2020-09-01 Tracking News

Contents on 1 September '20

IAU Minor Planet Center
- NEOCP Activity -- 26 listings
- New MPECs -- two MPECs
Observers -- 20 observers
Impact Risk Monitoring -- seven objects
Chronology

Asteroid/Comet Connection (A/CC) Resources:

Consolidated Risk Tables - the CRT page
Of 1155 risk-listed objects, 135 have had news in the last 31 days. Updated at 1936 UTC on 1 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 1 September '20

The MPC's NEO Confirmation Page has 26 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 26 objects listed. Of these, eighteen 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 1 September '20

Minor Planet Electronic Circulars

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

MPEC 2020-R01 time-stamped "00:08 UT" - 2020 QX6 - see below
MPEC 2020-R02 time-stamped "12:05 UT" - Daily Orbit Update

<< DOU on 1 September '20 >> MPEC 2020-R02 - "12:05 UT" - Daily Orbit Update

Observations of risk-listed objects
K10R91A 2010 RA91 (NHATS target) from the Zwicky Transient Facility (ZTF) (2010 Sept. 23.28p1 & 2010 Sept. 23.33p1)
Observations of recently (no longer) risk-listed objects
K20P00S 2020 PS (small asteroid, arc=19 days, H=24.6 ~41m, close passer) from Castelmartini Obs. (Aug. 23.05p4)
Observations of close-passing objects
K20Q06A 2020 QA6 (arc=9 days, H=26.2 ~19m, NHATS target) from Great Shefford Obs. (Aug. 31.92p2)
K20Q05G 2020 QG5 (Q=4.203 AU, arc=15 days, H=25.7 ~25m) from Great Shefford Obs. (Aug. 31.86-89p5)
Observations of small asteroids (H>22.0)
K20Q06V 2020 QV6 (q=0.317 AU, arc=4 days, H=22.5 ~107m) from Great Shefford Obs. (Aug. 31.85p5)
K20Q05S 2020 QS5 (q=0.373 AU, Q=4.732 AU, arc=7 days, H=22.2 ~123m) from Pomona College Table Mtn. Obs. (PCTMO) (Aug. 31.33-36p2)
K20Q04O 2020 QO4 (arc=10 days, H=22.1 ~129m) from Great Shefford Obs. (Aug. 31.89-91p4)
K20Q03E 2020 QE3 (arc=18 days, H=25.2 ~31m) from PCTMO (Aug. 31.23-30p3)
K02U12Q 2002 UQ12 (arc=3 opp, H=22.2 ~123m) from UH/Tholen NEO Follow-Up 2.24m Telescope (2016 Sept. 30.46p1 at G=22.40 & 2016 Oct. 2.54-55p2 at G=22.11-24)
Observations of other objects
K20Q04H 2020 QH4 (i=55.0°, Q=5.814 AU, arc=10 days, H=19.8 ~371m) from PCTMO (Aug. 31.22-29p3)
K17H03N 2017 HN3 (arc=3 opp, H=21.6 ~162m) from SATINO-1 (Aug. 30.85-87p2)
K16N38V 2016 NV38 (Q=4.020 AU, arc=2 opp, H=18.6 ~645m) from Castelmartini Obs. (Aug. 23.01-02p3)
K16E85D 2016 ED85 (Q=5.064 AU, arc=3 opp, H=17.7 ~977m) from ATLAS Mauna Loa (Aug. 31.47-48p4)
K14Qh3L 2014 QL433 (arc=4 opp, H=19.9 ~355m) from Castelmartini Obs. (Aug. 22.98-99p3)
K14N64E 2014 NE64 (i=41.6°, arc=3 opp, H=18.9 ~562m) from Castelmartini Obs. (Aug. 22.92-93p3)
K07VD7X 2007 VX137 (arc=5 opp, H=18.5 ~676m) from Castelmartini Obs. (Aug. 23.04-05p3) and ATLAS Mauna Loa (Aug. 31.44-46p4)
q3781 523781 2015 BV92 from program code "!" (10) via DECam (2015 March 14.35-36p3)
q3707 523707 2014 JM25 from Pan-STARRS 1 (PS1) (Aug. 14.50-52p4)
m8640 488640 2003 FR6 from Pan-STARRS 2 (PS2) (Aug. 27.37-39p4 & 29.35-39p3)
k6130 466130 2012 FZ23 from PS1 (Aug. 18.28-32p4 at w=22.0-22.3)
k5824 465824 2010 FR from QOS Obs. (Aug. 30.90-91p3) and Northolt Branch Obs. (Aug. 31.91-93p4)
g8086 428086 2006 NM from ATLAS Haleakala (Aug. 31.57-59p4)
g0302 420302 2011 XZ1 from Castelmartini Obs. (Aug. 23.00p3) and program code 1 via Kuban State Univ. Obs. (Aug. 31.71-83p43)
f1165 411165 2010 DF1 from Castelmartini Obs. (Aug. 23.01p3)
c2625 382625 2002 PC130 from Castelmartini Obs. (Aug. 22.95p3)
a1123 361123 2006 GW2 from PS1 (Aug. 11.35-38p4)
Z7058 357058 2001 OG25 from ATLAS Mauna Loa (Aug. 31.49-50p2 & 31.55-56p2)
Z4952 354952 2006 FJ9 from PS1 (Aug. 22.36-39p4) and Castelmartini Obs. (Aug. 22.96-97p3)
U8043 308043 2004 TH10 from Castelmartini Obs. (Aug. 22.88p2)
S5990 285990 2001 SK9 from QOS Obs. (Aug. 28.92-93p5)
L7430 217430 2005 SN25 from Santa Maria de Montmagastrell Obs. (Aug. 17.08-09p3)
I9630 189630 2001 LE6 from PS2 (Aug. 24.36-40p8)
G2980 162980 2001 RR17 from PS2 (Aug. 13.36-39p3)
G2173 162173 Ryugu (1999 JU3) from PS1 (Aug. 18.44-48p3)
F9856 159856 2004 JW6 from ATLAS Mauna Loa (Aug. 31.58-60p4)
F3842 153842 2001 XT30 from DECam/code "!" (10) (2019 Aug. 7.06-10p4)
E5656 145656 4788 P-L from ATLAS Mauna Loa (Aug. 31.45-46p4)
E4411 144411 2004 EW9 from WISE (Aug. 29.80p1, 29.93p1, 30.20p1, 30.26p2, 30.33p1, 30.39p1, 30.46p1, 30.52p1, 30.78p1 & 31.05p1) and ATLAS Haleakala (Aug. 31.58-61p8)
D6900 136900 1998 HL49 from Castelmartini Obs. (Aug. 22.91p3)
A6538 106538 2000 WK63 from Castelmartini Obs. (Aug. 22.97-98p3)
A5140 105140 2000 NL10 from ATLAS Haleakala (Aug. 31.36-39p3)
96744 96744 1999 OW3 from ATLAS Mauna Loa (Aug. 31.46-49p4)
90147 90147 2002 YK14 from ATLAS Haleakala (Aug. 31.30-33p4)
90075 90075 2002 VU94 from ATLAS Mauna Loa (Aug. 31.23-25p4)
88264 88264 2001 KN20 from ATLAS Mauna Loa (Aug. 31.58-61p4)
87684 87684 2000 SY2 from ATLAS Mauna Loa (Aug. 31.59-61p4)
87311 87311 2000 QJ1 from Castelmartini Obs. (Aug. 22.90p2)
86667 86667 2000 FO10 from PS2 (June 7.32-33p2)
85804 85804 1998 WQ5 from Castelmartini Obs. (Aug. 22.95-96p3)
85275 85275 1994 LY from roving observer (Aug. 14.19-22p5, 15.18-27p12, 16.14-22p9 & 17.17-28p13) and SONEAR (Aug. 31.03-04p3 & Sept. 1.13p3)
68350 68350 2001 MK3 from ATLAS Mauna Loa (May 13.40-41p4)
66008 66008 1998 QH2 from Castelmartini Obs. (Aug. 22.91-92p3)
53435 53435 1999 VM40 from ATLAS Mauna Loa (Aug. 31.58-60p4)
53430 53430 1999 TY16 from PS2 (Aug. 1.35-40p4)
23606 23606 1996 AS1 from DECam/code "!" (10) (2015 March 14.37-38p3)
19764 19764 2000 NF5 from ATLAS Mauna Loa (Aug. 31.43-44p3) and Kuban State Univ. Obs./code 1 (Aug. 31.84-95p78)
11405 11405 1999 CV3 from ATLAS Mauna Loa (Aug. 31.23-25p4)
07088 7088 Ishtar (1992 AA) from ATLAS Mauna Loa (May 12.34-36p4)
04055 4055 Magellan (1985 DO2) from ATLAS Mauna Loa (Aug. 31.49p1 & 31.56-57p2)
03753 3753 Cruithne (1986 TO) from ATLAS Mauna Loa (Aug. 31.60-63p4)
00887 887 Alinda (1918 DB) from ATLAS Mauna Loa (Aug. 31.42-44p4)

MPEC 2020-R01 - "00:08 UT" - 2020 QX6

K20Q06X 2020 QX6 (Earth MOID=0.5 LD, H=28.8 ~6m) was picked up at 0816 UT on 28 Aug. by the Mt. Lemmon Survey (MLS), observing it at Aug. 28.34-36p4 and 29.38p2. This detection was confirmed by Steward Obs. Mt. Lemmon Station (Aug. 28.43p3 at G=21.8-22.2).

Observers on 1 September '20

A total of 20 observers appear in today's MPECs.

Code	Observer / observatory
`T05`	ATLAS Haleakala in Hawaii, 4 in MPEC 2020-R02 -- 90147, 428086, 144411, 105140
`T08`	ATLAS Mauna Loa in Hawaii, 17 in MPEC 2020-R02 -- 2016 ED85, 2007 VX137, 96744, 90075, 88264, 87684, 68350, 53435, 357058, 19764, 159856, 145656, 11405, 7088, 4055, 3753, 887
`160`	Castelmartini Obs. in Italy, 15 in MPEC 2020-R02 -- 2020 PS, 2016 NV38, 2014 QL433, 2014 NE64, 2007 VX137, 87311, 85804, 66008, 420302, 411165, 382625, 354952, 308043, 136900, 106538
`W84!`	program code "!" (10) via DECam in Chile, 3 in MPEC 2020-R02 -- 523781, 23606, 153842
`J95`	Great Shefford Obs. in England, 4 in MPEC 2020-R02 -- 2020 QV6, 2020 QO4, 2020 QG5, 2020 QA6
`C401`	program code 1 via Kuban State Univ. Obs. in Russia, 2 in MPEC 2020-R02 -- 420302, 19764
`G96`	Mt. Lemmon Survey in Arizona, 1 in MPEC 2020-R01 -- 2020 QX6
`Z80`	Northolt Branch Obs. in England, 1 in MPEC 2020-R02 -- 465824
`F51`	Pan-STARRS 1 (PS1) in Hawaii, 5 in MPEC 2020-R02 -- 523707, 466130, 361123, 354952, 162173
`F52`	Pan-STARRS 2 (PS2) in Hawaii, 5 in MPEC 2020-R02 -- 86667, 53430, 488640, 189630, 162980
`654`	Pomona College Table Mtn. Obs. (PCTMO) in southern California, 3 in MPEC 2020-R02 -- 2020 QS5, 2020 QH4, 2020 QE3
`L18`	QOS Obs., 2 in MPEC 2020-R02 -- 465824, 285990
`247`	roving observer, 1 in MPEC 2020-R02 -- 85275
`B74`	Santa Maria de Montmagastrell Obs. in Spain, 1 in MPEC 2020-R02 -- 217430
`C95`	SATINO-1 in France, 1 in MPEC 2020-R02 -- 2017 HN3
`Y00`	SONEAR in Brazil, 1 in MPEC 2020-R02 -- 85275
`I52`	Steward Obs. Mt. Lemmon Station in Arizona, 1 in MPEC 2020-R01 -- 2020 QX6
`T12`	UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2020-R02 -- 2002 UQ12
`C51`	WISE in Earth polar orbit, 1 in MPEC 2020-R02 -- 144411
`I41`	Zwicky Transient Facility in southern California, 1 in MPEC 2020-R02 -- 2010 RA91

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

Impact Risk Monitoring on 1 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 PG6	JPL Sentry	1935	2029-2048	10	0.00038174857	-3.79	-3.79	0	JPL: Computed at 07:34 Aug. 23rd Pacific time based on 25 observations spanning 10.555 days (2020-Aug-11.36766 to 2020-Aug-21.923096). Diameter approximately 0.013 km. from weighted mean H=27.02.

2019 QR3	JPL Sentry	1935	2073-2088	19	0.000243857487	-4.73	-5.08	0	JPL: Computed at 07:04 Aug. 30th of 2019 Pacific time based on 19 observations spanning 2.2452 days (2019-Aug-27.27806 to 2019-Aug-29.523213). Diameter approximately 0.013 km. from weighted mean H=27.13.

2019 EF	JPL Sentry	1935	2117-2117	1	2.641e-08	-8.47	-8.47	0	JPL: Computed at 07:36 March 22nd of 2019 Pacific time based on 60 observations spanning 11.123 days (2019-Mar-01.37381 to 2019-Mar-12.497194). Diameter approximately 0.016 km. from weighted mean H=26.63.

2018 RF5	JPL Sentry	1935	2103-2115	3	8.392e-06	-6.54	-6.64	0	JPL: Computed at 06:29 Sept. 16th of 2019 Pacific time based on 55 observations spanning 9.2061 days (2018-Sep-10.09301 to 2018-Sep-19.299119). Diameter approximately 0.011 km. from weighted mean H=27.36.

2014 HE197	JPL Sentry	1800	2028-2098	22	6.1371e-09	-8.12	-9.10	0	JPL: Computed at 01:44 April 10th of 2017 Pacific time based on 16 observations spanning 2.0503 days (2014-Apr-23.29183 to 2014-Apr-25.34216). Diameter approximately 0.027 km. from weighted mean H=25.52.

2010 RA91	NEODyS	1700	2115	1	7.25e-09	-7.78	-7.78	0	NEODyS: "Based on 105 optical observations (of which 1 are rejected as outliers) from 2010-09-03.486 to 2010-10-04.087."

2009 EH1	JPL Sentry	1800	2051-2051	1	1.547e-09	-10.01	-10.01	0	JPL: Computed at 18:06 April 11th of 2017 Pacific time based on 21 observations spanning 2.6511 days (2009-Mar-03.25773 to 2009-Mar-05.90881). Diameter approximately 0.009 km. from weighted mean H=27.86.

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 1 September '20

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

1935	Noted that JPL Sentry has updated its 2018 RF5 risk assessment - see above Noted that JPL Sentry has updated its 2019 EF risk assessment - see above Noted that JPL Sentry has updated its 2019 QR3 risk assessment - see above Noted that JPL Sentry has updated its 2020 PG6 risk assessment - see above
1800	Noted that JPL Sentry has updated its 2009 EH1 risk assessment - see above Noted that JPL Sentry has updated its 2014 HE197 risk assessment - see above
1700	Noted that NEODyS has updated its 2010 RA91 risk assessment - see above Grabbed MPEC 2020-R02 - Daily Orbit Update - see above
0100	Grabbed MPEC 2020-R01 - 2020 QX6 - see above

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