Contents on 8 January '08
- IAU Minor Planet Center
- Impact Risk Monitoring -- one object
- 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 8 January '08
The MPC's NEO Confirmation Page has 1 listing: 1 updated
When last checked at 2357 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had one updated listing. This was a "one nighter."
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 8 January '08
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
- K07Y56Q 2007 YQ56 (arc=8 days, H=19.7 ~389m) from Great Shefford Obs. (Jan. 7.88-89p3)
- Observations of recently (no longer) risk-listed objects
- K07Y02B 2007 YB2 (Q=5.257 AU, arc=20 days, H=18.2 ~776m) from McDonald Obs. (Jan. 7.51-52p3)
- Observations of small asteroids (H>22.0)
- K07W05D 2007 WD5 (Q=4.076 AU, arc=60 days, H=24.3 ~47m) from Calar Alto Obs. (Jan. 6.91-95p2 at R=23.9)
- Observations of other objects
- K07T15G 2007 TG15 (arc=92 days, H=19.5 ~426m) from Inastars Obs. (Jan. 7.85-86p4)
- K05W56J 2005 WJ56 (arc=3 opp, H=18.0 ~851m) from McDonald Obs. (Jan. 7.19p3)
- K03B84H 2003 BH84 (arc=2 opp, H=16.9 ~1.41 km) from Inastars Obs. (Jan. 7.82-83p4)
- H0903 170903 2004 WS2 from Kinver Obs. (Jan. 7.84-85p4)
- D6793 136793 1997 AQ18 from Inastars Obs. (Jan. 7.80p3)
- 96189 96189 1991 NT3 from Purple Mtn. Obs. XuYi Station (Jan. 7.65-70p4)
Observers on 8 January '08
Six observing facilities appear in today's MPEC.
|Code||Observer / observatory|
|493||Calar Alto Obs. in Spain, 1 in MPEC 2008-A35 -- 2007 WD5|
|J95||Great Shefford Obs. in England, 1 in MPEC 2008-A35 -- 2007 YQ56|
|B15||Inastars Obs. in Germany, 3 in MPEC 2008-A35 -- 2007 TG15, 2003 BH84, 136793|
|J66||Kinver Obs. in England, 1 in MPEC 2008-A35 -- 170903|
|711||McDonald Obs. in Texas, 2 in MPEC 2008-A35 -- 2007 YB2, 2005 WJ56|
|D29||Purple Mtn. Obs. XuYi Station in China, 1 in MPEC 2008-A35 -- 96189|
Impact Risk Monitoring on 8 January '08
Notes for Today's Latest Risk Assessments
|2007 YQ56||JPL Sentry||1527||2027-2106||19||1.9e-07||-4.10||-4.35||0||JPL: "Analysis based on 51 observations spanning 7.7433 days (2007-Dec-31.14551 to 2008-Jan-07.88879)." Diameter approximately 0.352 km. from mean, weighted H=19.9.|
|NEODyS||1527||2052-2089||25||1.18e-07||-4.49||-4.93||0||NEODyS: "Based on 51 optical observations (of which 0 are rejected as outliers) from 2007/12/31.146 to 2008/01/07.890."|
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 8 January '08
Times are UTC for when items were noted or added by The Tracking News.
|1641||The NEOCP has become active|
|1527||Noted that JPL Sentry has updated its 2007 YQ56 risk assessment - see above|
Noted that NEODyS has updated its 2007 YQ56 risk assessment - see above
Grabbed MPEC 2008-A35 - Daily Orbit Update - see above
|0413||The NEOCP has become empty|