2008-11-01 Tracking News

Contents on 1 November '08

IAU Minor Planet Center
- NEOCP Activity -- 15 listings: 9 new, 6 updated
- New MPECs -- one MPEC
Observers -- thirteen observing facilities
Impact Risk Monitoring -- four 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 1 November '08

The MPC's NEO Confirmation Page has 15 listings: 9 new, 6 updated

When last checked at 2358 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had nine new and six updated listings. Of these, ten were "one nighters." So far The Tracking News has counted a total of 20 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 1 November '08

Minor Planet Electronic Circulars

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

<< DOU on 1 Nov. '08 >> MPEC 2008-V01 - "06:16 UT" - Daily Orbit Update

Observations of risk-listed objects
K08U99W 2008 UW99 (small asteroid, arc=1 day, H=24.4 ~45m) from Great Shefford Obs. (Nov. 1.19p4)
K08U95U 2008 UU95 (small asteroid, arc=1 day, H=23.4 ~71m) from Desert Moon Obs. (Oct. 31.16-23p3)
K08U95T 2008 UT95 (small asteroid, arc=2 days, H=27.4 ~11m) from Astronomical Research Obs. (ARO) (Oct. 31.18-19p3) and Great Shefford Obs. (Oct. 31.81-82p4 & Nov. 1.12-13p3)
K08U07B 2008 UB7 (small asteroid, arc=5 days, H=23.8 ~59m) from Magdalena Ridge Obs. (MRO) (Oct. 31.12-13p5)
Observations of recently (no longer) risk-listed objects
K08U00C 2008 UC (arc=12 days, H=18.9 ~562m) from the Siding Spring Survey (SSS) (Oct. 31.54p1)
K08T02D 2008 TD2 (arc=28 days, H=21.6 ~162m) from Desert Moon Obs. (Oct. 31.42-48p3)
K08S82H 2008 SH82 (arc=35 days, H=21.0 ~214m) from ARO (Oct. 31.05-07p3) and Desert Moon Obs. (Oct. 31.06-12p3)
Observations of small asteroids (H>22.0)
K08U03M 2008 UM3 (arc=7 days, H=24.9 ~35m) from the Spacewatch 1.8m telescope (Oct. 31.23-24p3)
K08U02S 2008 US2 (arc=8 days, H=23.8 ~59m) from Spacewatch 1.8m (Oct. 31.43-44p3)
K08U02R 2008 UR2 (arc=8 days, H=26.9 ~14m) from Spacewatch 1.8m (Oct. 31.25-26p3)
K08U00F 2008 UF (arc=11 days, H=26.2 ~19m) from Spacewatch 1.8m (Oct. 31.40-41p3)
K08U00B 2008 UB (arc=12 days, H=22.2 ~123m) from Spacewatch 1.8m (Oct. 31.29-30p3)
K08T01D 2008 TD1 (arc=29 days, H=25.2 ~31m) from the Mt. Lemmon Survey (MLS) (Oct. 31.35-42p8 at V=21.1-22.5)
Observations of almost-small asteroids (21.7<H<=22.0)
K08U03N 2008 UN3 (arc=7 days, H=21.9 ~141m) from Spacewatch 1.8m (Oct. 31.44-45p3)
Observations of other objects
K08U90O 2008 UO90 (arc=4 days, H=20.5 ~269m) from Spacewatch 1.8m (Oct. 31.26-27p3)
K08U90L 2008 UL90 (IEO, Q=0.959 AU, arc=5 days, H=18.5 ~676m) from LINEAR (Oct. 31.43-48p4)
K08U04S 2008 US4 (arc=26 days, H=20.7 ~245m) from Petit Jean Mtn. South Obs. (PJMSO) (Oct. 31.29-30p7), the Catalina Sky Survey (CSS) (Oct. 31.43-44p4), and Thompsonville Obs. (Nov. 1.08-10p6)
K08U01U 2008 UU1 (arc=9 days, H=19.8 ~371m) from SSS (Oct. 31.55p2)
K08SO5X 2008 SX245 (arc=32 days, H=17.8 ~933m) from LINEAR (Oct. 31.20-24p5)
K08S01Q 2008 SQ1 (Q=4.682 AU, arc=2 opp, H=18.4 ~708m) from PJMSO (Oct. 31.30-31p5) and Thompsonville Obs. (Nov. 1.11-13p6)
K08S00E 2008 SE (arc=42 days, H=19.4 ~446m) from LINEAR (Oct. 31.25-30p5), PJMSO (Oct. 31.32p6), and Thompsonville Obs. (Nov. 1.17-18p6)
K08M01R 2008 MR1 (arc=3 opp, H=18.4 ~708m) from PJMSO (Oct. 31.34-36p6)
K07R05F 2007 RF5 (arc=2 opp, H=18.4 ~708m) from LINEAR (Oct. 31.08-13p4)
K06SL7Z 2006 SZ217 (arc=3 opp, H=17.3 ~1.17 km) from PJMSO (Oct. 31.28p5)
K05YG5S 2005 YS165 (arc=2 opp, H=17.4 ~1.12 km) from the Spacewatch 0.9m telescope (Oct. 31.46-48p3)
K05W01D 2005 WD1 (i=43.1°, arc=3 opp, H=16.7 ~1.55 km) from SSS (Oct. 31.61-63p3)
K05A42T 2005 AT42 (Q=4.605 AU, arc=3 opp, H=16.5 ~1.70 km) from Spacewatch 1.8m (Oct. 31.33-34p3)
K04T19L 2004 TL19 (arc=2 opp, H=20.6 ~257m) from LINEAR (Oct. 31.19-24p5)
K03J13D 2003 JD13 (i=40.8°, arc=2 opp, H=19.7 ~389m) from Spacewatch 1.8m (Oct. 31.36-37p2)
K02V94Y 2002 VY94 (Q=5.375 AU, arc=2 opp, H=16.8 ~1.48 km) from Spacewatch 0.9m (Oct. 31.34-37p3)
J99R32D 1999 RD32 (Q=4.672 AU, arc=4 opp, H=16.4 ~1.78 km) from MLS (Oct. 31.37-39p4)
J0166 190166 2005 UP156 from LINEAR (Oct. 31.25-30p5)
I9700 189700 2001 TA45 from LINEAR (Oct. 31.14-19p5)
I5851 185851 2000 DP107 from Thompsonville Obs. (Nov. 1.07-08p5)
F3306 153306 2001 JL1 from LINEAR (Oct. 31.31-35p5)
90075 90075 2002 VU94 from Spacewatch 0.9m (Oct. 31.13-16p3)
35107 35107 1991 VH from SSS (Oct. 30.73-74p3)
16834 16834 1997 WU22 from LINEAR (Oct. 31.38-42p4)
08567 8567 1996 HW1 from Thompsonville Obs. (Nov. 1.14-16p6)
05731 5731 Zeus (1988 VP4) from MLS (Oct. 31.15-17p4)
05011 5011 Ptah (6743 P-L) from LINEAR (Oct. 31.08-13p4)
04450 4450 Pan (1987 SY) from MLS (Oct. 31.43-45p4)
01980 1980 Tezcatlipoca (1950 LA) from Thompsonville Obs. (Nov. 1.03-04p6)
01916 1916 Boreas (1953 RA) from El Maestrat Obs. (Oct. 29.94-96p4)

Observers on 1 November '08

Thirteen observing facilities appear in today's MPEC.

Code	Observer / observatory
`H55`	Astronomical Research Obs. (ARO) in Illinois, 2 in MPEC 2008-V01 -- 2008 UT95, 2008 SH82
`703`	Catalina Sky Survey in Arizona, 1 in MPEC 2008-V01 -- 2008 US4
`448`	Desert Moon Obs. in New Mexico, 3 in MPEC 2008-V01 -- 2008 UU95, 2008 TD2, 2008 SH82
`J19`	El Maestrat Obs., 1 in MPEC 2008-V01 -- 1916
`J95`	Great Shefford Obs. in England, 2 in MPEC 2008-V01 -- 2008 UW99, 2008 UT95
`704`	LINEAR in New Mexico, 10 in MPEC 2008-V01 -- 2008 UL90, 2008 SX245, 2008 SE, 2007 RF5, 2004 TL19, 190166, 189700, 16834, 153306, 5011
`H01`	Magdalena Ridge Obs. in New Mexico, 1 in MPEC 2008-V01 -- 2008 UB7
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 4 in MPEC 2008-V01 -- 2008 TD1, 1999 RD32, 5731, 4450
`H45`	Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 5 in MPEC 2008-V01 -- 2008 US4, 2008 SQ1, 2008 SE, 2008 MR1, 2006 SZ217
`E12`	Siding Spring Survey (SSS) in New South Wales, 4 in MPEC 2008-V01 -- 2008 UU1, 2008 UC, 2005 WD1, 35107
`691`	Spacewatch 0.9m telescope in Arizona, 3 in MPEC 2008-V01 -- 2005 YS165, 2002 VY94, 90075
`291`	Spacewatch 1.8m telescope in Arizona, 9 in MPEC 2008-V01 -- 2008 US2, 2008 UR2, 2008 UO90, 2008 UN3, 2008 UM3, 2008 UF, 2008 UB, 2005 AT42, 2003 JD13
`H53`	Thompsonville Obs. in Illinois, 6 in MPEC 2008-V01 -- 2008 US4, 2008 SQ1, 2008 SE, 185851, 8567, 1980

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

Impact Risk Monitoring on 1 November '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 UW99	JPL Sentry	1443	2074	2	4.5e-08	-7.26	-7.51	0	JPL: "Analysis based on 17 observations spanning .73582 days (2008-Oct-31.45784 to 2008-Nov-01.19366)." Diameter approximately 0.046 km. from mean, weighted H=24.4.

2008 UU95	JPL Sentry	1443	2011-2108	477	1.3e-06	-4.86	-5.45	0	JPL: "Analysis based on 18 observations spanning .85118 days (2008-Oct-30.37925 to 2008-Oct-31.23043)." Diameter approximately 0.066 km. from mean, weighted H=23.5.
2008 UU95	NEODyS	1443	2011-2090	231	8.04e-07	-5.29	-6.25	0	NEODyS: "Based on 18 optical observations (of which 0 are rejected as outliers) from 2008/10/30.380 to 2008/10/31.231."

2008 UT95	JPL Sentry	1443	R E M O V E D						JPL: Risk listing removed at 0951 UTC.

2008 UB7	JPL Sentry	1443	2044-2106	37	5.0e-05	-3.57	-3.99	0	JPL: "Analysis based on 48 observations spanning 4.8668 days (2008-Oct-26.25877 to 2008-Oct-31.12558)." Diameter approximately 0.060 km. from mean, weighted H=23.8.
2008 UB7	NEODyS	1443	2044-2089	49	4.93e-05	-3.58	-3.99	0	NEODyS: "Based on 48 optical observations (of which 0 are rejected as outliers) from 2008/10/26.260 to 2008/10/31.126."

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 1 November '08

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

1444

Grabbed MPEC 2008-V01 - Daily Orbit Update - see above

1443

Noted that JPL Sentry has updated its 2008 UB7 risk assessment - see above
Noted that NEODyS has updated its 2008 UB7 risk assessment - see above
Noted that JPL Sentry has removed 2008 UT95 as an impact risk - see above
Noted that JPL Sentry has updated its 2008 UU95 risk assessment - see above
Noted that NEODyS has updated its 2008 UU95 risk assessment - see above
Noted that JPL Sentry has updated its 2008 UW99 risk assessment - see above

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