Contents  on 15 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 15 May '10

The MPC's NEO Confirmation Page has 12 listings: 1 new, 11 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had one new and eleven updated listings. Of these, four were "one nighters." So far The Tracking News has counted a total of 21 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 15 May '10

Minor Planet Electronic Circulars

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

MPEC 2010-J103 - "21:09 UT" - Comet C/2010 J3 (McMillan)

MPEC 2010-J102 - "18:07 UT" - 2010 JH87

MPEC 2010-J101 - "15:14 UT" - 2010 JG87

MPEC 2010-J100 - "15:09 UT" - 2010 JF87

MPEC 2010-J99 - "15:02 UT" - 2010 JE87

MPEC 2010-J98 - "14:47 UT" - 2010 JD87

<< DOU on 15 May '10 >>  MPEC 2010-J97 - "06:09 UT" - Daily Orbit Update

Observers  on 15 May '10

A total of 22 observing facilities appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 1 in MPEC 2010-J100 -- 2010 JF87
127Bornheim Obs. in Germany, 7 in MPEC 2010-J97 -- 2008 EE, 85839, 68216, 218863, 152931, 11066, 3554
A77Chante-Perdrix Obs. in France, 1 in MPEC 2010-J103 -- C/2010 J3
J01Cielo Profundo Obs. in Spain, 1 in MPEC 2010-J103 -- C/2010 J3
H26Doc Greiner Research Obs. (DGRO) in Wisconsin, 3 in MPEC 2010-J97 -- 2010 JV34, 2010 JN71, 2009 KD5
704LINEAR in New Mexico, 8 in MPEC 2010-J97 -- 2010 JV34, 2009 UV18, 2008 LW8, 85839, 85628, 6050, 1627, 887
J38La Vara Obs. in Spain, 1 in MPEC 2010-J103 -- C/2010 J3
844Los Molinos Obs. in Uruguay, 1 in MPEC 2010-J103 -- C/2010 J3
H01Magdalena Ridge Obs. (MRO) in New Mexico, 5 in MPECs 2010-J97, 2010-J99, 2010-J100, 2010-J101 & 2010-J102 -- 2010 JH87, 2010 JG87, 2010 JF87, 2010 JE87, 2010 HZ103
5682David Tholen's team on Mauna Kea in Hawaii, 2 in MPECs 2010-J100 & 2010-J102 -- 2010 JH87, 2010 JF87
900Moriyama Obs. in Japan, 1 in MPEC 2010-J103 -- C/2010 J3
G96Mt. Lemmon Survey (MLS) in Arizona, 2 in MPECs 2010-J97 & 2010-J101 -- 2010 JG87, 2009 UV18
6581Dave Balam via Plaskett 1.8m Telescope in British Columbia, 1 in MPEC 2010-J101 -- 2010 JG87
H11Rodeo Obs. in New Mexico, 1 in MPEC 2010-J100 -- 2010 JF87
H36Sandlot Obs. in Kansas, 1 in MPEC 2010-J97 -- 2010 JV39
E12Siding Spring Survey (SSS) in New South Wales, 2 in MPECs 2010-J97 & 2010-J98 -- 2010 JD87, 2007 VG189
691Spacewatch 0.9m telescope in Arizona, 2 in MPECs 2010-J97 & 2010-J103 -- C/2010 J3, 152964
291Spacewatch 1.8m telescope in Arizona, 8 in MPECs 2010-J97, 2010-J101 & 2010-J103 -- 2010 JT34, 2010 JG87, 2010 JE, C/2010 J3, 2010 HX107, 2010 HD33, 2000 LF6, 153814
926Tenagra II Obs. in Arizona, 4 in MPEC 2010-J97 -- 2010 JV34, 2010 JO33, 2010 JN71, 2010 JK41
D96Tzec Maun Obs. Moorook in South Australia, 1 in MPEC 2010-J103 -- C/2010 J3
C51WISE in Earth polar orbit, 5 in MPECs 2010-J98, 2010-J99, 2010-J100, 2010-J101 & 2010-J102 -- 2010 JH87, 2010 JG87, 2010 JF87, 2010 JE87, 2010 JD87
J08Zonalunar Obs. in Spain, 1 in MPEC 2010-J103 -- C/2010 J3
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 15 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 JF87JPL Sentry17392025-2110111.0e-08-4.86-5.510JPL: "Analysis based on 31 observations spanning 3.6350 days (2010-May-11.78114 to 2010-May-15.416095)." Diameter approximately 0.558 km. from mean, weighted H=18.9.
2010 JH80NEODyS15232045-2089382.55e-07-6.10-6.770NEODyS: "Based on 14 optical observations (of which 0 are rejected as outliers) from 2010/05/13.256 to 2010/05/14.275."
153814 2001 WN5NEODyS15232107-212232.61e-10-6.65-6.810NEODyS: "Based on 191 optical observations (of which 4 are rejected as outliers) from 1996/02/10.397 to 2010/05/14.263."

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 15 May '10

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

2119Grabbed MPEC 2010-J103 - Comet C/2010 J3 (McMillan) - see above
1829Grabbed MPEC 2010-J102 - 2010 JH87 - see above
1739Noted that JPL Sentry has posted 2010 JF87 as an impact risk - see above
1523Noted that NEODyS has updated its 153814 2001 WN5 risk assessment - see above
Noted that NEODyS has posted 2010 JH80 as an impact risk - see above
Grabbed MPEC 2010-J97 - Daily Orbit Update - see above
Grabbed MPEC 2010-J98 - 2010 JD87 - see above
Grabbed MPEC 2010-J99 - 2010 JE87 - see above
Grabbed MPEC 2010-J100 - 2010 JF87 - see above
Grabbed MPEC 2010-J101 - 2010 JG87 - see above