Contents  on 25 March '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 25 March '10

The MPC's NEO Confirmation Page has 3 listings: 2 new, 1 updated

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

Minor Planet Electronic Circulars

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


MPEC 2010-F79 - "18:11 UT" - 2009 XE11


MPEC 2010-F78 - "13:13 UT" - 2005 XB1


<< DOU on 25 Mar. '10 >>  MPEC 2010-F77 - "06:11 UT" - Daily Orbit Update

Observers  on 25 March '10

Eleven observing facilities appear in today's MPECs.

CodeObserver / observatory
B03Alter Satzberg Obs. in Austria, 1 in MPEC 2010-F77 -- 2010 FQ
H21Astronomical Research Obs. Westfield (ARO Westfield) in Illinois, 11 in MPEC 2010-F77 -- 2010 FZ9, 2010 FX9, 2010 FW9, 2010 FU, 2010 FT, 2010 FR, 2010 FF7, 2010 EH43, 2010 EF44, 2010 CL18, 2010 CD19
240Herrenberg Obs. in Germany, 1 in MPEC 2010-F77 -- 2001 FZ57
G96Mt. Lemmon Survey in Arizona, 1 in MPEC 2010-F79 -- 2009 XE11
H06|H. Sato in Japan via RAS Obs. Mayhill in New Mexico, 1 in MPEC 2010-F77 -- 2010 FX9
I20Rio Cuarto Obs. in Argentina, 6 in MPEC 2010-F77 -- 2010 FZ9, 2010 EH43, 2010 EF21, 2010 DB34, 2010 CV180, 2010 CM44
204Schiaparelli Obs. in Italy, 1 in MPEC 2010-F77 -- 2010 FV9
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2010-F79 -- 2009 XE11
954Teide Obs. in the Canary Islands, 1 in MPEC 2010-F77 -- 2009 UV18
926Tenagra II Obs. in Arizona, 17 in MPECs 2010-F77 & 2010-F78 -- 2010 FZ9, 2010 FX9, 2010 FU, 2010 FT9, 2010 FT, 2010 FS9, 2010 FF7, 2010 FD7, 2010 FD, 2010 FC, 2010 EV45, 2010 EQ43, 2010 EK43, 2010 EJ43, 2010 EF44, 2010 EB43, 2005 XB1
C51WISE in Earth polar orbit, 3 in MPECs 2010-F77 & 2010-F79 -- 2009 XE11, 2008 AB31, 90367
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 25 March '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.
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 FT9JPL Sentry1452R E M O V E DJPL: Risk listing removed at 0950 UTC.
NEODyS1452R E M O V E D-
2010 FD7JPL Sentry14522070-209931.6e-07-5.31-5.330JPL: "Analysis based on 33 observations spanning 5.0732 days (2010-Mar-19.29153 to 2010-Mar-24.36476)." Diameter approximately 0.130 km. from mean, weighted H=22.1.
NEODyS14522059-207021.08e-07-5.57-5.570NEODyS: "Based on 33 optical observations (of which 0 are rejected as outliers) from 2010/03/19.292 to 2010/03/24.366."
2010 FDJPL Sentry14522085-210423.8e-07-7.15-7.170JPL: "Analysis based on 33 observations spanning 7.9957 days (2010-Mar-16.34477 to 2010-Mar-24.34045)." Diameter approximately 0.021 km. from mean, weighted H=26.0.
NEODyS1452208513.38e-07-7.19-7.190NEODyS: "Based on 34 optical observations (of which 1 are rejected as outliers) from 2010/03/16.346 to 2010/03/24.341."

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 March '10

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

2220Grabbed MPEC 2010-F79 - 2009 XE11 - see above
1452Noted that JPL Sentry has updated its 2010 FD risk assessment - see above
Noted that NEODyS has updated its 2010 FD risk assessment - see above
Noted that JPL Sentry has updated its 2010 FD7 risk assessment - see above
Noted that NEODyS has updated its 2010 FD7 risk assessment - see above
Noted that JPL Sentry has removed 2010 FT9 as an impact risk - see above
Noted that NEODyS has removed 2010 FT9 as an impact risk - see above
Grabbed MPEC 2010-F77 - Daily Orbit Update - see above
Grabbed MPEC 2010-F78 - 2005 XB1 - see above