Contents  on 16 July '10

Note: A/CC news pages will update infrequently for much of the remainder of July.


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 July '10

The MPC's NEO Confirmation Page has 14 listings: 8 new, 6 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had eight new and six updated listings. Of these, three were "one nighters." So far The Tracking News has counted a total of eighteen 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 July '10

Minor Planet Electronic Circulars

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

MPEC 2010-O04 - "17:11 UT" - 2010 NB2

MPEC 2010-O03 - "17:01 UT" - 2010 NZ1

MPEC 2010-O02 - "15:14 UT" - 1995 KG1

<< DOU on 16 July '10 >>  MPEC 2010-O01 - "06:12 UT" - Daily Orbit Update

Observers  on 16 July '10

Fourteen observing facilities appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 10 in MPECs 2010-O01, 2010-O03 & 2010-O04 -- 2010 NZ1, 2010 NK1, 2010 NH, 2010 NB2, 2010 MF1, 2010 JF87, 2010 GX62, 2010 EV45, 2003 KN18, 143527
160Castelmartini Obs. in Italy, 8 in MPEC 2010-O01 -- 2010 EH20, 2009 WC26, 2002 OS4, 85989, 230979, 161998, 159609, 7977
H26Doc Greiner Research Obs. (DGRO) in Wisconsin, 2 in MPEC 2010-O01 -- 2010 NK1, 2009 KD5
J75La Sagra Obs. in Spain, 2 in MPEC 2010-O01 -- 2010 AE, 2100
5682David Tholen's team on Mauna Kea in Hawaii, 3 in MPECs 2010-O02, 2010-O03 & 2010-O04 -- 2010 NZ1, 2010 NB2, 1995 KG1
B67Mirasteilas Obs. in Switzerland, 2 in MPEC 2010-O01 -- 2010 LE15, 4183
A13Naef Obs. in Switzerland, 4 in MPEC 2010-O01 -- 2010 AE, 2002 OS4, 7336, 4034
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 2 in MPEC 2010-O01 -- 2010 EH20, 85989
6581Dave Balam via Plaskett 1.8m Telescope in British Columbia, 1 in MPEC 2010-O04 -- 2010 NB2
H36Sandlot Obs. in Kansas, 1 in MPEC 2010-O04 -- 2010 NB2
B38Santa Mama Obs. in Italy, 4 in MPEC 2010-O01 -- 2010 NK1, 54789, 241370, 152889
204Schiaparelli Obs. in Italy, 7 in MPEC 2010-O01 -- 2010 NK1, 2010 EV45, 2010 EH20, 2009 XC2, 2009 WC26, 2007 ML13, 2002 OS4
E12Siding Spring Survey (SSS) in New South Wales, 4 in MPEC 2010-O01 -- 2010 NR1, 2005 MB, 2000 HD74, 68063
C51WISE in Earth polar orbit, 8 in MPECs 2010-O01, 2010-O02, 2010-O03 & 2010-O04 -- 2010 NZ1, 2010 NB2, 1995 KG1, 66400, 162903, 138359, 136874, 2102
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 16 July '10

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.
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 NB2JPL Sentry23002017-205343.6e-09-5.50-5.680JPL: "Analysis based on 20 observations spanning 5.9234 days (2010-Jul-10.31505 to 2010-Jul-16.23848)." Diameter approximately 0.230 km. from mean, weighted H=20.8.
2010 NHJPL Sentry12232077-209231.6e-06-6.37-6.440JPL: "Analysis based on 55 observations spanning 10.869 days (2010-Jul-04.42235 to 2010-Jul-15.29089)." Diameter approximately 0.025 km. from mean, weighted H=25.6.
NEODyS1223208912.02e-07-7.25-7.250NEODyS: "Based on 55 optical observations (of which 0 are rejected as outliers) from 2010/07/04.423 to 2010/07/15.292."

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 July '10

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

2300Noted that JPL Sentry has posted 2010 NB2 as an impact risk - see above
Grabbed MPEC 2010-O03 - 2010 NZ1 - see above
Grabbed MPEC 2010-O04 - 2010 NB2 - see above
1558Grabbed MPEC 2010-O02 - 1995 KG1 - see above
1223Noted that JPL Sentry has updated its 2010 NH risk assessment - see above
Noted that NEODyS has updated its 2010 NH risk assessment - see above
Grabbed MPEC 2010-O01 - Daily Orbit Update - see above