Contents  on 11 January '12

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 11 January '12

The MPC's NEO Confirmation Page has 4 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had four objects listed. Of these, one was a "one nighter." So far The Tracking News has counted a total of ten listings on the NEOCP 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 11 January '12

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 2012-A49 - "22:54 UT" - 2011 RR12


MPEC 2012-A48 - "13:05 UT" - 2012 AP10


MPEC 2012-A47 - "13:03 UT" - 2012 AO10


MPEC 2012-A46 - "13:01 UT" - 2012 AN10


MPEC 2012-A45 - "12:58 UT" - 2012 AM10


<< DOU on 11 Jan. '12 >>  MPEC 2012-A44 - "06:01 UT" - Daily Orbit Update

Observers  on 11 January '12

A total of 23 observers appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 19 in MPECs 2012-A44, 2012-A45, 2012-A46, 2012-A47 & 2012-A48 -- 2012 AP10, 2012 AO10, 2012 AN10, 2012 AM10, 2012 AE1, 2012 AC3, 2011 YY62, 2011 YS62, 2011 YH40, 2011 XE, 2011 VS5, 2011 QF14, 2011 FZ2, 2007 SP6, 2005 UJ159, 2004 YU5, 2004 JO2, 311044, 137120
J51Atlante Obs. in the Canary Islands, 1 in MPEC 2012-A44 -- 2011 SL102
160Castelmartini Obs. in Italy, 10 in MPECs 2012-A44 & 2012-A46 -- 2012 AN10, 2012 AE1, 2011 YJ28, 2011 YH40, 2011 XO3, 2011 XE1, 2011 WV134, 2011 SL102, 2008 WZ13, 310842
703Catalina Sky Survey in Arizona, 1 in MPEC 2012-A44 -- 311044
G48Doc Greiner Research Obs. Rancho Hildalgo (DGRO-RH) in New Mexico, 4 in MPECs 2012-A44 & 2012-A46 -- 2012 AN10, 2012 AE1, 2011 YA, 175706
595Farra d'Isonzo Obs. in Italy, 1 in MPEC 2012-A46 -- 2012 AN10
203GiaGa Obs. in Italy, 1 in MPEC 2012-A44 -- 310842
379Hamamatsu-Yuto Obs. in Japan, 1 in MPEC 2012-A44 -- 310842
I36Los Campitos Obs. in Argentina, 2 in MPEC 2012-A44 -- 2011 OV18, 137671
560Madonna di Dossobuono Obs. in Italy, 1 in MPEC 2012-A44 -- 310842
B28Mandi Obs. in Italy, 1 in MPEC 2012-A46 -- 2012 AN10
G96Mt. Lemmon Survey (MLS) in Arizona, 7 in MPECs 2012-A44, 2012-A45, 2012-A46, 2012-A47 & 2012-A48 -- 2012 AP10, 2012 AO10, 2012 AN10, 2012 AM10, 2011 SE108, 2008 WZ13, 90403
644NEAT's Mt. Palomar telescope in southern California, 1 in MPEC 2012-A49 -- 2011 RR12
608NEAT's USAF Haleakala telescope in Hawaii, 1 in MPEC 2012-A44 -- 5604
A24New Millennium Obs. in Italy, 14 in MPECs 2012-A44, 2012-A45 & 2012-A46 -- 2012 AN10, 2012 AM10, 2011 YA, 2011 SL102, 311044, 310842, 24475, 209924, 20826, 137805, 4183, 3200, 2201, 1036
F51Pan-STARRS 1 (PS1) in Hawaii, 3 in MPEC 2012-A44 -- 85709, 311555, 9400
I20Rio Cuarto Obs. in Argentina, 1 in MPEC 2012-A44 -- 312473
854Sabino Canyon Obs. in Arizona, 1 in MPEC 2012-A46 -- 2012 AN10
H36Sandlot Obs. in Kansas, 3 in MPECs 2012-A45, 2012-A46 & 2012-A47 -- 2012 AO10, 2012 AN10, 2012 AM10
204Schiaparelli Obs. in Italy, 16 in MPECs 2012-A44, 2012-A45, 2012-A46 & 2012-A47 -- 2012 AO10, 2012 AN10, 2012 AM10, 2010 CL19, 2009 WR6, 2007 SP6, 2006 MJ10, 2005 YS, 2005 UJ159, 2004 YU5, 2004 QJ7, 2004 JO2, 311555, 311044, 310842, 310442
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2012-A44 -- 2006 MJ10
I93St. Pardon de Conques Obs. in France, 2 in MPECs 2012-A45 & 2012-A46 -- 2012 AN10, 2012 AM10
C44Volta Obs. in Italy, 1 in MPEC 2012-A46 -- 2012 AN10
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 11 January '12

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. 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 CLOMON2 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
2012 AP10JPL Sentry17452029-21101038.2e-05-5.05-6.030JPL: "Analysis based on 20 observations spanning .20258 days (2012-Jan-11.08359 to 2012-Jan-11.28617)." Diameter approximately 0.019 km. from mean, weighted H=26.2.

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 11 January '12

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

2359Grabbed MPEC 2012-A49 - 2011 RR12 - see above
1745Noted that JPL Sentry has posted 2012 AP10 as an impact risk - see above
Grabbed MPEC 2012-A44 - Daily Orbit Update - see above
Grabbed MPEC 2012-A45 - 2012 AM10 - see above
Grabbed MPEC 2012-A46 - 2012 AN10 - see above
Grabbed MPEC 2012-A47 - 2012 AO10 - see above
Grabbed MPEC 2012-A48 - 2012 AP10 - see above