Contents  on 7 May '10


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 7 May '10

The MPC's NEO Confirmation Page has 23 listings: 13 new, 10 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had thirteen new and ten updated listings. Of these, twelve were "one nighters." So far The Tracking News has counted a total of 26 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 7 May '10

Minor Planet Electronic Circulars

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

MPEC 2010-J33 - "16:08 UT" - 2010 EN65

MPEC 2010-J32 - "14:06 UT" - Comet C/2010 J1 (Boattini)

<< DOU on 7 May '10 >>  MPEC 2010-J31 - "06:07 UT" - Daily Orbit Update

MPEC 2010-J30 - "00:24 UT" - 2010 JJ3

MPEC 2010-J29 - "00:08 UT" - 2010 JH3

Observers  on 7 May '10

A total of 26 observing facilities appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 8 in MPECs 2010-J29, 2010-J30 & 2010-J31 -- 2010 JJ3, 2010 JH3, 2010 JF, 2010 HC, 2010 HA, 2010 GA34, 2010 FP, 153814
B75Betelgeuse Station in Italy, 1 in MPEC 2010-J31 -- 3554
703Catalina Sky Survey (CSS) in Arizona, 5 in MPECs 2010-J29, 2010-J31 & 2010-J32 -- 2010 JH3, C/2010 J1, 2000 HD74, 152964, 12923
807Cerro Tololo Inter-American Obs. in Chile, 1 in MPEC 2010-J33 -- 2010 EN65
850Cordell-Lorenz Obs. in Tennessee, 1 in MPEC 2010-J32 -- C/2010 J1
H26Doc Greiner Research Obs. in Wisconsin, 1 in MPEC 2010-J31 -- 2009 UV18
J04ESA Optical Ground Station (ESA OGS) in the Canary Islands, 3 in MPECs 2010-J29, 2010-J30 & 2010-J32 -- 2010 JJ3, 2010 JH3, C/2010 J1
114Engelhardt Obs. Zelenchukskaya Station in Karachay-Cherkessia, 1 in MPEC 2010-J32 -- C/2010 J1
E94Gisborne Obs. in New Zealand, 1 in MPEC 2010-J32 -- C/2010 J1
J95Great Shefford Obs. in England, 3 in MPECs 2010-J29, 2010-J31 & 2010-J32 -- 2010 JH3, 2010 JA, C/2010 J1
704LINEAR in New Mexico, 7 in MPEC 2010-J31 -- 2010 JG, 237551, 207945, 161989, 153814, 142464, 5645
844Los Molinos Obs. in Uruguay, 1 in MPEC 2010-J32 -- C/2010 J1
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2010-J31 -- 2010 FC81
118Modra Obs. in Slovakia, 2 in MPECs 2010-J29 & 2010-J32 -- 2010 JH3, C/2010 J1
G96Mt. Lemmon Survey (MLS) in Arizona, 4 in MPECs 2010-J30, 2010-J31 & 2010-J32 -- 2010 JK1, 2010 JJ3, C/2010 J1, 2001 XV10
644NEAT's Mt. Palomar telescope in southern California, 1 in MPEC 2010-J33 -- 2010 EN65
261Palomar Digitized Sky Survey in southern California, 1 in MPEC 2010-J33 -- 2010 EN65
D29Purple Mtn. Obs. Xuyi Station in China, 2 in MPEC 2010-J31 -- 2010 GT7, 85628
H06RAS Obs. Mayhill in New Mexico, 1 in MPEC 2010-J32 -- C/2010 J1
H11Rodeo Obs. in New Mexico, 1 in MPEC 2010-J32 -- C/2010 J1
854Sabino Canyon Obs. in Arizona, 1 in MPEC 2010-J32 -- C/2010 J1
291Spacewatch 1.8m telescope in Arizona, 2 in MPEC 2010-J31 -- 2010 JE, 2010 GX62
926Tenagra II Obs. in Arizona, 3 in MPECs 2010-J31 & 2010-J32 -- 2010 JG, 2010 JF, C/2010 J1
H10Tzec Maun Obs. Mayhill in New Mexico, 1 in MPEC 2010-J32 -- C/2010 J1
C51WISE in Earth polar orbit, 16 in MPEC 2010-J31 -- 2010 HR80, 2010 CD19, 2004 JX20, 2003 HB, 90367, 88188, 85989, 85818, 41429, 230118, 164207, 162038, 153842, 142563, 105141, 5731
A79Zvezdno Obshtestvo Obs. in Bulgaria, 1 in MPEC 2010-J32 -- C/2010 J1
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 7 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.





Notes for Today's Latest Risk Assessments
2010 JJ3JPL Sentry0217209811.2e-09-8.55-8.550JPL: "Analysis based on 13 observations spanning .62026 days (2010-May-06.28224 to 2010-May-06.9025)." Diameter approximately 0.059 km. from mean, weighted H=23.8.
2010 JK1NEODyS14392045-207997.78e-08-7.06-7.570NEODyS: "Based on 24 optical observations (of which 0 are rejected as outliers) from 2010/05/05.187 to 2010/05/07.183."
JPL Sentry13172052-210852.0e-08-7.81-7.980JPL: "Analysis based on 24 observations spanning 1.9961 days (2010-May-05.18574 to 2010-May-07.18186)." Diameter approximately 0.045 km. from mean, weighted H=24.4.
2010 JJ1NEODyS1317207117.95e-10-9.49-9.490NEODyS: "Based on 19 optical observations (of which 0 are rejected as outliers) from 2010/05/05.162 to 2010/05/06.180."
2010 HR80NEODyS1317R E M O V E D-
153814 2001 WN5NEODyS14392106-212254.31e-10-6.43-6.810NEODyS: "Based on 185 optical observations (of which 4 are rejected as outliers) from 1996/02/10.397 to 2010/05/06.332."

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 7 May '10

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

1703Grabbed MPEC 2010-J33 - 2010 EN65 - see above
1439Noted that NEODyS has updated its 153814 2001 WN5 risk assessment - see above
Noted that NEODyS has posted 2010 JK1 as an impact risk - see above
Grabbed MPEC 2010-J32 - Comet C/2010 J1 (Boattini) - see above
1318Grabbed MPEC 2010-J31 - Daily Orbit Update - see above
1317Noted that NEODyS has removed 2010 HR80 as an impact risk - see above
Noted that NEODyS has posted 2010 JJ1 as an impact risk - see above
Noted that JPL Sentry has updated its 2010 JK1 risk assessment - see above
0217Noted that JPL Sentry has posted 2010 JJ3 as an impact risk - see above
0141Grabbed MPEC 2010-J30 - 2010 JJ3 - see above
0017Grabbed MPEC 2010-J29 - 2010 JH3 - see above