2020-09-02 Tracking News

Contents on 2 September '20

IAU Minor Planet Center
- NEOCP Activity -- 22 listings
- New MPECs -- one MPEC
Observers -- fifteen observers
Impact Risk Monitoring -- four objects
Chronology

Asteroid/Comet Connection (A/CC) Resources:

Consolidated Risk Tables - the CRT page
Of 1155 risk-listed objects, 136 have had news in the last 31 days. Updated at 1801 UTC on 2 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 2 September '20

The MPC's NEO Confirmation Page has 22 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 22 objects listed. Of these, fourteen were "one nighters." So far The Tracking News has counted a total of 26 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 2 September '20

Minor Planet Electronic Circulars

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

<< DOU on 2 September '20 >> MPEC 2020-R03 - "12:05 UT" - Daily Orbit Update

Observations of risk-listed objects
K20Q01N 2020 QN1 (small asteroid, arc=28 days, H=23.1 ~81m, NHATS target) from the Mt. Lemmon Survey (MLS) (Aug. 28.31-32p2)
K20P06G 2020 PG6 (small asteroid, arc=12 days, H=27.0 ~13m, close passer, NHATS target) from Pan-STARRS 1 (PS1) (Aug. 23.26-28p3)
K20O00B 2020 OB (small asteroid, arc=2 days, H=23.7 ~62m) from MLS (July 17.38-39p3)
Observations of close-passing objects
K20Q05G 2020 QG5 (Q=4.210 AU, arc=17 days, H=25.7 ~25m) from Great Shefford Obs. (Sept. 1.97-98p3)
Observation campaigns (NHATS targets, radar support)
K16F12P 2016 FP12 (arc=2 opp, H=25.6 ~26m, NHATS) from UH/Tholen NEO Follow-Up 2.24m Telescope (2016 Nov. 23.45p1 at G=24.22)
-- NHATS target table
Observations of small (H>22.0) & smallish (21.7<H<=22.0) asteroids
K20Q06V 2020 QV6 (q=0.318 AU, arc=5 days, H=22.5 ~107m) from North Obs. (Sept. 1.90-91p4), Great Shefford Obs. (Sept. 1.95-96p4), and Clixby Obs. (Sept. 1.97p4)
K20Q04O 2020 QO4 (arc=11 days, H=22.1 ~129m) from Clixby Obs. (Sept. 1.95p4)
K20K05O 2020 KO5 (arc=14 days, H=22.0 ~135m) from MLS (May 14.27-28p3)
Observations of other objects
K20Q04H 2020 QH4 (i=55.5°, Q=6.282 AU, arc=11 days, H=19.7 ~389m) from Great Shefford Obs. (Sept. 2.00-02p4)
K20M03L 2020 ML3 (arc=77 days, H=20.7 ~245m) from the Zwicky Transient Facility (ZTF) (Sept. 1.32p1, 1.37p1 & 1.46p2) and Pan-STARRS 2 (PS2) (Sept. 1.46-49p4)
K20L02A 2020 LA2 (Q=7.496 AU, arc=75 days, H=19.7 ~389m) from Castelmartini Obs. (Aug. 23.08p3)
K20H08P 2020 HP8 (arc=5 opp, H=20.3 ~295m) from SATINO-1 (Aug. 31.99-01p3) and Clixby Obs. (Sept. 1.88p4)
K20B12Z 2020 BZ12 (i=165.5°, Q=14.793 AU, arc=2 opp, H=18.2 ~776m) from Hidetaka Sato via iTelescope Obs. Siding Spring (July 1.82p3)
K20B01E 2020 BE1 (arc=24 days, H=21.5 ~170m) from MLS (Jan. 4.30-32p4)
K19A07N 2019 AN7 from MLS (2019 Jan. 5.50-52p3)
K16N38V 2016 NV38 (Q=4.020 AU, arc=2 opp, H=18.6 ~645m) from Northolt Branch Obs. (Aug. 31.88-89p4) and ATLAS Mauna Loa (Sept. 1.43-45p4)
K16E85D 2016 ED85 (Q=5.064 AU, arc=3 opp, H=17.7 ~977m) from Castelmartini Obs. (Aug. 23.06-07p3)
K16C32B 2016 CB32 (Q=4.714 AU, arc=3 opp, H=18.7 ~616m) from PS1 (Sept. 1.54-58p3) and PS2 (Sept. 1.54-58p3)
K13U14X 2013 UX14 (arc=4 opp, H=18.1 ~812m) from ATLAS Haleakala (Sept. 1.49-51p4)
K10JF3V 2010 JV153 (arc=3 opp, H=19.7 ~389m) from ATLAS Haleakala (Sept. 1.38-40p4)
K09J01K 2009 JK1 (arc=4 opp, H=19.8 ~371m) from PS1 (Sept. 1.55-58p3)
k5824 465824 2010 FR from North Obs. (Sept. 1.98-99p3)
k5166 465166 2007 EL from PS1 (Sept. 1.54-57p4)
g0302 420302 2011 XZ1 from ATLAS Mauna Loa (Sept. 1.38-42p4) and program code 1 via Kuban State Univ. Obs. (Sept. 1.71-82p49)
f4903 414903 2010 XT45 from PS2 (Sept. 1.54-58p4) and PS1 (Sept. 1.54-58p4)
c2625 382625 2002 PC130 from Northolt Branch Obs. (Aug. 31.89-90p4), ZTF (Sept. 1.35p2 & 1.40p2), and ATLAS Mauna Loa (Sept. 1.37-41p4)
c2503 382503 2001 RE8 from ZTF (Aug. 30.18-19p2 & 31.19-27p5)
Z4663 354663 2005 LY19 from ZTF (Aug. 30.50-51p4 & Sept. 1.50-52p5)
W2763 322763 2001 FA7 from ZTF (Aug. 30.49-51p4 & Sept. 1.50-51p4)
T9582 299582 2006 GQ2 from ZTF (Aug. 30.50-51p3 & Sept. 1.52p1)
K9924 209924 2005 WS55 from ZTF (Aug. 30.50-51p8 & Sept. 1.50-52p5)
G3081 163081 2002 AG29 from ATLAS Mauna Loa (Sept. 1.23-25p4)
G2173 162173 Ryugu (1999 JU3) from ATLAS Mauna Loa (Sept. 1.36-41p4)
E5656 145656 4788 P-L from Castelmartini Obs. (Aug. 23.06p3)
E4411 144411 2004 EW9 from Castelmartini Obs. (Aug. 23.11p3)
D6900 136900 1998 HL49 from ATLAS Mauna Loa (Sept. 1.36-41p4)
99935 99935 2002 AV4 from ZTF (Sept. 1.50-52p5)
96744 96744 1999 OW3 from Castelmartini Obs. (Aug. 23.09p3) and ATLAS Mauna Loa (Sept. 1.48-49p4)
87684 87684 2000 SY2 from Castelmartini Obs. (Aug. 23.12p3)
66146 66146 1998 TU3 from ATLAS Mauna Loa (Sept. 1.60-63p4)
66008 66008 1998 QH2 from ATLAS Mauna Loa (Sept. 1.40-44p4)
53435 53435 1999 VM40 from Castelmartini Obs. (Aug. 23.11-12p3) and ZTF (Aug. 30.44p2 & 31.43-44p3)
23187 23187 2000 PN9 from ATLAS Mauna Loa (Sept. 1.41-47p4)
21088 21088 Chelyabinsk (1992 BL2) from ZTF (Aug. 30.50-51p4)
19356 19356 1997 GH3 from ZTF (Aug. 30.50-51p4)
10115 10115 1992 SK from PS2 (Sept. 1.54-58p4) and PS1 (Sept. 1.56-58p3)
05645 5645 1990 SP from ATLAS Haleakala (Sept. 1.55-56p4)
05587 5587 1990 SB from ATLAS Mauna Loa (Sept. 1.53-55p4)
04503 4503 Cleobulus (1989 WM) from ZTF (Aug. 29.47p1 & Sept. 1.38-44p4)
04055 4055 Magellan (1985 DO2) from ZTF (Aug. 31.41-43p3, Sept. 1.44p1 & 1.48p1)
03752 3752 Camillo (1985 PA) from ATLAS Mauna Loa (Sept. 1.28-30p4)
02212 2212 Hephaistos (1978 SB) from ATLAS Mauna Loa (Sept. 1.51-52p4) and PS1 (Sept. 1.54-58p4)
02100 2100 Ra-Shalom (1978 RA) from ZTF (Sept. 1.50-51p4)
01865 1865 Cerberus (1971 UA) from ATLAS Mauna Loa (Sept. 1.26-29p3)
01685 1685 Toro (1948 OA) from ATLAS Mauna Loa (Sept. 1.59-62p4)
01566 1566 Icarus (1949 MA) from Sato/iTelObs-SSO (July 15.72-73p3)
01036 1036 Ganymed (1924 TD) from ATLAS Mauna Loa (Sept. 1.58-60p4)
00887 887 Alinda (1918 DB) from ATLAS Haleakala (Sept. 1.43-44p4)
00433 433 Eros (1898 DQ) from ZTF (Sept. 1.50-52p5) and ATLAS Mauna Loa (Sept. 1.61-64p4)

Observers on 2 September '20

Fifteen observers appear in today's MPEC.

Code	Observer / observatory
`T05`	ATLAS Haleakala in Hawaii, 4 in MPEC 2020-R03 -- 2013 UX14, 2010 JV153, 5645, 887
`T08`	ATLAS Mauna Loa in Hawaii, 17 in MPEC 2020-R03 -- 2016 NV38, 96744, 66146, 66008, 420302, 382625, 23187, 163081, 162173, 136900, 5587, 3752, 2212, 1865, 1685, 1036, 433
`160`	Castelmartini Obs. in Italy, 7 in MPEC 2020-R03 -- 2020 LA2, 2016 ED85, 96744, 87684, 53435, 145656, 144411
`Z99`	Clixby Obs. in England, 3 in MPEC 2020-R03 -- 2020 QV6, 2020 QO4, 2020 HP8
`J95`	Great Shefford Obs. in England, 3 in MPEC 2020-R03 -- 2020 QV6, 2020 QH4, 2020 QG5
`Q621`	Hidetaka Sato in Japan via iTelescope Obs. Siding Spring in New South Wales, 2 in MPEC 2020-R03 -- 2020 BZ12, 1566
`C401`	program code 1 via Kuban State Univ. Obs. in Russia, 1 in MPEC 2020-R03 -- 420302
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 5 in MPEC 2020-R03 -- 2020 QN1, 2020 OB, 2020 KO5, 2020 BE1, 2019 AN7
`J69`	North Obs. in England, 2 in MPEC 2020-R03 -- 2020 QV6, 465824
`Z80`	Northolt Branch Obs. in England, 2 in MPEC 2020-R03 -- 2016 NV38, 382625
`F51`	Pan-STARRS 1 (PS1) in Hawaii, 7 in MPEC 2020-R03 -- 2020 PG6, 2016 CB32, 2009 JK1, 465166, 414903, 10115, 2212
`F52`	Pan-STARRS 2 (PS2) in Hawaii, 4 in MPEC 2020-R03 -- 2020 ML3, 2016 CB32, 414903, 10115
`C95`	SATINO-1 in France, 1 in MPEC 2020-R03 -- 2020 HP8
`T12`	UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2020-R03 -- 2016 FP12
`I41`	Zwicky Transient Facility (ZTF) in southern California, 15 in MPEC 2020-R03 -- 2020 ML3, 99935, 53435, 382625, 382503, 354663, 322763, 299582, 21088, 209924, 19356, 4503, 4055, 2100, 433

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

Impact Risk Monitoring on 2 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 QN1	JPL Sentry	1800	2102-2119	13	8.68101e-06	-4.59	-4.86	0	JPL: Computed at 07:10 today Pacific time based on 28 observations spanning 27.930 days (2020-Jul-31.38815 to 2020-Aug-28.31841). Diameter approximately 0.079 km. from weighted mean H=23.15.
2020 QN1	NEODyS	1800	2099-2118	32	6.48e-06	-4.73	-4.95	0	NEODyS: "Based on 28 optical observations (of which 0 are rejected as outliers) from 2020-07-31.389 to 2020-08-28.319."

2020 PG6	JPL Sentry	1800	2029-2048	11	0.0002323864	-3.98	-3.99	0	JPL: Computed at 07:03 today Pacific time based on 28 observations spanning 11.917 days (2020-Aug-11.36766 to 2020-Aug-23.284919). Diameter approximately 0.014 km. from weighted mean H=26.97.
2020 PG6	NEODyS	1800	2029-2048	14	3.68e-04	-3.81	-3.81	0	NEODyS: "Based on 28 optical observations (of which 0 are rejected as outliers) from 2020-08-11.368 to 2020-08-23.286."

2020 OB	JPL Sentry	1800	2114-2119	3	5.7576e-08	-6.49	-6.63	0	JPL: Computed at 07:02 today Pacific time based on 16 observations spanning 1.9426 days (2020-Jul-16.44824 to 2020-Jul-18.39088). Diameter approximately 0.064 km. from weighted mean H=23.64.
2020 OB	NEODyS	1800	2114-2116	6	1.68e-05	-4.05	-4.29	0	NEODyS: "Based on 16 optical observations (of which 1 are rejected as outliers) from 2020-07-16.449 to 2020-07-18.392."

2011 ES4	JPL Sentry	1800	2031-2112	75	5.38789188e-05	-4.65	-5.11	0	JPL: Computed at 05:58 Jan. 11th Pacific time based on 44 observations spanning 4.0327 days (2011-Mar-02.19847 to 2011-Mar-06.23118). Diameter approximately 0.025 km. from weighted mean H=25.68.

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 2 September '20

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

1800

Noted that JPL Sentry has updated its 2011 ES4 risk assessment - see above
Noted that JPL Sentry has updated its 2020 OB risk assessment - see above
Noted that NEODyS has updated its 2020 OB risk assessment - see above
Noted that JPL Sentry has updated its 2020 PG6 risk assessment - see above
Noted that NEODyS has updated its 2020 PG6 risk assessment - see above
Noted that JPL Sentry has updated its 2020 QN1 risk assessment - see above
Noted that NEODyS has updated its 2020 QN1 risk assessment - see above
Grabbed MPEC 2020-R03 - Daily Orbit Update - see above

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