Contents  on 10 January '10

Resources:

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 10 January '10

The MPC's NEO Confirmation Page has 12 listings: 6 new, 6 updated

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had six new and six updated listings. Of these, ten were "one nighters." So far The Tracking News has counted a total of eighteen 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 10 January '10

Minor Planet Electronic Circulars

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


MPEC 2010-A51 - "16:33 UT" - Comet P/2010 A2 (LINEAR)


MPEC 2010-A50 - "16:25 UT" - Comet P/2010 A1 (Hill)


<< DOU on 10 Jan. '10 >>  MPEC 2010-A49 - "07:11 UT" - Daily Orbit Update

Observers  on 10 January '10

Fifteen observing facilities appear in today's MPECs.

CodeObserver / observatory
349Ageo Obs. in Japan, 1 in MPEC 2010-A50 -- P/2010 A1
703Catalina Sky Survey (CSS) in Arizona, 4 in MPEC 2010-A49 -- 2009 WF, 2004 XM35, 16064, 138937
J01Cielo Profundo Obs. in Spain, 1 in MPEC 2010-A50 -- P/2010 A1
H26Doc Greiner Research Obs. (DGRO) in Wisconsin, 2 in MPEC 2010-A49 -- 2009 XR2, 2007 MK13
372Geisei Obs. in Japan, 1 in MPEC 2010-A50 -- P/2010 A1
379Hamamatsu-Yuto Obs. in Japan, 6 in MPEC 2010-A49 -- 2009 XR2, 2008 YZ32, 2007 MK13, 2005 MC, 2004 XD50, 5626
D95Kurihara Obs. in Japan, 1 in MPEC 2010-A49 -- 2008 YZ32
H01Magdalena Ridge Obs. (MRO) in New Mexico, 4 in MPECs 2010-A49 & 2010-A51 -- 2010 AR1, 2010 AK, 2010 AJ, P/2010 A2
J40Malaga Obs. in Spain, 1 in MPEC 2010-A51 -- P/2010 A2
213Montcabre Obs. in Spain, 1 in MPEC 2010-A51 -- P/2010 A2
G96Mt. Lemmon Survey (MLS) in Arizona, 4 in MPEC 2010-A49 -- 2009 YS6, 2009 NA, 2009 MX6, 194268
J47Nazaret Obs. in Spain, 1 in MPEC 2010-A51 -- P/2010 A2
H06RAS Obs. Mayhill in New Mexico, 2 in MPECs 2010-A50 & 2010-A51 -- P/2010 A2, P/2010 A1
I20Rio Cuarto Obs. in Argentina, 3 in MPEC 2010-A49 -- 2009 WR6, 2006 UR, 2005 MC
291Spacewatch 1.8m telescope in Arizona, 4 in MPEC 2010-A49 -- 2010 AR1, 2010 AK, 2010 AJ, 2010 AD3
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 10 January '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. Beginning Jan. 22nd, both are also posting impact solutions beyond 100 years for a few 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.
0000NNN000

Object

Risk
Monitor
When
Noted
UTC
0000T0000
Year
Range

VI
#
000NN00
Prob
Cum
T0000
PS
Cum
T0000
PS
Max

T
S


Notes for Today's Latest Risk Assessments
2010 AD3JPL Sentry1624R E M O V E DJPL: Risk listing removed at 0949 UTC.
2010 AR1NEODyS1625R E M O V E D-
JPL Sentry1624R E M O V E DJPL: Risk listing removed at 0954 UTC.
2010 AKNEODyS1625R E M O V E D-
2010 AJNEODyS1625R E M O V E D-
JPL Sentry1624R E M O V E DJPL: Risk listing removed at 0948 UTC.

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 10 January '10

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

1802Grabbed MPEC 2010-A50 - Comet P/2010 A1 (Hill) - see above
Grabbed MPEC 2010-A51 - Comet P/2010 A2 (LINEAR) - see above
1625Noted that NEODyS has removed 2010 AJ as an impact risk - see above
Noted that NEODyS has removed 2010 AK as an impact risk - see above
Noted that NEODyS has removed 2010 AR1 as an impact risk - see above
Grabbed MPEC 2010-A49 - Daily Orbit Update - see above
1624Noted that JPL Sentry has removed 2010 AD3 as an impact risk - see above
Noted that JPL Sentry has removed 2010 AJ as an impact risk - see above
Noted that JPL Sentry has removed 2010 AR1 as an impact risk - see above