Contents  on 12 May '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.

NEOCP Activity  on 12 May '10

The MPC's NEO Confirmation Page has 6 listings: 3 new, 3 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had three new and three updated listings. Of these, two were "one nighters." So far The Tracking News has counted a total of nine listings on the NEOCP at some point 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 12 May '10

Minor Planet Electronic Circulars

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


MPEC 2010-J76 - "15:52 UT" - 2010 JO71


MPEC 2010-J75 - "15:47 UT" - 2010 JN71


MPEC 2010-J74 - "14:53 UT" - 2010 CJ171


<< DOU on 12 May '10 >>  MPEC 2010-J73 - "06:09 UT" - Daily Orbit Update

Observers  on 12 May '10

A total of 22 observing facilities appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 1 in MPEC 2010-J74 -- 2010 CJ171
703Catalina Sky Survey (CSS) in Arizona, 11 in MPECs 2010-J73, 2010-J74 & 2010-J75 -- 2010 JN71, 2010 GR7, 2010 GA34, 2010 CJ171, 2007 JZ20, 2007 HX4, 2004 XD50, 184990, 152978, 3671, 1866
448Desert Moon Obs. in New Mexico, 3 in MPEC 2010-J73 -- 2010 JK33, 2010 HR80, 2009 XD
114Engelhardt Obs. Zelenchukskaya Station in Karachay-Cherkessia, 1 in MPEC 2010-J75 -- 2010 JN71
F656Richard Miles in England via Faulkes Telescope North in Hawaii, 2 in MPECs 2010-J75 & 2010-J76 -- 2010 JO71, 2010 JN71
J95Great Shefford Obs. in England, 3 in MPEC 2010-J73 -- 2010 JW34, 2010 JO33, 2010 HY103
704LINEAR in New Mexico, 4 in MPEC 2010-J73 -- 2010 EC135, 85839, 141432, 11066
H01Magdalena Ridge Obs. in New Mexico, 1 in MPEC 2010-J75 -- 2010 JN71
474Mt. John Obs. in New Zealand, 7 in MPECs 2010-J73 & 2010-J76 -- 2010 JW34, 2010 JU34, 2010 JR34, 2010 JO71, 2010 JK1, 2010 GE25, 2002 TC60
G96Mt. Lemmon Survey (MLS) in Arizona, 8 in MPECs 2010-J73 & 2010-J76 -- 2010 JO71, 2010 JK1, 2010 HG20, 2008 LW8, 2003 QB90, 2003 HS42, 85628, 234061
H23Pear Tree Obs. in Florida, 2 in MPEC 2010-J73 -- 68216, 12923
6581Dave Balam via Plaskett 1.8m Telescope in British Columbia, 1 in MPEC 2010-J75 -- 2010 JN71
H11Rodeo Obs. in New Mexico, 2 in MPECs 2010-J74 & 2010-J76 -- 2010 JO71, 2010 CJ171
854Sabino Canyon Obs. in Arizona, 3 in MPECs 2010-J74, 2010-J75 & 2010-J76 -- 2010 JO71, 2010 JN71, 2010 CJ171
E12Siding Spring Survey (SSS) in New South Wales, 2 in MPEC 2010-J73 -- 88263, 1980
691Spacewatch 0.9m telescope in Arizona, 6 in MPEC 2010-J73 -- 2010 JA35, 2010 HG20, 2000 EF104, 66400, 237442, 162581
291Spacewatch 1.8m telescope in Arizona, 4 in MPECs 2010-J73 & 2010-J76 -- 2010 JO71, 2010 JL33, 2010 HX107, 2010 HD33
954Teide Obs. in the Canary Islands, 1 in MPEC 2010-J73 -- 2009 UV18
926Tenagra II Obs. in Arizona, 5 in MPECs 2010-J73, 2010-J74, 2010-J75 & 2010-J76 -- 2010 JW34, 2010 JO71, 2010 JN71, 2010 JA35, 2010 CJ171
H10Tzec Maun Obs. Mayhill in New Mexico, 1 in MPEC 2010-J75 -- 2010 JN71
G56Walnut Creek Obs. in northern California, 1 in MPEC 2010-J75 -- 2010 JN71
I15Wishing Star Obs. in Rhode Island, 2 in MPEC 2010-J73 -- 2010 JO33, 2002 YF4
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 12 May '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 JN71JPL Sentry18002063-2107104.4e-08-5.62-6.130JPL: "Analysis based on 31 observations spanning 1.0764 days (2010-May-11.32252 to 2010-May-12.39896)." Diameter approximately 0.190 km. from mean, weighted H=21.2.
2010 JA43NEODyS14312014-2089421.29e-08-5.86-6.540NEODyS: "Based on 21 optical observations (of which 0 are rejected as outliers) from 2010/05/04.540 to 2010/05/07.252."
2010 JM41NEODyS14312014-2085381.1e-08-5.53-5.760NEODyS: "Based on 14 optical observations (of which 0 are rejected as outliers) from 2010/05/10.445 to 2010/05/11.385."
2010 JU39NEODyS14312012-2090434.53e-06-1.97-2.190NEODyS: "Based on 22 optical observations (of which 0 are rejected as outliers) from 2010/05/09.341 to 2010/05/11.217."
2010 JL33JPL Sentry14312020-208256.1e-10-5.34-5.780JPL: "Analysis based on 34 observations spanning 4.8719 days (2010-May-06.36978 to 2010-May-11.24168)." Diameter approximately 0.843 km. from mean, weighted H=18.0.
NEODyS1431206621.27e-09-4.94-5.230NEODyS: "Based on 34 optical observations (of which 0 are rejected as outliers) from 2010/05/06.371 to 2010/05/11.242."
2010 JK1JPL Sentry1431R E M O V E DJPL: Risk listing removed at 0952 UTC.

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 12 May '10

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

1800Noted that JPL Sentry has posted 2010 JN71 as an impact risk - see above
1607Grabbed MPEC 2010-J75 - 2010 JN71 - see above
Grabbed MPEC 2010-J76 - 2010 JO71 - see above
1505Grabbed MPEC 2010-J74 - 2010 CJ171 - see above
1432Grabbed MPEC 2010-J73 - Daily Orbit Update - see above
1431Noted that NEODyS has posted 2010 JA43 as an impact risk - see above
Noted that JPL Sentry has removed 2010 JK1 as an impact risk - see above
Noted that JPL Sentry has updated its 2010 JL33 risk assessment - see above
Noted that NEODyS has updated its 2010 JL33 risk assessment - see above
Noted that NEODyS has posted 2010 JM41 as an impact risk - see above
Noted that NEODyS has posted 2010 JU39 as an impact risk - see above