Contents  on 9 October '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 9 October '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 2200 UTC when the database was dated 9 Oct.

NEOCP Activity  on 9 October '08

The MPC's NEO Confirmation Page has 12 listings: 1 new, 11 updated

When last checked at 2358 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had one new and eleven updated listings. Of these, ten were "one nighters." So far The Tracking News has counted a total of 23 objects listed on the NEOCP at some point today.

New MPECs  on 9 October '08

Minor Planet Electronic Circulars

As of last check at 2358 UTC, there have been ten MPECs issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2008-T110 - "16:47 UT" - 2008 TS10


MPEC 2008-T109 - "16:43 UT" - 2008 TR10


MPEC 2008-T108 - "16:40 UT" - 2008 TQ10


MPEC 2008-T107 - "16:35 UT" - 2008 TP10


MPEC 2008-T106 - "16:31 UT" - 2008 TO10


MPEC 2008-T105 - "16:24 UT" - 2008 TM10


<< DOU on 9 Oct. '08 >>  MPEC 2008-T104 - "06:10 UT" - Daily Orbit Update


MPEC 2008-T103 - "04:48 UT" - 2008 TY9


MPEC 2008-T102 - "04:26 UT" - 2008 TX9


MPEC 2008-T101 - "00:35 UT" - 2008 TN9

Observers  on 9 October '08

A total of 24 observing facilities appear in today's MPECs.

CodeObserver / observatory
H55Astronomical Research Obs. (ARO) in Illinois, 28 in MPECs 2008-T104, 2008-T106, 2008-T107, 2008-T108 & 2008-T109 -- 2008 TR10, 2008 TQ10, 2008 TP10, 2008 TO10, 2008 SW1, 2008 SV7, 2008 ST7, 2008 ST1, 2008 ST, 2008 SR, 2008 SQ7, 2008 SQ, 2008 SP7, 2008 SO1, 2008 SO, 2008 SE, 2008 RZ24, 2008 RY24, 2008 RT26, 2008 RT, 2008 RR24, 2008 QY, 2008 QW11, 2008 QU3, 2008 OX8, 2008 JZ7, 2005 BE2, 2001 VB76
B09Capannoli Obs. in Italy, 2 in MPEC 2008-T104 -- 2008 SQ1, 2008 SE
703Catalina Sky Survey (CSS) in Arizona, 18 in MPEC 2008-T104 -- 2008 TZ, 2008 TA1, 2008 SO, 2008 QS11, 2008 QC, 2008 NU, 2008 JZ7, 2005 TZ51, 2002 SS41, 2001 SG276, 1998 SJ70, 162900, 153306, 144901, 141851, 137799, 4183, 1865
448Desert Moon Obs. in New Mexico, 4 in MPEC 2008-T104 -- 2008 SC85, 2008 RZ24, 2008 HO3, 2000 FL1
253Goldstone DSS-14 70m antenna in southern California, 1 in radar -- 164400
J95Great Shefford Obs. in England, 6 in MPECs 2008-T101, 2008-T102, 2008-T103, 2008-T106, 2008-T108 & 2008-T109 -- 2008 TY9, 2008 TX9, 2008 TR10, 2008 TQ10, 2008 TO10, 2008 TN9
379Hamamatsu-Yuto Obs. in Japan, 3 in MPEC 2008-T104 -- 2008 SE, 2003 GW, 4179
704LINEAR in New Mexico, 16 in MPECs 2008-T103, 2008-T104, 2008-T105 & 2008-T106 -- 2008 TY9, 2008 TO10, 2008 TM10, 2008 TF4, 2008 TE4, 2008 TD4, 2008 TC4, 2008 MR1, 2005 TZ51, 2004 SB56, 190119, 18882, 17511, 168044, 141851, 137032
H01Magdalena Ridge Obs. (MRO) in New Mexico, 6 in MPECs 2008-T101, 2008-T102, 2008-T107, 2008-T108, 2008-T109 & 2008-T110 -- 2008 TX9, 2008 TS10, 2008 TR10, 2008 TQ10, 2008 TP10, 2008 TN9
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2008-T104 -- 190208
B67Mirasteilas Obs. in Switzerland, 5 in MPEC 2008-T104 -- 2008 SP7, 2008 SE, 153306, 7358, 7335
900Moriyama Obs. in Japan, 1 in MPEC 2008-T105 -- 2008 TM10
G96Mt. Lemmon Survey (MLS) in Arizona, 17 in MPECs 2008-T101, 2008-T102, 2008-T104, 2008-T105, 2008-T107, 2008-T108, 2008-T109 & 2008-T110 -- 2008 TX9, 2008 TS10, 2008 TR10, 2008 TQ10, 2008 TP10, 2008 TN9, 2008 TM10, 2008 TA, 2008 SV11, 2008 SP7, 2008 QS11, 2008 PL3, 2008 DJ5, 2005 TR15, 140288, 4183, 1980
J93Mt. Tuffley Obs. in England, 5 in MPEC 2008-T104 -- 185851, 16960, 8567, 1627, 1620
J69North Obs. in England, 1 in MPEC 2008-T104 -- 16960
J41Raheny Obs. in Ireland, 2 in MPEC 2008-T104 -- 185851, 137032
854Sabino Canyon Obs. in Arizona, 2 in MPECs 2008-T103 & 2008-T106 -- 2008 TY9, 2008 TO10
H36Sandlot Obs. in Kansas, 1 in MPEC 2008-T106 -- 2008 TO10
E12Siding Spring Survey (SSS) in New South Wales, 4 in MPEC 2008-T104 -- 2008 TA4, 2008 SR1, 2008 SJ82, 11405
691Spacewatch 0.9m telescope in Arizona, 5 in MPEC 2008-T104 -- 2008 SW11, 2008 RQ24, 2001 SG10, 2001 CK42, 162215
291Spacewatch 1.8m telescope in Arizona, 10 in MPECs 2008-T104, 2008-T108 & 2008-T109 -- 2008 TZ3, 2008 TR10, 2008 TQ10, 2008 TG, 2008 ST7, 2008 SO, 2008 SH82, 2008 RG98, 2008 QC, 162215
6735Jim Young via Table Mtn. Obs. in southern California, 1 in MPEC 2008-T106 -- 2008 TO10
A98Taurus-1 Obs. in Belarus, 4 in MPEC 2008-T104 -- 185851, 16960, 137032, 1620
A92Urseanu Obs. in Romania, 2 in MPEC 2008-T104 -- 164400, 137032
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 9 October '08

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2358 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 TS10JPL Sentry20452040-2103542.1e-05-6.88-7.580JPL: "Analysis based on 15 observations spanning 1.1091 days (2008-Oct-08.36174 to 2008-Oct-09.47079)." Diameter approximately 0.006 km. from mean, weighted H=28.7.
2008 TR10JPL Sentry20452015-2097351.7e-08-5.36-6.130JPL: "Analysis based on 27 observations spanning 1.0788 days (2008-Oct-08.36066 to 2008-Oct-09.43949)." Diameter approximately 0.270 km. from mean, weighted H=20.5.
2008 TP10JPL Sentry20452085-209323.0e-10-8.24-8.450JPL: "Analysis based on 20 observations spanning 1.0747 days (2008-Oct-08.33519 to 2008-Oct-09.40987)." Diameter approximately 0.116 km. from mean, weighted H=22.3.
2008 TC4JPL Sentry1454R E M O V E DJPL: Risk listing removed at 1112 UTC.
2008 TZ3JPL Sentry14542012-21081011.4e-06-2.85-3.340JPL: "Analysis based on 18 observations spanning 2.1431 days (2008-Oct-06.33267 to 2008-Oct-08.47578)." Diameter approximately 0.305 km. from mean, weighted H=20.2.
NEODyS14542012-2089185.28e-07-3.11-3.520NEODyS: "Based on 18 optical observations (of which 0 are rejected as outliers) from 2008/10/06.333 to 2008/10/08.477."
2008 SH82JPL Sentry1454208111.8e-07-5.09-5.090JPL: "Analysis based on 44 observations spanning 11.893 days (2008-Sep-26.21299 to 2008-Oct-08.1063)." Diameter approximately 0.210 km. from mean, weighted H=21.0.
NEODyS1454208111.35e-07-5.25-5.250NEODyS: "Based on 44 optical observations (of which 0 are rejected as outliers) from 2008/09/26.214 to 2008/10/08.107."
2008 ST7JPL Sentry14542073-2108384.8e-05-4.22-4.620JPL: "Analysis based on 91 observations spanning 14.161 days (2008-Sep-24.29993 to 2008-Oct-08.46109)." Diameter approximately 0.051 km. from mean, weighted H=24.1.
NEODyS14542062-2089121.84e-06-5.47-5.760NEODyS: "Based on 97 optical observations (of which 6 are rejected as outliers) from 2008/09/24.301 to 2008/10/08.462."
2008 STJPL Sentry1454204711.0e-08-9.11-9.110JPL: "Analysis based on 44 observations spanning 7.1120 days (2008-Sep-22.16113 to 2008-Sep-29.27316)." Diameter approximately 0.013 km. from mean, weighted H=27.1.

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 9 October '08

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

2200Noted Radar Astrometry database addition - see above
2045Noted that JPL Sentry has posted 2008 TP10 as an impact risk - see above
Noted that JPL Sentry has posted 2008 TR10 as an impact risk - see above
Noted that JPL Sentry has posted 2008 TS10 as an impact risk - see above
1701Grabbed MPEC 2008-T105 - 2008 TM10 - see above
Grabbed MPEC 2008-T106 - 2008 TO10 - see above
Grabbed MPEC 2008-T107 - 2008 TP10 - see above
Grabbed MPEC 2008-T108 - 2008 TQ10 - see above
Grabbed MPEC 2008-T109 - 2008 TR10 - see above
Grabbed MPEC 2008-T110 - 2008 TS10 - see above
1454Noted that JPL Sentry has updated its 2008 SH82 risk assessment - see above
Noted that NEODyS has updated its 2008 SH82 risk assessment - see above
Noted that JPL Sentry has updated its 2008 ST 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 JPL Sentry has removed 2008 TC4 as an impact risk - see above
Noted that JPL Sentry has updated its 2008 TZ3 risk assessment - see above
Noted that NEODyS has updated its 2008 TZ3 risk assessment - see above
Grabbed MPEC 2008-T104 - Daily Orbit Update - see above
0520Grabbed MPEC 2008-T103 - 2008 TY9 - see above
0431Grabbed MPEC 2008-T102 - 2008 TX9 - see above
0058Grabbed MPEC 2008-T101 - 2008 TN9 - see above