Contents  on 5 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 5 August '08

The MPC's NEO Confirmation Page has 1 listing: 1 updated

When last checked at 2358 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had one updated listing. This was a "one nighter." So far The Tracking News has counted a total of five 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 5 August '08

Minor Planet Electronic Circulars

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


MPEC 2008-P30 - "21:38 UT" - 2007 TU431, 2007 TV431


MPEC 2008-P29 - "13:25 UT" - 2008 PL3


MPEC 2008-P28 - "13:22 UT" - 2008 PK3


MPEC 2008-P27 - "13:16 UT" - 2008 PJ3


MPEC 2008-P26 - "13:09 UT" - 2008 PH3


<< DOU on 5 Aug. '08 >>  MPEC 2008-P25 - "06:09 UT" - Daily Orbit Update


MPEC 2008-P24 - "04:02 UT" - 2008 PT1

Observers  on 5 August '08

Nineteen observing facilities appear in today's MPECs.

CodeObserver / observatory
H55Astronomical Research Obs. (ARO) in Illinois, 14 in MPEC 2008-P25 -- 2008 PF1, 2008 PE1, 2008 OX2, 2008 OV2, 2008 OS7, 2008 OO8, 2008 ON10, 2008 OM8, 2008 OC9, 2008 OB9, 2008 JQ14, 2008 JO24, 2004 HE12, 2000 CT101
J51Atlante Obs. in the Canary Islands, 5 in MPEC 2008-P25 -- 2008 OS9, 35107, 11398, 8567, 4179
807Cerro Tololo Inter-American Obs. (CTIO) in Chile, 2 in MPEC 2008-P30 -- 2007 TV431, 2007 TU431
106Crni Vrh Obs. in Slovenia, 1 in MPEC 2008-P25 -- 2000 RL77
J27El Guijo Obs. in Spain, 2 in MPEC 2008-P25 -- 90403, 65690
704LINEAR in New Mexico, 8 in MPEC 2008-P25 -- 2008 PF1, 2008 OS9, 2008 OS7, 2008 OO, 90075, 7888, 5786, 4179
J75La Sagra Obs. in Spain, 1 in MPEC 2008-P24 -- 2008 PT1
304Las Campanas Obs. in Chile, 2 in MPEC 2008-P30 -- 2007 TV431, 2007 TU431
E17Leura Obs. in New South Wales, 2 in MPEC 2008-P25 -- 2007 XJ20, 2003 RM
B33Libbiano Obs. in Italy, 1 in MPEC 2008-P25 -- 2008 OC9
620Mallorca Obs. on Mallorca, 1 in MPEC 2008-P24 -- 2008 PT1
568Mauna Kea in Hawaii, 2 in MPEC 2008-P30 -- 2007 TV431, 2007 TU431
932McCarthy Obs. in Connecticut, 2 in MPEC 2008-P25 -- 2008 NU, 35107
104San Marcello Pistoiese Obs. in Italy, 1 in MPEC 2008-P25 -- 2008 ON10
B38Santa Mama Obs. in Italy, 3 in MPEC 2008-P25 -- 90403, 65690, 188452
E12Siding Spring Survey (SSS) in New South Wales, 9 in MPECs 2008-P24, 2008-P25, 2008-P26, 2008-P27, 2008-P28 & 2008-P29 -- 2008 PT1, 2008 PL3, 2008 PK3, 2008 PJ3, 2008 PH3, 2008 PG2, 2008 EZ97, 2005 BC, 5836
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2008-P25 -- 2008 OA6
A98Taurus-1 Obs. in Belarus, 1 in MPEC 2008-P25 -- 90403
H53Thompsonville Obs. in Illinois, 5 in MPEC 2008-P25 -- 188452, 11398, 8567, 7889, 4179
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 5 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 PK3JPL Sentry15412070-207632.3e-09-7.06-7.410JPL: "Analysis based on 9 observations spanning .99878 days (2008-Aug-03.7944 to 2008-Aug-04.79318)." Diameter approximately 0.140 km. from mean, weighted H=21.9.
2008 PH3JPL Sentry15412021-2104441.8e-08-5.83-6.660JPL: "Analysis based on 6 observations spanning .82182 days (2008-Aug-03.68863 to 2008-Aug-04.51045)." Diameter approximately 0.194 km. from mean, weighted H=21.3.
2008 PF1JPL Sentry15412018-2097154.5e-09-6.64-7.300JPL: "Analysis based on 34 observations spanning 1.1024 days (2008-Aug-03.27394 to 2008-Aug-04.37636)." Diameter approximately 0.129 km. from mean, weighted H=22.1.
NEODyS15412016-203762.25e-09-6.80-7.370NEODyS: "Based on 34 optical observations (of which 0 are rejected as outliers) from 2008/08/03.275 to 2008/08/04.377."
2008 ON13NEODyS15412022-2086231.13e-08-4.78-5.380NEODyS: "Based on 15 optical observations (of which 0 are rejected as outliers) from 2008/07/31.394 to 2008/08/04.104."
2008 OB9JPL Sentry15412019-2106183.7e-07-2.13-2.450JPL: "Analysis based on 20 observations spanning 5.8983 days (2008-Jul-29.34054 to 2008-Aug-04.23882)." Diameter approximately 1.108 km. from mean, weighted H=17.4.
NEODyS15412019-2088133.05e-07-2.20-2.550NEODyS: "Based on 21 optical observations (of which 1 are rejected as outliers) from 2008/07/29.341 to 2008/08/04.240."
2008 OOJPL Sentry15412092-210032.8e-07-4.04-4.140JPL: "Analysis based on 80 observations spanning 9.1711 days (2008-Jul-26.09211 to 2008-Aug-04.26326)." Diameter approximately 0.378 km. from mean, weighted H=19.8.
NEODyS1541R E M O V E D-

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 5 August '08

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

2207Grabbed MPEC 2008-P30 - 2007 TU431, 2007 TV431 - see above
1541Noted that JPL Sentry has updated its 2008 OB9 risk assessment - see above
Noted that NEODyS has updated its 2008 OB9 risk assessment - see above
Noted that NEODyS has posted 2008 ON13 as an impact risk - see above
Noted that JPL Sentry has updated its 2008 OO risk assessment - see above
Noted that NEODyS has removed 2008 OO as an impact risk - see above
Noted that JPL Sentry has updated its 2008 PF1 risk assessment - see above
Noted that NEODyS has posted 2008 PF1 as an impact risk - see above
Noted that JPL Sentry has posted 2008 PH3 as an impact risk - see above
Noted that JPL Sentry has posted 2008 PK3 as an impact risk - see above
Grabbed MPEC 2008-P25 - Daily Orbit Update - see above
Grabbed MPEC 2008-P26 - 2008 PH3 - see above
Grabbed MPEC 2008-P27 - 2008 PJ3 - see above
Grabbed MPEC 2008-P28 - 2008 PK3 - see above
Grabbed MPEC 2008-P29 - 2008 PL3 - see above
0409Grabbed MPEC 2008-P24 - 2008 PT1 - see above