2020-09-20 Tracking News

Contents on 20 September '20

IAU Minor Planet Center
- NEOCP Activity -- 72 listings
- New MPECs -- nineteen MPECs
Observers -- 57 observers
Impact Risk Monitoring -- twelve objects
Chronology

Asteroid/Comet Connection (A/CC) Resources:

Consolidated Risk Tables - the CRT page
Of 1165 risk-listed objects, 102 have had news in the last 31 days. Updated at 2305 UTC on 20 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 20 September '20

The MPC's NEO Confirmation Page has 72 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 72 objects listed. Of these, 46 were "one nighters." So far The Tracking News has counted a total of 104 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 20 September '20

Minor Planet Electronic Circulars

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

MPEC 2020-S105 time-stamped "03:38 UT" - Comet C/2020 S2 (Panstarrs) - see below
MPEC 2020-S106 time-stamped "11:29 UT" - 2020 SR1 - see below
MPEC 2020-S107 time-stamped "11:32 UT" - 2020 ST1 - see below
MPEC 2020-S108 time-stamped "11:35 UT" - 2015 FR432 - see below
MPEC 2020-S109 time-stamped "11:40 UT" - 2020 SW1 - see below
MPEC 2020-S110 time-stamped "11:42 UT" - 2020 RZ9 - see below
MPEC 2020-S111 time-stamped "11:43 UT" - 2020 SX1 - see below
MPEC 2020-S112 time-stamped "11:45 UT" - 2020 SY1 - see below
MPEC 2020-S113 time-stamped "11:47 UT" - 2020 SZ1 - see below
MPEC 2020-S114 time-stamped "11:51 UT" - 2020 SA2 - see below
MPEC 2020-S115 time-stamped "11:55 UT" - 2020 SB2 - see below
MPEC 2020-S116 time-stamped "12:08 UT" - Daily Orbit Update - see below
MPEC 2020-S117 time-stamped "15:00 UT" - 2018 SQ3 - see below
MPEC 2020-S118 time-stamped "18:41 UT" - 2017 RM122 - see below
MPEC 2020-S119 time-stamped "22:24 UT" - Comet C/2020 S3 (Erasmus) - see below
MPEC 2020-S120 time-stamped "23:44 UT" - 2020 SH2 - see below
MPEC 2020-S121 time-stamped "23:47 UT" - 2020 SJ2 - see below
MPEC 2020-S122 time-stamped "23:50 UT" - 2020 SK2 - see below
MPEC 2020-S123 time-stamped "23:54 UT" - 2020 SL2

MPEC 2020-S123 - "23:54 UT" - 2020 SL2

K20S02L 2020 SL2 (small asteroid, H=26.1 ~20m) was picked up at 0706 UT on 20 Sept. by the Mt. Lemmon Survey (MLS), observing it at Sept. 16.27-28p3 and 20.30-32p4. This detection was confirmed by Pan-STARRS 1 (PS1) (Sept. 18.31-35p3), Steward Obs. Mt. Lemmon Station (Sept. 20.40-41p4), and Visnjan Obs. (Sept. 20.84p3).

MPEC 2020-S122 - "23:50 UT" - 2020 SK2

K20S02K 2020 SK2 (small asteroid, H=24.6 ~41m) was picked up at 0742 UT on 20 Sept. by MLS, observing it at Sept. 20.32-34p4. This detection was confirmed by Pan-STARRS 2 (PS2) (Sept. 16.54-58p3), PS1 (Sept. 17.37-40p4), Steward Mt. Lemmon Sta. (Sept. 20.42p4), program code 1 via KLENOT (Sept. 20.83p6), Great Shefford Obs. (Sept. 20.87-89p4), and Teplice Obs. (Sept. 20.94-96p3).

MPEC 2020-S121 - "23:47 UT" - 2020 SJ2

K20S02J 2020 SJ2 (small asteroid, Earth MOID=3.0 LD, H=26.7 ~15m) was picked up at 0743 UT on 20 Sept. by MLS, observing it at Sept. 20.32-34p4. This detection was confirmed by Steward Mt. Lemmon Sta. (Sept. 20.40p4), Farra d'Isonzo Obs. (Sept. 20.80-81p3), Oberfrauendorf Obs. (Sept. 20.81p5), Teplice Obs. (Sept. 20.81-82p3), ROASTERR-1 (Sept. 20.82-84p3), KLENOT/code 1 (Sept. 20.84p7), Guidestar Obs. (Sept. 20.85p5), Galhassin Robotic Telescope (Sept. 20.85p1 & 20.93-95p2), Hoyerswerda Obs. (Sept. 20.85-86p5), Great Shefford Obs. (Sept. 20.86p4), North Obs. (Sept. 20.87-89p4), Northolt Branch Obs. (Sept. 20.89-90p4), Visnjan Obs. (Sept. 20.89p3), Altschwendt Obs. (Sept. 20.94-95p4), and Nonndorf Obs. (Sept. 20.95p2).

MPEC 2020-S120 - "23:44 UT" - 2020 SH2

K20S02H 2020 SH2 (small asteroid, i=44.2°, H=22.1 ~129m) was picked up at 1039 UT on 20 Sept. by ATLAS Mauna Loa, observing it at Sept. 20.44-51p4 and 20.60p5. This detection was confirmed by PS1 (Sept. 11.57-60p3), PS2 (Sept. 19.44-46p3), Galhassin RT (Sept. 20.83p1 & 20.89-91p2), KLENOT/code 1 (Sept. 20.85p10), Visnjan Obs. (Sept. 20.85p3), Altschwendt Obs. (Sept. 20.90-91p3), North Obs. (Sept. 20.91p3), Great Shefford Obs. (Sept. 20.91-92p4), Teplice Obs. (Sept. 20.92-93p4), and Farra d'Isonzo Obs. (Sept. 20.92-93p3).

MPEC 2020-S119 - "22:24 UT" - Comet C/2020 S3 (Erasmus)

CK20S030* C/2020 S3 (Erasmus) (i=19.8°, q=0.411 AU, TP=2020 Dec. 13.23896 TT) was picked up at 1440 UT on 17 Sept. by ATLAS Mauna Loa, observing it at Sept. 17.61-64p4. This detection was confirmed by iTelescope Obs. Siding Spring (Sept. 17.79p2), iTelescope Obs. Mayhill (Sept. 18.47p5 & 20.45p2), Hidetaka Sato via iTelescope Obs. Mayhill (Sept. 18.48p2), Salvatore di Giacomo Obs. (Sept. 19.09-14p3 & 20.09-14p3), ROASTERR-1 (Sept. 19.10-12p2), Stixendorf Obs. (Sept. 19.11-13p5), Visnjan Obs. (Sept. 19.11-12p6), GINOP-KHK (Sept. 19.13p2), Chelmsford Obs. (Sept. 19.16-18p4), B. Lutkenhoner via Slooh.com Canary Islands Obs. (Sept. 19.21-24p3), program code 4 via ESA Optical Ground Station (ESA OGS) (Sept. 19.23p3), B. Lutkenhoner via Slooh.com Chile Obs. (Sept. 20.37-38p2), and Mountainville Obs. (Sept. 20.49-50p2).

MPEC 2020-S118 - "18:41 UT" - 2017 RM122

K17RC2M 2017 RM122 (small asteroid, H=23.8 ~59m) was picked up at 0959 UT on 14 Sept. 2017 by PS1, observing it at 2017 July 30.49-53p4 at G=21.80-23.51, 2017 Aug. 1.53-56p3 at G=22.41-23.44, 2017 Aug. 3.53-56p7 at G=21.26-22.69, 2017 Sept. 14.42-45p2 at w=21.3-5, 2017 Sept. 17.38-42p4 at G=21.29-43, 2017 Sept. 22.38-40p3 at w=21.4-7, 2017 Sept. 25.38-42p4 at w=21.4-8, and 2017 Sept. 28.44-47p3 at w=21.4-8.

MPEC 2020-S117 - "15:00 UT" - 2018 SQ3

K18S03Q 2018 SQ3 (small asteroid, H=22.4 ~112m) from program code 5 via ESA Optical Ground Station (ESA OGS) (Sept. 19.17-19p3 & 20.16-17p3)

<< DOU on 20 September '20 >> MPEC 2020-S116 - "12:08 UT" - Daily Orbit Update

Observations of risk-listed objects
K20S01O 2020 SO1 (small asteroid, arc=3 days, H=27.2 ~12m, close passer, NHATS target) from Xingming Obs. #3 (Sept. 19.75-76p4), Visnjan Obs. (Sept. 19.91p5), Paus Obs. (Sept. 19.93-95p3), Clixby Obs. (Sept. 19.95p3), Northolt Branch Obs. (Sept. 19.95-97p2), Castelmartini Obs. (Sept. 19.97-98p5), program code 2 via ESA Optical Ground Station (ESA OGS) (Sept. 20.01p3), and Dettelbach Vineyard Obs. (Sept. 20.06-07p3)
K20S00P 2020 SP (small asteroid, arc=4 days, H=27.1 ~13m, close passer, NHATS target) from ESA OGS/code 4 (Sept. 18.94-95p3) and ESA OGS/code 2 (Sept. 19.85-87p2)
K20S00C 2020 SC (small asteroid, arc=3 days, H=26.7 ~15m, close passer) from ESA OGS/code 2 (Sept. 20.02-03p3) and Steward Mt. Lemmon Sta. (Sept. 20.34-36p3)
K20R06M 2020 RM6 (small asteroid, Q=4.260 AU, arc=10 days, H=24.8 ~37m) from ESA OGS/code 4 (Sept. 19.92-94p2)
K20R04R 2020 RR4 (small asteroid, Q=4.331 AU, arc=7 days, H=25.9 ~22m, close passer) from UH/Tholen NEO Follow-Up 2.24m Telescope (Sept. 16.47-48p2 at G=22.41-65)
K20Q01N 2020 QN1 (small asteroid, arc=51 days, H=23.1 ~81m, NHATS target) from ESA OGS/code 4 (Sept. 19.88-90p3)
Observations of recently (no longer) risk-listed objects
K20R00B 2020 RB (i=59.2°, Q=5.511 AU, arc=16 days, H=19.1 ~513m) from Transit Dreams Obs. (Sept. 8.08-09p3)
Observations of close-passing objects
K20S01M 2020 SM1 (arc=1 day, H=26.2 ~19m, NHATS target) from Xingming Obs. #3 (Sept. 19.76p5), Northolt Branch Obs. (Sept. 19.89-90p3), and ESA OGS/code 2 (Sept. 19.90-91p6)
K20S00N 2020 SN (arc=2 days, H=24.6 ~41m) from Tony Evans via Slooh.com Chile Obs. (Sept. 19.12-14p3)
K20R07Y 2020 RY7 (arc=7 days, H=26.7 ~15m) from Great Shefford Obs. (Sept. 19.98-01p4)
K20R07W 2020 RW7 (arc=4 days, H=25.2 ~31m) from Mt. John Obs. (Sept. 19.64-65p3)
K20R07A 2020 RA7 (arc=5 days, H=27.0 ~13m, NHATS target) from Steward Mt. Lemmon Sta. (Sept. 20.26p4)
K20R06Q 2020 RQ6 (arc=6 days, H=27.6 ~10m, NHATS target) from Steward Mt. Lemmon Sta. (Sept. 20.32p4)
K20R06A 2020 RA6 (arc=12 days, H=26.0 ~21m) from HOB Obs. (Sept. 16.97-98p2)
K20R00J 2020 RJ (arc=5 days, H=26.0 ~21m) from Transit Dreams Obs. (Sept. 8.03-04p3)
K20P07M 2020 PM7 (Q=4.014 AU, arc=2 opp, H=22.3 ~117m) from QOS Obs. (Sept. 18.79p3 & 19.86-87p3), Dettelbach Vineyard Obs. (Sept. 19.78p3), and BAS Obs. (Sept. 19.89-90p3)
Observation campaigns (NHATS targets, radar support)
K20R07U 2020 RU7 (arc=5 days, H=25.4 ~28m, NHATS) from Steward Mt. Lemmon Sta. (Sept. 20.21p4)
K20R03T 2020 RT3 (arc=10 days, H=26.2 ~19m, NHATS) from Steward Mt. Lemmon Sta. (Sept. 20.32p4)
K20R02R 2020 RR2 (arc=10 days, H=25.4 ~28m, NHATS) from Steward Mt. Lemmon Sta. (Sept. 20.21p4)
K20Q03Y 2020 QY3 (arc=31 days, H=24.8 ~37m, NHATS) from Mt. John Obs. (Sept. 19.52-53p4)
K20P01X 2020 PX1 (arc=40 days, H=23.7 ~62m, NHATS) from MLS (Sept. 19.24-25p3)
K20L00R 2020 LR (arc=100 days, H=24.0 ~54m, NHATS) from MLS (Sept. 19.29-30p3)
-- NHATS target table
Observations of small (H>22.0) & smallish (21.7<H<=22.0) asteroids
K20S01A 2020 SA1 (arc=3 days, H=25.8 ~23m) from Steward Mt. Lemmon Sta. (Sept. 20.38p4 at G=20.4-22.1)
K20S00L 2020 SL (arc=15 days, H=22.7 ~98m) from the Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) (Sept. 18.28p4)
K20S00F 2020 SF (arc=4 days, H=24.5 ~43m) from Steward Mt. Lemmon Sta. (Sept. 20.33p4)
K20R07X 2020 RX7 (arc=9 days, H=25.2 ~31m) from MLS (Sept. 19.36-38p4)
K20R07C 2020 RC7 (arc=4 days, H=25.9 ~22m) from Mt. John Obs. (Sept. 19.64p4)
K20R06W 2020 RW6 (arc=5 days, H=23.7 ~62m) from Mt. John Obs. (Sept. 19.66p3)
K20R06G 2020 RG6 (arc=6 days, H=23.7 ~62m) from Steward Mt. Lemmon Sta. (Sept. 20.22p4)
K20R06F 2020 RF6 (arc=6 days, H=23.5 ~68m) from Dax Obs. (Sept. 15.89-90p3) and Mt. John Obs. (Sept. 19.52p3)
K20R05D 2020 RD5 (arc=7 days, H=24.1 ~51m) from Dettelbach Vineyard Obs. (Sept. 20.04-05p3)
K20R04T 2020 RT4 (arc=8 days, H=25.3 ~29m) from Steward Mt. Lemmon Sta. (Sept. 20.42-43p4)
K20R04F 2020 RF4 (arc=9 days, H=24.4 ~45m) from Mt. John Obs. (Sept. 19.59p3) and Steward Mt. Lemmon Sta. (Sept. 20.32p4)
K20R03X 2020 RX3 (Q=4.406 AU, arc=10 days, H=22.4 ~112m) from Steward Mt. Lemmon Sta. (Sept. 20.39-41p4)
K20R03V 2020 RV3 (arc=10 days, H=24.2 ~49m) from Steward Mt. Lemmon Sta. (Sept. 20.33-34p4)
K20R03S 2020 RS3 (q=0.344 AU, arc=10 days, H=22.8 ~93m) from Steward Mt. Lemmon Sta. (Sept. 20.33p4)
K20R03L 2020 RL3 (arc=10 days, H=24.8 ~37m) from Steward Mt. Lemmon Sta. (Sept. 20.23-25p4)
K20R02M 2020 RM2 (arc=11 days, H=23.8 ~59m) from Mt. John Obs. (Sept. 19.42p3)
K20R02L 2020 RL2 (Q=4.132 AU, arc=10 days, H=24.7 ~39m) from Steward Mt. Lemmon Sta. (Sept. 20.21p4)
K20R01Q 2020 RQ1 (Q=5.593 AU, arc=13 days, H=23.2 ~78m) from the Catalina Sky Survey (CSS) (Sept. 19.28-30p4)
K20R00F 2020 RF (Q=4.190 AU, arc=23 days, H=22.2 ~123m) from Transit Dreams Obs. (Sept. 8.13-14p3) and Dettelbach Vineyard Obs. (Sept. 20.12-13p3)
K20Q07L 2020 QL7 (Q=4.617 AU, arc=31 days, H=22.1 ~129m) from ATLAS Mauna Loa (Sept. 19.37-39p4)
K20Q06V 2020 QV6 (q=0.318 AU, arc=20 days, H=22.3 ~117m) from Transit Dreams Obs. (Sept. 3.11-12p3)
K20Q06R 2020 QR6 (arc=23 days, H=22.5 ~107m) from MLS (Sept. 19.33-35p4)
K20Q04O 2020 QO4 (arc=26 days, H=22.1 ~129m) from Transit Dreams Obs. (Sept. 3.13-15p3)
K20P05H 2020 PH5 (arc=39 days, H=22.3 ~117m) from Mt. John Obs. (Sept. 19.43p4)
K20O03M 2020 OM3 (arc=69 days, H=24.5 ~43m) from MLS (Sept. 19.34-35p4 at G=21.3-22.3)
K19R03E 2019 RE3 (arc=2 opp, H=22.7 ~98m) from PS1 (Sept. 19.43-44p2)
K18R03V 2018 RV3 (arc=4 opp, H=23.0 ~85m) from Dettelbach Vineyard Obs. (Sept. 19.86p2)
K13Q10L 2013 QL10 (arc=2 opp, H=22.8 ~93m) from MLS (Sept. 19.26-28p4)
K12S32H 2012 SH32 (arc=2 opp, H=22.2 ~123m) from Dettelbach Vineyard Obs. (Sept. 19.88-89p3)
K09Q36C 2009 QC36 (arc=3 opp, H=22.2 ~123m) from PS1 (Sept. 19.60-62p3 at w=21.8-22.3)
K20R07T 2020 RT7 (q=0.207 AU, Q=4.659 AU, arc=5 days, H=21.8 ~148m) from Mt. John Obs. (Sept. 19.65p3)
K20R03A 2020 RA3 (arc=11 days, H=22.0 ~135m) from Steward Mt. Lemmon Sta. (Sept. 20.41-43p4)
K20P04M 2020 PM4 (arc=35 days, H=21.9 ~141m) from MLS (Sept. 19.34-35p3)
K20M00S 2020 MS (arc=94 days, H=21.9 ~141m) from Mt. John Obs. (Sept. 19.54-55p3)
Observations of other objects
K20S01G 2020 SG1 (arc=3 days, H=19.8 ~371m) from Steward Mt. Lemmon Sta. (Sept. 20.21-22p4)
K20S00B 2020 SB (Q=0.988 AU, arc=3 days, H=20.3 ~295m) from Landehen Obs. (Sept. 17.84p2) and CSS (Sept. 19.13-14p4)
K20R01E 2020 RE1 (i=56.1°, arc=16 days, H=20.6 ~257m) from Landehen Obs. (Sept. 17.87-90p3), Castelmartini Obs. (Sept. 18.92p3 & 19.89-90p3), and Dettelbach Vineyard Obs. (Sept. 19.89-90p3)
K20R00R 2020 RR (i=39.1°, arc=12 days, H=21.3 ~186m) from Transit Dreams Obs. (Sept. 7.18-20p3)
K20R00E 2020 RE (arc=25 days, H=20.3 ~295m) from Dettelbach Vineyard Obs. (Sept. 19.79p3)
K20Q06U 2020 QU6 (arc=23 days, H=18.3 ~741m) from ATLAS Mauna Loa (Sept. 19.35-37p4)
K20Q04M 2020 QM4 (arc=32 days, H=18.6 ~645m) from Dettelbach Vineyard Obs. (Sept. 20.09-10p3)
K20Q04H 2020 QH4 (i=55.6°, Q=6.388 AU, arc=19 days, H=19.7 ~389m) from Transit Dreams Obs. (Sept. 3.04-05p3)
K20Q03T 2020 QT3 (Q=4.294 AU, arc=32 days, H=19.5 ~426m) from Mt. John Obs. (Sept. 19.40-41p3)
K20Q02W 2020 QW2 (arc=32 days, H=20.5 ~269m) from MLS (Sept. 19.21-23p4)
K20Q01M 2020 QM1 (arc=33 days, H=21.3 ~186m) from Mt. John Obs. (Sept. 19.61-62p3)
K20Q00M 2020 QM (arc=42 days, H=20.9 ~224m) from Mt. John Obs. (Sept. 19.35-36p4)
K20P05C 2020 PC5 (Q=4.177 AU, arc=37 days, H=18.4 ~708m) from Castelmartini Obs. (Sept. 18.92-93p3 & 19.90p3), MLS (Sept. 19.34-35p4), and Dettelbach Vineyard Obs. (Sept. 19.90-91p3)
K20P04X 2020 PX4 (arc=37 days, H=21.3 ~186m) from the Zwicky Transient Facility (ZTF) (Sept. 19.27-29p2 & 19.41p1) and MLS (Sept. 19.29-30p4)
K20P01Y 2020 PY1 (arc=40 days, H=20.5 ~269m) from Mt. John Obs. (Sept. 19.33-34p4)
K20P01D 2020 PD1 (Q=4.136 AU, arc=89 days, H=19.3 ~467m) from Lumezzane Obs. (Sept. 15.02p4), MLS (Sept. 19.38-40p4), ATLAS Haleakala (Sept. 19.45-46p4), and Dettelbach Vineyard Obs. (Sept. 19.97-98p3)
K20O07S 2020 OS7 (Q=4.462 AU, arc=64 days, H=20.2 ~309m) from Mt. John Obs. (Sept. 19.36-37p3)
K20O07K 2020 OK7 (arc=52 days, H=21.7 ~155m) from Steward Mt. Lemmon Sta. (Sept. 20.27-32p4)
K20O06X 2020 OX6 (arc=51 days, H=21.3 ~186m) from Mt. John Obs. (Sept. 19.60-61p3)
K20O06T 2020 OT6 (arc=52 days, H=20.1 ~323m) from Mt. John Obs. (Sept. 19.44-45p4)
K20O02A 2020 OA2 (arc=84 days, H=21.7 ~155m) from MLS (Sept. 19.28-30p4)
K20M04C 2020 MC4 (arc=2 opp, H=21.4 ~178m) from MLS (Sept. 19.31-32p4)
K20M03L 2020 ML3 (arc=3 opp, H=20.6 ~257m) from PS1 (Sept. 19.36-39p4)
K20M00P 2020 MP (arc=92 days, H=20.6 ~257m) from Transit Dreams Obs. (Sept. 3.07-09p3)
K20L03B 2020 LB3 (arc=96 days, H=19.6 ~407m) from ZTF (Sept. 19.25p2 & 19.32-33p2) and Castelmartini Obs. (Sept. 19.87-88p3)
K20H08P 2020 HP8 (arc=5 opp, H=20.3 ~295m) from Dettelbach Vineyard Obs. (Sept. 19.94-95p3)
K20H08O 2020 HO8 (arc=147 days, H=21.4 ~178m) from Steward Mt. Lemmon Sta. (Sept. 20.15-16p4)
K20A00K 2020 AK (arc=264 days, H=19.2 ~490m) from PS2 (Sept. 18.34-37p3)
K16T56Z 2016 TZ56 (i=60.6°, arc=4 opp, H=19.3 ~467m) from MLS (Sept. 19.43-45p4)
K16N38V 2016 NV38 (Q=4.020 AU, arc=2 opp, H=18.6 ~645m) from QOS Obs. (Sept. 19.08-09p13 & 19.97-98p13) and Dettelbach Vineyard Obs. (Sept. 20.08p2)
K16E85D 2016 ED85 (Q=5.064 AU, arc=3 opp, H=17.7 ~977m) from Northolt Branch Obs. (Sept. 18.95-96p3), QOS Obs. (Sept. 19.07-08p15 & 19.95-96p14), and MLS (Sept. 19.45-47p4)
K13U14X 2013 UX14 (arc=4 opp, H=18.2 ~776m) from SATINO-1 (Sept. 16.11p8), ATLAS Mauna Loa (Sept. 19.49-52p4), QOS Obs. (Sept. 19.99-00p8), and Dettelbach Vineyard Obs. (Sept. 20.08p5)
K13TE4V 2013 TV144 (arc=3 opp, H=20.7 ~245m) from PS2 (Sept. 19.38-41p3)
K13T05S 2013 TS5 (i=54.3°, arc=4 opp, H=19.2 ~490m) from PS1 (Sept. 19.55-57p3)
K13P06Y 2013 PY6 (arc=4 opp, H=19.3 ~467m) from Castelmartini Obs. (Sept. 19.94p3), Dettelbach Vineyard Obs. (Sept. 19.96-97p3), and Pin Oak Obs. (Sept. 20.19p1, 20.24p1 & 20.28p1)
K12D08P 2012 DP8 (arc=5 opp, H=19.8 ~371m) from Northolt Branch Obs. (Sept. 18.89-90p4), CSS (Sept. 19.33-34p3), QOS Obs. (Sept. 19.90-92p6), Dettelbach Vineyard Obs. (Sept. 20.01p3), and Pin Oak Obs. (Sept. 20.22p1 & 20.27-30p2)
K11G27O 2011 GO27 (arc=4 opp, H=18.9 ~562m) from CSS (Sept. 19.37-38p4) and Dettelbach Vineyard Obs. (Sept. 20.11-12p3)
K10JF3V 2010 JV153 (arc=3 opp, H=19.7 ~389m) from ATLAS Mauna Loa (Sept. 19.33-36p4)
K07VD7X 2007 VX137 (arc=5 opp, H=18.5 ~676m) from Lumezzane Obs. (Sept. 15.04p4) and Dettelbach Vineyard Obs. (Sept. 19.98-99p6)
K05Q10S 2005 QS10 (arc=4 opp, H=18.8 ~589m) from ATLAS Mauna Loa (Sept. 19.36-38p4)
K04Q03D 2004 QD3 (arc=4 opp, H=19.4 ~446m) from Dettelbach Vineyard Obs. (Sept. 19.80-81p3)
K02G08Z 2002 GZ8 (Q=4.633 AU, arc=4 opp, H=18.2 ~776m) from MLS (Sept. 19.48-49p4)
K00T28U 2000 TU28 (arc=3 opp, H=20.7 ~245m) from ZTF (Sept. 17.37p1) and PS1 (Sept. 19.46-50p4)
K00P27Q 2000 PQ27 (arc=3 opp, H=19.9 ~355m) from CSS (Sept. 19.32-34p4) and Dettelbach Vineyard Obs. (Sept. 19.99-00p3)
g8086 428086 2006 NM from Transit Dreams Obs. (Sept. 4.22-23p3)
c2625 382625 2002 PC130 from Transit Dreams Obs. (Sept. 3.27-28p3)
D6900 136900 1998 HL49 from Transit Dreams Obs. (Sept. 3.19-21p3)
A5140 105140 2000 NL10 from Transit Dreams Obs. (Sept. 3.17-18p3)
90147 90147 2002 YK14 from Transit Dreams Obs. (Sept. 4.19-20p3)
85804 85804 1998 WQ5 from Transit Dreams Obs. (Sept. 3.24-26p3)
23187 23187 2000 PN9 from Transit Dreams Obs. (Sept. 3.22-23p3)
04947 4947 Ninkasi (1988 TJ1) from Transit Dreams Obs. (Sept. 4.20-22p3)

MPEC 2020-S115 - "11:55 UT" - 2020 SB2

K20S02B 2020 SB2 (small asteroid, H=23.71 ~61m) was picked up at 0558 UT on 18 Sept. by PS1, observing it at Sept. 18.25-29p3. This detection was confirmed by KLENOT/code 1 (Sept. 18.82p2), Visnjan Obs. (Sept. 18.91-92p3), Astronomical Research Obs. Westfield (Sept. 19.05-07p2 & 20.05-06p4), Sandlot Obs. (Sept. 19.12-16p3), Steward Mt. Lemmon Sta. (Sept. 19.13p4 & 20.20p2), and Farpoint Obs. (Sept. 19.23-25p3 at R=20.3-22.5).

MPEC 2020-S114 - "11:51 UT" - 2020 SA2

K20S02A 2020 SA2 (Earth MOID=1.7 LD, H=28.1 ~8m) was picked up at 0842 UT on 19 Sept. by MLS, observing it at Sept. 19.36-37p2. This detection was confirmed by Steward Mt. Lemmon Sta. (Sept. 19.44-45p4 & 20.25-26p3), Xingming Obs. #3 (Sept. 19.75p2), Paus Obs. (Sept. 19.84p2), Visnjan Obs. (Sept. 19.86p3), ESA OGS/code 2 (Sept. 19.91p2), Great Shefford Obs. (Sept. 19.91-92p4), San Marcello Pistoiese Obs. (Sept. 19.99p2), and ARO Westfield (Sept. 20.18-19p4).

MPEC 2020-S113 - "11:47 UT" - 2020 SZ1

K20S01Z 2020 SZ1 (small asteroid, H=25.7 ~25m) was picked up at 0845 UT on 18 Sept. by MLS, observing it at Sept. 18.36-38p4. This detection was confirmed by Steward Mt. Lemmon Sta. (Sept. 18.44p4, 19.26-27p4 & 20.30-32p4), Visnjan Obs. (Sept. 19.01p3), ARO Westfield (Sept. 19.25-26p3 & 20.24p3), Sandlot Obs. (Sept. 19.27-29p3 & 20.25-29p3), Xingming Obs. #3 (Sept. 19.76-77p3), and Great Shefford Obs. (Sept. 19.96-97p3).

MPEC 2020-S112 - "11:45 UT" - 2020 SY1

K20S01Y 2020 SY1 (small asteroid, Q=4.358 AU, H=23.5 ~68m) was picked up at 0839 UT on 17 Sept. by PS1, observing it at Sept. 17.36-40p3 at w=22.02-29 and 18.32-35p4 at w=21.89-22.30. This detection was confirmed by CSS-Kuiper (Sept. 18.25-27p4 at G=21.7-22.2), ARO Westfield (Sept. 19.23-25p3 at V=21.8-22.1 & 20.22-23p3 at V=22.2-4), and MLS (Sept. 19.33-35p2).

MPEC 2020-S111 - "11:43 UT" - 2020 SX1

K20S01X 2020 SX1 (small asteroid, H=24.9 ~35m) was picked up at 0959 UT on 17 Sept. by MLS, observing it at Sept. 17.42-43p4, 18.47p3, and 19.40-41p3. This detection was confirmed by CSS-Kuiper (Sept. 17.46-47p4), Visnjan Obs. (Sept. 17.95-96p3), ARO Westfield (Sept. 20.31p2 at V=22.0-22.1), and Steward Mt. Lemmon Sta. (Sept. 20.36-38p4).

MPEC 2020-S110 - "11:42 UT" - 2020 RZ9

K20R09Z 2020 RZ9 (Q=4.184 AU, H=21.1 ~204m) was picked up at 1122 UT on 14 Sept. by PS1, observing it at Sept. 14.47-51p4 at w=21.67-22.20, 16.53-56p3 at G=21.55-66, and 18.54-60p3 at w=21.71-22.07. This detection was confirmed by PS2 (Sept. 14.54-55p2 at G=21.13-22.38), R. Wainscoat on Mauna Kea (Sept. 16.58p3), and Visnjan Obs. (Sept. 20.01-02p3).

MPEC 2020-S109 - "11:40 UT" - 2020 SW1

K20S01W 2020 SW1 (small asteroid, H=23.1 ~81m) was picked up at 0732 UT on 18 Sept. by PS1, observing it at Sept. 18.31-35p4 at w=21.90-22.26. This detection was confirmed by PS2 (Sept. 12.32-36p4 at G=21.72-22.46), ARO Westfield (Sept. 19.15-17p2 at V=22.0-22.2 & 20.15-16p3 at V=22.2-3), and MLS (Sept. 19.33-35p4 at G=22.3).

MPEC 2020-S108 - "11:35 UT" - 2015 FR432

K15Fh2R 2015 FR432 (H=20.4 ~282m) was picked up at 1125 UT on 21 March 2015 by PS1, observing it at 2015 March 21.48-51p2, 2015 March 22.45-49p4, 2015 May 18.34-37p3, and 2015 May 19.28-32p4. This detection was confirmed by the Spacewatch 0.9m telescope (2015 March 28.36-39p3), MLS (2015 April 9.30-32p8), and CSS (2015 April 15.30-31p4 & 2015 April 20.29-31p3).

MPEC 2020-S107 - "11:32 UT" - 2020 ST1

K20S01T 2020 ST1 (H=21.7 ~155m) was picked up at 0633 UT on 18 Sept. by MLS, observing it at Aug. 27.25-26p3, Sept. 7.36-39p4, and 18.27-29p4. This detection was confirmed by PS2 (Sept. 6.47-51p4), CSS-Kuiper (Sept. 18.41-42p4), KLENOT/code 1 (Sept. 18.82p2), ARO Westfield (Sept. 19.08-09p3 & 20.07-08p3), Sandlot Obs. (Sept. 19.18-20p3 & 20.19-23p2), Farpoint Obs. (Sept. 19.30-33p3), and Steward Mt. Lemmon Sta. (Sept. 20.13-14p4).

MPEC 2020-S106 - "11:29 UT" - 2020 SR1

K20S01R 2020 SR1 (small asteroid, Earth MOID=2.1 LD, H=22.1 ~129m) was picked up at 1102 UT on 18 Sept. by PS1, observing it at 2013 May 10.26-27p3 at G=22.45-23.02, 2015 Nov. 7.37p1 at G=22.60, Jan. 24.50-53p4 at G=22.63-23.10, and Sept. 18.46-50p3 at w=21.77-86. This detection was confirmed by MLS (Aug. 24.27-28p2), PS2 (Sept. 9.44-48p4 at G=21.12-22.84), and ARO Westfield (Sept. 19.14-16p3 at V=21.8-22.2 & 20.12-14p3 at V=21.8-22.2).

MPEC 2020-S105 - "03:38 UT" - Comet C/2020 S2 (Panstarrs)

CK20S020 C/2020 S2 (Panstarrs) (Centaur, q=1.756 AU, Q=18.504 AU, TP=2020 Dec. 21.86345 TT) was picked up at 0749 UT on 16 Sept. by PS1, observing it at Sept. 16.33-35p3 and 17.53-58p4. This detection was confirmed by PS2 (Aug. 19.40-44p2), MLS (Sept. 6.35-36p3 & 11.25-26p3), Schiaparelli Obs. (Sept. 16.97-02p3), McDonald Obs. (Sept. 17.14-15p3 & 18.17-18p3), Sandlot Obs. (Sept. 17.19-24p3), Sato/iTelObs-Mayhill (Sept. 17.29-30p3), R. Wainscoat/Mauna Kea (Sept. 17.36p3), Visnjan Obs. (Sept. 18.81-83p4), and KLENOT/code 1 (Sept. 18.84-85p4).

Observers on 20 September '20

A total of 57 observers appear in today's MPECs.

Code	Observer / observatory
`A44`	Altschwendt Obs. in Austria, 2 in MPECs 2020-S120 & 2020-S121 -- 2020 SJ2, 2020 SH2
`H21`	Astronomical Research Obs. Westfield in Illinois, 8 in MPECs 2020-S106, 2020-S107, 2020-S109, 2020-S111, 2020-S112, 2020-S113, 2020-S114 & 2020-S115 -- 2020 SZ1, 2020 SY1, 2020 SX1, 2020 SW1, 2020 ST1, 2020 SR1, 2020 SB2, 2020 SA2
`T05`	ATLAS Haleakala in Hawaii, 1 in MPEC 2020-S116 -- 2020 PD1
`T08`	ATLAS Mauna Loa in Hawaii, 7 in MPECs 2020-S116, 2020-S119 & 2020-S120 -- 2020 SH2, C/2020 S3, 2020 QU6, 2020 QL7, 2013 UX14, 2010 JV153, 2005 QS10
`G17`	BAS Obs., 1 in MPEC 2020-S116 -- 2020 PM7
`160`	Castelmartini Obs. in Italy, 5 in MPEC 2020-S116 -- 2020 SO1, 2020 RE1, 2020 PC5, 2020 LB3, 2013 PY6
`703`	Catalina Sky Survey (CSS) in Arizona, 6 in MPECs 2020-S108 & 2020-S116 -- 2020 SB, 2020 RQ1, 2015 FR432, 2012 DP8, 2011 GO27, 2000 PQ27
`V06`	Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) in Arizona, 4 in MPECs 2020-S107, 2020-S111, 2020-S112 & 2020-S116 -- 2020 SY1, 2020 SX1, 2020 ST1, 2020 SL
`970`	Chelmsford Obs. in England, 1 in MPEC 2020-S119 -- C/2020 S3
`Z99`	Clixby Obs. in England, 1 in MPEC 2020-S116 -- 2020 SO1
`958`	Dax Obs. in France, 1 in MPEC 2020-S116 -- 2020 RF6
`K87`	Dettelbach Vineyard Obs. in Germany, 20 in MPEC 2020-S116 -- 2020 SO1, 2020 RF, 2020 RE1, 2020 RE, 2020 RD5, 2020 QM4, 2020 PM7, 2020 PD1, 2020 PC5, 2020 HP8, 2018 RV3, 2016 NV38, 2013 UX14, 2013 PY6, 2012 SH32, 2012 DP8, 2011 GO27, 2007 VX137, 2004 QD3, 2000 PQ27
`J042`	program code 2 via ESA Optical Ground Station (ESA OGS) in the Canary Islands, 5 in MPECs 2020-S114 & 2020-S116 -- 2020 SP, 2020 SO1, 2020 SM1, 2020 SC, 2020 SA2
`J044`	program code 4 via ESA Optical Ground Station (ESA OGS) in the Canary Islands, 4 in MPECs 2020-S116 & 2020-S119 -- 2020 SP, C/2020 S3, 2020 RM6, 2020 QN1
`J045`	program code 5 via ESA Optical Ground Station in the Canary Islands, 1 in MPEC 2020-S117 -- 2018 SQ3
`734`	Farpoint Obs. in Kansas, 2 in MPECs 2020-S107 & 2020-S115 -- 2020 ST1, 2020 SB2
`595`	Farra d'Isonzo Obs. in Italy, 2 in MPECs 2020-S120 & 2020-S121 -- 2020 SJ2, 2020 SH2
`L34`	Galhassin Robotic Telescope, 2 in MPECs 2020-S120 & 2020-S121 -- 2020 SJ2, 2020 SH2
`K88`	GINOP-KHK in Hungary, 1 in MPEC 2020-S119 -- C/2020 S3
`J95`	Great Shefford Obs. in England, 6 in MPECs 2020-S113, 2020-S114, 2020-S116, 2020-S120, 2020-S121 & 2020-S122 -- 2020 SZ1, 2020 SK2, 2020 SJ2, 2020 SH2, 2020 SA2, 2020 RY7
`A17`	Guidestar Obs. in Germany, 1 in MPEC 2020-S121 -- 2020 SJ2
`L63`	HOB Obs., 1 in MPEC 2020-S116 -- 2020 RA6
`C43`	Hoyerswerda Obs. in Germany, 1 in MPEC 2020-S121 -- 2020 SJ2
`H06`	iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2020-S119 -- C/2020 S3
`H06\|`	Hidetaka Sato in Japan via iTelescope Obs. Mayhill in New Mexico, 2 in MPECs 2020-S105 & 2020-S119 -- C/2020 S3, C/2020 S2
`Q62`	iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2020-S119 -- C/2020 S3
`2461`	program code 1 via KLENOT in the Czech Republic, 6 in MPECs 2020-S105, 2020-S107, 2020-S115, 2020-S120, 2020-S121 & 2020-S122 -- 2020 ST1, 2020 SK2, 2020 SJ2, 2020 SH2, 2020 SB2, C/2020 S2
`Z43`	Landehen Obs., 2 in MPEC 2020-S116 -- 2020 SB, 2020 RE1
`130`	Lumezzane Obs. in Italy, 2 in MPEC 2020-S116 -- 2020 PD1, 2007 VX137
`568^`	R. Wainscoat on Mauna Kea in Hawaii, 2 in MPECs 2020-S105 & 2020-S110 -- C/2020 S2, 2020 RZ9
`711`	McDonald Obs. in Texas, 1 in MPEC 2020-S105 -- C/2020 S2
`V01`	Mountainville Obs. in Utah, 1 in MPEC 2020-S119 -- C/2020 S3
`474`	Mt. John Obs. in New Zealand, 17 in MPEC 2020-S116 -- 2020 RW7, 2020 RW6, 2020 RT7, 2020 RM2, 2020 RF6, 2020 RF4, 2020 RC7, 2020 QY3, 2020 QT3, 2020 QM1, 2020 QM, 2020 PY1, 2020 PH5, 2020 OX6, 2020 OT6, 2020 OS7, 2020 MS
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 28 in MPECs 2020-S105, 2020-S106, 2020-S107, 2020-S108, 2020-S109, 2020-S111, 2020-S112, 2020-S113, 2020-S114, 2020-S116, 2020-S121, 2020-S122 & 2020-S123 -- 2020 SZ1, 2020 SY1, 2020 SX1, 2020 SW1, 2020 ST1, 2020 SR1, 2020 SL2, 2020 SK2, 2020 SJ2, 2020 SA2, C/2020 S2, 2020 RX7, 2020 QW2, 2020 QR6, 2020 PX4, 2020 PX1, 2020 PM4, 2020 PD1, 2020 PC5, 2020 OM3, 2020 OA2, 2020 MC4, 2020 LR, 2016 TZ56, 2016 ED85, 2015 FR432, 2013 QL10, 2002 GZ8
`C47`	Nonndorf Obs. in Austria, 1 in MPEC 2020-S121 -- 2020 SJ2
`J69`	North Obs. in England, 2 in MPECs 2020-S120 & 2020-S121 -- 2020 SJ2, 2020 SH2
`Z80`	Northolt Branch Obs. in England, 5 in MPECs 2020-S116 & 2020-S121 -- 2020 SO1, 2020 SM1, 2020 SJ2, 2016 ED85, 2012 DP8
`G34`	Oberfrauendorf Obs. in Germany, 1 in MPEC 2020-S121 -- 2020 SJ2
`F51`	Pan-STARRS 1 (PS1) in Hawaii, 16 in MPECs 2020-S105, 2020-S106, 2020-S108, 2020-S109, 2020-S110, 2020-S112, 2020-S115, 2020-S116, 2020-S118, 2020-S120, 2020-S122 & 2020-S123 -- 2020 SY1, 2020 SW1, 2020 SR1, 2020 SL2, 2020 SK2, 2020 SH2, 2020 SB2, C/2020 S2, 2020 RZ9, 2020 ML3, 2019 RE3, 2017 RM122, 2015 FR432, 2013 TS5, 2009 QC36, 2000 TU28
`F52`	Pan-STARRS 2 (PS2) in Hawaii, 9 in MPECs 2020-S105, 2020-S106, 2020-S107, 2020-S109, 2020-S110, 2020-S116, 2020-S120 & 2020-S122 -- 2020 SW1, 2020 ST1, 2020 SR1, 2020 SK2, 2020 SH2, C/2020 S2, 2020 RZ9, 2020 AK, 2013 TV144
`B49`	Paus Obs. in Spain, 2 in MPECs 2020-S114 & 2020-S116 -- 2020 SO1, 2020 SA2
`V93`	Pin Oak Obs., 2 in MPEC 2020-S116 -- 2013 PY6, 2012 DP8
`L18`	QOS Obs., 5 in MPEC 2020-S116 -- 2020 PM7, 2016 NV38, 2016 ED85, 2013 UX14, 2012 DP8
`L04`	ROASTERR-1 in Romania, 2 in MPECs 2020-S119 & 2020-S121 -- 2020 SJ2, C/2020 S3
`L07`	Salvatore di Giacomo Obs., 1 in MPEC 2020-S119 -- C/2020 S3
`104`	San Marcello Pistoiese Obs. in Italy, 1 in MPEC 2020-S114 -- 2020 SA2
`H36`	Sandlot Obs. in Kansas, 4 in MPECs 2020-S105, 2020-S107, 2020-S113 & 2020-S115 -- 2020 SZ1, 2020 ST1, 2020 SB2, C/2020 S2
`C95`	SATINO-1 in France, 1 in MPEC 2020-S116 -- 2013 UX14
`204`	Schiaparelli Obs. in Italy, 1 in MPEC 2020-S105 -- C/2020 S2
`G409`	B. Lutkenhoner in Germany via Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2020-S119 -- C/2020 S3
`W881`	Tony Evans in Portugal via Slooh.com Chile Obs. in Chile, 1 in MPEC 2020-S116 -- 2020 SN
`W883`	B. Lutkenhoner in Germany via Slooh.com Chile Obs. in Chile, 1 in MPEC 2020-S119 -- C/2020 S3
`691`	Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2020-S108 -- 2015 FR432
`I52`	Steward Obs. Mt. Lemmon Station in Arizona, 28 in MPECs 2020-S107, 2020-S111, 2020-S113, 2020-S114, 2020-S115, 2020-S116, 2020-S121, 2020-S122 & 2020-S123 -- 2020 SZ1, 2020 SX1, 2020 ST1, 2020 SL2, 2020 SK2, 2020 SJ2, 2020 SG1, 2020 SF, 2020 SC, 2020 SB2, 2020 SA2, 2020 SA1, 2020 RX3, 2020 RV3, 2020 RU7, 2020 RT4, 2020 RT3, 2020 RS3, 2020 RR2, 2020 RQ6, 2020 RL3, 2020 RL2, 2020 RG6, 2020 RF4, 2020 RA7, 2020 RA3, 2020 OK7, 2020 HO8
`A71`	Stixendorf Obs. in Austria, 1 in MPEC 2020-S119 -- C/2020 S3
`K62`	Teplice Obs. in the Czech Republic, 3 in MPECs 2020-S120, 2020-S121 & 2020-S122 -- 2020 SK2, 2020 SJ2, 2020 SH2
`W33`	Transit Dreams Obs., 16 in MPEC 2020-S116 -- 2020 RR, 2020 RJ, 2020 RF, 2020 RB, 2020 QV6, 2020 QO4, 2020 QH4, 2020 MP, 90147, 85804, 428086, 382625, 23187, 136900, 105140, 4947
`T12`	UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2020-S116 -- 2020 RR4
`L01`	Visnjan Obs. in Croatia, 11 in MPECs 2020-S105, 2020-S110, 2020-S111, 2020-S113, 2020-S114, 2020-S115, 2020-S116, 2020-S119, 2020-S120, 2020-S121 & 2020-S123 -- 2020 SZ1, 2020 SX1, 2020 SO1, 2020 SL2, 2020 SJ2, 2020 SH2, 2020 SB2, 2020 SA2, C/2020 S3, C/2020 S2, 2020 RZ9
`N88`	Xingming Obs. #3, 4 in MPECs 2020-S113, 2020-S114 & 2020-S116 -- 2020 SZ1, 2020 SO1, 2020 SM1, 2020 SA2
`I41`	Zwicky Transient Facility (ZTF) in southern California, 3 in MPEC 2020-S116 -- 2020 PX4, 2020 LB3, 2000 TU28

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

Impact Risk Monitoring on 20 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 SO1	NEODyS	2304	2092-2118	10	2.17e-06	-7.12	-7.22	0	NEODyS: "Based on 47 optical observations (of which 0 are rejected as outliers) from 2020-09-17.401 to 2020-09-20.076."
2020 SO1	JPL Sentry	1700	2101-2106	2	9.712e-06	-6.46	-6.54	0	JPL: Computed at 07:24 today Pacific time based on 47 observations spanning 2.6744 days (2020-Sep-17.40029 to 2020-Sep-20.0747). Diameter approximately 0.013 km. from weighted mean H=27.13.

2020 SP	NEODyS	2304	2079-2101	4	2.49e-07	-7.95	-8.36	0	NEODyS: "Based on 22 optical observations (of which 0 are rejected as outliers) from 2020-09-16.174 to 2020-09-19.870."
2020 SP	JPL Sentry	1700	2079-2117	14	7.823707e-06	-6.54	-6.89	0	JPL: Computed at 07:27 today Pacific time based on 22 observations spanning 3.6965 days (2020-Sep-16.17272 to 2020-Sep-19.86924). Diameter approximately 0.013 km. from weighted mean H=27.04.

2020 SC	NEODyS	2304	2079-2092	2	3.63e-08	-8.07	-8.12	0	NEODyS: "Based on 70 optical observations (of which 1 are rejected as outliers) from 2020-09-17.452 to 2020-09-20.358."
2020 SC	JPL Sentry	1700	2088-2092	3	1.186137e-07	-7.60	-7.80	0	JPL: Computed at 07:23 today Pacific time based on 70 observations spanning 2.9061 days (2020-Sep-17.450866 to 2020-Sep-20.35697). Diameter approximately 0.016 km. from weighted mean H=26.69.

2020 RB7	JPL Sentry	1700	2105-2117	5	1.860665e-07	-7.90	-8.03	0	JPL: Computed at 08:29 Sept. 18th 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 RM6	NEODyS	2304	R E M O V E D						-

2020 RR4	NEODyS	2304	2081-2082	2	3.69e-07	-6.97	-7.0	0	NEODyS: "Based on 19 optical observations (of which 0 are rejected as outliers) from 2020-09-09.454 to 2020-09-16.477."
2020 RR4	JPL Sentry	1700	2082-2082	1	3.550e-07	-6.93	-6.93	0	JPL: Computed at 07:18 today Pacific time based on 19 observations spanning 7.0230 days (2020-Sep-09.45312 to 2020-Sep-16.476097). Diameter approximately 0.023 km. from weighted mean H=25.87.

2020 QN1	NEODyS	2304	2099-2117	9	3.03e-07	-6.01	-6.19	0	NEODyS: "Based on 45 optical observations (of which 0 are rejected as outliers) from 2020-07-31.389 to 2020-09-19.900."
2020 QN1	JPL Sentry	1700	2099-2119	3	3.0062e-07	-5.98	-6.12	0	JPL: Computed at 07:10 today Pacific time based on 45 observations spanning 50.511 days (2020-Jul-31.38815 to 2020-Sep-19.89921). Diameter approximately 0.080 km. from weighted mean H=23.13.

2019 SU2	JPL Sentry	1700	2095-2096	2	2.4707e-07	-9.23	-9.36	0	JPL: Computed at 07:30 Oct. 1st of 2019 Pacific time based on 16 observations spanning 4.1296 days (2019-Sep-22.37234 to 2019-Sep-26.501941). Diameter approximately 0.003 km. from weighted mean H=30.05.

2012 BP123	JPL Sentry	1700	2021-2117	306	1.3384781e-06	-6.70	-7.31	0	JPL: Computed at 09:34 April 8th of 2017 Pacific time based on 13 observations spanning .91365 days (2012-Jan-31.31538 to 2012-Feb-01.22903). Diameter approximately 0.013 km. from weighted mean H=27.11.

2009 FZ4	JPL Sentry	1700	2020-2116	397	2.3792468e-06	-5.17	-5.89	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 RC20	JPL Sentry	1700	2091-2091	1	1.237e-09	-10.05	-10.05	0	JPL: Computed at 06:36 April 9th of 2017 Pacific time based on 8 observations spanning .85558 days (2007-Sep-14.37291 to 2007-Sep-15.22849). Diameter approximately 0.016 km. from weighted mean H=26.66.

2005 SO1	JPL Sentry	1700	2110-2110	9	3.86933e-06	-5.86	-6.37	0	JPL: Computed at 20:53 April 12th of 2017 Pacific time based on 55 observations spanning 14.180 days (2005-Sep-23.26647 to 2005-Oct-07.44602). Diameter approximately 0.028 km. from weighted mean H=25.41.

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 20 September '20

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

2358	Grabbed MPEC 2020-S120 - 2020 SH2 - see above Grabbed MPEC 2020-S121 - 2020 SJ2 - see above Grabbed MPEC 2020-S122 - 2020 SK2 - see above Grabbed MPEC 2020-S123 - 2020 SL2 - see above
2304	Noted that NEODyS has updated its 2020 QN1 risk assessment - see above Noted that NEODyS has removed 2020 RM6 as an impact risk - see above Noted that NEODyS has updated its 2020 RR4 risk assessment - see above Noted that NEODyS has updated its 2020 SC risk assessment - see above Noted that NEODyS has posted 2020 SO1 as an impact risk - see above Noted that NEODyS has updated its 2020 SP risk assessment - see above Grabbed MPEC 2020-S119 - Comet C/2020 S3 (Erasmus) - see above
1940	Grabbed MPEC 2020-S118 - 2017 RM122 - see above
1700	Noted that JPL Sentry has updated its 2005 SO1 risk assessment - see above Noted that JPL Sentry has updated its 2007 RC20 risk assessment - see above Noted that JPL Sentry has updated its 2009 FZ4 risk assessment - see above Noted that JPL Sentry has updated its 2012 BP123 risk assessment - see above Noted that JPL Sentry has updated its 2019 SU2 risk assessment - see above Noted that JPL Sentry has updated its 2020 QN1 risk assessment - see above Noted that JPL Sentry has updated its 2020 RB7 risk assessment - see above Noted that JPL Sentry has updated its 2020 RR4 risk assessment - see above Noted that JPL Sentry has updated its 2020 SC risk assessment - see above Noted that JPL Sentry has updated its 2020 SO1 risk assessment - see above Noted that JPL Sentry has updated its 2020 SP risk assessment - see above Grabbed MPEC 2020-S106 - 2020 SR1 - see above Grabbed MPEC 2020-S107 - 2020 ST1 - see above Grabbed MPEC 2020-S108 - 2015 FR432 - see above Grabbed MPEC 2020-S109 - 2020 SW1 - see above Grabbed MPEC 2020-S110 - 2020 RZ9 - see above Grabbed MPEC 2020-S111 - 2020 SX1 - see above Grabbed MPEC 2020-S112 - 2020 SY1 - see above Grabbed MPEC 2020-S113 - 2020 SZ1 - see above Grabbed MPEC 2020-S114 - 2020 SA2 - see above Grabbed MPEC 2020-S115 - 2020 SB2 - see above Grabbed MPEC 2020-S116 - Daily Orbit Update - see above Grabbed MPEC 2020-S117 - 2018 SQ3 - see above
0515	Grabbed MPEC 2020-S105 - Comet C/2020 S2 (Panstarrs) - see above

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