Contents  on 4 May '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 4 May '09

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

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had one new and two updated listings. All of these were "one nighters." So far The Tracking News has counted a total of seven 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 4 May '09

Minor Planet Electronic Circulars

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


MPEC 2009-J23 - "16:44 UT" - 2009 JS


MPEC 2009-J22 - "16:37 UT" - 2009 JR


MPEC 2009-J21 - "15:40 UT" - Observations of Comets


MPEC 2009-J20 - "15:22 UT" - Comet C/2009 G1 (STEREO)


MPEC 2009-J19 - "15:11 UT" - Comet C/2009 F6 (Yi-SWAN)


MPEC 2009-J18 - "15:00 UT" - Comet C/2009 F5 (McNaught)


MPEC 2009-J17 - "14:55 UT" - Comet C/2009 F4 (McNaught)


MPEC 2009-J16 - "14:33 UT" - Comet C/2009 F2 (McNaught)


<< DOU on 4 May '09 >>  MPEC 2009-J15 - "06:09 UT" - Daily Orbit Update


MPEC 2009-J14 - "03:19 UT" - Comet C/2002 S7 = 2008 N4 = 1996 X3 (SOHO)

Observers  on 4 May '09

A total of 62 observing facilities appear in today's MPECs.

CodeObserver / observatory
349Ageo Obs. in Japan, 11 in MPECs 2009-J17, 2009-J18, 2009-J19, 2009-J20 & 2009-J21 -- C/2009 G1, C/2009 F6, C/2009 F5, C/2009 F4, C/2008 FK75, C/2008 A1, C/2007 Q3, 210P, 209P, 88P, 65P
J51Atlante Obs. in the Canary Islands, 6 in MPECs 2009-J18 & 2009-J21 -- C/2009 F5, C/2008 Q1, C/2005 L3, 116P, 77P, 65P
B87Banyoles Obs. in Spain, 1 in MPEC 2009-J21 -- C/2006 Q1
I32Beta Orionis Obs. in Argentina, 1 in MPEC 2009-J16 -- C/2009 F2
B20Carmelita Obs. in Spain, 2 in MPEC 2009-J21 -- C/2005 L3, 65P
B66Casasco Obs. in Italy, 3 in MPECs 2009-J15 & 2009-J21 -- 2009 HV44, C/2008 Q1, C/2006 Q1
160Castelmartini Obs. in Italy, 7 in MPEC 2009-J21 -- C/2007 N3, C/2006 Q1, C/2006 OF2, 144P, 116P, 74P, 65P
703Catalina Sky Survey (CSS) in Arizona, 3 in MPEC 2009-J21 -- P/2008 Y2, C/2008 Q1, C/2006 U6
A77Chante-Perdrix Obs. in France, 6 in MPEC 2009-J21 -- P/2009 F7, C/2006 W3, C/2005 S4, C/2005 L3, 210P, 19P
850Cordell-Lorenz Obs. in Tennessee, 1 in MPEC 2009-J21 -- C/2007 N3
B84Cyclops Obs. in The Netherlands, 1 in MPEC 2009-J21 -- C/2008 A1
H26Doc Greiner Research Obs. in Wisconsin, 1 in MPEC 2009-J15 -- 2009 HV44
I21El Condor Obs. in Argentina, 4 in MPECs 2009-J15 & 2009-J21 -- 2009 DL1, C/2007 Q3, 52768, 4954
J36El Olivo Obs. in Spain, 9 in MPEC 2009-J21 -- C/2008 Q1, C/2008 FK75, C/2007 D1, C/2006 Q1, C/2005 L3, 143P, 88P, 77P, 65P
114Engelhardt Obs. Zelenchukskaya Station in Karachay-Cherkessia, 1 in MPEC 2009-J15 -- 2009 HZ67
E85Farm Cove Obs. in New Zealand, 4 in MPECs 2009-J17, 2009-J18 & 2009-J21 -- P/2009 F7, C/2009 F5, C/2009 F4, C/2008 FK75
J95Great Shefford Obs. in England, 4 in MPECs 2009-J15 & 2009-J23 -- 2009 JS, 2009 JA, 2009 HM82, 2009 HC82
E16Grove Creek Obs. in New South Wales, 8 in MPECs 2009-J15, 2009-J16, 2009-J18, 2009-J21 & 2009-J22 -- 2009 JR, 2009 HD, P/2009 F7, C/2009 F5, C/2009 F2, 2009 DL1, 2009 DE47, C/2007 B2
379Hamamatsu-Yuto Obs. in Japan, 5 in MPEC 2009-J21 -- C/2008 Q1, C/2007 N3, C/2006 Q1, C/2006 OF2, C/2005 L3
024Heidelberg-Konigstuhl Obs. in Germany, 1 in MPEC 2009-J21 -- C/2002 VQ94
D88Hiratsuka Obs. in Japan, 4 in MPEC 2009-J21 -- C/2006 Q1, C/2005 L3, 88P, 77P
987Isle of Man Obs. on the Isle of Man, 3 in MPEC 2009-J21 -- C/2006 Q1, 116P, 65P
J28Jaen Obs. in Spain, 3 in MPECs 2009-J15 & 2009-J21 -- P/2009 F7, C/2006 Q1, 86666
415Kambah Obs. in the Australian Capital Territory, 4 in MPECs 2009-J17 & 2009-J21 -- C/2009 F4, C/2007 B2, 214P, 150P
585Kiev Comet Station in the Ukraine, 5 in MPECs 2009-J17, 2009-J18, 2009-J19 & 2009-J21 -- C/2009 F6, C/2009 F5, C/2009 F4, 88P, 77P
704LINEAR in New Mexico, 9 in MPECs 2009-J15, 2009-J18, 2009-J21, 2009-J22 & 2009-J23 -- 2009 JS, 2009 JR, C/2009 F5, 2008 WN2, C/2006 U6, C/2002 VQ94, 143947, 138911, 3988
J31La Axarquia Obs. in Spain, 2 in MPEC 2009-J21 -- 144P, 88P
212La Dehesilla Obs. in Spain, 6 in MPEC 2009-J21 -- P/2009 F7, C/2008 T2, C/2008 Q1, C/2008 FK75, 210P, 19P
J38La Vara Obs. in Spain, 8 in MPECs 2009-J17 & 2009-J21 -- C/2009 F4, C/2008 T2, C/2007 N3, C/2006 Q1, C/2006 OF2, C/2005 L3, 67P, 29P
J59Linceo Obs. in Spain, 4 in MPECs 2009-J18 & 2009-J21 -- C/2009 F5, 88P, 77P, 65P
B82Maidbronn Obs. in Germany, 1 in MPEC 2009-J21 -- 19P
J40Malaga Obs. in Spain, 2 in MPEC 2009-J21 -- C/2006 Q1, C/2005 L3
232Masquefa Obs. in Spain, 7 in MPEC 2009-J21 -- C/2006 Q1, C/2006 OF2, C/2005 L3, 88P, 77P, 65P, 29P
B67Mirasteilas Obs. in Switzerland, 1 in MPEC 2009-J15 -- 86666
152Moletai Obs. in Lithuania, 3 in MPEC 2009-J21 -- C/2008 T2, C/2007 N3, 29P
213Montcabre Obs. in Spain, 4 in MPEC 2009-J21 -- C/2007 N3, C/2005 L3, 77P, 65P
900Moriyama Obs. in Japan, 12 in MPECs 2009-J17, 2009-J18, 2009-J19, 2009-J20 & 2009-J21 -- C/2009 G1, C/2009 F6, C/2009 F5, C/2009 F4, C/2008 Q1, C/2008 A1, C/2007 D1, C/2006 W3, C/2006 U6, C/2006 Q1, 209P, 19P
474Mt. John Obs. in New Zealand, 9 in MPECs 2009-J15, 2009-J16 & 2009-J17 -- 2009 JA, 2009 HM82, 2009 HG, 2009 HC21, C/2009 F4, C/2009 F2, 2005 MR5, 2005 MO13, 2005 MC
G96Mt. Lemmon Survey (MLS) in Arizona, 2 in MPEC 2009-J21 -- 210P, 77P
J93Mt. Tuffley Obs. in England, 2 in MPEC 2009-J21 -- C/2006 Q1, 116P
J47Nazaret Obs. in Spain, 17 in MPEC 2009-J21 -- P/2009 F7, C/2008 T2, C/2008 FK75, C/2007 N3, C/2006 U6, C/2006 OF2, C/2005 L3, 210P, 144P, 143P, 116P, 88P, 77P, 67P, 65P, 29P, 19P
423North Ryde Obs. in New South Wales, 1 in MPEC 2009-J16 -- C/2009 F2
D92Osaki Obs. in Japan, 1 in MPEC 2009-J21 -- 77P
A32Panker Obs. in Germany, 4 in MPECs 2009-J19 & 2009-J21 -- C/2009 F6, C/2007 N3, C/2005 L3, 144P
B49Paus Obs. in Spain, 4 in MPEC 2009-J21 -- C/2008 Q1, C/2008 FK75, C/2005 S4, C/2005 L3
J53Posadas Obs. in Spain, 12 in MPECs 2009-J15, 2009-J18 & 2009-J21 -- C/2009 F5, C/2008 Q1, C/2008 FK75, C/2007 N3, 2007 BT2, C/2006 U6, C/2006 Q1, C/2005 L3, 207945, 155334, 88P, 77P
H06%Ernesto Guido in Italy via RAS Obs. Mayhill in New Mexico, 1 in MPEC 2009-J22 -- 2009 JR
D90RAS Obs. Moorook in South Australia, 1 in MPEC 2009-J20 -- C/2009 G1
473Remanzacco Obs. in Italy, 2 in MPECs 2009-J18 & 2009-J21 -- C/2009 F5, C/2005 L3
939Rodeno Obs. in Spain, 10 in MPEC 2009-J21 -- C/2008 T2, C/2008 Q1, C/2008 FK75, C/2007 N3, C/2006 Q1, C/2005 L3, 88P, 77P, 67P, 65P
B70Sant Celoni Obs. in Spain, 2 in MPECs 2009-J18 & 2009-J21 -- C/2009 F5, C/2005 L3
B74Santa Maria de Montmagastrell Obs. in Spain, 14 in MPEC 2009-J21 -- C/2008 T2, C/2008 Q1, C/2007 N3, C/2006 U6, C/2006 Q1, C/2006 OF2, C/2005 L3, 116P, 88P, 77P, 74P, 67P, 65P, 29P
204Schiaparelli Obs. in Italy, 3 in MPEC 2009-J21 -- P/2009 F7, C/2008 FK75, C/2007 D1
D93Sendai Obs. in Japan, 11 in MPEC 2009-J21 -- C/2008 T2, C/2008 Q1, C/2008 FK75, C/2007 N3, C/2006 W3, C/2006 OF2, C/2005 L3, 144P, 116P, 88P, 65P
E12Siding Spring Survey (SSS) in New South Wales, 6 in MPECs 2009-J15 & 2009-J21 -- 2009 HB82, 2008 RG98, 136617, 3552, 172P, 150P
B40Skylive Obs. in Italy, 1 in MPEC 2009-J21 -- C/2006 Q1
291Spacewatch 1.8m telescope in Arizona, 10 in MPECs 2009-J15 & 2009-J21 -- 2009 HY51, 2009 HX51, 2009 HV58, 2009 HF88, 2009 HF82, 2009 HD82, 2009 HC21, 2009 HC, P/2008 Y2, 2006 UC63
A97Stammersdorf Obs. in Austria, 3 in MPEC 2009-J21 -- C/2006 Q1, C/2005 L3, 77P
H10Tzec Maun Obs. Mayhill in New Mexico, 5 in MPEC 2009-J21 -- C/2008 FK75, C/2007 D1, C/2006 Q1, C/2005 L3, 116P
B42Vitebsk Obs. in Belarus, 2 in MPEC 2009-J21 -- 116P, 77P
I13Washington D.C. Obs. in Washington, D.C., 1 in MPEC 2009-J21 -- 116P
367Yatsuka Obs. in Japan, 8 in MPECs 2009-J18, 2009-J19 & 2009-J21 -- C/2009 F6, C/2009 F5, C/2007 Q3, C/2006 W3, 143P, 116P, 77P, 65P
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 4 May '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 HF82JPL Sentry1312R E M O V E DJPL: Risk listing removed at 0854 UTC.
NEODyS1312R E M O V E D-
2009 HC82JPL Sentry13122012-2109315.0e-08-1.14-1.170JPL: "Analysis based on 23 observations spanning 4.6749 days (2009-Apr-29.37373 to 2009-May-04.04865)." Diameter approximately 1.900 km. from mean, weighted H=16.2.
NEODyS13122012-2090525.74e-08-1.18-1.230NEODyS: "Based on 24 optical observations (of which 1 are rejected as outliers) from 2009/04/29.374 to 2009/05/04.049."
2009 HV58JPL Sentry13122011-2105131.0e-07-2.84-2.850JPL: "Analysis based on 31 observations spanning 7.9301 days (2009-Apr-25.39439 to 2009-May-03.32445)." Diameter approximately 0.440 km. from mean, weighted H=19.4.
NEODyS13122011-2090111.03e-07-2.75-2.760NEODyS: "Based on 31 optical observations (of which 0 are rejected as outliers) from 2009/04/25.395 to 2009/05/03.325."
2009 HCJPL Sentry13122095-209861.6e-06-6.19-6.800JPL: "Analysis based on 108 observations spanning 16.043 days (2009-Apr-17.23164 to 2009-May-03.27432)." Diameter approximately 0.036 km. from mean, weighted H=24.9.

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 4 May '09

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

1700Grabbed MPEC 2009-J22 - 2009 JR - see above
Grabbed MPEC 2009-J23 - 2009 JS - see above
1604Grabbed MPEC 2009-J21 - Observations of Comets - see above
1534Grabbed MPEC 2009-J18 - Comet C/2009 F5 (McNaught) - see above
Grabbed MPEC 2009-J19 - Comet C/2009 F6 (Yi-SWAN) - see above
Grabbed MPEC 2009-J20 - Comet C/2009 G1 (STEREO) - see above
1500Grabbed MPEC 2009-J16 - Comet C/2009 F2 (McNaught) - see above
Grabbed MPEC 2009-J17 - Comet C/2009 F4 (McNaught) - see above
1312Noted that JPL Sentry has updated its 2009 HC risk assessment - see above
Noted that JPL Sentry has posted 2009 HC82 as an impact risk - see above
Noted that NEODyS has posted 2009 HC82 as an impact risk - see above
Noted that JPL Sentry has removed 2009 HF82 as an impact risk - see above
Noted that NEODyS has removed 2009 HF82 as an impact risk - see above
Noted that JPL Sentry has updated its 2009 HV58 risk assessment - see above
Noted that NEODyS has updated its 2009 HV58 risk assessment - see above
Grabbed MPEC 2009-J15 - Daily Orbit Update - see above
0414Grabbed MPEC 2009-J14 - Comet C/2002 S7 = 2008 N4 = 1996 X3 (SOHO) - see above