Contents  on 30 June '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 30 June '10

The MPC's NEO Confirmation Page has 7 listings: 3 new, 4 updated

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had three new and four updated listings. So far The Tracking News has counted a total of eight 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 30 June '10

Minor Planet Electronic Circulars

As of last check at 2359 UTC, there have been two MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2010-M71 - "21:31 UT" - 2010 AB78

<< DOU on 30 June '10 >>  MPEC 2010-M70 - "06:08 UT" - Daily Orbit Update

Observers  on 30 June '10

Eleven observing facilities appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 11 in MPEC 2010-M70 -- 2010 MY1, 2010 MW1, 2010 MH1, 2010 JV153, 2010 FO92, 2010 DW1, 2010 CL18, 2006 KM103, 2006 KD1, 2004 FX31, 2004 BE68
E18BDI Obs. in New South Wales, 1 in MPEC 2010-M70 -- 2010 LY63
A81Balzaretto Obs. in Italy, 1 in MPEC 2010-M70 -- 161998
H26Doc Greiner Research Obs. (DGRO) in Wisconsin, 3 in MPEC 2010-M70 -- 2010 MP1, 2007 HA59, 2005 ED318
5682David Tholen's team on Mauna Kea in Hawaii, 2 in MPECs 2010-M70 & 2010-M71 -- 2010 KY39, 2010 AB78
118Modra Obs. in Slovakia, 1 in MPEC 2010-M70 -- 2010 EV45
644NEAT's Mt. Palomar telescope in southern California, 1 in MPEC 2010-M71 -- 2010 AB78
2615program code 5 using the Palomar Digitized Sky Survey in southern California, 1 in MPEC 2010-M70 -- 2007 OG3
6735Jim Young via Table Mtn. Obs. in southern California, 2 in MPEC 2010-M70 -- 2010 LM68, 2010 CL18
C51WISE in Earth polar orbit, 44 in MPEC 2010-M70 -- 2010 LQ33, 2010 KZ117, 2010 KU7, 2010 JK33, 2010 GS7, 2010 FO92, 2010 EN44, 2010 EH20, 2008 EV5, 2008 EB9, 2007 WV4, 2006 HY51, 2005 SC71, 2002 LT24, 2000 HD74, 85839, 68216, 243147, 238456, 238063, 235756, 234341, 232382, 221980, 218863, 218017, 19764, 194268, 184990, 162998, 153219, 153201, 152964, 152941, 140158, 137805, 11398, 8201, 5653, 5604, 5370, 5143, 1980, 1864
I15Wishing Star Obs. in Rhode Island, 1 in MPEC 2010-M70 -- 54789
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 30 June '10

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2359 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 EN44NEODyS2020203514.62e-11-8.75-8.750NEODyS: "Based on 7 optical observations (of which 0 are rejected as outliers) from 2010/03/12.067 to 2010/03/12.398."
JPL Sentry15362014-21103947.3e-07-6.18-7.130JPL: "Analysis based on 7 observations spanning .33082 days (2010-Mar-12.06614 to 2010-Mar-12.39696)." Diameter approximately 0.030 km. from mean, weighted H=25.2.

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 30 June '10

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

2208Grabbed MPEC 2010-M71 - 2010 AB78 - see above
2020Noted that NEODyS has posted 2010 EN44 as an impact risk - see above
1537Grabbed MPEC 2010-M70 - Daily Orbit Update - see above
1536Noted that JPL Sentry has updated its 2010 EN44 risk assessment - see above