Possible locations of 2007 WD5 relative to Mars 
on 30 Jan. 2008. Illustration courtesy of JPL.

Small asteroid 2007 WD5 will pass through the orbit of Mars on January 30th and JPL announced yesterday a 1-in-75 chance that Mars may be in the same spot, taking a three-megaton hit. This illustration, courtesy of JPL, shows points relative to Mars that 2007 WD5 might occupy based on variant orbit solutions from observations spanning only 29 days. See news releases from NASA/JPL, JPL's NEO Program Office, the University of Arizona, and New Mexico Tech.

Contents  on 22 December '07


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 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 22 December '07

The MPC's NEO Confirmation Page has 2 listings: 1 new, 1 updated

When last checked at 2354 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had one new and one updated listing. Both of these 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 22 December '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 22 Dec. '07 >>  MPEC 2007-Y41 - "07:06 UT" - Daily Orbit Update

Observers  on 22 December '07

Three observing facilities appear in today's MPEC.

CodeObserver / observatory
834AAAA Buenos Aires Obs. in Argentina, 1 in MPEC 2007-Y41 -- 2007 XH16
B28Mandi Obs. in Italy, 2 in MPEC 2007-Y41 -- 2007 YZ, 2007 YH
198Wildberg Obs. in Germany, 4 in MPEC 2007-Y41 -- 2007 YX1, 2007 YH, 2007 OG3, 1998 XC9

Impact Risk Monitoring  on 22 December '07

At last check (NEODyS and JPL at 2354 UTC) there was no risk monitoring news to report yet today. See the CRT for activity in the last month.

Chronology  on 22 December '07

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

1424Grabbed MPEC 2007-Y41 - Daily Orbit Update - see above