Contents  on 4 July '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 4 July '10

The MPC's NEO Confirmation Page has 13 listings: 4 new, 9 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had four new and nine updated listings. Of these, one was a "one nighter." So far The Tracking News has counted a total of fourteen 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 4 July '10

Minor Planet Electronic Circulars

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

MPEC 2010-N10 - "23:17 UT" - 2002 BF25

<< DOU on 4 July '10 >>  MPEC 2010-N09 - "06:09 UT" - Daily Orbit Update

MPEC 2010-N08 - "00:19 UT" - Comet C/2010 H1 (Garradd)

Observers  on 4 July '10

Twelve observing facilities appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 11 in MPEC 2010-N09 -- 2010 MW1, 2010 MF1, 2010 LJ14, 2010 GX62, 2010 GA34, 2010 EV45, 2010 EC135, 2009 XC2, 2006 QA58, 2004 EN20, 2002 OS4
A81Balzaretto Obs. in Italy, 1 in MPEC 2010-N09 -- 161998
432Boambee Obs. in New South Wales, 1 in MPEC 2010-N09 -- 2005 ED318
H26Doc Greiner Research Obs. (DGRO) in Wisconsin, 2 in MPEC 2010-N09 -- 2010 EC135, 2005 ED318
J95Great Shefford Obs. in England, 2 in MPEC 2010-N09 -- 2010 NB, 2010 NA
A06Mataro Obs. in Spain, 2 in MPEC 2010-N09 -- 85818, 4055
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2010-N09 -- 2010 HQ80
932McCarthy Obs. in Connecticut, 1 in MPEC 2010-N09 -- 161998
D90RAS Obs. Moorook in South Australia, 1 in MPEC 2010-N08 -- C/2010 H1
D21Shenton Park Obs. in Western Australia, 1 in MPEC 2010-N10 -- 2002 BF25
C51WISE in Earth polar orbit, 1 in MPEC 2010-N08 -- C/2010 H1
I15Wishing Star Obs. in Rhode Island, 3 in MPEC 2010-N09 -- 2010 NA, 2010 EH20, 152889
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 4 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 HQ80NEODyS1600R E M O V E D-
JPL Sentry1600R E M O V E DJPL: Risk listing removed at 0950 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 4 July '10

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

2358Grabbed MPEC 2010-N10 - 2002 BF25 - see above
1600Noted that JPL Sentry has removed 2010 HQ80 as an impact risk - see above
Noted that NEODyS has removed 2010 HQ80 as an impact risk - see above
Grabbed MPEC 2010-N09 - Daily Orbit Update - see above
0107Grabbed MPEC 2010-N08 - Comet C/2010 H1 (Garradd) - see above