2020-02-28 Tracking News

Contents on 28 February '20

IAU Minor Planet Center
- NEOCP Activity -- 30 listings
- New MPECs -- fifteen MPECs
Observers -- 57 observers
Impact Risk Monitoring -- eight objects
Chronology

Asteroid/Comet Connection (A/CC) Resources:

Consolidated Risk Tables - the CRT page
Of 1109 risk-listed objects, 62 have had news in the last 31 days. Updated at 2314 UTC on 28 Feb.
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 28 February '20

The MPC's NEO Confirmation Page has 30 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 30 objects listed. Of these, eleven were "one nighters." So far The Tracking News has counted a total of 49 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 28 February '20

Minor Planet Electronic Circulars

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

MPEC 2020-D120 time-stamped "03:13 UT" - 2020 DP3 - see below
MPEC 2020-D121 time-stamped "03:15 UT" - 2020 DQ3 - see below
MPEC 2020-D122 time-stamped "03:17 UT" - 2020 DR3 - see below
MPEC 2020-D123 time-stamped "03:19 UT" - 2020 DS3 - see below
MPEC 2020-D124 time-stamped "04:47 UT" - 2020 DT3 - see below
MPEC 2020-D125 time-stamped "04:55 UT" - 2020 DU3 - see below
MPEC 2020-D126 time-stamped "05:03 UT" - 2020 DV3 - see below
MPEC 2020-D127 time-stamped "05:09 UT" - 2020 DW3 - see below
MPEC 2020-D128 time-stamped "12:23 UT" - Daily Orbit Update - see below
MPEC 2020-D129 time-stamped "21:02 UT" - 2020 DY3 - see below
MPEC 2020-D130 time-stamped "21:04 UT" - 2020 DZ3 - see below
MPEC 2020-D131 time-stamped "22:29 UT" - 2020 DA4 - see below
MPEC 2020-D132 time-stamped "22:56 UT" - 2020 DB4 - see below
MPEC 2020-D133 time-stamped "22:58 UT" - 2020 DC4 - see below
MPEC 2020-D134 time-stamped "23:00 UT" - 2020 DD4

MPEC 2020-D134 - "23:00 UT" - 2020 DD4

K20D04D 2020 DD4 (small asteroid, Earth MOID=2.5 LD, H=28.3 ~7m) was picked up at 0611 UT on 27 Feb. by the Mt. Lemmon Survey (MLS), observing it at Feb. 27.26-27p3. This detection was confirmed by Steward Obs. Mt. Lemmon Station (Feb. 27.41p3), ESA Optical Ground Station (ESA OGS) (Feb. 27.88p1 & 28.90-91p2), Calar Alto Schmidt (Feb. 27.89-91p3), and Visnjan Obs. (Feb. 28.90-91p4).

MPEC 2020-D133 - "22:58 UT" - 2020 DC4

K20D04C 2020 DC4 (small asteroid, H=25.7 ~25m) was picked up at 0703 UT on 27 Feb. by MLS, observing it at Feb. 27.29-31p4. This detection was confirmed by Steward Mt. Lemmon Sta. (Feb. 27.47p4), ESA OGS (Feb. 27.90-91p3), Robert Holmes via Cerro Tololo Inter-American Obs. (CTIO) (Feb. 28.17-18p3), and Visnjan Obs. (Feb. 28.88-89p3).

MPEC 2020-D132 - "22:56 UT" - 2020 DB4

K20D04B 2020 DB4 (small asteroid, H=25.4 ~28m) was picked up at 0658 UT on 27 Feb. by the Catalina Sky Survey (CSS), observing it at Feb. 27.29-31p4. This detection was confirmed by Steward Mt. Lemmon Sta. (Feb. 27.40p4), Great Shefford Obs. (Feb. 27.95-97p2), ESA OGS (Feb. 27.97p3), Holmes/CTIO (Feb. 28.13-14p3), Farpoint Obs. (Feb. 28.30-32p4), Savelli Obs. (Feb. 28.89-91p3), and Pascoli Obs. (Feb. 28.90-91p3).

MPEC 2020-D131 - "22:29 UT" - 2020 DA4

K20D04A 2020 DA4 (small asteroid, Earth MOID=2.1 LD, H=25.7 ~25m) was picked up at 0438 UT on 27 Feb. by MLS, observing it at Feb. 27.19-21p4. This detection was confirmed by McDonald Obs. (Feb. 27.23-24p3), Jana Pittichova Chesley via Table Mtn. Obs. (Feb. 27.27-28p2), Steward Mt. Lemmon Sta. (Feb. 27.36p4 & 28.16-17p4), Arcadia Obs. (Feb. 27.50-52p3), ROASTERR-1 (Feb. 27.78-79p3), Calar Alto Schmidt (Feb. 27.84-86p3), ESA OGS (Feb. 27.85p3 & 28.90p3), Great Shefford Obs. (Feb. 27.90-91p3), St. Pardon de Conques Obs. (Feb. 27.92-93p3), Northolt Branch Obs. (Feb. 27.94-95p3), Clixby Obs. (Feb. 27.95p3), North Obs. (Feb. 27.95-97p3), Galilei Obs. (Feb. 27.98-99p3), Schiaparelli Obs. (Feb. 28.01-02p2), Squirrel Valley Obs. (Feb. 28.06-08p7), SATINO-1 (Feb. 28.07-08p2), Holmes/CTIO (Feb. 28.08-09p3), Sandlot Obs. (Feb. 28.19-21p4), Farpoint Obs. (Feb. 28.22p4), Dave Balam via Plaskett 1.8m Telescope (Feb. 28.30-31p5), Galhassin Robotic Telescope (Feb. 28.77-79p4), Hoyerswerda Obs. (Feb. 28.80-81p5), Savelli Obs. (Feb. 28.84-85p3), Monte Agliale Obs. (Feb. 28.85-87p3), Farra d'Isonzo Obs. (Feb. 28.86-87p3), Pascoli Obs. (Feb. 28.87p3), Visnjan Obs. (Feb. 28.87p4), Castelmartini Obs. (Feb. 28.88-89p5), GiaGa Obs. (Feb. 28.89-91p3), and Dax Obs. (Feb. 28.89-91p3).

MPEC 2020-D130 - "21:04 UT" - 2020 DZ3

K20D03Z 2020 DZ3 (small asteroid, Earth MOID=2.9 LD, H=25.5 ~27m) was picked up at 0802 UT on 27 Feb. by CSS, observing it at Feb. 27.33-35p4. This detection was confirmed by McDonald Obs. (Feb. 27.40p2), Steward Mt. Lemmon Sta. (Feb. 27.49p4), LCO Siding Spring A (Feb. 27.72p4), ESA OGS (Feb. 28.02p3), Schiaparelli Obs. (Feb. 28.10p2), Farpoint Obs. (Feb. 28.23-24p4), Astronomical Research Obs. Westfield (Feb. 28.31p3), LCO Cerro Tololo C (Feb. 28.34p4), and Savelli Obs. (Feb. 28.86p2).

MPEC 2020-D129 - "21:02 UT" - 2020 DY3

K20D03Y 2020 DY3 (small asteroid, H=24.8 ~37m) was picked up at 0509 UT on 27 Feb. by MLS, observing it at Feb. 27.21-23p4. This detection was confirmed by Steward Mt. Lemmon Sta. (Feb. 27.40p4 & 28.18p4), ESA OGS (Feb. 27.87p2), St. Pardon de Conques Obs. (Feb. 27.97-98p3), Holmes/CTIO (Feb. 28.11-12p4), Sandlot Obs. (Feb. 28.23-24p3), Farpoint Obs. (Feb. 28.33-35p4), and Pascoli Obs. (Feb. 28.84-85p3).

<< DOU on 28 February '20 >> MPEC 2020-D128 - "12:23 UT" - Daily Orbit Update

Observations of risk-listed objects
K20D03M 2020 DM3 (small asteroid, Q=4.301 AU, arc=2 days, H=26.2 ~19m, close passer) from Savelli Obs. (Feb. 27.82-83p3) and Great Shefford Obs. (Feb. 28.00-01p3)
K20D03F 2020 DF3 (small asteroid, i=36.6°, arc=4 days, H=24.1 ~51m, close passer) from ESA OGS (Feb. 28.00p2) and the Spacewatch 0.9m telescope (Feb. 28.21-22p2)
K20D02R 2020 DR2 (arc=8 days, H=18.8 ~589m) from ARO Westfield (Feb. 22.04p4), Tony Evans via Slooh.com Chile Obs. (Feb. 27.12-17p5), ESA OGS (Feb. 27.84p3), and Petit Jean Mtn. South Obs. (PJMSO) (Feb. 28.10-11p6)
K20D02F 2020 DF2 (close passer) from MLS (Feb. 27.23-25p4 at G=21.4-22.5)
K20C03D 2020 CD3 (small asteroid, arc=12 days, H=31.8 ~1m, NHATS target) from UH/Tholen NEO Follow-Up CFH Telescope (Feb. 27.64-65p3 at G=22.73-83)
K20C01Q 2020 CQ1 (small asteroid, arc=22 days, H=28.9 ~6m, close passer, NHATS target) from Marco Micheli via Cerro Paranal (Feb. 27.27-28p7 at G=24.3-8)
K20C01E 2020 CE1 (small asteroid, arc=25 days, H=25.7 ~25m) from Micheli/Paranal (Feb. 27.07-08p3 at G=22.3-23.1)
Observations of close-passing objects
K20D03W 2020 DW3 (arc=1 day, H=28.4 ~7m, NHATS target) from Holmes/CTIO (Feb. 28.15p3) and Farpoint Obs. (Feb. 28.25-26p3)
K20D03V 2020 DV3 (arc=1 day, H=27.8 ~9m) from Holmes/CTIO (Feb. 28.16-17p3)
K20D03S 2020 DS3 (arc=2 days, H=25.9 ~22m, NHATS target) from Holmes/CTIO (Feb. 28.09-10p3) and Steward Mt. Lemmon Sta. (Feb. 28.15-16p3)
K20D03E 2020 DE3 (arc=3 days, H=23.9 ~56m) from CSS (Feb. 27.36-37p3)
K20B01S 2020 BS1 (arc=13 days, H=26.3 ~19m, NHATS target) from Pomona College Table Mtn. Obs. (PCTMO) (Jan. 25.42-45p2)
K20B01B 2020 BB1 from ARO Westfield (Jan. 22.29p4)
K08U95B 2008 UB95 (arc=5 opp, H=24.8 ~37m, NHATS target) from Spacewatch 0.9m (Feb. 28.26p2)
J95C00R 1995 CR from the Spacewatch 1.8m telescope (Feb. 28.22-23p2)
Observation campaigns (NHATS targets, radar support)
K20C03A 2020 CA3 (arc=12 days, H=25.4 ~28m, NHATS) from CSS (Feb. 27.29-31p2) and MLS (Feb. 27.30-31p4)
K20B16C 2020 BC16 (arc=35 days, H=25.1 ~32m, NHATS) from Spacewatch 0.9m (Feb. 28.23-25p3)
K20B11S 2020 BS11 (arc=33 days, H=22.6 ~102m, NHATS) from Spacewatch 0.9m (Feb. 28.18-19p2)
K20B07N 2020 BN7 (arc=33 days, H=23.7 ~62m, NHATS) from UH/Tholen NEO Follow-Up 2.24m Telescope (Feb. 25.66p1 at G=22.08)
K17BC3M 2017 BM123 (NHATS, radar) from ATLAS Mauna Loa (Feb. 27.62-66p5) and QOS Obs. (Feb. 27.86-87p6)
K15R02H 2015 RH2 (arc=4 opp, H=21.9 ~141m, NHATS) from CSS (Feb. 27.42-44p4)
-- NHATS target table -- Planetary radar schedules: Arecibo & Goldstone
Observations of small (H>22.0) & smallish (21.7<H<=22.0) asteroids
K20D03U 2020 DU3 (arc=3 days, H=24.9 ~35m) from Holmes/CTIO (Feb. 28.07p3)
K20D03R 2020 DR3 (arc=2 days, H=26.1 ~20m) from Holmes/CTIO (Feb. 28.12p4)
K20D03Q 2020 DQ3 (arc=2 days, H=25.0 ~34m) from Squirrel Valley Obs. (Feb. 28.11-13p4) and program code "-" (22) via Slooh.com Canary Islands Obs. (Feb. 28.13-16p4)
K20D03P 2020 DP3 (arc=2 days, H=25.9 ~22m) from Holmes/CTIO (Feb. 28.20p2)
K20D02L 2020 DL2 (arc=1 day, H=26.5 ~17m) from Holmes/CTIO (Feb. 21.31-32p3)
K20D01N 2020 DN1 (arc=10 days, H=22.6 ~102m) from MLS (Feb. 27.15-16p4)
K20C01B 2020 CB1 (Q=4.292 AU, arc=31 days, H=25.1 ~32m) from MLS (Feb. 27.32-33p4)
K20B11J 2020 BJ11 (arc=56 days, H=24.8 ~37m) from MLS (Feb. 27.36-37p4)
K20B02W 2020 BW2 (arc=39 days, H=24.5 ~43m) from MLS (Feb. 27.28-29p4)
K20A01Q 2020 AQ1 (arc=16 days, H=22.2 ~123m) from PCTMO (Jan. 15.48-51p2)
K15DK0D 2015 DD200 (arc=2 opp, H=22.8 ~93m) from MLS (Feb. 27.24-25p4)
K15DF5J 2015 DJ155 (arc=2 opp, H=24.1 ~51m) from MLS (Feb. 27.26-27p4)
K11C46X 2011 CX46 (arc=3 opp, H=22.1 ~129m) from CSS (Feb. 27.48-50p3)
K20D03C 2020 DC3 (q=0.332 AU, arc=6 days, H=21.9 ~141m) from Schwarzschild Obs. (Feb. 26.03p3) and Clixby Obs. (Feb. 28.05-06p6)
K19X00G 2019 XG (arc=89 days, H=22.0 ~135m) from the Zwicky Transient Facility (ZTF) (Feb. 26.22-24p2 & 26.35-37p2)
K19A13G 2019 AG13 (arc=4 opp, H=21.9 ~141m) from Pan-STARRS 1 (PS1) (2010 June 29.43-44p2 & 2010 July 1.44p1)
Observations of other objects
K20D03T 2020 DT3 (arc=11 days, H=21.6 ~162m) from Holmes/CTIO (Feb. 28.09-10p3)
K20D02P 2020 DP2 (Q=4.686 AU, arc=7 days, H=21.5 ~170m) from M. Kumrucu-Lohmiller via Slooh.com Canary Islands Obs. (Feb. 27.17-20p4)
K20D02A 2020 DA2 from MLS (Feb. 27.45-47p4)
K20D00X 2020 DX (arc=12 days, H=20.2 ~309m) from QOS Obs. (Feb. 27.89-90p6) and PJMSO (Feb. 28.11-12p6)
K20B15E 2020 BE15 (q=0.168 AU, arc=38 days, H=20.2 ~309m) from MLS (Feb. 27.27-29p4 at G=21.1-22.6)
K20B14X 2020 BX14 (Q=4.828 AU, arc=29 days, H=20.1 ~323m) from MLS (Feb. 27.17-18p4)
K20B14P 2020 BP14 from PJMSO (Feb. 28.06-07p6)
K20B12Z 2020 BZ12 from Swan Hill Obs. (Feb. 27.50p3)
K20B12E 2020 BE12 from ARO Westfield (Feb. 15.36-37p3 at V=21.8-22.1)
K20B11H 2020 BH11 (Q=4.050 AU, arc=78 days, H=21.4 ~178m) from ZTF (Feb. 25.21p1 & 25.26p1)
K20B04A 2020 BA4 (arc=37 days, H=20.3 ~295m) from MLS (Feb. 27.17-18p4)
K20A02Z 2020 AZ2 (arc=52 days, H=21.2 ~195m) from CSS (Feb. 27.33-35p3)
K19X01G 2019 XG1 (Q=4.163 AU, arc=2 opp, H=19.2 ~490m) from ATLAS Mauna Loa (Feb. 27.63-66p5)
K19U00O 2019 UO (Q=4.343 AU, arc=147 days, H=20.1 ~323m) from CSS (Feb. 27.34-35p4)
K19T07H 2019 TH7 (arc=142 days, H=20.7 ~245m) from CSS (Feb. 27.31-33p4) and MLS (Feb. 27.32-33p4)
K19Q06R 2019 QR6 (Q=10.376 AU, arc=181 days, H=19.9 ~355m) from program code 2 via Discovery Channel Telescope (DCT) (Feb. 27.34-35p5 at r=22.5-8)
K19P02R 2019 PR2 (Q=10.374 AU, arc=201 days, H=18.8 ~589m) from DCT/code 2 (Feb. 27.34p6)
K18E02T 2018 ET2 (i=50.1°, arc=3 opp, H=19.1 ~513m) from MLS (Feb. 27.28-29p4)
K18A02G 2018 AG2 (arc=4 opp, H=19.9 ~355m) from MLS (Feb. 27.36-37p4)
K17M04X 2017 MX4 (arc=4 opp, H=20.8 ~234m) from ZTF (Feb. 26.25-29p3 & 27.24-25p2)
K17D15U 2017 DU15 (i=48.0°, arc=3 opp, H=20.8 ~234m) from MLS (Feb. 27.14-16p4)
K16U80T 2016 UT80 (arc=3 opp, H=19.0 ~537m) from PJMSO (Feb. 28.08-09p6)
K16R33W 2016 RW33 (Q=4.051 AU, arc=3 opp, H=19.3 ~467m) from MLS (Feb. 27.40-42p4 at G=20.6-22.3)
K16L09E 2016 LE9 (arc=6 opp, H=17.8 ~933m) from CSS (Feb. 27.31-33p4)
K16F15G 2016 FG15 (Q=4.232 AU, arc=3 opp, H=19.9 ~355m) from Sandlot Obs. (Feb. 28.39-41p2)
K16AE7X 2016 AX147 (arc=4 opp, H=17.8 ~933m) from Spacewatch 0.9m (Feb. 27.17-20p3) and PJMSO (Feb. 28.14-15p6)
K15Bp5T 2015 BT515 (arc=3 opp, H=19.9 ~355m) from MLS (Feb. 27.21-23p4)
K15A00B 2015 AB (arc=3 opp, H=20.1 ~323m) from MLS (Feb. 27.42-44p4)
K13U03R 2013 UR3 (Q=5.097 AU, arc=4 opp, H=17.0 ~1.35 km) from ZTF (Feb. 27.34p1 & 27.47p1)
K13C89L 2013 CL89 (arc=5 opp, H=19.4 ~446m) from CSS (Feb. 27.28-29p3)
K10U07S 2010 US7 (i=55.2°, arc=3 opp, H=18.9 ~562m) from PS1 (2011 June 8.50-52p3)
K10EI1F 2010 EF181 (arc=4 opp, H=19.5 ~426m) from MLS (Feb. 27.24-25p4 at G=21.9-22.1)
K10C55H 2010 CH55 (arc=3 opp, H=19.6 ~407m) from MLS (Feb. 27.34-35p4)
K09F04U 2009 FU4 (arc=4 opp, H=17.8 ~933m) from SATINO-1 (Feb. 26.91-92p2)
K09A16H 2009 AH16 (arc=8 opp, H=17.7 ~977m) from ATLAS Mauna Loa (Feb. 27.64-65p4)
K08E05E 2008 EE5 (i=44.8°, arc=4 opp, H=19.7 ~389m) from CSS (Feb. 27.16-18p4) and PJMSO (Feb. 28.07-08p6)
K06P17Y 2006 PY17 (arc=6 opp, H=19.2 ~490m) from CSS (Feb. 27.49-50p3)
K05S00Q 2005 SQ (arc=4 opp, H=20.2 ~309m) from PJMSO (Feb. 28.13-14p6)
K04R02V 2004 RV2 (arc=3 opp, H=20.7 ~245m) from MLS (Feb. 27.30-31p4)
K04C52H 2004 CH52 (arc=4 opp, H=19.8 ~371m) from CSS (Feb. 27.31-33p4) and MLS (Feb. 27.32-33p4)
K03O03C 2003 OC3 (arc=5 opp, H=18.8 ~589m) from CSS (Feb. 27.14-16p4)
K02P75O 2002 PO75 (arc=5 opp, H=19.1 ~513m) from ARO Westfield (Jan. 5.22p2 at V=22.1)
K00B28O 2000 BO28 (arc=7 opp, H=19.7 ~389m) from CSS (Feb. 27.33-35p4) and Transit Dreams Obs. (Feb. 28.21-23p4)
J99D02B 1999 DB2 (Q=4.893 AU, arc=3 opp, H=18.9 ~562m) from CSS (Feb. 27.36-37p4)
p1523 511523 2014 QS439 from ATLAS Mauna Loa (Feb. 27.46-48p4)
p1243 511243 2014 BS32 from ZTF (Feb. 25.16p1, 25.21p1, 27.14p1, 27.19p1 & 27.28p1)
n2143 492143 2013 OE from CSS (Feb. 27.20-22p3)
m2244 482244 2011 HR from ZTF (Feb. 27.43-46p2)
k3282 463282 2012 HR15 from ATLAS Mauna Loa (Feb. 27.53p2 & 27.58-59p3)
i8818 448818 2011 UU20 from ATLAS Mauna Loa (Feb. 27.46-48p4)
f6231 416231 2003 AJ73 from WISE (Feb. 24.88p1)
f5267 415267 2013 BQ45 from ZTF (Feb. 27.19p1 & 27.26p1)
e2267 402267 2005 QE166 from CSS (Feb. 27.33-35p3)
Z1508 351508 2005 RN33 from ARO Westfield (Feb. 2.41-43p3 at V=22.1)
X8347 338347 2002 XG4 from ZTF (Feb. 25.13-17p2 & 27.13-17p2)
X1792 331792 2003 MT2 from ZTF (Feb. 24.25-28p2, 27.19p1 & 27.26p1)
P0620 250620 2005 GE59 from CSS (Feb. 27.12-14p4)
L4088 214088 2004 JN13 from ZTF (Feb. 24.18p1, 24.24p1, 27.15p1, 27.21p1 & 27.26p1)
H5189 175189 2005 EC224 from CSS (Feb. 27.42-43p3)
G2080 162080 1998 DG16 from ZTF (Feb. 27.23p2 & 27.28p2) and ATLAS Mauna Loa (Feb. 27.47-49p4)
G2038 162038 1996 DH from CSS (Feb. 27.25-26p4)
F4229 154229 2002 JN97 from CSS (Feb. 27.46-48p3)
F2561 152561 1991 RB from CSS (Feb. 27.44-46p4)
E3527 143527 2003 EN16 from CSS (Feb. 27.26-27p3)
D7199 137199 1999 KX4 from ATLAS Mauna Loa (Feb. 27.38-40p4)
D7099 137099 1998 YW3 from ZTF (Feb. 27.51-53p4)
D7064 137064 1998 WP5 from ZTF (Feb. 24.52-53p2 & 27.52-53p2)
D6993 136993 1998 ST49 from ATLAS Mauna Loa (Feb. 27.64-65p4)
B1253 111253 2001 XU10 from ATLAS Mauna Loa (Feb. 27.26-28p4)
A6589 106589 2000 WN107 from CSS (Feb. 27.12-14p3) and ATLAS Haleakala (Feb. 27.27-29p4)
99248 99248 2001 KY66 from ZTF (Feb. 27.15-18p2)
90367 90367 2003 LC5 from ZTF (Feb. 27.33-34p3, 27.51p1 & 27.55p1)
90075 90075 2002 VU94 from CSS (Feb. 27.20-22p4)
65690 65690 1991 DG from CSS (Feb. 27.27-28p4) and Transit Dreams Obs. (Feb. 28.19-20p4)
52768 52768 1998 OR2 from ATLAS Mauna Loa (Feb. 27.46-48p4), PJMSO (Feb. 28.12-13p5), and Transit Dreams Obs. (Feb. 28.16-17p4)
40267 40267 1999 GJ4 from QOS Obs. (Feb. 27.88p10)
36284 36284 2000 DM8 from ZTF (Feb. 26.21-26p5)
35107 35107 1991 VH from PJMSO (Feb. 28.15p6) and Transit Dreams Obs. (Feb. 28.17-19p4)
20255 20255 1998 FX2 from ZTF (Feb. 24.11-13p3 & 27.14-17p3)
18172 18172 2000 QL7 from ZTF (Feb. 27.19p2 & 27.26p2)
15745 15745 Yuliya (1991 PM5) from ZTF (Feb. 27.22p1 & 27.29p1)
11066 11066 Sigurd (1992 CC1) from CSS (Feb. 27.35-37p4)
09400 9400 1994 TW1 from ATLAS Mauna Loa (Feb. 27.23-25p4)
08566 8566 1996 EN from CSS (Feb. 27.27-29p4)
07088 7088 Ishtar (1992 AA) from ZTF (Feb. 25.42p1, 25.48-50p2 & 27.34-35p2)
02329 2329 Orthos (1976 WA) from CSS (Feb. 27.27-29p2)
01866 1866 Sisyphus (1972 XA) from ATLAS Mauna Loa (Feb. 27.39-41p4)

MPEC 2020-D127 - "05:09 UT" - 2020 DW3

K20D03W 2020 DW3 (Earth MOID=2.5 LD, H=28.3 ~7m, NHATS target) was picked up at 0708 UT on 27 Feb. by MLS, observing it at Feb. 27.30-31p4. This detection was confirmed by McDonald Obs. (Feb. 27.35p3), Steward Mt. Lemmon Sta. (Feb. 27.47p4), Great Shefford Obs. (Feb. 27.94p4), St. Pardon de Conques Obs. (Feb. 27.99p3), and ESA OGS (Feb. 27.99p3).

MPEC 2020-D126 - "05:03 UT" - 2020 DV3

K20D03V 2020 DV3 (Earth MOID=1.1 LD, H=27.7 ~10m) was picked up at 0726 UT on 27 Feb. by CSS, observing it at Feb. 27.31-33p4. This detection was confirmed by MLS (Feb. 27.32-33p4), McDonald Obs. (Feb. 27.36p3), Steward Mt. Lemmon Sta. (Feb. 27.49p4), ESA OGS (Feb. 27.99p3), Galilei Obs. (Feb. 28.07-09p3), and SATINO-1 (Feb. 28.13-14p2).

MPEC 2020-D125 - "04:55 UT" - 2020 DU3

K20D03U 2020 DU3 (small asteroid, H=24.9 ~35m) was picked up at 0401 UT on 25 Feb. by MLS, observing it at Feb. 25.17-18p3 and 27.15-16p4. This detection was confirmed by the Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) (Feb. 25.21p4), Steward Mt. Lemmon Sta. (Feb. 27.29-30p2 & 28.15p4), Great Shefford Obs. (Feb. 27.91-93p3), St. Pardon de Conques Obs. (Feb. 27.96-97p3), and Sandlot Obs. (Feb. 28.17-18p3).

MPEC 2020-D124 - "04:47 UT" - 2020 DT3

K20D03T 2020 DT3 (Earth MOID=7.0 LD, H=21.5 ~170m) was picked up at 0650 UT on 17 Feb. by MLS, observing it at Feb. 17.29-30p4 and 27.26-27p3. This detection was confirmed by McDonald Obs. (Feb. 27.31p3), Steward Mt. Lemmon Sta. (Feb. 27.44-45p3 & 28.16p4), and SATINO-1 (Feb. 28.09-12p2).

MPEC 2020-D123 - "03:19 UT" - 2020 DS3

K20D03S 2020 DS3 (Earth MOID=5.3 LD, H=26.0 ~21m, NHATS target) was picked up at 0328 UT on 26 Feb. by MLS, observing it at Feb. 26.14-16p4. This detection was confirmed by Steward Mt. Lemmon Sta. (Feb. 26.18p4 & 27.18-19p3), Pittichova/Table Mtn. (Feb. 26.25-26p2), Schwarzschild Obs. (Feb. 26.76p3), Pascoli Obs. (Feb. 26.86p3), ESA OGS (Feb. 26.98p3), McDonald Obs. (Feb. 27.19-20p3), and Farpoint Obs. (Feb. 27.23-24p5).

MPEC 2020-D122 - "03:17 UT" - 2020 DR3

K20D03R 2020 DR3 (small asteroid, H=26.2 ~19m) was picked up at 0509 UT on 26 Feb. by MLS, observing it at Feb. 26.22-23p4 and 27.28-29p4. This detection was confirmed by Steward Mt. Lemmon Sta. (Feb. 26.28p4 & 27.16p4), Pascoli Obs. (Feb. 26.94-95p3), SATINO-1 (Feb. 26.96-98p2), ESA OGS (Feb. 27.00p3), Visnjan Obs. (Feb. 27.09p3), Farpoint Obs. (Feb. 27.24-25p5), CSS (Feb. 27.29-30p4), North Obs. (Feb. 27.90-92p3), St. Pardon de Conques Obs. (Feb. 27.94p3), Great Shefford Obs. (Feb. 27.99p2), Clixby Obs. (Feb. 27.99p2), and Galilei Obs. (Feb. 28.03-04p3).

MPEC 2020-D121 - "03:15 UT" - 2020 DQ3

K20D03Q 2020 DQ3 (small asteroid, H=25.0 ~34m) was picked up at 1137 UT on 26 Feb. by ATLAS Mauna Loa, observing it at Feb. 26.48-55p7. This detection was confirmed by Pascoli Obs. (Feb. 27.01-02p5), SATINO-1 (Feb. 27.04-05p2), Mountainville Obs. (Feb. 27.17p1, 27.22p1 & 27.28p1), Steward Mt. Lemmon Sta. (Feb. 27.24p4), Farpoint Obs. (Feb. 27.29p5), McDonald Obs. (Feb. 27.38p3), ROASTERR-1 (Feb. 27.80-82p4), North Obs. (Feb. 27.86-87p4), Northolt Branch Obs. (Feb. 27.92p2), St. Pardon de Conques Obs. (Feb. 27.93p3), Clixby Obs. (Feb. 27.96-97p3), Great Shefford Obs. (Feb. 27.98p4), and Schiaparelli Obs. (Feb. 28.04-05p3).

MPEC 2020-D120 - "03:13 UT" - 2020 DP3

K20D03P 2020 DP3 (small asteroid, H=25.9 ~22m) was picked up at 0627 UT on 26 Feb. by MLS, observing it at Feb. 26.27-28p4 and 27.34-35p4. This detection was confirmed by CSS (Feb. 26.31-33p4), McDonald Obs. (Feb. 26.40p3 & 27.37p3), LCO Siding Spring A (Feb. 26.62p16), Pascoli Obs. (Feb. 26.91-92p3), ESA OGS (Feb. 27.00p3), SATINO-1 (Feb. 27.01-03p2), Visnjan Obs. (Feb. 27.11-12p3), LCO Cerro Tololo B (Feb. 27.17p22), Steward Mt. Lemmon Sta. (Feb. 27.17-18p4), Farpoint Obs. (Feb. 27.27-28p5), Sandlot Obs. (Feb. 27.29-30p4), and St. Pardon de Conques Obs. (Feb. 27.95p3).

Observers on 28 February '20

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

Code	Observer / observatory
`E23`	Arcadia Obs. in New South Wales, 1 in MPEC 2020-D131 -- 2020 DA4
`H21`	Astronomical Research Obs. Westfield in Illinois, 6 in MPECs 2020-D128 & 2020-D130 -- 2020 DZ3, 2020 DR2, 2020 BE12, 2020 BB1, 2002 PO75, 351508
`T05`	ATLAS Haleakala in Hawaii, 1 in MPEC 2020-D128 -- 106589
`T08`	ATLAS Mauna Loa in Hawaii, 14 in MPECs 2020-D121 & 2020-D128 -- 2020 DQ3, 2019 XG1, 2017 BM123, 2009 AH16, 52768, 511523, 463282, 448818, 162080, 137199, 136993, 111253, 9400, 1866
`Z84`	Calar Alto Schmidt in Spain, 2 in MPECs 2020-D131 & 2020-D134 -- 2020 DD4, 2020 DA4
`160`	Castelmartini Obs. in Italy, 1 in MPEC 2020-D131 -- 2020 DA4
`703`	Catalina Sky Survey (CSS) in Arizona, 34 in MPECs 2020-D120, 2020-D122, 2020-D126, 2020-D128, 2020-D130 & 2020-D132 -- 2020 DZ3, 2020 DV3, 2020 DR3, 2020 DP3, 2020 DE3, 2020 DB4, 2020 CA3, 2020 AZ2, 2019 UO, 2019 TH7, 2016 LE9, 2015 RH2, 2013 CL89, 2011 CX46, 2008 EE5, 2006 PY17, 2004 CH52, 2003 OC3, 2000 BO28, 1999 DB2, 90075, 65690, 492143, 402267, 250620, 175189, 162038, 154229, 152561, 143527, 11066, 106589, 8566, 2329
`V06`	Catalina Sky Survey Kuiper Telescope in Arizona, 1 in MPEC 2020-D125 -- 2020 DU3
`309&`	Marco Micheli via Cerro Paranal in Chile, 2 in MPEC 2020-D128 -- 2020 CQ1, 2020 CE1
`807\|`	Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 12 in MPECs 2020-D128, 2020-D129, 2020-D131, 2020-D132 & 2020-D133 -- 2020 DY3, 2020 DW3, 2020 DV3, 2020 DU3, 2020 DT3, 2020 DS3, 2020 DR3, 2020 DP3, 2020 DL2, 2020 DC4, 2020 DB4, 2020 DA4
`Z99`	Clixby Obs. in England, 4 in MPECs 2020-D121, 2020-D122, 2020-D128 & 2020-D131 -- 2020 DR3, 2020 DQ3, 2020 DC3, 2020 DA4
`958`	Dax Obs. in France, 1 in MPEC 2020-D131 -- 2020 DA4
`G372`	program code 2 via Discovery Channel Telescope (DCT) in Arizona, 2 in MPEC 2020-D128 -- 2019 QR6, 2019 PR2
`J04`	ESA Optical Ground Station (ESA OGS) in the Canary Islands, 13 in MPECs 2020-D120, 2020-D122, 2020-D123, 2020-D126, 2020-D127, 2020-D128, 2020-D129, 2020-D130, 2020-D131, 2020-D132, 2020-D133 & 2020-D134 -- 2020 DZ3, 2020 DY3, 2020 DW3, 2020 DV3, 2020 DS3, 2020 DR3, 2020 DR2, 2020 DP3, 2020 DF3, 2020 DD4, 2020 DC4, 2020 DB4, 2020 DA4
`734`	Farpoint Obs. in Kansas, 9 in MPECs 2020-D120, 2020-D121, 2020-D122, 2020-D123, 2020-D128, 2020-D129, 2020-D130, 2020-D131 & 2020-D132 -- 2020 DZ3, 2020 DY3, 2020 DW3, 2020 DS3, 2020 DR3, 2020 DQ3, 2020 DP3, 2020 DB4, 2020 DA4
`595`	Farra d'Isonzo Obs. in Italy, 1 in MPEC 2020-D131 -- 2020 DA4
`L34`	Galhassin Robotic Telescope, 1 in MPEC 2020-D131 -- 2020 DA4
`X31`	Galilei Obs., 3 in MPECs 2020-D122, 2020-D126 & 2020-D131 -- 2020 DV3, 2020 DR3, 2020 DA4
`203`	GiaGa Obs. in Italy, 1 in MPEC 2020-D131 -- 2020 DA4
`J95`	Great Shefford Obs. in England, 7 in MPECs 2020-D121, 2020-D122, 2020-D125, 2020-D127, 2020-D128, 2020-D131 & 2020-D132 -- 2020 DW3, 2020 DU3, 2020 DR3, 2020 DQ3, 2020 DM3, 2020 DB4, 2020 DA4
`C43`	Hoyerswerda Obs. in Germany, 1 in MPEC 2020-D131 -- 2020 DA4
`W86`	LCO Cerro Tololo B in Chile, 1 in MPEC 2020-D120 -- 2020 DP3
`W87`	LCO Cerro Tololo C in Chile, 1 in MPEC 2020-D130 -- 2020 DZ3
`Q63`	LCO Siding Spring A in New South Wales, 2 in MPECs 2020-D120 & 2020-D130 -- 2020 DZ3, 2020 DP3
`711`	McDonald Obs. in Texas, 8 in MPECs 2020-D120, 2020-D121, 2020-D123, 2020-D124, 2020-D126, 2020-D127, 2020-D130 & 2020-D131 -- 2020 DZ3, 2020 DW3, 2020 DV3, 2020 DT3, 2020 DS3, 2020 DQ3, 2020 DP3, 2020 DA4
`159`	Monte Agliale Obs. in Italy, 1 in MPEC 2020-D131 -- 2020 DA4
`V01`	Mountainville Obs. in Utah, 1 in MPEC 2020-D121 -- 2020 DQ3
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 34 in MPECs 2020-D120, 2020-D122, 2020-D123, 2020-D124, 2020-D125, 2020-D126, 2020-D127, 2020-D128, 2020-D129, 2020-D131, 2020-D133 & 2020-D134 -- 2020 DY3, 2020 DW3, 2020 DV3, 2020 DU3, 2020 DT3, 2020 DS3, 2020 DR3, 2020 DP3, 2020 DN1, 2020 DF2, 2020 DD4, 2020 DC4, 2020 DA4, 2020 DA2, 2020 CB1, 2020 CA3, 2020 BX14, 2020 BW2, 2020 BJ11, 2020 BE15, 2020 BA4, 2019 TH7, 2018 ET2, 2018 AG2, 2017 DU15, 2016 RW33, 2015 DJ155, 2015 DD200, 2015 BT515, 2015 AB, 2010 EF181, 2010 CH55, 2004 RV2, 2004 CH52
`J69`	North Obs. in England, 3 in MPECs 2020-D121, 2020-D122 & 2020-D131 -- 2020 DR3, 2020 DQ3, 2020 DA4
`Z80`	Northolt Branch Obs. in England, 2 in MPECs 2020-D121 & 2020-D131 -- 2020 DQ3, 2020 DA4
`F51`	Pan-STARRS 1 (PS1) in Hawaii, 2 in MPEC 2020-D128 -- 2019 AG13, 2010 US7
`K63`	Pascoli Obs. in Italy, 7 in MPECs 2020-D120, 2020-D121, 2020-D122, 2020-D123, 2020-D129, 2020-D131 & 2020-D132 -- 2020 DY3, 2020 DS3, 2020 DR3, 2020 DQ3, 2020 DP3, 2020 DB4, 2020 DA4
`H45`	Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 9 in MPEC 2020-D128 -- 2020 DX, 2020 DR2, 2020 BP14, 2016 UT80, 2016 AX147, 2008 EE5, 2005 SQ, 52768, 35107
`6581`	Dave Balam via Plaskett 1.8m Telescope in British Columbia, 1 in MPEC 2020-D131 -- 2020 DA4
`654`	Pomona College Table Mtn. Obs. (PCTMO) in southern California, 2 in MPEC 2020-D128 -- 2020 BS1, 2020 AQ1
`L18`	QOS Obs., 3 in MPEC 2020-D128 -- 2020 DX, 2017 BM123, 40267
`L04`	ROASTERR-1 in Romania, 2 in MPECs 2020-D121 & 2020-D131 -- 2020 DQ3, 2020 DA4
`H36`	Sandlot Obs. in Kansas, 5 in MPECs 2020-D120, 2020-D125, 2020-D128, 2020-D129 & 2020-D131 -- 2020 DY3, 2020 DU3, 2020 DP3, 2020 DA4, 2016 FG15
`C95`	SATINO-1 in France, 7 in MPECs 2020-D120, 2020-D121, 2020-D122, 2020-D124, 2020-D126, 2020-D128 & 2020-D131 -- 2020 DV3, 2020 DT3, 2020 DR3, 2020 DQ3, 2020 DP3, 2020 DA4, 2009 FU4
`K96`	Savelli Obs., 4 in MPECs 2020-D128, 2020-D130, 2020-D131 & 2020-D132 -- 2020 DZ3, 2020 DM3, 2020 DB4, 2020 DA4
`204`	Schiaparelli Obs. in Italy, 3 in MPECs 2020-D121, 2020-D130 & 2020-D131 -- 2020 DZ3, 2020 DQ3, 2020 DA4
`033`	Schwarzschild Obs. in Germany, 2 in MPECs 2020-D123 & 2020-D128 -- 2020 DS3, 2020 DC3
`G40!`	M. Kumrucu-Lohmiller in Massachusetts via Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2020-D128 -- 2020 DP2
`G40-`	program code "-" (22) via Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2020-D128 -- 2020 DQ3
`W881`	Tony Evans in Portugal via Slooh.com Chile Obs. in Chile, 1 in MPEC 2020-D128 -- 2020 DR2
`691`	Spacewatch 0.9m telescope in Arizona, 5 in MPEC 2020-D128 -- 2020 DF3, 2020 BS11, 2020 BC16, 2016 AX147, 2008 UB95
`291`	Spacewatch 1.8m telescope in Arizona, 1 in MPEC 2020-D128 -- 1995 CR
`W34`	Squirrel Valley Obs. in North Carolina, 2 in MPECs 2020-D128 & 2020-D131 -- 2020 DQ3, 2020 DA4
`I93`	St. Pardon de Conques Obs. in France, 7 in MPECs 2020-D120, 2020-D121, 2020-D122, 2020-D125, 2020-D127, 2020-D129 & 2020-D131 -- 2020 DY3, 2020 DW3, 2020 DU3, 2020 DR3, 2020 DQ3, 2020 DP3, 2020 DA4
`I52`	Steward Obs. Mt. Lemmon Station in Arizona, 14 in MPECs 2020-D120, 2020-D121, 2020-D122, 2020-D123, 2020-D124, 2020-D125, 2020-D126, 2020-D127, 2020-D128, 2020-D129, 2020-D130, 2020-D131, 2020-D132, 2020-D133 & 2020-D134 -- 2020 DZ3, 2020 DY3, 2020 DW3, 2020 DV3, 2020 DU3, 2020 DT3, 2020 DS3, 2020 DR3, 2020 DQ3, 2020 DP3, 2020 DD4, 2020 DC4, 2020 DB4, 2020 DA4
`Q38`	Swan Hill Obs., 1 in MPEC 2020-D128 -- 2020 BZ12
`673!`	Jana Pittichova Chesley via Table Mtn. Obs. in southern California, 2 in MPECs 2020-D123 & 2020-D131 -- 2020 DS3, 2020 DA4
`W33`	Transit Dreams Obs., 4 in MPEC 2020-D128 -- 2000 BO28, 65690, 52768, 35107
`T12`	UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2020-D128 -- 2020 BN7
`T14`	UH/Tholen NEO Follow-Up CFH Telescope in Hawaii, 1 in MPEC 2020-D128 -- 2020 CD3
`L01`	Visnjan Obs. in Croatia, 5 in MPECs 2020-D120, 2020-D122, 2020-D131, 2020-D133 & 2020-D134 -- 2020 DR3, 2020 DP3, 2020 DD4, 2020 DC4, 2020 DA4
`C51`	WISE in Earth polar orbit, 1 in MPEC 2020-D128 -- 416231
`I41`	Zwicky Transient Facility (ZTF) in southern California, 20 in MPEC 2020-D128 -- 2020 BH11, 2019 XG, 2017 MX4, 2013 UR3, 99248, 90367, 511243, 482244, 415267, 36284, 338347, 331792, 214088, 20255, 18172, 162080, 15745, 137099, 137064, 7088

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

Impact Risk Monitoring on 28 February '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 DN3	NEODyS	1630	2104-2117	9	3.94e-07	-7.46	-7.99	0	NEODyS: "Based on 57 optical observations (of which 0 are rejected as outliers) from 2020-02-26.217 to 2020-02-27.337."

2020 DM3	JPL Sentry	1630	2109-2109	1	1.960e-07	-7.38	-7.38	0	JPL: Computed at 06:50 today Pacific time based on 53 observations spanning 1.8610 days (2020-Feb-26.14966 to 2020-Feb-28.01069). Diameter approximately 0.020 km. from weighted mean H=26.17.
2020 DM3	NEODyS	1630	2109	1	7.42e-09	-8.82	-8.82	0	NEODyS: "Based on 53 optical observations (of which 1 are rejected as outliers) from 2020-02-26.150 to 2020-02-28.011."

2020 DF3	JPL Sentry	1630	2053-2115	13	4.651653e-06	-4.67	-5.13	0	JPL: Computed at 06:37 today Pacific time based on 51 observations spanning 3.7788 days (2020-Feb-24.44469 to 2020-Feb-28.22348). Diameter approximately 0.050 km. from weighted mean H=24.13.
2020 DF3	NEODyS	1630	2050-2117	19	2.14e-06	-5.02	-5.4	0	NEODyS: "Based on 51 optical observations (of which 1 are rejected as outliers) from 2020-02-24.445 to 2020-02-28.224."

2020 DR2	JPL Sentry	2312	2074-2114	4	1.52659786e-05	-1.65	-1.94	1	JPL #2 for the day: Computed at 14:29 today Pacific time based on 155 observations spanning 7.6498 days (2020-Feb-20.19345 to 2020-Feb-27.843204). Diameter approximately 0.590 km. from weighted mean H=18.80.
2020 DR2	NEODyS	1630	2074-2114	4	1.4e-05	-1.69	-1.99	1	NEODyS: "Based on 162 optical observations (of which 2 are rejected as outliers) from 2020-02-20.194 to 2020-02-28.112."

2020 DF2	NEODyS	1630	2117	1	3.2e-11	-11.27	-11.27	0	NEODyS: "Based on 64 optical observations (of which 1 are rejected as outliers) from 2020-02-19.162 to 2020-02-27.250."

2020 CD3	JPL Sentry	2312	2061-2118	24	0.02178499458	-5.22	-5.55	0	JPL #3 for the day: Computed at 14:39 today Pacific time based on 55 observations spanning 12.134 days (2020-Feb-15.51114 to 2020-Feb-27.645156). Diameter approximately 0.002 km. from weighted mean H=31.72.

2020 CQ1	JPL Sentry	2312	2052-2107	16	0.00131544566	-4.92	-4.95	0	JPL #2 for the day: Computed at 15:03 today Pacific time based on 41 observations spanning 21.927 days (2020-Feb-05.3547 to 2020-Feb-27.281772). Diameter approximately 0.006 km. from weighted mean H=28.83.
2020 CQ1	NEODyS	1630	2052-2118	64	7.17e-03	-4.21	-4.7	0	NEODyS: "Based on 41 optical observations (of which 0 are rejected as outliers) from 2020-02-05.356 to 2020-02-27.283."

2020 CE1	JPL Sentry	1630	2095-2095	2	3.68e-07	-6.81	-7.09	0	JPL: Computed at 06:31 today Pacific time based on 31 observations spanning 24.925 days (2020-Feb-02.15265 to 2020-Feb-27.077916). Diameter approximately 0.026 km. from weighted mean H=25.60.
2020 CE1	NEODyS	1630	2095	2	3.44e-08	-7.86	-8.15	0	NEODyS: "Based on 31 optical observations (of which 0 are rejected as outliers) from 2020-02-02.153 to 2020-02-27.079."

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 28 February '20

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

2312	Noted that JPL Sentry has updated its 2020 CD3 risk assessment - see above Noted that JPL Sentry has updated its 2020 CQ1 risk assessment - see above Noted that JPL Sentry has updated its 2020 DR2 risk assessment - see above Grabbed MPEC 2020-D131 - 2020 DA4 - see above Grabbed MPEC 2020-D132 - 2020 DB4 - see above Grabbed MPEC 2020-D133 - 2020 DC4 - see above Grabbed MPEC 2020-D134 - 2020 DD4 - see above
2209	Grabbed MPEC 2020-D129 - 2020 DY3 - see above Grabbed MPEC 2020-D130 - 2020 DZ3 - see above
1630	Noted that JPL Sentry has updated its 2020 CD3 risk assessment - see above Noted that JPL Sentry has updated its 2020 CE1 risk assessment - see above Noted that NEODyS has updated its 2020 CE1 risk assessment - see above Noted that JPL Sentry has updated its 2020 CQ1 risk assessment - see above Noted that NEODyS has updated its 2020 CQ1 risk assessment - see above Noted that NEODyS has posted 2020 DF2 as an impact risk - see above Noted that JPL Sentry has updated its 2020 DF3 risk assessment - see above Noted that NEODyS has updated its 2020 DF3 risk assessment - see above Noted that JPL Sentry has updated its 2020 DM3 risk assessment - see above Noted that NEODyS has posted 2020 DM3 as an impact risk - see above Noted that NEODyS has posted 2020 DN3 as an impact risk - see above Noted that JPL Sentry has updated its 2020 DR2 risk assessment - see above Noted that NEODyS has updated its 2020 DR2 risk assessment - see above Grabbed MPEC 2020-D128 - Daily Orbit Update - see above
0642	Grabbed MPEC 2020-D126 - 2020 DV3 - see above Grabbed MPEC 2020-D127 - 2020 DW3 - see above
0500	Grabbed MPEC 2020-D124 - 2020 DT3 - see above Grabbed MPEC 2020-D125 - 2020 DU3 - see above
0407	Grabbed MPEC 2020-D120 - 2020 DP3 - see above Grabbed MPEC 2020-D121 - 2020 DQ3 - see above Grabbed MPEC 2020-D122 - 2020 DR3 - see above Grabbed MPEC 2020-D123 - 2020 DS3 - see above
0105	Noted that JPL Sentry has updated its 2020 CD3 risk assessment - see above

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