Contents  on 13 September '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.

Radar Astrometry  on 13 September '10

Radar observation of one object

The JPL Solar System Dynamics Group Radar Astrometry database has added or updated the following small-body radar observing work:


Data update noted at 2215 UTC when the database was dated 13 Sept.

NEOCP Activity  on 13 September '10

The MPC's NEO Confirmation Page has 1 listing: 1 updated

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had one updated listing. So far The Tracking News has counted a total of twelve listings on the NEOCP at some point today.

New MPECs  on 13 September '10

Minor Planet Electronic Circulars

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


MPEC 2010-R108 - "21:14 UT" - Comets C/2010 G4, 2010 G5, 2010 G6, 2010 H6 (SOHO)


MPEC 2010-R107 - "12:45 UT" - 2010 RO82


<< DOU on 13 Sept. '10 >>  MPEC 2010-R106 - "06:10 UT" - Daily Orbit Update


MPEC 2010-R105 - "04:56 UT" - 2010 RN82


MPEC 2010-R104 - "04:24 UT" - 2010 RM82


MPEC 2010-R103 - "00:14 UT" - 2010 RT80


MPEC 2010-R102 - "00:01 UT" - Comets C/2010 F5, 2010 F6, 2010 F7, 2010 F8, 2010 F9, 2010 F10, 2010 F11

Observers  on 13 September '10

A total of 29 observing facilities appear in today's MPECs.

CodeObserver / observatory
J32Aljaraque Obs. in Spain, 1 in MPEC 2010-R106 -- 152558
H21Astronomical Research Obs. Westfield in Illinois, 6 in MPECs 2010-R103 & 2010-R106 -- 2010 RX45, 2010 RT80, 2010 RS3, 2010 RJ43, 2010 PS65, 2010 PR66
I77CEAMIG-REA in Brazil, 2 in MPECs 2010-R104 & 2010-R105 -- 2010 RN82, 2010 RM82
160Castelmartini Obs. in Italy, 23 in MPEC 2010-R106 -- 2010 RN80, 2010 PR10, 2010 PM10, 2007 VG189, 2005 GE59, 2000 PQ27, 1997 GL3, 66146, 65679, 243147, 242211, 237442, 23187, 19764, 153842, 152952, 152558, 143381, 138847, 4660, 4197, 2212, 2100
703Catalina Sky Survey (CSS) in Arizona, 2 in MPEC 2010-R106 -- 7336, 4183
G58Chabot Obs. in northern California, 5 in MPEC 2010-R106 -- 2010 RT3, 2010 RG42, 2010 RF, 2010 ON101, 2009 PY
A77Chante-Perdrix Obs. in France, 1 in MPEC 2010-R106 -- 2010 RX30
B55Comeglians Obs. in Italy, 1 in MPEC 2010-R104 -- 2010 RM82
H26Doc Greiner Research Obs. (DGRO) in Wisconsin, 2 in MPECs 2010-R103 & 2010-R106 -- 2010 RT80, 2010 RJ53
J04ESA Optical Ground Station (ESA OGS) in the Canary Islands, 4 in MPECs 2010-R106 & 2010-R107 -- 2010 RT80, 2010 RS80, 2010 RR80, 2010 RO82
734Farpoint Obs. in Kansas, 2 in MPECs 2010-R103 & 2010-R106 -- 2010 RT80, 2010 RQ64
157Frasso Sabino Obs. in Italy, 1 in MPEC 2010-R106 -- 2010 MR87
252Goldstone DSS-13 34m antenna in southern California, 1 in radar -- 2010 AL30
253Goldstone DSS-14 70m antenna in southern California, 1 in radar -- 2010 AL30
J95Great Shefford Obs. in England, 3 in MPECs 2010-R103, 2010-R104 & 2010-R106 -- 2010 RT80, 2010 RO80, 2010 RM82
379Hamamatsu-Yuto Obs. in Japan, 4 in MPEC 2010-R106 -- 1997 GL3, 19764, 152558, 2212
046Klet Obs. in the Czech Republic, 1 in MPEC 2010-R106 -- 2010 RK43
704LINEAR in New Mexico, 6 in MPECs 2010-R103, 2010-R104 & 2010-R106 -- 2010 RT80, 2010 RQ64, 2010 RM82, 2007 TY18, 138404, 5786
H13Lenomiya Obs. in Arizona, 1 in MPEC 2010-R106 -- 2010 RL43
G96Mt. Lemmon Survey (MLS) in Arizona, 2 in MPEC 2010-R106 -- 31221, 152558
D90.Cristovao Jacques in Brazil via RAS Obs. Moorook in South Australia, 1 in MPEC 2010-R105 -- 2010 RN82
D90`Kevin Hills in England via RAS Obs. Moorook in South Australia, 3 in MPECs 2010-R105 & 2010-R106 -- 2010 RN82, 2010 RJ53, 2010 QE2
C495COR2-A instrument (5) aboard STEREO-A in heliocentric orbit leading Earth, 1 in MPEC 2010-R108 -- C/2010 G4
C505COR2-B instrument (5) aboard STEREO-B in heliocentric orbit trailing Earth, 1 in MPEC 2010-R108 -- C/2010 G4
E12Siding Spring Survey (SSS) in New South Wales, 4 in MPECs 2010-R103, 2010-R105, 2010-R106 & 2010-R107 -- 2010 RU30, 2010 RT80, 2010 RO82, 2010 RN82
2492LASCO Coronagraph 2 (SOHO C2) aboard the Solar & Heliospheric Obs. (SOHO) in Earth-Sun L1 HALO orbit, 10 in MPECs 2010-R102 & 2010-R108 -- C/2010 H6, C/2010 G6, C/2010 G5, C/2010 G4, C/2010 F9, C/2010 F8, C/2010 F7, C/2010 F6, C/2010 F11, C/2010 F10
2493LASCO Coronagraph 3 (SOHO C3) aboard the Solar & Heliospheric Obs. (SOHO) in Earth-Sun L1 HALO orbit, 5 in MPECs 2010-R102 & 2010-R108 -- C/2010 G4, C/2010 F9, C/2010 F6, C/2010 F5, C/2010 F10
587Sormano Obs. in Italy, 1 in MPEC 2010-R106 -- 2010 RJ53
291Spacewatch 1.8m telescope in Arizona, 8 in MPEC 2010-R106 -- 2010 RT3, 2010 RT11, 2010 RJ64, 2010 RD31, 2010 PU66, 2010 ON101, 2010 OL101, 2008 EE68
6734Mike Hicks via Table Mtn. Obs. in southern California, 1 in MPEC 2010-R103 -- 2010 RT80
H47Vicksburg Obs. in Mississippi, 2 in MPEC 2010-R106 -- 2007 TY18, 1997 GL3
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 13 September '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 RM80NEODyS15342085-209024.68e-07-8.07-8.080NEODyS: "Based on 23 optical observations (of which 0 are rejected as outliers) from 2010/09/11.286 to 2010/09/12.321."
2010 RX30JPL Sentry15342063-210335.2e-07-7.43-7.460JPL: "Analysis based on 91 observations spanning 2.9582 days (2010-Sep-05.43059 to 2010-Sep-08.388761)." Diameter approximately 0.012 km. from mean, weighted H=27.2.
2010 PS65JPL Sentry1534210212.5e-09-8.80-8.800JPL: "Analysis based on 61 observations spanning 30.092 days (2010-Aug-13.29423 to 2010-Sep-12.386159)." Diameter approximately 0.039 km. from mean, weighted H=24.7.
2008 EM68JPL Sentry03052011-210811711.6e-05-5.47-6.080JPL: "Analysis based on 12 observations spanning .11019 days (2008-Mar-08.25164 to 2008-Mar-08.36183)." Diameter approximately 0.010 km. from mean, weighted H=27.7.

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 13 September '10

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

2215Noted Radar Astrometry database update - see above
2130Grabbed MPEC 2010-R108 - Comets C/2010 G4, 2010 G5, 2010 G6, 2010 H6 (SOHO) - see above
1534Noted that JPL Sentry has updated its 2010 PS65 risk assessment - see above
Noted that NEODyS has posted 2010 RM80 as an impact risk - see above
Noted that JPL Sentry has updated its 2010 RX30 risk assessment - see above
Grabbed MPEC 2010-R106 - Daily Orbit Update - see above
Grabbed MPEC 2010-R107 - 2010 RO82 - see above
0505Grabbed MPEC 2010-R104 - 2010 RM82 - see above
Grabbed MPEC 2010-R105 - 2010 RN82 - see above
0305Noted that JPL Sentry has updated its 2008 EM68 risk assessment - see above
Grabbed MPEC 2010-R102 - Comets C/2010 F5, 2010 F6, 2010 F7, 2010 F8, 2010 F9, 2010 F10, 2010 F11 - see above
Grabbed MPEC 2010-R103 - 2010 RT80 - see above