Obs. (Sept. 17.88-89p2), Northolt Branch Obs. (Sept. 17.95-97p5), North Obs. (Sept. 17.95-96p4), and ARO Westfield (Sept. 18.06-07p5).

Observers on 18 September '20

A total of 47 observers appear in today's MPECs.

Code	Observer / observatory
`H21`	Astronomical Research Obs. Westfield in Illinois, 7 in MPECs 2020-S55, 2020-S57, 2020-S58, 2020-S61, 2020-S63, 2020-S66 & 2020-S67 -- 2020 SH, 2020 SG, 2020 SF, 2020 SD, 2020 SC, 2020 SB, 2020 RQ8
`T05`	ATLAS Haleakala in Hawaii, 16 in MPECs 2020-S55, 2020-S57, 2020-S67 & 2020-S68 -- 2020 SC, 2020 SB, 2020 RW7, 2020 RO, 2020 QU6, 2020 PM7, 2020 LB3, 2019 GQ3, 2013 UX14, 2013 TV144, 2012 SH32, 2010 JV153, 2006 UD63, 2006 SS19, 2006 HB, 2005 QS10
`T08`	ATLAS Mauna Loa in Hawaii, 13 in MPECs 2020-S57 & 2020-S67 -- 2020 SC, 2020 RV2, 2020 RE, 2020 QM4, 2020 PD1, 2020 OA2, 2020 LA2, 2019 NC1, 2016 ED85, 2013 PY6, 2011 GO27, 2004 RF84, 2000 PQ27
`160`	Castelmartini Obs. in Italy, 3 in MPEC 2020-S67 -- 2020 RE, 2014 QJ33, 2004 QD3
`703`	Catalina Sky Survey (CSS) in Arizona, 7 in MPECs 2020-S55, 2020-S67 & 2020-S68 -- 2020 SB, 2020 RE1, 2020 QM4, 2020 PC5, 2019 GQ3, 2016 NV38, 2016 ED85
`V06`	Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) in Arizona, 8 in MPECs 2020-S60, 2020-S61, 2020-S62, 2020-S63, 2020-S65, 2020-S66 & 2020-S67 -- 2020 SH, 2020 SG, 2020 SF, 2020 RX8, 2020 RU4, 2020 RG9, 2020 RE9, 2020 RB8
`Z99`	Clixby Obs. in England, 8 in MPECs 2020-S55, 2020-S57 & 2020-S67 -- 2020 SC, 2020 SB, 2020 RQ3, 2020 RH6, 2020 RD5, 2020 RA7, 2020 LB3, 2014 QJ33
`958`	Dax Obs. in France, 2 in MPECs 2020-S55 & 2020-S57 -- 2020 SC, 2020 SB
`K87`	Dettelbach Vineyard Obs. in Germany, 21 in MPECs 2020-S55 & 2020-S67 -- 2020 SC, 2020 SB, 2020 RZ6, 2020 RR, 2020 RQ1, 2020 RH6, 2020 RF, 2020 RE1, 2020 RE, 2020 RD5, 2020 QM4, 2020 PM7, 2020 PC5, 2020 LB3, 2020 LA2, 2020 HP8, 2018 RV3, 2011 GO27, 2004 RF84, 2004 QD3, 2000 PQ27
`N31`	Eden Obs., 1 in MPEC 2020-S67 -- 2020 OA2
`Z582`	program code 2 via ESA Test-Bed Telescope Cebreros in Spain, 1 in MPEC 2020-S67 -- 2020 RF
`734`	Farpoint Obs. in Kansas, 1 in MPEC 2020-S66 -- 2020 SH
`595`	Farra d'Isonzo Obs. in Italy, 2 in MPECs 2020-S55 & 2020-S57 -- 2020 SC, 2020 SB
`C18`	Frasnes-Lez-Anvaing Obs. in Belgium, 1 in MPEC 2020-S67 -- 2016 ED85
`203`	GiaGa Obs. in Italy, 2 in MPECs 2020-S55 & 2020-S57 -- 2020 SC, 2020 SB
`J95`	Great Shefford Obs. in England, 5 in MPECs 2020-S55, 2020-S66 & 2020-S67 -- 2020 SH, 2020 SB, 2020 RZ6, 2020 RB7, 2020 RA6
`A17`	Guidestar Obs. in Germany, 7 in MPECs 2020-S55, 2020-S57 & 2020-S67 -- 2020 SC, 2020 SB, 2020 RW6, 2020 RD5, 2020 RA7, 2020 PD1, 2017 SN14
`Q621`	Hidetaka Sato in Japan via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2020-S67 -- 2020 RW7
`Q625`	Cristovao Jacques in Brazil via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2020-S67 -- 2020 RW7
`Q62[`	M. Suzuki in Japan via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2020-S67 -- 2020 RW7
`K38`	M57 Obs. in Italy, 2 in MPECs 2020-S55 & 2020-S58 -- 2020 SD, 2020 SB
`K95`	MASTER-II Sutherland in South Africa, 2 in MPEC 2020-S67 -- 2006 UD63, 2005 QS10
`568^`	R. Wainscoat on Mauna Kea in Hawaii, 2 in MPECs 2020-S56 & 2020-S62 -- 2020 RE9, 2020 PQ7
`711`	McDonald Obs. in Texas, 5 in MPECs 2020-S55, 2020-S58, 2020-S60, 2020-S63, 2020-S66 & 2020-S67 -- 2020 SH, 2020 SG, 2020 SD, 2020 SB, 2020 RX8
`V01`	Mountainville Obs. in Utah, 1 in MPEC 2020-S58 -- 2020 SD
`T07`	MPC code T07, 1 in MPEC 2020-S67 -- 1036
`474`	Mt. John Obs. in New Zealand, 1 in MPEC 2020-S67 -- 2020 RF5
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 17 in MPECs 2020-S58, 2020-S59, 2020-S60, 2020-S62, 2020-S66, 2020-S67 & 2020-S68 -- 2020 SH, 2020 SD, 2020 RX8, 2020 RV8, 2020 RQ1, 2020 RE9, 2020 RC, 2020 QV4, 2020 QH2, 2020 OW6, 2019 RY, 2019 GQ3, 2016 JN, 2015 PS57, 2009 ST19, 2005 JT108, 2004 RF84
`K74`	Muensterschwarzach Obs. in Germany, 1 in MPEC 2020-S67 -- 2020 RE
`J69`	North Obs. in England, 2 in MPECs 2020-S55 & 2020-S67 -- 2020 SB, 2020 RZ6
`Z80`	Northolt Branch Obs. in England, 1 in MPEC 2020-S55 -- 2020 SB
`557`	Ondrejov Obs. in the Czech Republic, 1 in MPEC 2020-S67 -- 2016 ED85
`F51`	Pan-STARRS 1 (PS1) in Hawaii, 30 in MPECs 2020-S56, 2020-S59, 2020-S61, 2020-S62, 2020-S63, 2020-S64, 2020-S65, 2020-S67, 2020-S68, 2020-S69 & 2020-S70 -- 2020 SG, 2020 SF, 2020 RV8, 2020 RR8, 2020 RR, 2020 RN, 2020 RJ9, 2020 RG9, 2020 RF9, 2020 RE9, 2020 RB8, 2020 QY4, 2020 QV6, 2020 PQ7, 2020 PD1, 2020 PC5, 2020 OA4, 2020 MF4, 2020 KZ5, 2020 HC11, 2020 AK, 2019 GQ3, 2017 UP2, 2015 BF4, 2014 LW21, 2013 VQ4, 2009 TK12, 2008 WZ94, 2005 SQ, 1999 EO3
`F52`	Pan-STARRS 2 (PS2) in Hawaii, 30 in MPECs 2020-S56, 2020-S59, 2020-S62, 2020-S63, 2020-S64, 2020-S65, 2020-S67, 2020-S68 & 2020-S70 -- 2020 SG, 2020 RY1, 2020 RV8, 2020 RU7, 2020 RQ8, 2020 RP4, 2020 RK7, 2020 RH7, 2020 RG9, 2020 RF9, 2020 RE9, 2020 QQ6, 2020 QK6, 2020 QH5, 2020 QG6, 2020 PX1, 2020 PS, 2020 PQ7, 2020 OR, 2020 NA, 2019 GQ3, 2018 RW7, 2017 SE19, 2016 TF93, 2016 HL, 2012 HD20, 2011 BF59, 2009 FY29, 2002 TS67, 1999 EO3
`K63`	Pascoli Obs. in Italy, 1 in MPEC 2020-S55 -- 2020 SB
`L18`	QOS Obs., 1 in MPEC 2020-S67 -- 2014 QJ33
`L04`	ROASTERR-1 in Romania, 2 in MPECs 2020-S55 & 2020-S58 -- 2020 SD, 2020 SB
`104`	San Marcello Pistoiese Obs. in Italy, 2 in MPECs 2020-S55 & 2020-S58 -- 2020 SD, 2020 SB
`H36`	Sandlot Obs. in Kansas, 2 in MPECs 2020-S55 & 2020-S58 -- 2020 SD, 2020 SB
`C95`	SATINO-1 in France, 4 in MPECs 2020-S55, 2020-S57, 2020-S58 & 2020-S67 -- 2020 SD, 2020 SC, 2020 SB, 2010 QA5
`204`	Schiaparelli Obs. in Italy, 3 in MPECs 2020-S55, 2020-S57 & 2020-S58 -- 2020 SD, 2020 SC, 2020 SB
`W881`	Tony Evans in Portugal via Slooh.com Chile Obs. in Chile, 1 in MPEC 2020-S67 -- 2020 RW7
`I93`	St. Pardon de Conques Obs. in France, 6 in MPECs 2020-S55, 2020-S57, 2020-S58, 2020-S61, 2020-S63 & 2020-S66 -- 2020 SH, 2020 SG, 2020 SF, 2020 SD, 2020 SC, 2020 SB
`I52`	Steward Obs. Mt. Lemmon Station in Arizona, 15 in MPECs 2020-S55, 2020-S58, 2020-S60, 2020-S61, 2020-S66 & 2020-S67 -- 2020 SH, 2020 SF, 2020 SD, 2020 SB, 2020 RX8, 2020 RX6, 2020 RU7, 2020 RR7, 2020 RR, 2020 RQ3, 2020 RG6, 2020 RC, 2020 RB, 2020 RA7, 2020 OK7
`T12`	UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 5 in MPEC 2020-S67 -- 2020 RZ6, 2020 RK, 2020 RJ2, 2020 RH7, 2020 RB7
`L01`	Visnjan Obs. in Croatia, 8 in MPECs 2020-S55, 2020-S57, 2020-S58, 2020-S59, 2020-S61, 2020-S63, 2020-S66 & 2020-S67 -- 2020 SH, 2020 SG, 2020 SF, 2020 SD, 2020 SC, 2020 SB, 2020 RW7, 2020 RV8
`G33`	Wickede Obs. in Germany, 3 in MPEC 2020-S67 -- 2020 RF, 2016 ED85, 2014 QJ33
`N88`	Xingming Obs. #3, 1 in MPEC 2020-S57 -- 2020 SC
`I41`	Zwicky Transient Facility (ZTF) in southern California, 6 in MPEC 2020-S67 -- 2020 NA, 2020 ML3, 2017 XL62, 2004 RF84, 2000 TU28, 2000 PQ27

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

Impact Risk Monitoring on 18 September '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 SH	NEODyS	1700	2077-2111	5	5.59e-09	-6.83	-7.0	0	NEODyS: "Based on 32 optical observations (of which 0 are rejected as outliers) from 2020-09-16.289 to 2020-09-18.212."

2020 SC	JPL Sentry	1700	2079-2093	7	3.276641e-07	-7.17	-7.33	0	JPL #2 for the day: Computed at 08:24 today Pacific time based on 54 observations spanning .65625 days (2020-Sep-17.450866 to 2020-Sep-18.107114). Diameter approximately 0.015 km. from weighted mean H=26.71.
2020 SC	NEODyS	1700	2079-2102	5	9.25e-08	-7.72	-8.03	0	NEODyS: "Based on 54 optical observations (of which 0 are rejected as outliers) from 2020-09-17.452 to 2020-09-18.108."

2020 RH7	JPL Sentry	1700	R E M O V E D						JPL: Risk listing removed at 1522 UTC today
2020 RH7	NEODyS	1700	R E M O V E D						-

2020 RB7	JPL Sentry	1700	2105-2117	5	1.860665e-07	-7.91	-8.03	0	JPL: Computed at 08:29 today Pacific time based on 44 observations spanning 2.6175 days (2020-Sep-15.405818 to 2020-Sep-18.023282). Diameter approximately 0.012 km. from weighted mean H=27.29.
2020 RB7	NEODyS	1700	2104-2117	9	3.04e-07	-7.69	-8.0	0	NEODyS: "Based on 44 optical observations (of which 0 are rejected as outliers) from 2020-09-15.407 to 2020-09-18.024."

2020 RZ6	JPL Sentry	1700	R E M O V E D						JPL: Risk listing removed at 1530 UTC today
2020 RZ6	NEODyS	1700	R E M O V E D						-

2020 RJ2	JPL Sentry	1700	2067-2119	23	0.000238106652	-6.17	-6.52	0	JPL: Computed at 08:09 today Pacific time based on 26 observations spanning 7.1978 days (2020-Sep-10.20115 to 2020-Sep-17.398973). Diameter approximately 0.004 km. from weighted mean H=29.38.
2020 RJ2	NEODyS	1700	2087-2117	37	6.46e-05	-6.74	-7.15	0	NEODyS: "Based on 29 optical observations (of which 3 are rejected as outliers) from 2020-09-10.202 to 2020-09-17.400."

2020 RK	JPL Sentry	1700	2089-2089	1	1.427e-07	-7.09	-7.09	0	JPL: Computed at 08:03 today Pacific time based on 102 observations spanning 12.067 days (2020-Sep-05.24723 to 2020-Sep-17.314267). Diameter approximately 0.030 km. from weighted mean H=25.24.
2020 RK	NEODyS	1700	2089-2104	4	6.9e-07	-6.46	-6.79	0	NEODyS: "Based on 102 optical observations (of which 1 are rejected as outliers) from 2020-09-05.248 to 2020-09-17.315."

2017 RJ2	JPL Sentry	0500	2108-2111	7	1.85419e-06	-7.05	-7.36	0	JPL: Computed at 10:52 Sept. 17th of 2017 Pacific time based on 26 observations spanning 2.7566 days (2017-Sep-12.31571 to 2017-Sep-15.072295). Diameter approximately 0.011 km. from weighted mean H=27.48.

2016 SK2	JPL Sentry	0500	2073-2082	5	2.210504e-06	-5.83	-5.86	0	JPL: Computed at 01:54 April 18th of 2017 Pacific time based on 30 observations spanning 31.977 days (2016-Sep-25.12674 to 2016-Oct-27.103638). Diameter approximately 0.029 km. from weighted mean H=25.31.

2013 RS43	JPL Sentry	0500	2073-2116	42	3.936231e-05	-5.67	-6.15	0	JPL: Computed at 17:36 April 6th of 2017 Pacific time based on 36 observations spanning 5.7288 days (2013-Sep-09.38097 to 2013-Sep-15.109813). Diameter approximately 0.013 km. from weighted mean H=27.01.

2009 FZ4	JPL Sentry	0500	2020-2116	397	2.3792468e-06	-5.24	-6.19	0	JPL: Computed at 22:33 April 7th of 2017 Pacific time based on 11 observations spanning .59999 days (2009-Mar-19.36974 to 2009-Mar-19.96973). Diameter approximately 0.031 km. from weighted mean H=25.21.

2007 SN6	JPL Sentry	0500	2022-2059	2	1.05879e-07	-6.60	-6.69	0	JPL: Computed at 22:58 April 10th of 2017 Pacific time based on 24 observations spanning 12.111 days (2007-Sep-18.06172 to 2007-Sep-30.17302). Diameter approximately 0.033 km. from weighted mean H=25.03.

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 18 September '20

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

2100	Grabbed MPEC 2020-S69 - 2020 RJ9 - see above Grabbed MPEC 2020-S70 - 1999 EO3 - see above
1833	Grabbed MPEC 2020-S68 - 2019 GQ3 - see above
1700	Noted that JPL Sentry has updated its 2020 RB7 risk assessment - see above Noted that NEODyS has updated its 2020 RB7 risk assessment - see above Noted that JPL Sentry has removed 2020 RH7 as an impact risk - see above Noted that NEODyS has removed 2020 RH7 as an impact risk - see above Noted that JPL Sentry has updated its 2020 RJ2 risk assessment - see above Noted that NEODyS has updated its 2020 RJ2 risk assessment - see above Noted that JPL Sentry has updated its 2020 RK risk assessment - see above Noted that NEODyS has updated its 2020 RK risk assessment - see above Noted that JPL Sentry has removed 2020 RZ6 as an impact risk - see above Noted that NEODyS has removed 2020 RZ6 as an impact risk - see above Noted that JPL Sentry has updated its 2020 SC risk assessment - see above Noted that NEODyS has posted 2020 SC as an impact risk - see above Noted that NEODyS has posted 2020 SH as an impact risk - see above Grabbed MPEC 2020-S60 - 2020 RX8 - see above Grabbed MPEC 2020-S61 - 2020 SF - see above Grabbed MPEC 2020-S62 - 2020 RE9 - see above Grabbed MPEC 2020-S63 - 2020 SG - see above Grabbed MPEC 2020-S64 - 2020 RF9 - see above Grabbed MPEC 2020-S65 - 2020 RG9 - see above Grabbed MPEC 2020-S66 - 2020 SH - see above Grabbed MPEC 2020-S67 - Daily Orbit Update - see above
0500	Noted that JPL Sentry has updated its 2007 SN6 risk assessment - see above Noted that JPL Sentry has updated its 2009 FZ4 risk assessment - see above Noted that JPL Sentry has updated its 2013 RS43 risk assessment - see above Noted that JPL Sentry has updated its 2016 SK2 risk assessment - see above Noted that JPL Sentry has updated its 2017 RJ2 risk assessment - see above Noted that JPL Sentry has posted 2020 SC as an impact risk - see above
0400	Grabbed MPEC 2020-S55 - 2020 SB - see above Grabbed MPEC 2020-S56 - 2020 PQ7 - see above Grabbed MPEC 2020-S57 - 2020 SC - see above Grabbed MPEC 2020-S58 - 2020 SD - see above Grabbed MPEC 2020-S59 - 2020 RV8 - see above

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