Contents  on 20 November '07

Resources:

The latest news: framed access (best), RSS news feed 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 20 November '07

The MPC's NEO Confirmation Page has 28 listings: 4 new, 24 updated

When last checked at 2354 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had four new and 24 updated listings. Of these, 20 were "one nighters."

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 20 November '07

Minor Planet Electronic Circulars

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


<< DOU on 20 Nov. '07 >>  MPEC 2007-W42 - "07:10 UT" - Daily Orbit Update

Observers  on 20 November '07

A total of 21 observing facilities appear in today's MPEC.

CodeObserver / observatory
H55Astronomical Research Obs. in Illinois, 1 in MPEC 2007-W42 -- 2007 VX6
703Catalina Sky Survey (CSS) in Arizona, 3 in MPEC 2007-W42 -- 2007 US6, 2007 TG15, 162215
8071Marc W. Buie via Cerro Tololo Inter-American Obs. in Chile, 1 in MPEC 2007-W42 -- 2007 US6
448Desert Moon Obs. in New Mexico, 8 in MPEC 2007-W42 -- 2007 VZ30, 2007 VX7, 2007 VD3, 2003 YQ94, 2000 ER70, 66272, 154589, 138947
595Farra d'Isonzo Obs. in Italy, 1 in MPEC 2007-W42 -- 2005 GL
379Hamamatsu-Yuto Obs. in Japan, 2 in MPEC 2007-W42 -- 2007 VD12, 2007 SE11
J37Huelva Obs., 1 in MPEC 2007-W42 -- 1036
701Junk Bond Obs. in Arizona, 3 in MPEC 2007-W42 -- 2007 WY3, 2007 WQ3, 2005 GL
699LONEOS in Arizona, 4 in MPEC 2007-W42 -- 2007 WP3, 2007 PU11, 22771, 3200
J40Malaga Obs. in Spain, 2 in MPEC 2007-W42 -- 2007 SE11, 153591
474Mt. John Obs. in New Zealand, 3 in MPEC 2007-W42 -- 2007 WK3, 2007 WJ3, 2007 VX6
G96Mt. Lemmon Survey (MLS) in Arizona, 2 in MPEC 2007-W42 -- 143409, 141079
566NEAT's GEODSS Haleakala telescope in Hawaii, 1 in MPEC 2007-W42 -- 2007 US6
A24New Millennium Obs. in Italy, 2 in MPEC 2007-W42 -- 86324, 137084
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 6 in MPEC 2007-W42 -- 2007 VM184, 2007 VD12, 2007 PU11, 2007 GS3, 1993 TQ2, 153591
233San Vito Obs. in Italy, 1 in MPEC 2007-W42 -- 4954
D21Shenton Park Obs. in Western Australia, 1 in MPEC 2007-W42 -- 2007 WA
E12Siding Spring Survey (SSS) in New South Wales, 3 in MPEC 2007-W42 -- 2007 VH184, 2007 VG184, 1865
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2007-W42 -- 2007 WJ3
291Spacewatch 1.8m telescope in Arizona, 8 in MPEC 2007-W42 -- 2007 VP243, 2007 VN243, 2007 VK184, 2007 VH189, 2007 VG189, 2007 VE191, 2007 VC191, 2005 YQ96
689!program code "!" via U.S. Naval Obs. Flagstaff Station (USNO Flagstaff) in Arizona, 21 in MPEC 2007-W42 -- 2007 WV3, 2007 WQ3, 2007 WM3, 2007 WB, 2007 VZ30, 2007 VW137, 2007 VO243, 2007 VK184, 2007 VG189, 2007 VE191, 2007 VB3, 2007 UY1, 2007 UQ13, 2007 TZ18, 2007 TR65, 2007 SV2, 2007 SJ, 2007 LQ19, 2005 LW39, 2005 GL, 2003 YQ94

Impact Risk Monitoring  on 20 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 WV3NEODyS20352011-2086369.78e-09-4.71-5.040NEODyS: "Based on 16 optical observations (of which 0 are rejected as outliers) from 2007/11/18.465 to 2007/11/19.522."
JPL Sentry14572011-2105432.6e-08-4.34-4.610JPL: "Analysis based on 16 observations spanning 1.0575 days (2007-Nov-18.46411 to 2007-Nov-19.52162)." Diameter approximately 0.450 km. from mean, weighted H=19.4.
2007 WP3JPL Sentry14572098-2107217.7e-06-4.64-5.080JPL: "Analysis based on 38 observations spanning 1.1707 days (2007-Nov-18.26457 to 2007-Nov-19.43525)." Diameter approximately 0.068 km. from mean, weighted H=23.5.
2007 VP243JPL Sentry1829R E M O V E DJPL: Risk listing removed at 1805 UTC.
NEODyS1600R E M O V E D
2007 VN243NEODyS16012034-2086232.27e-06-4.38-5.010NEODyS: "Based on 19 optical observations (of which 0 are rejected as outliers) from 2007/11/15.245 to 2007/11/19.227."
JPL Sentry14572034-2086172.1e-06-4.42-5.000JPL: "Analysis based on 19 observations spanning 3.9820 days (2007-Nov-15.24381 to 2007-Nov-19.22583)." Diameter approximately 0.120 km. from mean, weighted H=22.3.
2007 VE191NEODyS15352015-202022.8e-05-3.05-3.050NEODyS: "Based on 34 optical observations (of which 0 are rejected as outliers) from 2007/11/15.267 to 2007/11/19.405."
JPL Sentry15312015-203222.8e-05-3.05-3.050JPL: "Analysis based on 34 observations spanning 4.1378 days (2007-Nov-15.26603 to 2007-Nov-19.40385)." Diameter approximately 0.057 km. from mean, weighted H=23.8.
2007 VC191JPL Sentry2035R E M O V E DJPL: Risk listing removed at 1910 UTC.
NEODyS1535R E M O V E D
2007 VH189NEODyS15362013-2088352.71e-06-4.20-4.670NEODyS: "Based on 20 optical observations (of which 0 are rejected as outliers) from 2007/11/14.352 to 2007/11/19.260."
JPL Sentry14572013-2100322.6e-06-4.24-4.700JPL: "Analysis based on 20 observations spanning 4.9082 days (2007-Nov-14.35096 to 2007-Nov-19.25916)." Diameter approximately 0.070 km. from mean, weighted H=23.4.
2007 VG189JPL Sentry2300R E M O V E DJPL: Risk listing removed at 2229 UTC.
NEODyS1535R E M O V E D
2007 VK184JPL Sentry16282035-2062216.1e-05-2.64-3.020JPL: "Analysis based on 61 observations spanning 7.1116 days (2007-Nov-12.13904 to 2007-Nov-19.25067)." Diameter approximately 0.130 km. from mean, weighted H=22.0.
NEODyS16012036-2069246.0e-05-2.64-3.020NEODyS: "Based on 61 optical observations (of which 0 are rejected as outliers) from 2007/11/12.140 to 2007/11/19.251."

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 '07

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

2300Noted that JPL Sentry has removed 2007 VG189 as an impact risk - see above
2035Noted that JPL Sentry has removed 2007 VC191 as an impact risk - see above
Noted that NEODyS has posted 2007 WV3 as an impact risk - see above
1829Noted that JPL Sentry has removed 2007 VP243 as an impact risk - see above
1628Noted that JPL Sentry has updated its 2007 VK184 risk assessment - see above
1601Noted that NEODyS has updated its 2007 VK184 risk assessment - see above
Noted that NEODyS has updated its 2007 VN243 risk assessment - see above
1600Noted that NEODyS has removed 2007 VP243 as an impact risk - see above
1536Noted that NEODyS has updated its 2007 VH189 risk assessment - see above
1535Noted that NEODyS has removed 2007 VC191 as an impact risk - see above
Noted that NEODyS has updated its 2007 VE191 risk assessment - see above
Noted that NEODyS has removed 2007 VG189 as an impact risk - see above
1531Noted that JPL Sentry has updated its 2007 VE191 risk assessment - see above
1458Grabbed MPEC 2007-W42 - Daily Orbit Update - see above
1457Noted that JPL Sentry has updated its 2007 VH189 risk assessment - see above
Noted that JPL Sentry has updated its 2007 VN243 risk assessment - see above
Noted that JPL Sentry has updated its 2007 WP3 risk assessment - see above
Noted that JPL Sentry has updated its 2007 WV3 risk assessment - see above