SOHO-1932 diving into Sun on 
21 Oct. 2010, courtesy NASA/ESA.

Comet SOHO-1932 was first reported October 19th by amateur Bo Zhou in China from viewing NASA/ESA SOHO frames online. This is one of the last images as the likely Kreutz family member disappeared behind the C2 coronagraph disk on its way into the Sun. Image from 0824 UTC October 21st, courtesy of NASA/ESA.

Contents  on 22 October '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 22 October '10

The MPC's NEO Confirmation Page is currently empty

The NEOCP is currently empty. There were seven listings noted earlier today.

New MPECs  on 22 October '10

Minor Planet Electronic Circulars

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

<< DOU on 22 Oct. '10 >>  MPEC 2010-U31 - "06:09 UT" - Daily Orbit Update

Observers  on 22 October '10

Thirteen observing facilities appear in today's MPEC.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 9 in MPEC 2010-U31 -- 2010 UK, 2010 UD, 2010 TM3, 2010 TK19, 2010 TJ54, 2010 TH54, 2010 SK15, 2010 RM42, 2010 PM10
B75Betelgeuse Station in Italy, 1 in MPEC 2010-U31 -- 2010 UD
160Castelmartini Obs. in Italy, 6 in MPEC 2010-U31 -- 2010 UD, 2010 TG19, 2010 RN80, 2010 PM10, 199145, 154029
H26Doc Greiner Research Obs. in Wisconsin, 1 in MPEC 2010-U31 -- 2010 TM3
639Dresden Obs. in Germany, 2 in MPEC 2010-U31 -- 2010 TG19, 153814
203GiaGa Obs. in Italy, 1 in MPEC 2010-U31 -- 2010 UD
951Highworth Obs. in England, 1 in MPEC 2010-U31 -- 153814
E28Kuriwa Obs., 2 in MPEC 2010-U31 -- 2010 RF12, 66146
704LINEAR in New Mexico, 4 in MPEC 2010-U31 -- 2010 UP, 2004 TC10, 2002 OS4, 154029
J75La Sagra Obs. in Spain, 1 in MPEC 2010-U31 -- 2004 FU4
130Lumezzane Obs. in Italy, 10 in MPEC 2010-U31 -- 2010 SK15, 2010 RP80, 2007 VG189, 2001 TX44, 2000 TU28, 85770, 19764, 154029, 153814, 4486
E12Siding Spring Survey in New South Wales, 1 in MPEC 2010-U31 -- 2010 UK
510Siegen Obs. in Germany, 5 in MPEC 2010-U31 -- 2010 TG19, 2010 LY63, 2007 RU17, 2003 UV11, 137032
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 22 October '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 UKJPL Sentry14322068-2108255.9e-04-4.35-4.360JPL: "Analysis based on 76 observations spanning 3.0928 days (2010-Oct-17.49652 to 2010-Oct-20.589297)." Diameter approximately 0.014 km. from mean, weighted H=26.8.
NEODyS14322068-2090206.18e-04-4.33-4.340NEODyS: "Based on 78 optical observations (of which 2 are rejected as outliers) from 2010/10/17.497 to 2010/10/20.590."
2010 RF12NEODyS14542095-210094.91e-02-3.35-3.350NEODyS: "Based on 322 optical observations (of which 3 are rejected as outliers) from 2010/09/05.406 to 2010/09/08.516."
JPL Sentry14322095-2110385.3e-02-3.32-3.320JPL: "Analysis based on 320 observations spanning 3.1100 days (2010-Sep-05.40477 to 2010-Sep-08.514787)." Diameter approximately 0.007 km. from mean, weighted H=28.4.

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 22 October '10

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

1454Noted that NEODyS has updated its 2010 RF12 risk assessment - see above
1432Noted that JPL Sentry has updated its 2010 RF12 risk assessment - see above
Noted that JPL Sentry has updated its 2010 UK risk assessment - see above
Noted that NEODyS has updated its 2010 UK risk assessment - see above
Grabbed MPEC 2010-U31 - Daily Orbit Update - see above
Noted that the NEOCP has become empty