Contents  on 16 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 16 November '09

The MPC's NEO Confirmation Page has 8 listings: 1 new, 7 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had one new and seven updated listings. Of these, four were "one nighters." So far The Tracking News has counted a total of eighteen 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 16 November '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-W10 - "22:51 UT" - Comets C/2009 Q6, 2009 Q7, 2009 Q8 (SOHO)


MPEC 2009-W09 - "22:42 UT" - Comets C/2009 O5, 2009 P3, 2009 P4, 2009 P5 (SOHO)


MPEC 2009-W08 - "18:25 UT" - 2009 WC


MPEC 2009-W07 - "18:17 UT" - 2009 WB


MPEC 2009-W06 - "18:12 UT" - 2009 WA


MPEC 2009-W05 - "17:17 UT" - 2009 VS44


MPEC 2009-W04 - "17:15 UT" - 2009 VR44


MPEC 2009-W03 - "17:11 UT" - 2009 VQ44


MPEC 2009-W02 - "17:03 UT" - 2009 VP44


<< DOU on 16 Nov. '09 >>  MPEC 2009-W01 - "07:09 UT" - Daily Orbit Update

Observers  on 16 November '09

Nineteen observing facilities appear in today's MPECs.

CodeObserver / observatory
A50Andrushivka Obs. in the Ukraine, 2 in MPECs 2009-W03 & 2009-W06 -- 2009 WA, 2009 VQ44
J51Atlante Obs. in the Canary Islands, 1 in MPEC 2009-W01 -- 2009 UV18
703Catalina Sky Survey (CSS) in Arizona, 14 in MPECs 2009-W01, 2009-W03, 2009-W04, 2009-W05, 2009-W06 & 2009-W07 -- 2009 WB, 2009 WA, 2009 VW, 2009 VS44, 2009 VR44, 2009 VQ44, 2009 UW18, 2009 UK28, 224926, 217683, 215188, 21088, 162273, 1627
850Cordell-Lorenz Obs. in Tennessee, 2 in MPECs 2009-W01 & 2009-W03 -- 2009 VQ44, 4015
683Goodricke-Pigott Obs. in Arizona, 1 in MPEC 2009-W01 -- 5131
651Grasslands Obs. in Arizona, 5 in MPECs 2009-W03, 2009-W04, 2009-W05, 2009-W06 & 2009-W07 -- 2009 WB, 2009 WA, 2009 VS44, 2009 VR44, 2009 VQ44
J95Great Shefford Obs. in England, 1 in MPEC 2009-W02 -- 2009 VP44
704LINEAR in New Mexico, 14 in MPECs 2009-W01, 2009-W02 & 2009-W03 -- 2009 VQ44, 2009 VP44, 2004 XM35, 2004 XJ3, 2000 GU127, 66251, 30825, 16816, 162998, 138852, 8201, 5587, 1943, 433
J75La Sagra Obs. in Spain, 2 in MPEC 2009-W01 -- 217683, 154244
H01Magdalena Ridge Obs. (MRO) in New Mexico, 3 in MPECs 2009-W04, 2009-W05 & 2009-W08 -- 2009 WC, 2009 VS44, 2009 VR44
G96Mt. Lemmon Survey (MLS) in Arizona, 5 in MPECs 2009-W01, 2009-W03, 2009-W04, 2009-W05 & 2009-W08 -- 2009 WC, 2009 VS44, 2009 VR44, 2009 VQ44, 99248
H23Pear Tree Obs. in Florida, 3 in MPEC 2009-W01 -- 2009 ST19, 177614, 3361
I20Rio Cuarto Obs. in Argentina, 1 in MPEC 2009-W01 -- 217796
854Sabino Canyon Obs. in Arizona, 1 in MPEC 2009-W02 -- 2009 VP44
2493LASCO Coronagraph 3 (SOHO C3) aboard the Solar & Heliospheric Obs. (SOHO) in Earth-Sun L1 HALO orbit, 7 in MPECs 2009-W09 & 2009-W10 -- C/2009 Q8, C/2009 Q7, C/2009 Q6, C/2009 P5, C/2009 P4, C/2009 P3, C/2009 O5
291Spacewatch 1.8m telescope in Arizona, 6 in MPEC 2009-W01 -- 2009 VJ24, 2009 UT87, 2009 UD2, 2009 UB19, 2009 SN98, 2009 QF31
926Tenagra II Obs. in Arizona, 8 in MPECs 2009-W01, 2009-W02, 2009-W03, 2009-W04, 2009-W05 & 2009-W07 -- 2009 WB, 2009 VZ, 2009 VS44, 2009 VR44, 2009 VQ44, 2009 VP44, 2009 VC1, 2009 VB1
H47Vicksburg Obs. in Mississippi, 3 in MPEC 2009-W01 -- 2009 TK12, 5626, 3552
G56Walnut Creek Obs. in northern California, 1 in MPEC 2009-W01 -- 2009 KC3
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 16 November '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 WBJPL Sentry2001210411.4e-10-9.16-9.160JPL: "Analysis based on 13 observations spanning .13480 days (2009-Nov-16.21331 to 2009-Nov-16.34811)." Diameter approximately 0.080 km. from mean, weighted H=23.1.
2009 BDNEODyS16312071-209051.1e-05-6.95-7.180NEODyS: "Based on 122 optical observations (of which 1 are rejected as outliers) from 2009/01/16.277 to 2009/11/01.469."

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 16 November '09

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

2301Grabbed MPEC 2009-W09 - Comets C/2009 O5, 2009 P3, 2009 P4, 2009 P5 (SOHO) - see above
Grabbed MPEC 2009-W10 - Comets C/2009 Q6, 2009 Q7, 2009 Q8 (SOHO) - see above
2001Noted that JPL Sentry has posted 2009 WB as an impact risk - see above
1830Grabbed MPEC 2009-W06 - 2009 WA - see above
Grabbed MPEC 2009-W07 - 2009 WB - see above
Grabbed MPEC 2009-W08 - 2009 WC - see above
1801Grabbed MPEC 2009-W02 - 2009 VP44 - see above
Grabbed MPEC 2009-W03 - 2009 VQ44 - see above
Grabbed MPEC 2009-W04 - 2009 VR44 - see above
Grabbed MPEC 2009-W05 - 2009 VS44 - see above
1631Noted that NEODyS has updated its 2009 BD risk assessment - see above
1528Grabbed MPEC 2009-W01 - Daily Orbit Update - see above