2009-11-29 Tracking News

Contents on 29 November '09

IAU Minor Planet Center
- NEOCP Activity -- three listings: 3 updated
- New MPECs -- two MPECs
Observers -- sixteen observing facilities
Impact Risk Monitoring -- three objects
Chronology

Resources:

Consolidated Risk Tables - the CRT page
Earth's Busy Neighborhood Traffic Report
Ephemerides for risk-rated and nearby objects
News image catalog
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 29 November '09

The MPC's NEO Confirmation Page has 3 listings: 3 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had three updated listings. Of these, two were "one nighters." So far The Tracking News has counted a total of four listings on the NEOCP at some point today.

To learn how observers use the NEOCP, see the Practical guide on how to observe NEOCP object at Suno Observatory by Birtwhistle et al.

New MPECs on 29 November '09

Minor Planet Electronic Circulars

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

MPEC 2009-W136 time-stamped "07:13 UT" - Daily Orbit Update - see below
MPEC 2009-W137 time-stamped "17:25 UT" - 2003 BU35

MPEC 2009-W137 - "17:25 UT" - 2003 BU35

K03B35U 2003 BU35 (q=1.734 AU, Q=5.751 AU, H=16.3 ~1.86 km) from the Catalina Sky Survey (CSS) (Nov. 19.38-41p4) and the Mt. Lemmon Survey (MLS) (Nov. 25.42-44p4)

<< DOU on 29 Nov. '09 >> MPEC 2009-W136 - "07:13 UT" - Daily Orbit Update

Observations of risk-listed objects
K09W52R 2009 WR52 (small asteroid, arc=4 days, H=28.3 ~7m) from the Spacewatch 1.8m telescope (Nov. 27.14-15p3)
K09W51X 2009 WX51 (Q=5.332 AU, arc=7 days, H=20.1 ~323m) from Astronomical Research Obs. Westfield (ARO Westfield) (Nov. 28.26-27p3), Cordell-Lorenz Obs. (Nov. 28.30-34p7), and McCarthy Obs. (Nov. 28.99-00p2 & 29.24p3)
K09W25Q 2009 WQ25 (small asteroid, Q=4.099 AU, arc=6 days, H=23.9 ~56m) from Spacewatch 1.8m (Nov. 27.12p2)
Observations of recently (no longer) risk-listed objects
K09WA5A 2009 WA105 (small asteroid, Q=4.037 AU, arc=4 days, H=23.9 ~56m) from Alter Satzberg Obs. (Nov. 28.76-78p5) and McCarthy Obs. (Nov. 28.96p3)
K09WA4G 2009 WG104 (arc=4 days, H=20.2 ~309m) from ARO Westfield (Nov. 28.13-14p3)
K09W25N 2009 WN25 (i=71.6°, Q=4.998 AU, arc=7 days, H=18.3 ~741m) from H. Sato via RAS Obs. Mayhill (Nov. 25.14p2 & 28.08-09p3), ARO Westfield (Nov. 28.05-06p5), and McCarthy Obs. (Nov. 29.02-03p3)
K09W00F 2009 WF (arc=13 days, H=19.9 ~355m) from ARO Westfield (Nov. 28.33-34p3), Petit Jean Mtn. South Obs. (PJMSO) (Nov. 28.40p6), and Naef Obs. (Nov. 28.81-83p2)
K09V26A 2009 VA26 (i=39.3°, arc=16 days, H=20.7 ~245m) from Spacewatch 1.8m (Nov. 27.29-30p2)
J98H03J 1998 HJ3 (arc=2 opp, H=18.8 ~589m) from McCarthy Obs. (Nov. 29.18-19p4)
Observations of small asteroids (H>22.0)
K09WA6P 2009 WP106 (arc=1 day, H=25.2 ~31m) from ARO Westfield (Nov. 28.19-20p3) and Tenagra II Obs. (Nov. 28.24p2)
K09WA6H 2009 WH106 (Q=4.066 AU, arc=2 days, H=22.5 ~107m) from ARO Westfield (Nov. 28.07-08p3)
K09WA5M 2009 WM105 (arc=4 days, H=23.0 ~85m) from Alter Satzberg Obs. (Nov. 28.97-00p3)
K09WA5B 2009 WB105 (i=38.4°, arc=4 days, H=23.3 ~74m) from ARO Westfield (Nov. 28.16-17p3), Tenagra II Obs. (Nov. 28.20p2), and McCarthy Obs. (Nov. 29.09-10p2)
K09W25V 2009 WV25 (arc=7 days, H=24.1 ~51m) from Great Shefford Obs. (Nov. 27.93-96p4), ARO Westfield (Nov. 28.18-19p5), PJMSO (Nov. 28.28-29p12), and McCarthy Obs. (Nov. 28.95p4)
K09W11C 2009 WC11 (arc=8 days, H=22.1 ~129m) from ARO Westfield (Nov. 28.28-29p3)
Observations of almost-small asteroids (21.7<H<=22.0)
K01W01W 2001 WW1 (arc=3 opp, H=22.0 ~135m) from McCarthy Obs. (Nov. 29.12-13p3)
Observations of other objects
K09WA6D 2009 WD106 (arc=4 days, H=18.7 ~616m) from McCarthy Obs. (Nov. 29.14-15p4)
K09WA4Z 2009 WZ104 (arc=4 days, H=20.6 ~257m) from ARO Westfield (Nov. 27.98-99p5), Alter Satzberg Obs. (Nov. 28.72-74p5), and McCarthy Obs. (Nov. 28.93-94p5)
K09WA4H 2009 WH104 (Q=4.068 AU, arc=4 days, H=21.0 ~214m) from Desert Moon Obs. (Nov. 28.16-21p3)
K09W54G 2009 WG54 (arc=2 days, H=21.0 ~214m) from MLS (Nov. 25.28p4)
K09W26C 2009 WC26 (arc=7 days, H=17.1 ~1.29 km) from Alter Satzberg Obs. (Nov. 28.86-91p4)
K09W25R 2009 WR25 (arc=7 days, H=21.6 ~162m) from ARO Westfield (Nov. 28.17-18p3)
K09W25P 2009 WP25 (q=0.318 AU, arc=7 days, H=19.7 ~389m) from ARO Westfield (Nov. 28.14-15p3)
K09W07Z 2009 WZ7 (arc=9 days, H=19.7 ~389m) from ARO Westfield (Nov. 28.30-31p3)
K09W01L 2009 WL1 (arc=11 days, H=18.5 ~676m) from ARO Westfield (Nov. 28.32-33p5) and Naef Obs. (Nov. 28.80-83p2)
K09W00A 2009 WA (arc=12 days, H=21.2 ~195m) from ARO Westfield (Nov. 27.99-00p4)
K09U28K 2009 UK28 (arc=33 days, H=19.7 ~389m) from Desert Moon Obs. (Nov. 28.11-13p3)
K09U05P 2009 UP5 (arc=39 days, H=19.2 ~490m) from ARO Westfield (Nov. 28.01-04p3)
K09SA3T 2009 ST103 (Q=4.630 AU, arc=3 opp, H=18.1 ~812m) from Desert Moon Obs. (Nov. 28.06-07p2)
K09SA3M 2009 SM103 (Q=4.414 AU, arc=64 days, H=16.8 ~1.48 km) from ARO Westfield (Nov. 28.09-11p3)
K09S19T 2009 ST19 (arc=74 days, H=18.3 ~741m) from McCarthy Obs. (Nov. 29.06-08p3)
K09R00N 2009 RN (Q=4.583 AU, arc=78 days, H=19.9 ~355m) from Tzec Maun Obs. Mayhill (Nov. 28.25p3), ARO Westfield (Nov. 28.35-37p4), and PJMSO (Nov. 28.38-39p6)
K09Q34D 2009 QD34 (arc=94 days, H=18.0 ~851m) from PJMSO (Nov. 28.30-31p6)
K09N00A 2009 NA (Q=4.129 AU, arc=150 days, H=17.6 ~1.02 km) from PJMSO (Nov. 28.34-35p6)
K09M06X 2009 MX6 (arc=157 days, H=19.2 ~490m) from PJMSO (Nov. 28.35-36p6)
K06U00R 2006 UR (arc=2 opp, H=19.2 ~490m) from PJMSO (Nov. 28.39p5) and McCarthy Obs. (Nov. 29.25-26p4)
K03G00A 2003 GA (arc=3 opp, H=21.1 ~204m) from MLS (Nov. 27.37-39p5)
K02W00P 2002 WP (arc=3 opp, H=18.3 ~741m) from McCarthy Obs. (Nov. 29.21p4)
K02A03F 2002 AF3 (arc=5 opp, H=17.7 ~977m) from McCarthy Obs. (Nov. 29.22-23p3)
K00CA1O 2000 CO101 (arc=2 opp, H=19.0 ~537m) from McCarthy Obs. (Nov. 28.97-98p3)
10115 10115 1992 SK from McCarthy Obs. (Nov. 29.20p3)
04015 4015 Wilson-Harrington (1979 VA) from Montcabre Obs. (Nov. 28.73p3) and Rodeno Obs. (Nov. 28.85p3)

Observers on 29 November '09

Sixteen observing facilities appear in today's MPECs.

Code	Observer / observatory
`B03`	Alter Satzberg Obs. in Austria, 4 in MPEC 2009-W136 -- 2009 WZ104, 2009 WM105, 2009 WC26, 2009 WA105
`H21`	Astronomical Research Obs. Westfield (ARO Westfield) in Illinois, 18 in MPEC 2009-W136 -- 2009 WZ7, 2009 WZ104, 2009 WX51, 2009 WV25, 2009 WR25, 2009 WP25, 2009 WP106, 2009 WN25, 2009 WL1, 2009 WH106, 2009 WG104, 2009 WF, 2009 WC11, 2009 WB105, 2009 WA, 2009 UP5, 2009 SM103, 2009 RN
`703`	Catalina Sky Survey in Arizona, 1 in MPEC 2009-W137 -- 2003 BU35
`850`	Cordell-Lorenz Obs. in Tennessee, 1 in MPEC 2009-W136 -- 2009 WX51
`448`	Desert Moon Obs. in New Mexico, 3 in MPEC 2009-W136 -- 2009 WH104, 2009 UK28, 2009 ST103
`J95`	Great Shefford Obs. in England, 1 in MPEC 2009-W136 -- 2009 WV25
`932`	McCarthy Obs. in Connecticut, 15 in MPEC 2009-W136 -- 2009 WZ104, 2009 WX51, 2009 WV25, 2009 WN25, 2009 WD106, 2009 WB105, 2009 WA105, 2009 ST19, 2006 UR, 2002 WP, 2002 AF3, 2001 WW1, 2000 CO101, 1998 HJ3, 10115
`213`	Montcabre Obs. in Spain, 1 in MPEC 2009-W136 -- 4015
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 3 in MPECs 2009-W136 & 2009-W137 -- 2009 WG54, 2003 GA, 2003 BU35
`A13`	Naef Obs. in Switzerland, 2 in MPEC 2009-W136 -- 2009 WL1, 2009 WF
`H45`	Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 7 in MPEC 2009-W136 -- 2009 WV25, 2009 WF, 2009 RN, 2009 QD34, 2009 NA, 2009 MX6, 2006 UR
`H06\|`	H. Sato in Japan via RAS Obs. Mayhill in New Mexico, 1 in MPEC 2009-W136 -- 2009 WN25
`939`	Rodeno Obs. in Spain, 1 in MPEC 2009-W136 -- 4015
`291`	Spacewatch 1.8m telescope in Arizona, 3 in MPEC 2009-W136 -- 2009 WR52, 2009 WQ25, 2009 VA26
`926`	Tenagra II Obs. in Arizona, 2 in MPEC 2009-W136 -- 2009 WP106, 2009 WB105
`H10`	Tzec Maun Obs. Mayhill in New Mexico, 1 in MPEC 2009-W136 -- 2009 RN

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

Impact Risk Monitoring on 29 November '09

**Summary Risk Table for Risk Assessments Updated Today** (last checks: JPL at 2358 and NEODyS at 2359 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.
The time horizon for JPL is 100 years from today and for NEODyS is usually the year 2090. Beginning Jan. 22nd, both are also posting impact solutions beyond 100 years for a few objects.
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

2009 WR52	NEODyS	1655	2031-2090	36	7.84e-05	-5.87	-6.00	0	NEODyS: "Based on 24 optical observations (of which 2 are rejected as outliers) from 2009/11/23.220 to 2009/11/27.153."
2009 WR52	JPL Sentry	1654	2031-2109	62	1.1e-04	-5.76	-5.94	0	JPL: "Analysis based on 23 observations spanning 3.9327 days (2009-Nov-23.21917 to 2009-Nov-27.15186)." Diameter approximately 0.007 km. from mean, weighted H=28.3.

2009 WX51	NEODyS	1655	2048	1	3.25e-10	-6.84	-6.84	0	NEODyS: "Based on 44 optical observations (of which 0 are rejected as outliers) from 2009/11/22.250 to 2009/11/29.243."
2009 WX51	JPL Sentry	1654	2048-2082	3	1.0e-09	-6.50	-6.64	0	JPL: "Analysis based on 44 observations spanning 6.9933 days (2009-Nov-22.24934 to 2009-Nov-29.24263)." Diameter approximately 0.322 km. from mean, weighted H=20.1.

2009 WQ25	JPL Sentry	1654	2051-2094	2	7.7e-08	-6.61	-6.74	0	JPL: "Analysis based on 28 observations spanning 5.9572 days (2009-Nov-21.16281 to 2009-Nov-27.11998)." Diameter approximately 0.055 km. from mean, weighted H=23.9.
2009 WQ25	NEODyS	1654	2051	1	3.24e-11	-9.67	-9.67	0	NEODyS: "Based on 29 optical observations (of which 1 are rejected as outliers) from 2009/11/21.164 to 2009/11/27.121."

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 29 November '09

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

1831	Grabbed MPEC 2009-W137 - 2003 BU35 - see above
1655	Noted that NEODyS has updated its 2009 WR52 risk assessment - see above Noted that NEODyS has updated its 2009 WX51 risk assessment - see above Grabbed MPEC 2009-W136 - Daily Orbit Update - see above
1654	Noted that JPL Sentry has updated its 2009 WQ25 risk assessment - see above Noted that NEODyS has updated its 2009 WQ25 risk assessment - see above Noted that JPL Sentry has updated its 2009 WR52 risk assessment - see above Noted that JPL Sentry has updated its 2009 WX51 risk assessment - see above

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