2008-10-11 Tracking News

Contents on 11 October '08

IAU Minor Planet Center
- NEOCP Activity -- seven listings: 7 updated
- New MPECs -- two MPECs
Observers -- fourteen observing facilities
Impact Risk Monitoring -- seven objects
Chronology

Resources:

Consolidated Risk Tables - the CRT page
Earth's Busy Neighborhood Traffic Report
Ephemerides for risk-rated and nearby objects
Old & new CRT Archive
Old News Archive & Small Objects Archive

The latest A/CC news is available via framed access, 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 11 October '08

The MPC's NEO Confirmation Page has 7 listings: 7 updated

When last checked at 2358 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had seven updated listings. Of these, three were "one nighters."

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 11 October '08

Minor Planet Electronic Circulars

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

MPEC 2008-T121 time-stamped "06:11 UT" - Daily Orbit Update - see below
MPEC 2008-T122 time-stamped "13:27 UT" - 2008 QD4

MPEC 2008-T122 - "13:27 UT" - 2008 QD4

K08Q04D 2008 QD4 (i=41.9°, q=5.438 AU, Q=11.414 AU, H=11.3 ~18.6 km) from Sierra Nevada Obs. (Oct. 2.85-94p5) and the Catalina Sky Survey (CSS) (Oct. 8.21-23p4)

<< DOU on 11 Oct. '08 >> MPEC 2008-T121 - "06:11 UT" - Daily Orbit Update

Observations of risk-listed objects
K08T25V 2008 TV25 (arc=2 days, H=19.9 ~355m) from Engelhardt Obs. Zelenchukskaya Station (Oct. 10.03p2), Astronomical Research Obs. (ARO) (Oct. 10.33-34p3), Desert Moon Obs. (Oct. 10.38-39p3), and Alter Satzberg Obs. (Oct. 11.09-10p3)
K08T10P 2008 TP10 (small asteroid, arc=2 days, H=22.5 ~107m) from ARO (Oct. 10.29-33p3 at V=22.2-3)
K08S82H 2008 SH82 (arc=14 days, H=21.1 ~204m) from ARO (Oct. 10.03-05p3)
K08S00T 2008 ST (small asteroid, arc=7 days, H=27.1 ~13m) from ARO (Sept. 27.04-05p5)
Observations of recently (no longer) risk-listed objects
K08T04C 2008 TC4 (q=0.350 AU, arc=4 days, H=21.3 ~186m) from the Mt. Lemmon Survey (MLS) (Oct. 10.15-17p4) and Alter Satzberg Obs. (Oct. 10.95-96p4)
K08T02C 2008 TC2 (small asteroid, arc=7 days, H=22.8 ~93m) from ARO (Oct. 10.31-33p3) and MLS (Oct. 10.42-44p4)
K08SE8J 2008 SJ148 (small asteroid, arc=11 days, H=24.3 ~47m) from MLS (Oct. 10.32-33p4)
K08S01U 2008 SU1 (arc=17 days, H=19.1 ~513m) from Desert Moon Obs. (Oct. 10.15-17p5)
K08S00O 2008 SO (arc=19 days, H=20.9 ~224m) from MLS (Oct. 10.28-30p3)
Observations of small asteroids (H>22.0)
K08T26M 2008 TM26 (arc=2 days, H=23.2 ~78m) from La Canada Obs. (Oct. 10.82-84p3) and Vallemare di Borbona Obs. (Oct. 10.89-91p4)
K08T09Y 2008 TY9 (arc=2 days, H=24.7 ~39m) from MLS (Oct. 10.15-17p4 & 10.22-24p3) and ARO (Oct. 10.19p5)
K08T09X 2008 TX9 (arc=2 days, H=26.2 ~19m) from MLS (Oct. 10.32-33p3)
K08T04E 2008 TE4 (arc=3 days, H=24.1 ~51m) from ARO (Oct. 10.03-04p5) and MLS (Oct. 10.13p4)
K08T04A 2008 TA4 (arc=4 days, H=25.0 ~34m) from ARO (Oct. 10.05p5) and Alter Satzberg Obs. (Oct. 10.88p2)
K08T03Y 2008 TY3 (arc=4 days, H=24.0 ~54m) from MLS (Oct. 10.25-27p4)
K08T03X 2008 TX3 (arc=4 days, H=24.9 ~35m) from the Spacewatch 0.9m telescope (Oct. 10.27-30p3) and Desert Moon Obs. (Oct. 10.30-32p3)
K08T02B 2008 TB2 (arc=7 days, H=24.5 ~43m) from CSS (Oct. 10.29-32p4)
K08T00Z 2008 TZ (arc=8 days, H=25.4 ~28m) from ARO (Oct. 10.04-05p5)
K08T00A 2008 TA (arc=9 days, H=23.8 ~59m) from ARO (Oct. 10.12-14p3)
K08R01E 2008 RE1 (arc=38 days, H=23.0 ~85m) from CSS (Oct. 10.28-31p4)
Observations of other objects
K08T10M 2008 TM10 (arc=3 days, H=19.2 ~490m) from Alter Satzberg Obs. (Oct. 10.79-82p8)
K08T09K 2008 TK9 (arc=3 days, H=19.8 ~371m) from Alter Satzberg Obs. (Oct. 10.99-01p2)
K08T09F 2008 TF9 (i=41.0°, arc=2 days, H=20.8 ~234m) from ARO (Oct. 10.10-11p3)
K08T04F 2008 TF4 (arc=5 days, H=18.9 ~562m) from Alter Satzberg Obs. (Oct. 11.03-04p4)
K08T04D 2008 TD4 (arc=4 days, H=19.6 ~407m) from Alter Satzberg Obs. (Oct. 11.05-06p3)
K08T04B 2008 TB4 (i=41.8°, arc=3 days, H=20.9 ~224m) from ARO (Oct. 10.02p5)
K08T02R 2008 TR2 (arc=5 days, H=19.7 ~389m) from Desert Moon Obs. (Oct. 10.41-43p3)
K08S07X 2008 SX7 (arc=11 days, H=18.3 ~741m) from ARO (Sept. 27.06-07p3)
K08S01O 2008 SO1 (Q=4.643 AU, arc=18 days, H=19.4 ~446m) from ARO (Oct. 10.35-36p3)
K08S00Q 2008 SQ (arc=19 days, H=19.5 ~426m) from ARO (Sept. 25.36p5), Stia Obs. (Oct. 9.82-83p4), and Desert Moon Obs. (Oct. 10.35-36p5)
K08R24Z 2008 RZ24 (arc=31 days, H=20.1 ~323m) from ARO (Sept. 25.37-38p3)
K08R00T 2008 RT (arc=38 days, H=19.8 ~371m) from ARO (Sept. 25.43p5)
K08Q03T 2008 QT3 (arc=42 days, H=18.5 ~676m) from ARO (Sept. 27.08-09p3)
K08Q00C 2008 QC (arc=52 days, H=20.6 ~257m) from MLS (Oct. 10.28-29p4)
K08P03H 2008 PH3 (arc=68 days, H=21.7 ~155m) from Desert Moon Obs. (Oct. 10.20-26p3)
K08N00U 2008 NU (Q=4.202 AU, arc=101 days, H=17.5 ~1.07 km) from La Fecha Obs. (Oct. 10.90p2)
K08M01H 2008 MH1 (Q=4.263 AU, arc=97 days, H=18.5 ~676m) from ARO (Sept. 25.04-05p4)
K08M00Z 2008 MZ (Q=4.207 AU, arc=111 days, H=18.6 ~645m) from ARO (Sept. 25.39-40p2)
K08L08W 2008 LW8 (arc=3 opp, H=17.3 ~1.17 km) from ARO (Sept. 25.44-45p4)
K08G03V 2008 GV3 (i=72.9°, arc=2 opp, H=18.5 ~676m) from CSS (Oct. 10.20-22p4)
K07T19A 2007 TA19 (arc=2 opp, H=19.5 ~426m) from CSS (Oct. 10.41-43p4)
K06S19U 2006 SU19 (arc=3 opp, H=19.1 ~513m) from Spacewatch 0.9m (Oct. 10.21-25p3)
K05W55S 2005 WS55 (arc=4 opp, H=16.0 ~2.14 km, q=1.108 AU) from LINEAR (Oct. 10.22-27p5)
K05W04K 2005 WK4 (arc=4 opp, H=20.1 ~323m) from CSS (Oct. 10.41-43p4)
K01U16Z 2001 UZ16 (arc=3 opp, H=19.4 ~446m) from LINEAR (Oct. 10.09-14p5)
I5851 185851 2000 DP107 from Bolzaneto Obs. (Oct. 9.84-86p4) and CSS (Oct. 10.20-22p4)
D7044 137044 1998 UC50 from Spacewatch 0.9m (Oct. 10.14-18p3)
68950 68950 2002 QF15 from MLS (Oct. 10.09-10p4)
20460 20460 Robwhiteley (1999 LO28) from LINEAR (Oct. 10.41-46p4)
11500 11500 1989 UR from CSS (Oct. 10.16-19p4)
06050 6050 Miwablock (1992 AE) from MLS (Oct. 10.50-51p4)

Observers on 11 October '08

Fourteen observing facilities appear in today's MPECs.

Code	Observer / observatory
`B03`	Alter Satzberg Obs. in Austria, 7 in MPEC 2008-T121 -- 2008 TV25, 2008 TM10, 2008 TK9, 2008 TF4, 2008 TD4, 2008 TC4, 2008 TA4
`H55`	Astronomical Research Obs. (ARO) in Illinois, 21 in MPEC 2008-T121 -- 2008 TZ, 2008 TY9, 2008 TV25, 2008 TP10, 2008 TF9, 2008 TE4, 2008 TC2, 2008 TB4, 2008 TA4, 2008 TA, 2008 SX7, 2008 ST, 2008 SQ, 2008 SO1, 2008 SH82, 2008 RZ24, 2008 RT, 2008 QT3, 2008 MZ, 2008 MH1, 2008 LW8
`A88`	Bolzaneto Obs. in Italy, 1 in MPEC 2008-T121 -- 185851
`703`	Catalina Sky Survey (CSS) in Arizona, 8 in MPECs 2008-T121 & 2008-T122 -- 2008 TB2, 2008 RE1, 2008 QD4, 2008 GV3, 2007 TA19, 2005 WK4, 185851, 11500
`448`	Desert Moon Obs. in New Mexico, 6 in MPEC 2008-T121 -- 2008 TX3, 2008 TV25, 2008 TR2, 2008 SU1, 2008 SQ, 2008 PH3
`114`	Engelhardt Obs. Zelenchukskaya Station in Karachay-Cherkessia, 1 in MPEC 2008-T121 -- 2008 TV25
`704`	LINEAR in New Mexico, 3 in MPEC 2008-T121 -- 2005 WS55, 2001 UZ16, 20460
`J87`	La Canada Obs. in Spain, 1 in MPEC 2008-T121 -- 2008 TM26
`J34`	La Fecha Obs. in Spain, 1 in MPEC 2008-T121 -- 2008 NU
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 11 in MPEC 2008-T121 -- 2008 TY9, 2008 TY3, 2008 TX9, 2008 TE4, 2008 TC4, 2008 TC2, 2008 SO, 2008 SJ148, 2008 QC, 68950, 6050
`J86`	Sierra Nevada Obs. in Spain, 1 in MPEC 2008-T122 -- 2008 QD4
`691`	Spacewatch 0.9m telescope in Arizona, 3 in MPEC 2008-T121 -- 2008 TX3, 2006 SU19, 137044
`A78`	Stia Obs. in Italy, 1 in MPEC 2008-T121 -- 2008 SQ
`A55`	Vallemare di Borbona Obs. in Italy, 1 in MPEC 2008-T121 -- 2008 TM26

For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring on 11 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 TS26	NEODyS	1517	2013	1	2.66e-05	-7.47	-7.47	0	NEODyS: "Based on 20 optical observations (of which 0 are rejected as outliers) from 2008/10/09.330 to 2008/10/09.439."

2008 TQ26	NEODyS	1517	2012-2089	73	6.83e-09	-6.47	-7.18	0	NEODyS: "Based on 13 optical observations (of which 0 are rejected as outliers) from 2008/10/09.385 to 2008/10/10.321."

2008 TP26	NEODyS	1517	2013-2090	138	2.29e-08	-6.21	-6.77	0	NEODyS: "Based on 13 optical observations (of which 0 are rejected as outliers) from 2008/10/09.352 to 2008/10/10.331."

2008 TV25	JPL Sentry	1516	R E M O V E D						JPL: Risk listing removed at 1031 UTC.
2008 TV25	NEODyS	1516	R E M O V E D						-

2008 TP10	JPL Sentry	1516	R E M O V E D						JPL: Risk listing removed at 1030 UTC.
2008 TP10	NEODyS	1516	R E M O V E D						-

2008 SH82	NEODyS	1517	2081	1	6.15e-08	-5.58	-5.58	0	NEODyS: "Based on 47 optical observations (of which 0 are rejected as outliers) from 2008/09/26.214 to 2008/10/10.055."
2008 SH82	JPL Sentry	1516	2081	1	6.2e-08	-5.54	-5.54	0	JPL: "Analysis based on 47 observations spanning 13.841 days (2008-Sep-26.21299 to 2008-Oct-10.05434)." Diameter approximately 0.210 km. from mean, weighted H=21.0.

2008 ST	JPL Sentry	1516	2047-2101	14	4.4e-05	-5.76	-5.90	0	JPL: "Analysis based on 49 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 11 October '08

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

1517

Noted that NEODyS has updated its 2008 SH82 risk assessment - see above
Grabbed MPEC 2008-T121 - Daily Orbit Update - see above

1516

Noted that JPL Sentry 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 removed 2008 TP10 as an impact risk - see above
Noted that NEODyS has removed 2008 TP10 as an impact risk - see above
Noted that NEODyS has posted 2008 TP26 as an impact risk - see above
Noted that NEODyS has posted 2008 TQ26 as an impact risk - see above
Noted that NEODyS has posted 2008 TS26 as an impact risk - see above
Noted that JPL Sentry has removed 2008 TV25 as an impact risk - see above
Noted that NEODyS has removed 2008 TV25 as an impact risk - see above
Grabbed MPEC 2008-T122 - 2008 QD4 - see above

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