2008-11-09 Tracking News

Contents on 9 November '08

IAU Minor Planet Center
- NEOCP Activity -- eleven listings: 5 new, 6 updated
- New MPECs -- one MPEC
Observers -- twelve observing facilities
Impact Risk Monitoring -- six 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 9 November '08

The MPC's NEO Confirmation Page has 11 listings: 5 new, 6 updated

When last checked at 2358 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had five new and six updated listings. Of these, seven were "one nighters." So far The Tracking News has counted a total of fifteen 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 9 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 9 Nov. '08 >> MPEC 2008-V46 - "07:17 UT" - Daily Orbit Update

Observations of risk-listed objects
K08V01B 2008 VB1 (arc=5 days, H=20.5 ~269m) from Desert Moon Obs. (Nov. 8.31-37p3)
K08U99W 2008 UW99 (small asteroid, arc=8 days, H=24.6 ~41m) from the Spacewatch 1.8m telescope (Nov. 8.44-46p2)
K08U07B 2008 UB7 (small asteroid, arc=5 days, H=23.9 ~56m) from Astronomical Research Obs. (ARO) (Oct. 30.08-09p6 & 31.04-05p5)
Observations of recently (no longer) risk-listed objects
K08V03Z 2008 VZ3 (small asteroid, arc=2 days, H=24.5 ~43m) from Spacewatch 1.8m (Nov. 8.15-16p3)
K08V00H 2008 VH (arc=6 days, H=20.0 ~339m) from Spacewatch 1.8m (Nov. 8.25-27p3)
K08U07E 2008 UE7 (arc=12 days, H=20.5 ~269m) from ARO (Oct. 30.27-28p4)
Observations of small asteroids (H>22.0)
K08UK2E 2008 UE202 (arc=8 days, H=22.5 ~107m) from Spacewatch 1.8m (Nov. 8.20-21p3)
K08U91Z 2008 UZ91 (arc=11 days, H=22.4 ~112m) from ARO (Oct. 31.16-17p4) and Spacewatch 1.8m (Nov. 8.28-29p3)
K08U03L 2008 UL3 (arc=7 days, H=25.4 ~28m) from ARO (Oct. 31.13-15p3)
K08T09Y 2008 TY9 (arc=24 days, H=24.9 ~35m) from ARO (Oct. 31.22-24p3)
Observations of almost-small asteroids (21.7<H<=22.0)
K08U03N 2008 UN3 (arc=14 days, H=22.0 ~135m) from ARO (Oct. 30.31-32p3)
Observations of other objects
K08V04U 2008 VU4 (Q=4.596 AU, arc=1 day, H=17.3 ~1.17 km) from LINEAR (Nov. 8.38-43p5)
K08V04Q 2008 VQ4 (arc=3 days, H=19.3 ~467m) from ARO (Nov. 6.17-18p3)
K08U91W 2008 UW91 (arc=11 days, H=21.7 ~155m) from Spacewatch 1.8m (Nov. 8.11-13p3)
K08U90O 2008 UO90 (arc=12 days, H=20.5 ~269m) from the Spacewatch 0.9m telescope (Nov. 8.19-23p3) and the Mt. Lemmon Survey (MLS) (Nov. 8.20-22p4)
K08U90N 2008 UN90 (arc=8 days, H=19.9 ~355m) from ARO (Oct. 31.05-06p6)
K08U90L 2008 UL90 (IEO, Q=0.959 AU, arc=13 days, H=18.4 ~708m) from Desert Moon Obs. (Nov. 8.43p1)
K08U07F 2008 UF7 (arc=5 days, H=19.1 ~513m) from ARO (Oct. 31.18-19p3)
K08U07D 2008 UD7 (arc=12 days, H=18.9 ~562m) from ARO (Oct. 30.25-27p4)
K08U05S 2008 US5 (arc=12 days, H=21.3 ~186m) from ARO (Oct. 30.10-11p3)
K08U04S 2008 US4 (arc=33 days, H=20.9 ~224m) from LINEAR (Nov. 8.19-22p3)
K08TF7K 2008 TK157 (arc=46 days, H=20.6 ~257m) from Spacewatch 0.9m (Nov. 8.09-13p3) and MLS (Nov. 8.14-16p4)
K08T04F 2008 TF4 (arc=32 days, H=19.3 ~467m) from ARO (Oct. 31.10-11p4)
K08SO5X 2008 SX245 (arc=40 days, H=17.8 ~933m) from Desert Moon Obs. (Nov. 8.25-28p3)
K08S07X 2008 SX7 (arc=41 days, H=18.5 ~676m) from ARO (Oct. 31.02-03p4)
K08S07R 2008 SR7 (arc=36 days, H=19.9 ~355m) from ARO (Oct. 30.04p1)
K08S01U 2008 SU1 (arc=38 days, H=19.2 ~490m) from ARO (Oct. 31.00-01p5)
K08S00Q 2008 SQ (arc=48 days, H=19.5 ~426m) from the Catalina Sky Survey (CSS) (Nov. 8.14-18p4)
K08S00O 2008 SO (arc=40 days, H=20.9 ~224m) from ARO (Oct. 31.08-12p4)
K08S00E 2008 SE (arc=47 days, H=19.4 ~446m) from ARO (Oct. 31.20-21p6)
K08R80E 2008 RE80 (arc=50 days, H=18.2 ~776m) from ARO (Oct. 31.07p1)
K08R24Q 2008 RQ24 (arc=56 days, H=20.8 ~234m) from ARO (Oct. 31.11p1)
K08Q01D 2008 QD1 (arc=75 days, H=18.9 ~562m) from ARO (Oct. 31.08-09p5)
K08Q00Z 2008 QZ (arc=70 days, H=20.4 ~282m) from ARO (Oct. 31.15-16p2)
K08M01H 2008 MH1 (Q=4.263 AU, arc=124 days, H=18.4 ~708m) from ARO (Oct. 31.03p4)
K08H38B 2008 HB38 (arc=2 opp, H=21.1 ~204m) from MLS (Nov. 8.20-22p4)
K07A12E 2007 AE12 (arc=5 opp, H=19.5 ~426m) from CSS (Nov. 8.40-43p4)
K06SL7Z 2006 SZ217 (arc=3 opp, H=17.3 ~1.17 km) from LINEAR (Nov. 8.43-48p5), Mirasteilas Obs. (Nov. 8.86-87p2), and Naef Obs. (Nov. 8.88-90p4)
K03Y01X 2003 YX1 (arc=2 opp, H=20.9 ~224m) from Spacewatch 1.8m (Nov. 8.51-52p3 at V=22.4)
K03W25X 2003 WX25 (Q=4.606 AU, arc=2 opp, H=18.6 ~645m) from CSS (Nov. 8.24-28p4)
K02X90P 2002 XP90 (arc=3 opp, H=18.3 ~741m) from Desert Moon Obs. (Nov. 8.47-49p2)
K01L05M 2001 LM5 (arc=3 opp, H=19.2 ~490m) from Mirasteilas Obs. (Nov. 8.75-77p3)
J0166 190166 2005 UP156 from Spacewatch 0.9m (Nov. 8.21-24p3) and MLS (Nov. 8.23-25p4)
G2900 162900 2001 HG31 from Lulin Minor Bodies Tracking (LIMIT) (Nov. 3.67-78p63) and Taurus-1 Obs. (Nov. 7.76-79p6)
G2679 162679 2000 TK1 from Herrenberg Obs. (Nov. 7.79-81p7)
F9923 159923 2004 YJ32 from Spacewatch 0.9m (Nov. 8.48-51p3)
E4901 144901 2004 WG1 from CSS (Nov. 8.24-28p4)
E1079 141079 2001 XS30 from LINEAR (Nov. 8.26-29p3)
54071 54071 2000 GQ146 from CSS (Nov. 8.24-28p3)
52768 52768 1998 OR2 from CSS (Nov. 8.40-43p4)
29075 29075 1950 DA from MLS (Nov. 8.07-09p4)
20460 20460 Robwhiteley (1999 LO28) from LINEAR (Nov. 8.37-42p5)
07358 7358 Oze (1995 YA3) from MLS (Nov. 8.41-43p7)
06178 6178 1986 DA from Spacewatch 0.9m (Nov. 8.25-29p3)
02368 2368 Beltrovata (1977 RA) from MLS (Nov. 8.41-43p4)
01620 1620 Geographos (1951 RA) from CSS (Nov. 8.14-18p4)

Observers on 9 November '08

Twelve observing facilities appear in today's MPEC.

Code	Observer / observatory
`H55`	Astronomical Research Obs. (ARO) in Illinois, 22 in MPEC 2008-V46 -- 2008 VQ4, 2008 UZ91, 2008 US5, 2008 UN90, 2008 UN3, 2008 UL3, 2008 UF7, 2008 UE7, 2008 UD7, 2008 UB7, 2008 TY9, 2008 TF4, 2008 SX7, 2008 SU1, 2008 SR7, 2008 SO, 2008 SE, 2008 RQ24, 2008 RE80, 2008 QZ, 2008 QD1, 2008 MH1
`703`	Catalina Sky Survey (CSS) in Arizona, 7 in MPEC 2008-V46 -- 2008 SQ, 2007 AE12, 2003 WX25, 54071, 52768, 144901, 1620
`448`	Desert Moon Obs. in New Mexico, 4 in MPEC 2008-V46 -- 2008 VB1, 2008 UL90, 2008 SX245, 2002 XP90
`240`	Herrenberg Obs. in Germany, 1 in MPEC 2008-V46 -- 162679
`704`	LINEAR in New Mexico, 5 in MPEC 2008-V46 -- 2008 VU4, 2008 US4, 2006 SZ217, 20460, 141079
`D35`	Lulin Minor Bodies Tracking in Taiwan, 1 in MPEC 2008-V46 -- 162900
`B67`	Mirasteilas Obs. in Switzerland, 2 in MPEC 2008-V46 -- 2006 SZ217, 2001 LM5
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 7 in MPEC 2008-V46 -- 2008 UO90, 2008 TK157, 2008 HB38, 29075, 190166, 7358, 2368
`A13`	Naef Obs. in Switzerland, 1 in MPEC 2008-V46 -- 2006 SZ217
`691`	Spacewatch 0.9m telescope in Arizona, 5 in MPEC 2008-V46 -- 2008 UO90, 2008 TK157, 190166, 159923, 6178
`291`	Spacewatch 1.8m telescope in Arizona, 7 in MPEC 2008-V46 -- 2008 VZ3, 2008 VH, 2008 UZ91, 2008 UW99, 2008 UW91, 2008 UE202, 2003 YX1
`A98`	Taurus-1 Obs. in Belarus, 1 in MPEC 2008-V46 -- 162900

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

Impact Risk Monitoring on 9 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 VV4	NEODyS	0946	2040	1	3.46e-11	-7.41	-7.41	0	NEODyS: "Based on 11 optical observations (of which 0 are rejected as outliers) from 2008/11/07.394 to 2008/11/07.977."
2008 VV4	JPL Sentry	0757	2021-2095	17	1.3e-08	-4.84	-5.23	0	JPL: "Analysis based on 11 observations spanning .58282 days (2008-Nov-07.39366 to 2008-Nov-07.97648)." Diameter approximately 0.444 km. from mean, weighted H=19.4.

2008 VR4	NEODyS	0946	2010-2059	48	1.8e-09	-5.71	-5.98	0	NEODyS: "Based on 11 optical observations (of which 0 are rejected as outliers) from 2008/11/07.068 to 2008/11/07.294."

2008 VB1	JPL Sentry	1609	R E M O V E D						JPL #2 for the day: Risk listing removed at 1052 UTC.

2008 UW99	JPL Sentry	1609	2093	1	2.5e-07	-6.72	-6.72	0	JPL: "Analysis based on 24 observations spanning 8.0045 days (2008-Oct-31.45784 to 2008-Nov-08.46233)." Diameter approximately 0.041 km. from mean, weighted H=24.6.

2008 UU95	JPL Sentry	0757	2062-2076	2	3.4e-10	-8.65	-8.79	0	JPL: "Analysis based on 34 observations spanning 7.9854 days (2008-Oct-30.37925 to 2008-Nov-07.3647)." Diameter approximately 0.072 km. from mean, weighted H=23.4.

2008 UB7	JPL Sentry	1609	2044-2100	32	4.8e-05	-3.64	-4.07	0	JPL #2 for the day: "Analysis based on 66 observations spanning 4.8668 days (2008-Oct-26.25877 to 2008-Oct-31.12558)." Diameter approximately 0.057 km. from mean, weighted H=23.9.

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 9 November '08

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

1609	Noted that JPL Sentry has updated its 2008 UB7 risk assessment - see above Noted that JPL Sentry has reposted 2008 UW99 as an impact risk - see above Noted that JPL Sentry has removed 2008 VB1 as an impact risk - see above
0946	Noted that NEODyS has posted 2008 VR4 as an impact risk - see above Noted that NEODyS has posted 2008 VV4 as an impact risk - see above Grabbed MPEC 2008-V46 - Daily Orbit Update - see above
0757	Noted that JPL Sentry has updated its 2008 UB7 risk assessment - see above Noted that JPL Sentry has updated its 2008 UU95 risk assessment - see above Noted that JPL Sentry has updated its 2008 VB1 risk assessment - see above Noted that JPL Sentry has posted 2008 VV4 as an impact risk - see above

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