Contents  on 27 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 27 May '10

The MPC's NEO Confirmation Page has 10 listings: 8 new, 2 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had eight new and two updated listings. Of these, three were "one nighters." So far The Tracking News has counted a total of eleven 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 27 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-K66 - "22:37 UT" - 2010 KR59

MPEC 2010-K65 - "21:21 UT" - 2010 AU118

MPEC 2010-K64 - "21:10 UT" - 2010 AR85

<< DOU on 27 May '10 >>  MPEC 2010-K63 - "06:09 UT" - Daily Orbit Update

Observers  on 27 May '10

Thirteen observing facilities appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 15 in MPECs 2010-K63 & 2010-K66 -- 2010 KV39, 2010 KR59, 2010 KK37, 2010 JG88, 2010 GA34, 2010 EV45, 2010 CL18, 2010 CJ171, 2009 XC2, 2009 SO103, 2009 KD5, 2005 GB120, 2004 KH17, 2004 JX20, 2003 NZ6
850Cordell-Lorenz Obs. in Tennessee, 1 in MPEC 2010-K66 -- 2010 KR59
448Desert Moon Obs. in New Mexico, 3 in MPEC 2010-K63 -- 2010 KK37, 2010 FQ, 237442
F658David Tholen's team in Hawaii via Faulkes Telescope North in Hawaii, 1 in MPEC 2010-K66 -- 2010 KR59
H01Magdalena Ridge Obs. in New Mexico, 1 in MPEC 2010-K66 -- 2010 KR59
5682David Tholen's team on Mauna Kea in Hawaii, 2 in MPEC 2010-K63 -- 2010 DM21, 2010 DH77
G96Mt. Lemmon Survey in Arizona, 1 in MPEC 2010-K66 -- 2010 KR59
204Schiaparelli Obs. in Italy, 12 in MPEC 2010-K63 -- 2010 KK37, 2010 KB8, 2010 KA8, 2010 JV34, 2010 JN71, 2010 JK41, 2010 JG88, 2010 FC81, 2009 KD5, 2008 LW8, 2005 GB120, 2004 JX20
291Spacewatch 1.8m telescope in Arizona, 1 in MPEC 2010-K66 -- 2010 KR59
926Tenagra II Obs. in Arizona, 4 in MPEC 2010-K63 -- 2010 KV39, 2010 KK37, 2010 JV34, 2010 JO71
H10Tzec Maun Obs. Mayhill in New Mexico, 2 in MPEC 2010-K63 -- 12923, 4055
C51WISE in Earth polar orbit, 10 in MPECs 2010-K63, 2010-K64, 2010-K65 & 2010-K66 -- 2010 KR59, 2010 AU118, 2010 AR85, 2010 AG79, 2010 AB78, 2009 UK, 2007 YZ, 2007 TA19, 1999 RC32, 1998 OK1
I15Wishing Star Obs. in Rhode Island, 1 in MPEC 2010-K63 -- 2010 KV39
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 27 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 AU118JPL Sentry23072020-2106371.7e-08-3.77-4.420JPL: "Analysis based on 19 observations spanning 1.3896 days (2010-Jan-13.89477 to 2010-Jan-15.28441)." Diameter approximately 0.894 km. from mean, weighted H=17.9.
2010 AR85JPL Sentry23582015-2106351.9e-08-3.11-3.370JPL: "Analysis based on 12 observations spanning 1.7202 days (2010-Jan-07.86121 to 2010-Jan-09.58143)." Diameter approximately 1.100 km. from mean, weighted H=17.4.

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 27 May '10

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

2358Noted that JPL Sentry has posted 2010 AR85 as an impact risk - see above
2307Noted that JPL Sentry has posted 2010 AU118 as an impact risk - see above
Grabbed MPEC 2010-K66 - 2010 KR59 - see above
2202Grabbed MPEC 2010-K65 - 2010 AU118 - see above
2115Grabbed MPEC 2010-K64 - 2010 AR85 - see above
1540Grabbed MPEC 2010-K63 - Daily Orbit Update - see above