Contents  on 25 November '09

Resources:

The latest A/CC news is available via framed access, RSS news feed 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 25 November '09

The MPC's NEO Confirmation Page has 13 listings: 4 new, 9 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had four new and nine updated listings. Of these, ten were "one nighters." So far The Tracking News has counted a total of 20 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 25 November '09

Minor Planet Electronic Circulars

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


MPEC 2009-W116 - "23:18 UT" - 2009 WM105


MPEC 2009-W115 - "20:57 UT" - 2009 VY25


MPEC 2009-W114 - "18:05 UT" - 2009 WB105


MPEC 2009-W113 - "18:00 UT" - 2009 WA105


MPEC 2009-W112 - "17:54 UT" - 2009 WZ104


MPEC 2009-W111 - "17:35 UT" - 2009 CR5


MPEC 2009-W110 - "16:31 UT" - 2009 WY104


MPEC 2009-W109 - "16:26 UT" - 2009 WX104


MPEC 2009-W108 - "16:22 UT" - 2009 WW104


<< DOU on 25 Nov. '09 >>  MPEC 2009-W107 - "07:12 UT" - Daily Orbit Update


MPEC 2009-W106 - "00:07 UT" - 2009 WH104


MPEC 2009-W105 - "00:05 UT" - 2009 WG104


MPEC 2009-W104 - "00:00 UT" - 2009 WF104

Observers  on 25 November '09

A total of 26 observing facilities appear in today's MPECs.

CodeObserver / observatory
B03Alter Satzberg Obs. in Austria, 1 in MPEC 2009-W112 -- 2009 WZ104
H21Astronomical Research Obs. Westfield (ARO Westfield) in Illinois, 13 in MPEC 2009-W107 -- 2009 WW7, 2009 WR6, 2009 WN6, 2009 WM1, 2009 WJ1, 2009 WE, 2009 WA, 2009 VA1, 2009 UP5, 2009 TC8, 2009 SO103, 2009 SF2, 2009 QG34
J51Atlante Obs. in the Canary Islands, 3 in MPEC 2009-W107 -- 2009 WN25, 2005 RQ6, 217807
300Bisei Spaceguard Center in Japan, 1 in MPEC 2009-W114 -- 2009 WB105
703Catalina Sky Survey (CSS) in Arizona, 8 in MPECs 2009-W107, 2009-W112, 2009-W113, 2009-W114 & 2009-W116 -- 2009 WZ104, 2009 WM105, 2009 WB105, 2009 WA105, 2009 SX1, 2009 JL1, 66272, 162181
448Desert Moon Obs. in New Mexico, 5 in MPEC 2009-W107 -- 2009 WR6, 2009 WL1, 2009 UX17, 2002 VC92, 142563
683Goodricke-Pigott Obs. in Arizona, 1 in MPEC 2009-W107 -- 21088
651Grasslands Obs. in Arizona, 1 in MPEC 2009-W106 -- 2009 WH104
J95Great Shefford Obs. in England, 1 in MPEC 2009-W116 -- 2009 WM105
704LINEAR in New Mexico, 10 in MPECs 2009-W105, 2009-W107 & 2009-W108 -- 2009 WW104, 2009 WL1, 2009 WG104, 2009 ST19, 2009 MX6, 2001 WW1, 96189, 85804, 22771, 2212
J75La Sagra Obs. in Spain, 5 in MPEC 2009-W107 -- 2009 WR25, 2006 WN1, 99248, 215188, 162273
J38La Vara Obs. in Spain, 1 in MPEC 2009-W107 -- 4015
H01Magdalena Ridge Obs. (MRO) in New Mexico, 5 in MPECs 2009-W106, 2009-W107 & 2009-W110 -- 2009 WY104, 2009 WV51, 2009 WV25, 2009 WH104, 2009 WA54
G96Mt. Lemmon Survey (MLS) in Arizona, 12 in MPECs 2009-W104, 2009-W106, 2009-W107, 2009-W108, 2009-W109 & 2009-W110 -- 2009 WY104, 2009 WX104, 2009 WW104, 2009 WV25, 2009 WR52, 2009 WH104, 2009 WF104, 2005 UK1, 217683, 162273, 162168, 138852
B49Paus Obs. in Spain, 2 in MPEC 2009-W107 -- 2009 WV25, 2009 ST19
D29Purple Mtn. Obs. Xuyi Station in China, 1 in MPEC 2009-W107 -- 2009 NA
H06|H. Sato in Japan via RAS Obs. Mayhill in New Mexico, 2 in MPEC 2009-W107 -- 4015, 3552
854Sabino Canyon Obs. in Arizona, 3 in MPECs 2009-W108, 2009-W113 & 2009-W114 -- 2009 WW104, 2009 WB105, 2009 WA105
H36Sandlot Obs. in Kansas, 2 in MPECs 2009-W108 & 2009-W113 -- 2009 WW104, 2009 WA105
B74Santa Maria de Montmagastrell Obs. in Spain, 1 in MPEC 2009-W107 -- 2009 WN25
204Schiaparelli Obs. in Italy, 4 in MPECs 2009-W107 & 2009-W112 -- 2009 WZ104, 2009 WX7, 2008 WB59, 2006 VT2
691Spacewatch 0.9m telescope in Arizona, 9 in MPECs 2009-W107 & 2009-W115 -- 2009 WC11, 2009 VZ25, 2009 VY25, 2009 US87, 2006 WN1, 2001 WT1, 2001 SG286, 2001 RE8, 2000 WS67
291Spacewatch 1.8m telescope in Arizona, 11 in MPECs 2009-W107 & 2009-W115 -- 2009 WT25, 2009 WQ25, 2009 WM1, 2009 WC11, 2009 WB54, 2009 VZ25, 2009 VY25, 2009 VT, 2009 TB3, 2003 QH5, 1996 XB27
926Tenagra II Obs. in Arizona, 15 in MPECs 2009-W104, 2009-W106, 2009-W107, 2009-W108, 2009-W109, 2009-W111 & 2009-W116 -- 2009 WY7, 2009 WX51, 2009 WX104, 2009 WW104, 2009 WV7, 2009 WV25, 2009 WS52, 2009 WQ52, 2009 WN6, 2009 WN25, 2009 WM105, 2009 WH104, 2009 WF104, 2009 WE, 2009 CR5
B18Terskol Obs. in Russia, 3 in MPECs 2009-W104, 2009-W105 & 2009-W106 -- 2009 WH104, 2009 WG104, 2009 WF104
G56Walnut Creek Obs. in northern California, 2 in MPEC 2009-W107 -- 2009 WX51, 2009 ST19
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 25 November '09

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.
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 WG104NEODyS15322012-2065221.59e-09-5.30-5.690NEODyS: "Based on 9 optical observations (of which 0 are rejected as outliers) from 2009/11/24.194 to 2009/11/24.939."
JPL Sentry05342020-208258.0e-10-6.26-6.500JPL: "Analysis based on 9 observations spanning .74499 days (2009-Nov-24.19288 to 2009-Nov-24.93787)." Diameter approximately 0.350 km. from mean, weighted H=19.9.
2009 WF104NEODyS15192016-2052162.87e-10-4.25-4.840NEODyS: "Based on 13 optical observations (of which 0 are rejected as outliers) from 2009/11/23.372 to 2009/11/24.915."
2009 WZ53NEODyS15192015-2088391.03e-07-5.66-5.800NEODyS: "Based on 18 optical observations (of which 0 are rejected as outliers) from 2009/11/23.282 to 2009/11/24.457."
2009 WR52NEODyS15322031-2089433.09e-05-6.30-6.550NEODyS: "Based on 15 optical observations (of which 0 are rejected as outliers) from 2009/11/23.220 to 2009/11/24.226."
JPL Sentry15192031-21091714.7e-05-6.16-6.490JPL: "Analysis based on 15 observations spanning 1.0061 days (2009-Nov-23.21917 to 2009-Nov-24.22527)." Diameter approximately 0.007 km. from mean, weighted H=28.3.
2009 WQ52JPL Sentry1519203712.5e-06-6.75-6.750JPL: "Analysis based on 17 observations spanning 1.1955 days (2009-Nov-23.19879 to 2009-Nov-24.39432)." Diameter approximately 0.008 km. from mean, weighted H=28.1.
NEODyS1519203713.17e-06-6.64-6.640NEODyS: "Based on 17 optical observations (of which 0 are rejected as outliers) from 2009/11/23.200 to 2009/11/24.395."
2009 WX51NEODyS15322034-2087216.56e-08-4.59-5.250NEODyS: "Based on 29 optical observations (of which 0 are rejected as outliers) from 2009/11/22.250 to 2009/11/25.279."
JPL Sentry15192034-2105215.8e-08-4.68-5.320JPL: "Analysis based on 29 observations spanning 3.0285 days (2009-Nov-22.24934 to 2009-Nov-25.27786)." Diameter approximately 0.309 km. from mean, weighted H=20.2.
2009 WQ25JPL Sentry15192051-209431.1e-07-6.35-6.600JPL: "Analysis based on 26 observations spanning 3.9900 days (2009-Nov-21.16281 to 2009-Nov-25.15286)." Diameter approximately 0.055 km. from mean, weighted H=23.9.
NEODyS15192051-209024.02e-08-6.59-6.590NEODyS: "Based on 27 optical observations (of which 1 are rejected as outliers) from 2009/11/21.164 to 2009/11/25.154."
2009 WN25JPL Sentry1519203812.9e-10-5.40-5.400JPL: "Analysis based on 70 observations spanning 2.7676 days (2009-Nov-22.1489 to 2009-Nov-24.91653)." Diameter approximately 0.750 km. from mean, weighted H=18.3.
NEODyS1519R E M O V E D-
2009 WW7JPL Sentry15192050-2108272.3e-05-6.84-7.100JPL: "Analysis based on 31 observations spanning 3.9974 days (2009-Nov-19.23811 to 2009-Nov-23.23546)." Diameter approximately 0.006 km. from mean, weighted H=28.9.
NEODyS15192050-2089141.39e-05-7.00-7.090NEODyS: "Based on 32 optical observations (of which 2 are rejected as outliers) from 2009/11/19.239 to 2009/11/23.236."
2009 WM1JPL Sentry20012018-21091452.8e-04-0.76-0.991JPL #2 for the day: "Analysis based on 55 observations spanning 7.0047 days (2009-Nov-17.4641 to 2009-Nov-24.4688)." Diameter approximately 0.280 km. from mean, weighted H=20.4.
NEODyS15322018-20901662.54e-04-0.79-1.021NEODyS: "Based on 55 optical observations (of which 0 are rejected as outliers) from 2009/11/17.465 to 2009/11/24.470. NOTE: The Virtual Impactors in 2018/11/22.955 and 2027/11/23.216 ... are rated as Torino Scale 1."
2009 WJ1NEODyS15322057-208035.93e-08-5.41-5.690NEODyS: "Based on 43 optical observations (of which 0 are rejected as outliers) from 2009/11/17.110 to 2009/11/24.069."
JPL Sentry15192078-210935.9e-08-5.44-5.670JPL: "Analysis based on 43 observations spanning 6.9598 days (2009-Nov-17.10881 to 2009-Nov-24.06865)." Diameter approximately 0.204 km. from mean, weighted H=21.1.

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 25 November '09

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

2358Grabbed MPEC 2009-W116 - 2009 WM105 - see above
2207Grabbed MPEC 2009-W115 - 2009 VY25 - see above
2001Noted that JPL Sentry has reposted 2009 WM1 as an impact risk - see above
1837Grabbed MPEC 2009-W114 - 2009 WB105 - see above
1808Grabbed MPEC 2009-W112 - 2009 WZ104 - see above
Grabbed MPEC 2009-W113 - 2009 WA105 - see above
1736Grabbed MPEC 2009-W111 - 2009 CR5 - see above
1702Grabbed MPEC 2009-W108 - 2009 WW104 - see above
Grabbed MPEC 2009-W109 - 2009 WX104 - see above
Grabbed MPEC 2009-W110 - 2009 WY104 - see above
1532Noted that NEODyS has updated its 2009 WJ1 risk assessment - see above
Noted that NEODyS has updated its 2009 WM1 risk assessment - see above
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-W107 - Daily Orbit Update - see above
1519Noted that NEODyS has posted 2009 WF104 as an impact risk - see above
Noted that NEODyS has posted 2009 WG104 as an impact risk - see above
Noted that JPL Sentry has updated its 2009 WJ1 risk assessment - see above
Noted that JPL Sentry has removed 2009 WM1 as an impact risk - see above
Noted that JPL Sentry has updated its 2009 WN25 risk assessment - see above
Noted that NEODyS has removed 2009 WN25 as an impact risk - see above
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 WQ52 risk assessment - see above
Noted that NEODyS has updated its 2009 WQ52 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 WW7 risk assessment - see above
Noted that NEODyS has updated its 2009 WW7 risk assessment - see above
Noted that JPL Sentry has updated its 2009 WX51 risk assessment - see above
Noted that NEODyS has posted 2009 WZ53 as an impact risk - see above
0534Noted that JPL Sentry has posted 2009 WG104 as an impact risk - see above
0018Grabbed MPEC 2009-W104 - 2009 WF104 - see above
Grabbed MPEC 2009-W105 - 2009 WG104 - see above
Grabbed MPEC 2009-W106 - 2009 WH104 - see above