Contents  on 10 October '09

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 10 October '09

The MPC's NEO Confirmation Page has 2 listings: 2 updated

When last checked at 2302 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had two updated listings. Of these, one was a "one nighter." So far The Tracking News has counted a total of eight 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 10 October '09

Minor Planet Electronic Circulars

As of last check at 2302 UTC, there have been six MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2009-T34 - "11:53 UT" - 2009 TU


MPEC 2009-T33 - "11:50 UT" - 2009 TT


MPEC 2009-T32 - "11:34 UT" - 2009 TS


MPEC 2009-T31 - "11:30 UT" - 2009 TQ


MPEC 2009-T30 - "11:27 UT" - 2009 TP


<< DOU on 10 Oct. '09 >>  MPEC 2009-T29 - "06:08 UT" - Daily Orbit Update

Observers  on 10 October '09

Thirteen observing facilities appear in today's MPECs.

CodeObserver / observatory
703Catalina Sky Survey (CSS) in Arizona, 13 in MPECs 2009-T29, 2009-T31, 2009-T32, 2009-T33 & 2009-T34 -- 2009 TU, 2009 TT, 2009 TS, 2009 TQ, 2009 QH2, 2009 ML1, 30825, 220909, 220124, 20790, 143678, 143487, 3361
J95Great Shefford Obs. in England, 3 in MPECs 2009-T31, 2009-T32 & 2009-T34 -- 2009 TU, 2009 TS, 2009 TQ
704LINEAR in New Mexico, 6 in MPECs 2009-T29 & 2009-T30 -- 2009 TP, 2009 RN, 2002 FB6, 87684, 164121, 138883
J75La Sagra Obs. in Spain, 4 in MPEC 2009-T29 -- 2009 SO103, 30825, 17511, 143678
900Moriyama Obs. in Japan, 1 in MPEC 2009-T32 -- 2009 TS
474Mt. John Obs. in New Zealand, 4 in MPECs 2009-T30, 2009-T31, 2009-T33 & 2009-T34 -- 2009 TU, 2009 TT, 2009 TQ, 2009 TP
557Ondrejov Obs. in the Czech Republic, 1 in MPEC 2009-T29 -- 2009 KC3
D90`K. Hills in England via RAS Obs. Moorook in South Australia, 1 in MPEC 2009-T29 -- 2009 TJ
H36Sandlot Obs. in Kansas, 2 in MPECs 2009-T32 & 2009-T34 -- 2009 TU, 2009 TS
204Schiaparelli Obs. in Italy, 2 in MPEC 2009-T29 -- 2009 SO98, 2009 SO103
E12Siding Spring Survey (SSS) in New South Wales, 10 in MPECs 2009-T29, 2009-T30, 2009-T31 & 2009-T32 -- 2009 TS, 2009 TQ, 2009 TP, 2009 TK, 2009 TJ, 2009 RD1, 2009 HD21, 2002 WP, 212546, 9950
291Spacewatch 1.8m telescope in Arizona, 17 in MPEC 2009-T29 -- 2009 SZ99, 2009 SW19, 2009 SW171, 2009 SV17, 2009 SV, 2009 SU19, 2009 ST, 2009 SM98, 2009 SK104, 2009 SD229, 2009 SC15, 2009 SB15, 2009 SB, 2009 RZ3, 2009 QO8, 2002 AT15, 1995 YR1
926Tenagra II Obs. in Arizona, 12 in MPECs 2009-T29, 2009-T31 & 2009-T32 -- 2009 TS, 2009 TQ, 2009 SX17, 2009 SW, 2009 SP171, 2009 SO103, 2009 SN98, 2009 SM104, 2009 SM, 2009 SL104, 2009 SC100, 2009 QB36
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 10 October '09

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2302 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. Beginning Jan. 22nd, both are also posting impact solutions beyond 100 years for a few 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
2009 TUJPL Sentry16312079-2108211.1e-05-6.22-6.790JPL: "Analysis based on 18 observations spanning .26881 days (2009-Oct-10.18978 to 2009-Oct-10.45859)." Diameter approximately 0.011 km. from mean, weighted H=27.4.
2009 TTJPL Sentry16312040-2089171.6e-07-6.73-6.880JPL: "Analysis based on 13 observations spanning .21848 days (2009-Oct-10.16647 to 2009-Oct-10.38495)." Diameter approximately 0.035 km. from mean, weighted H=25.0.
2009 SD229JPL Sentry1631R E M O V E DJPL: Risk listing removed at 0849 UTC.
NEODyS0800R E M O V E D-
2009 SK104JPL Sentry1631R E M O V E DJPL: Risk listing removed at 0849 UTC.
NEODyS0800R E M O V E D-
2009 SM98NEODyS16322048-205521.59e-08-6.21-6.230NEODyS: "Based on 39 optical observations (of which 0 are rejected as outliers) from 2009/09/24.245 to 2009/10/09.300."
JPL Sentry1631205512.1e-09-7.18-7.180JPL: "Analysis based on 39 observations spanning 15.055 days (2009-Sep-24.24446 to 2009-Oct-09.29921)." Diameter approximately 0.120 km. from mean, weighted H=22.3.
2006 SF281JPL Sentry03062014-21053321.6e-06-6.21-8.110JPL: "Analysis based on 16 observations spanning .02717 days (2006-Sep-30.48927 to 2006-Sep-30.51644)." Diameter approximately 0.020 km. from mean, weighted H=26.2.

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 10 October '09

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

1632Noted that NEODyS has updated its 2009 SM98 risk assessment - see above
1631Noted that JPL Sentry has removed 2009 SD229 as an impact risk - see above
Noted that JPL Sentry has removed 2009 SK104 as an impact risk - see above
Noted that JPL Sentry has updated its 2009 SM98 risk assessment - see above
Noted that JPL Sentry has posted 2009 TT as an impact risk - see above
Noted that JPL Sentry has posted 2009 TU as an impact risk - see above
Grabbed MPEC 2009-T30 - 2009 TP - see above
Grabbed MPEC 2009-T31 - 2009 TQ - see above
Grabbed MPEC 2009-T32 - 2009 TS - see above
Grabbed MPEC 2009-T33 - 2009 TT - see above
Grabbed MPEC 2009-T34 - 2009 TU - see above
0800Noted that NEODyS has removed 2009 SD229 as an impact risk - see above
Noted that NEODyS has removed 2009 SK104 as an impact risk - see above
Grabbed MPEC 2009-T29 - Daily Orbit Update - see above
0306Noted that JPL Sentry has updated its 2006 SF281 risk assessment - see above