Contents  on 24 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 24 June '10

The MPC's NEO Confirmation Page has 10 listings: 5 new, 5 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had five new and five updated listings. Of these, five were "one nighters." So far The Tracking News has counted a total of fifteen 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 24 June '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-M55 - "19:25 UT" - 2010 MZ1

MPEC 2010-M54 - "18:09 UT" - 2010 MY1

<< DOU on 24 June '10 >>  MPEC 2010-M53 - "06:08 UT" - Daily Orbit Update

MPEC 2010-M52 - "04:31 UT" - 2010 MW1

Observers  on 24 June '10

Sixteen observing facilities appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 5 in MPEC 2010-M53 -- 2010 MQ, 2010 MP1, 2010 MC, 2010 LM68, 2010 LM34
J51Atlante Obs. in the Canary Islands, 1 in MPEC 2010-M53 -- 2009 KD5
B75Betelgeuse Station in Italy, 2 in MPEC 2010-M53 -- 2009 KC3, 17274
703Catalina Sky Survey (CSS) in Arizona, 2 in MPECs 2010-M53 & 2010-M54 -- 2010 MY1, 2010 AE
J95Great Shefford Obs. in England, 2 in MPECs 2010-M52 & 2010-M54 -- 2010 MY1, 2010 MW1
5682David Tholen's team on Mauna Kea in Hawaii, 3 in MPEC 2010-M53 -- 2010 FH81, 2010 EX119, 2010 AB78
B67Mirasteilas Obs. in Switzerland, 2 in MPEC 2010-M53 -- 2006 KL21, 237442
G96Mt. Lemmon Survey (MLS) in Arizona, 6 in MPECs 2010-M52, 2010-M53, 2010-M54 & 2010-M55 -- 2010 MZ1, 2010 MY1, 2010 MW1, 2010 JG87, 138847, 7088
D90`Kevin Hills in England via RAS Obs. Moorook in South Australia, 1 in MPEC 2010-M53 -- 2010 LZ63
854Sabino Canyon Obs. in Arizona, 1 in MPEC 2010-M54 -- 2010 MY1
B04Saint-Barthelemy Obs. in Italy, 1 in MPEC 2010-M54 -- 2010 MY1
587Sormano Obs. in Italy, 1 in MPEC 2010-M52 -- 2010 MW1
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2010-M53 -- 2010 EX119
926Tenagra II Obs. in Arizona, 1 in MPEC 2010-M54 -- 2010 MY1
D96Tzec Maun Obs. Moorook in South Australia, 1 in MPEC 2010-M53 -- 2010 LY63
198Wildberg Obs. in Germany, 1 in MPEC 2010-M53 -- 2010 LE15
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 24 June '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 MZ1JPL Sentry2112201612.5e-10-8.25-8.250JPL: "Analysis based on 14 observations spanning .12392 days (2010-Jun-24.23481 to 2010-Jun-24.35873)." Diameter approximately 0.040 km. from mean, weighted H=24.6.

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 24 June '10

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

2112Noted that JPL Sentry has posted 2010 MZ1 as an impact risk - see above
2000Grabbed MPEC 2010-M55 - 2010 MZ1 - see above
1905Grabbed MPEC 2010-M54 - 2010 MY1 - see above
1545Grabbed MPEC 2010-M53 - Daily Orbit Update - see above
0442Grabbed MPEC 2010-M52 - 2010 MW1 - see above