Contents  on 3 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 3 October '08

The MPC's NEO Confirmation Page has 12 listings: 2 new, 10 updated

When last checked at 2358 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had two new and ten updated listings. Of these, seven were "one nighters." So far The Tracking News has counted a total of 22 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 3 October '08

Minor Planet Electronic Circulars

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


MPEC 2008-T37 - "17:43 UT" - 2008 TE1


MPEC 2008-T36 - "17:08 UT" - 2008 TD1


MPEC 2008-T35 - "17:05 UT" - 2008 TC1


MPEC 2008-T34 - "17:01 UT" - 2008 TB1


MPEC 2008-T33 - "16:57 UT" - 2008 TA1


MPEC 2008-T32 - "16:53 UT" - 2008 TZ


<< DOU on 3 Oct. '08 >>  MPEC 2008-T31 - "06:09 UT" - Daily Orbit Update

Observers  on 3 October '08

A total of 22 observing facilities appear in today's MPECs.

CodeObserver / observatory
169Airali Obs. in Italy, 1 in MPEC 2008-T31 -- 39572
B37Ametlla del Valles Obs. in Spain, 1 in MPEC 2008-T31 -- 2001 UZ16
A50Andrushivka Obs. in the Ukraine, 1 in MPEC 2008-T31 -- 2003 RM
H55Astronomical Research Obs. (ARO) in Illinois, 16 in MPECs 2008-T31, 2008-T32 & 2008-T33 -- 2008 TZ, 2008 TG, 2008 TF, 2008 TE, 2008 TD, 2008 TB, 2008 TA1, 2008 SX7, 2008 SV11, 2008 ST7, 2008 SS, 2008 SR1, 2008 SJ148, 2008 SH82, 2008 SE85, 2008 QT3
703Catalina Sky Survey (CSS) in Arizona, 2 in MPEC 2008-T31 -- 2008 SO, 162215
448Desert Moon Obs. in New Mexico, 5 in MPEC 2008-T31 -- 2008 SX7, 2008 SU1, 2008 SC85, 2007 YJ, 190491
F658program code 8 via Faulkes Telescope North in Hawaii, 1 in MPEC 2008-T31 -- 2008 SR7
J95Great Shefford Obs. in England, 1 in MPEC 2008-T37 -- 2008 TE1
240Herrenberg Obs. in Germany, 1 in MPEC 2008-T31 -- 138947
B15Inastars Obs. in Germany, 1 in MPEC 2008-T33 -- 2008 TA1
704LINEAR in New Mexico, 13 in MPECs 2008-T31 & 2008-T37 -- 2008 TK, 2008 TE1, 2008 RG98, 2008 QS11, 2002 RW25, 2001 SG276, 162900, 162215, 162186, 138847, 137799, 11500, 5143
H01Magdalena Ridge Obs. (MRO) in New Mexico, 7 in MPECs 2008-T31, 2008-T32, 2008-T33, 2008-T34, 2008-T35, 2008-T36 & 2008-T37 -- 2008 TZ, 2008 TE1, 2008 TD1, 2008 TC1, 2008 TB1, 2008 TA1, 2008 SV11
G96Mt. Lemmon Survey (MLS) in Arizona, 11 in MPECs 2008-T31, 2008-T32, 2008-T33, 2008-T34, 2008-T35 & 2008-T36 -- 2008 TZ, 2008 TD1, 2008 TC1, 2008 TB1, 2008 TA1, 2008 SX7, 2008 QC, 2004 XN44, 2000 YO29, 162510, 140288
E09Oakley Southern Sky Obs. in New South Wales, 1 in MPEC 2008-T31 -- 2008 QS11
854Sabino Canyon Obs. in Arizona, 1 in MPEC 2008-T37 -- 2008 TE1
H36Sandlot Obs. in Kansas, 4 in MPECs 2008-T31, 2008-T32 & 2008-T37 -- 2008 TZ, 2008 TE1, 2008 SV11, 2008 SH82
204Schiaparelli Obs. in Italy, 2 in MPEC 2008-T31 -- 2008 SU1, 2008 SQ1
691Spacewatch 0.9m telescope in Arizona, 6 in MPECs 2008-T31, 2008-T32 & 2008-T33 -- 2008 TZ, 2008 TA1, 2004 RM251, 96315, 108906, 2368
291Spacewatch 1.8m telescope in Arizona, 14 in MPECs 2008-T31, 2008-T32, 2008-T33, 2008-T35 & 2008-T36 -- 2008 TZ, 2008 TD1, 2008 TC1, 2008 TA1, 2008 SW11, 2008 SV11, 2008 ST7, 2008 SP, 2008 SJ148, 2008 SE85, 2008 RM98, 2008 RK1, 2008 RJ1, 2008 RH1
6739Heath Rhoades via Table Mtn. Obs. in southern California, 1 in MPEC 2008-T32 -- 2008 TZ
F85Tiki Obs. in Tahiti, 1 in MPEC 2008-T31 -- 2008 SY148
A92Urseanu Obs. in Romania, 1 in MPEC 2008-T31 -- 185851
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 3 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 TENEODyS14562023-209084.9e-05-5.06-5.060NEODyS: "Based on 29 optical observations (of which 0 are rejected as outliers) from 2008/10/01.248 to 2008/10/02.332."
JPL Sentry14552023-2096145.5e-05-5.02-5.020JPL: "Analysis based on 29 observations spanning 1.0846 days (2008-Oct-01.24709 to 2008-Oct-02.3317)." Diameter approximately 0.010 km. from mean, weighted H=27.7.
2008 TBJPL Sentry1455R E M O V E DJPL: Risk listing removed at 0931 UTC.
2008 SE85NEODyS14562027-2088326.54e-08-4.17-4.530NEODyS: "Based on 33 optical observations (of which 0 are rejected as outliers) from 2008/09/28.449 to 2008/10/02.400."
JPL Sentry14552027-2106185.1e-08-4.29-4.650JPL: "Analysis based on 33 observations spanning 3.9513 days (2008-Sep-28.44782 to 2008-Oct-02.39908)." Diameter approximately 0.400 km. from mean, weighted H=19.6.
2008 SH82NEODyS14562043-208159.44e-07-4.25-4.500NEODyS: "Based on 30 optical observations (of which 0 are rejected as outliers) from 2008/09/26.214 to 2008/10/02.165."
JPL Sentry14552043-208161.1e-06-4.13-4.380JPL: "Analysis based on 30 observations spanning 5.9515 days (2008-Sep-26.21299 to 2008-Oct-02.16454)." Diameter approximately 0.210 km. from mean, weighted H=21.1.
2008 SV11NEODyS14562047-208481.57e-09-5.46-5.680NEODyS: "Based on 75 optical observations (of which 0 are rejected as outliers) from 2008/09/25.263 to 2008/10/03.151."
JPL Sentry14552026-208481.1e-08-4.61-4.840JPL: "Analysis based on 75 observations spanning 7.8874 days (2008-Sep-25.26245 to 2008-Oct-03.14988)." Diameter approximately 0.750 km. from mean, weighted H=18.3.
2008 ST7NEODyS14562062-2089114.2e-06-5.09-5.430NEODyS: "Based on 63 optical observations (of which 6 are rejected as outliers) from 2008/09/24.301 to 2008/10/02.348."
JPL Sentry14552073-2108434.0e-05-4.25-4.880JPL: "Analysis based on 57 observations spanning 8.0468 days (2008-Sep-24.29993 to 2008-Oct-02.34678)." 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 3 October '08

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

1858Grabbed MPEC 2008-T34 - 2008 TB1 - see above
Grabbed MPEC 2008-T35 - 2008 TC1 - see above
Grabbed MPEC 2008-T36 - 2008 TD1 - see above
Grabbed MPEC 2008-T37 - 2008 TE1 - see above
1700Grabbed MPEC 2008-T32 - 2008 TZ - see above
Grabbed MPEC 2008-T33 - 2008 TA1 - see above
1456Noted that NEODyS has updated its 2008 SE85 risk assessment - see above
Noted that NEODyS has updated its 2008 SH82 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
Grabbed MPEC 2008-T31 - Daily Orbit Update - see above
1455Noted that JPL Sentry has updated its 2008 SE85 risk assessment - see above
Noted that JPL Sentry has updated its 2008 SH82 risk assessment - 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 JPL Sentry has removed 2008 TB as an impact risk - see above
Noted that JPL Sentry has updated its 2008 TE risk assessment - see above
Noted that NEODyS has posted 2008 TE as an impact risk - see above