Contents  on 5 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.

NEOCP Activity  on 5 October '08

The MPC's NEO Confirmation Page has 3 listings: 1 new, 2 updated

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

To learn how observers use the NEOCP, see the Practical guide on how to observe NEOCP object by Birtwhistle et al. at Suno Observatory.

New MPECs  on 5 October '08

Minor Planet Electronic Circulars

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


MPEC 2008-T48 - "23:21 UT" - Comet C/2008 S3 (Boattini)


MPEC 2008-T47 - "21:37 UT" - 2008 TR2


MPEC 2008-T46 - "21:34 UT" - 2008 TQ2


<< DOU on 5 Oct. '08 >>  MPEC 2008-T45 - "06:09 UT" - Daily Orbit Update

Observers  on 5 October '08

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

CodeObserver / observatory
J24Altamira Obs. in Spain, 1 in MPEC 2008-T48 -- C/2008 S3
B37Ametlla del Valles Obs. in Spain, 1 in MPEC 2008-T48 -- C/2008 S3
H55Astronomical Research Obs. (ARO) in Illinois, 12 in MPECs 2008-T45, 2008-T46 & 2008-T47 -- 2008 TZ, 2008 TR2, 2008 TQ2, 2008 TD1, 2008 TA1, 2008 SV11, 2008 ST7, 2008 SP7, 2008 SJ148, 2008 SE85, 2008 SE, 2008 RV
B09Capannoli Obs. in Italy, 2 in MPEC 2008-T45 -- 2008 TZ, 2008 SQ1
703Catalina Sky Survey in Arizona, 1 in MPEC 2008-T45 -- 2008 SQ1
850Cordell-Lorenz Obs. in Tennessee, 1 in MPEC 2008-T47 -- 2008 TR2
106Crni Vrh Obs. in Slovenia, 1 in MPEC 2008-T47 -- 2008 TR2
595Farra d'Isonzo Obs. in Italy, 1 in MPEC 2008-T45 -- 2008 TB2
F658program code 8 via Faulkes Telescope North in Hawaii, 1 in MPEC 2008-T45 -- 2008 QT3
J81Guirguillano Obs. in Spain, 2 in MPEC 2008-T45 -- 2008 QS11, 185851
240Herrenberg Obs. in Germany, 1 in MPEC 2008-T45 -- 2002 WP11
701Junk Bond Obs. in Arizona, 1 in MPEC 2008-T48 -- C/2008 S3
704LINEAR in New Mexico, 1 in MPEC 2008-T48 -- C/2008 S3
J34La Fecha Obs. in Spain, 8 in MPEC 2008-T45 -- 2008 SQ1, 2008 SQ, 2008 SN1, 2008 SE, 2008 QS11, 2008 NU, 2005 TZ51, 1620
560Madonna di Dossobuono Obs. in Italy, 4 in MPEC 2008-T45 -- 2008 SU1, 2008 PL3, 2008 JZ7, 2005 WS55
B67Mirasteilas Obs. in Switzerland, 1 in MPEC 2008-T45 -- 2006 GZ
474Mt. John Obs. in New Zealand, 1 in MPEC 2008-T47 -- 2008 TR2
G96Mt. Lemmon Survey (MLS) in Arizona, 2 in MPECs 2008-T46 & 2008-T48 -- 2008 TQ2, C/2008 S3
A13Naef Obs. in Switzerland, 1 in MPEC 2008-T45 -- 2008 SE
423North Ryde Obs. in New South Wales, 1 in MPEC 2008-T45 -- 3753
J53Posadas Obs. in Spain, 2 in MPEC 2008-T45 -- 190135, 16960
J41Raheny Obs. in Ireland, 1 in MPEC 2008-T45 -- 137032
E12Siding Spring Survey (SSS) in New South Wales, 3 in MPEC 2008-T45 -- 2008 SY148, 2008 SJ82, 2006 TB
A48Verona Obs. in Italy, 2 in MPEC 2008-T45 -- 2008 SU1, 2008 JZ7
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 5 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 TD2NEODyS14492030-207831.53e-08-6.30-6.440NEODyS: "Based on 18 optical observations (of which 0 are rejected as outliers) from 2008/10/03.395 to 2008/10/04.482."
JPL Sentry00222016-2104623.2e-07-4.62-5.270JPL: "Analysis based on 18 observations spanning 1.0862 days (2008-Oct-03.39461 to 2008-Oct-04.48085)." Diameter approximately 0.180 km. from mean, weighted H=21.4.
2008 TC2NEODyS14492011-20901515.81e-08-5.21-5.740NEODyS: "Based on 15 optical observations (of which 0 are rejected as outliers) from 2008/10/03.362 to 2008/10/04.437."
JPL Sentry01312011-21081841.4e-07-5.07-5.790JPL: "Analysis based on 15 observations spanning 1.0752 days (2008-Oct-03.36088 to 2008-Oct-04.43605)." Diameter approximately 0.117 km. from mean, weighted H=22.3.
2008 SJ82JPL Sentry1448R E M O V E DJPL: Risk listing removed at 0850 UTC.
NEODyS1448R E M O V E D-
2008 SV11NEODyS1449207213.25e-11-7.16-7.160NEODyS: "Based on 81 optical observations (of which 0 are rejected as outliers) from 2008/09/25.263 to 2008/10/04.214."
JPL Sentry1448207218.4e-10-5.76-5.760JPL: "Analysis based on 81 observations spanning 8.9508 days (2008-Sep-25.26245 to 2008-Oct-04.21327)." Diameter approximately 0.750 km. from mean, weighted H=18.3.
2008 ST7NEODyS14492062-2089114.17e-06-5.10-5.440NEODyS: "Based on 72 optical observations (of which 6 are rejected as outliers) from 2008/09/24.301 to 2008/10/04.240."
JPL Sentry14482073-2102322.9e-05-4.37-4.860JPL: "Analysis based on 66 observations spanning 9.9397 days (2008-Sep-24.29993 to 2008-Oct-04.23966)." Diameter approximately 0.052 km. from mean, weighted H=24.1.

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 5 October '08

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

2358Grabbed MPEC 2008-T48 - Comet C/2008 S3 (Boattini) - see above
2201Grabbed MPEC 2008-T46 - 2008 TQ2 - see above
Grabbed MPEC 2008-T47 - 2008 TR2 - see above
1449Noted that NEODyS has updated its 2008 ST7 risk assessment - see above
Noted that NEODyS has updated its 2008 SV11 risk assessment - see above
Grabbed MPEC 2008-T45 - Daily Orbit Update - see above
1448Noted that JPL Sentry has removed 2008 SJ82 as an impact risk - see above
Noted that NEODyS has removed 2008 SJ82 as an impact risk - see above
Noted that JPL Sentry has updated its 2008 ST7 risk assessment - see above
Noted that JPL Sentry has updated its 2008 SV11 risk assessment - see above
Noted that NEODyS has posted 2008 TC2 as an impact risk - see above
Noted that NEODyS has posted 2008 TD2 as an impact risk - see above
0131Noted that JPL Sentry has posted 2008 TC2 as an impact risk - see above
0022Noted that JPL Sentry has posted 2008 TD2 as an impact risk - see above