Contents  on 29 March '09

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 29 March '09

The MPC's NEO Confirmation Page has 10 listings: 2 new, 8 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had two new and eight updated listings. Of these, four were "one nighters."

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 29 March '09

Minor Planet Electronic Circulars

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


<< DOU on 29 Mar. '09 >>  MPEC 2009-F95 - "06:10 UT" - Daily Orbit Update

Observers  on 29 March '09

Eighteen observing facilities appear in today's MPEC.

CodeObserver / observatory
A81Balzaretto Obs. in Italy, 1 in MPEC 2009-F95 -- 2009 FA
703Catalina Sky Survey (CSS) in Arizona, 3 in MPEC 2009-F95 -- 2009 CR2, 2008 UV91, 85990
448Desert Moon Obs. in New Mexico, 6 in MPEC 2009-F95 -- 2009 FE, 2009 EQ2, 2009 DR36, 2009 DQ4, 2009 CQ5, 162080
H26Doc Greiner Research Obs. (DGRO) in Wisconsin, 3 in MPEC 2009-F95 -- 2009 DL1, 2009 DE47, 2008 SV11
J95Great Shefford Obs. in England, 3 in MPEC 2009-F95 -- 2009 FZ10, 2009 FU30, 2009 FP29
379Hamamatsu-Yuto Obs. in Japan, 1 in MPEC 2009-F95 -- 2009 FA
715Jornada Obs. in New Mexico, 1 in MPEC 2009-F95 -- 2009 FW25
J75La Sagra Obs. in Spain, 4 in MPEC 2009-F95 -- 2009 DL1, 35107, 207970, 206910
I36Los Campitos Obs. in Argentina, 1 in MPEC 2009-F95 -- 2009 EC
711McDonald Obs. in Texas, 5 in MPEC 2009-F95 -- 2009 FU23, 2009 FO28, 2009 FF, 2008 YS27, 2001 FE90
G96Mt. Lemmon Survey in Arizona, 1 in MPEC 2009-F95 -- 2008 YR27
J41Raheny Obs. in Ireland, 6 in MPEC 2009-F95 -- 2009 FA, 2007 BT2, 2005 EM30, 208565, 206910, 8566
I20Rio Cuarto Obs. in Argentina, 1 in MPEC 2009-F95 -- 2009 FO28
E12Siding Spring Survey (SSS) in New South Wales, 9 in MPEC 2009-F95 -- 2009 DR36, 2009 DL1, 2008 YR2, 2006 GQ2, 2005 SG19, 1998 FJ74, 144861, 143947, 6053
691Spacewatch 0.9m telescope in Arizona, 4 in MPEC 2009-F95 -- 2009 FG19, 2009 FE, 2003 UN12, 2002 HF8
291Spacewatch 1.8m telescope in Arizona, 10 in MPEC 2009-F95 -- 2009 FZ10, 2009 FV4, 2009 FJ, 2009 FG19, 2009 FG, 2009 FE, 2009 ES, 2009 EH3, 2009 EF3, 136874
6735Jim Young via Table Mtn. Obs. in southern California, 1 in MPEC 2009-F95 -- 2009 CO5
G56Walnut Creek Obs. in northern California, 1 in MPEC 2009-F95 -- 143651
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 29 March '09

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. 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
2009 FU30JPL Sentry1451R E M O V E DJPL #2 for the day: Risk listing removed at 0929 UTC.
2009 FJ30NEODyS14522027-2085174.67e-08-5.81-6.010NEODyS: "Based on 13 optical observations (of which 0 are rejected as outliers) from 2009/03/27.406 to 2009/03/28.349."
JPL Sentry02162024-21071617.1e-07-4.82-5.640JPL: "Analysis based on 13 observations spanning .94377 days (2009-Mar-27.40474 to 2009-Mar-28.34851)." Diameter approximately 0.111 km. from mean, weighted H=22.4.
2009 FG19NEODyS14522022-2087315.83e-08-3.12-3.520NEODyS: "Based on 50 optical observations (of which 0 are rejected as outliers) from 2009/03/21.449 to 2009/03/28.390."
JPL Sentry14512022-2103285.8e-08-3.13-3.540JPL: "Analysis based on 50 observations spanning 6.9411 days (2009-Mar-21.44815 to 2009-Mar-28.38925)." Diameter approximately 0.825 km. from mean, weighted H=18.1.
2009 FZ10JPL Sentry1451R E M O V E DJPL: Risk listing removed at 0852 UTC.
2009 FJNEODyS14522058-208864.38e-05-4.38-4.400NEODyS: "Based on 111 optical observations (of which 7 are rejected as outliers) from 2009/03/17.245 to 2009/03/28.280."
JPL Sentry14512058-2107114.5e-05-4.37-4.400JPL: "Analysis based on 104 observations spanning 10.970 days (2009-Mar-17.30916 to 2009-Mar-28.27925)." Diameter approximately 0.036 km. from mean, weighted H=24.9.
2009 FGNEODyS14522049-2090234.46e-06-5.78-6.190NEODyS: "Based on 56 optical observations (of which 0 are rejected as outliers) from 2009/03/16.399 to 2009/03/28.215."
JPL Sentry14512022-2103235.1e-06-5.71-6.180JPL: "Analysis based on 56 observations spanning 11.816 days (2009-Mar-16.3986 to 2009-Mar-28.2144)." Diameter approximately 0.027 km. from mean, weighted H=25.5.
2009 FENEODyS1452204414.46e-06-3.51-3.510NEODyS: "Based on 62 optical observations (of which 0 are rejected as outliers) from 2009/03/16.280 to 2009/03/28.492."
JPL Sentry14512044-210124.2e-06-3.53-3.530JPL: "Analysis based on 62 observations spanning 12.212 days (2009-Mar-16.27919 to 2009-Mar-28.49161)." Diameter approximately 0.180 km. from mean, weighted H=21.3.

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 29 March '09

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

1452Noted that NEODyS has updated its 2009 FE risk assessment - see above
Noted that NEODyS has updated its 2009 FG risk assessment - see above
Noted that NEODyS has updated its 2009 FG19 risk assessment - see above
Noted that NEODyS has updated its 2009 FJ risk assessment - see above
1451Noted that JPL Sentry has updated its 2009 FE risk assessment - see above
Noted that JPL Sentry has updated its 2009 FG risk assessment - see above
Noted that JPL Sentry has updated its 2009 FG19 risk assessment - see above
Noted that JPL Sentry has updated its 2009 FJ risk assessment - see above
Noted that NEODyS has posted 2009 FJ30 as an impact risk - see above
Noted that JPL Sentry has removed 2009 FU30 as an impact risk - see above
Noted that JPL Sentry has removed 2009 FZ10 as an impact risk - see above
Grabbed MPEC 2009-F95 - Daily Orbit Update - see above
0216Noted that JPL Sentry has posted 2009 FJ30 as an impact risk - see above
0110Noted that JPL Sentry has posted 2009 FU30 as an impact risk - see above