Contents  on 20 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 20 November '09

The MPC's NEO Confirmation Page has 9 listings: 2 new, 7 updated

When last checked at 2321 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had two new and seven updated listings. Of these, seven were "one nighters." So far The Tracking News has counted a total of 22 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 20 November '09

Minor Planet Electronic Circulars

As of last check at 2321 UTC, there have been eleven MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2009-W57 - "19:51 UT" - 2009 WO8


MPEC 2009-W56 - "18:48 UT" - 2009 WN8


MPEC 2009-W55 - "18:45 UT" - 2009 WM8


MPEC 2009-W54 - "15:39 UT" - 2009 WZ7


MPEC 2009-W53 - "15:32 UT" - 2009 WY7


MPEC 2009-W52 - "15:29 UT" - 2009 WX7


MPEC 2009-W51 - "15:20 UT" - 2009 WW7


MPEC 2009-W50 - "15:11 UT" - 2009 WV7


MPEC 2009-W49 - "13:59 UT" - 2009 VZ25


MPEC 2009-W48 - "12:55 UT" - 1998 HJ3


<< DOU on 20 Nov. '09 >>  MPEC 2009-W47 - "07:12 UT" - Daily Orbit Update

Observers  on 20 November '09

A total of 27 observing facilities appear in today's MPECs.

CodeObserver / observatory
B03Alter Satzberg Obs. in Austria, 1 in MPEC 2009-W47 -- 2009 WJ6
H21Astronomical Research Obs. Westfield (ARO Westfield) in Illinois, 3 in MPECs 2009-W49, 2009-W50 & 2009-W51 -- 2009 WW7, 2009 WV7, 2009 VZ25
J51Atlante Obs. in the Canary Islands, 1 in MPEC 2009-W47 -- 2005 RQ6
A74Bergen-Enkheim Obs. in Germany, 1 in MPEC 2009-W47 -- 2009 WJ6
160Castelmartini Obs. in Italy, 5 in MPEC 2009-W47 -- 2002 NW16, 36284, 22771, 12711, 9202
703Catalina Sky Survey (CSS) in Arizona, 11 in MPECs 2009-W47 & 2009-W50 -- 2009 WV7, 2009 WO6, 2009 UM3, 2009 ST19, 2007 BG29, 2002 UN3, 85628, 54401, 217807, 20790, 137805
G58Chabot Obs. in northern California, 3 in MPEC 2009-W47 -- 2009 VS44, 2009 VR44, 2007 BX48
850Cordell-Lorenz Obs. in Tennessee, 3 in MPECs 2009-W47, 2009-W48 & 2009-W54 -- 2009 WZ7, 1998 HJ3, 4015
113Drebach Obs. in Germany, 1 in MPEC 2009-W47 -- 2009 WX6
683Goodricke-Pigott Obs. in Arizona, 1 in MPEC 2009-W47 -- 138852
J95Great Shefford Obs. in England, 1 in MPEC 2009-W47 -- 2009 WJ6
379Hamamatsu-Yuto Obs. in Japan, 5 in MPEC 2009-W47 -- 2009 UV18, 2009 RN, 2005 RQ6, 2002 NW16, 4015
704LINEAR in New Mexico, 16 in MPECs 2009-W47, 2009-W48, 2009-W52, 2009-W53, 2009-W54 & 2009-W56 -- 2009 WZ7, 2009 WY7, 2009 WX7, 2009 WN8, 2009 WN, 2009 WB, 2009 UW18, 2009 TM10, 2009 QD34, 2005 QL, 1999 YC, 1998 HJ3, 35396, 216689, 138852, 3361
J75La Sagra Obs. in Spain, 3 in MPEC 2009-W47 -- 2009 KC3, 138852, 10150
H01Magdalena Ridge Obs. (MRO) in New Mexico, 8 in MPECs 2009-W48, 2009-W49, 2009-W50, 2009-W51, 2009-W52, 2009-W54, 2009-W55 & 2009-W57 -- 2009 WZ7, 2009 WX7, 2009 WW7, 2009 WV7, 2009 WO8, 2009 WM8, 2009 VZ25, 1998 HJ3
118Modra Obs. in Slovakia, 2 in MPECs 2009-W48 & 2009-W54 -- 2009 WZ7, 1998 HJ3
G96Mt. Lemmon Survey (MLS) in Arizona, 11 in MPECs 2009-W47, 2009-W51, 2009-W52, 2009-W53, 2009-W55, 2009-W56 & 2009-W57 -- 2009 WY7, 2009 WX7, 2009 WW7, 2009 WO8, 2009 WN8, 2009 WM8, 2009 WE, 2009 VA26, 2009 UW18, 154244, 152828
J47Nazaret Obs. in Spain, 1 in MPEC 2009-W47 -- 4015
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 5 in MPEC 2009-W47 -- 2009 VZ, 2009 NA, 2009 MX6, 2006 UR, 2005 RQ6
854Sabino Canyon Obs. in Arizona, 4 in MPECs 2009-W48, 2009-W50, 2009-W54 & 2009-W57 -- 2009 WZ7, 2009 WV7, 2009 WO8, 1998 HJ3
B74Santa Maria de Montmagastrell Obs. in Spain, 1 in MPEC 2009-W47 -- 2009 ST19
691Spacewatch 0.9m telescope in Arizona, 7 in MPECs 2009-W47 & 2009-W49 -- 2009 VZ25, 2009 QH2, 2009 KK8, 2003 UX34, 2002 XA40, 2002 AT15, 2001 HA8
291Spacewatch 1.8m telescope in Arizona, 17 in MPECs 2009-W47, 2009-W49, 2009-W50 & 2009-W51 -- 2009 WW7, 2009 WV7, 2009 WP6, 2009 WM1, 2009 WJ1, 2009 VZ25, 2009 VN1, 2009 VJ24, 2009 VA26, 2009 UN1, 2008 GE1, 2005 YY93, 2005 LV7, 2005 EZ29, 2004 XK4, 2003 XF11, 2001 DB3
6735Jim Young via Table Mtn. Obs. in southern California, 1 in MPEC 2009-W50 -- 2009 WV7
926Tenagra II Obs. in Arizona, 9 in MPECs 2009-W47, 2009-W48, 2009-W50, 2009-W51, 2009-W54 & 2009-W57 -- 2009 WZ7, 2009 WW7, 2009 WV7, 2009 WO8, 2009 WK1, 2009 WJ6, 2009 WF, 2009 WB, 1998 HJ3
H53Thompsonville Obs. in Illinois, 7 in MPEC 2009-W47 -- 2009 UK28, 2009 SM103, 2009 NH, 2009 NA, 2008 WB59, 2005 RQ6, 2002 NW16
H10Tzec Maun Obs. Mayhill in New Mexico, 1 in MPEC 2009-W48 -- 1998 HJ3
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 20 November '09

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS at 2321 and JPL at 2322 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 WY7JPL Sentry23222019-2108438.1e-08-6.48-7.300JPL: "Analysis based on 8 observations spanning 1.1107 days (2009-Nov-19.30256 to 2009-Nov-20.41322)." Diameter approximately 0.060 km. from mean, weighted H=23.8.
2009 WW7JPL Sentry17302042-2105261.8e-05-6.88-7.090JPL: "Analysis based on 25 observations spanning 1.1344 days (2009-Nov-19.23811 to 2009-Nov-20.37248)." Diameter approximately 0.006 km. from mean, weighted H=28.9.
2009 WD7JPL Sentry02482027-2106221.7e-08-8.09-8.490JPL: "Analysis based on 15 observations spanning .56236 days (2009-Nov-19.37112 to 2009-Nov-19.93348)." Diameter approximately 0.023 km. from mean, weighted H=25.9.
2009 WR6NEODyS15382043-208259.39e-10-5.73-6.060NEODyS: "Based on 24 optical observations (of which 0 are rejected as outliers) from 2009/11/18.507 to 2009/11/19.464."
2009 WP6JPL Sentry15382067-2108543.5e-05-5.09-5.440JPL: "Analysis based on 18 observations spanning 1.9327 days (2009-Nov-18.25267 to 2009-Nov-20.18535)." Diameter approximately 0.015 km. from mean, weighted H=26.8.
NEODyS15382067-2090302.9e-05-5.16-5.480NEODyS: "Based on 18 optical observations (of which 0 are rejected as outliers) from 2009/11/18.253 to 2009/11/20.186."
2009 WK6NEODyS15382014-206692.99e-10-5.66-5.860NEODyS: "Based on 26 optical observations (of which 0 are rejected as outliers) from 2009/11/17.429 to 2009/11/19.399."
2009 WJ6NEODyS15392049-205633.35e-05-5.39-5.400NEODyS: "Based on 50 optical observations (of which 0 are rejected as outliers) from 2009/11/19.267 to 2009/11/20.098."
JPL Sentry15382042-205633.2e-05-5.40-5.440JPL: "Analysis based on 50 observations spanning .83074 days (2009-Nov-19.26657 to 2009-Nov-20.09731)." Diameter approximately 0.011 km. from mean, weighted H=27.5.
2009 WM1JPL Sentry15382018-21071483.6e-05-1.84-2.240JPL: "Analysis based on 27 observations spanning 2.0177 days (2009-Nov-17.4641 to 2009-Nov-19.48183)." Diameter approximately 0.277 km. from mean, weighted H=20.4.
NEODyS15382018-2090732.29e-05-2.00-2.480NEODyS: "Based on 27 optical observations (of which 0 are rejected as outliers) from 2009/11/17.465 to 2009/11/19.483."
2009 WJ1JPL Sentry15382080-210341.7e-08-6.09-6.580JPL: "Analysis based on 28 observations spanning 2.9779 days (2009-Nov-17.10881 to 2009-Nov-20.08676)." Diameter approximately 0.203 km. from mean, weighted H=21.1.
NEODyS15382057-208043.13e-08-5.69-5.810NEODyS: "Based on 28 optical observations (of which 0 are rejected as outliers) from 2009/11/17.110 to 2009/11/20.088."
2009 VA26JPL Sentry1538206221.0e-09-6.82-6.940JPL: "Analysis based on 44 observations spanning 8.8195 days (2009-Nov-11.38063 to 2009-Nov-20.20013)." Diameter approximately 0.220 km. from mean, weighted H=21.0.
NEODyS1538R E M O V E D-
1998 HJ3JPL Sentry1538R E M O V E DJPL: Risk listing removed at 1515 UTC.

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 20 November '09

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

2322Noted that JPL Sentry has posted 2009 WY7 as an impact risk - see above
2000Grabbed MPEC 2009-W57 - 2009 WO8 - see above
1923Grabbed MPEC 2009-W55 - 2009 WM8 - see above
Grabbed MPEC 2009-W56 - 2009 WN8 - see above
1730Noted that JPL Sentry has posted 2009 WW7 as an impact risk - see above
1612Grabbed MPEC 2009-W54 - 2009 WZ7 - see above
1538Noted that JPL Sentry has removed 1998 HJ3 as an impact risk - see above
Noted that JPL Sentry has updated its 2009 VA26 risk assessment - see above
Noted that NEODyS has removed 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 updated its 2009 WJ1 risk assessment - see above
Noted that JPL Sentry has updated its 2009 WJ6 risk assessment - see above
Noted that NEODyS has posted 2009 WJ6 as an impact risk - see above
Noted that NEODyS has posted 2009 WK6 as an impact risk - see above
Noted that JPL Sentry has updated its 2009 WM1 risk assessment - see above
Noted that NEODyS has updated its 2009 WM1 risk assessment - see above
Noted that JPL Sentry has updated its 2009 WP6 risk assessment - see above
Noted that NEODyS has posted 2009 WP6 as an impact risk - see above
Noted that NEODyS has posted 2009 WR6 as an impact risk - see above
Grabbed MPEC 2009-W47 - Daily Orbit Update - see above
Grabbed MPEC 2009-W48 - 1998 HJ3 - see above
Grabbed MPEC 2009-W49 - 2009 VZ25 - see above
Grabbed MPEC 2009-W50 - 2009 WV7 - see above
Grabbed MPEC 2009-W51 - 2009 WW7 - see above
Grabbed MPEC 2009-W52 - 2009 WX7 - see above
Grabbed MPEC 2009-W53 - 2009 WY7 - see above
0248Noted that JPL Sentry has posted 2009 WD7 as an impact risk - see above