Contents  on 24 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 24 March '09

The MPC's NEO Confirmation Page has 6 listings: 3 new, 3 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had three new and three updated listings. All of these were "one nighters." So far The Tracking News has counted a total of fifteen 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 by Birtwhistle et al. at Suno Observatory.

New MPECs  on 24 March '09

Minor Planet Electronic Circulars

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


MPEC 2009-F73 - "20:22 UT" - 2009 FL25


MPEC 2009-F72 - "14:55 UT" - 2009 FW23


MPEC 2009-F71 - "14:18 UT" - 2009 FV23


MPEC 2009-F70 - "14:14 UT" - 2009 FU23


MPEC 2009-F69 - "14:08 UT" - 2009 FT23


MPEC 2009-F68 - "14:03 UT" - 2009 FS23


<< DOU on 24 Mar. '09 >>  MPEC 2009-F67 - "06:12 UT" - Daily Orbit Update

Observers  on 24 March '09

A total of 26 observing facilities appear in today's MPECs.

CodeObserver / observatory
H55Astronomical Research Obs. (ARO) in Illinois, 9 in MPEC 2009-F67 -- 2009 FX4, 2009 FT, 2009 FJ, 2009 FG1, 2009 FE, 2009 FD, 2009 FA5, 2009 DV42, 2009 BE81
A81Balzaretto Obs. in Italy, 1 in MPEC 2009-F67 -- 2009 FD
432Boambee Obs. in New South Wales, 2 in MPEC 2009-F67 -- 3199, 1036
703Catalina Sky Survey (CSS) in Arizona, 10 in MPECs 2009-F67, 2009-F70, 2009-F71 & 2009-F73 -- 2009 FV23, 2009 FU23, 2009 FL25, 2009 BP58, 2008 WL60, 2001 FZ57, 2000 FL1, 137925, 8176, 3554
J65Celbridge Obs. in Ireland, 1 in MPEC 2009-F70 -- 2009 FU23
H26Doc Greiner Research Obs. (DGRO) in Wisconsin, 2 in MPEC 2009-F67 -- 2009 FD, 2009 FA
808El Leoncito Obs. in Argentina, 1 in MPEC 2009-F72 -- 2009 FW23
595Farra d'Isonzo Obs. in Italy, 2 in MPECs 2009-F70 & 2009-F73 -- 2009 FU23, 2009 FL25
157Frasso Sabino Obs. in Italy, 3 in MPEC 2009-F67 -- 2009 FD, 2007 BT2, 22771
143Gnosca Obs. in Switzerland, 1 in MPEC 2009-F67 -- 1999 FJ21
J95Great Shefford Obs. in England, 3 in MPECs 2009-F68, 2009-F69 & 2009-F70 -- 2009 FU23, 2009 FT23, 2009 FS23
E16Grove Creek Obs. in New South Wales, 1 in MPEC 2009-F72 -- 2009 FW23
704LINEAR in New Mexico, 7 in MPECs 2009-F67, 2009-F68 & 2009-F69 -- 2009 FT23, 2009 FS23, 2009 FD, 2009 EC1, 2009 DF1, 207970, 141432
J75La Sagra Obs. in Spain, 2 in MPEC 2009-F67 -- 99935, 155336
A99Monte Baldo Obs. in Italy, 2 in MPECs 2009-F67 & 2009-F73 -- 2009 FL25, 1999 FJ21
474Mt. John Obs. in New Zealand, 1 in MPEC 2009-F72 -- 2009 FW23
G96Mt. Lemmon Survey in Arizona, 1 in MPEC 2009-F67 -- 2009 FU4
A24New Millennium Obs. in Italy, 1 in MPEC 2009-F70 -- 2009 FU23
D90.Cristovao Jacques in Brazil via RAS Obs. Moorook in South Australia, 1 in MPEC 2009-F72 -- 2009 FW23
J41Raheny Obs. in Ireland, 2 in MPECs 2009-F69 & 2009-F70 -- 2009 FU23, 2009 FT23
619Sabadell Obs. in Spain, 1 in MPEC 2009-F67 -- 143651
854Sabino Canyon Obs. in Arizona, 5 in MPECs 2009-F68, 2009-F69, 2009-F70, 2009-F71 & 2009-F72 -- 2009 FW23, 2009 FV23, 2009 FU23, 2009 FT23, 2009 FS23
204Schiaparelli Obs. in Italy, 2 in MPEC 2009-F67 -- 2009 FL, 2009 FJ
E12Siding Spring Survey in New South Wales, 1 in MPEC 2009-F72 -- 2009 FW23
691Spacewatch 0.9m telescope in Arizona, 4 in MPEC 2009-F67 -- 2008 EN82, 2004 SV26, 40329, 163760
6735Jim Young via Table Mtn. Obs. in southern California, 6 in MPECs 2009-F68, 2009-F69, 2009-F70, 2009-F71, 2009-F72 & 2009-F73 -- 2009 FW23, 2009 FV23, 2009 FU23, 2009 FT23, 2009 FS23, 2009 FL25
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 24 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 FG19NEODyS13552009-20901037.62e-08-2.89-3.750NEODyS: "Based on 35 optical observations (of which 0 are rejected as outliers) from 2009/03/21.449 to 2009/03/23.315."
JPL Sentry03302018-2108658.6e-08-3.00-3.620JPL: "Analysis based on 35 observations spanning 1.8657 days (2009-Mar-21.44815 to 2009-Mar-23.31385)." Diameter approximately 0.827 km. from mean, weighted H=18.1.
2009 FZ10JPL Sentry0330210823.7e-09-8.92-8.940JPL: "Analysis based on 31 observations spanning .95054 days (2009-Mar-21.32461 to 2009-Mar-22.27515)." Diameter approximately 0.027 km. from mean, weighted H=25.5.
2009 FV4JPL Sentry0330R E M O V E DJPL: Risk listing removed at 0852 UTC 23 March.
2009 FU4JPL Sentry1355R E M O V E DJPL #2 for the day: Risk listing removed at 0949 UTC.
2009 FS4JPL Sentry0330R E M O V E DJPL: Risk listing removed at 0851 UTC 22 March.
2009 FG1JPL Sentry13552038-209441.6e-07-2.82-2.970JPL #2 for the day: "Analysis based on 39 observations spanning 4.9819 days (2009-Mar-17.30415 to 2009-Mar-22.28606)." Diameter approximately 0.740 km. from mean, weighted H=18.3.
NEODyS13552038-207151.71e-07-2.80-2.950NEODyS: "Based on 39 optical observations (of which 0 are rejected as outliers) from 2009/03/17.305 to 2009/03/22.287."
2009 FPJPL Sentry0330R E M O V E DJPL: Risk listing removed at 0852 UTC 22 March.
2009 FJJPL Sentry13552058-210796.3e-05-4.24-4.270JPL #2 for the day: "Analysis based on 98 observations spanning 4.9815 days (2009-Mar-17.30916 to 2009-Mar-22.29062)." Diameter approximately 0.036 km. from mean, weighted H=24.9.
NEODyS13552058-208866.01e-05-4.25-4.270NEODyS: "Based on 105 optical observations (of which 7 are rejected as outliers) from 2009/03/17.245 to 2009/03/22.291."
2009 FGJPL Sentry03302022-2107307.5e-06-5.55-6.250JPL: "Analysis based on 48 observations spanning 4.9675 days (2009-Mar-16.3986 to 2009-Mar-21.36612)." Diameter approximately 0.027 km. from mean, weighted H=25.5.
2009 FEJPL Sentry13552044-210326.0e-06-3.41-3.420JPL #2 for the day: "Analysis based on 46 observations spanning 6.1000 days (2009-Mar-16.27919 to 2009-Mar-22.379154)." Diameter approximately 0.180 km. from mean, weighted H=21.4.
NEODyS1355204415.65e-06-3.43-3.430NEODyS: "Based on 46 optical observations (of which 0 are rejected as outliers) from 2009/03/16.280 to 2009/03/22.380."
2009 DO111JPL Sentry0330R E M O V E DJPL: Risk listing removed at 0657 UTC 21 March.

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 24 March '09

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

2024Grabbed MPEC 2009-F73 - 2009 FL25 - see above
1500Grabbed MPEC 2009-F72 - 2009 FW23 - see above
1430Grabbed MPEC 2009-F68 - 2009 FS23 - see above
Grabbed MPEC 2009-F69 - 2009 FT23 - see above
Grabbed MPEC 2009-F70 - 2009 FU23 - see above
Grabbed MPEC 2009-F71 - 2009 FV23 - see above
1355Noted that JPL Sentry has updated its 2009 FE risk assessment - see above
Noted that NEODyS has updated its 2009 FE risk assessment - see above
Noted that JPL Sentry has updated its 2009 FG1 risk assessment - see above
Noted that NEODyS has updated its 2009 FG1 risk assessment - see above
Noted that NEODyS has posted 2009 FG19 as an impact risk - see above
Noted that JPL Sentry has updated its 2009 FJ risk assessment - see above
Noted that NEODyS has updated its 2009 FJ risk assessment - see above
Noted that JPL Sentry has removed 2009 FU4 as an impact risk - see above
Grabbed MPEC 2009-F67 - Daily Orbit Update - see above
0330Noted that JPL Sentry has removed 2009 DO111 as an impact risk - see above
Noted 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 FG1 risk assessment - see above
Noted that JPL Sentry has reposted 2009 FG19 as an impact risk - see above
Noted that JPL Sentry has updated its 2009 FJ risk assessment - see above
Noted that JPL Sentry has removed 2009 FP as an impact risk - see above
Noted that JPL Sentry has removed 2009 FS4 as an impact risk - see above
Noted that JPL Sentry has updated its 2009 FU4 risk assessment - see above
Noted that JPL Sentry has removed 2009 FV4 as an impact risk - see above
Noted that JPL Sentry has reposted 2009 FZ10 as an impact risk - see above