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Contents  on 21 August '10

Resources:

The latest A/CC news is available via framed access, RSS news feed 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.

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NEOCP Activity  on 21 August '10

The MPC's NEO Confirmation Page has 2 listings: 2 updated

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

To learn how observers use the NEOCP, see the Practical guide on how to observe NEOCP object at Suno Observatory by Birtwhistle et al.

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New MPECs  on 21 August '10

Minor Planet Electronic Circulars

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


MPEC 2010-Q20 - "15:17 UT" - Observations of Comets


MPEC 2010-Q19 - "14:38 UT" - Comet P/2000 Y3 = 2010 Q1 (Scotti)


<< DOU on 21 Aug. '10 >>  MPEC 2010-Q18 - "06:12 UT" - Daily Orbit Update

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Observers  on 21 August '10

A total of 41 observing facilities appear in today's MPECs.

CodeObserver / observatory
B88Bigmuskie Obs. in Italy, 1 in MPEC 2010-Q18 -- 2010 PR66
I99Blanquita Obs. in Spain, 3 in MPEC 2010-Q20 -- C/2008 FK75, 103P, 10P
J05Bootes Obs. in Spain, 3 in MPEC 2010-Q18 -- 3122, 2212, 1865
B20Carmelita Obs. in Spain, 2 in MPEC 2010-Q20 -- C/2008 FK75, C/2007 Q3-A
160Castelmartini Obs. in Italy, 11 in MPEC 2010-Q18 -- 2010 PY22, 2010 PR66, 2010 PM9, 2010 OC, 2010 KZ117, 2002 QY6, 2002 OS4, 2002 NE71, 87311, 23187, 5786
A77Chante-Perdrix Obs. in France, 3 in MPEC 2010-Q20 -- C/2006 S3, 236P, 103P
J01Cielo Profundo Obs. in Spain, 5 in MPEC 2010-Q20 -- C/2008 S3, C/2006 S3, 237P, 236P, 103P
106Crni Vrh Obs. in Slovenia, 2 in MPEC 2010-Q20 -- C/2008 FK75, 103P
J04ESA Optical Ground Station in the Canary Islands, 1 in MPEC 2010-Q18 -- 2010 PD57
J27El Guijo Obs. in Spain, 1 in MPEC 2010-Q18 -- 2002 NE71
A17Guidestar Obs. in Germany, 5 in MPEC 2010-Q18 -- 2010 PS66, 2010 PR66, 2010 PM10, 2010 NW117, 2007 EJ26
750Hobbs Obs. in Wisconsin, 2 in MPEC 2010-Q20 -- C/2007 Q3-A, C/2006 S3
J28Jaen Obs. in Spain, 1 in MPEC 2010-Q20 -- 103P
585Kiev Comet Station in the Ukraine, 3 in MPEC 2010-Q20 -- C/2006 S3, 103P, 10P
D95Kurihara Obs. in Japan, 3 in MPEC 2010-Q20 -- C/2009 UG89, C/2006 S3, 103P
704LINEAR in New Mexico, 3 in MPECs 2010-Q18 & 2010-Q20 -- C/2007 Q3-A, 85818, 237442
J75La Sagra Obs. in Spain, 1 in MPEC 2010-Q18 -- 138404
J38La Vara Obs. in Spain, 6 in MPEC 2010-Q20 -- C/2009 UG89, C/2008 FK75, C/2007 Q3-A, C/2006 S3, 103P, 10P
B33Libbiano Obs. in Italy, 1 in MPEC 2010-Q20 -- 103P
J59Linceo Obs. in Spain, 1 in MPEC 2010-Q20 -- C/2006 S3
844Los Molinos Obs. in Uruguay, 1 in MPEC 2010-Q20 -- 10P
B82Maidbronn Obs. in Germany, 6 in MPEC 2010-Q20 -- C/2009 Y1, C/2008 FK75, C/2007 VO53, C/2007 Q3-A, C/2006 S3, 103P
C10Maisoncelles Obs. in France, 3 in MPEC 2010-Q20 -- 219P, 103P, 10P
A01Masia Cal Maciarol Modul 1 (MCM1) in Spain, 5 in MPEC 2010-Q20 -- C/2008 FK75, C/2007 Q3-A, C/2006 S3, 103P, 10P
213Montcabre Obs. in Spain, 4 in MPEC 2010-Q20 -- C/2008 FK75, C/2006 S3, 103P, 10P
945Monte Deva Obs. in Spain, 4 in MPEC 2010-Q20 -- C/2008 FK75, C/2007 Q3-A, C/2006 S3, 103P
D81Nagano Obs. in Japan, 1 in MPEC 2010-Q20 -- 10P
H45Petit Jean Mtn. South Obs. in Arkansas, 1 in MPEC 2010-Q20 -- 237P
561Piszkesteto Sta. in Hungary, 3 in MPEC 2010-Q20 -- C/2009 Y1, C/2009 T3, C/2008 S3
939Rodeno Obs. in Spain, 5 in MPEC 2010-Q20 -- C/2008 FK75, C/2007 Q3-A, C/2006 S3, 103P, 10P
B74Santa Maria de Montmagastrell Obs. in Spain, 1 in MPEC 2010-Q20 -- C/2007 VO53
204Schiaparelli Obs. in Italy, 10 in MPECs 2010-Q18 & 2010-Q20 -- 2010 PQ2, 2010 PP2, 2010 PJ9, 2010 OP1, C/2009 T3, 2002 QY6, 2002 OS4, 2000 AA6, 103P, 10P
D93Sendai Obs. in Japan, 5 in MPEC 2010-Q20 -- C/2008 FK75, C/2007 Q3-A, C/2006 S3, 103P, 10P
E12Siding Spring Survey (SSS) in New South Wales, 6 in MPEC 2010-Q18 -- 2010 OA, 2010 FO92, 2007 TY18, 2007 ML13, 2004 BW58, 7977
C14Sky Vistas Obs. in Austria, 2 in MPEC 2010-Q20 -- C/2008 FK75, C/2006 S3
691Spacewatch 0.9m telescope in Arizona, 4 in MPECs 2010-Q18 & 2010-Q19 -- P/2010 Q1, 2010 OK126, 2010 OD101, 2010 OB101
291Spacewatch 1.8m telescope in Arizona, 1 in MPEC 2010-Q19 -- P/2010 Q1
B51Vallauris Obs. in France, 1 in MPEC 2010-Q20 -- C/2006 S3
C51WISE in Earth polar orbit, 4 in MPEC 2010-Q20 -- P/2010 J3, 237P, 223P, 219P
G56Walnut Creek Obs. in northern California, 2 in MPEC 2010-Q18 -- 2010 PR66, 189011
I15Wishing Star Obs. in Rhode Island, 1 in MPEC 2010-Q18 -- 2010 PY75
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

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Impact Risk Monitoring  on 21 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 PR66JPL Sentry15272078-210732.7e-07-4.04-4.080JPL: "Analysis based on 64 observations spanning 5.8144 days (2010-Aug-15.2648 to 2010-Aug-21.07922)." Diameter approximately 0.440 km. from mean, weighted H=19.4.
NEODyS1527207821.71e-10-7.06-7.090NEODyS: "Based on 64 optical observations (of which 0 are rejected as outliers) from 2010/08/15.266 to 2010/08/21.080."

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.

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Chronology  on 21 August '10

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

1824Noted that the NEOCP has become active
1527Noted that JPL Sentry has updated its 2010 PR66 risk assessment - see above
Noted that NEODyS has updated its 2010 PR66 risk assessment - see above
Grabbed MPEC 2010-Q18 - Daily Orbit Update - see above
Grabbed MPEC 2010-Q19 - Comet P/2000 Y3 = 2010 Q1 (Scotti) - see above
Grabbed MPEC 2010-Q20 - Observations of Comets - see above