Contents  on 26 October '08


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 26 October '08

The MPC's NEO Confirmation Page has 14 listings: 1 new, 13 updated

When last checked at 2358 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had one new and thirteen updated listings. Of these, six were "one nighters." So far The Tracking News has counted a total of 22 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 26 October '08

Minor Planet Electronic Circulars

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

MPEC 2008-U60 - "21:37 UT" - 2008 US4

MPEC 2008-U59 - "16:27 UT" - Comet P/2008 U1 (McMillan)

<< DOU on 26 Oct. '08 >>  MPEC 2008-U58 - "06:12 UT" - Daily Orbit Update

Observers  on 26 October '08

A total of 26 observing facilities appear in today's MPECs.

CodeObserver / observatory
B03Alter Satzberg Obs. in Austria, 1 in MPEC 2008-U60 -- 2008 US4
H55Astronomical Research Obs. in Illinois, 1 in MPEC 2008-U58 -- 2008 UN3
215Buchloe Obs. in Germany, 1 in MPEC 2008-U59 -- P/2008 U1
703Catalina Sky Survey (CSS) in Arizona, 9 in MPEC 2008-U58 -- 2008 SN1, 2008 NU, 2001 TW1, 1996 TE9, 39572, 162149, 138847, 11500, 5143
448Desert Moon Obs. in New Mexico, 6 in MPEC 2008-U58 -- 2008 UX, 2008 TN26, 2008 TD27, 2008 SV11, 2008 RE1, 2000 FL1
J27El Guijo Obs. in Spain, 2 in MPEC 2008-U58 -- 2008 SQ1, 162679
683Goodricke-Pigott Obs. in Arizona, 1 in MPEC 2008-U58 -- 171576
J95Great Shefford Obs. in England, 1 in MPEC 2008-U60 -- 2008 US4
F84Hibiscus Obs. in Tahiti, 2 in MPEC 2008-U58 -- 2008 UU1, 2008 TX3
704LINEAR in New Mexico, 13 in MPECs 2008-U58 & 2008-U60 -- 2008 US4, 2008 TC4, 2008 MZ, 2008 MH1, 2004 TL19, 2001 SG10, 1996 TE9, 89355, 190135, 171576, 11500, 9856, 1627
304Las Campanas Obs. in Chile, 7 in MPEC 2008-U58 -- 2008 TT26, 2008 RT26, 2005 WK4, 2002 TW55, 2001 UY4, 2001 SG10, 2001 KO20
5682David Tholen's team on Mauna Kea in Hawaii, 2 in MPEC 2008-U58 -- 2008 TQ26, 2004 MB6
B67Mirasteilas Obs. in Switzerland, 3 in MPEC 2008-U58 -- 2008 SP7, 190166, 2368
213Montcabre Obs. in Spain, 2 in MPECs 2008-U59 & 2008-U60 -- 2008 US4, P/2008 U1
G96Mt. Lemmon Survey (MLS) in Arizona, 6 in MPECs 2008-U58 & 2008-U60 -- 2008 US4, 2008 TK157, 2008 GV3, 2005 XH8, 1998 SJ70, 7358
J47Nazaret Obs. in Spain, 1 in MPEC 2008-U60 -- 2008 US4
B49Paus Obs. in Spain, 2 in MPECs 2008-U59 & 2008-U60 -- 2008 US4, P/2008 U1
A53Peschiera del Garda Obs. in Italy, 3 in MPEC 2008-U58 -- 2008 SQ1, 2008 SE, 2003 GW
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 6 in MPEC 2008-U58 -- 2008 UT1, 2008 TT26, 2008 SQ1, 2008 SP7, 2008 SE, 2008 MR1
204Schiaparelli Obs. in Italy, 1 in MPEC 2008-U58 -- 2008 QC
E12Siding Spring Survey (SSS) in New South Wales, 2 in MPEC 2008-U58 -- 87684, 24475
691Spacewatch 0.9m telescope in Arizona, 4 in MPECs 2008-U58 & 2008-U59 -- P/2008 U1, 137799, 2212, 2201
291Spacewatch 1.8m telescope in Arizona, 4 in MPEC 2008-U58 -- 2008 UE1, 2008 TZ3, 2008 TA1, 2005 AD3
673Table Mtn. Obs. in southern California, 1 in MPEC 2008-U59 -- P/2008 U1
H53Thompsonville Obs. in Illinois, 2 in MPEC 2008-U58 -- 16960, 1980
F85Tiki Obs. in Tahiti, 1 in MPEC 2008-U58 -- 2008 UR
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 26 October '08

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.
Note that the time horizon for JPL is 100 years from today and for NEODyS is usually the year 2090.
For the latest official risk assessments, and for explanations of the terminology, see the JPL NEO Program Sentry and NEODyS CLOMON (backup) risk pages.





Notes for Today's Latest Risk Assessments
2008 TQ26NEODyS1539R E M O V E D-
JPL Sentry1539R E M O V E DJPL: Risk listing removed at 0850 UTC.

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 26 October '08

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

2236Grabbed MPEC 2008-U60 - 2008 US4 - see above
1724Grabbed MPEC 2008-U59 - Comet P/2008 U1 (McMillan) - see above
1539Noted that JPL Sentry has removed 2008 TQ26 as an impact risk - see above
Noted that NEODyS has removed 2008 TQ26 as an impact risk - see above
0730Grabbed MPEC 2008-U58 - Daily Orbit Update - see above