Contents  on 18 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 18 March '09

The MPC's NEO Confirmation Page has 2 listings: 2 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had two updated listings. Of these, one was a "one nighter." So far The Tracking News has counted a total of ten 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 18 March '09

Minor Planet Electronic Circulars

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


MPEC 2009-F32 - "23:47 UT" - 2009 FJ1


MPEC 2009-F31 - "21:45 UT" - Comets C/2008 E10, 2008 Y16, 2008 Y17, 2009 A6 (SOHO)


MPEC 2009-F30 - "20:48 UT" - Comets C/2009 A3, 2009 A4, 2009 A5 (SOHO)


MPEC 2009-F29 - "19:24 UT" - 2009 FG1


MPEC 2009-F28 - "16:34 UT" - Comet P/2008 CL94 (Lemmon)


MPEC 2009-F27 - "16:02 UT" - 2009 FT


MPEC 2009-F26 - "15:57 UT" - 2009 FS


MPEC 2009-F25 - "15:52 UT" - 2009 FR


MPEC 2009-F24 - "15:49 UT" - 2009 DB15


MPEC 2009-F23 - "15:42 UT" - 2009 FQ


MPEC 2009-F22 - "14:43 UT" - 2007 BS2


<< DOU on 18 Mar. '09 >>  MPEC 2009-F21 - "06:11 UT" - Daily Orbit Update

Observers  on 18 March '09

A total of 38 observing facilities appear in today's MPECs.

CodeObserver / observatory
A50Andrushivka Obs. in the Ukraine, 1 in MPEC 2009-F24 -- 2009 DB15
H55Astronomical Research Obs. (ARO) in Illinois, 17 in MPECs 2009-F21 & 2009-F26 -- 2009 FS, 2009 FG, 2009 FA, 2009 EF3, 2009 DZ42, 2009 DO111, 2009 DN1, 2009 DH39, 2009 CZ2, 2009 CS1, 2009 CQ5, 2009 BO58, 2009 BL2, 2008 YE3, 2008 UV91, 2008 OB9, 2008 EV5
A74Bergen-Enkheim Obs. in Germany, 2 in MPECs 2009-F21 & 2009-F27 -- 2009 FT, 2009 DO111
493Calar Alto Obs. in Spain, 1 in MPEC 2009-F32 -- 2009 FJ1
703Catalina Sky Survey (CSS) in Arizona, 13 in MPECs 2009-F21, 2009-F23, 2009-F24, 2009-F25, 2009-F27, 2009-F29 & 2009-F32 -- 2009 FT, 2009 FR, 2009 FQ, 2009 FJ1, 2009 FH, 2009 FG1, 2009 DB15, 2009 CO5, 2009 BA71, 2008 UV91, 2008 TE157, 2008 RM98, 162080
970Chelmsford Obs. in England, 1 in MPEC 2009-F21 -- 2009 DO111
106Crni Vrh Obs. in Slovenia, 1 in MPEC 2009-F21 -- 153953
448Desert Moon Obs. in New Mexico, 4 in MPEC 2009-F21 -- 2009 ED1, 2009 CZ2, 2006 SV19, 2004 BO41
H26Doc Greiner Research Obs. (DGRO) in Wisconsin, 6 in MPEC 2009-F21 -- 2009 FA, 2009 EZ, 2009 EP2, 2006 WZ2, 2004 EU9, 2002 VY94
595Farra d'Isonzo Obs. in Italy, 3 in MPECs 2009-F21 & 2009-F32 -- 2009 FJ1, 2009 FJ, 2009 FH
143Gnosca Obs. in Switzerland, 1 in MPEC 2009-F32 -- 2009 FJ1
J95Great Shefford Obs. in England, 4 in MPECs 2009-F21, 2009-F23, 2009-F26 & 2009-F32 -- 2009 FS, 2009 FQ, 2009 FJ1, 2009 FH
E16Grove Creek Obs. in New South Wales, 1 in MPEC 2009-F21 -- 2009 DL1
A17Guidestar Obs. in Germany, 6 in MPECs 2009-F21 & 2009-F23 -- 2009 FQ, 2009 FG, 2009 FA, 2009 DO111, 2009 DC43, 162882
240Herrenberg Obs. in Germany, 1 in MPEC 2009-F21 -- 2008 EE
704LINEAR in New Mexico, 10 in MPECs 2009-F21 & 2009-F29 -- 2009 FG1, 2009 EP2, 2009 CZ2, 2006 SD6, 2002 VY94, 85275, 22753, 8567, 6050, 3103
D35Lulin Minor Bodies Tracking (LIMIT) in Taiwan, 2 in MPEC 2009-F21 -- 208023, 207398
H01Magdalena Ridge Obs. (MRO) in New Mexico, 4 in MPECs 2009-F23, 2009-F25, 2009-F26 & 2009-F28 -- 2009 FS, 2009 FR, 2009 FQ, P/2008 CL94
B90Malina River Obs., 1 in MPEC 2009-F21 -- 2008 WL60
B67Mirasteilas Obs. in Switzerland, 1 in MPEC 2009-F21 -- 35396
152Moletai Obs. in Lithuania, 1 in MPEC 2009-F21 -- 2008 OS9
A99Monte Baldo Obs. in Italy, 1 in MPEC 2009-F21 -- 2009 FJ
900Moriyama Obs. in Japan, 3 in MPEC 2009-F21 -- 2009 FJ, 2009 FH, 2009 DO111
G96Mt. Lemmon Survey (MLS) in Arizona, 5 in MPECs 2009-F21, 2009-F23, 2009-F26 & 2009-F28 -- 2009 FS, 2009 FQ, 2009 FH, P/2008 CL94, 2006 FV35
A13Naef Obs. in Switzerland, 7 in MPECs 2009-F21, 2009-F24 & 2009-F27 -- 2009 FT, 2009 EP2, 2009 DV42, 2009 DO111, 2009 DB15, 2009 BD2, 2009 BA71
A32Panker Obs. in Germany, 1 in MPEC 2009-F21 -- 2009 DR3
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 4 in MPEC 2009-F21 -- 2009 DO111, 2009 BL2, 2008 EE, 2007 BT2
D90.Cristovao Jacques in Brazil via RAS Obs. Moorook in South Australia, 2 in MPEC 2009-F21 -- 2009 FJ, 2009 FH
473Remanzacco Obs. in Italy, 1 in MPEC 2009-F21 -- 2009 FP
C494HI1-A instrument (4) aboard STEREO-A in heliocentric orbit leading Earth, 7 in MPECs 2009-F30 & 2009-F31 -- C/2009 A6, C/2009 A5, C/2009 A4, C/2009 A3, C/2008 Y17, C/2008 Y16, C/2008 E10
B04Saint-Barthelemy Obs. in Italy, 3 in MPECs 2009-F23, 2009-F27 & 2009-F32 -- 2009 FT, 2009 FQ, 2009 FJ1
H36Sandlot Obs. in Kansas, 2 in MPECs 2009-F21 & 2009-F26 -- 2009 FS, 2009 DC43
204Schiaparelli Obs. in Italy, 1 in MPEC 2009-F21 -- 2009 DO111
E12Siding Spring Survey (SSS) in New South Wales, 2 in MPEC 2009-F21 -- 2009 DD45, 208617
2492LASCO Coronagraph 2 aboard the Solar & Heliospheric Obs. in Earth-Sun L1 HALO orbit, 1 in MPEC 2009-F30 -- C/2009 A3
2493LASCO Coronagraph 3 (SOHO C3) aboard the Solar & Heliospheric Obs. (SOHO) in Earth-Sun L1 HALO orbit, 3 in MPEC 2009-F30 -- C/2009 A5, C/2009 A4, C/2009 A3
691Spacewatch 0.9m telescope in Arizona, 8 in MPECs 2009-F21 & 2009-F28 -- 2009 EQ2, 2008 EN82, P/2008 CL94, 2006 EV52, 2003 UN12, 2000 ST20, 163760, 152941
291Spacewatch 1.8m telescope in Arizona, 24 in MPECs 2009-F21, 2009-F22, 2009-F23, 2009-F26 & 2009-F27 -- 2009 FT, 2009 FS, 2009 FQ, 2009 FP, 2009 EV, 2009 ES, 2009 EF3, 2009 DZ42, 2009 DT10, 2009 DO111, 2009 DO1, 2009 DC12, 2009 DB12, 2009 DA45, 2009 DA43, 2009 CS, 2008 YS27, 2007 BS2, 2006 JU, 2006 HW57, 2005 AN26, 2004 BE68, 2000 YH4, 2000 CK59
B18Terskol Obs. in Russia, 1 in MPEC 2009-F27 -- 2009 FT
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 18 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 FG1JPL Sentry21182015-2104231.8e-08-3.61-3.860JPL: "Analysis based on 12 observations spanning 1.1636 days (2009-Mar-17.30415 to 2009-Mar-18.46771)." Diameter approximately 0.740 km. from mean, weighted H=18.3.
2009 FSJPL Sentry18162025-209461.6e-06-5.01-5.030JPL: "Analysis based on 27 observations spanning 1.0297 days (2009-Mar-17.25582 to 2009-Mar-18.28557)." Diameter approximately 0.050 km. from mean, weighted H=24.2.
2009 FPJPL Sentry1423209211.3e-10-9.00-9.000JPL: "Analysis based on 17 observations spanning .91976 days (2009-Mar-17.26958 to 2009-Mar-18.18934)." Diameter approximately 0.093 km. from mean, weighted H=22.8.
2009 FJJPL Sentry14232058-2107121.7e-05-4.71-4.760JPL: "Analysis based on 38 observations spanning .70037 days (2009-Mar-17.24376 to 2009-Mar-17.94413)." Diameter approximately 0.039 km. from mean, weighted H=24.7.
NEODyS14232058-208571.7e-05-4.70-4.730NEODyS: "Based on 42 optical observations (of which 4 are rejected as outliers) from 2009/03/17.245 to 2009/03/17.945."
2009 FGJPL Sentry14232042-2106338.3e-06-5.49-6.280JPL: "Analysis based on 35 observations spanning 1.5742 days (2009-Mar-16.3986 to 2009-Mar-17.97284)." Diameter approximately 0.027 km. from mean, weighted H=25.5.
NEODyS14232035-2089355.36e-06-5.63-6.290NEODyS: "Based on 35 optical observations (of which 0 are rejected as outliers) from 2009/03/16.399 to 2009/03/17.974."
2009 FENEODyS14232013-2089151.53e-06-3.33-3.470NEODyS: "Based on 30 optical observations (of which 0 are rejected as outliers) from 2009/03/16.280 to 2009/03/17.408."
2009 EVJPL Sentry1423R E M O V E DJPL: Risk listing removed at 1016 UTC.
NEODyS1423R E M O V E D-
2009 ESJPL Sentry1423R E M O V E DJPL: Risk listing removed at 1056 UTC.
NEODyS1423R E M O V E D-
2009 DO111JPL Sentry14232068-2108138.6e-05-3.36-3.500JPL: "Analysis based on 98 observations spanning 23.681 days (2009-Feb-22.33494 to 2009-Mar-18.01615)." Diameter approximately 0.093 km. from mean, weighted H=22.8.
NEODyS14232068-208951.71e-07-5.91-6.180NEODyS: "Based on 98 optical observations (of which 0 are rejected as outliers) from 2009/02/22.336 to 2009/03/18.017."

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 18 March '09

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

2358Grabbed MPEC 2009-F32 - 2009 FJ1 - see above
2224Grabbed MPEC 2009-F30 - Comets C/2009 A3, 2009 A4, 2009 A5 (SOHO) - see above
Grabbed MPEC 2009-F31 - Comets C/2008 E10, 2008 Y16, 2008 Y17, 2009 A6 (SOHO) - see above
2118Noted that JPL Sentry has posted 2009 FG1 as an impact risk - see above
2003Grabbed MPEC 2009-F29 - 2009 FG1 - see above
1816Noted that JPL Sentry has posted 2009 FS as an impact risk - see above
1709Grabbed MPEC 2009-F24 - 2009 DB15 - see above
Grabbed MPEC 2009-F25 - 2009 FR - see above
Grabbed MPEC 2009-F26 - 2009 FS - see above
Grabbed MPEC 2009-F27 - 2009 FT - see above
Grabbed MPEC 2009-F28 - Comet P/2008 CL94 (Lemmon) - see above
1545Grabbed MPEC 2009-F22 - 2007 BS2 - see above
Grabbed MPEC 2009-F23 - 2009 FQ - see above
1423Noted that JPL Sentry has updated its 2009 DO111 risk assessment - see above
Noted that NEODyS has updated its 2009 DO111 risk assessment - see above
Noted that JPL Sentry has removed 2009 ES as an impact risk - see above
Noted that NEODyS has removed 2009 ES as an impact risk - see above
Noted that JPL Sentry has removed 2009 EV as an impact risk - see above
Noted that NEODyS has removed 2009 EV as an impact risk - see above
Noted that NEODyS has posted 2009 FE as an impact risk - see above
Noted that JPL Sentry has updated its 2009 FG risk assessment - see above
Noted that NEODyS has posted 2009 FG as an impact risk - see above
Noted that JPL Sentry has updated its 2009 FJ risk assessment - see above
Noted that NEODyS has posted 2009 FJ as an impact risk - see above
Noted that JPL Sentry has updated its 2009 FP risk assessment - see above
Grabbed MPEC 2009-F21 - Daily Orbit Update - see above