Contents  on 10 September '08

Note: These A/CC news pages will update less often and at irregular intervals through Wednesday, September 10th.

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 10 September '08

The MPC's NEO Confirmation Page has 3 listings: 1 new, 2 updated

When last checked at 2215 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had one new and two updated listings. Of these, two were "one nighters." The Tracking News counted a total of ten objects listed on the NEOCP at some point on this day.

New MPECs  on 10 September '08

Minor Planet Electronic Circulars

There were six MPECs issued this day from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2008-R60 - "22:20 UT" - Comet P/1896 R2 = 2008 R6 (Giacobini)


MPEC 2008-R59 - "20:20 UT" - 2005 EK94


MPEC 2008-R58 - "16:25 UT" - 2007 TA19


MPEC 2008-R57 - "16:06 UT" - 2008 RT26


MPEC 2008-R56 - "15:49 UT" - 2008 RS26


<< DOU on 10 Sept. '08 >>  MPEC 2008-R55 - "06:08 UT" - Daily Orbit Update

Observers  on 10 September '08

A total of 28 observing facilities appeared in this day's MPECs.

CodeObserver / observatory
349Ageo Obs. in Japan, 1 in MPEC 2008-R60 -- P/2008 R6
B03Alter Satzberg Obs. in Austria, 2 in MPEC 2008-R55 -- 2008 RY24, 2001 SK9
B37Ametlla del Valles Obs. in Spain, 2 in MPEC 2008-R55 -- 2004 SB56, 188452
H55Astronomical Research Obs. (ARO) in Illinois, 4 in MPECs 2008-R55, 2008-R57, 2008-R58 & 2008-R59 -- 2008 RT26, 2008 QU3, 2007 TA19, 2005 EK94
J51Atlante Obs. in the Canary Islands, 1 in MPEC 2008-R60 -- P/2008 R6
A81Balzaretto Obs. in Italy, 4 in MPEC 2008-R55 -- 39572, 189700, 164400, 163000
A74Bergen-Enkheim Obs. in Germany, 1 in MPEC 2008-R55 -- 2005 XY
300Bisei Spaceguard Center in Japan, 1 in MPEC 2008-R60 -- P/2008 R6
235CAST Obs. in Italy, 1 in MPEC 2008-R60 -- P/2008 R6
703Catalina Sky Survey (CSS) in Arizona, 4 in MPEC 2008-R55 -- 2006 WZ2, 155140, 1865, 1620
246KLENOT in the Czech Republic, 7 in MPECs 2008-R55 & 2008-R57 -- 2008 RY24, 2008 RX24, 2008 RT26, 2008 RR24, 2008 RQ24, 2008 QT3, 1999 RJ27
D35Lulin Minor Bodies Tracking in Taiwan, 1 in MPEC 2008-R60 -- P/2008 R6
952Marxuquera Obs. in Spain, 1 in MPEC 2008-R60 -- P/2008 R6
B67Mirasteilas Obs. in Switzerland, 1 in MPEC 2008-R55 -- 8567
A99Monte Baldo Obs. in Italy, 1 in MPEC 2008-R60 -- P/2008 R6
900Moriyama Obs. in Japan, 1 in MPEC 2008-R60 -- P/2008 R6
G96Mt. Lemmon Survey in Arizona, 1 in MPEC 2008-R57 -- 2008 RT26
644NEAT's Mt. Palomar telescope in southern California, 1 in MPEC 2008-R55 -- 2002 JC9
428Reedy Creek Obs. in Queensland, 1 in MPEC 2008-R55 -- 2008 PL3
473Remanzacco Obs. in Italy, 1 in MPEC 2008-R60 -- P/2008 R6
E12Siding Spring Survey (SSS) in New South Wales, 3 in MPECs 2008-R55 & 2008-R56 -- 2008 RV, 2008 RS26, 2008 QC
B40Skylive Obs. in Italy, 1 in MPEC 2008-R60 -- P/2008 R6
691Spacewatch 0.9m telescope in Arizona, 5 in MPEC 2008-R55 -- 2006 UA, 2002 SP, 88188, 152685, 108906
291Spacewatch 1.8m telescope in Arizona, 1 in MPEC 2008-R55 -- 2008 RJ1
6735Jim Young via Table Mtn. Obs. in southern California, 1 in MPEC 2008-R57 -- 2008 RT26
B18Terskol Obs. in Russia, 1 in MPEC 2008-R60 -- P/2008 R6
J70Vega del Thader Obs. in Spain, 1 in MPEC 2008-R60 -- P/2008 R6
D89Yamagata Obs. in Japan, 1 in MPEC 2008-R60 -- P/2008 R6
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 10 September '08

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS at 2216 and JPL at 2217 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.
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
2008 RJ1NEODyS1702R E M O V E D-
JPL Sentry1702R E M O V E DJPL: Risk listing removed at 0849 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 10 September '08

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

0032 9/11Grabbed MPEC 2008-R60 - Comet P/1896 R2 = 2008 R6 (Giacobini) - see above
2215Grabbed MPEC 2008-R59 - 2005 EK94 - see above
1702Noted that JPL Sentry has removed 2008 RJ1 as an impact risk - see above
Noted that NEODyS has removed 2008 RJ1 as an impact risk - see above
Grabbed MPEC 2008-R56 - 2008 RS26 - see above
Grabbed MPEC 2008-R57 - 2008 RT26 - see above
Grabbed MPEC 2008-R58 - 2007 TA19 - see above
0756Grabbed MPEC 2008-R55 - Daily Orbit Update - see above