Contents  on 20 August '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 20 August '08

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

When last checked at 2357 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had one updated listing. So far The Tracking News has counted a total of two 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 20 August '08

Minor Planet Electronic Circulars

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

MPEC 2008-Q12 - "22:18 UT" - Comet C/2008 Q1 (Maticic)

<< DOU on 20 Aug. '08 >>  MPEC 2008-Q11 - "06:09 UT" - Daily Orbit Update

Observers  on 20 August '08

A total of 28 observing facilities appear in today's MPECs.

CodeObserver / observatory
B03Alter Satzberg Obs. in Austria, 1 in MPEC 2008-Q12 -- C/2008 Q1
H55Astronomical Research Obs. (ARO) in Illinois, 23 in MPECs 2008-Q11 & 2008-Q12 -- C/2008 Q1, 2008 PV16, 2008 PJ9, 2008 PF2, 2008 OX2, 2008 OS7, 2008 OP8, 2008 ON, 2008 OM8, 2008 NU, 2008 MQ1, 2008 MH1, 2008 JO24, 2007 YQ56, 2007 LB15, 2006 SC6, 2005 TU45, 2004 XO14, 2004 XH29, 2000 RD34, 65733, 54071, 137799
J51Atlante Obs. in the Canary Islands, 3 in MPEC 2008-Q11 -- 2008 QB, 188452, 3753
235CAST Obs. in Italy, 1 in MPEC 2008-Q12 -- C/2008 Q1
B09Capannoli Obs. in Italy, 1 in MPEC 2008-Q12 -- C/2008 Q1
B20Carmelita Obs. in Spain, 1 in MPEC 2008-Q12 -- C/2008 Q1
B55Comeglians Obs. in Italy, 2 in MPECs 2008-Q11 & 2008-Q12 -- 2008 QB, C/2008 Q1
106Crni Vrh Obs. in Slovenia, 1 in MPEC 2008-Q12 -- C/2008 Q1
J27El Guijo Obs. in Spain, 2 in MPEC 2008-Q11 -- 164400, 8567
595Farra d'Isonzo Obs. in Italy, 1 in MPEC 2008-Q12 -- C/2008 Q1
J95Great Shefford Obs. in England, 2 in MPECs 2008-Q11 & 2008-Q12 -- 2008 QB, C/2008 Q1
355Hadano Obs. in Japan, 1 in MPEC 2008-Q12 -- C/2008 Q1
F84Hibiscus Obs. in Tahiti, 2 in MPEC 2008-Q11 -- 2008 PG2, 2008 OX8
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2008-Q11 -- 2008 PJ9
932McCarthy Obs. in Connecticut, 4 in MPECs 2008-Q11 & 2008-Q12 -- 2008 QB, C/2008 Q1, 2008 PV16, 188452
118Modra Obs. in Slovakia, 1 in MPEC 2008-Q12 -- C/2008 Q1
900Moriyama Obs. in Japan, 1 in MPEC 2008-Q12 -- C/2008 Q1
473Remanzacco Obs. in Italy, 1 in MPEC 2008-Q12 -- C/2008 Q1
461SZTE Asteroid Program in Hungary, 1 in MPEC 2008-Q12 -- C/2008 Q1
104San Marcello Pistoiese Obs. in Italy, 1 in MPEC 2008-Q12 -- C/2008 Q1
B38Santa Mama Obs. in Italy, 3 in MPEC 2008-Q11 -- 2004 SB56, 1994 AW1, 188452
E12Siding Spring Survey (SSS) in New South Wales, 8 in MPEC 2008-Q11 -- 2008 PR9, 2008 OX8, 2008 MZ, 1996 TE9, 85839, 66391, 4179, 3288
H85Silver Spring Obs. in Maryland, 1 in MPEC 2008-Q12 -- C/2008 Q1
147Suno Obs. in Italy, 1 in MPEC 2008-Q12 -- C/2008 Q1
A98Taurus-1 Obs. in Belarus, 1 in MPEC 2008-Q11 -- 8567
H53Thompsonville Obs. in Illinois, 4 in MPEC 2008-Q11 -- 2004 SB56, 39572, 11398, 4179
F85Tiki Obs. in Tahiti, 1 in MPEC 2008-Q11 -- 2001 UZ16
097Wise Obs. in Israel, 1 in MPEC 2008-Q11 -- 4179
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 20 August '08

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2357 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 PJ9NEODyS1433R 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 20 August '08

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

2302Grabbed MPEC 2008-Q12 - Comet C/2008 Q1 (Maticic) - see above
1433Noted that NEODyS has removed 2008 PJ9 as an impact risk - see above
Grabbed MPEC 2008-Q11 - Daily Orbit Update - see above