Contents  on 11 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 11 May '10

The MPC's NEO Confirmation Page has 6 listings: 2 new, 4 updated

When last checked at 2300 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had two new and four updated listings. Of these, three were "one nighters." So far The Tracking News has counted a total of sixteen 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 11 May '10

Minor Planet Electronic Circulars

As of last check at 2300 UTC, there have been eleven MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2010-J72 - "17:24 UT" - 2010 JA43

MPEC 2010-J71 - "16:15 UT" - 2010 JM41

MPEC 2010-J70 - "16:10 UT" - 2010 JL41

MPEC 2010-J69 - "16:06 UT" - 2010 JK41

MPEC 2010-J68 - "15:55 UT" - 2010 JJ41

MPEC 2010-J67 - "12:29 UT" - 2010 HX107

MPEC 2010-J66 - "10:49 UT" - 2010 JW39

MPEC 2010-J65 - "10:46 UT" - 2010 JV39

MPEC 2010-J64 - "10:44 UT" - 2010 JU39

MPEC 2010-J63 - "10:42 UT" - 2010 JT39

<< DOU on 11 May '10 >>  MPEC 2010-J62 - "06:08 UT" - Daily Orbit Update

Observers  on 11 May '10

Seventeen observing facilities appear in today's MPECs.

CodeObserver / observatory
703Catalina Sky Survey (CSS) in Arizona, 8 in MPECs 2010-J62, 2010-J69 & 2010-J70 -- 2010 JL41, 2010 JK41, 2005 GB120, 2002 YF4, 88254, 68216, 40267, 230979
J01Cielo Profundo Obs. in Spain, 1 in MPEC 2010-J70 -- 2010 JL41
J95Great Shefford Obs. in England, 3 in MPECs 2010-J62, 2010-J69 & 2010-J70 -- 2010 JO33, 2010 JL41, 2010 JK41
I96Hyperion Obs. in Spain, 1 in MPEC 2010-J62 -- 2010 JV34
682Kanab Obs. in Utah, 1 in MPEC 2010-J62 -- 2010 JE
704LINEAR in New Mexico, 4 in MPEC 2010-J62 -- 2010 HY103, 2004 TB18, 68359, 52750
H01Magdalena Ridge Obs. (MRO) in New Mexico, 7 in MPECs 2010-J62, 2010-J64, 2010-J65, 2010-J66, 2010-J68, 2010-J69 & 2010-J70 -- 2010 JW39, 2010 JV39, 2010 JU39, 2010 JL41, 2010 JL33, 2010 JK41, 2010 JJ41
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2010-J67 -- 2010 HX107
118Modra Obs. in Slovakia, 3 in MPECs 2010-J65, 2010-J69 & 2010-J70 -- 2010 JV39, 2010 JL41, 2010 JK41
474Mt. John Obs. in New Zealand, 1 in MPEC 2010-J68 -- 2010 JJ41
G96Mt. Lemmon Survey (MLS) in Arizona, 8 in MPECs 2010-J62, 2010-J63, 2010-J64, 2010-J65, 2010-J66, 2010-J68 & 2010-J71 -- 2010 JW39, 2010 JV39, 2010 JU39, 2010 JT39, 2010 JM41, 2010 JK1, 2010 JJ41, 186822
6581Dave Balam via Plaskett 1.8m Telescope in British Columbia, 1 in MPEC 2010-J70 -- 2010 JL41
854Sabino Canyon Obs. in Arizona, 2 in MPECs 2010-J69 & 2010-J70 -- 2010 JL41, 2010 JK41
291Spacewatch 1.8m telescope in Arizona, 6 in MPECs 2010-J62, 2010-J66, 2010-J68 & 2010-J71 -- 2010 JW39, 2010 JM41, 2010 JJ41, 2010 JE, 2010 HR80, 2010 GR75
926Tenagra II Obs. in Arizona, 13 in MPECs 2010-J62, 2010-J64, 2010-J69, 2010-J70 & 2010-J71 -- 2010 JW34, 2010 JV34, 2010 JU39, 2010 JR34, 2010 JO33, 2010 JM41, 2010 JL41, 2010 JK41, 2010 JH3, 2010 JG, 2010 JA35, 2010 JA, 2010 HY103
H10Tzec Maun Obs. Mayhill in New Mexico, 1 in MPEC 2010-J62 -- 2010 JV34
C51WISE in Earth polar orbit, 2 in MPECs 2010-J67 & 2010-J72 -- 2010 JA43, 2010 HX107
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 11 May '10

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2300 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 JA43JPL Sentry20112014-2109411.4e-08-5.69-6.110JPL: "Analysis based on 21 observations spanning 2.7122 days (2010-May-04.53905 to 2010-May-07.25122)." Diameter approximately 0.160 km. from mean, weighted H=21.6.
2010 JM41JPL Sentry19002031-2082123.8e-09-6.36-6.960JPL: "Analysis based on 14 observations spanning .93973 days (2010-May-10.44465 to 2010-May-11.38438)." Diameter approximately 0.210 km. from mean, weighted H=21.0.
2010 JU39JPL Sentry14292012-21092933.3e-06-1.87-2.030JPL: "Analysis based on 22 observations spanning 1.8767 days (2010-May-09.33998 to 2010-May-11.21668)." Diameter approximately 0.432 km. from mean, weighted H=19.5.
2010 JL33JPL Sentry14292020-2106173.2e-09-4.71-5.330JPL: "Analysis based on 31 observations spanning 3.9052 days (2010-May-06.36978 to 2010-May-10.27497)." Diameter approximately 0.843 km. from mean, weighted H=18.0.
NEODyS14292020-205343.18e-10-5.51-5.750NEODyS: "Based on 31 optical observations (of which 0 are rejected as outliers) from 2010/05/06.371 to 2010/05/10.276."
2010 JK1JPL Sentry1429209118.2e-08-7.25-7.250JPL: "Analysis based on 34 observations spanning 29.738 days (2010-Apr-10.36265 to 2010-May-10.100827)." Diameter approximately 0.043 km. from mean, weighted H=24.5.
NEODyS1429R E M O V E D-

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 11 May '10

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

2011Noted that JPL Sentry has posted 2010 JA43 as an impact risk - see above
1900Noted that JPL Sentry has posted 2010 JM41 as an impact risk - see above
Grabbed MPEC 2010-J72 - 2010 JA43 - see above
1713Grabbed MPEC 2010-J69 - 2010 JK41 - see above
Grabbed MPEC 2010-J70 - 2010 JL41 - see above
Grabbed MPEC 2010-J71 - 2010 JM41 - see above
1603Grabbed MPEC 2010-J68 - 2010 JJ41 - see above
1429Noted that JPL Sentry has updated its 2010 JK1 risk assessment - see above
Noted that NEODyS 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 JPL Sentry has posted 2010 JU39 as an impact risk - see above
Grabbed MPEC 2010-J62 - Daily Orbit Update - see above
Grabbed MPEC 2010-J63 - 2010 JT39 - see above
Grabbed MPEC 2010-J64 - 2010 JU39 - see above
Grabbed MPEC 2010-J65 - 2010 JV39 - see above
Grabbed MPEC 2010-J66 - 2010 JW39 - see above
Grabbed MPEC 2010-J67 - 2010 HX107 - see above