10 Nov '07 Tracking News

Contents on 10 November '07

IAU Minor Planet Center
- NEOCP Activity -- eleven listings: 1 new, 10 updated
- New MPECs -- two MPECs
- Observers -- 23 observing facilities
Impact Risk Monitoring -- six 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 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 10 November '07

The MPC's NEO Confirmation Page has 11 listings: 1 new, 10 updated

When last checked at 2340 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had one new and ten updated listings. Of these, three were "one nighters." So far The Tracking News has counted a total of fourteen 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 10 November '07

Minor Planet Electronic Circulars

As of last check at 2354 UTC, there have been two MPECs issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2007-V74 time-stamped "07:11 UT" - Daily Orbit Update - see below
MPEC 2007-V75 time-stamped "15:30 UT" - Comet P/2007 V2 (Hill)

MPEC 2007-V75 - "15:30 UT" - Comet P/2007 V2 (Hill)

PK07V020 P/2007 V2 (q=2.749 AU, Q=5.382 AU, TP=2007 July 31.744 TT) from the Spacewatch 0.9m telescope (Oct. 14.32-35p3), the Mt. Lemmon Survey (MLS) (Nov. 9.30-32p4, 9.40-42p5 & 10.27p4), CAST Obs. (Nov. 9.83-85p2), Remanzacco Obs. (Nov. 9.90-92p2), Suno Obs. (Nov. 9.99-02p3), Table Mtn. Obs. (Nov. 10.24-28p4), McDonald Obs. (Nov. 10.38-40p3), and Mt. John Obs. (Nov. 10.51-52p3)

<< DOU on 10 Nov. '07 >> MPEC 2007-V74 - "07:11 UT" - Daily Orbit Update

Observations of risk-listed objects
K07V84O 2007 VO84 (small asteroid, arc=1 day, H=23.6 ~65m) from the Spacewatch 1.8m telescope (Nov. 9.22p3)
K07V08E 2007 VE8 (small asteroid, arc=3 days, H=25.4 ~28m) from Astronomical Research Obs. (ARO) (Nov. 7.26p3)
K07V03J 2007 VJ3 (small asteroid, arc=7 days, H=24.9 ~35m) from ARO (Nov. 7.35-38p3) and Spacewatch 1.8m (Nov. 9.36-37p3)
K07U51S 2007 US51 (small asteroid, arc=7 days, H=27.2 ~12m) from ARO (Nov. 7.29-32p3 at V=22.1-2)
K07U12N 2007 UN12 (small asteroid, arc=19 days, H=28.7 ~6m) from Spacewatch 1.8m (Nov. 9.21p2)
Observations of recently (no longer) risk-listed objects
K07V12D 2007 VD12 (arc=4 days, H=20.1 ~323m) from Spacewatch 1.8m (Nov. 9.33-34p3), McDonald Obs. (Nov. 9.38-39p2), and Shenton Park Obs. (Nov. 9.68p2)
K07V03H 2007 VH3 (small asteroid, arc=5 days, H=22.3 ~117m) from ARO (Nov. 7.27-29p3)
K07V03A 2007 VA3 (small asteroid, arc=5 days, H=25.9 ~22m) from ARO (Nov. 7.16p3)
K07U00H 2007 UH (almost small, arc=28 days, H=22.0 ~135m) from the Siding Spring Survey (SSS) (Nov. 8.59p2)
K07T71D 2007 TD71 (i=49.8°, arc=27 days, H=18.5 ~676m) from SSS (Nov. 8.58p1 & 9.59p1)
K07T66C 2007 TC66 (arc=27 days, H=19.4 ~446m) from SSS (Nov. 8.58p1)
K07T18X 2007 TX18 (arc=31 days, H=17.3 ~1.17 km) from LINEAR (Nov. 9.25-30p5)
Observations of small asteroids (H>22.0)
K07V83W 2007 VW83 (arc=2 days, H=24.2 ~49m) from McDonald Obs. (Nov. 9.27-28p3)
K07V83V 2007 VV83 (arc=2 days, H=24.7 ~39m) from MLS (Nov. 9.24-25p4) and Mt. John Obs. (Nov. 9.47-48p3)
K07V29R 2007 VR29 (arc=3 days, H=24.5 ~43m) from Mt. John Obs. (Nov. 9.41-42p3)
K07V08K 2007 VK8 (arc=3 days, H=23.1 ~81m) from ARO (Nov. 7.32p3)
K07V08F 2007 VF8 (arc=5 days, H=22.5 ~107m) from LINEAR (Nov. 9.14-18p5) and the Catalina Sky Survey (CSS) (Nov. 9.19-21p4 & 9.27p3)
K07V07W 2007 VW7 (arc=4 days, H=25.2 ~31m) from ARO (Nov. 7.16-17p3)
K07V06V 2007 VV6 (arc=4 days, H=24.7 ~39m) from ARO (Nov. 7.14p3)
K07V06U 2007 VU6 (arc=6 days, H=26.5 ~17m) from ARO (Nov. 7.20-21p3) and MLS (Nov. 9.27-29p4)
K07V03L 2007 VL3 (arc=7 days, H=26.1 ~20m) from ARO (Nov. 7.18-19p3) and MLS (Nov. 9.27-29p4)
K07V03D 2007 VD3 (arc=6 days, H=22.2 ~123m) from ARO (Nov. 7.30-31p3)
K07U65T 2007 UT65 (arc=7 days, H=24.3 ~47m) from ARO (Nov. 7.23-24p3)
K07U40K 2007 UK40 (arc=10 days, H=23.4 ~71m) from Thompsonville Obs. (Nov. 10.11-13p6)
K07U06P 2007 UP6 (arc=17 days, H=23.1 ~81m) from Lumezzane Obs. (Nov. 8.12p4)
K07U06G 2007 UG6 (arc=18 days, H=23.0 ~85m) from SSS (Nov. 8.75p2)
Observations of almost-small asteroids (21.7<H<=22.0)
K07V08H 2007 VH8 (Q=4.097 AU, arc=3 days, H=21.8 ~148m) from ARO (Nov. 7.13p3)
K07V03K 2007 VK3 (arc=5 days, H=21.9 ~141m) from ARO (Nov. 7.23p3)
Observations of other objects
K07V08L 2007 VL8 (arc=4 days, H=21.3 ~186m) from ARO (Nov. 7.25p3), Mt. John Obs. (Nov. 9.49-51p4), and Shenton Park Obs. (Nov. 9.66p2)
K07V06X 2007 VX6 (i=41.3°, arc=4 days, H=20.8 ~234m) from ARO (Nov. 7.38p3)
K07V06T 2007 VT6 (arc=4 days, H=20.2 ~309m) from ARO (Nov. 7.22p3)
K07V04Q 2007 VQ4 (arc=6 days, H=15.9 ~2.24 km, q=1.268 AU) from ARO (Nov. 7.36-37p3) and LINEAR (Nov. 9.38-43p4)
K07V03N 2007 VN3 (arc=6 days, H=21.3 ~186m) from CSS (Nov. 9.22-27p8) and Spacewatch 1.8m (Nov. 9.24p3)
K07U51Q 2007 UQ51 (arc=9 days, H=20.3 ~295m) from SSS (Nov. 9.44p1)
K07U13Q 2007 UQ13 (arc=8 days, H=19.8 ~371m) from ARO (Nov. 7.15p3)
K07U06S 2007 US6 (arc=25 days, H=18.3 ~741m) from Saint-Barthelemy Obs. (Nov. 8.80-82p4)
K07U03R 2007 UR3 (arc=31 days, H=21.3 ~186m) from McDonald Obs. (Nov. 9.24-27p3)
K07T19J 2007 TJ19 (i=40.6°, arc=29 days, H=20.9 ~224m) from SSS (Nov. 8.56-57p2)
K07T19A 2007 TA19 (arc=31 days, H=19.6 ~407m) from SSS (Nov. 9.45p1)
K07T18Z 2007 TZ18 (arc=30 days, H=21.0 ~214m) from ARO (Nov. 7.34-35p2)
K07T15G 2007 TG15 (arc=33 days, H=19.6 ~407m) from Thompsonville Obs. (Nov. 10.23-25p6)
K07L32R 2007 LR32 (arc=169 days, H=17.2 ~1.23 km) from New Millennium Obs. (Nov. 3.88-91p6) and Thompsonville Obs. (Nov. 10.19-20p6)
K07G00G 2007 GG (Q=4.135 AU, arc=2 opp, H=17.5 ~1.07 km) from NEAT's USAF Haleakala telescope (2006 Sept. 20.27-28p2)
K07D08L 2007 DL8 (Q=4.699 AU, arc=2 opp, H=17.3 ~1.17 km) from SSS (Nov. 9.60-63p4)
K06S19S 2006 SS19 (Q=4.412 AU, arc=57 days, H=18.8 ~589m) from NEAT/Hawaii (2006 Sept. 18.46-48p3)
K04T16Y 2004 TY16 (arc=4 opp, H=17.0 ~1.35 km) from CSS (Nov. 9.43-45p4)
K02U31A 2002 UA31 (arc=4 opp, H=19.0 ~537m) from MLS (Nov. 9.13p4)
K01U16Y 2001 UY16 (arc=3 opp, H=19.2 ~490m) from Lumezzane Obs. (Nov. 8.77-79p4)
K01R47Y 2001 RY47 (arc=3 opp, H=19.5 ~426m) from CSS (Nov. 9.16-18p4)
K01F06Z 2001 FZ6 (arc=4 opp, H=18.4 ~708m) from LINEAR (Nov. 9.39-42p3)
K00SG2Y 2000 SY162 (arc=2 opp, H=19.2 ~490m) from Purple Mtn. Obs. XuYi Station (Nov. 9.82-87p4)
K00S08B 2000 SB8 (arc=2 opp, H=19.0 ~537m) from McDonald Obs. (Nov. 9.42-44p3)
J99A10Q 1999 AQ10 (arc=3 opp, H=20.4 ~282m) from Lumezzane Obs. (Nov. 8.13p4)
J94A01W 1994 AW1 (arc=3 opp, H=17.4 ~1.12 km) from CSS (Nov. 9.52-53p4)
G2173 162173 1999 JU3 from CSS (Nov. 9.11-13p4 & 9.19-21p3) and LINEAR (Nov. 9.14-18p4)
F2787 152787 1999 TB10 from CSS (Nov. 9.22-24p4)
E5656 145656 4788 P-L from Thompsonville Obs. (Nov. 10.06-07p6)
E3678 143678 2003 SA224 from Crni Vrh Obs. (Nov. 9.97-00p4)
D8971 138971 2001 CB21 from LINEAR (Nov. 9.06-11p5)
D8883 138883 2000 YL29 from Thompsonville Obs. (Nov. 10.02-03p6)
D7084 137084 1998 XS16 from New Millennium Obs. (Nov. 3.77-83p6)
99907 99907 1989 VA from Malaga Obs. (Nov. 8.95-96p3)
86324 86324 1999 WA2 from New Millennium Obs. (Nov. 3.76-83p10)
66251 66251 1999 GJ2 from CSS (Nov. 9.40-42p4)
65706 65706 1992 NA from LINEAR (Nov. 9.44-48p5)
53426 53426 1999 SL5 from CSS (Nov. 9.22-23p4)
39796 39796 1997 TD from SSS (Nov. 9.41-43p4)
36236 36236 1999 VV from LINEAR (Nov. 9.33-37p4)
31346 31346 1998 PB1 from LINEAR (Nov. 9.32-35p3)
17182 17182 1999 VU from LINEAR (Nov. 9.19-24p5)
16636 16636 1993 QP from CSS (Nov. 9.22-24p4)
04954 4954 Eric (1990 SQ) from Mt. Tuffley Obs. (Nov. 8.95p2)
04486 4486 Mithra (1987 SB) from MLS (Nov. 9.30-32p4 & 9.42-43p4)
03553 3553 Mera (1985 JA) from LINEAR (Nov. 9.25-30p5) and CSS (Nov. 9.31-32p4)
01865 1865 Cerberus (1971 UA) from LINEAR (Nov. 9.39-43p3)
01620 1620 Geographos (1951 RA) from LINEAR (Nov. 9.44-49p5)

Observers on 10 November '07

A total of 23 observing facilities appear in today's MPECs.

Code	Observer / observatory
`H55`	Astronomical Research Obs. (ARO) in Illinois, 20 in MPEC 2007-V74 -- 2007 VX6, 2007 VW7, 2007 VV6, 2007 VU6, 2007 VT6, 2007 VQ4, 2007 VL8, 2007 VL3, 2007 VK8, 2007 VK3, 2007 VJ3, 2007 VH8, 2007 VH3, 2007 VE8, 2007 VD3, 2007 VA3, 2007 UT65, 2007 US51, 2007 UQ13, 2007 TZ18
`235`	CAST Obs. in Italy, 1 in MPEC 2007-V75 -- P/2007 V2
`703`	Catalina Sky Survey (CSS) in Arizona, 11 in MPEC 2007-V74 -- 2007 VN3, 2007 VF8, 2004 TY16, 2001 RY47, 1994 AW1, 66251, 53426, 16636, 162173, 152787, 3553
`106`	Crni Vrh Obs. in Slovenia, 1 in MPEC 2007-V74 -- 143678
`704`	LINEAR in New Mexico, 13 in MPEC 2007-V74 -- 2007 VQ4, 2007 VF8, 2007 TX18, 2001 FZ6, 65706, 36236, 31346, 17182, 162173, 138971, 3553, 1865, 1620
`130`	Lumezzane Obs. in Italy, 3 in MPEC 2007-V74 -- 2007 UP6, 2001 UY16, 1999 AQ10
`J40`	Malaga Obs. in Spain, 1 in MPEC 2007-V74 -- 99907
`711`	McDonald Obs. in Texas, 5 in MPECs 2007-V74 & 2007-V75 -- 2007 VW83, 2007 VD12, P/2007 V2, 2007 UR3, 2000 SB8
`474`	Mt. John Obs. in New Zealand, 4 in MPECs 2007-V74 & 2007-V75 -- 2007 VV83, 2007 VR29, 2007 VL8, P/2007 V2
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 6 in MPECs 2007-V74 & 2007-V75 -- 2007 VV83, 2007 VU6, 2007 VL3, P/2007 V2, 2002 UA31, 4486
`J93`	Mt. Tuffley Obs. in England, 1 in MPEC 2007-V74 -- 4954
`608`	NEAT's USAF Haleakala telescope in Hawaii, 2 in MPEC 2007-V74 -- 2007 GG, 2006 SS19
`A24`	New Millennium Obs. in Italy, 3 in MPEC 2007-V74 -- 2007 LR32, 86324, 137084
`D29`	Purple Mtn. Obs. XuYi Station in China, 1 in MPEC 2007-V74 -- 2000 SY162
`473`	Remanzacco Obs. in Italy, 1 in MPEC 2007-V75 -- P/2007 V2
`B04`	Saint-Barthelemy Obs. in Italy, 1 in MPEC 2007-V74 -- 2007 US6
`D21`	Shenton Park Obs. in Western Australia, 2 in MPEC 2007-V74 -- 2007 VL8, 2007 VD12
`E12`	Siding Spring Survey (SSS) in New South Wales, 9 in MPEC 2007-V74 -- 2007 UQ51, 2007 UH, 2007 UG6, 2007 TJ19, 2007 TD71, 2007 TC66, 2007 TA19, 2007 DL8, 39796
`691`	Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2007-V75 -- P/2007 V2
`291`	Spacewatch 1.8m telescope in Arizona, 5 in MPEC 2007-V74 -- 2007 VO84, 2007 VN3, 2007 VJ3, 2007 VD12, 2007 UN12
`147`	Suno Obs. in Italy, 1 in MPEC 2007-V75 -- P/2007 V2
`673`	Table Mtn. Obs. in southern California, 1 in MPEC 2007-V75 -- P/2007 V2
`H53`	Thompsonville Obs., 5 in MPEC 2007-V74 -- 2007 UK40, 2007 TG15, 2007 LR32, 145656, 138883

Impact Risk Monitoring on 10 November '07

**Summary Risk Table for Risk Assessments Updated Today** (last checks: NEODyS and JPL at 2354 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 VA85	NEODyS	1204	2048-2089	10	3.34e-09	-2.84	-3.43	0	NEODyS: "Based on 55 optical observations (of which 1 are rejected as outliers) from 2007/11/04.090 to 2007/11/09.059."

2007 VO84	JPL Sentry	1550	R E M O V E D						JPL: Risk listing removed at 1425 UTC.
2007 VO84	NEODyS	1203	R E M O V E D

2007 VE8	JPL Sentry	1335	2062	1	2.2e-05	-4.99	-4.99	0	JPL: "Analysis based on 24 observations spanning 3.1025 days (2007-Nov-05.3392 to 2007-Nov-08.44173)." Diameter approximately 0.028 km. from mean, weighted H=25.4.
2007 VE8	NEODyS	1204	2062	1	2.08e-05	-5.02	-5.02	0	NEODyS: "Based on 25 optical observations (of which 1 are rejected as outliers) from 2007/11/05.340 to 2007/11/08.442."

2007 VJ3	JPL Sentry	1550	2099	1	6.9e-09	-8.24	-8.24	0	JPL: "Analysis based on 40 observations spanning 6.8645 days (2007-Nov-02.5055 to 2007-Nov-09.36998)." Diameter approximately 0.036 km. from mean, weighted H=24.9.

2007 US51	NEODyS	1204	2079-2082	6	1.48e-06	-6.96	-7.00	0	NEODyS: "Based on 42 optical observations (of which 1 are rejected as outliers) from 2007/10/31.385 to 2007/11/07.316."
2007 US51	JPL Sentry	1203	2082-2102	4	2.3e-06	-6.78	-6.88	0	JPL: "Analysis based on 42 observations spanning 6.9310 days (2007-Oct-31.38411 to 2007-Nov-07.31507)." Diameter approximately 0.012 km. from mean, weighted H=27.2.

2007 UN12	NEODyS	1229	2069-2090	22	6.95e-05	-6.38	-7.13	0	NEODyS: "Based on 117 optical observations (of which 0 are rejected as outliers) from 2007/10/21.373 to 2007/11/09.211."
2007 UN12	JPL Sentry	1203	2069-2107	25	2.3e-04	-5.94	-6.73	0	JPL: "Analysis based on 117 observations spanning 18.837 days (2007-Oct-21.37247 to 2007-Nov-09.20987)." Diameter approximately 0.006 km. from mean, weighted H=28.7.

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 10 November '07

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

1921	Grabbed MPEC 2007-V75 - Comet P/2007 V2 (Hill) - see above
1550	Noted that JPL Sentry has updated its 2007 VJ3 risk assessment - see above Noted that JPL Sentry has removed 2007 VO84 as an impact risk - see above
1335	Noted that JPL Sentry has updated its 2007 VE8 risk assessment - see above
1229	Noted that NEODyS has updated its 2007 UN12 risk assessment - see above
1204	Noted that NEODyS has updated its 2007 US51 risk assessment - see above Noted that NEODyS has updated its 2007 VE8 risk assessment - see above Grabbed MPEC 2007-V74 - Daily Orbit Update - see above
1203	Noted that JPL Sentry has updated its 2007 UN12 risk assessment - see above Noted that JPL Sentry has updated its 2007 US51 risk assessment - see above Noted that NEODyS has posted 2007 VA85 as an impact risk - see above Noted that NEODyS has removed 2007 VO84 as an impact risk - see above

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