Contents  on 20 October '10

Resources:

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 20 October '10

The MPC's NEO Confirmation Page has 6 listings: 1 new, 5 updated

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had one new and five updated listings. Of these, four were "one nighters." So far The Tracking News has counted a total of eleven 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 20 October '10

Minor Planet Electronic Circulars

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


MPEC 2010-U28 - "18:20 UT" - Comet P/2009 SK280 (Spacewatch-Hill)


MPEC 2010-U27 - "15:42 UT" - 2010 UP


MPEC 2010-U26 - "15:33 UT" - 2010 UO


MPEC 2010-U25 - "15:15 UT" - 2010 TX168


<< DOU on 20 Oct. '10 >>  MPEC 2010-U24 - "06:09 UT" - Daily Orbit Update

Observers  on 20 October '10

A total of 22 observing facilities appear in today's MPECs.

CodeObserver / observatory
B17AZT-8 Evpatoria in the Ukraine, 2 in MPEC 2010-U24 -- 65679, 2212
H21Astronomical Research Obs. Westfield in Illinois, 22 in MPECs 2010-U24, 2010-U25, 2010-U26 & 2010-U27 -- 2010 UP, 2010 UO, 2010 TX54, 2010 TX168, 2010 TU149, 2010 TO55, 2010 TM3, 2010 TJ7, 2010 TH19, 2010 TE55, 2010 TC55, 2010 RP80, 2010 RN80, 2010 RM42, 2010 RK43, 2010 RK135, 2010 RG31, 2010 MW, 2010 MF1, 2010 LY63, 2010 LO97, 2007 RU17
B75Betelgeuse Station in Italy, 1 in MPEC 2010-U24 -- 2010 UD
160Castelmartini Obs. in Italy, 4 in MPEC 2010-U24 -- 2010 RN80, 243025, 241370, 237442
703Catalina Sky Survey (CSS) in Arizona, 8 in MPECs 2010-U24 & 2010-U25 -- 2010 UK, 2010 TX168, 2010 TM3, 2002 GM9, 2001 WT1, 25916, 219071, 137062
H26Doc Greiner Research Obs. (DGRO) in Wisconsin, 2 in MPECs 2010-U24 & 2010-U25 -- 2010 TX168, 2010 LO97
J04ESA Optical Ground Station (ESA OGS) in the Canary Islands, 2 in MPEC 2010-U24 -- 2010 TW54, 2010 TG19
J95Great Shefford Obs. in England, 4 in MPECs 2010-U24, 2010-U26 & 2010-U27 -- 2010 UP, 2010 UO, 2010 UK, 2010 UD
951Highworth Obs. in England, 2 in MPECs 2010-U24 & 2010-U25 -- 2010 TX168, 2003 UV11
J28Jaen Obs. in Spain, 1 in MPEC 2010-U24 -- 2010 TN54
704LINEAR in New Mexico, 4 in MPECs 2010-U24 & 2010-U27 -- 2010 UP, 2010 UD, 2004 TC10, 250697
J75La Sagra Obs. in Spain, 2 in MPECs 2010-U24 & 2010-U25 -- 2010 TX168, 17181
844Los Molinos Obs. in Uruguay, 1 in MPEC 2010-U25 -- 2010 TX168
A06Mataro Obs. in Spain, 1 in MPEC 2010-U24 -- 137032
G96Mt. Lemmon Survey (MLS) in Arizona, 2 in MPECs 2010-U24 & 2010-U26 -- 2010 UO, 88959
566NEAT's GEODSS Haleakala telescope in Hawaii, 1 in MPEC 2010-U24 -- 2006 OS9
473Remanzacco Obs. in Italy, 1 in MPEC 2010-U25 -- 2010 TX168
854Sabino Canyon Obs. in Arizona, 2 in MPECs 2010-U24 & 2010-U25 -- 2010 UK, 2010 TX168
H36Sandlot Obs. in Kansas, 3 in MPECs 2010-U25, 2010-U27 & 2010-U28 -- 2010 UP, 2010 TX168, P/2009 SK280
E12Siding Spring Survey (SSS) in New South Wales, 6 in MPEC 2010-U24 -- 2010 UK, 2007 TC66, 2005 WK4, 2005 UO5, 198856, 144901
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2010-U24 -- 2010 TN54
H10Tzec Maun Obs. Mayhill in New Mexico, 1 in MPEC 2010-U25 -- 2010 TX168
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 20 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.
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 UKJPL Sentry15042068-2108332.0e-03-3.83-3.830JPL: "Analysis based on 69 observations spanning 2.5492 days (2010-Oct-17.49652 to 2010-Oct-20.0457)." Diameter approximately 0.014 km. from mean, weighted H=26.8.
NEODyS15042068-2089261.98e-03-3.82-3.830NEODyS: "Based on 71 optical observations (of which 2 are rejected as outliers) from 2010/10/17.497 to 2010/10/20.046."
2010 TU149JPL Sentry1504209815.8e-08-4.83-4.830JPL: "Analysis based on 50 observations spanning 4.8916 days (2010-Oct-13.37823 to 2010-Oct-18.269828)." Diameter approximately 0.290 km. from mean, weighted H=20.4.
NEODyS1504207712.99e-08-4.98-4.980NEODyS: "Based on 50 optical observations (of which 0 are rejected as outliers) from 2010/10/13.379 to 2010/10/18.271."
2010 TW54JPL Sentry15042074-2107132.8e-05-6.16-6.190JPL: "Analysis based on 67 observations spanning 4.9304 days (2010-Oct-11.34885 to 2010-Oct-16.27929)." Diameter approximately 0.011 km. from mean, weighted H=27.5.
NEODyS15042075-209051.57e-06-7.34-7.360NEODyS: "Based on 67 optical observations (of which 0 are rejected as outliers) from 2010/10/11.350 to 2010/10/16.280."
2010 RK135JPL Sentry1504R E M O V E DJPL: Risk listing removed at 0949 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 20 October '10

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

1901Grabbed MPEC 2010-U28 - Comet P/2009 SK280 (Spacewatch-Hill) - see above
1616Grabbed MPEC 2010-U25 - 2010 TX168 - see above
Grabbed MPEC 2010-U26 - 2010 UO - see above
Grabbed MPEC 2010-U27 - 2010 UP - see above
1504Noted that JPL Sentry has removed 2010 RK135 as an impact risk - see above
Noted that JPL Sentry has updated its 2010 TU149 risk assessment - see above
Noted that NEODyS has reposted 2010 TU149 as an impact risk - see above
Noted that JPL Sentry has updated its 2010 TW54 risk assessment - see above
Noted that NEODyS has updated its 2010 TW54 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-U24 - Daily Orbit Update - see above