Contents  on 31 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.

Radar Astrometry  on 31 March '09

Radar observation of one object

The JPL Solar System Dynamics Group Radar Astrometry database has added or updated the following small-body radar observing work:


Data update noted at 2009 UTC when the database was dated 31 March

NEOCP Activity  on 31 March '09

The MPC's NEO Confirmation Page has 4 listings: 4 updated

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had four updated listings. Of these, one was a "one nighter." So far The Tracking News has counted a total of eight listings on the NEOCP at some point today.

New MPECs  on 31 March '09

Minor Planet Electronic Circulars

As of last check at 2359 UTC, there have been ten MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2009-F113 - "19:46 UT" - Comet C/2009 F5 (McNaught)


MPEC 2009-F112 - "19:37 UT" - 2005 EJ94


MPEC 2009-F111 - "19:35 UT" - Comet C/2009 F4 (McNaught)


MPEC 2009-F110 - "19:31 UT" - Comet C/2009 F2 (McNaught)


MPEC 2009-F109 - "19:28 UT" - Comet C/2009 F1 (Larson)


MPEC 2009-F108 - "19:24 UT" - Comet C/2009 E1 (Itagaki)


MPEC 2009-F107 - "19:20 UT" - Comet C/2009 B2 (LINEAR)


MPEC 2009-F106 - "14:43 UT" - 2004 HC2


MPEC 2009-F105 - "14:01 UT" - Observations of Comets


<< DOU on 31 Mar. '09 >>  MPEC 2009-F104 - "06:12 UT" - Daily Orbit Update

Observers  on 31 March '09

A total of 56 observing facilities appear in today's MPECs.

CodeObserver / observatory
349Ageo Obs. in Japan, 8 in MPECs 2009-F105, 2009-F108, 2009-F111 & 2009-F113 -- C/2009 F5, C/2009 F4, P/2009 F3, C/2009 E1, C/2006 OF2, 144P, 88P, 74P
H55Astronomical Research Obs. (ARO) in Illinois, 4 in MPEC 2009-F104 -- 2009 FW25, 2009 FN32, 2009 DD1, 2009 CQ1
467Auckland Obs. in New Zealand, 10 in MPECs 2009-F105 & 2009-F113 -- C/2009 F5, C/2007 Q3, C/2007 N3, C/2007 G1, C/2007 B2, C/2006 Q1, 116P, 77P, 65P, 22P
344Bohyunsan Obs. in South Korea, 1 in MPEC 2009-F105 -- 17P
215Buchloe Obs. in Germany, 1 in MPEC 2009-F105 -- 195P
J96Cantabria Obs. in Spain, 4 in MPEC 2009-F105 -- C/2008 T2, C/2007 N3, C/2006 OF2, 29P
B20Carmelita Obs. in Spain, 6 in MPEC 2009-F105 -- C/2008 T2, C/2007 N3, C/2006 OF2, 144P, 116P, 29P
703Catalina Sky Survey (CSS) in Arizona, 12 in MPECs 2009-F104, 2009-F105, 2009-F106, 2009-F107 & 2009-F112 -- C/2009 B2, 2008 SV11, C/2006 U6, C/2006 Q1, 2005 YS165, 2005 EJ94, 2004 HC2, 89355, 184990, 14402, 143651, 8176
A77Chante-Perdrix Obs. in France, 1 in MPEC 2009-F105 -- C/2008 T2
850Cordell-Lorenz Obs. in Tennessee, 2 in MPECs 2009-F105 & 2009-F108 -- C/2009 E1, C/2007 N3
114Engelhardt Obs. Zelenchukskaya Station in Karachay-Cherkessia, 1 in MPEC 2009-F109 -- C/2009 F1
E85Farm Cove Obs. in New Zealand, 1 in MPEC 2009-F111 -- C/2009 F4
203GiaGa Obs. in Italy, 2 in MPEC 2009-F105 -- 77P, 65P
253Goldstone DSS-14 70m antenna in southern California, 1 in radar -- 2008 SV11
683Goodricke-Pigott Obs. in Arizona, 1 in MPEC 2009-F105 -- 210P
J95Great Shefford Obs. in England, 2 in MPEC 2009-F104 -- 2009 FS, 2008 SV11
E16Grove Creek Obs. in New South Wales, 2 in MPEC 2009-F105 -- C/2007 Q3, C/2007 G1
442Gualba Obs. in Spain, 3 in MPEC 2009-F105 -- C/2007 N3, 144P, 29P
A17Guidestar Obs. in Germany, 2 in MPEC 2009-F104 -- 2009 FT, 2009 FG1
379Hamamatsu-Yuto Obs. in Japan, 11 in MPECs 2009-F104, 2009-F105 & 2009-F107 -- 2009 FA, 2009 DL1, C/2009 B2, 2008 WL60, C/2007 N3, 2007 BT2, C/2006 Q1, C/2006 OF2, 2006 GQ2, C/2005 L3, 2004 VC
D88Hiratsuka Obs. in Japan, 5 in MPEC 2009-F105 -- C/2008 T2, C/2007 Q3, C/2007 N3, C/2006 OF2, 144P
048Hradec Kralove Obs. in the Czech Republic, 2 in MPEC 2009-F105 -- C/2007 N3, 77P
J39Ingenio Obs. in the Canary Islands, 5 in MPEC 2009-F105 -- C/2008 T2, C/2007 N3, C/2006 OF2, 144P, 116P
D32JiangNanTianChi Obs. in China, 2 in MPEC 2009-F105 -- C/2008 T2, C/2007 N3
415Kambah Obs. in the Australian Capital Territory, 1 in MPEC 2009-F105 -- C/2007 B2
585Kiev Comet Station in the Ukraine, 3 in MPECs 2009-F105, 2009-F107 & 2009-F109 -- C/2009 F1, C/2009 B2, C/2007 N3
704LINEAR in New Mexico, 12 in MPECs 2009-F104 & 2009-F105 -- 2009 DL1, P/2008 Y2, C/2008 E1, C/2007 N3, C/2006 U6, 2006 GQ2, 2005 SG19, 5604, 1036, 211P, 144P, 143P
J38La Vara Obs. in Spain, 10 in MPEC 2009-F105 -- C/2008 T2, C/2007 N3, C/2006 Q1, C/2006 OF2, C/2005 L3, 144P, 77P, 74P, 67P, 29P
I36Los Campitos Obs. in Argentina, 5 in MPECs 2009-F105, 2009-F110 & 2009-F113 -- C/2009 F5, C/2009 F2, C/2007 G1, 65P, 22P
130Lumezzane Obs. in Italy, 1 in MPEC 2009-F105 -- 201P
B82Maidbronn Obs. in Germany, 6 in MPEC 2009-F105 -- C/2008 T2, C/2006 OF2, C/2005 L3, 144P, 74P, 29P
J40Malaga Obs. in Spain, 4 in MPEC 2009-F105 -- C/2006 Q1, 144P, 29P, 19P
213Montcabre Obs. in Spain, 4 in MPEC 2009-F105 -- C/2007 N3, C/2005 L3, 144P, 29P
945Monte Deva Obs. in Spain, 7 in MPEC 2009-F105 -- C/2008 T2, C/2007 N3, C/2006 Q1, C/2006 OF2, C/2005 L3, 116P, 65P
900Moriyama Obs. in Japan, 1 in MPEC 2009-F105 -- C/2008 E1
474Mt. John Obs. in New Zealand, 1 in MPEC 2009-F112 -- 2005 EJ94
G96Mt. Lemmon Survey (MLS) in Arizona, 7 in MPECs 2009-F104, 2009-F105, 2009-F106 & 2009-F109 -- C/2009 F1, 2009 CA2, P/2009 B1, 2008 SW150, 2004 HC2, 138883, 210P
J93Mt. Tuffley Obs. in England, 3 in MPECs 2009-F104 & 2009-F105 -- C/2008 T2, 1036, 144P
J47Nazaret Obs. in Spain, 8 in MPEC 2009-F105 -- C/2007 N3, C/2005 L3, 116P, 74P, 67P, 65P, 29P, 17P
423North Ryde Obs. in New South Wales, 4 in MPECs 2009-F105, 2009-F110, 2009-F111 & 2009-F113 -- C/2009 F5, C/2009 F4, C/2009 F2, C/2007 G1
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 11 in MPECs 2009-F104, 2009-F105 & 2009-F107 -- 2009 FO28, 2009 FA, C/2009 B2, P/2008 Y2, C/2007 N3, C/2006 OF2, 144P, 143P, 116P, 74P, 29P
H06RAS Obs. Mayhill in New Mexico, 1 in MPEC 2009-F105 -- P/2009 F3
I20Rio Cuarto Obs. in Argentina, 2 in MPECs 2009-F110 & 2009-F113 -- C/2009 F5, C/2009 F2
854Sabino Canyon Obs. in Arizona, 1 in MPEC 2009-F112 -- 2005 EJ94
B74Santa Maria de Montmagastrell Obs. in Spain, 5 in MPECs 2009-F105 & 2009-F108 -- C/2009 E1, C/2008 T2, C/2007 Q3, C/2007 N3, 67P
204Schiaparelli Obs. in Italy, 7 in MPEC 2009-F105 -- P/2009 B1, P/2008 Y2, C/2007 N3, 211P, 188P, 143P, 19P
E12Siding Spring Survey (SSS) in New South Wales, 4 in MPEC 2009-F104 -- 2009 FP28, 2009 FO32, 2009 EO2, 136617
510Siegen Obs. in Germany, 1 in MPEC 2009-F104 -- 2008 SV11
G68Sierra Stars Obs. in northern California, 1 in MPEC 2009-F105 -- 210P
B40Skylive Obs. in Italy, 3 in MPEC 2009-F105 -- C/2007 N3, C/2006 OF2, 144P
A20Sogel Obs. in Germany, 1 in MPEC 2009-F104 -- 137925
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2009-F105 -- 88P
291Spacewatch 1.8m telescope in Arizona, 3 in MPECs 2009-F104 & 2009-F105 -- 2009 FF19, 2009 DZ42, 195P
A97Stammersdorf Obs. in Austria, 1 in MPEC 2009-F105 -- C/2007 N3
H53Thompsonville Obs. in Illinois, 2 in MPEC 2009-F105 -- C/2007 N3, C/2006 OF2
B42Vitebsk Obs. in Belarus, 4 in MPEC 2009-F105 -- 210P, 201P, 188P, 19P
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 31 March '09

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2359 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 FP32NEODyS13222073-209082.45e-06-6.99-7.430NEODyS: "Based on 20 optical observations (of which 0 are rejected as outliers) from 2009/03/29.241 to 2009/03/30.317."

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 31 March '09

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

2009Grabbed MPEC 2009-F106 - 2004 HC2 - see above
Grabbed MPEC 2009-F107 - Comet C/2009 B2 (LINEAR) - see above
Grabbed MPEC 2009-F108 - Comet C/2009 E1 (Itagaki) - see above
Grabbed MPEC 2009-F109 - Comet C/2009 F1 (Larson) - see above
Grabbed MPEC 2009-F110 - Comet C/2009 F2 (McNaught) - see above
Grabbed MPEC 2009-F111 - Comet C/2009 F4 (McNaught) - see above
Grabbed MPEC 2009-F112 - 2005 EJ94 - see above
Grabbed MPEC 2009-F113 - Comet C/2009 F5 (McNaught) - see above
Noted Radar Astrometry database update - see above
1436Grabbed MPEC 2009-F105 - Observations of Comets - see above
1322Noted that NEODyS has posted 2009 FP32 as an impact risk - see above
Grabbed MPEC 2009-F104 - Daily Orbit Update - see above