Contents  on 19 November '09

Resources:

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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 19 November '09

The MPC's NEO Confirmation Page has 7 listings: 7 updated

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had seven updated listings. Of these, six were "one nighters." The Tracking News counted a total of 23 listings on the NEOCP at some point on this day.

New MPECs  on 19 November '09

Minor Planet Electronic Circulars

There were sixteen MPECs posted this day from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2009-W46 - "23:57 UT" - 2009 WG7


MPEC 2009-W45 - "23:50 UT" - 2009 WF7


MPEC 2009-W44 - "23:18 UT" - 2009 WD7


MPEC 2009-W43 - "21:40 UT" - 2009 WX6


MPEC 2009-W42 - "18:40 UT" - 2009 WR6


MPEC 2009-W41 - "18:36 UT" - 2009 WQ6


MPEC 2009-W40 - "18:32 UT" - 2009 WP6


MPEC 2009-W39 - "18:14 UT" - 2009 WO6


MPEC 2009-W38 - "18:09 UT" - 2009 WN6


MPEC 2009-W37 - "18:06 UT" - 2009 WM6


MPEC 2009-W36 - "18:02 UT" - 2009 WL6


MPEC 2009-W35 - "17:57 UT" - 2009 WK6


MPEC 2009-W34 - "17:39 UT" - Comet C/2009 W1 (Hill)


MPEC 2009-W33 - "14:14 UT" - 2009 WJ6


MPEC 2009-W32 - "12:58 UT" - 2007 WB


<< DOU on 19 Nov. '09 >>  MPEC 2009-W31 - "07:10 UT" - Daily Orbit Update

Observers  on 19 November '09

A total of 31 observing facilities appeared in this day's MPECs.

CodeObserver / observatory
B03Alter Satzberg Obs. in Austria, 1 in MPEC 2009-W31 -- 2009 VA1
J51Atlante Obs. in the Canary Islands, 1 in MPEC 2009-W31 -- 2005 RQ6
A74Bergen-Enkheim Obs. in Germany, 1 in MPEC 2009-W45 -- 2009 WF7
160Castelmartini Obs. in Italy, 1 in MPEC 2009-W43 -- 2009 WX6
703Catalina Sky Survey (CSS) in Arizona, 13 in MPECs 2009-W31, 2009-W33, 2009-W34, 2009-W39, 2009-W42 & 2009-W43 -- 2009 WX6, 2009 WR6, 2009 WO6, 2009 WJ6, C/2009 W1, 2009 TM10, 2009 TF10, 2002 XM90, 2002 WP, 1985 WA, 85709, 222073, 185716
448Desert Moon Obs. in New Mexico, 3 in MPEC 2009-W31 -- 2009 VO24, 2009 UP5, 85818
114Engelhardt Obs. Zelenchukskaya Station in Karachay-Cherkessia, 1 in MPEC 2009-W34 -- C/2009 W1
B21Gaisberg Obs. in Austria, 2 in MPECs 2009-W44 & 2009-W46 -- 2009 WG7, 2009 WD7
683Goodricke-Pigott Obs. in Arizona, 1 in MPEC 2009-W31 -- 2009 RN
379Hamamatsu-Yuto Obs. in Japan, 1 in MPEC 2009-W31 -- 2005 RQ6
B15Inastars Obs. in Germany, 1 in MPEC 2009-W43 -- 2009 WX6
G92Jarnac Obs. in Arizona, 1 in MPEC 2009-W31 -- 2009 WL1
704LINEAR in New Mexico, 10 in MPEC 2009-W31 -- 2009 WL1, 2007 VH186, 38091, 217683, 215188, 16816, 154244, 138852, 5626, 5131
J38La Vara Obs. in Spain, 1 in MPEC 2009-W31 -- 4015
H01Magdalena Ridge Obs. (MRO) in New Mexico, 10 in MPECs 2009-W31, 2009-W33, 2009-W35, 2009-W36, 2009-W37, 2009-W38, 2009-W40, 2009-W41 & 2009-W42 -- 2009 WR6, 2009 WQ6, 2009 WP6, 2009 WN6, 2009 WM6, 2009 WL6, 2009 WK6, 2009 WJ6, 2009 WE, 2009 WB
932McCarthy Obs. in Connecticut, 1 in MPEC 2009-W31 -- 2009 VW
B67Mirasteilas Obs. in Switzerland, 3 in MPEC 2009-W31 -- 2009 UE19, 2007 UR3, 2006 WN1
900Moriyama Obs. in Japan, 2 in MPECs 2009-W33 & 2009-W43 -- 2009 WX6, 2009 WJ6
474Mt. John Obs. in New Zealand, 1 in MPEC 2009-W39 -- 2009 WO6
G96Mt. Lemmon Survey (MLS) in Arizona, 16 in MPECs 2009-W31, 2009-W33, 2009-W34, 2009-W35, 2009-W36, 2009-W37, 2009-W38, 2009-W40, 2009-W41, 2009-W44, 2009-W45 & 2009-W46 -- 2009 WQ6, 2009 WP6, 2009 WN6, 2009 WM6, 2009 WL6, 2009 WK6, 2009 WJ6, 2009 WG7, 2009 WF7, 2009 WE, 2009 WD7, C/2009 W1, 2009 HB, 2005 SG19, 224926, 8035
J47Nazaret Obs. in Spain, 1 in MPEC 2009-W31 -- 4015
854Sabino Canyon Obs. in Arizona, 2 in MPECs 2009-W33 & 2009-W39 -- 2009 WO6, 2009 WJ6
H36Sandlot Obs. in Kansas, 4 in MPECs 2009-W33, 2009-W34, 2009-W35 & 2009-W42 -- 2009 WR6, 2009 WK6, 2009 WJ6, C/2009 W1
204Schiaparelli Obs. in Italy, 1 in MPEC 2009-W31 -- 2009 VZ
E12Siding Spring Survey (SSS) in New South Wales, 4 in MPECs 2009-W31, 2009-W32 & 2009-W39 -- 2009 WO6, 2009 OB3, 2009 HD21, 2007 WB
G68Sierra Stars Obs. in northern California, 1 in MPEC 2009-W39 -- 2009 WO6
691Spacewatch 0.9m telescope in Arizona, 3 in MPEC 2009-W31 -- 2007 UR3, 89136, 143404
291Spacewatch 1.8m telescope in Arizona, 8 in MPECs 2009-W31, 2009-W35, 2009-W36, 2009-W37, 2009-W38 & 2009-W40 -- 2009 WP6, 2009 WN6, 2009 WM6, 2009 WL6, 2009 WK6, 2009 WJ1, 2009 VA26, 2000 BO28
926Tenagra II Obs. in Arizona, 12 in MPECs 2009-W31, 2009-W33, 2009-W35, 2009-W36, 2009-W37, 2009-W38, 2009-W39, 2009-W45 & 2009-W46 -- 2009 WO6, 2009 WN6, 2009 WM6, 2009 WL6, 2009 WK6, 2009 WJ6, 2009 WG7, 2009 WF7, 2009 WC, 2009 WA, 2009 VZ, 2009 VC1
B18Terskol Obs. in Russia, 2 in MPECs 2009-W34 & 2009-W42 -- 2009 WR6, C/2009 W1
A79Zvezdno Obshtestvo Obs. in Bulgaria, 1 in MPEC 2009-W34 -- C/2009 W1
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 19 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 WR6JPL Sentry22322021-208282.2e-09-5.20-5.680JPL: "Analysis based on 24 observations spanning .95718 days (2009-Nov-18.50609 to 2009-Nov-19.46327)." Diameter approximately 0.690 km. from mean, weighted H=18.5.
2009 WP6JPL Sentry22322055-21091194.9e-05-4.95-5.620JPL: "Analysis based on 15 observations spanning .92628 days (2009-Nov-18.25267 to 2009-Nov-19.17895)." Diameter approximately 0.015 km. from mean, weighted H=26.8.
2009 WJ6JPL Sentry16002042-205647.8e-05-4.98-5.210JPL: "Analysis based on 28 observations spanning .30011 days (2009-Nov-19.26657 to 2009-Nov-19.56668)." Diameter approximately 0.011 km. from mean, weighted H=27.5.
2009 WM1NEODyS15082013-2090841.09e-05-2.30-2.980NEODyS: "Based on 25 optical observations (of which 0 are rejected as outliers) from 2009/11/17.465 to 2009/11/18.506."
2009 WJ1JPL Sentry15082061-210381.1e-08-6.20-6.650JPL: "Analysis based on 25 observations spanning 2.0310 days (2009-Nov-17.10881 to 2009-Nov-19.13986)." Diameter approximately 0.208 km. from mean, weighted H=21.1.
NEODyS1508205713.43e-10-7.39-7.390NEODyS: "Based on 25 optical observations (of which 0 are rejected as outliers) from 2009/11/17.110 to 2009/11/19.141."
2009 VA26JPL Sentry15082017-210771.3e-08-5.62-6.000JPL: "Analysis based on 37 observations spanning 7.8103 days (2009-Nov-11.38063 to 2009-Nov-19.19089)." Diameter approximately 0.210 km. from mean, weighted H=21.1.
NEODyS15082017-2086141.72e-08-5.52-5.910NEODyS: "Based on 37 optical observations (of which 0 are rejected as outliers) from 2009/11/11.381 to 2009/11/19.192."

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 19 November '09

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

0027 11/20Grabbed MPEC 2009-W46 - 2009 WG7 - see above
2358Grabbed MPEC 2009-W44 - 2009 WD7 - see above
Grabbed MPEC 2009-W45 - 2009 WF7 - see above
2232Noted that JPL Sentry has posted 2009 WP6 as an impact risk - see above
Noted that JPL Sentry has posted 2009 WR6 as an impact risk - see above
Grabbed MPEC 2009-W43 - 2009 WX6 - see above
1926Grabbed MPEC 2009-W40 - 2009 WP6 - see above
Grabbed MPEC 2009-W41 - 2009 WQ6 - see above
Grabbed MPEC 2009-W42 - 2009 WR6 - see above
1827Grabbed MPEC 2009-W34 - Comet C/2009 W1 (Hill) - see above
Grabbed MPEC 2009-W35 - 2009 WK6 - see above
Grabbed MPEC 2009-W36 - 2009 WL6 - see above
Grabbed MPEC 2009-W37 - 2009 WM6 - see above
Grabbed MPEC 2009-W38 - 2009 WN6 - see above
Grabbed MPEC 2009-W39 - 2009 WO6 - see above
1600Noted that JPL Sentry has posted 2009 WJ6 as an impact risk - see above
1508Noted that JPL Sentry has updated its 2009 VA26 risk assessment - see above
Noted that NEODyS has reposted 2009 VA26 as an impact risk - see above
Noted that JPL Sentry has updated its 2009 WJ1 risk assessment - see above
Noted that NEODyS has posted 2009 WJ1 as an impact risk - see above
Noted that NEODyS has posted 2009 WM1 as an impact risk - see above
Grabbed MPEC 2009-W31 - Daily Orbit Update - see above
Grabbed MPEC 2009-W32 - 2007 WB - see above
Grabbed MPEC 2009-W33 - 2009 WJ6 - see above