The A/CC news pages were inactive 
from late on Sept. 26th until today.

As planned, today is the first day that the A/CC news pages have updated since late Sunday, September 26th. All interim MPECs with observation credits now appear on their own respective daily news pages. Data posted here today for radar astrometry was probably first available sometime on September 28th or very early on the 29th UTC, and JPL's first risk ratings for 2010 SG13 and 2010 SK13 were likely posted by JPL late yesterday. Except for a break in NEOCP continuity, and unless risk-rated objects were both posted and removed during the three-plus days, no other data collection was affected by this down time in A/CC's reporting.


Contents  on 30 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 30 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 0135 UTC when the database was dated 28 Sept.

NEOCP Activity  on 30 September '10

The MPC's NEO Confirmation Page has 7 listings: 2 new, 5 updated

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

New MPECs  on 30 September '10

Minor Planet Electronic Circulars

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


MPEC 2010-S72 - "19:12 UT" - 2010 SO16


MPEC 2010-S71 - "16:33 UT" - 2010 SV15


MPEC 2010-S70 - "16:30 UT" - 2010 SU15


MPEC 2010-S69 - "14:46 UT" - 2010 SL15


MPEC 2010-S68 - "14:39 UT" - 2010 SK15


MPEC 2010-S67 - "14:35 UT" - 2010 SJ15


MPEC 2010-S66 - "14:32 UT" - 2010 SH15


MPEC 2010-S65 - "14:29 UT" - 2010 SG15


MPEC 2010-S64 - "14:25 UT" - 2010 SF15


<< DOU on 30 Sept. '10 >>  MPEC 2010-S63 - "06:06 UT" - Daily Orbit Update

Observers  on 30 September '10

A total of 23 observing facilities appear in today's MPECs.

CodeObserver / observatory
251Arecibo in Puerto Rico, 1 in radar -- 154029
H21Astronomical Research Obs. Westfield in Illinois, 11 in MPECs 2010-S63, 2010-S64, 2010-S65 & 2010-S68 -- 2010 SK15, 2010 SG15, 2010 SF15, 2010 SA12, 2010 RM42, 2010 RL43, 2010 RK64, 2010 RJ4, 2010 PS66, 2010 OD101, 2010 OB
160Castelmartini Obs. in Italy, 3 in MPEC 2010-S63 -- 2010 MR87, 2010 MF1, 154029
703Catalina Sky Survey (CSS) in Arizona, 3 in MPEC 2010-S63 -- 2007 TY18, 29075, 19764
448Desert Moon Obs. in New Mexico, 9 in MPEC 2010-S63 -- 2010 SJ, 2010 RK64, 2010 RG137, 2010 RC130, 2010 RC12, 2010 QD2, 2010 NW117, 2003 TX7, 153814
E10Faulkes Telescope South in New South Wales, 2 in MPECs 2010-S63 & 2010-S72 -- 2010 SO16, 2010 OC127
J95Great Shefford Obs. in England, 2 in MPEC 2010-S63 -- 2010 SK13, 2010 RC130
704LINEAR in New Mexico, 5 in MPECs 2010-S63 & 2010-S68 -- 2010 SK15, 2010 SD13, 2007 RV17, 66008, 5011
J75La Sagra Obs. in Spain, 5 in MPEC 2010-S63 -- 2010 RP80, 2010 KY39, 19764, 4486, 2212
B33Libbiano Obs. in Italy, 1 in MPEC 2010-S63 -- 2010 SX11
J59Linceo Obs. in Spain, 2 in MPEC 2010-S63 -- 143381, 7336
G96Mt. Lemmon Survey (MLS) in Arizona, 13 in MPECs 2010-S63, 2010-S64, 2010-S65, 2010-S66, 2010-S67, 2010-S68, 2010-S69, 2010-S70 & 2010-S71 -- 2010 SX11, 2010 SV15, 2010 SU15, 2010 SL15, 2010 SK15, 2010 SJ15, 2010 SH15, 2010 SG15, 2010 SF15, 1998 FN9, 65717, 230118, 162913
F51Pan-STARRS 1 in Hawaii, 1 in MPEC 2010-S63 -- 2010 RJ64
A53Peschiera del Garda Obs. in Italy, 5 in MPEC 2010-S63 -- 2010 RP80, 2010 RC130, 2010 LY63, 2000 TJ1, 152952
D90`Kevin Hills in England via RAS Obs. Moorook in South Australia, 1 in MPEC 2010-S63 -- 2010 SX11
473Remanzacco Obs. in Italy, 3 in MPEC 2010-S63 -- 2010 SL13, 2010 SH13, 2010 SG13
H36Sandlot Obs. in Kansas, 3 in MPECs 2010-S63 & 2010-S66 -- 2010 SH15, 2010 SC, 2010 SA12
E12Siding Spring Survey (SSS) in New South Wales, 5 in MPECs 2010-S63 & 2010-S72 -- 2010 SO16, 2010 RO82, 2010 RK64, 2010 OQ1, 2010 OC127
510Siegen Obs. in Germany, 1 in MPEC 2010-S63 -- 2010 LY63
291Spacewatch 1.8m telescope in Arizona, 3 in MPEC 2010-S63 -- 2010 SK13, 2010 SH13, 2010 OB101
H10Tzec Maun Obs. Mayhill in New Mexico, 1 in MPEC 2010-S68 -- 2010 SK15
A48Verona Obs. in Italy, 4 in MPEC 2010-S63 -- 2010 RN80, 2010 RC130, 2010 MR87, 2010 LY63
C51WISE in Earth polar orbit, 1 in MPEC 2010-S72 -- 2010 SO16
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 30 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 SU15JPL Sentry19062013-2109623.6e-08-8.60-9.300JPL: "Analysis based on 12 observations spanning .13293 days (2010-Sep-30.25135 to 2010-Sep-30.38428)." Diameter approximately 0.012 km. from mean, weighted H=27.5.
2010 SJ15JPL Sentry17442014-2039112.1e-09-5.91-6.140JPL: "Analysis based on 15 observations spanning 1.0654 days (2010-Sep-29.29976 to 2010-Sep-30.36515)." Diameter approximately 0.133 km. from mean, weighted H=22.0.
2010 SH15JPL Sentry17442014-2108581.4e-07-4.90-5.060JPL: "Analysis based on 11 observations spanning .97413 days (2010-Sep-29.26958 to 2010-Sep-30.24371)." Diameter approximately 0.121 km. from mean, weighted H=22.3.
2010 SF15JPL Sentry17442012-2106371.1e-08-5.23-5.320JPL: "Analysis based on 17 observations spanning 1.0088 days (2010-Sep-29.18778 to 2010-Sep-30.196598)." Diameter approximately 0.183 km. from mean, weighted H=21.4.
2010 SK13JPL Sentry14372080-208431.1e-05-6.10-6.240JPL #2 for the day: "Analysis based on 22 observations spanning 1.5346 days (2010-Sep-28.30637 to 2010-Sep-29.840957)." Diameter approximately 0.011 km. from mean, weighted H=27.5.
NEODyS14372080-208431.23e-05-6.05-6.200NEODyS: "Based on 22 optical observations (of which 0 are rejected as outliers) from 2010/09/28.307 to 2010/09/29.842."
2010 SG13JPL Sentry14372021-2100361.7e-08-3.63-4.350JPL #2 for the day: "Analysis based on 14 observations spanning 2.1205 days (2010-Sep-27.10646 to 2010-Sep-29.22699)." Diameter approximately 0.875 km. from mean, weighted H=17.9.
NEODyS14372012-20901193.22e-08-3.13-3.940NEODyS: "Based on 14 optical observations (of which 0 are rejected as outliers) from 2010/09/27.107 to 2010/09/29.228."

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 30 September '10

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

2127Grabbed MPEC 2010-S72 - 2010 SO16 - see above
1906Noted that JPL Sentry has posted 2010 SU15 as an impact risk - see above
1744Noted that JPL Sentry has posted 2010 SF15 as an impact risk - see above
Noted that JPL Sentry has posted 2010 SH15 as an impact risk - see above
Noted that JPL Sentry has posted 2010 SJ15 as an impact risk - see above
Grabbed MPEC 2010-S70 - 2010 SU15 - see above
Grabbed MPEC 2010-S71 - 2010 SV15 - see above
1528Grabbed MPEC 2010-S67 - 2010 SJ15 - see above
Grabbed MPEC 2010-S68 - 2010 SK15 - see above
Grabbed MPEC 2010-S69 - 2010 SL15 - see above
1437Noted that JPL Sentry has updated its 2010 SG13 risk assessment - see above
Noted that NEODyS has posted 2010 SG13 as an impact risk - see above
Noted that JPL Sentry has updated its 2010 SK13 risk assessment - see above
Noted that NEODyS has posted 2010 SK13 as an impact risk - see above
Grabbed MPEC 2010-S63 - Daily Orbit Update - see above
Grabbed MPEC 2010-S64 - 2010 SF15 - see above
Grabbed MPEC 2010-S65 - 2010 SG15 - see above
Grabbed MPEC 2010-S66 - 2010 SH15 - see above
0135Noted that JPL Sentry has posted 2010 SG13 as an impact risk - see above
Noted that JPL Sentry has posted 2010 SK13 as an impact risk - see above
Noted Radar Astrometry database update - see above