Contents  on 4 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 4 October '08

The MPC's NEO Confirmation Page has 7 listings: 2 new, 5 updated

When last checked at 2358 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had two new and five updated listings. Of these, two were "one nighters." So far The Tracking News has counted a total of seventeen 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 4 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-T44 - "21:45 UT" - 2008 TF2


MPEC 2008-T43 - "21:42 UT" - 2008 TE2


MPEC 2008-T42 - "21:40 UT" - 2008 TD2


MPEC 2008-T41 - "21:37 UT" - 2008 TC2


MPEC 2008-T40 - "21:35 UT" - 2008 TB2


MPEC 2008-T39 - "15:59 UT" - 2006 HD2


<< DOU on 4 Oct. '08 >>  MPEC 2008-T38 - "06:09 UT" - Daily Orbit Update

Observers  on 4 October '08

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

CodeObserver / observatory
H55Astronomical Research Obs. (ARO) in Illinois, 20 in MPECs 2008-T38, 2008-T40, 2008-T41, 2008-T42 & 2008-T44 -- 2008 TF2, 2008 TE1, 2008 TD2, 2008 TC2, 2008 TC, 2008 TB2, 2008 TB1, 2008 SW1, 2008 SV7, 2008 ST7, 2008 SR, 2008 SQ7, 2008 SN1, 2008 SH82, 2008 SE85, 2008 RT26, 2008 RT, 2008 QC, 2008 MZ, 2008 MH1
703Catalina Sky Survey (CSS) in Arizona, 3 in MPEC 2008-T38 -- 2003 FQ6, 162215, 7888
448Desert Moon Obs. in New Mexico, 1 in MPEC 2008-T38 -- 2008 LN16
639Dresden Obs. in Germany, 2 in MPEC 2008-T38 -- 2008 SZ150, 2003 GW
F658program code 8 via Faulkes Telescope North in Hawaii, 1 in MPEC 2008-T38 -- 2008 JZ7
372Geisei Obs. in Japan, 1 in MPEC 2008-T38 -- 2008 SE
J95Great Shefford Obs. in England, 3 in MPECs 2008-T38, 2008-T40 & 2008-T43 -- 2008 TE2, 2008 TE1, 2008 TB2
B15Inastars Obs. in Germany, 1 in MPEC 2008-T38 -- 138947
704LINEAR in New Mexico, 10 in MPEC 2008-T38 -- 2008 TE1, 2008 SE, 2008 RE1, 90403, 90075, 85770, 155140, 12538, 4183, 1865
J34La Fecha Obs. in Spain, 5 in MPEC 2008-T38 -- 2008 SQ1, 2008 SQ, 2006 WZ2, 2006 SZ217, 164400
H01Magdalena Ridge Obs. (MRO) in New Mexico, 2 in MPECs 2008-T38 & 2008-T40 -- 2008 TB2, 2008 SV11
G96Mt. Lemmon Survey (MLS) in Arizona, 6 in MPECs 2008-T39, 2008-T40, 2008-T41, 2008-T42, 2008-T43 & 2008-T44 -- 2008 TF2, 2008 TE2, 2008 TD2, 2008 TC2, 2008 TB2, 2006 HD2
J69North Obs. in England, 1 in MPEC 2008-T38 -- 164400
473Remanzacco Obs. in Italy, 1 in MPEC 2008-T40 -- 2008 TB2
H11Rodeo Obs., 1 in MPEC 2008-T38 -- 2008 SQ
854Sabino Canyon Obs. in Arizona, 1 in MPEC 2008-T40 -- 2008 TB2
H36Sandlot Obs. in Kansas, 1 in MPEC 2008-T40 -- 2008 TB2
204Schiaparelli Obs. in Italy, 1 in MPEC 2008-T40 -- 2008 TB2
E12Siding Spring Survey (SSS) in New South Wales, 6 in MPEC 2008-T38 -- 2008 SR1, 2008 SD, 2006 TD, 86829, 11398, 5131
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2008-T38 -- 2001 SG10
291Spacewatch 1.8m telescope in Arizona, 14 in MPEC 2008-T38 -- 2008 TL, 2008 TE, 2008 SW11, 2008 ST7, 2008 SP, 2008 SO, 2008 SH82, 2008 SE85, 2008 SD85, 2008 RK1, 2008 RG98, 2008 OX8, 2005 SN25, 2001 SD170
J35Tucci Obs. in Spain, 1 in MPEC 2008-T38 -- 4179
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 4 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 TENEODyS14572023-209094.21e-05-5.13-5.130NEODyS: "Based on 32 optical observations (of which 0 are rejected as outliers) from 2008/10/01.248 to 2008/10/03.247."
JPL Sentry14562023-204734.4e-05-5.12-5.120JPL: "Analysis based on 32 observations spanning 1.9987 days (2008-Oct-01.24709 to 2008-Oct-03.24577)." Diameter approximately 0.010 km. from mean, weighted H=27.7.
2008 SE85JPL Sentry1456R E M O V E DJPL: Risk listing removed at 0852 UTC.
NEODyS1456R E M O V E D-
2008 SH82NEODyS14572043-208147.32e-07-4.45-4.630NEODyS: "Based on 35 optical observations (of which 0 are rejected as outliers) from 2008/09/26.214 to 2008/10/03.338."
JPL Sentry14562043-208148.3e-07-4.34-4.570JPL: "Analysis based on 35 observations spanning 7.1247 days (2008-Sep-26.21299 to 2008-Oct-03.33769)." Diameter approximately 0.210 km. from mean, weighted H=21.1.
2008 SV11NEODyS1457207212.04e-10-6.37-6.370NEODyS: "Based on 78 optical observations (of which 0 are rejected as outliers) from 2008/09/25.263 to 2008/10/03.348."
JPL Sentry14562059-208453.5e-09-5.16-5.270JPL: "Analysis based on 78 observations spanning 8.0851 days (2008-Sep-25.26245 to 2008-Oct-03.34757)." Diameter approximately 0.748 km. from mean, weighted H=18.3.
2008 ST7NEODyS14572068-2089114.21e-06-5.10-5.430NEODyS: "Based on 69 optical observations (of which 6 are rejected as outliers) from 2008/09/24.301 to 2008/10/03.287."
JPL Sentry14562073-2108403.9e-05-4.26-4.880JPL: "Analysis based on 63 observations spanning 8.9859 days (2008-Sep-24.29993 to 2008-Oct-03.28586)." 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 4 October '08

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

2152Grabbed MPEC 2008-T40 - 2008 TB2 - see above
Grabbed MPEC 2008-T41 - 2008 TC2 - see above
Grabbed MPEC 2008-T42 - 2008 TD2 - see above
Grabbed MPEC 2008-T43 - 2008 TE2 - see above
Grabbed MPEC 2008-T44 - 2008 TF2 - see above
1601Grabbed MPEC 2008-T39 - 2006 HD2 - see above
1457Noted 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
Noted that NEODyS has updated its 2008 TE risk assessment - see above
Grabbed MPEC 2008-T38 - Daily Orbit Update - see above
1456Noted that JPL Sentry has removed 2008 SE85 as an impact risk - see above
Noted that NEODyS has removed 2008 SE85 as an impact risk - 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 updated its 2008 TE risk assessment - see above