2020-09-27 Tracking News

Contents on 27 September '20

IAU Minor Planet Center
- NEOCP Activity -- 62 listings
- New MPECs -- eleven MPECs
Observers -- 31 observers
Impact Risk Monitoring -- ten objects
Chronology

Asteroid/Comet Connection (A/CC) Resources:

Consolidated Risk Tables - the CRT page
Of 1173 risk-listed objects, 141 have had news in the last 31 days. Updated at 1701 UTC on 27 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 27 September '20

The MPC's NEO Confirmation Page has 62 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 62 objects listed. Of these, 33 were "one nighters." So far The Tracking News has counted a total of 79 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 27 September '20

Minor Planet Electronic Circulars

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

MPEC 2020-S209 time-stamped "01:10 UT" - 2020 SK5 - see below
MPEC 2020-S210 time-stamped "11:24 UT" - 2020 SL5 - see below
MPEC 2020-S211 time-stamped "11:26 UT" - 2020 SM5 - see below
MPEC 2020-S212 time-stamped "11:27 UT" - 2020 SN5 - see below
MPEC 2020-S213 time-stamped "12:02 UT" - Daily Orbit Update - see below
MPEC 2020-S214 time-stamped "16:44 UT" - 2020 SO5 - see below
MPEC 2020-S215 time-stamped "16:45 UT" - 2020 SP5 - see below
MPEC 2020-S216 time-stamped "16:48 UT" - 2020 SQ5 - see below
MPEC 2020-S217 time-stamped "16:52 UT" - 2020 SR5 - see below
MPEC 2020-S218 time-stamped "21:01 UT" - 2020 SS5 - see below
MPEC 2020-S219 time-stamped "21:03 UT" - 2020 ST5

MPEC 2020-S219 - "21:03 UT" - 2020 ST5

K20S05T 2020 ST5 (small asteroid, H=23.3 ~74m) was picked up at 0954 UT on 17 Sept. by Pan-STARRS 1 (PS1), observing it at Sept. 17.41-46p3 at w=22.04-45, 23.42-44p2 at G=21.98-22.07, 26.52-55p3 at w=22.03-62, and 27.55-59p7 at w=22.23-64.

MPEC 2020-S218 - "21:01 UT" - 2020 SS5

K20S05S 2020 SS5 (Earth MOID=1.2 LD, H=24.82 ~37m) was picked up at 0829 UT on 26 Sept. by the Catalina Sky Survey (CSS), observing it at Sept. 26.35-37p3. This detection was confirmed by Steward Obs. Mt. Lemmon Station (Sept. 26.39p4, 26.44p4, 26.51p4 & 27.22p4), PS1 (Sept. 26.58-60p2 & 27.55-58p4), Bernezzo Obs. (Sept. 26.87-88p4), North Obs. (Sept. 26.88-90p7), Oberfrauendorf Obs. (Sept. 26.90p4), Dax Obs. (Sept. 26.94-95p4), Schiaparelli Obs. (Sept. 26.96-97p5), GiaGa Obs. (Sept. 26.99p3), Mountainville Obs. (Sept. 27.26p1, 27.30p1 & 27.35-38p2), AMACS1 (Sept. 27.27p3), Astronomical Research Obs. Westfield (Sept. 27.29p7), Wiggins Obs. (Sept. 27.29p10), ATLAS Haleakala (Sept. 27.46-47p4), QOS Obs. (Sept. 27.79p3), ROASTERR-1 (Sept. 27.80-81p3), and Great Shefford Obs. (Sept. 27.86-87p4).

MPEC 2020-S217 - "16:52 UT" - 2020 SR5

K20S05R 2020 SR5 (small asteroid, Q=4.017 AU, H=25.4 ~28m) was picked up at 0854 UT on 25 Sept. by the Mt. Lemmon Survey (MLS), observing it at Sept. 25.37-39p4. This detection was confirmed by the Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) (Sept. 25.46p3, 26.34-35p4 & 27.37-38p3) and ARO Westfield (Sept. 26.33-34p3).

MPEC 2020-S216 - "16:48 UT" - 2020 SQ5

K20S05Q 2020 SQ5 (Earth MOID=3.7 LD, H=26.4 ~18m) was picked up at 0830 UT on 22 Sept. by the Zwicky Transient Facility (ZTF), observing it at Sept. 22.35p2 and 22.40p2. This detection was confirmed by Pan-STARRS 2 (PS2) (Sept. 22.50-53p4), MLS (Sept. 27.22-23p4), and Steward Mt. Lemmon Sta. (Sept. 27.34p3).

MPEC 2020-S215 - "16:45 UT" - 2020 SP5

K20S05P 2020 SP5 (small asteroid, Earth MOID=4.7 LD, H=23.9 ~56m) was picked up at 1333 UT on 25 Sept. by PS2, observing it at Sept. 25.56-60p4. This detection was confirmed by ARO Westfield (Sept. 26.33-34p2 & 27.32-33p3), Steward Mt. Lemmon Sta. (Sept. 26.34-35p4 & 27.44p4), and PS1 (Sept. 26.52-55p4).

MPEC 2020-S214 - "16:44 UT" - 2020 SO5

K20S05O 2020 SO5 (small asteroid, Earth MOID=4.3 LD, H=25.9 ~22m) was picked up at 0558 UT on 25 Sept. by MLS, observing it at Sept. 25.25-27p4. This detection was confirmed by Steward Mt. Lemmon Sta. (Sept. 25.35p3 & 26.17p4), ARO Westfield (Sept. 26.17-18p5 & 27.23p2), and GiaGa Obs. (Sept. 27.02-05p2).

<< DOU on 27 September '20 >> MPEC 2020-S213 - "12:02 UT" - Daily Orbit Update

Observations of risk-listed objects
K20S04Y 2020 SY4 (small asteroid, arc=4 days, H=27.4 ~11m, close passer) from MLS (Sept. 26.27-28p4)
K20S01O 2020 SO1 (small asteroid, arc=10 days, H=27.1 ~13m, close passer, NHATS target) from Steward Mt. Lemmon Sta. (Sept. 27.38-39p3 at G=21.42-22.13)
Observations of recently (no longer) risk-listed objects
K20S00W 2020 SW (close passer, NHATS target) from Galati Obs. (Sept. 23.85p3)
K20R00B 2020 RB (i=59.2°, Q=5.521 AU, arc=23 days, H=19.1 ~513m) from PS1 (Sept. 26.27-29p3)
Observations of close-passing objects
K20S05A 2020 SA5 (Q=4.252 AU, arc=3 days, H=25.3 ~29m) from Steward Mt. Lemmon Sta. (Sept. 27.32p3)
K20S04S 2020 SS4 (Q=4.047 AU, arc=4 days, H=24.3 ~47m) from Steward Mt. Lemmon Sta. (Sept. 27.37p4)
K20S04R 2020 SR4 (arc=3 days, H=26.4 ~18m) from Steward Mt. Lemmon Sta. (Sept. 27.36p4)
K20S04O 2020 SO4 (arc=4 days, H=27.2 ~12m) from Steward Mt. Lemmon Sta. (Sept. 27.40p4)
K20S04F 2020 SF4 (NHATS target) from CSS-Kuiper (Sept. 26.33-34p2 & 27.29-33p3)
K20S03A 2020 SA3 (arc=7 days, H=25.4 ~28m, NHATS target) from Steward Mt. Lemmon Sta. (Sept. 25.16p4 & 27.15p4) and MLS (Sept. 26.23-24p4)
K20S01M 2020 SM1 (arc=8 days, H=26.2 ~19m, NHATS target) from Steward Mt. Lemmon Sta. (Sept. 27.15p2)
K20S00N 2020 SN (arc=9 days, H=24.8 ~37m) from ATLAS Mauna Loa (Sept. 26.41-44p3)
K20R02K 2020 RK2 (arc=16 days, H=24.2 ~49m) from MLS (Sept. 26.14-16p4), CSS (Sept. 26.23-24p4), and ATLAS Haleakala (Sept. 26.33-36p4)
K01SS6G 2001 SG286 (arc=6 opp, H=20.9 ~224m) from ATLAS Mauna Loa (Sept. 26.32-34p4)
Observation campaigns (NHATS targets, radar support)
K20S03G 2020 SG3 (arc=15 days, H=25.1 ~32m, NHATS) from Steward Mt. Lemmon Sta. (Sept. 27.21-22p3)
K20S03D 2020 SD3 (arc=7 days, H=24.7 ~39m, NHATS) from Steward Mt. Lemmon Sta. (Sept. 27.47-48p4)
K20B11S 2020 BS11 (arc=2 opp, H=22.7 ~98m, NHATS) from MLS (Sept. 26.26-28p3 at G=21.23-22.28)
K18E00B 2018 EB (arc=2 opp, H=21.9 ~141m, radar) from CSS-Kuiper (Sept. 27.15-16p4 at G=21.64-22.68)
K11C02G 2011 CG2 (arc=3 opp, H=21.4 ~178m, NHATS) from MLS (Sept. 26.19-20p4)
-- NHATS target table -- Planetary radar schedules: Arecibo & Goldstone
Observations of small (H>22.0) & smallish (21.7<H<=22.0) asteroids
K20S05D 2020 SD5 (arc=3 days, H=25.8 ~23m) from Steward Mt. Lemmon Sta. (Sept. 27.37-39p3)
K20S05B 2020 SB5 (arc=3 days, H=24.8 ~37m) from Steward Mt. Lemmon Sta. (Sept. 27.42-44p4)
K20S04C 2020 SC4 (Q=4.112 AU, arc=14 days, H=26.6 ~16m) from MLS (Sept. 26.29-30p3) and Steward Mt. Lemmon Sta. (Sept. 27.36p4)
K20S04B 2020 SB4 (arc=13 days, H=23.8 ~59m) from Steward Mt. Lemmon Sta. (Sept. 27.15-16p3)
K20S03Z 2020 SZ3 (arc=10 days, H=25.1 ~32m) from CSS-Kuiper (Sept. 27.22p2)
K20S03V 2020 SV3 (arc=7 days, H=22.2 ~123m) from Steward Mt. Lemmon Sta. (Sept. 26.50-51p3 & 27.47p4) and PS1 (Sept. 26.57-61p3)
K20S03Q 2020 SQ3 (arc=5 days, H=26.3 ~19m) from CSS-Kuiper (Sept. 27.14-15p4)
K20S03L 2020 SL3 (arc=11 days, H=25.5 ~27m) from MLS (Sept. 26.25-26p4)
K20S02Y 2020 SY2 (arc=7 days, H=23.3 ~74m) from MLS (Sept. 26.37-39p4)
K20S02S 2020 SS2 (arc=9 days, H=22.7 ~98m) from MLS (Sept. 26.14-16p4) and Steward Mt. Lemmon Sta. (Sept. 27.17-22p4)
K20S02Q 2020 SQ2 (arc=13 days, H=23.0 ~85m) from MLS (Sept. 26.31-32p4)
K20S02P 2020 SP2 (arc=21 days, H=24.2 ~49m) from Steward Mt. Lemmon Sta. (Sept. 26.20-21p3 & 27.14p3)
K20S01W 2020 SW1 (arc=15 days, H=23.1 ~81m) from CSS-Kuiper (Sept. 27.24p2 at G=22.74-23.04)
K20S01N 2020 SN1 (arc=134 days, H=22.9 ~89m) from PS1 (Sept. 26.45-49p3)
K20S00L 2020 SL (arc=22 days, H=22.8 ~93m) from PS2 (Sept. 26.44-46p3) and PS1 (Sept. 26.45-49p3)
K20R07S 2020 RS7 (arc=11 days, H=25.5 ~27m) from PS1 (Sept. 26.52-55p4)
K20R06P 2020 RP6 (arc=12 days, H=24.9 ~35m) from MLS (Sept. 26.41-43p4)
K20R03S 2020 RS3 (q=0.342 AU, arc=17 days, H=22.8 ~93m) from Steward Mt. Lemmon Sta. (Sept. 27.32-33p2)
K20R03R 2020 RR3 (arc=16 days, H=22.2 ~123m) from MLS (Sept. 26.28-30p4)
K20R03J 2020 RJ3 (arc=15 days, H=23.4 ~71m) from CSS (Sept. 26.23-24p4) and ATLAS Haleakala (Sept. 26.30-33p4)
K20R02L 2020 RL2 (Q=4.143 AU, arc=17 days, H=24.8 ~37m) from CSS-Kuiper (Sept. 27.28-29p4)
K20R01C 2020 RC1 (arc=46 days, H=23.6 ~65m) from CSS-Kuiper (Sept. 27.25-26p3)
K20Q06R 2020 QR6 (arc=30 days, H=22.5 ~107m) from MLS (Sept. 26.24-26p4)
K20Q03P 2020 QP3 (arc=39 days, H=22.7 ~98m) from MLS (Sept. 26.17-18p4)
K20P05S 2020 PS5 (arc=60 days, H=22.1 ~129m) from MLS (Sept. 26.19-20p3)
K20P03R 2020 PR3 (arc=41 days, H=23.0 ~85m) from MLS (Sept. 26.22-24p4)
K20N00F 2020 NF (arc=123 days, H=24.0 ~54m) from SATINO-1 (Aug. 7.87-90p3)
K17S20T 2017 ST20 (arc=3 opp, H=22.5 ~107m) from MLS (Sept. 26.32-34p4 at G=20.45-22.20)
K12S32H 2012 SH32 (arc=2 opp, H=22.2 ~123m) from MLS (Sept. 26.16-18p4)
K20S02H 2020 SH2 (i=44.2°, arc=16 days, H=22.0 ~135m) from MLS (Sept. 26.16-18p4) and Steward Mt. Lemmon Sta. (Sept. 27.14p4)
K20Q02H 2020 QH2 (arc=57 days, H=21.8 ~148m) from PS2 (Sept. 26.44-46p3) and PS1 (Sept. 26.45-49p3)
K20P07C 2020 PC7 (arc=50 days, H=21.8 ~148m) from CSS-Kuiper (Sept. 27.27-28p4)
K20P04M 2020 PM4 (arc=42 days, H=21.9 ~141m) from MLS (Sept. 26.18-20p4)
K20O07K 2020 OK7 (arc=59 days, H=21.8 ~148m) from Steward Mt. Lemmon Sta. (Sept. 27.23-25p3)
K20L02J 2020 LJ2 (arc=103 days, H=21.8 ~148m) from MLS (Sept. 26.11-13p4)
K16N01A 2016 NA1 (arc=170 days, H=22.0 ~135m) from Castelmartini Obs. (2016 Aug. 13.95p3)
K10R12C 2010 RC12 (arc=2 opp, H=21.9 ~141m) from PS1 (Sept. 26.45-50p8)
Observations of other objects
K20S03K 2020 SK3 from Steward Mt. Lemmon Sta. (Sept. 27.15p4)
K20Q06Q 2020 QQ6 (Q=4.107 AU, arc=44 days, H=19.8 ~371m) from MLS (Sept. 26.27-28p4)
K20Q04M 2020 QM4 (arc=38 days, H=18.6 ~645m) from CSS (Sept. 26.37-39p3) and MLS (Sept. 26.38-39p4)
K20P07F 2020 PF7 (Q=5.014 AU, arc=46 days, H=18.8 ~589m) from ZTF (Sept. 23.22-28p3 & 23.37p1)
K20P05C 2020 PC5 (Q=4.177 AU, arc=43 days, H=18.5 ~676m) from MLS (Sept. 26.21-22p4), CSS (Sept. 26.25-26p4), and ATLAS Haleakala (Sept. 26.33-36p4)
K20P04X 2020 PX4 (arc=44 days, H=21.3 ~186m) from ZTF (Sept. 23.32p1, 25.14p1, 25.19p1, 25.35-36p2, 26.15-19p3 & 26.36p1)
K20P02K 2020 PK2 (arc=71 days, H=21.5 ~170m) from Steward Mt. Lemmon Sta. (Sept. 27.29-33p3)
K20P01D 2020 PD1 (Q=4.135 AU, arc=96 days, H=19.3 ~467m) from ZTF (Sept. 25.29p1 & 25.35p1), CSS (Sept. 26.29-30p4), and ATLAS Haleakala (Sept. 26.38-40p4)
K20P01B 2020 PB1 (arc=59 days, H=21.0 ~214m) from Steward Mt. Lemmon Sta. (Sept. 27.45p4)
K20O03W 2020 OW3 (Q=4.802 AU, arc=69 days, H=19.6 ~407m) from ATLAS Mauna Loa (Sept. 26.44-50p4)
K20O02A 2020 OA2 (arc=91 days, H=21.7 ~155m) from CSS (Sept. 26.21-22p2)
K20N00A 2020 NA (arc=84 days, H=21.5 ~170m) from ZTF (Sept. 23.31-33p3 & 23.42p1)
K20M03L 2020 ML3 (arc=3 opp, H=20.6 ~257m) from PS1 (Sept. 26.45-49p4)
K20L03B 2020 LB3 (arc=2 opp, H=19.6 ~407m) from ATLAS Haleakala (Sept. 26.33-35p4)
K20L02A 2020 LA2 (Q=7.490 AU, arc=103 days, H=19.8 ~371m) from CSS (Sept. 26.42-43p3)
K20K02T 2020 KT2 (Q=4.019 AU, arc=160 days, H=21.7 ~155m) from CSS-Kuiper (Sept. 27.46-47p2)
K19G03Q 2019 GQ3 (arc=2 opp, H=20.7 ~245m) from ATLAS Haleakala (Sept. 26.38-40p4)
K18T05S 2018 TS5 (arc=4 opp, H=21.4 ~178m) from ZTF (Sept. 25.33-36p2) and PS2 (Sept. 26.47-50p4)
K17X62L 2017 XL62 (arc=2 opp, H=18.7 ~616m) from ZTF (Sept. 25.12p1, 25.19-23p2 & 26.16-18p2)
K16Y08T 2016 YT8 (arc=3 opp, H=20.4 ~282m) from UH/Tholen NEO Follow-Up 2.24m Telescope (Sept. 16.29p1 at G=24.63 & 17.31p1 at G=24.56)
K16T56Z 2016 TZ56 (i=60.6°, arc=4 opp, H=19.3 ~467m) from MLS (Sept. 26.31-32p4) and PS1 (Sept. 26.59-62p3)
K16T18L 2016 TL18 (arc=3 opp, H=21.5 ~170m) from CSS-Kuiper (Sept. 27.48-49p4 at G=21.15-22.23)
K16H00L 2016 HL (arc=5 opp, H=19.8 ~371m) from MLS (Sept. 26.26-28p4)
K14UB6R 2014 UR116 (arc=6 opp, H=19.8 ~371m) from MLS (Sept. 26.50-51p4)
K13P06Y 2013 PY6 (arc=4 opp, H=19.3 ~467m) from Northolt Branch Obs. (Sept. 25.92-93p3), CSS (Sept. 26.29-30p4), MLS (Sept. 26.29-30p4), and ATLAS Haleakala (Sept. 26.38-40p3)
K10T05U 2010 TU5 (arc=3 opp, H=19.0 ~537m) from MLS (Sept. 26.44-45p4)
K10S15F 2010 SF15 (arc=2 opp, H=21.2 ~195m) from MLS (Sept. 26.29-30p4)
K09T12K 2009 TK12 (arc=5 opp, H=20.6 ~257m) from MLS (Sept. 26.28-30p4)
K09J01K 2009 JK1 (arc=4 opp, H=19.7 ~389m) from MLS (Sept. 26.44-45p4)
K07VD7X 2007 VX137 (arc=5 opp, H=18.5 ~676m) from program code 3 via ESA Optical Ground Station (ESA OGS) (Sept. 22.14-18p4), Northolt Branch Obs. (Sept. 25.91-92p3), and CSS (Sept. 26.29-31p4)
K06S07A 2006 SA7 (arc=4 opp, H=19.4 ~446m) from MLS (Sept. 26.27-28p4)
K04R84F 2004 RF84 (arc=4 opp, H=18.3 ~741m) from ATLAS Mauna Loa (Sept. 26.40-50p6)
K01Q34E 2001 QE34 (arc=5 opp, H=19.1 ~513m) from MLS (Sept. 26.16-18p4)
K00P27Q 2000 PQ27 (arc=3 opp, H=19.9 ~355m) from PS1 (Sept. 26.45-49p4)
J99S10K 1999 SK10 (arc=4 opp, H=19.7 ~389m) from MLS (Sept. 26.23-24p4)

MPEC 2020-S212 - "11:27 UT" - 2020 SN5

K20S05N 2020 SN5 (risk listed, Earth MOID=0.4 LD, H=28.1 ~8m, close passer) was picked up at 1002 UT on 25 Sept. by ATLAS Haleakala, observing it at Sept. 25.42-44p4. This detection was confirmed by Great Shefford Obs. (Sept. 25.91-92p4), Steward Mt. Lemmon Sta. (Sept. 26.19p3 & 27.27p3), Sandlot Obs. (Sept. 26.21-22p3), and ARO Westfield (Sept. 26.22p3 & 27.20-21p3).

MPEC 2020-S211 - "11:26 UT" - 2020 SM5

K20S05M 2020 SM5 (small asteroid, H=24.6 ~41m) was picked up at 0756 UT on 25 Sept. by MLS, observing it at Sept. 25.33-35p4. This detection was confirmed by Steward Mt. Lemmon Sta. (Sept. 25.41p3, 26.23p3 & 27.22p3), Great Shefford Obs. (Sept. 26.03-05p3), ARO Westfield (Sept. 26.25-26p3 & 27.22p2), GiaGa Obs. (Sept. 26.94-96p2), and Schiaparelli Obs. (Sept. 27.08-09p2).

MPEC 2020-S210 - "11:24 UT" - 2020 SL5

K20S05L 2020 SL5 (small asteroid, H=23.2 ~78m) was picked up at 1121 UT on 25 Sept. by PS1, observing it at Sept. 25.47-51p4. This detection was confirmed by MLS (Sept. 16.33-35p3 & 18.39-41p3), ARO Westfield (Sept. 26.18-19p3 & 27.17-19p3), and Steward Mt. Lemmon Sta. (Sept. 27.23p4).

MPEC 2020-S209 - "01:10 UT" - 2020 SK5

K20S05K 2020 SK5 (risk listed, Q=4.412 AU, Earth MOID=3.4 LD, H=23.0 ~85m) was picked up at 0811 UT on 25 Sept. by ATLAS Haleakala, observing it at Sept. 25.34-37p4. This detection was confirmed by ATLAS Mauna Loa (Sept. 25.51p5), Great Shefford Obs. (Sept. 25.95-96p3), ARO Westfield (Sept. 26.15-16p5), Steward Mt. Lemmon Sta. (Sept. 26.19p3), Arcadia Obs. (Sept. 26.47-50p3), Schiaparelli Obs. (Sept. 26.95-96p3), and Galilei Obs. (Sept. 26.96-97p2).

Observers on 27 September '20

A total of 31 observers appear in today's MPECs.

Code	Observer / observatory
`W94`	AMACS1 in Chile, 1 in MPEC 2020-S218 -- 2020 SS5
`E23`	Arcadia Obs. in New South Wales, 1 in MPEC 2020-S209 -- 2020 SK5
`H21`	Astronomical Research Obs. Westfield in Illinois, 8 in MPECs 2020-S209, 2020-S210, 2020-S211, 2020-S212, 2020-S214, 2020-S215, 2020-S217 & 2020-S218 -- 2020 SS5, 2020 SR5, 2020 SP5, 2020 SO5, 2020 SN5, 2020 SM5, 2020 SL5, 2020 SK5
`T05`	ATLAS Haleakala in Hawaii, 10 in MPECs 2020-S209, 2020-S212, 2020-S213 & 2020-S218 -- 2020 SS5, 2020 SN5, 2020 SK5, 2020 RK2, 2020 RJ3, 2020 PD1, 2020 PC5, 2020 LB3, 2019 GQ3, 2013 PY6
`T08`	ATLAS Mauna Loa in Hawaii, 5 in MPECs 2020-S209 & 2020-S213 -- 2020 SN, 2020 SK5, 2020 OW3, 2004 RF84, 2001 SG286
`C77`	Bernezzo Obs. in Italy, 1 in MPEC 2020-S218 -- 2020 SS5
`160`	Castelmartini Obs. in Italy, 1 in MPEC 2020-S213 -- 2016 NA1
`703`	Catalina Sky Survey (CSS) in Arizona, 10 in MPECs 2020-S213 & 2020-S218 -- 2020 SS5, 2020 RK2, 2020 RJ3, 2020 QM4, 2020 PD1, 2020 PC5, 2020 OA2, 2020 LA2, 2013 PY6, 2007 VX137
`V06`	Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) in Arizona, 11 in MPECs 2020-S213 & 2020-S217 -- 2020 SZ3, 2020 SW1, 2020 SR5, 2020 SQ3, 2020 SF4, 2020 RL2, 2020 RC1, 2020 PC7, 2020 KT2, 2018 EB, 2016 TL18
`958`	Dax Obs. in France, 1 in MPEC 2020-S218 -- 2020 SS5
`J043`	program code 3 via ESA Optical Ground Station in the Canary Islands, 1 in MPEC 2020-S213 -- 2007 VX137
`C73`	Galati Obs. in Romania, 1 in MPEC 2020-S213 -- 2020 SW
`X31`	Galilei Obs., 1 in MPEC 2020-S209 -- 2020 SK5
`203`	GiaGa Obs. in Italy, 3 in MPECs 2020-S211, 2020-S214 & 2020-S218 -- 2020 SS5, 2020 SO5, 2020 SM5
`J95`	Great Shefford Obs. in England, 4 in MPECs 2020-S209, 2020-S211, 2020-S212 & 2020-S218 -- 2020 SS5, 2020 SN5, 2020 SM5, 2020 SK5
`V01`	Mountainville Obs. in Utah, 1 in MPEC 2020-S218 -- 2020 SS5
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 40 in MPECs 2020-S210, 2020-S211, 2020-S213, 2020-S214, 2020-S216 & 2020-S217 -- 2020 SY4, 2020 SY2, 2020 SS2, 2020 SR5, 2020 SQ5, 2020 SQ2, 2020 SO5, 2020 SM5, 2020 SL5, 2020 SL3, 2020 SH2, 2020 SC4, 2020 SA3, 2020 RR3, 2020 RP6, 2020 RK2, 2020 QR6, 2020 QQ6, 2020 QP3, 2020 QM4, 2020 PS5, 2020 PR3, 2020 PM4, 2020 PC5, 2020 LJ2, 2020 BS11, 2017 ST20, 2016 TZ56, 2016 HL, 2014 UR116, 2013 PY6, 2012 SH32, 2011 CG2, 2010 TU5, 2010 SF15, 2009 TK12, 2009 JK1, 2006 SA7, 2001 QE34, 1999 SK10
`J69`	North Obs. in England, 1 in MPEC 2020-S218 -- 2020 SS5
`Z80`	Northolt Branch Obs. in England, 2 in MPEC 2020-S213 -- 2013 PY6, 2007 VX137
`G34`	Oberfrauendorf Obs. in Germany, 1 in MPEC 2020-S218 -- 2020 SS5
`F51`	Pan-STARRS 1 (PS1) in Hawaii, 14 in MPECs 2020-S210, 2020-S213, 2020-S215, 2020-S218 & 2020-S219 -- 2020 SV3, 2020 ST5, 2020 SS5, 2020 SP5, 2020 SN1, 2020 SL5, 2020 SL, 2020 RS7, 2020 RB, 2020 QH2, 2020 ML3, 2016 TZ56, 2010 RC12, 2000 PQ27
`F52`	Pan-STARRS 2 (PS2) in Hawaii, 5 in MPECs 2020-S213, 2020-S215 & 2020-S216 -- 2020 SQ5, 2020 SP5, 2020 SL, 2020 QH2, 2018 TS5
`L18`	QOS Obs., 1 in MPEC 2020-S218 -- 2020 SS5
`L04`	ROASTERR-1 in Romania, 1 in MPEC 2020-S218 -- 2020 SS5
`H36`	Sandlot Obs. in Kansas, 1 in MPEC 2020-S212 -- 2020 SN5
`C95`	SATINO-1 in France, 1 in MPEC 2020-S213 -- 2020 NF
`204`	Schiaparelli Obs. in Italy, 3 in MPECs 2020-S209, 2020-S211 & 2020-S218 -- 2020 SS5, 2020 SM5, 2020 SK5
`I52`	Steward Obs. Mt. Lemmon Station in Arizona, 30 in MPECs 2020-S209, 2020-S210, 2020-S211, 2020-S212, 2020-S213, 2020-S214, 2020-S215, 2020-S216 & 2020-S218 -- 2020 SV3, 2020 SS5, 2020 SS4, 2020 SS2, 2020 SR4, 2020 SQ5, 2020 SP5, 2020 SP2, 2020 SO5, 2020 SO4, 2020 SO1, 2020 SN5, 2020 SM5, 2020 SM1, 2020 SL5, 2020 SK5, 2020 SK3, 2020 SH2, 2020 SG3, 2020 SD5, 2020 SD3, 2020 SC4, 2020 SB5, 2020 SB4, 2020 SA5, 2020 SA3, 2020 RS3, 2020 PK2, 2020 PB1, 2020 OK7
`T12`	UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2020-S213 -- 2016 YT8
`718`	Wiggins Obs. in Utah, 1 in MPEC 2020-S218 -- 2020 SS5
`I41`	Zwicky Transient Facility (ZTF) in southern California, 7 in MPECs 2020-S213 & 2020-S216 -- 2020 SQ5, 2020 PX4, 2020 PF7, 2020 PD1, 2020 NA, 2018 TS5, 2017 XL62

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

Impact Risk Monitoring on 27 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 SN5	JPL Sentry	1700	2043-2109	6	1.360298e-06	-7.06	-7.08	0	JPL: Computed at 05:32 today Pacific time based on 23 observations spanning 1.8514 days (2020-Sep-25.418242 to 2020-Sep-27.269599). Diameter approximately 0.008 km. from weighted mean H=28.19.

2020 SK5	NEODyS	1700	2048	1	1.06e-07	-5.85	-5.85	0	NEODyS: "Based on 28 optical observations (of which 0 are rejected as outliers) from 2020-09-25.342 to 2020-09-26.969."
2020 SK5	JPL Sentry	0440	2078-2078	3	1.82722e-08	-6.94	-7.07	0	JPL: Computed at 19:27 Sept. 26th Pacific time based on 28 observations spanning 1.6267 days (2020-Sep-25.34163 to 2020-Sep-26.96836). Diameter approximately 0.085 km. from weighted mean H=23.00.

2020 SY4	JPL Sentry	1700	2061-2113	5	3.25653e-06	-6.73	-6.91	0	JPL: Computed at 07:49 today Pacific time based on 21 observations spanning 3.9004 days (2020-Sep-22.38159 to 2020-Sep-26.281975). Diameter approximately 0.011 km. from weighted mean H=27.43.

2020 SU4	NEODyS	1700	2076	1	2.77e-11	-10.09	-10.09	0	NEODyS: "Based on 26 optical observations (of which 0 are rejected as outliers) from 2020-09-23.507 to 2020-09-26.479."

2020 SO1	JPL Sentry	1700	R E M O V E D						JPL: Risk listing removed at 1432 UTC today

2020 SQ	NEODyS	1700	2110-2117	3	1.71e-07	-8.34	-8.7	0	NEODyS: "Based on 31 optical observations (of which 0 are rejected as outliers) from 2020-09-12.429 to 2020-09-26.245."

2017 SF20	JPL Sentry	0440	2034-2034	1	3.328e-04	-4.61	-4.61	0	JPL: Computed at 07:02 Aug. 22nd Pacific time based on 33 observations spanning 17.884 days (2017-Sep-28.36701 to 2017-Oct-16.25147). Diameter approximately 0.007 km. from weighted mean H=28.42.

2016 TT	JPL Sentry	0440	2084-2095	4	3.9823e-07	-7.04	-7.41	0	JPL: Computed at 22:53 April 13th of 2017 Pacific time based on 62 observations spanning 31.188 days (2016-Oct-02.31757 to 2016-Nov-02.505288). Diameter approximately 0.021 km. from weighted mean H=26.02.

2014 SR223	JPL Sentry	0440	2063-2063	1	1.495e-06	-6.49	-6.49	0	JPL: Computed at 08:06 April 20th of 2019 Pacific time based on 66 observations spanning 11.148 days (2014-Sep-22.296176 to 2014-Oct-03.444392). Diameter approximately 0.015 km. from weighted mean H=26.74.

2011 SE58	JPL Sentry	0440	2042-2055	3	5.7704e-07	-7.21	-7.35	0	JPL: Computed at 03:34 April 11th of 2017 Pacific time based on 55 observations spanning 5.6396 days (2011-Sep-21.36854 to 2011-Sep-27.008189). Diameter approximately 0.010 km. from weighted mean H=27.63.

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 27 September '20

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

2110	Grabbed MPEC 2020-S218 - 2020 SS5 - see above Grabbed MPEC 2020-S219 - 2020 ST5 - see above
1700	Noted that NEODyS has posted 2020 SK5 as an impact risk - see above Noted that JPL Sentry has posted 2020 SN5 as an impact risk - see above Noted that JPL Sentry has removed 2020 SO1 as an impact risk - see above Noted that NEODyS has updated its 2020 SQ risk assessment - see above Noted that NEODyS has updated its 2020 SU4 risk assessment - see above Noted that JPL Sentry has updated its 2020 SY4 risk assessment - see above Grabbed MPEC 2020-S210 - 2020 SL5 - see above Grabbed MPEC 2020-S211 - 2020 SM5 - see above Grabbed MPEC 2020-S212 - 2020 SN5 - see above Grabbed MPEC 2020-S213 - Daily Orbit Update - see above Grabbed MPEC 2020-S214 - 2020 SO5 - see above Grabbed MPEC 2020-S215 - 2020 SP5 - see above Grabbed MPEC 2020-S216 - 2020 SQ5 - see above Grabbed MPEC 2020-S217 - 2020 SR5 - see above
0440	Noted that JPL Sentry has updated its 2011 SE58 risk assessment - see above Noted that JPL Sentry has updated its 2014 SR223 risk assessment - see above Noted that JPL Sentry has updated its 2016 TT risk assessment - see above Noted that JPL Sentry has updated its 2017 SF20 risk assessment - see above Noted that JPL Sentry has posted 2020 SK5 as an impact risk - see above Grabbed MPEC 2020-S209 - 2020 SK5 - see above

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