Contents on 24 November '07
- IAU Minor Planet Center
- Impact Risk Monitoring -- three objects reported
- Consolidated Risk Tables - the CRT page
- Earth's Busy Neighborhood Traffic Report
- Ephemerides for risk-rated and nearby objects
- Old & new CRT Archive
- Old News Archive & Small Objects Archive
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 24 November '07
The MPC's NEO Confirmation Page has 9 listings: 7 new, 2 updated
When last checked at 2354 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had seven new and two updated listings. All of these were "one nighters." So far The Tracking News has counted a total of ten objects listed on the NEOCP at some point today.
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 24 November '07
Minor Planet Electronic Circulars
As of last check at 2357 UTC, there has been one MPEC issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.
- Observations of risk-listed objects
- K07W04V 2007 WV4 (i=37.9°, arc=5 days, H=19.4 ~446m) from Great Shefford Obs. (Nov. 24.05-06p2)
- K07VJ1E 2007 VE191 (small asteroid, arc=9 days, H=23.8 ~59m) from Great Shefford Obs. (Nov. 23.86p3 & 23.94p1)
- K07V03J 2007 VJ3 (small asteroid, arc=7 days, H=24.9 ~35m) from the Catalina Sky Survey (CSS) (Nov. 2.46-48p4)
- Observations of recently (no longer) risk-listed objects
- K07VI4D 2007 VD184 (small asteroid, arc=12 days, H=23.3 ~74m) from Desert Moon Obs. (Nov. 23.14-17p3)
- K07V12D 2007 VD12 (arc=19 days, H=20.0 ~339m) from Hamamatsu-Yuto Obs. (Nov. 23.59-63p21) and North Obs. (Nov. 23.91-92p8)
- K07U51R 2007 UR51 (arc=18 days, H=21.5 ~170m) from Astronomical Research Obs. (ARO) (Nov. 4.08p1)
- Observations of other objects
- K07VI8A 2007 VA188 (Q=5.820 AU, arc=11 days, H=19.4 ~446m) from Desert Moon Obs. (Nov. 23.21-22p2)
- K07V30Z 2007 VZ30 (arc=3 opp, H=21.1 ~204m) from the Spacewatch 0.9m telescope (2000 Feb. 27.24-28p3)
- K07V04Q 2007 VQ4 (Q=4.004 AU, arc=17 days, H=16.0 ~2.14 km, q=1.272 AU) from CSS (Nov. 5.40-45p4)
- K07T08G 2007 TG8 (Q=4.306 AU, arc=71 days, H=18.7 ~616m) from Desert Moon Obs. (Nov. 23.10-11p3)
- K07S11E 2007 SE11 (i=48.3°, arc=64 days, H=17.8 ~933m) from Great Shefford Obs. (Nov. 23.79-80p3)
- K07P08A 2007 PA8 (Q=4.701 AU, arc=2 opp, H=16.0 ~2.14 km, q=0.958 AU) from Desert Moon Obs. (Nov. 23.05-06p2)
Observers on 24 November '07
Seven observing facilities appear in today's MPEC.
|Code||Observer / observatory|
|H55||Astronomical Research Obs. in Illinois, 1 in MPEC 2007-W64 -- 2007 UR51|
|703||Catalina Sky Survey (CSS) in Arizona, 2 in MPEC 2007-W64 -- 2007 VQ4, 2007 VJ3|
|448||Desert Moon Obs. in New Mexico, 4 in MPEC 2007-W64 -- 2007 VD184, 2007 VA188, 2007 TG8, 2007 PA8|
|J95||Great Shefford Obs. in England, 3 in MPEC 2007-W64 -- 2007 WV4, 2007 VE191, 2007 SE11|
|379||Hamamatsu-Yuto Obs. in Japan, 1 in MPEC 2007-W64 -- 2007 VD12|
|J69||North Obs. in England, 1 in MPEC 2007-W64 -- 2007 VD12|
|691||Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2007-W64 -- 2007 VZ30|
Impact Risk Monitoring on 24 November '07
Notes for Today's Latest Risk Assessments
|2007 WV4||NEODyS||1452||2023-2089||64||2.25e-07||-3.37||-3.97||0||NEODyS: "Based on 14 optical observations (of which 0 are rejected as outliers) from 2007/11/19.394 to 2007/11/24.059."|
|JPL Sentry||1450||2023-2107||49||1.8e-07||-3.50||-4.09||0||JPL: "Analysis based on 14 observations spanning 4.6648 days (2007-Nov-19.39373 to 2007-Nov-24.05852)." Diameter approximately 0.476 km. from mean, weighted H=19.3.|
|2007 VE191||NEODyS||1452||2015||1||1.08e-05||-3.45||-3.45||0||NEODyS: "Based on 45 optical observations (of which 0 are rejected as outliers) from 2007/11/15.267 to 2007/11/23.944."|
|JPL Sentry||1450||2015||1||9.6e-06||-3.51||-3.51||0||JPL: "Analysis based on 45 observations spanning 8.6773 days (2007-Nov-15.26603 to 2007-Nov-23.94335)." Diameter approximately 0.058 km. from mean, weighted H=23.8.|
|2007 VJ3||JPL Sentry||1450||R E M O V E D||JPL: Risk listing removed at 1202 UTC.|
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 24 November '07
Times are UTC for when the items were noted or added by The Tracking News.
|1452||Noted that NEODyS has updated its 2007 VE191 risk assessment - see above|
Noted that NEODyS has updated its 2007 WV4 risk assessment - see above
|1451||Grabbed MPEC 2007-W64 - Daily Orbit Update - see above|
|1450||Noted that JPL Sentry has updated its 2007 VE191 risk assessment - see above|
Noted that JPL Sentry has removed 2007 VJ3 as an impact risk - see above
Noted that JPL Sentry has updated its 2007 WV4 risk assessment - see above