Contents  on 6 August '08

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 6 August '08

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

When last checked at 2357 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had one new and one updated listing. Both of these were "one nighters." So far The Tracking News has counted a total of three 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 6 August '08

Minor Planet Electronic Circulars

As of last check at 2357 UTC, there have been three MPECs issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2008-P33 - "21:53 UT" - Comets C/2008 M4, 2008 M5, 2008 M6, 2008 M7, 2008 O1 (SOHO)


MPEC 2008-P32 - "14:12 UT" - 2008 PW4


<< DOU on 6 Aug. '08 >>  MPEC 2008-P31 - "06:09 UT" - Daily Orbit Update

Observers  on 6 August '08

Eighteen observing facilities appear in today's MPECs.

CodeObserver / observatory
B03Alter Satzberg Obs. in Austria, 1 in MPEC 2008-P31 -- 2003 GW
B37Ametlla del Valles Obs. in Spain, 11 in MPEC 2008-P31 -- 2008 OX1, 2008 MU1, 2003 OB4, 2001 TA45, 2000 RL77, 65690, 174050, 154278, 8567, 4257, 1917
H55Astronomical Research Obs. (ARO) in Illinois, 14 in MPEC 2008-P31 -- 2008 OQ8, 2008 OP8, 2008 OO8, 2008 OO1, 2008 ON10, 2008 OM8, 2008 OM, 2008 OA6, 2008 NU, 2008 NB, 2008 MR1, 2008 KZ5, 2008 JZ30, 2008 JR26
J51Atlante Obs. in the Canary Islands, 2 in MPEC 2008-P31 -- 2008 OS9, 164400
A81Balzaretto Obs. in Italy, 1 in MPEC 2008-P31 -- 1994 AW1
151Eschenberg Obs. in Switzerland, 6 in MPECs 2008-P31 & 2008-P32 -- 2008 PW4, 2008 OX2, 2008 OX1, 2008 OS7, 11398, 8567
F84Hibiscus Obs. in Tahiti, 1 in MPEC 2008-P31 -- 2001 RT17
E17Leura Obs. in New South Wales, 1 in MPEC 2008-P31 -- 2003 RM
932McCarthy Obs. in Connecticut, 5 in MPEC 2008-P31 -- 2008 OX1, 2008 NU, 2003 OB4, 1994 AW1, 65690
B67Mirasteilas Obs. in Switzerland, 3 in MPEC 2008-P31 -- 174050, 105140, 1917
A13Naef Obs. in Switzerland, 3 in MPEC 2008-P31 -- 2008 OX2, 2008 OX1, 8567
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 10 in MPEC 2008-P31 -- 2008 OX1, 2008 OS9, 2008 NU, 2005 TZ51, 2005 RC34, 2004 XN44, 2003 LO6, 2001 TA45, 164400, 8567
D90.Cristovao Jacques in Brazil via RAS Obs. Moorook in South Australia, 1 in MPEC 2008-P32 -- 2008 PW4
E12Siding Spring Survey (SSS) in New South Wales, 8 in MPECs 2008-P31 & 2008-P32 -- 2008 PW4, 2008 PL3, 2008 PK3, 2008 PJ3, 2008 PH3, 2008 PG2, 2008 OX8, 2008 OC9
645Sloan Digital Sky Survey in New Mexico, 1 in MPEC 2008-P31 -- 2008 BS2
2492LASCO Coronagraph 2 (SOHO C2) aboard the Solar & Heliospheric Obs. (SOHO) in Earth-Sun L1 HALO orbit, 4 in MPEC 2008-P33 -- C/2008 M7, C/2008 M6, C/2008 M5, C/2008 M4
2493LASCO Coronagraph 3 aboard the Solar & Heliospheric Obs. in Earth-Sun L1 HALO orbit, 1 in MPEC 2008-P33 -- C/2008 O1
A78Stia Obs. in Italy, 2 in MPEC 2008-P31 -- 2005 RC34, 11398
F85Tiki Obs. in Tahiti, 1 in MPEC 2008-P31 -- 2008 ON
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 6 August '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.
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 PW4JPL Sentry17512024-21072444.5e-06-3.94-4.440JPL: "Analysis based on 16 observations spanning .93768 days (2008-Aug-05.55802 to 2008-Aug-06.4957)." Diameter approximately 0.120 km. from mean, weighted H=22.2.
2008 PK3JPL Sentry1451R E M O V E DJPL: Risk listing removed at 0851 UTC.
2008 PH3JPL Sentry1451R E M O V E DJPL: Risk listing removed at 0849 UTC.
2008 OQ8NEODyS1451R E M O V E D-
JPL Sentry1451R E M O V E DJPL: Risk listing removed at 0849 UTC.
2008 OO1JPL Sentry1451R 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 6 August '08

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

2215Grabbed MPEC 2008-P33 - Comets C/2008 M4, 2008 M5, 2008 M6, 2008 M7, 2008 O1 (SOHO) - see above
1751Noted that JPL Sentry has posted 2008 PW4 as an impact risk - see above
The NEOCP has become active
1451Noted that JPL Sentry has removed 2008 OO1 as an impact risk - see above
Noted that JPL Sentry has removed 2008 OQ8 as an impact risk - see above
Noted that NEODyS has removed 2008 OQ8 as an impact risk - see above
Noted that JPL Sentry has removed 2008 PH3 as an impact risk - see above
Noted that JPL Sentry has removed 2008 PK3 as an impact risk - see above
Grabbed MPEC 2008-P31 - Daily Orbit Update - see above
Grabbed MPEC 2008-P32 - 2008 PW4 - see above
The NEOCP has become empty