Contents  on 14 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 14 May '10

The MPC's NEO Confirmation Page has 16 listings: 7 new, 9 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had seven new and nine updated listings. Of these, two were "one nighters." So far The Tracking News has counted a total of 20 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 14 May '10

Minor Planet Electronic Circulars

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

MPEC 2010-J96 - "21:26 UT" - Comet C/2010 J5 (McNaught)

MPEC 2010-J95 - "14:47 UT" - 2010 JH80

MPEC 2010-J94 - "14:43 UT" - 2010 JG80

MPEC 2010-J93 - "14:11 UT" - Comet C/2010 D3 (WISE)

<< DOU on 14 May '10 >>  MPEC 2010-J92 - "06:09 UT" - Daily Orbit Update

MPEC 2010-J91 - "01:09 UT" - Comet C/2010 J4 (WISE)

Observers  on 14 May '10

Sixteen observing facilities appear in today's MPECs.

CodeObserver / observatory
834AAAA Buenos Aires Obs. in Argentina, 1 in MPEC 2010-J92 -- 234061
703Catalina Sky Survey (CSS) in Arizona, 4 in MPEC 2010-J92 -- 2000 HD74, 85839, 237442, 1627
448Desert Moon Obs. in New Mexico, 4 in MPEC 2010-J92 -- 2010 JV34, 2001 WN1, 2001 RX11, 7839
H26Doc Greiner Research Obs. (DGRO) in Wisconsin, 2 in MPEC 2010-J92 -- 2010 JV34, 2008 LW8
704LINEAR in New Mexico, 1 in MPEC 2010-J92 -- 85839
G96Mt. Lemmon Survey (MLS) in Arizona, 4 in MPECs 2010-J92, 2010-J94 & 2010-J95 -- 2010 JH80, 2010 JG80, 2010 JF, 136874
658Plaskett 1.8m Telescope in British Columbia, 1 in MPEC 2010-J91 -- C/2010 J4
D90RAS Obs. Moorook in South Australia, 2 in MPECs 2010-J93 & 2010-J96 -- C/2010 J5, C/2010 D3
I33SOAR in Chile, 1 in MPEC 2010-J93 -- C/2010 D3
E12Siding Spring Survey (SSS) in New South Wales, 2 in MPECs 2010-J92 & 2010-J96 -- C/2010 J5, 162566
691Spacewatch 0.9m telescope in Arizona, 2 in MPECs 2010-J91 & 2010-J92 -- C/2010 J4, 2006 KV86
291Spacewatch 1.8m telescope in Arizona, 7 in MPEC 2010-J92 -- 2010 JM41, 2010 JL33, 2009 WM1, 2004 BE68, 2000 YF29, 1998 WB2, 153814
926Tenagra II Obs. in Arizona, 6 in MPECs 2010-J91 & 2010-J92 -- 2010 JO33, 2010 JN71, 2010 JL41, 2010 JK41, 2010 JJ1, C/2010 J4
D96Tzec Maun Obs. Moorook in South Australia, 1 in MPEC 2010-J96 -- C/2010 J5
C51WISE in Earth polar orbit, 1 in MPEC 2010-J91 -- C/2010 J4
I13Washington D.C. Obs. in Washington, D.C., 1 in MPEC 2010-J92 -- 1627
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 14 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 JH80JPL Sentry17482045-2110761.1e-06-5.55-6.370JPL: "Analysis based on 14 observations spanning 1.0189 days (2010-May-13.25519 to 2010-May-14.27413)." Diameter approximately 0.042 km. from mean, weighted H=24.6.
2010 JM41JPL Sentry1434R E M O V E DJPL: Risk listing removed at 0952 UTC.
NEODyS1434R E M O V E D-
2010 JL33JPL Sentry14342030-204323.0e-10-5.77-5.910JPL: "Analysis based on 39 observations spanning 6.9181 days (2010-May-06.36978 to 2010-May-13.2879)." Diameter approximately 0.836 km. from mean, weighted H=18.0.
2009 WM1JPL Sentry1434209116.3e-09-6.15-6.150JPL: "Analysis based on 89 observations spanning 176.69 days (2009-Nov-17.4641 to 2010-May-13.1496)." Diameter approximately 0.280 km. from mean, weighted H=20.4.
153814 2001 WN5NEODyS14342106-212243.65e-10-6.50-6.810NEODyS: "Based on 188 optical observations (of which 4 are rejected as outliers) from 1996/02/10.397 to 2010/05/13.245."

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 14 May '10

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

2147Grabbed MPEC 2010-J96 - Comet C/2010 J5 (McNaught) - see above
1748Noted that JPL Sentry has posted 2010 JH80 as an impact risk - see above
1634Grabbed MPEC 2010-J94 - 2010 JG80 - see above
Grabbed MPEC 2010-J95 - 2010 JH80 - see above
1434Noted that NEODyS has updated its 153814 2001 WN5 risk assessment - see above
Noted that JPL Sentry has updated its 2009 WM1 risk assessment - see above
Noted that JPL Sentry has updated its 2010 JL33 risk assessment - see above
Noted that JPL Sentry has removed 2010 JM41 as an impact risk - see above
Noted that NEODyS has removed 2010 JM41 as an impact risk - see above
Grabbed MPEC 2010-J92 - Daily Orbit Update - see above
Grabbed MPEC 2010-J93 - Comet C/2010 D3 (WISE) - see above
0441Grabbed MPEC 2010-J91 - Comet C/2010 J4 (WISE) - see above