Contents  on 23 October '10

Note: These A/CC news pages may not update again until sometime tomorrow, Sunday, October 24th UTC.

Resources:

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NEOCP Activity  on 23 October '10

Not active

The Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) was not active on this day.

New MPECs  on 23 October '10

Minor Planet Electronic Circulars

There were four MPECs posted this day from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2010-U35 - "15:26 UT" - Comet P/2010 T1 (McNaught)


MPEC 2010-U34 - "15:19 UT" - Comet C/2010 S1 (LINEAR)


MPEC 2010-U33 - "15:13 UT" - Comet P/2010 R2 (La Sagra)


<< DOU on 23 Oct. '10 >>  MPEC 2010-U32 - "06:09 UT" - Daily Orbit Update

Observers  on 23 October '10

A total of 25 observing facilities appeared in this day's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 10 in MPEC 2010-U32 -- 2010 UD, 2010 TY54, 2010 TV149, 2010 TU149, 2010 TJ7, 2010 TH19, 2010 TF54, 2010 TC55, 2010 SK15, 2010 RN80
B75Betelgeuse Station in Italy, 1 in MPEC 2010-U32 -- 2010 TG19
235CAST Obs. in Italy, 1 in MPEC 2010-U34 -- C/2010 S1
160Castelmartini Obs. in Italy, 7 in MPEC 2010-U32 -- 2010 TF54, 2010 SD13, 2010 RN80, 2010 NW117, 2006 BG, 2004 VV, 154029
703Catalina Sky Survey in Arizona, 1 in MPEC 2010-U33 -- P/2010 R2
A77Chante-Perdrix Obs. in France, 1 in MPEC 2010-U33 -- P/2010 R2
J01Cielo Profundo Obs. in Spain, 2 in MPECs 2010-U33 & 2010-U34 -- C/2010 S1, P/2010 R2
E10Faulkes Telescope South in New South Wales, 1 in MPEC 2010-U35 -- P/2010 T1
J95Great Shefford Obs. in England, 1 in MPEC 2010-U32 -- 2010 TG19
585Kiev Comet Station in the Ukraine, 2 in MPECs 2010-U33 & 2010-U34 -- C/2010 S1, P/2010 R2
D95Kurihara Obs. in Japan, 1 in MPEC 2010-U34 -- C/2010 S1
J38La Vara Obs. in Spain, 1 in MPEC 2010-U34 -- C/2010 S1
B82Maidbronn Obs. in Germany, 1 in MPEC 2010-U34 -- C/2010 S1
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2010-U32 -- 2010 TQ54
213Montcabre Obs. in Spain, 2 in MPECs 2010-U33 & 2010-U34 -- C/2010 S1, P/2010 R2
945Monte Deva Obs. in Spain, 1 in MPEC 2010-U34 -- C/2010 S1
900Moriyama Obs. in Japan, 1 in MPEC 2010-U33 -- P/2010 R2
J47Nazaret Obs. in Spain, 2 in MPECs 2010-U33 & 2010-U34 -- C/2010 S1, P/2010 R2
D92Osaki Obs. in Japan, 1 in MPEC 2010-U33 -- P/2010 R2
561Piszkesteto Sta. in Hungary, 2 in MPECs 2010-U33 & 2010-U34 -- C/2010 S1, P/2010 R2
473Remanzacco Obs. in Italy, 1 in MPEC 2010-U33 -- P/2010 R2
E12Siding Spring Survey in New South Wales, 1 in MPEC 2010-U32 -- 2010 TG19
D96Tzec Maun Obs. Moorook in South Australia, 1 in MPEC 2010-U35 -- P/2010 T1
C51WISE in Earth polar orbit, 1 in MPEC 2010-U32 -- 53789
I15Wishing Star Obs. in Rhode Island, 4 in MPEC 2010-U32 -- 2010 UD, 2002 OS4, 153814, 137032
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 23 October '10

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 1455 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.
0000NNN000

Object

Risk
Monitor
When
Noted
UTC
0000T0000
Year
Range

VI
#
000NN00
Prob
Cum
T0000
PS
Cum
T0000
PS
Max

T
S


Notes for Today's Latest Risk Assessments
2010 TU149NEODyS1241207713.44e-08-4.99-4.990NEODyS: "Based on 59 optical observations (of which 0 are rejected as outliers) from 2010/10/13.379 to 2010/10/22.290."
JPL Sentry1241R E M O V E DJPL: Risk listing removed at 0954 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 23 October '10

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

0023 10/24Grabbed MPEC 2010-U33 - Comet P/2010 R2 (La Sagra) - see above
Grabbed MPEC 2010-U34 - Comet C/2010 S1 (LINEAR) - see above
Grabbed MPEC 2010-U35 - Comet P/2010 T1 (McNaught) - see above
1241Noted that JPL Sentry has removed 2010 TU149 as an impact risk - see above
Noted that NEODyS has reposted 2010 TU149 as an impact risk - see above
Grabbed MPEC 2010-U32 - Daily Orbit Update - see above