Contents  on 12 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 12 January '12

The MPC's NEO Confirmation Page has 5 listings

When last checked at 2307 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had five objects listed.

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 12 January '12

Minor Planet Electronic Circulars

As of last check at 2307 UTC, there has been one MPEC posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts. No Daily Orbit Update DOU MPEC has been posted yet, so visit the MPC Status Page for possible explanation.


MPEC 2012-A50 - "00:23 UT" - 2003 AF23

Observers  on 12 January '12

Three observers appear in today's MPEC.

CodeObserver / observatory
J95Great Shefford Obs. in England, 1 in MPEC 2012-A50 -- 2003 AF23
A24New Millennium Obs. in Italy, 1 in MPEC 2012-A50 -- 2003 AF23
E12Siding Spring Survey in New South Wales, 1 in MPEC 2012-A50 -- 2003 AF23
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 12 January '12

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2307 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 AP10NEODyS15512047-2089656.51e-05-5.10-6.010NEODyS: "Based on 20 optical observations (of which 0 are rejected as outliers) from 2012-01-11.084 to 2012-01-11.287."

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 12 January '12

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

1551Noted that NEODyS has posted 2012 AP10 as an impact risk - see above
0028Grabbed MPEC 2012-A50 - 2003 AF23 - see above