Contents  on 30 September '08

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 '08

Radar observation of one object

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


Data addition noted at 2249 UTC when the database was dated 30 Sept.

NEOCP Activity  on 30 September '08

The MPC's NEO Confirmation Page has 8 listings: 1 new, 7 updated

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

New MPECs  on 30 September '08

Minor Planet Electronic Circulars

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


MPEC 2008-S96 - "18:51 UT" - Comet C/2008 S3 (Boattini)


MPEC 2008-S95 - "18:07 UT" - 2008 SY148


MPEC 2008-S94 - "18:03 UT" - 2008 SX148


<< DOU on 30 Sept. '08 >>  MPEC 2008-S93 - "06:08 UT" - Daily Orbit Update

Observers  on 30 September '08

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

CodeObserver / observatory
B37Ametlla del Valles Obs. in Spain, 1 in MPEC 2008-S93 -- 2008 SQ1
H55Astronomical Research Obs. (ARO) in Illinois, 17 in MPEC 2008-S93 -- 2008 SZ1, 2008 SW1, 2008 SV7, 2008 ST7, 2008 ST1, 2008 SQ7, 2008 SQ, 2008 SP7, 2008 SO, 2008 SN1, 2008 SE85, 2008 SE, 2008 SD85, 2008 RZ24, 2008 RT26, 2008 RT, 2008 QW11
A74Bergen-Enkheim Obs. in Germany, 1 in MPEC 2008-S93 -- 2008 ST7
I77CEAMIG-REA in Brazil, 1 in MPEC 2008-S93 -- 2008 QS11
B09Capannoli Obs. in Italy, 3 in MPEC 2008-S93 -- 2008 SQ1, 2008 SE, 2008 NU
B66Casasco Obs. in Italy, 1 in MPEC 2008-S93 -- 185851
703Catalina Sky Survey (CSS) in Arizona, 6 in MPEC 2008-S93 -- 2008 SP7, 2008 QC, 2005 RD34, 162510, 108906, 8567
850Cordell-Lorenz Obs. in Tennessee, 1 in MPEC 2008-S96 -- C/2008 S3
448Desert Moon Obs. in New Mexico, 6 in MPEC 2008-S93 -- 2008 SX7, 2008 SV11, 2008 SO, 2008 RJ1, 2008 RE80, 2008 PH9
639Dresden Obs. in Germany, 1 in MPEC 2008-S93 -- 2003 GW
J27El Guijo Obs. in Spain, 2 in MPEC 2008-S93 -- 2008 SE, 2001 UZ16
A27Eridanus Obs. in Germany, 4 in MPEC 2008-S93 -- 185851, 16960, 164400, 1620
F652Lothar Kurtze in Germany via Faulkes Telescope North in Hawaii, 1 in MPEC 2008-S93 -- 2008 SF8
253Goldstone DSS-14 70m antenna in southern California, 1 in radar -- 137032
046Klet Obs. in the Czech Republic, 5 in MPEC 2008-S93 -- 2008 SR1, 2008 SQ1, 2008 SQ, 2008 SP7, 2008 SE
704LINEAR in New Mexico, 25 in MPECs 2008-S93 & 2008-S95 -- 2008 SY148, 2008 SX7, 2008 SW1, 2008 RT, 2008 RE80, 2008 QT3, 2008 LW8, 2007 TE66, 2006 GZ, 2005 RD34, 2004 XN44, 2001 SG10, 96744, 16834, 163000, 162900, 162635, 162510, 140288, 137799, 11398, 108906, 4179, 2201, 1917
560Madonna di Dossobuono Obs. in Italy, 4 in MPEC 2008-S93 -- 2005 TZ51, 2002 VV17, 164400, 137032
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2008-S93 -- 2007 TD66
G96Mt. Lemmon Survey (MLS) in Arizona, 10 in MPECs 2008-S93, 2008-S94 & 2008-S96 -- 2008 SX148, 2008 SF8, C/2008 S3, 2003 CN17, 2001 XW266, 1999 RD32, 88188, 87311, 52689, 5143
A53Peschiera del Garda Obs. in Italy, 1 in MPEC 2008-S93 -- 2003 GW
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 5 in MPEC 2008-S93 -- 2008 SQ1, 2008 SE, 2005 TZ51, 2002 VV17, 1998 SJ70
6581Dave Balam via Plaskett 1.8m Telescope in British Columbia, 1 in MPEC 2008-S94 -- 2008 SX148
H06RAS Obs. Mayhill in New Mexico, 1 in MPEC 2008-S96 -- C/2008 S3
H36Sandlot Obs. in Kansas, 2 in MPECs 2008-S95 & 2008-S96 -- 2008 SY148, C/2008 S3
E12Siding Spring Survey (SSS) in New South Wales, 2 in MPEC 2008-S93 -- 2008 KZ5, 2008 EC69
291Spacewatch 1.8m telescope in Arizona, 14 in MPECs 2008-S93 & 2008-S94 -- 2008 SX148, 2008 SW11, 2008 SV11, 2008 ST7, 2008 SH82, 2008 RK1, 2008 RJ1, 2008 RH1, 2008 RG1, 2006 UK, 2005 SH19, 1998 QE2, 1997 US2, 162215
673Table Mtn. Obs. in southern California, 1 in MPEC 2008-S96 -- C/2008 S3
6735Jim Young via Table Mtn. Obs. in southern California, 1 in MPEC 2008-S95 -- 2008 SY148
H47Vicksburg Obs. in Mississippi, 1 in MPEC 2008-S93 -- 4179
D89Yamagata Obs. in Japan, 1 in MPEC 2008-S93 -- 2008 QS11
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 30 September '08

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.
Note that the time horizon for JPL is 100 years from today and for NEODyS is usually the year 2090.
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
2008 SH148NEODyS15162011-2087664.42e-07-6.72-7.530NEODyS: "Based on 11 optical observations (of which 0 are rejected as outliers) from 2008/09/29.190 to 2008/09/29.292."
JPL Sentry02152011-21071891.0e-06-6.43-7.120JPL: "Analysis based on 11 observations spanning .10211 days (2008-Sep-29.18897 to 2008-Sep-29.29108)." Diameter approximately 0.020 km. from mean, weighted H=26.1.
2008 SE85JPL Sentry15152013-2107396.5e-08-3.72-3.780JPL: "Analysis based on 20 observations spanning .95911 days (2008-Sep-28.44782 to 2008-Sep-29.40693)." Diameter approximately 0.390 km. from mean, weighted H=19.7.
NEODyS15152011-20901031.96e-07-3.02-3.270NEODyS: "Based on 20 optical observations (of which 0 are rejected as outliers) from 2008/09/28.449 to 2008/09/29.408."
2008 SH82NEODyS15152032-2088142.0e-07-4.85-5.400NEODyS: "Based on 18 optical observations (of which 0 are rejected as outliers) from 2008/09/26.214 to 2008/09/29.261."
2008 SV11NEODyS22492034-2089139.07e-08-3.41-3.670NEODyS #2 for the day: "Based on 44 optical observations (of which 0 are rejected as outliers) from 2008/09/25.263 to 2008/09/30.378."
JPL Sentry21162009-2085111.4e-07-3.00-3.330JPL: "Analysis based on 44 observations spanning 5.1147 days (2008-Sep-25.26245 to 2008-Sep-30.37718)." Diameter approximately 0.756 km. from mean, weighted H=18.3.
2008 ST7JPL Sentry15152073-2102472.7e-05-4.37-5.100JPL: "Analysis based on 48 observations spanning 5.0264 days (2008-Sep-24.29993 to 2008-Sep-29.32635)." Diameter approximately 0.053 km. from mean, weighted H=24.0.
NEODyS15152050-208994.18e-06-5.08-5.410NEODyS: "Based on 51 optical observations (of which 6 are rejected as outliers) from 2008/09/24.301 to 2008/09/29.327."
2008 KN11NEODyS1931204612.32e-07-5.62-5.620NEODyS: "Based on 132 optical observations (of which 0 are rejected as outliers) from 2008/05/30.335 to 2008/06/21.154."

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 '08

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

2249Noted that NEODyS has updated its 2008 SV11 risk assessment - see above
Noted Radar Astrometry database addition - see above
2116Noted that JPL Sentry has updated its 2008 SV11 risk assessment - see above
1931Noted that NEODyS has updated its 2008 KN11 risk assessment - see above
1929Grabbed MPEC 2008-S96 - Comet C/2008 S3 (Boattini) - see above
1858Grabbed MPEC 2008-S94 - 2008 SX148 - see above
Grabbed MPEC 2008-S95 - 2008 SY148 - see above
1516Grabbed MPEC 2008-S93 - Daily Orbit Update - see above
1515Noted that JPL Sentry has updated its 2008 SE85 risk assessment - see above
Noted that NEODyS has posted 2008 SE85 as an impact risk - see above
Noted that NEODyS has posted 2008 SH148 as an impact risk - see above
Noted that NEODyS has updated its 2008 SH82 risk assessment - see above
Noted that JPL Sentry has updated its 2008 ST7 risk assessment - see above
Noted that NEODyS has updated its 2008 ST7 risk assessment - see above
Noted that NEODyS has updated its 2008 SV11 risk assessment - see above
0215Noted that JPL Sentry has posted 2008 SH148 as an impact risk - see above