2020-10-03 Tracking News

Contents on 3 October '20

IAU Minor Planet Center
- NEOCP Activity -- 21 listings
- New MPECs -- one MPEC
Observers -- nine observers
Impact Risk Monitoring -- five objects
Chronology

Asteroid/Comet Connection (A/CC) Resources:

Consolidated Risk Tables - the CRT page
Of 1180 risk-listed objects, 167 have had news in the last 31 days. Updated at 1801 UTC on 3 Oct.
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 3 October '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 24 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 3 October '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 3 October '20 >> MPEC 2020-T05 - "12:19 UT" - Daily Orbit Update

Observations of recently (no longer) risk-listed objects
K20R00M 2020 RM (small asteroid, arc=4 days, H=27.1 ~13m, close passer, NHATS target) from Transit Dreams Obs. (Sept. 7.06p2)
Observations of small asteroids (H>22.0)
K20B01A 2020 BA1 (arc=14 days, H=24.4 ~45m) from the Spacewatch 1.8m telescope (Feb. 1.22-24p3)
Observations of other objects
K20O08C 2020 OC8 (arc=107 days, H=20.7 ~245m) from SATINO-1 (Sept. 8.86-88p2)
K20O02J 2020 OJ2 (i=37.8°, Q=4.125 AU, arc=32 days, H=20.0 ~339m) from Burnt Tree Hill Obs. (Aug. 14.31p2 & 14.36p2)
K19O01M 2019 OM1 (arc=2 opp, H=21.4 ~178m) from Spacewatch 1.8m (Feb. 15.43-47p2)
K19B02T 2019 BT2 (arc=3 opp, H=20.5 ~269m) from Spacewatch 1.8m (Feb. 13.13-14p2)
K16U05L 2016 UL5 (Q=4.314 AU, arc=3 opp, H=18.8 ~589m) from UH/Tholen NEO Follow-Up 2.24m Telescope (Sept. 17.41p1 at G=23.58)
K13U14X 2013 UX14 (arc=4 opp, H=18.2 ~776m) from ATLAS Mauna Loa (Oct. 2.58-62p4)
K09V25Y 2009 VY25 (arc=2 opp, H=19.5 ~426m) from Castelmartini Obs. (2016 Sept. 25.96p3)
g0302 420302 2011 XZ1 from Squirrel Valley Obs. (Oct. 3.05-07p3)
f4903 414903 2010 XT45 from the Zwicky Transient Facility (ZTF) (Sept. 30.35p1, 30.50p1, Oct. 1.36p1 & 1.40p1)
O8083 248083 2004 QU24 from Castelmartini Obs. (2016 Sept. 26.00-01p3)
I5851 185851 2000 DP107 from Castelmartini Obs. (2016 Sept. 25.09p3)
H1819 171819 2001 FZ6 from Castelmartini Obs. (2016 Sept. 26.04p3)
G3902 163902 2003 SW222 from ZTF (Oct. 2.29p2)
G3081 163081 2002 AG29 from Transit Dreams Obs. (Oct. 2.05-06p3 & 3.07-09p3)
G2173 162173 Ryugu (1999 JU3) from Squirrel Valley Obs. (Oct. 3.02-04p4)
F4244 154244 2002 KL6 from Castelmartini Obs. (2016 Sept. 25.99p3)
D6900 136900 1998 HL49 from Burnt Tree Hill Obs. (Aug. 14.31p2 & 14.36p2) and Transit Dreams Obs. (Oct. 3.02-04p3)
A5140 105140 2000 NL10 from Transit Dreams Obs. (Oct. 3.05-06p3)
89355 89355 2001 VS78 from ZTF (Sept. 30.49-52p2, Oct. 2.41p1 & 2.48p1)
68359 68359 2001 OZ13 from ZTF (Oct. 1.35p1, 1.40p1 & 2.35-36p2)
52750 52750 1998 KK17 from Castelmartini Obs. (2016 Sept. 25.14p2)
30825 30825 1990 TG1 from Transit Dreams Obs. (Oct. 2.99-01p3)
04953 4953 1990 MU from Castelmartini Obs. (2016 Sept. 25.13p3)

Observers on 3 October '20

Nine observers appear in today's MPEC.

Code	Observer / observatory
`T08`	ATLAS Mauna Loa in Hawaii, 1 in MPEC 2020-T05 -- 2013 UX14
`U63`	Burnt Tree Hill Obs., 2 in MPEC 2020-T05 -- 2020 OJ2, 136900
`160`	Castelmartini Obs. in Italy, 7 in MPEC 2020-T05 -- 2009 VY25, 52750, 248083, 185851, 171819, 154244, 4953
`C95`	SATINO-1 in France, 1 in MPEC 2020-T05 -- 2020 OC8
`291`	Spacewatch 1.8m telescope in Arizona, 3 in MPEC 2020-T05 -- 2020 BA1, 2019 OM1, 2019 BT2
`W34`	Squirrel Valley Obs. in North Carolina, 2 in MPEC 2020-T05 -- 420302, 162173
`W33`	Transit Dreams Obs., 5 in MPEC 2020-T05 -- 2020 RM, 30825, 163081, 136900, 105140
`T12`	UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2020-T05 -- 2016 UL5
`I41`	Zwicky Transient Facility (ZTF) in southern California, 4 in MPEC 2020-T05 -- 89355, 68359, 414903, 163902

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

Impact Risk Monitoring on 3 October '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

2018 FK5	JPL Sentry	1800	2087-2110	2	3.72e-06	-7.22	-7.50	0	JPL: Computed at 18:39 March 29th of 2018 Pacific time based on 33 observations spanning 1.7506 days (2018-Mar-28.22211 to 2018-Mar-29.97275). Diameter approximately 0.007 km. from weighted mean H=28.28.

2016 JA	JPL Sentry	1800	2064-2089	3	4.06092e-08	-8.84	-9.10	0	JPL: Computed at 08:08 May 18th of 2019 Pacific time based on 51 observations spanning 16.071 days (2016-May-01.32646 to 2016-May-17.397701). Diameter approximately 0.011 km. from weighted mean H=27.51.

2014 YP44	JPL Sentry	1800	2092-2101	3	3.766e-10	-10.36	-10.71	0	JPL: Computed at 12:14 April 9th of 2017 Pacific time based on 13 observations spanning .67029 days (2014-Dec-30.40116 to 2014-Dec-31.07145). Diameter approximately 0.020 km. from weighted mean H=26.12.

2007 FT3	JPL Sentry	1800	2024-2116	164	1.364327e-06	-2.96	-3.46	0	JPL: Computed at 04:14 April 11th of 2017 Pacific time based on 14 observations spanning 1.2324 days (2007-Mar-20.45448 to 2007-Mar-21.68686). Diameter approximately 0.340 km. from weighted mean H=19.97.

2005 TH50	JPL Sentry	1800	2031-2101	25	5.462583e-05	-5.90	-6.23	0	JPL: Computed at 12:18 April 8th of 2017 Pacific time based on 16 observations spanning 3.7846 days (2005-Oct-09.42882 to 2005-Oct-13.21338). Diameter approximately 0.009 km. from weighted mean H=27.98.

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 3 October '20

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

1800	Noted that JPL Sentry has updated its 2005 TH50 risk assessment - see above Noted that JPL Sentry has updated its 2007 FT3 risk assessment - see above Noted that JPL Sentry has updated its 2014 YP44 risk assessment - see above Noted that JPL Sentry has updated its 2016 JA risk assessment - see above Noted that JPL Sentry has updated its 2018 FK5 risk assessment - see above
1700	Grabbed MPEC 2020-T05 - Daily Orbit Update - see above

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