2020-02-23 Tracking News

Contents on 23 February '20

IAU Minor Planet Center
- NEOCP Activity -- 21 listings
- New MPECs -- five MPECs
Observers -- 30 observers
Impact Risk Monitoring -- four objects
Chronology

Asteroid/Comet Connection (A/CC) Resources:

Consolidated Risk Tables - the CRT page
Of 1108 risk-listed objects, 65 have had news in the last 31 days. Updated at 1736 UTC on 23 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 23 February '20

The MPC's NEO Confirmation Page has 21 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 21 objects listed. Of these, nine were "one nighters." So far The Tracking News has counted a total of 32 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 23 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-D96 time-stamped "08:52 UT" - 2020 DV2 - see below
MPEC 2020-D97 time-stamped "12:16 UT" - Daily Orbit Update - see below
MPEC 2020-D98 time-stamped "19:19 UT" - 2020 DX2 - see below
MPEC 2020-D99 time-stamped "20:08 UT" - 2020 DY2 - see below
MPEC 2020-D100 time-stamped "22:46 UT" - 2020 DZ2

MPEC 2020-D100 - "22:46 UT" - 2020 DZ2

K20D02Z 2020 DZ2 (small asteroid, H=24.1 ~51m) was picked up at 0711 UT on 20 Feb. by the Bok Telescope, observing it at Feb. 20.30-32p4. This detection was confirmed by the Mt. Lemmon Survey (MLS) (Feb. 20.41p3 at G=21.9-22.2), Visnjan Obs. (Feb. 20.81-84p5 at G=21.8-22.2), Astronomical Research Obs. Westfield (Feb. 21.19-21p3 at V=22.1-2), and the Spacewatch 1.8m telescope (Feb. 21.22-26p2 at R=21.6-22.1).

MPEC 2020-D99 - "20:08 UT" - 2020 DY2

K20D02Y 2020 DY2 (small asteroid, Earth MOID=1.5 LD, H=25.1 ~32m) was picked up at 1114 UT on 20 Feb. by MLS, observing it at Feb. 20.47-48p3. This detection was confirmed by Steward Obs. Mt. Lemmon Station (Feb. 20.52-53p4), Visnjan Obs. (Feb. 21.06-12p4), Robert Holmes via Cerro Tololo Inter-American Obs. (CTIO) (Feb. 21.35-36p3), R. Wainscoat on Mauna Kea (Feb. 21.60p2), and Mt. John Obs. (Feb. 23.61-62p3).

MPEC 2020-D98 - "19:19 UT" - 2020 DX2

K20D02X 2020 DX2 (small asteroid, H=23.6 ~65m) was picked up at 0844 UT on 20 Feb. by MLS, observing it at Feb. 20.36-38p3 and 20.51p4. This detection was confirmed by Visnjan Obs. (Feb. 21.08-09p3), LCO Cerro Tololo A (Feb. 21.29-30p3), Holmes/CTIO (Feb. 21.30p3), and Mt. John Obs. (Feb. 23.60-61p5).

<< DOU on 23 February '20 >> MPEC 2020-D97 - "12:16 UT" - Daily Orbit Update

Observations of risk-listed objects
K20D02R 2020 DR2 (arc=3 days, H=18.8 ~589m) from San Marcello Pistoiese Obs. (Feb. 22.88-89p3)
K20C02K 2020 CK2 (small asteroid, arc=5 days, H=29.3 ~5m, close passer, NHATS target) from UH/Tholen NEO Follow-Up 2.24m Telescope (Feb. 19.65p1 at G=22.73)
99942 99942 Apophis (2004 MN4) (NHATS target) from Haute Provence Obs. (Feb. 20.84p3 & 22.78-81p10)
Observations of close-passing objects
K20D01Z 2020 DZ1 (arc=5 days, H=24.0 ~54m) from ATLAS Mauna Loa (Feb. 22.45-47p4) and Squirrel Valley Obs. (Feb. 23.12-15p5)
K20D00M 2020 DM (arc=6 days, H=26.9 ~14m) from ARO Westfield (Feb. 22.19-20p3 at V=22.7-9)
Observation campaigns (NHATS targets, radar support)
K20D01T 2020 DT1 (arc=5 days, H=24.1 ~51m, NHATS) from ARO Westfield (Feb. 22.17-18p3)
K18K01P 2018 KP1 (arc=3 opp, H=25.1 ~32m, NHATS) from ARO Westfield (Feb. 22.28-29p3 at V=22.3-7)
K17BC3M 2017 BM123 (arc=3 opp, H=23.8 ~59m, NHATS, radar) from Landehen Obs. (Feb. 20.91-94p5), Castelmartini Obs. (Feb. 21.91-92p3), M. Kumrucu-Lohmiller via Slooh.com Canary Islands Obs. (Feb. 22.10-12p3), ATLAS Mauna Loa (Feb. 22.40-43p4), and program code 1 via Kitab Obs. (Feb. 22.96p3)
K16T00K 2016 TK (arc=2 opp, H=23.3 ~74m, NHATS) from ARO Westfield (Feb. 22.09-10p3 at V=22.4-5)
-- NHATS target table -- Planetary radar schedules: Arecibo & Goldstone
Observations of small asteroids (H>22.0)
K20B03O 2020 BO3 (arc=32 days, H=23.4 ~71m) from ARO Westfield (Feb. 22.04-05p4 at V=22.0-22.5)
K15Bo9K 2015 BK509 (arc=2 opp, H=22.5 ~107m) from Lumezzane Obs. (Feb. 20.91-92p4), ATLAS Mauna Loa (Feb. 22.37-39p4), and Foxfire Village Obs. (Feb. 23.05-06p3)
Observations of other objects
K20D02P 2020 DP2 (Q=4.678 AU, arc=2 days, H=21.5 ~170m) from ATLAS Mauna Loa (Feb. 22.45-47p4)
K20D00X 2020 DX from Foxfire Village Obs. (Feb. 23.08p3)
K20C02L 2020 CL2 (q=0.363 AU, arc=18 days, H=19.5 ~426m) from ATLAS Mauna Loa (Feb. 22.44-47p4)
K20B16B 2020 BB16 (arc=33 days, H=20.3 ~295m) from Lumezzane Obs. (Feb. 20.83-84p2)
K20B12Z 2020 BZ12 (i=165.5°, Q=14.797 AU, arc=34 days, H=18.2 ~776m) from Kitab Obs./code 1 (Feb. 22.69-70p6)
K20B02E 2020 BE2 (arc=34 days, H=20.2 ~309m) from ATLAS Mauna Loa (Feb. 22.49-51p4)
K19Y06R 2019 YR6 (arc=56 days, H=21.1 ~204m) from ARO Westfield (Feb. 22.06-07p3 at V=22.0-22.2)
K19X01G 2019 XG1 (Q=4.163 AU, arc=2 opp, H=19.2 ~490m) from Castelmartini Obs. (Feb. 21.94-95p3)
K19W06B 2019 WB6 (arc=89 days, H=20.6 ~257m) from ATLAS Mauna Loa (Feb. 22.49-52p4)
K17X00D 2017 XD (i=38.4°, q=0.361 AU, arc=7 opp, H=17.5 ~1.07 km) from ATLAS Haleakala (Feb. 22.26-29p5)
K16U80T 2016 UT80 (arc=3 opp, H=19.0 ~537m) from ATLAS Mauna Loa (Feb. 22.32-35p5)
K16Q00D 2016 QD (arc=3 opp, H=18.9 ~562m) from ARO Westfield (Feb. 22.11-12p3 at V=22.1-3)
K15S02V 2015 SV2 (arc=3 opp, H=20.8 ~234m) from ARO Westfield (Feb. 22.25-26p3 at V=22.1-3)
K15PM8Z 2015 PZ228 (i=47.6°, arc=2 opp, H=18.2 ~776m) from SATINO-1 (Feb. 14.03-06p2)
K15O35L 2015 OL35 (Q=4.255 AU, arc=2 opp, H=18.1 ~812m) from ATLAS Mauna Loa (Feb. 22.25-27p4)
K15F37E 2015 FE37 (q=0.234 AU, arc=3 opp, H=20.1 ~323m) from ARO Westfield (Feb. 22.04-06p3 at V=22.1)
K13V05K 2013 VK5 (arc=3 opp, H=20.5 ~269m) from ARO Westfield (Feb. 22.13-15p4 at V=22.2-4)
K09A16H 2009 AH16 (arc=8 opp, H=17.7 ~977m) from the Zwicky Transient Facility (ZTF) (Feb. 20.29-32p2 & 20.39-41p2)
K08E05E 2008 EE5 (i=44.8°, arc=4 opp, H=19.7 ~389m) from ATLAS Mauna Loa (Feb. 22.25-27p4) and Castelmartini Obs. (Feb. 22.78-79p3)
K06WC9F 2006 WF129 (Q=4.051 AU, arc=3 opp, H=19.0 ~537m) from ARO Westfield (Feb. 22.12-13p3 at V=22.2-5)
K05S00Q 2005 SQ (arc=4 opp, H=20.1 ~323m) from ATLAS Mauna Loa (Feb. 22.38-40p4)
K03O03C 2003 OC3 (arc=5 opp, H=18.7 ~616m) from Gravina Obs. (Feb. 22.75-78p4) and Foxfire Village Obs. (Feb. 23.07p3)
q5364 525364 2005 CL7 from Castelmartini Obs. (Feb. 22.84p3)
p2245 512245 2016 AU8 from Castelmartini Obs. (Feb. 22.93-94p3)
o6459 506459 2002 AL14 from ATLAS Mauna Loa (Feb. 22.61-63p5)
o0094 500094 2012 BC20 from Lumezzane Obs. (Feb. 20.89p4) and ATLAS Mauna Loa (Feb. 22.54-55p3)
i8818 448818 2011 UU20 from Wishing Star Obs. (Feb. 23.05-06p3)
f3038 413038 2001 MF1 from ARO Westfield (Feb. 22.22-23p2 at V=22.0-22.3)
d1275 391275 2006 SJ134 from Lumezzane Obs. (Feb. 20.77-78p3)
b4188 374188 2005 AD3 from Castelmartini Obs. (Feb. 22.90p3)
Z3947 353947 1999 CT8 from Lumezzane Obs. (Feb. 20.90p4) and ATLAS Mauna Loa (Feb. 22.49-52p6)
R7810 277810 2006 FV35 from ARO Westfield (Feb. 22.36-37p3 at V=21.6-22.4)
O3025 243025 2006 UM216 from Castelmartini Obs. (Feb. 22.83p3)
O2147 242147 2003 BH84 from ARO Westfield (Feb. 22.14-15p3 at V=22.1-5)
G3694 163694 2003 DP13 from Tentlingen Obs. (Feb. 21.98-02p4)
G2080 162080 1998 DG16 from Lumezzane Obs. (Feb. 20.95-96p3)
F9454 159454 2000 DJ8 from ATLAS Mauna Loa (Feb. 22.34-36p4) and Castelmartini Obs. (Feb. 22.90-91p3)
F4029 154029 2002 CY46 from ATLAS Mauna Loa (Feb. 22.43-46p4)
E1052 141052 2001 XR1 from ATLAS Mauna Loa (Feb. 22.25-27p4)
D8846 138846 2000 VJ61 from ATLAS Mauna Loa (Feb. 22.22-24p5)
D8013 138013 2000 CN101 from Lumezzane Obs. (Feb. 20.79-80p3), Tentlingen Obs. (Feb. 21.88-92p3), and Castelmartini Obs. (Feb. 22.88-89p3)
A6589 106589 2000 WN107 from Castelmartini Obs. (Feb. 22.77p3)
A6538 106538 2000 WK63 from Castelmartini Obs. (Feb. 22.76p3)
90075 90075 2002 VU94 from Castelmartini Obs. (Feb. 22.94p3)
85628 85628 1998 KV2 from ATLAS Mauna Loa (Feb. 22.49-50p3)
68350 68350 2001 MK3 from ATLAS Mauna Loa (Feb. 22.61-63p4)
52768 52768 1998 OR2 from Squirrel Valley Obs. (Feb. 23.08-10p4)
36284 36284 2000 DM8 from ATLAS Mauna Loa (Feb. 22.38-41p8)
35107 35107 1991 VH from AAAA Buenos Aires Obs. (Feb. 1.15-18p2) and ATLAS Mauna Loa (Feb. 22.53-55p4)
34613 34613 2000 UR13 from Lumezzane Obs. (Feb. 20.81-82p3), ATLAS Mauna Loa (Feb. 22.37-39p4), and Castelmartini Obs. (Feb. 22.92-93p3)
30825 30825 1990 TG1 from ATLAS Mauna Loa (Feb. 22.28-30p4) and Castelmartini Obs. (Feb. 22.81p3)
18172 18172 2000 QL7 from Castelmartini Obs. (Feb. 22.91-92p3) and Wishing Star Obs. (Feb. 23.02p3)
11405 11405 1999 CV3 from ATLAS Mauna Loa (Feb. 22.27-29p4) and Castelmartini Obs. (Feb. 22.80-81p3)
07088 7088 Ishtar (1992 AA) from ATLAS Mauna Loa (Feb. 22.49-52p4)
06239 6239 Minos (1989 QF) from ATLAS Mauna Loa (Feb. 22.22-24p5)
05693 5693 1993 EA from Tentlingen Obs. (Feb. 22.03-07p6) and ATLAS Mauna Loa (Feb. 22.49-52p4)
05626 5626 1991 FE from ATLAS Mauna Loa (Feb. 22.38-40p4)
03752 3752 Camillo (1985 PA) from ATLAS Mauna Loa (Feb. 22.66p4)
01864 1864 Daedalus (1971 FA) from MASTER-II Tunka (Feb. 21.81-83p2) and ATLAS Mauna Loa (Feb. 22.54-57p4)
01627 1627 Ivar (1929 SH) from ATLAS Mauna Loa (Feb. 22.38-40p3) and Wishing Star Obs. (Feb. 23.10-13p3)

MPEC 2020-D96 - "08:52 UT" - 2020 DV2

K20D02V 2020 DV2 (small asteroid, H=25.3 ~29m) was picked up at 0632 UT on 21 Feb. by Bok Tel., observing it at Feb. 21.27-28p8. This detection was confirmed by MLS (Feb. 21.33p2), Visnjan Obs. (Feb. 21.91-92p3), Schwarzschild Obs. (Feb. 22.09p3), and ARO Westfield (Feb. 23.27-28p3).

Observers on 23 February '20

A total of 30 observers appear in today's MPECs.

Code	Observer / observatory
`834`	AAAA Buenos Aires Obs. in Argentina, 1 in MPEC 2020-D97 -- 35107
`H21`	Astronomical Research Obs. Westfield in Illinois, 16 in MPECs 2020-D96, 2020-D97 & 2020-D100 -- 2020 DZ2, 2020 DV2, 2020 DT1, 2020 DM, 2020 BO3, 2019 YR6, 2018 KP1, 2016 TK, 2016 QD, 2015 SV2, 2015 FE37, 2013 VK5, 2006 WF129, 413038, 277810, 242147
`T05`	ATLAS Haleakala in Hawaii, 1 in MPEC 2020-D97 -- 2017 XD
`T08`	ATLAS Mauna Loa in Hawaii, 32 in MPEC 2020-D97 -- 2020 DZ1, 2020 DP2, 2020 CL2, 2020 BE2, 2019 WB6, 2017 BM123, 2016 UT80, 2015 OL35, 2015 BK509, 2008 EE5, 2005 SQ, 85628, 68350, 506459, 500094, 36284, 353947, 35107, 34613, 30825, 159454, 154029, 141052, 138846, 11405, 7088, 6239, 5693, 5626, 3752, 1864, 1627
`V00`	Bok Telescope in Arizona, 2 in MPECs 2020-D96 & 2020-D100 -- 2020 DZ2, 2020 DV2
`160`	Castelmartini Obs. in Italy, 16 in MPEC 2020-D97 -- 2019 XG1, 2017 BM123, 2008 EE5, 90075, 525364, 512245, 374188, 34613, 30825, 243025, 18172, 159454, 138013, 11405, 106589, 106538
`807\|`	Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 2 in MPECs 2020-D98 & 2020-D99 -- 2020 DY2, 2020 DX2
`W46`	Foxfire Village Obs., 3 in MPEC 2020-D97 -- 2020 DX, 2015 BK509, 2003 OC3
`K73`	Gravina Obs. in Italy, 1 in MPEC 2020-D97 -- 2003 OC3
`511`	Haute Provence Obs. in Germany, 1 in MPEC 2020-D97 -- 99942
`1861`	program code 1 via Kitab Obs., 2 in MPEC 2020-D97 -- 2020 BZ12, 2017 BM123
`Z43`	Landehen Obs., 1 in MPEC 2020-D97 -- 2017 BM123
`W85`	LCO Cerro Tololo A in Chile, 1 in MPEC 2020-D98 -- 2020 DX2
`130`	Lumezzane Obs. in Italy, 8 in MPEC 2020-D97 -- 2020 BB16, 2015 BK509, 500094, 391275, 353947, 34613, 162080, 138013
`C94`	MASTER-II Tunka in Russia, 1 in MPEC 2020-D97 -- 1864
`568^`	R. Wainscoat on Mauna Kea in Hawaii, 1 in MPEC 2020-D99 -- 2020 DY2
`474`	Mt. John Obs. in New Zealand, 2 in MPECs 2020-D98 & 2020-D99 -- 2020 DY2, 2020 DX2
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 4 in MPECs 2020-D96, 2020-D98, 2020-D99 & 2020-D100 -- 2020 DZ2, 2020 DY2, 2020 DX2, 2020 DV2
`104`	San Marcello Pistoiese Obs. in Italy, 1 in MPEC 2020-D97 -- 2020 DR2
`C95`	SATINO-1 in France, 1 in MPEC 2020-D97 -- 2015 PZ228
`033`	Schwarzschild Obs. in Germany, 1 in MPEC 2020-D96 -- 2020 DV2
`G40!`	M. Kumrucu-Lohmiller in Massachusetts via Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2020-D97 -- 2017 BM123
`291`	Spacewatch 1.8m telescope in Arizona, 1 in MPEC 2020-D100 -- 2020 DZ2
`W34`	Squirrel Valley Obs. in North Carolina, 2 in MPEC 2020-D97 -- 2020 DZ1, 52768
`I52`	Steward Obs. Mt. Lemmon Station in Arizona, 1 in MPEC 2020-D99 -- 2020 DY2
`A16`	Tentlingen Obs. in Switzerland, 3 in MPEC 2020-D97 -- 163694, 138013, 5693
`T12`	UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2020-D97 -- 2020 CK2
`L01`	Visnjan Obs. in Croatia, 4 in MPECs 2020-D96, 2020-D98, 2020-D99 & 2020-D100 -- 2020 DZ2, 2020 DY2, 2020 DX2, 2020 DV2
`I15`	Wishing Star Obs. in Rhode Island, 3 in MPEC 2020-D97 -- 448818, 18172, 1627
`I41`	Zwicky Transient Facility in southern California, 1 in MPEC 2020-D97 -- 2009 AH16

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

Impact Risk Monitoring on 23 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	1735	2044-2114	31	2.1178379e-06	-2.51	-2.93	0	JPL: Computed at 09:03 today Pacific time based on 113 observations spanning 2.6916 days (2020-Feb-20.19345 to 2020-Feb-22.88509). Diameter approximately 0.584 km. from weighted mean H=18.81.
2020 DR2	NEODyS	1650	2062-2114	23	1.53e-06	-2.66	-3.03	0	NEODyS: "Based on 111 optical observations (of which 1 are rejected as outliers) from 2020-02-20.194 to 2020-02-22.818."

2020 CK2	JPL Sentry	1735	2063-2118	60	0.002426155652	-4.79	-4.90	0	JPL: Computed at 09:06 today Pacific time based on 24 observations spanning 5.1459 days (2020-Feb-14.50537 to 2020-Feb-19.651233). Diameter approximately 0.005 km. from weighted mean H=29.26.

2020 BU13	NEODyS	1650	R E M O V E D						-

2020 BH	JPL Sentry	0033	2104-2111	3	2.2276e-05	-6.67	-6.83	0	JPL: Computed at 16:03 Feb. 22nd Pacific time based on 58 observations spanning 28.060 days (2020-Jan-18.33189 to 2020-Feb-15.39195). Diameter approximately 0.008 km. from weighted mean H=28.23.

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 23 February '20

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

2302	Grabbed MPEC 2020-D100 - 2020 DZ2 - see above
2120	Grabbed MPEC 2020-D99 - 2020 DY2 - see above
2001	Grabbed MPEC 2020-D98 - 2020 DX2 - see above
1735	Noted that JPL Sentry has updated its 2020 CK2 risk assessment - see above Noted that JPL Sentry has updated its 2020 DR2 risk assessment - see above
1650	Noted that NEODyS has removed 2020 BU13 as an impact risk - see above Noted that NEODyS has posted 2020 DR2 as an impact risk - see above Grabbed MPEC 2020-D96 - 2020 DV2 - see above Grabbed MPEC 2020-D97 - Daily Orbit Update - see above
0033	Noted that JPL Sentry has updated its 2020 BH risk assessment - see above

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