Contents  on 16 August '10


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 16 August '10

The MPC's NEO Confirmation Page has 4 listings: 3 new, 1 updated

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had three new and one updated listings. Of these, two were "one nighters." So far The Tracking News has counted a total of eight listings on the NEOCP at some point today.

To learn how observers use the NEOCP, see the Practical guide on how to observe NEOCP object at Suno Observatory by Birtwhistle et al.

New MPECs  on 16 August '10

Minor Planet Electronic Circulars

As of last check at 2359 UTC, there have been six MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2010-Q06 - "22:39 UT" - Comet P/2010 P4 (WISE)

MPEC 2010-Q05 - "22:14 UT" - P/1998 U4 (Spahr) = P/2010 P3

MPEC 2010-Q04 - "22:12 UT" - 2010 PU66

MPEC 2010-Q03 - "21:11 UT" - 2010 PS66

MPEC 2010-Q02 - "21:08 UT" - 2010 PR66

<< DOU on 16 Aug. '10 >>  MPEC 2010-Q01 - "06:12 UT" - Daily Orbit Update

Observers  on 16 August '10

Sixteen observing facilities appear in today's MPECs.

CodeObserver / observatory
J16An Carraig Obs. in Northern Ireland, 1 in MPEC 2010-Q02 -- 2010 PR66
H21Astronomical Research Obs. Westfield in Illinois, 16 in MPECs 2010-Q01, 2010-Q02, 2010-Q03 & 2010-Q06 -- 2010 PY22, 2010 PS66, 2010 PR66, 2010 PQ2, 2010 PP2, 2010 PM9, 2010 PM10, 2010 PL9, 2010 PK9, 2010 PD57, P/2010 P4, 2010 OD101, 2010 OB, 2010 LT108, 213869, 194386
300Bisei Spaceguard Center in Japan, 1 in MPEC 2010-Q02 -- 2010 PR66
107Cavezzo Obs. in Italy, 1 in MPEC 2010-Q02 -- 2010 PR66
J95Great Shefford Obs. in England, 2 in MPECs 2010-Q02 & 2010-Q03 -- 2010 PS66, 2010 PR66
704LINEAR in New Mexico, 8 in MPECs 2010-Q01, 2010-Q02 & 2010-Q03 -- 2010 PS66, 2010 PR66, 2010 PM9, 2010 NW117, 2010 MF1, 244977, 241370, 23187
I36Los Campitos Obs. in Argentina, 1 in MPEC 2010-Q02 -- 2010 PR66
D90`Kevin Hills in England via RAS Obs. Moorook in South Australia, 1 in MPEC 2010-Q01 -- 2010 OH126
473Remanzacco Obs. in Italy, 1 in MPEC 2010-Q02 -- 2010 PR66
I20Rio Cuarto Obs. in Argentina, 1 in MPEC 2010-Q01 -- 2010 PR10
H36Sandlot Obs. in Kansas, 3 in MPECs 2010-Q02, 2010-Q05 & 2010-Q06 -- 2010 PR66, P/2010 P4, P/2010 P3
204Schiaparelli Obs. in Italy, 2 in MPECs 2010-Q02 & 2010-Q03 -- 2010 PS66, 2010 PR66
J26Spaceguard Centre in Wales, 1 in MPEC 2010-Q01 -- 4034
291Spacewatch 1.8m telescope in Arizona, 1 in MPEC 2010-Q06 -- P/2010 P4
B42Vitebsk Obs. in Belarus, 1 in MPEC 2010-Q02 -- 2010 PR66
C51WISE in Earth polar orbit, 12 in MPECs 2010-Q01, 2010-Q04 & 2010-Q06 -- 2010 PU66, P/2010 P4, 2010 DW1, 2010 CO1, 2010 CN1, 2010 CG18, 2005 NP1, 2005 GY110, 2005 ED318, 2004 VT60, 2000 YH29, 1998 SB15
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 16 August '10

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2359 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.
The time horizon for JPL is 100 years from today and for NEODyS is usually the year 2090. Both also post impact solutions beyond 100 years for a few special objects.
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
2010 PR66JPL Sentry23032015-2109274.4e-07-3.04-3.120JPL: "Analysis based on 40 observations spanning 1.5753 days (2010-Aug-15.2648 to 2010-Aug-16.84013)." Diameter approximately 0.450 km. from mean, weighted H=19.4.
2010 OH126JPL Sentry1419R E M O V E DJPL: Risk listing removed at 0949 UTC.
NEODyS1418R 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 16 August '10

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

2325Grabbed MPEC 2010-Q06 - Comet P/2010 P4 (WISE) - see above
2303Noted that JPL Sentry has posted 2010 PR66 as an impact risk - see above
2239Grabbed MPEC 2010-Q04 - 2010 PU66 - see above
Grabbed MPEC 2010-Q05 - P/1998 U4 (Spahr) = P/2010 P3 - see above
2200Grabbed MPEC 2010-Q02 - 2010 PR66 - see above
Grabbed MPEC 2010-Q03 - 2010 PS66 - see above
1419Noted that JPL Sentry has removed 2010 OH126 as an impact risk - see above
Grabbed MPEC 2010-Q01 - Daily Orbit Update - see above
1418Noted that NEODyS has removed 2010 OH126 as an impact risk - see above