2010-08-17 Tracking News

Contents on 17 August '10

IAU Minor Planet Center
- NEOCP Activity -- four listings: 3 new, 1 updated
- New MPECs -- two MPECs
Observers -- nine observing facilities
Impact Risk Monitoring -- two objects
Chronology

Resources:

Consolidated Risk Tables - the CRT page
Of 323 risk-listed objects, 13 have had news in the last month. Updated at 1438 UTC.
Earth's Busy Neighborhood Traffic Report
No objects are known to be within ten LD of Earth today. Updated at 0110 UTC.
Ephemerides for risk-rated and nearby objects
News image catalog
Old & new CRT Archive
Old News Archive & Small Objects Archive

The latest A/CC news is available via framed access, RSS news feed, or redirection. - Note: A/CC has a main Web site and also a backup site with its own duplicate RSS news feed.

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. And use the all-up news archive to access news from any time since A/CC began in early 2002. To keep track of what's new each day, watch the Chronology section.

NEOCP Activity on 17 August '10

The MPC's NEO Confirmation Page has 4 listings: 3 new, 1 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had three new and one updated listings. Of these, two were "one nighters."

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 17 August '10

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 2010-Q07 time-stamped "06:12 UT" - Daily Orbit Update - see below
MPEC 2010-Q08 time-stamped "20:26 UT" - P/2003 S2 (NEAT) = P/2010 P5

MPEC 2010-Q08 - "20:26 UT" - P/2003 S2 (NEAT) = P/2010 P5

PK10P050 P/2010 P5 (q=2.456 AU, Q=5.218 AU, TP=2011 Mar. 3.18648 TT) from RAS Obs. Mayhill (Aug. 15.31-35p3 & 17.34-36p2)
PK03S020 P/2003 S2 (NEAT) (q=2.457 AU, Q=5.208 AU, TP=2003 Sept. 7.29180 TT)

<< DOU on 17 Aug. '10 >> MPEC 2010-Q07 - "06:12 UT" - Daily Orbit Update

Observations of risk-listed objects
K10P65S 2010 PS65 (small asteroid, Q=4.709 AU, arc=3 days, H=24.6 ~41m) from Astronomical Research Obs. Westfield (Aug. 16.26-27p4)
Observations of small asteroids (H>22.0)
K10C55B 2010 CB55 (arc=188 days, H=22.6 ~102m) from Castelmartini Obs. (Aug. 15.96p3)
Observations of other objects
K10P22Y 2010 PY22 (arc=8 days, H=19.2 ~490m) from Balzaretto Obs. (Aug. 15.83-84p4) and Castelmartini Obs. (Aug. 15.90-91p3)
K10OA1N 2010 ON101 (arc=17 days, H=20.5 ~269m) from Bigmuskie Obs. (Aug. 16.81-84p3)
K10N01G 2010 NG1 (arc=39 days, H=20.4 ~282m) from David Tholen's team on Mauna Kea (July 14.37p2)
K10M87R 2010 MR87 (arc=55 days, H=19.3 ~467m) from Tholen team/Mauna Kea (July 14.38p2) and ARO Westfield (Aug. 16.11-13p3)
K10M01F 2010 MF1 (arc=58 days, H=19.6 ~407m) from Castelmartini Obs. (Aug. 15.84-85p3)
K10K39Y 2010 KY39 (arc=90 days, H=20.8 ~234m) from ARO Westfield (Aug. 16.32-35p4)
K10J00E 2010 JE (Q=4.602 AU, arc=105 days, H=20.2 ~309m) from ARO Westfield (Aug. 16.08-10p4)
K10F92O 2010 FO92 (arc=149 days, H=20.0 ~339m) from Castelmartini Obs. (Aug. 15.85-86p3)
K09C05Q 2009 CQ5 (arc=2 opp, H=17.6 ~1.02 km) from Santa Mama Obs. (Aug. 15.83-84p3 & 16.81p3)
K02N71E 2002 NE71 (arc=2 opp, H=19.4 ~446m) from Castelmartini Obs. (Aug. 15.93-94p3)
K00P27Q 2000 PQ27 (arc=2 opp, H=19.7 ~389m) from Mt. John Obs. (July 14.57-59p7)
E3381 143381 2003 BC21 from Castelmartini Obs. (Aug. 15.95-96p3)
D8404 138404 2000 HA24 from La Sagra Obs. (Aug. 15.98-01p3)

Observers on 17 August '10

Nine observing facilities appear in today's MPECs.

Code	Observer / observatory
`H21`	Astronomical Research Obs. Westfield in Illinois, 4 in MPEC 2010-Q07 -- 2010 PS65, 2010 MR87, 2010 KY39, 2010 JE
`A81`	Balzaretto Obs. in Italy, 1 in MPEC 2010-Q07 -- 2010 PY22
`B88`	Bigmuskie Obs. in Italy, 1 in MPEC 2010-Q07 -- 2010 ON101
`160`	Castelmartini Obs. in Italy, 6 in MPEC 2010-Q07 -- 2010 PY22, 2010 MF1, 2010 FO92, 2010 CB55, 2002 NE71, 143381
`J75`	La Sagra Obs. in Spain, 1 in MPEC 2010-Q07 -- 138404
`5682`	David Tholen's team on Mauna Kea in Hawaii, 2 in MPEC 2010-Q07 -- 2010 NG1, 2010 MR87
`474`	Mt. John Obs. in New Zealand, 1 in MPEC 2010-Q07 -- 2000 PQ27
`H06`	RAS Obs. Mayhill in New Mexico, 1 in MPEC 2010-Q08 -- P/2010 P5
`B38`	Santa Mama Obs. in Italy, 1 in MPEC 2010-Q07 -- 2009 CQ5

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

Impact Risk Monitoring on 17 August '10

**Summary Risk Table for Risk Assessments Updated Today** (last checks: NEODyS and JPL 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 is 100 years from today and for NEODyS is usually the year 2090. Both also post impact solutions beyond 100 years for a few special objects.
For the latest official risk assessments, and for explanations of the terminology, see the JPL NEO Program Sentry and NEODyS CLOMON (backup) 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

2010 PR66	NEODyS	1438	2015-2089	8	6.43e-08	-4.13	-4.36	0	NEODyS: "Based on 40 optical observations (of which 0 are rejected as outliers) from 2010/08/15.266 to 2010/08/16.841."

2010 PS65	JPL Sentry	1438	2102	1	1.5e-05	-4.93	-4.93	0	JPL: "Analysis based on 23 observations spanning 2.9758 days (2010-Aug-13.29423 to 2010-Aug-16.27007)." Diameter approximately 0.042 km. from mean, weighted H=24.5.

Legend: VI# = VI count, Prob Cum = cumulative probability, PS Cum/Max = cumulative/maximum Palermo Scale, TS = Torino Scale

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 17 August '10

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

2104	Grabbed MPEC 2010-Q08 - P/2003 S2 (NEAT) = P/2010 P5 - see above
1438	Noted that NEODyS has posted 2010 PR66 as an impact risk - see above Noted that JPL Sentry has updated its 2010 PS65 risk assessment - see above Grabbed MPEC 2010-Q07 - Daily Orbit Update - see above

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