Contents  on 7 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 7 March '09

The MPC's NEO Confirmation Page has 1 listing: 1 updated

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had one updated listing. This was a "one nighter." So far The Tracking News has counted a total of four 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 7 March '09

Minor Planet Electronic Circulars

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


MPEC 2009-E47 - "19:56 UT" - 2009 EP2


MPEC 2009-E46 - "16:07 UT" - 2009 EO2


MPEC 2009-E45 - "16:05 UT" - 2009 EN2


MPEC 2009-E44 - "15:00 UT" - Observations of Comets


MPEC 2009-E43 - "14:48 UT" - Comet C/2009 B2 (LINEAR)


<< DOU on 7 Mar. '09 >>  MPEC 2009-E42 - "07:11 UT" - Daily Orbit Update

Observers  on 7 March '09

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

CodeObserver / observatory
834AAAA Buenos Aires Obs. in Argentina, 1 in MPEC 2009-E44 -- C/2007 Q3
J97Alginet Obs. in Spain, 3 in MPEC 2009-E44 -- C/2006 OF2, 144P, 29P
J24Altamira Obs. in Spain, 19 in MPEC 2009-E44 -- P/2008 WZ96, C/2008 T2, C/2008 A1, C/2007 Q3, C/2006 Q1, C/2006 OF2, 214P, 210P, 144P, 116P, 77P, 74P, 67P, 65P, 59P, 29P, 22P, 19P, 17P
467Auckland Obs. in New Zealand, 7 in MPEC 2009-E44 -- C/2007 Q3, C/2007 N3, C/2007 M2, C/2007 G1, 116P, 74P, 29P
4131Rob McNaught via Australian Natl. Univ. 1m telescope in New South Wales, 1 in MPEC 2009-E42 -- 2008 GG2
B87Banyoles Obs. in Spain, 2 in MPEC 2009-E44 -- C/2006 OF2, 116P
I32Beta Orionis Obs. in Argentina, 1 in MPEC 2009-E44 -- C/2007 N3
B59Borken Obs. in Germany, 4 in MPEC 2009-E44 -- C/2007 N3, 116P, 77P, 29P
J96Cantabria Obs. in Spain, 2 in MPEC 2009-E44 -- 33P, 29P
703Catalina Sky Survey (CSS) in Arizona, 11 in MPECs 2009-E42, 2009-E44 & 2009-E45 -- 2009 EN2, C/2007 T5, C/2007 S2, 2003 WX25, 85990, 10302, 8176, 7480, 1863, 77P, 10P
A77Chante-Perdrix Obs. in France, 4 in MPEC 2009-E44 -- C/2008 A1, C/2007 N3, 144P, 29P
850Cordell-Lorenz Obs. in Tennessee, 1 in MPEC 2009-E44 -- C/2007 N3
808El Leoncito Obs. in Argentina, 1 in MPEC 2009-E44 -- C/2006 K4
E85Farm Cove Obs. in New Zealand, 1 in MPEC 2009-E44 -- 214P
J95Great Shefford Obs. in England, 4 in MPECs 2009-E42 & 2009-E45 -- 2009 EW, 2009 EN2, 2009 EF1, 2009 EA
H51Greiner Research Obs. in Wisconsin, 1 in MPEC 2009-E42 -- 2007 FD3
E16Grove Creek Obs. in New South Wales, 2 in MPECs 2009-E42 & 2009-E44 -- 2009 DQ4, C/2007 Q3
442Gualba Obs. in Spain, 2 in MPEC 2009-E44 -- C/2007 N3, 29P
J39Ingenio Obs. in the Canary Islands, 3 in MPEC 2009-E44 -- C/2006 OF2, 144P, 29P
987Isle of Man Obs. on the Isle of Man, 10 in MPEC 2009-E44 -- C/2007 N3, C/2006 Q1, C/2005 L3, 144P, 116P, 77P, 74P, 65P, 59P, 29P
D32JiangNanTianChi Obs. in China, 1 in MPEC 2009-E44 -- C/2007 N3
415Kambah Obs. in the Australian Capital Territory, 3 in MPEC 2009-E44 -- C/2007 M2, C/2007 G1, C/2006 K4
6951Marc W. Buie via Kitt Peak Natl. Obs. in Arizona, 1 in MPEC 2009-E42 -- 2009 BC58
704LINEAR in New Mexico, 4 in MPEC 2009-E44 -- P/2008 Y2, C/2008 FK75, 116P, 65P
212La Dehesilla Obs. in Spain, 2 in MPEC 2009-E44 -- C/2008 FK75, C/2007 D1
J38La Vara Obs. in Spain, 9 in MPEC 2009-E44 -- C/2008 T2, C/2007 N3, C/2006 OF2, 144P, 116P, 67P, 65P, 29P, 17P
J55Los Altos de Arguineguin Obs. in the Canary Islands, 1 in MPEC 2009-E44 -- C/2006 OF2
844Los Molinos Obs. in Uruguay, 1 in MPEC 2009-E44 -- C/2006 U6
B82Maidbronn Obs. in Germany, 1 in MPEC 2009-E44 -- C/2008 T2
J40Malaga Obs. in Spain, 1 in MPEC 2009-E44 -- C/2007 N3
232Masquefa Obs. in Spain, 7 in MPEC 2009-E44 -- C/2006 Q1, C/2006 OF2, C/2005 L3, 144P, 116P, 77P, 65P
213Montcabre Obs. in Spain, 7 in MPEC 2009-E44 -- C/2007 N3, 116P, 77P, 65P, 33P, 29P, 19P
945Monte Deva Obs. in Spain, 3 in MPEC 2009-E44 -- C/2008 T2, C/2006 OF2, 144P
900Moriyama Obs. in Japan, 2 in MPEC 2009-E44 -- C/2007 S2, C/2007 N3
474Mt. John Obs. in New Zealand, 10 in MPECs 2009-E43, 2009-E44, 2009-E46 & 2009-E47 -- 2009 EP2, 2009 EO2, C/2009 B2, P/2008 Y3, C/2008 X3, C/2007 Q3, C/2007 M2, C/2007 G1, C/2006 U6, C/2006 K4
G96Mt. Lemmon Survey (MLS) in Arizona, 6 in MPECs 2009-E42, 2009-E44 & 2009-E45 -- 2009 EN2, 2009 DM1, 2006 MY1, 2002 QE47, 201P, 10P
A24New Millennium Obs. in Italy, 17 in MPECs 2009-E42 & 2009-E44 -- C/2006 OF2, 2001 CK32, 89355, 52762, 35107, 22753, 162900, 12711, 101873, 7358, 1864, 144P, 116P, 77P, 74P, 65P, 29P
423North Ryde Obs. in New South Wales, 2 in MPECs 2009-E43 & 2009-E44 -- C/2009 B2, C/2007 G1
B49Paus Obs. in Spain, 3 in MPEC 2009-E44 -- 77P, 33P, 19P
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 4 in MPEC 2009-E44 -- C/2006 Q1, 77P, 65P, 33P
D29Purple Mtn. Obs. XuYi Station in China, 1 in MPEC 2009-E44 -- C/2007 N3
854Sabino Canyon Obs. in Arizona, 2 in MPECs 2009-E45 & 2009-E47 -- 2009 EP2, 2009 EN2
233San Vito Obs. in Italy, 1 in MPEC 2009-E44 -- C/2007 N3
204Schiaparelli Obs. in Italy, 2 in MPEC 2009-E44 -- P/2005 SB216, 201P
E12Siding Spring Survey (SSS) in New South Wales, 10 in MPECs 2009-E42, 2009-E44, 2009-E46 & 2009-E47 -- 2009 EP2, 2009 EO2, P/2008 Y3, C/2008 X3, 2008 EY5, 2007 DK8, C/2006 U6, 16834, 6053, 5604
510Siegen Obs. in Germany, 2 in MPEC 2009-E44 -- C/2007 N3, 144P
B40Skylive Obs. in Italy, 1 in MPEC 2009-E44 -- C/2008 T2
645Sloan Digital Sky Survey (SDSS) in New Mexico, 2 in MPEC 2009-E42 -- 2004 PJ, 2000 BH19
691Spacewatch 0.9m telescope in Arizona, 13 in MPECs 2009-E42 & 2009-E44 -- 2009 BJ81, 2007 VM243, C/2007 D1, 2006 KA40, 2006 GQ2, 2005 GW119, 2002 QE47, 2000 ST20, 2000 GU127, 1994 RC, 22771, 206910, 3551
291Spacewatch 1.8m telescope in Arizona, 4 in MPEC 2009-E42 -- 2009 DM1, 2008 CC175, 2004 PM2, 7753
629Szeged Obs. in Hungary, 7 in MPEC 2009-E44 -- C/2006 OF2, 144P, 116P, 74P, 67P, 65P, 29P
B18Terskol Obs. in Russia, 9 in MPEC 2009-E44 -- C/2006 Q1, C/2006 OF2, C/2005 L3, 210P, 144P, 116P, 67P, 29P, 22P
B89Tiana Obs. in Spain, 1 in MPEC 2009-E44 -- C/2007 N3
H10Tzec Maun Obs. Mayhill in New Mexico, 9 in MPEC 2009-E44 -- P/2008 Y2, C/2008 FK75, C/2007 T5, C/2007 S2, C/2007 D1, P/2005 SB216, 65P, 33P, 19P
H47Vicksburg Obs. in Mississippi, 5 in MPEC 2009-E44 -- C/2006 OF2, 144P, 116P, 74P, 29P
D20Zadko Obs. in Western Australia, 1 in MPEC 2009-E42 -- 206910
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 7 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 EN2JPL Sentry18042022-2106164.1e-09-4.29-4.680JPL: "Analysis based on 19 observations spanning 3.9985 days (2009-Mar-03.52237 to 2009-Mar-07.52091)." Diameter approximately 0.925 km. from mean, weighted H=17.8.
2009 EWJPL Sentry1703207514.9e-07-7.06-7.060JPL: "Analysis based on 53 observations spanning 3.8331 days (2009-Mar-02.29194 to 2009-Mar-06.124991)." Diameter approximately 0.018 km. from mean, weighted H=26.4.
NEODyS16242075-208125.29e-07-7.03-7.050NEODyS: "Based on 53 optical observations (of which 0 are rejected as outliers) from 2009/03/02.293 to 2009/03/06.126."

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 7 March '09

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

2100Grabbed MPEC 2009-E47 - 2009 EP2 - see above
1804Noted that JPL Sentry has posted 2009 EN2 as an impact risk - see above
1703Noted that JPL Sentry has updated its 2009 EW risk assessment - see above
1624Noted that NEODyS has updated its 2009 EW risk assessment - see above
1623Grabbed MPEC 2009-E42 - Daily Orbit Update - see above
Grabbed MPEC 2009-E43 - Comet C/2009 B2 (LINEAR) - see above
Grabbed MPEC 2009-E44 - Observations of Comets - see above
Grabbed MPEC 2009-E45 - 2009 EN2 - see above
Grabbed MPEC 2009-E46 - 2009 EO2 - see above