Contents  on 25 January '11

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 25 January '11

The MPC's NEO Confirmation Page has 6 listings: 1 new, 5 updated

When last checked at 2300 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had one new and five updated listings. Of these, five were "one nighters." So far The Tracking News has counted a total of seven 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 25 January '11

Minor Planet Electronic Circulars

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


<< DOU on 25 Jan. '11 >>  MPEC 2011-B33 - "07:07 UT" - Daily Orbit Update

Observers  on 25 January '11

A total of 22 observers appear in today's MPEC.

CodeObserver / observatory
B66Casasco Obs. in Italy, 1 in MPEC 2011-B33 -- 3838
160Castelmartini Obs. in Italy, 14 in MPEC 2011-B33 -- 2011 AL37, 2010 JL33, 2008 CM20, 2007 EM88, 2007 CA27, 259802, 259221, 207945, 152563, 143381, 137084, 111253, 5496, 3122
703Catalina Sky Survey (CSS) in Arizona, 14 in MPEC 2011-B33 -- 2011 AL37, 2010 YB, 2010 WQ7, 2003 YS117, 2002 AV31, 96315, 85275, 262623, 248926, 243025, 175706, 159467, 152889, 143381
448Desert Moon Obs. in New Mexico, 3 in MPEC 2011-B33 -- 2011 AN16, 2011 AL52, 2011 AG5
J95Great Shefford Obs. in England, 1 in MPEC 2011-B33 -- 2011 AL37
379Hamamatsu-Yuto Obs. in Japan, 3 in MPEC 2011-B33 -- 2011 AL37, 96590, 3122
D95Kurihara Obs. in Japan, 1 in MPEC 2011-B33 -- 3200
704LINEAR in New Mexico, 4 in MPEC 2011-B33 -- 2010 PR10, 207945, 137052, 3122
560Madonna di Dossobuono Obs. in Italy, 3 in MPEC 2011-B33 -- 2011 AL37, 2010 JL33, 2007 CA27
B90Malina River Obs. in Italy, 1 in MPEC 2011-B33 -- 89830
G96Mt. Lemmon Survey (MLS) in Arizona, 3 in MPEC 2011-B33 -- 2003 DX10, 4660, 2212
J93Mt. Tuffley Obs. in England, 1 in MPEC 2011-B33 -- 3122
A13Naef Obs. in Switzerland, 3 in MPEC 2011-B33 -- 2011 BW10, 2010 LR68, 34613
204Schiaparelli Obs. in Italy, 10 in MPEC 2011-B33 -- 2011 AL52, 2011 AL37, 2010 YH, 2010 XY82, 2010 WP8, 2010 WE9, 2008 CM20, 2007 EJ, 2005 BT1, 2002 OS4
E12Siding Spring Survey (SSS) in New South Wales, 2 in MPEC 2011-B33 -- 2011 AN16, 2003 OU
587Sormano Obs. in Italy, 2 in MPEC 2011-B33 -- 2011 AM24, 2011 AL37
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2011-B33 -- 2011 AM24
291Spacewatch 1.8m telescope in Arizona, 4 in MPEC 2011-B33 -- 2011 AW55, 2011 AS26, 2011 AR26, 2010 TS149
I28Starhoo Obs. in Massachusetts, 2 in MPEC 2011-B33 -- 2010 LR68, 36284
B39Tradate Obs. in Italy, 3 in MPEC 2011-B33 -- 2011 AL37, 23183, 152563
C51WISE in Earth polar orbit, 6 in MPEC 2011-B33 -- 2010 YD3, 198856, 141484, 7482, 4401, 3554
I15Wishing Star Obs. in Rhode Island, 2 in MPEC 2011-B33 -- 2010 YH, 18882
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 25 January '11

Summary Risk Table for Risk Assessments Updated Today   (last checks: JPL at 2300 and NEODyS 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 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
2011 BY10JPL Sentry02052103-211029.9e-08-8.36-8.580JPL: "Analysis based on 11 observations spanning .51522 days (2011-Jan-24.43965 to 2011-Jan-24.95487)." Diameter approximately 0.014 km. from mean, weighted H=27.0.
2011 BX10NEODyS18202020-207661.05e-08-4.21-4.250NEODyS: "Based on 23 optical observations (of which 0 are rejected as outliers) from 2011-01-24.135 to 2011-01-24.824."
JPL Sentry01362020-2110389.3e-08-3.63-3.970JPL: "Analysis based on 23 observations spanning .68931 days (2011-Jan-24.13405 to 2011-Jan-24.82336)." Diameter approximately 0.776 km. from mean, weighted H=18.2.
2011 BV10NEODyS18202071-207114.7e-09-8.10-8.10NEODyS: "Based on 11 optical observations (of which 0 are rejected as outliers) from 2011-01-24.367 to 2011-01-24.567."
JPL Sentry01362071-210161.9e-08-7.46-7.540JPL: "Analysis based on 11 observations spanning .19995 days (2011-Jan-24.36632 to 2011-Jan-24.56627)." Diameter approximately 0.044 km. from mean, weighted H=24.4.
2011 AL52JPL Sentry18202049-210344.9e-09-4.71-5.220JPL: "Analysis based on 29 observations spanning 10.004 days (2011-Jan-14.0961 to 2011-Jan-24.10007)." Diameter approximately 1.200 km. from mean, weighted H=17.2.
NEODyS18202049-204917.1e-10-5.34-5.340NEODyS: "Based on 29 optical observations (of which 0 are rejected as outliers) from 2011-01-14.097 to 2011-01-24.101."
2011 AG5JPL Sentry18202036-205783.2e-05-2.99-3.180JPL: "Analysis based on 64 observations spanning 15.912 days (2011-Jan-08.2673 to 2011-Jan-24.17968)." Diameter approximately 0.140 km. from mean, weighted H=22.0.
NEODyS18202036-205793.18e-05-2.99-3.180NEODyS: "Based on 64 optical observations (of which 0 are rejected as outliers) from 2011-01-08.268 to 2011-01-24.180."

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 25 January '11

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

1820Noted that JPL Sentry has updated its 2011 AG5 risk assessment - see above
Noted that NEODyS has updated its 2011 AG5 risk assessment - see above
Noted that JPL Sentry has updated its 2011 AL52 risk assessment - see above
Noted that NEODyS has updated its 2011 AL52 risk assessment - see above
Noted that NEODyS has posted 2011 BV10 as an impact risk - see above
Noted that NEODyS has posted 2011 BX10 as an impact risk - see above
Grabbed MPEC 2011-B33 - Daily Orbit Update - see above
0205Noted that JPL Sentry has posted 2011 BY10 as an impact risk - see above
0136Noted that JPL Sentry has posted 2011 BV10 as an impact risk - see above
Noted that JPL Sentry has posted 2011 BX10 as an impact risk - see above