Contents  on 17 November '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 17 November '09

The MPC's NEO Confirmation Page has 10 listings: 4 new, 6 updated

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had four new and six updated listings. All of these were "one nighters." So far The Tracking News has counted a total of seventeen 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 17 November '09

Minor Planet Electronic Circulars

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


MPEC 2009-W15 - "15:54 UT" - 2009 WN


<< DOU on 17 Nov. '09 >>  MPEC 2009-W14 - "07:10 UT" - Daily Orbit Update


MPEC 2009-W13 - "05:47 UT" - 2009 WF


MPEC 2009-W12 - "05:42 UT" - 2009 WE


MPEC 2009-W11 - "05:35 UT" - 2009 WD

Observers  on 17 November '09

A total of 22 observing facilities appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield (ARO Westfield) in Illinois, 3 in MPEC 2009-W14 -- 2009 TL4, 2009 TF10, 2009 SD229
703Catalina Sky Survey (CSS) in Arizona, 14 in MPECs 2009-W13, 2009-W14 & 2009-W15 -- 2009 WN, 2009 WF, 2009 SO103, 2009 NH, 2006 HX5, 2002 TN30, 2002 AF3, 218863, 211871, 177614, 16064, 5693, 5131, 3691
A77Chante-Perdrix Obs. in France, 1 in MPEC 2009-W14 -- 4015
448Desert Moon Obs. in New Mexico, 6 in MPEC 2009-W14 -- 2009 UX17, 2009 US87, 2009 UM3, 2009 UK, 2009 SO103, 2005 QL
J95Great Shefford Obs. in England, 1 in MPEC 2009-W12 -- 2009 WE
442Gualba Obs. in Spain, 1 in MPEC 2009-W14 -- 4015
355Hadano Obs. in Japan, 11 in MPEC 2009-W14 -- 2009 VZ, 2009 ST19, 2009 RN, 2009 NA, 2009 MX6, 2005 MC, 2004 TB18, 2002 NW16, 85818, 30997, 217807
704LINEAR in New Mexico, 17 in MPEC 2009-W14 -- 2009 VS44, 2009 VQ44, 2009 ST103, 2009 ML1, 2006 UR, 2002 UN3, 2000 WK10, 85628, 143678, 138852, 136617, 6239, 5653, 4015, 3988, 3552, 1943
J75La Sagra Obs. in Spain, 3 in MPEC 2009-W14 -- 2009 VW, 2009 UK28, 5653
J131National Schools Obs. via the Liverpool Telescope in the Canary Islands, 1 in MPEC 2009-W14 -- 2001 WW1
H01Magdalena Ridge Obs. (MRO) in New Mexico, 3 in MPECs 2009-W11, 2009-W13 & 2009-W15 -- 2009 WN, 2009 WF, 2009 WD
B67Mirasteilas Obs. in Switzerland, 7 in MPEC 2009-W14 -- 2009 UV18, 2006 AO4, 99248, 85839, 54401, 21088, 16834
G96Mt. Lemmon Survey (MLS) in Arizona, 5 in MPECs 2009-W11, 2009-W12 & 2009-W14 -- 2009 WE, 2009 WD, 2009 VT, 162168, 140158
B49Paus Obs. in Spain, 1 in MPEC 2009-W14 -- 2009 VW
D90`Kevin Hills in England via RAS Obs. Moorook in South Australia, 1 in MPEC 2009-W14 -- 2009 WB
691Spacewatch 0.9m telescope in Arizona, 2 in MPEC 2009-W14 -- 2006 WN1, 5693
291Spacewatch 1.8m telescope in Arizona, 17 in MPECs 2009-W11, 2009-W12 & 2009-W14 -- 2009 WE, 2009 WD, 2009 WB, 2009 VT, 2009 VS25, 2009 VR25, 2009 VO24, 2009 VL24, 2009 VB1, 2009 VA26, 2009 UQ5, 2009 UF2, 2009 SD229, 2009 SB100, 2009 RV1, 2005 WY55, 2002 PC130
6735Jim Young via Table Mtn. Obs. in southern California, 1 in MPEC 2009-W15 -- 2009 WN
926Tenagra II Obs. in Arizona, 5 in MPECs 2009-W11, 2009-W12, 2009-W13, 2009-W14 & 2009-W15 -- 2009 WN, 2009 WF, 2009 WE, 2009 WD, 2009 VC1
A16Tentlingen Obs. in Switzerland, 1 in MPEC 2009-W14 -- 162998
B18Terskol Obs. in Russia, 1 in MPEC 2009-W13 -- 2009 WF
H83Timberlake Obs. in Virginia, 1 in MPEC 2009-W14 -- 2009 TK12
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 17 November '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 WFJPL Sentry14522018-2109401.1e-07-4.17-4.920JPL: "Analysis based on 17 observations spanning .62765 days (2009-Nov-16.31234 to 2009-Nov-16.93999)." Diameter approximately 0.370 km. from mean, weighted H=19.8.
NEODyS14522018-2089194.37e-08-4.62-5.170NEODyS: "Based on 17 optical observations (of which 0 are rejected as outliers) from 2009/11/16.313 to 2009/11/16.941."
2009 WBJPL Sentry1452R E M O V E DJPL: Risk listing removed at 0950 UTC.
2009 VA26JPL Sentry14522017-2108296.5e-07-3.90-4.430JPL: "Analysis based on 19 observations spanning 4.9698 days (2009-Nov-11.38063 to 2009-Nov-16.35046)." Diameter approximately 0.213 km. from mean, weighted H=21.0.
NEODyS14522017-2084255.08e-07-3.96-4.480NEODyS: "Based on 19 optical observations (of which 0 are rejected as outliers) from 2009/11/11.381 to 2009/11/16.351."

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 17 November '09

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

1600Grabbed MPEC 2009-W15 - 2009 WN - see above
1452Noted that JPL Sentry has reposted 2009 VA26 as an impact risk - see above
Noted that NEODyS has updated its 2009 VA26 risk assessment - see above
Noted that JPL Sentry has removed 2009 WB as an impact risk - see above
Noted that JPL Sentry has posted 2009 WF as an impact risk - see above
Noted that NEODyS has posted 2009 WF as an impact risk - see above
Grabbed MPEC 2009-W14 - Daily Orbit Update - see above
0716Grabbed MPEC 2009-W11 - 2009 WD - see above
Grabbed MPEC 2009-W12 - 2009 WE - see above
Grabbed MPEC 2009-W13 - 2009 WF - see above