Contents  on 15 February '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 15 February '09

The MPC's NEO Confirmation Page has 8 listings: 8 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had eight updated listings. Of these, three were "one nighters." So far The Tracking News has counted a total of twelve objects listed 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 15 February '09

Minor Planet Electronic Circulars

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


MPEC 2009-C87 - "14:45 UT" - 2009 CP5


MPEC 2009-C86 - "14:43 UT" - 2009 CO5


MPEC 2009-C85 - "14:40 UT" - 2009 CN5


<< DOU on 15 Feb. '09 >>  MPEC 2009-C84 - "07:06 UT" - Daily Orbit Update

Observers  on 15 February '09

A total of 30 observing facilities appear in today's MPECs.

CodeObserver / observatory
H55Astronomical Research Obs. (ARO) in Illinois, 4 in MPECs 2009-C84 & 2009-C85 -- 2009 CZ2, 2009 CN5, 2009 BD81, 2009 BB
300Bisei Spaceguard Center in Japan, 1 in MPEC 2009-C87 -- 2009 CP5
493Calar Alto Obs. in Spain, 3 in MPECs 2009-C85, 2009-C86 & 2009-C87 -- 2009 CP5, 2009 CO5, 2009 CN5
703Catalina Sky Survey (CSS) in Arizona, 3 in MPECs 2009-C84, 2009-C86 & 2009-C87 -- 2009 CP5, 2009 CO5, 2009 BJ58
106Crni Vrh Obs. in Slovenia, 1 in MPEC 2009-C85 -- 2009 CN5
B84Cyclops Obs. in The Netherlands, 2 in MPEC 2009-C84 -- 2009 CR2, 2006 WZ2
448Desert Moon Obs. in New Mexico, 4 in MPEC 2009-C84 -- 2009 CW1, 2009 CS, 2009 BP58, 2009 BB11
114Engelhardt Obs. Zelenchukskaya Station in Karachay-Cherkessia, 1 in MPEC 2009-C86 -- 2009 CO5
595Farra d'Isonzo Obs. in Italy, 1 in MPEC 2009-C87 -- 2009 CP5
143Gnosca Obs. in Switzerland, 3 in MPECs 2009-C85, 2009-C86 & 2009-C87 -- 2009 CP5, 2009 CO5, 2009 CN5
J95Great Shefford Obs. in England, 1 in MPEC 2009-C85 -- 2009 CN5
379Hamamatsu-Yuto Obs. in Japan, 3 in MPEC 2009-C84 -- 2008 EE5, 2006 WZ2, 2000 BL19
B15Inastars Obs. in Germany, 2 in MPECs 2009-C86 & 2009-C87 -- 2009 CP5, 2009 CO5
704LINEAR in New Mexico, 11 in MPEC 2009-C84 -- 2009 CV, 2009 BL71, 2008 MB5, 2008 EE, 2006 WZ2, 2003 YX1, 52762, 36284, 162900, 141765, 4544
J87La Canada Obs. in Spain, 1 in MPEC 2009-C86 -- 2009 CO5
B33Libbiano Obs. in Italy, 2 in MPECs 2009-C85 & 2009-C87 -- 2009 CP5, 2009 CN5
A06Mataro Obs. in Spain, 2 in MPEC 2009-C84 -- 22753, 4179
G96Mt. Lemmon Survey (MLS) in Arizona, 8 in MPECs 2009-C84, 2009-C86 & 2009-C87 -- 2009 CP5, 2009 CO5, 2001 DR8, 198752, 19764, 154988, 4179, 1980
A53Peschiera del Garda Obs. in Italy, 3 in MPEC 2009-C84 -- 2009 CV, 2008 EE5, 206359
473Remanzacco Obs. in Italy, 2 in MPECs 2009-C86 & 2009-C87 -- 2009 CP5, 2009 CO5
854Sabino Canyon Obs. in Arizona, 3 in MPECs 2009-C85, 2009-C86 & 2009-C87 -- 2009 CP5, 2009 CO5, 2009 CN5
434San Benedetto Po Obs. in Italy, 1 in MPEC 2009-C84 -- 36284
H36Sandlot Obs. in Kansas, 1 in MPEC 2009-C85 -- 2009 CN5
204Schiaparelli Obs. in Italy, 3 in MPECs 2009-C85, 2009-C86 & 2009-C87 -- 2009 CP5, 2009 CO5, 2009 CN5
510Siegen Obs. in Germany, 1 in MPEC 2009-C84 -- 2008 EE5
645Sloan Digital Sky Survey in New Mexico, 1 in MPEC 2009-C84 -- 1999 GL4
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2009-C84 -- 1993 HC
291Spacewatch 1.8m telescope in Arizona, 3 in MPEC 2009-C84 -- 2009 CR4, 2009 BC58, 2001 DR8
611Starkenburg Obs. in Germany, 2 in MPECs 2009-C86 & 2009-C87 -- 2009 CP5, 2009 CO5
A55Vallemare di Borbona Obs. in Italy, 1 in MPEC 2009-C84 -- 1999 AQ10
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 15 February '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 CR2JPL Sentry1605202418.9e-09-3.24-3.240JPL: "Analysis based on 27 observations spanning 10.670 days (2009-Feb-03.30293 to 2009-Feb-13.97331)." Diameter approximately 1.700 km. from mean, weighted H=16.5.
NEODyS1605202411.17e-08-3.17-3.170NEODyS: "Based on 27 optical observations (of which 0 are rejected as outliers) from 2009/02/03.304 to 2009/02/13.974."

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 15 February '09

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

1605Noted that JPL Sentry has updated its 2009 CR2 risk assessment - see above
Noted that NEODyS has updated its 2009 CR2 risk assessment - see above
Grabbed MPEC 2009-C84 - Daily Orbit Update - see above
Grabbed MPEC 2009-C85 - 2009 CN5 - see above
Grabbed MPEC 2009-C86 - 2009 CO5 - see above
Grabbed MPEC 2009-C87 - 2009 CP5 - see above