2020-02-22 Tracking News

Contents on 22 February '20

IAU Minor Planet Center
- NEOCP Activity -- 32 listings
- New MPECs -- five MPECs
Observers -- 54 observers
Impact Risk Monitoring -- four objects
Chronology

Asteroid/Comet Connection (A/CC) Resources:

Consolidated Risk Tables - the CRT page
Of 1109 risk-listed objects, 66 have had news in the last 31 days. Updated at 2333 UTC on 22 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 22 February '20

The MPC's NEO Confirmation Page has 32 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 32 objects listed. Of these, fifteen were "one nighters." So far The Tracking News has counted a total of 42 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 22 February '20

Minor Planet Electronic Circulars

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

MPEC 2020-D91 time-stamped "12:13 UT" - Daily Orbit Update - see below
MPEC 2020-D92 time-stamped "12:40 UT" - 2020 DP2 - see below
MPEC 2020-D93 time-stamped "21:43 UT" - 2020 DR2 - see below
MPEC 2020-D94 time-stamped "21:49 UT" - 2020 DS2 - see below
MPEC 2020-D95 time-stamped "21:51 UT" - 2020 DT2

MPEC 2020-D95 - "21:51 UT" - 2020 DT2

K20D02T 2020 DT2 (small asteroid, Earth MOID=2.5 LD, H=27.6 ~10m) was picked up at 0632 UT on 21 Feb. by the Bok Telescope, observing it at Feb. 21.27-28p4. This detection was confirmed by Steward Obs. Mt. Lemmon Station (Feb. 21.32p2), the Mt. Lemmon Survey (MLS) (Feb. 21.34p3 & 21.39-40p3), Visnjan Obs. (Feb. 21.93-94p4), Schwarzschild Obs. (Feb. 22.06p3), Astronomical Research Obs. Westfield (Feb. 22.16-18p3), and Calar Alto Schmidt (Feb. 22.84-86p7).

MPEC 2020-D94 - "21:49 UT" - 2020 DS2

K20D02S 2020 DS2 (Q=4.438 AU, H=21.6 ~162m) was picked up at 0531 UT on 19 Feb. by MLS, observing it at Feb. 19.23-24p3. This detection was confirmed by Steward Mt. Lemmon Sta. (Feb. 19.33p2, 20.17p4 & 21.15p4), Mt. John Obs. (Feb. 19.50p4), St. Pardon de Conques Obs. (Feb. 19.88p1 & 19.92-93p2), Calar Alto Schmidt (Feb. 19.92-95p3), Visnjan Obs. (Feb. 19.97p3), Galilei Obs. (Feb. 19.99-00p2), Celado Obs. (Feb. 20.85-86p3), Sormano Obs. (Feb. 20.86p3), Schwarzschild Obs. (Feb. 20.87p3 at V=21.8-22.2), Schiaparelli Obs. (Feb. 20.91-93p2), San Marcello Pistoiese Obs. (Feb. 20.91-92p2), Great Shefford Obs. (Feb. 20.96-98p2), Farpoint Obs. (Feb. 21.15-17p4), Sandlot Obs. (Feb. 21.16-17p3), ARO Westfield (Feb. 21.17-18p3), and Squirrel Valley Obs. (Feb. 22.10-12p3).

MPEC 2020-D93 - "21:43 UT" - 2020 DR2

K20D02R 2020 DR2 (risk listed, Earth MOID=3.1 LD, H=18.8 ~589m) was picked up at 0438 UT on 20 Feb. by the Catalina Sky Survey (CSS), observing it at Feb. 20.19-21p4. This detection was confirmed by Steward Mt. Lemmon Sta. (Feb. 20.23-24p4 & 21.15p4), Visnjan Obs. (Feb. 20.77-78p6), PASTIS Obs. (Feb. 20.79-81p3 & 22.79-81p3), Castelmartini Obs. (Feb. 20.80-81p7), St. Pardon de Conques Obs. (Feb. 20.81-82p3), San Marcello Pistoiese Obs. (Feb. 20.83-84p3), Farra d'Isonzo Obs. (Feb. 20.83-85p4), Schiaparelli Obs. (Feb. 20.85p3), Calar Alto Schmidt (Feb. 20.85-86p4), Dax Obs. (Feb. 20.86-88p3), Great Shefford Obs. (Feb. 20.86-87p4), Sormano Obs. (Feb. 20.88-89p3), Galilei Obs. (Feb. 20.98p3 & 21.98-99p3), Auger Obs. (Feb. 21.04-05p3), ARO Westfield (Feb. 21.06-07p5 & 22.02-03p6), Cordell-Lorenz Obs. (Feb. 21.13-19p5 & 22.17-19p4), Farpoint Obs. (Feb. 21.14-15p5), Savelli Obs. (Feb. 21.79-80p3), LCO Sutherland C (Feb. 21.83p4), Foxfire Village Obs. (Feb. 22.02-04p3), Sandlot Obs. (Feb. 22.15p5), and SATINO-1 (Feb. 22.80-82p4).

MPEC 2020-D92 - "12:40 UT" - 2020 DP2

K20D02P 2020 DP2 (Q=4.679 AU, Earth MOID=1.1 LD, H=21.4 ~178m) was picked up at 1015 UT on 20 Feb. by CSS, observing it at Feb. 20.43-44p4 and 21.30p4. This detection was confirmed by Steward Mt. Lemmon Sta. (Feb. 20.53p3), Sormano Obs. (Feb. 20.91-93p5), North Obs. (Feb. 20.98-99p3), Great Shefford Obs. (Feb. 20.99-00p4), Visnjan Obs. (Feb. 21.01-02p3), SATINO-1 (Feb. 21.02-03p3), Northolt Branch Obs. (Feb. 21.03-04p2), Pascoli Obs. (Feb. 21.06p3), Schiaparelli Obs. (Feb. 21.16-17p3), Schwarzschild Obs. (Feb. 21.16p4 & 22.04p3), Farpoint Obs. (Feb. 21.29-30p5), ARO Westfield (Feb. 21.30-31p5 & 22.33-34p6), Mountainville Obs. (Feb. 21.30p1 & 21.36p1), Sandlot Obs. (Feb. 21.30-31p3), Cordell-Lorenz Obs. (Feb. 21.31-33p3 & 22.33-39p6), Robert Holmes via Cerro Tololo Inter-American Obs. (CTIO) (Feb. 21.34p5), MLS (Feb. 21.39p4), R. Wainscoat on Mauna Kea (Feb. 21.57p2), Savelli Obs. (Feb. 21.94-95p3), Luscherz Obs. (Feb. 21.96-98p3), Farra d'Isonzo Obs. (Feb. 21.98-99p3), St. Pardon de Conques Obs. (Feb. 21.98-99p3), GiaGa Obs. (Feb. 21.99-01p3), Dax Obs. (Feb. 22.02-04p3), and Muensterschwarzach Obs. (Feb. 22.19p4).

<< DOU on 22 February '20 >> MPEC 2020-D91 - "12:13 UT" - Daily Orbit Update

Observations of risk-listed objects
K20B14J 2020 BJ14 (small asteroid, Q=4.790 AU, arc=22 days, H=24.3 ~47m, close passer) from ARO Westfield (Feb. 21.23-25p3 at V=21.9-22.1)
K20B13U 2020 BU13 (q=0.073 AU, Q=4.872 AU, arc=25 days, H=21.2 ~195m) from UH/Tholen NEO Follow-Up 2.24m Telescope (Feb. 19.36-37p2 at G=23.84-97)
99942 99942 Apophis (2004 MN4) (NHATS target) from Squirrel Valley Obs. (Feb. 22.05-07p3)
Observations of recently (no longer) risk-listed objects
K20B04J 2020 BJ4 (almost small, Q=4.728 AU, arc=33 days, H=21.8 ~148m) from R. Wainscoat/Mauna Kea (Feb. 21.40p2)
Observations of close-passing objects
K20D02K 2020 DK2 (arc=1 day, H=26.3 ~19m) from Sormano Obs. (Feb. 20.96p3)
K20D02H 2020 DH2 (arc=2 days, H=25.2 ~31m) from Dave Balam via Plaskett 1.8m Telescope (Feb. 21.35-36p5)
K20D02F 2020 DF2 (arc=2 days, H=26.1 ~20m) from Calar Alto Schmidt (Feb. 20.93-95p7)
K20D02D 2020 DD2 (arc=2 days, H=25.9 ~22m) from Sormano Obs. (Feb. 20.81p3), Calar Alto Schmidt (Feb. 20.89-91p10), and Northolt Branch Obs. (Feb. 20.97-98p3)
K20D00M 2020 DM (arc=5 days, H=26.8 ~15m) from ARO Westfield (Feb. 21.20-21p3 at V=21.7-22.2)
Observation campaigns (NHATS targets, radar support)
K20C01J 2020 CJ1 (arc=31 days, H=23.8 ~59m, NHATS) from ARO Westfield (Feb. 21.41-42p3 at V=21.9-22.2)
K20B01G 2020 BG1 (arc=35 days, H=22.1 ~129m, NHATS) from R. Wainscoat/Mauna Kea (Feb. 21.45p2)
K20A00U 2020 AU (arc=52 days, H=25.7 ~25m, NHATS) from ARO Westfield (Feb. 21.22p3 at V=21.8-22.1)
K17BC3M 2017 BM123 (arc=3 opp, H=23.8 ~59m, NHATS, radar) from M. Kumrucu-Lohmiller via Slooh.com Canary Islands Obs. (Feb. 21.08-12p3) and Schwarzschild Obs. (Feb. 22.04p3)
K16T00K 2016 TK (arc=2 opp, H=23.3 ~74m, NHATS) from ARO Westfield (Feb. 21.08-09p4 at V=22.2-4)
K11G60D 2011 GD60 (arc=3 opp, H=21.8 ~148m, NHATS) from Schwarzschild Obs. (Feb. 22.20p2)
-- NHATS target table -- Planetary radar schedules: Arecibo & Goldstone
Observations of small (H>22.0) & smallish (21.7<H<=22.0) asteroids
K20D01R 2020 DR1 (arc=5 days, H=24.5 ~43m) from ARO Westfield (Feb. 21.38-39p3 at V=22.0-22.2)
K20C02S 2020 CS2 (arc=6 days, H=24.4 ~45m) from Pomona College Table Mtn. Obs. (PCTMO) (Feb. 21.29p1 & 21.35-40p3)
K20C01W 2020 CW1 (arc=18 days, H=22.7 ~98m) from R. Wainscoat/Mauna Kea (Feb. 21.60-61p2)
K20C01P 2020 CP1 (arc=19 days, H=22.1 ~129m) from Bok Tel. (Feb. 21.25-26p4 at G=21.7-22.3)
K20B15T 2020 BT15 (arc=25 days, H=22.4 ~112m) from R. Wainscoat/Mauna Kea (Feb. 21.52-53p2 at G=22.64)
K20B15D 2020 BD15 (arc=23 days, H=22.6 ~102m) from R. Wainscoat/Mauna Kea (Feb. 21.38-39p2)
K20B12U 2020 BU12 (arc=24 days, H=22.5 ~107m) from the Zwicky Transient Facility (ZTF) (Feb. 19.27-32p4)
K20B11E 2020 BE11 (arc=26 days, H=22.5 ~107m) from R. Wainscoat/Mauna Kea (Feb. 21.46-47p2 at G=22.41-59)
K20B10X 2020 BX10 (arc=26 days, H=22.7 ~98m) from R. Wainscoat/Mauna Kea (Feb. 21.37p2)
K20B10R 2020 BR10 (arc=34 days, H=22.8 ~93m) from Castelmartini Obs. (Feb. 20.85-86p3)
K20B09J 2020 BJ9 (arc=33 days, H=24.9 ~35m) from ARO Westfield (Feb. 21.43-44p3 at V=22.4-7)
K20B09D 2020 BD9 (arc=27 days, H=24.9 ~35m) from ARO Westfield (Feb. 21.40-42p3 at V=22.1-4)
K20B03O 2020 BO3 (arc=31 days, H=23.4 ~71m) from ARO Westfield (Feb. 21.05-07p4 at V=22.2-3)
K20A02S 2020 AS2 (arc=152 days, H=22.9 ~89m) from Bok Tel. (Feb. 21.27-28p3 at G=22.1-6)
K15Bo9K 2015 BK509 (arc=2 opp, H=22.4 ~112m) from Landehen Obs. (Feb. 20.92-93p3), Castelmartini Obs. (Feb. 21.90p3), and Squirrel Valley Obs. (Feb. 22.02-03p4)
K03S84S 2003 SS84 (arc=4 opp, H=21.8 ~148m) from SATINO-1 (Feb. 19.84-87p3)
Observations of other objects
K20D02G 2020 DG2 (arc=17 days, H=19.7 ~389m) from Pic du Midi Obs. (Feb. 20.80-81p10)
K20D00X 2020 DX from Castelmartini Obs. (Feb. 21.86p3)
K20D00Q 2020 DQ (arc=5 days, H=21.4 ~178m) from PCTMO (Feb. 21.21-25p2 & 21.31-34p2)
K20C02D 2020 CD2 (arc=31 days, H=21.3 ~186m) from Pan-STARRS 2 (PS2) (Jan. 21.59-63p4 at G=21.0-22.2) and R. Wainscoat/Mauna Kea (Feb. 21.56p1)
K20B14P 2020 BP14 from ATLAS Haleakala (Feb. 21.28-31p7)
K20B13H 2020 BH13 (Q=4.129 AU, arc=26 days, H=19.9 ~355m) from R. Wainscoat/Mauna Kea (Feb. 21.41p1 at G=22.98)
K20B12Z 2020 BZ12 from Castelmartini Obs. (Feb. 21.87p3)
K20B12D 2020 BD12 (arc=53 days, H=20.9 ~224m) from ARO Westfield (Feb. 21.09-11p3 at V=22.2-4)
K20B11Z 2020 BZ11 from ATLAS Haleakala (Feb. 21.41-43p4)
K20B06C 2020 BC6 (arc=35 days, H=20.6 ~257m) from ARO Westfield (Feb. 21.18-19p3 at V=22.3-5)
K20B04F 2020 BF4 (arc=32 days, H=20.1 ~323m) from R. Wainscoat/Mauna Kea (Feb. 21.34p2)
K20B02E 2020 BE2 (arc=33 days, H=20.2 ~309m) from MLS (Feb. 21.30-31p4)
K20A03F 2020 AF3 (arc=45 days, H=20.2 ~309m) from Martin Altman via the Liverpool Telescope (Feb. 19.88-89p10)
K19X01G 2019 XG1 (Q=4.163 AU, arc=2 opp, H=19.2 ~490m) from ZTF (Feb. 20.34-36p4) and ATLAS Haleakala (Feb. 21.45-48p8)
K19H04H 2019 HH4 (arc=2 opp, H=20.0 ~339m) from Pan-STARRS 1 (PS1) (2019 May 10.39-42p4 at G=22.2-5, 2019 May 11.35-36p2 at G=22.4-7, 2019 May 23.32-35p3 at G=21.6-9 & Jan. 23.22-23p3 at G=21.6-22.3)
K19B01O 2019 BO1 (arc=2 opp, H=19.6 ~407m) from Schwarzschild Obs. (Feb. 22.07p3)
K17D34J 2017 DJ34 (i=41.4°, arc=2 opp, H=21.1 ~204m) from ZTF (Feb. 20.37p1)
K17B94B 2017 BB94 (arc=3 opp, H=20.3 ~295m) from Schwarzschild Obs. (Feb. 22.08p3)
K17B92E 2017 BE92 (i=40.8°, arc=2 opp, H=20.0 ~339m) from Schwarzschild Obs. (Feb. 22.18-19p3)
K17B31P 2017 BP31 (arc=3 opp, H=19.8 ~371m) from Schwarzschild Obs. (Feb. 22.10p3)
K16F15G 2016 FG15 (Q=4.232 AU, arc=3 opp, H=19.9 ~355m) from Schwarzschild Obs. (Feb. 22.20-21p2)
K16E27Y 2016 EY27 (arc=3 opp, H=20.5 ~269m) from ARO Westfield (Feb. 21.14-15p3 at V=22.0-22.2)
K16AE7X 2016 AX147 (arc=4 opp, H=17.7 ~977m) from ATLAS Mauna Loa (Feb. 21.38-40p3) and Castelmartini Obs. (Feb. 21.89-90p3)
K09F04U 2009 FU4 (arc=4 opp, H=17.8 ~933m) from ZTF (Feb. 19.35-37p2, 21.33-35p2 & 21.42p1)
K09A16H 2009 AH16 (arc=8 opp, H=17.7 ~977m) from ATLAS Haleakala (Feb. 21.53-55p4)
K08E05E 2008 EE5 (i=44.8°, arc=4 opp, H=19.7 ~389m) from Castelmartini Obs. (Feb. 20.82-83p3 & 21.81p3)
K08C21Z 2008 CZ21 (arc=4 opp, H=20.4 ~282m) from ZTF (Feb. 19.24-26p2 & 21.24p2) and MLS (Feb. 21.27-28p4)
K06WC9F 2006 WF129 (Q=4.051 AU, arc=3 opp, H=19.0 ~537m) from ARO Westfield (Feb. 21.13p2 at V=22.1-2)
K06S78O 2006 SO78 (arc=3 opp, H=19.0 ~537m) from ARO Westfield (Feb. 21.20-22p3 at V=22.1-3)
K05E70Q 2005 EQ70 (arc=3 opp, H=20.3 ~295m) from ARO Westfield (Feb. 21.45-46p3 at V=22.0-22.2)
K03O03C 2003 OC3 (arc=5 opp, H=18.7 ~616m) from Castelmartini Obs. (Feb. 21.84-85p3)
K03M02S 2003 MS2 (arc=3 opp, H=21.2 ~195m) from ARO Westfield (Feb. 21.44-45p3 at V=22.1-3)
K00B28O 2000 BO28 (arc=7 opp, H=19.7 ~389m) from ATLAS Mauna Loa (Feb. 21.50-52p4)
r1060 531060 2012 DJ61 from ATLAS Mauna Loa (Feb. 21.59p2)
p2245 512245 2016 AU8 from ATLAS Mauna Loa (Feb. 21.37-39p4)
p2244 512244 2015 YE18 from ATLAS Mauna Loa (Feb. 21.23-25p4)
p1523 511523 2014 QS439 from PS1 (Jan. 30.44-47p4)
o0094 500094 2012 BC20 from ATLAS Mauna Loa (Feb. 21.47-49p4)
n2143 492143 2013 OE from ATLAS Mauna Loa (Feb. 21.26-27p3)
m2244 482244 2011 HR from ZTF (Feb. 20.40p1 & 21.39-43p2)
j8732 458732 2011 MD5 from ZTF (Feb. 19.13p1, 19.20p1 & 20.14-17p2)
h6037 436037 2009 NJ from ATLAS Mauna Loa (Feb. 21.26-28p4)
f6591 416591 2004 LC2 from ATLAS Haleakala (Feb. 21.45-47p4)
e9342 409342 2004 XM35 from MLS (Feb. 21.15-17p4)
e8792 408792 2000 GF2 from ARO Westfield (Feb. 21.14-15p3 at V=22.0-22.3)
d3908 393908 2005 UH3 from ARO Westfield (Feb. 21.38-39p3 at V=21.7-22.1)
X8049 338049 2002 NY31 from ARO Westfield (Feb. 21.35-36p3 at V=21.8-22.2)
X1769 331769 2003 BQ35 from ZTF (Feb. 20.27-31p2 & 21.21-25p2)
W9520 329520 2002 SV from MLS (Feb. 21.30-32p4)
O8926 248926 2006 WZ2 from ATLAS Haleakala (Feb. 21.38-39p3) and Foxfire Village Obs. (Feb. 22.04-06p3)
O3025 243025 2006 UM216 from ATLAS Mauna Loa (Feb. 21.31-33p4)
G3760 163760 2003 OR14 from ATLAS Mauna Loa (Feb. 21.22-24p4)
G2080 162080 1998 DG16 from ATLAS Haleakala (Feb. 21.45-46p4)
G2038 162038 1996 DH from ATLAS Mauna Loa (Feb. 21.41-43p4)
F9928 159928 2005 CV69 from ATLAS Mauna Loa (Feb. 21.60-62p4)
F9454 159454 2000 DJ8 from ZTF (Feb. 21.17-19p2 & 21.28-30p4) and MLS (Feb. 21.18-19p4)
F4993 154993 2005 EA94 from Muensterschwarzach Obs. (Feb. 22.20p4)
F3267 153267 2001 CB32 from ATLAS Haleakala (Feb. 21.29-31p4)
F2931 152931 2000 EA107 from ATLAS Mauna Loa (Feb. 21.62-65p4)
F2561 152561 1991 RB from ATLAS Mauna Loa (Feb. 21.58-60p4)
E2348 142348 2002 RX211 from CSS (2017 Dec. 26.41-43p4)
E1498 141498 2002 EZ16 from PS1 (2019 Oct. 8.62-63p3)
D9289 139289 2001 KR1 from WISE (Feb. 19.15p1, 19.28p1, 19.34p1, 19.47p1, 19.54p2, 19.60p1, 19.73p1 & 19.87p2)
D8127 138127 2000 EE14 from ATLAS Mauna Loa (Feb. 21.62-64p4)
D7925 137925 2000 BJ19 from ATLAS Mauna Loa (Feb. 21.26-28p4)
D7805 137805 1999 YK5 from CSS (2018 Nov. 10.45-47p4 & 2018 Nov. 13.46-47p4)
D7199 137199 1999 KX4 from ATLAS Haleakala (Feb. 21.33-36p8)
D6993 136993 1998 ST49 from ATLAS Haleakala (Feb. 21.54-56p4)
D6795 136795 1997 BQ from ATLAS Haleakala (Feb. 21.30-31p4)
D6582 136582 1992 BA from PS2 (Jan. 19.47-51p3), PS1 (Jan. 23.47-50p3), and ZTF (Feb. 21.19-21p3)
A6589 106589 2000 WN107 from ATLAS Mauna Loa (Feb. 21.22-24p4)
A6538 106538 2000 WK63 from ATLAS Mauna Loa (Feb. 21.22-24p4)
A3067 103067 1999 XA143 from Transit Dreams Obs. (Feb. 22.13-14p4)
A2873 102873 1999 WK11 from MLS (Feb. 21.30-31p3)
99248 99248 2001 KY66 from Tentlingen Obs. (Feb. 21.85-87p3)
90075 90075 2002 VU94 from ATLAS Mauna Loa (Feb. 21.37-39p4)
89830 89830 2002 CE from ATLAS Haleakala (Feb. 21.52-54p4)
86450 86450 2000 CK33 from Tentlingen Obs. (Feb. 21.80-84p6)
85490 85490 1997 SE5 from ZTF (Feb. 20.14p1 & 20.22p1)
65690 65690 1991 DG from ATLAS Mauna Loa (Feb. 21.44-47p4) and Transit Dreams Obs. (Feb. 22.19-21p4)
54686 54686 2001 DU8 from PS2 (Feb. 3.60-63p3) and ATLAS Mauna Loa (Feb. 21.44-46p4)
52768 52768 1998 OR2 from ATLAS Haleakala (Feb. 21.43-45p4) and Transit Dreams Obs. (Feb. 22.10-13p4)
35107 35107 1991 VH from MLS (Feb. 21.30-31p4) and Transit Dreams Obs. (Feb. 22.17-18p4)
34613 34613 2000 UR13 from ZTF (Feb. 19.15p1, 19.30p1, 21.17-18p2 & 21.28p1)
30825 30825 1990 TG1 from ATLAS Mauna Loa (Feb. 21.30-31p3)
18172 18172 2000 QL7 from ATLAS Haleakala (Feb. 21.51-52p4)
11405 11405 1999 CV3 from ATLAS Mauna Loa (Feb. 21.27-29p4)
11066 11066 Sigurd (1992 CC1) from ATLAS Mauna Loa (Feb. 21.57-60p4)
08566 8566 1996 EN from ATLAS Mauna Loa (Feb. 21.46-48p4)
04055 4055 Magellan (1985 DO2) from ATLAS Mauna Loa (Feb. 21.56-58p4)
02059 2059 Baboquivari (1963 UA) from ATLAS Mauna Loa (Feb. 21.25-27p4)
01866 1866 Sisyphus (1972 XA) from WISE (Feb. 19.98p1, 20.11p1, 20.24p1, 20.44p1, 20.50p2, 20.57p1, 20.63p1, 20.70p1, 20.76p1, 20.83p1, 20.90p1, 20.96p1, 21.03p1, 21.22p1, 21.35p1 & 21.48p2) and ATLAS Haleakala (Feb. 21.33-35p4)
01864 1864 Daedalus (1971 FA) from MASTER IAC Obs. (Feb. 21.22-23p2)
01627 1627 Ivar (1929 SH) from ZTF (Feb. 20.21-31p6 & 21.19-21p2)

Observers on 22 February '20

A total of 54 observers appear in today's MPECs.

Code	Observer / observatory
`H21`	Astronomical Research Obs. Westfield in Illinois, 23 in MPECs 2020-D91, 2020-D92, 2020-D93, 2020-D94 & 2020-D95 -- 2020 DT2, 2020 DS2, 2020 DR2, 2020 DR1, 2020 DP2, 2020 DM, 2020 CJ1, 2020 BO3, 2020 BJ9, 2020 BJ14, 2020 BD9, 2020 BD12, 2020 BC6, 2020 AU, 2016 TK, 2016 EY27, 2006 WF129, 2006 SO78, 2005 EQ70, 2003 MS2, 408792, 393908, 338049
`T05`	ATLAS Haleakala in Hawaii, 15 in MPEC 2020-D91 -- 2020 BZ11, 2020 BP14, 2019 XG1, 2009 AH16, 89830, 52768, 416591, 248926, 18172, 162080, 153267, 137199, 136993, 136795, 1866
`T08`	ATLAS Mauna Loa in Hawaii, 27 in MPEC 2020-D91 -- 2016 AX147, 2000 BO28, 90075, 65690, 54686, 531060, 512245, 512244, 500094, 492143, 436037, 30825, 243025, 163760, 162038, 159928, 152931, 152561, 138127, 137925, 11405, 11066, 106589, 106538, 8566, 4055, 2059
`I47`	Auger Obs. in Argentina, 1 in MPEC 2020-D93 -- 2020 DR2
`V00`	Bok Telescope in Arizona, 3 in MPECs 2020-D91 & 2020-D95 -- 2020 DT2, 2020 CP1, 2020 AS2
`Z84`	Calar Alto Schmidt in Spain, 5 in MPECs 2020-D91, 2020-D93, 2020-D94 & 2020-D95 -- 2020 DT2, 2020 DS2, 2020 DR2, 2020 DF2, 2020 DD2
`160`	Castelmartini Obs. in Italy, 8 in MPECs 2020-D91 & 2020-D93 -- 2020 DX, 2020 DR2, 2020 BZ12, 2020 BR10, 2016 AX147, 2015 BK509, 2008 EE5, 2003 OC3
`703`	Catalina Sky Survey (CSS) in Arizona, 4 in MPECs 2020-D91, 2020-D92 & 2020-D93 -- 2020 DR2, 2020 DP2, 142348, 137805
`K51`	Celado Obs. in Italy, 1 in MPEC 2020-D94 -- 2020 DS2
`807\|`	Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. in Chile, 1 in MPEC 2020-D92 -- 2020 DP2
`850`	Cordell-Lorenz Obs. in Tennessee, 2 in MPECs 2020-D92 & 2020-D93 -- 2020 DR2, 2020 DP2
`958`	Dax Obs. in France, 2 in MPECs 2020-D92 & 2020-D93 -- 2020 DR2, 2020 DP2
`734`	Farpoint Obs. in Kansas, 3 in MPECs 2020-D92, 2020-D93 & 2020-D94 -- 2020 DS2, 2020 DR2, 2020 DP2
`595`	Farra d'Isonzo Obs. in Italy, 2 in MPECs 2020-D92 & 2020-D93 -- 2020 DR2, 2020 DP2
`W46`	Foxfire Village Obs., 2 in MPECs 2020-D91 & 2020-D93 -- 2020 DR2, 248926
`X31`	Galilei Obs., 2 in MPECs 2020-D93 & 2020-D94 -- 2020 DS2, 2020 DR2
`203`	GiaGa Obs. in Italy, 1 in MPEC 2020-D92 -- 2020 DP2
`J95`	Great Shefford Obs. in England, 3 in MPECs 2020-D92, 2020-D93 & 2020-D94 -- 2020 DS2, 2020 DR2, 2020 DP2
`Z43`	Landehen Obs., 1 in MPEC 2020-D91 -- 2015 BK509
`K93`	LCO Sutherland C in South Africa, 1 in MPEC 2020-D93 -- 2020 DR2
`J136`	Martin Altman in Germany via the Liverpool Telescope in the Canary Islands, 1 in MPEC 2020-D91 -- 2020 AF3
`K30`	Luscherz Obs. in Switzerland, 1 in MPEC 2020-D92 -- 2020 DP2
`Z22`	MASTER IAC Obs. in the Canary Islands, 1 in MPEC 2020-D91 -- 1864
`568^`	R. Wainscoat on Mauna Kea in Hawaii, 11 in MPECs 2020-D91 & 2020-D92 -- 2020 DP2, 2020 CW1, 2020 CD2, 2020 BX10, 2020 BT15, 2020 BJ4, 2020 BH13, 2020 BG1, 2020 BF4, 2020 BE11, 2020 BD15
`V01`	Mountainville Obs. in Utah, 1 in MPEC 2020-D92 -- 2020 DP2
`474`	Mt. John Obs. in New Zealand, 1 in MPEC 2020-D94 -- 2020 DS2
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 10 in MPECs 2020-D91, 2020-D92, 2020-D94 & 2020-D95 -- 2020 DT2, 2020 DS2, 2020 DP2, 2020 BE2, 2008 CZ21, 409342, 35107, 329520, 159454, 102873
`K74`	Muensterschwarzach Obs. in Germany, 2 in MPECs 2020-D91 & 2020-D92 -- 2020 DP2, 154993
`J69`	North Obs. in England, 1 in MPEC 2020-D92 -- 2020 DP2
`Z80`	Northolt Branch Obs. in England, 2 in MPECs 2020-D91 & 2020-D92 -- 2020 DP2, 2020 DD2
`F51`	Pan-STARRS 1 (PS1) in Hawaii, 4 in MPEC 2020-D91 -- 2019 HH4, 511523, 141498, 136582
`F52`	Pan-STARRS 2 (PS2) in Hawaii, 3 in MPEC 2020-D91 -- 2020 CD2, 54686, 136582
`K63`	Pascoli Obs. in Italy, 1 in MPEC 2020-D92 -- 2020 DP2
`K19`	PASTIS Obs. in France, 1 in MPEC 2020-D93 -- 2020 DR2
`586`	Pic du Midi Obs. in France, 1 in MPEC 2020-D91 -- 2020 DG2
`6581`	Dave Balam via Plaskett 1.8m Telescope in British Columbia, 1 in MPEC 2020-D91 -- 2020 DH2
`654`	Pomona College Table Mtn. Obs. (PCTMO) in southern California, 2 in MPEC 2020-D91 -- 2020 DQ, 2020 CS2
`104`	San Marcello Pistoiese Obs. in Italy, 2 in MPECs 2020-D93 & 2020-D94 -- 2020 DS2, 2020 DR2
`H36`	Sandlot Obs. in Kansas, 3 in MPECs 2020-D92, 2020-D93 & 2020-D94 -- 2020 DS2, 2020 DR2, 2020 DP2
`C95`	SATINO-1 in France, 3 in MPECs 2020-D91, 2020-D92 & 2020-D93 -- 2020 DR2, 2020 DP2, 2003 SS84
`K96`	Savelli Obs., 2 in MPECs 2020-D92 & 2020-D93 -- 2020 DR2, 2020 DP2
`204`	Schiaparelli Obs. in Italy, 3 in MPECs 2020-D92, 2020-D93 & 2020-D94 -- 2020 DS2, 2020 DR2, 2020 DP2
`033`	Schwarzschild Obs. in Germany, 10 in MPECs 2020-D91, 2020-D92, 2020-D94 & 2020-D95 -- 2020 DT2, 2020 DS2, 2020 DP2, 2019 BO1, 2017 BP31, 2017 BM123, 2017 BE92, 2017 BB94, 2016 FG15, 2011 GD60
`G40!`	M. Kumrucu-Lohmiller in Massachusetts via Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2020-D91 -- 2017 BM123
`587`	Sormano Obs. in Italy, 5 in MPECs 2020-D91, 2020-D92, 2020-D93 & 2020-D94 -- 2020 DS2, 2020 DR2, 2020 DP2, 2020 DK2, 2020 DD2
`W34`	Squirrel Valley Obs. in North Carolina, 3 in MPECs 2020-D91 & 2020-D94 -- 2020 DS2, 2015 BK509, 99942
`I93`	St. Pardon de Conques Obs. in France, 3 in MPECs 2020-D92, 2020-D93 & 2020-D94 -- 2020 DS2, 2020 DR2, 2020 DP2
`I52`	Steward Obs. Mt. Lemmon Station in Arizona, 4 in MPECs 2020-D92, 2020-D93, 2020-D94 & 2020-D95 -- 2020 DT2, 2020 DS2, 2020 DR2, 2020 DP2
`A16`	Tentlingen Obs. in Switzerland, 2 in MPEC 2020-D91 -- 99248, 86450
`W33`	Transit Dreams Obs., 4 in MPEC 2020-D91 -- 65690, 52768, 35107, 103067
`T12`	UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2020-D91 -- 2020 BU13
`L01`	Visnjan Obs. in Croatia, 4 in MPECs 2020-D92, 2020-D93, 2020-D94 & 2020-D95 -- 2020 DT2, 2020 DS2, 2020 DR2, 2020 DP2
`C51`	WISE in Earth polar orbit, 2 in MPEC 2020-D91 -- 139289, 1866
`I41`	Zwicky Transient Facility (ZTF) in southern California, 13 in MPEC 2020-D91 -- 2020 BU12, 2019 XG1, 2017 DJ34, 2009 FU4, 2008 CZ21, 85490, 482244, 458732, 34613, 331769, 159454, 136582, 1627

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

Impact Risk Monitoring on 22 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 DR2	JPL Sentry	2333	2044-2117	35	2.0462585e-06	-2.53	-2.97	0	JPL: Computed at 14:59 today Pacific time based on 110 observations spanning 2.6239 days (2020-Feb-20.19345 to 2020-Feb-22.81739). Diameter approximately 0.584 km. from weighted mean H=18.82.

2020 DO2	NEODyS	1630	2067-2118	44	4.6e-06	-6.04	-6.48	0	NEODyS: "Based on 12 optical observations (of which 0 are rejected as outliers) from 2020-02-20.303 to 2020-02-21.501."

2020 BJ14	JPL Sentry	2002	2082-2087	2	2.30012e-06	-5.41	-5.42	0	JPL: Computed at 11:30 today Pacific time based on 82 observations spanning 21.847 days (2020-Jan-30.399864 to 2020-Feb-21.246972). Diameter approximately 0.048 km. from weighted mean H=24.26.

2020 BU13	JPL Sentry	2002	R E M O V E D						JPL: Risk listing removed at 1940 UTC today

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 22 February '20

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

2333	Noted that JPL Sentry has posted 2020 DR2 as an impact risk - see above
2200	Grabbed MPEC 2020-D93 - 2020 DR2 - see above Grabbed MPEC 2020-D94 - 2020 DS2 - see above Grabbed MPEC 2020-D95 - 2020 DT2 - see above
2002	Noted that JPL Sentry has updated its 2020 BJ14 risk assessment - see above Noted that JPL Sentry has removed 2020 BU13 as an impact risk - see above
1630	Noted that NEODyS has posted 2020 DO2 as an impact risk - see above Grabbed MPEC 2020-D91 - Daily Orbit Update - see above Grabbed MPEC 2020-D92 - 2020 DP2 - see above

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