3 Nov '07 Tracking News

Contents on 3 November '07

IAU Minor Planet Center
- NEOCP Activity -- 41 listings: 17 new, 24 updated
- New MPECs -- three MPECs
- Observers -- 20 observing facilities
Impact Risk Monitoring -- seven objects reported
Chronology

Resources:

Consolidated Risk Tables - CRT page
Old & new CRT Archive
Ephemerides for risk-rated objects
Old News Archive & Small Objects Archive
Note: Due to travel, this Web site and its news pages will update less frequently and at sometimes irregular intervals during the rest of October and early November.

The latest news: framed access (best), RSS news feed (flags updates), or redirection - Note: A/CC has a main Web site and a backup site, which now has its own backup 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 this year 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 November '07

The MPC's NEO Confirmation Page has 41 listings: 17 new, 24 updated

When last checked at 2213 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had seventeen new and 24 updated listings. Of these, 26 were "one nighters." So far The Tracking News has counted a total of 53 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 November '07

Minor Planet Electronic Circulars

As of last check at 2213 UTC, there have been three MPECs issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2007-V10 time-stamped "06:10 UT" - Daily Orbit Update - see below
MPEC 2007-V11 time-stamped "14:13 UT" - Comet P/2007 T2 (Kowalski) - see below
MPEC 2007-V12 time-stamped "14:18 UT" - Comet C/2007 T5 (Gibbs)

MPEC 2007-V12 - "14:18 UT" - Comet C/2007 T5 (Gibbs)

CK07T050 C/2007 T5 (Gibbs) (i=45.6°, q=4.048 AU, Q=92.037 AU, TP=2008 May 24.683 TT) from Cordell-Lorenz Obs. (Nov. 2.37-39p2 & 3.36-37p2) and Montcabre Obs. (Nov. 3.12-18p3)

MPEC 2007-V11 - "14:13 UT" - Comet P/2007 T2 (Kowalski)

PK07T020 P/2007 T2 (Kowalski) (q=0.696 AU, Q=5.488 AU, TP=2007 Sept. 19.028 TT) from Kiev Comet Station (Oct. 18.09-11p5), the Mt. Lemmon Survey (MLS) (Nov. 2.52-53p4), and Cordell-Lorenz Obs. (Nov. 3.43-45p2)

<< DOU on 3 Nov. '07 >> MPEC 2007-V10 - "06:10 UT" - Daily Orbit Update

Observations of risk-listed objects
K07V00G 2007 VG (i=49.3°, arc=1 day, H=20.9 ~224m) from Astronomical Research Obs. (ARO) (Nov. 2.11p3)
K07U51S 2007 US51 (small asteroid, arc=2 days, H=27.2 ~12m) from the Spacewatch 1.8m telescope (Nov. 2.37-38p3)
K07U51R 2007 UR51 (arc=2 days, H=21.5 ~170m) from MLS (Nov. 2.18-20p4) and Spacewatch 1.8m (Nov. 2.26-27p3)
K07U12N 2007 UN12 (small asteroid, arc=12 days, H=28.7 ~6m) from Spacewatch 1.8m (Nov. 2.31-32p3)
K07U06D 2007 UD6 (small asteroid, arc=13 days, H=28.4 ~7m) from ARO (Nov. 2.22-25p3 at V=22.7-8)
K07U01Y 2007 UY1 (small asteroid, arc=16 days, H=22.8 ~93m) from MLS (Nov. 2.15-17p4) and Spacewatch 1.8m (Nov. 3.20-21p3)
K07T72H 2007 TH72 (small asteroid, arc=18 days, H=24.2 ~49m) from MLS (Nov. 2.21-24p4 at V=22.2-4)
Observations of recently (no longer) risk-listed objects
K07U12L 2007 UL12 (q=0.385 AU, arc=8 days, H=20.6 ~257m) from Spacewatch 1.8m (Nov. 2.49p3)
K07U00H 2007 UH (small asteroid, arc=22 days, H=22.1 ~129m) from Spacewatch 1.8m (Nov. 2.30-31p3) and the Catalina Sky Survey (CSS) (Nov. 2.33-35p4)
K07T71D 2007 TD71 (i=49.7°, arc=20 days, H=18.4 ~708m) from Shenton Park Obs. (Nov. 2.64p2)
K07T66C 2007 TC66 (arc=21 days, H=19.4 ~446m) from Shenton Park Obs. (Nov. 2.63p3)
K07T19H 2007 TH19 (arc=25 days, H=17.8 ~933m) from Spacewatch 1.8m (Nov. 2.47-48p3)
K07T18X 2007 TX18 (arc=24 days, H=17.4 ~1.12 km) from Petit Jean Mtn. South Obs. (PJMSO) (Nov. 2.19-20p6)
K07T18V 2007 TV18 (small asteroid, arc=24 days, H=23.4 ~71m) from ARO (Nov. 2.07-10p3 at V=22.6-7)
K07T14B 2007 TB14 (small asteroid, Q=4.079 AU, arc=25 days, H=24.4 ~45m) from ARO (Nov. 2.17-20p3 at V=22.5-7)
Observations of small asteroids (H>22.0)
K07U40K 2007 UK40 (arc=2 days, H=23.4 ~71m) from PJMSO (Nov. 2.29-30p12) and Eschenberg Obs. (Nov. 2.73-74p7)
K07U00R 2007 UR (Q=4.487 AU, arc=17 days, H=23.8 ~59m) from MLS (Nov. 2.21-24p8)
K07R19Z 2007 RZ19 (arc=49 days, H=22.3 ~117m) from MLS (Nov. 2.25-28p4)
K07R17Q 2007 RQ17 (arc=54 days, H=22.6 ~102m) from ARO (Nov. 2.02-05p3 at V=23.1-2)
K07R12P 2007 RP12 (arc=52 days, H=24.6 ~41m) from ARO (Nov. 2.12-15p3 at V=22.6-7)
K06R01J 2006 RJ1 (arc=2 opp, H=22.3 ~117m) from MLS (Nov. 2.34-36p4)
Observations of almost-small asteroids (21.7<H<=22.0)
K07U12S 2007 US12 (arc=3 days, H=22.0 ~135m) from PJMSO (Nov. 2.27-28p4)
K07T24Q 2007 TQ24 (q=0.365 AU, arc=23 days, H=22.0 ~135m) from Spacewatch 1.8m (Nov. 3.21-22p3 at V=22.1)
Observations of other objects
K07U65S 2007 US65 (Q=4.016 AU, arc=3 days, H=20.0 ~339m) from ARO (Nov. 2.23-24p3)
K07U51Q 2007 UQ51 (arc=2 days, H=20.2 ~309m) from MLS (Nov. 2.15-17p4)
K07U13Q 2007 UQ13 (arc=3 days, H=19.8 ~371m) from MLS (Nov. 2.25-28p8)
K07U06S 2007 US6 (arc=19 days, H=18.2 ~776m) from Crni Vrh Obs. (Nov. 1.95-98p4) and Atlante Obs. (Nov. 2.92-93p3)
K07U03W 2007 UW3 (arc=15 days, H=19.4 ~446m) from Shenton Park Obs. (Nov. 2.74-75p3) and Naef Obs. (Nov. 2.94-97p4)
K07U03R 2007 UR3 (arc=24 days, H=21.3 ~186m) from Spacewatch 1.8m (Nov. 2.28p3)
K07U01X 2007 UX1 (arc=16 days, H=20.5 ~269m) from ARO (Nov. 2.28p3)
K07T68S 2007 TS68 (arc=21 days, H=19.5 ~426m) from Spacewatch 1.8m (Nov. 2.46-47p3)
K07T24R 2007 TR24 (arc=24 days, H=20.5 ~269m) from Shenton Park Obs. (Nov. 2.54p3)
K07T18Y 2007 TY18 (arc=2 opp, H=18.5 ~676m) from LINEAR (Nov. 2.31-36p5)
K07T15K 2007 TK15 (arc=25 days, H=21.2 ~195m) from Spacewatch 1.8m (Nov. 2.44-45p3)
K07T15G 2007 TG15 (arc=25 days, H=19.6 ~407m) from New Millennium Obs. (Oct. 31.86-93p10) and PJMSO (Nov. 2.23-24p6)
K07T08G 2007 TG8 (Q=4.307 AU, arc=49 days, H=18.7 ~616m) from New Millennium Obs. (Oct. 31.78-84p15)
K07S02V 2007 SV2 (arc=43 days, H=21.0 ~214m) from ARO (Nov. 1.00-01p3)
K07R12U 2007 RU12 (arc=51 days, H=19.9 ~355m) from PJMSO (Nov. 2.18-19p6)
K07R05F 2007 RF5 (arc=56 days, H=18.4 ~708m) from New Millennium Obs. (Oct. 31.85-92p11)
K07P11U 2007 PU11 (Q=4.384 AU, arc=3 opp, H=16.3 ~1.86 km) from PJMSO (Nov. 2.17-18p6) and Atlante Obs. (Nov. 2.96p3)
K07P09P 2007 PP9 (arc=83 days, H=21.3 ~186m) from ARO (Nov. 2.26-27p3)
K07L32R 2007 LR32 (arc=159 days, H=17.2 ~1.23 km) from New Millennium Obs. (Oct. 31.86-93p10)
K07K04N 2007 KN4 (Q=5.446 AU, arc=3 opp, H=16.9 ~1.41 km) from LINEAR (Nov. 2.24-29p5)
K06W01R 2006 WR1 (i=38.2°, arc=2 opp, H=17.7 ~977m) from Spacewatch 1.8m (Nov. 2.43p3)
K06SD4P 2006 SP134 (arc=3 opp, H=16.9 ~1.41 km) from Spacewatch 1.8m (Nov. 2.41p3 at V=22.1-2)
K06R36O 2006 RO36 (arc=2 opp, H=17.9 ~891m) from New Millennium Obs. (Oct. 31.76-82p10)
K06C00V 2006 CV (arc=3 opp, H=19.8 ~371m) from Spacewatch 1.8m (Nov. 3.19p3)
K04K01E 2004 KE1 (arc=2 opp, H=21.6 ~162m) from PJMSO (Nov. 2.24-27p3)
K03W25L 2003 WL25 (Q=4.175 AU, arc=3 opp, H=16.7 ~1.55 km) from Spacewatch 1.8m (Nov. 2.52-53p3)
K03U05C 2003 UC5 (i=36.9°, q=0.215 AU, arc=2 opp, H=20.1 ~323m) from Spacewatch 1.8m (Nov. 2.38-39p2)
K02U31A 2002 UA31 (arc=4 opp, H=19.0 ~537m) from New Millennium Obs. (Oct. 31.78-84p11) and LINEAR (Nov. 2.13-18p5)
K02RB8C 2002 RC118 (Q=4.624 AU, arc=2 opp, H=16.7 ~1.55 km) from CSS (Nov. 2.26-28p4)
K01R47Y 2001 RY47 (arc=3 opp, H=19.5 ~426m) from Crni Vrh Obs. (Nov. 1.78-81p4)
J90U00O 1990 UO (q=0.285 AU, arc=2 opp, H=19.7 ~389m) from Shenton Park Obs. (Nov. 2.67p3)
G3760 163760 2003 OR14 from LINEAR (Nov. 2.07-12p4)
G3051 163051 2001 YJ4 from the Spacewatch 0.9m telescope (Nov. 2.19-22p3)
G2173 162173 1999 JU3 from New Millennium Obs. (Oct. 31.77-83p11)
G2142 162142 1998 VR from GiaGa Obs. (Nov. 1.93-96p2)
F2787 152787 1999 TB10 from New Millennium Obs. (Oct. 31.86-92p10)
E4900 144900 2004 VG64 from CSS (Nov. 2.36-38p4)
D8971 138971 2001 CB21 from LINEAR (Nov. 2.07-12p5)
D8893 138893 2000 YH66 from New Millennium Obs. (Oct. 31.89-92p6)
D7084 137084 1998 XS16 from New Millennium Obs. (Oct. 31.77-83p8)
D6617 136617 1994 CC from Spacewatch 0.9m (Nov. 2.36-40p3)
A5140 105140 2000 NL10 from New Millennium Obs. (Oct. 31.76-83p5)
86324 86324 1999 WA2 from New Millennium Obs. (Oct. 31.76-82p10)
68063 68063 2000 YJ66 from Naef Obs. (Nov. 2.98-00p2)
53426 53426 1999 SL5 from New Millennium Obs. (Oct. 31.78-84p16) and Montana Blanca Obs. (Nov. 3.01-02p2)
18736 18736 1998 NU from Spacewatch 0.9m (Nov. 2.30-34p3)
16636 16636 1993 QP from New Millennium Obs. (Oct. 31.79-85p11)
11500 11500 1989 UR from LINEAR (Nov. 2.42-47p4)
04954 4954 Eric (1990 SQ) from Mt. Tuffley Obs. (Nov. 2.84p3)
03200 3200 Phaethon (1983 TB) from Vicksburg Obs. (Nov. 2.48p2)
01580 1580 Betulia (1950 KA) from LINEAR (Nov. 2.37-42p4)

Observers on 3 November '07

A total of 20 observing facilities appear in today's MPECs.

Code	Observer / observatory
`H55`	Astronomical Research Obs. (ARO) in Illinois, 10 in MPEC 2007-V10 -- 2007 VG, 2007 UX1, 2007 US65, 2007 UD6, 2007 TV18, 2007 TB14, 2007 SV2, 2007 RQ17, 2007 RP12, 2007 PP9
`J51`	Atlante Obs. in the Canary Islands, 2 in MPEC 2007-V10 -- 2007 US6, 2007 PU11
`703`	Catalina Sky Survey (CSS) in Arizona, 3 in MPEC 2007-V10 -- 2007 UH, 2002 RC118, 144900
`850`	Cordell-Lorenz Obs. in Tennessee, 2 in MPECs 2007-V11 & 2007-V12 -- C/2007 T5, P/2007 T2
`106`	Crni Vrh Obs. in Slovenia, 2 in MPEC 2007-V10 -- 2007 US6, 2001 RY47
`151`	Eschenberg Obs. in Switzerland, 1 in MPEC 2007-V10 -- 2007 UK40
`203`	GiaGa Obs. in Italy, 1 in MPEC 2007-V10 -- 162142
`585`	Kiev Comet Station in the Ukraine, 1 in MPEC 2007-V11 -- P/2007 T2
`704`	LINEAR in New Mexico, 7 in MPEC 2007-V10 -- 2007 TY18, 2007 KN4, 2002 UA31, 163760, 138971, 11500, 1580
`J46`	Montana Blanca Obs. in the Canary Islands, 1 in MPEC 2007-V10 -- 53426
`213`	Montcabre Obs. in Spain, 1 in MPEC 2007-V12 -- C/2007 T5
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 9 in MPECs 2007-V10 & 2007-V11 -- 2007 UY1, 2007 UR51, 2007 UR, 2007 UQ51, 2007 UQ13, 2007 TH72, P/2007 T2, 2007 RZ19, 2006 RJ1
`J93`	Mt. Tuffley Obs. in England, 1 in MPEC 2007-V10 -- 4954
`A13`	Naef Obs. in Switzerland, 2 in MPEC 2007-V10 -- 2007 UW3, 68063
`A24`	New Millennium Obs. in Italy, 14 in MPEC 2007-V10 -- 2007 TG8, 2007 TG15, 2007 RF5, 2007 LR32, 2006 RO36, 2002 UA31, 86324, 53426, 16636, 162173, 152787, 138893, 137084, 105140
`H45`	Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 7 in MPEC 2007-V10 -- 2007 US12, 2007 UK40, 2007 TX18, 2007 TG15, 2007 RU12, 2007 PU11, 2004 KE1
`D21`	Shenton Park Obs. in Western Australia, 5 in MPEC 2007-V10 -- 2007 UW3, 2007 TR24, 2007 TD71, 2007 TC66, 1990 UO
`691`	Spacewatch 0.9m telescope in Arizona, 3 in MPEC 2007-V10 -- 18736, 163051, 136617
`291`	Spacewatch 1.8m telescope in Arizona, 16 in MPEC 2007-V10 -- 2007 UY1, 2007 US51, 2007 UR51, 2007 UR3, 2007 UN12, 2007 UL12, 2007 UH, 2007 TS68, 2007 TQ24, 2007 TK15, 2007 TH19, 2006 WR1, 2006 SP134, 2006 CV, 2003 WL25, 2003 UC5
`H47`	Vicksburg Obs. in Mississippi, 1 in MPEC 2007-V10 -- 3200

Impact Risk Monitoring on 3 November '07

**Summary Risk Table for Risk Assessments Updated Today** (last checks: NEODyS and JPL at 2213 UTC)
See the CRT page for a list of all objects rated recently as risks.
Note that the time horizon for JPL is 100 years from today and for NEODyS is now 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

2007 VG	JPL Sentry	1407	2010-2105	61	5.2e-08	-4.16	-4.43	0	JPL: "Analysis based on 33 observations spanning .99564 days (2007-Nov-01.20193 to 2007-Nov-02.19757)." Diameter approximately 0.230 km. from mean, weighted H=20.8.
2007 VG	NEODyS	1128	2010-2090	94	5.27e-08	-4.14	-4.43	0	NEODyS: "Based on 33 optical observations (of which 0 are rejected as outliers) from 2007/11/01.203 to 2007/11/02.198."

2007 US51	JPL Sentry	1926	2082-2103	6	4.8e-06	-6.51	-6.83	0	JPL: "Analysis based on 24 observations spanning 1.9915 days (2007-Oct-31.38411 to 2007-Nov-02.37565)." Diameter approximately 0.012 km. from mean, weighted H=27.2.
2007 US51	NEODyS	1407	2062-2082	6	2.15e-06	-6.80	-6.86	0	NEODyS: "Based on 24 optical observations (of which 0 are rejected as outliers) from 2007/10/31.385 to 2007/11/02.376."

2007 UR51	JPL Sentry	1926	R E M O V E D						JPL: Risk listing removed at 1420 UTC.
2007 UR51	NEODyS	1407	R E M O V E D

2007 UN12	NEODyS	1407	2071-2090	21	5.59e-05	-6.50	-7.17	0	NEODyS: "Based on 81 optical observations (of which 0 are rejected as outliers) from 2007/10/21.373 to 2007/11/02.323."
2007 UN12	JPL Sentry	1128	2075-2107	26	2.1e-04	-6.00	-6.86	0	JPL: "Analysis based on 81 observations spanning 11.950 days (2007-Oct-21.37247 to 2007-Nov-02.32265)." Diameter approximately 0.006 km. from mean, weighted H=28.8.

2007 UD6	NEODyS	1926	2058-2090	46	9.05e-05	-5.98	-6.52	0	NEODyS: "Based on 47 optical observations (of which 0 are rejected as outliers) from 2007/10/20.296 to 2007/11/02.250."
2007 UD6	JPL Sentry	1128	2058-2095	54	9.2e-05	-5.97	-6.56	0	JPL: "Analysis based on 47 observations spanning 12.953 days (2007-Oct-20.29569 to 2007-Nov-02.24908)." Diameter approximately 0.007 km. from mean, weighted H=28.4.

2007 UY1	JPL Sentry	1407	2097-2100	2	1.7e-07	-6.15	-6.33	0	JPL: "Analysis based on 55 observations spanning 16.063 days (2007-Oct-18.14415 to 2007-Nov-03.2073)." Diameter approximately 0.093 km. from mean, weighted H=22.8.

2007 TH72	JPL Sentry	1926	R E M O V E D						JPL: Risk listing removed at 1407 UTC.
2007 TH72	NEODyS	1128	R E M O V E D

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 November '07

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

1926	Noted that JPL Sentry has removed 2007 TH72 as an impact risk - see above Noted that NEODyS has updated its 2007 UD6 risk assessment - see above Noted that JPL Sentry has removed 2007 UR51 as an impact risk - see above Noted that JPL Sentry has updated its 2007 US51 risk assessment - see above Grabbed MPEC 2007-V11 - Comet P/2007 T2 (Kowalski) - see above Grabbed MPEC 2007-V12 - Comet C/2007 T5 (Gibbs) - see above
1407	Noted that NEODyS has updated its 2007 UN12 risk assessment - see above Noted that NEODyS has removed 2007 UR51 as an impact risk - see above Noted that NEODyS has updated its 2007 US51 risk assessment - see above Noted that JPL Sentry has updated its 2007 UY1 risk assessment - see above Noted that JPL Sentry has updated its 2007 VG risk assessment - see above
1128	Noted that NEODyS has removed 2007 TH72 as an impact risk - see above Noted that JPL Sentry has updated its 2007 UD6 risk assessment - see above Noted that JPL Sentry has updated its 2007 UN12 risk assessment - see above Noted that NEODyS has posted 2007 VG as an impact risk - see above Grabbed MPEC 2007-V10 - Daily Orbit Update - see above

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