Saturday20 March 20047:04pm MST2004-03-21 UTC 0204 back top next  

The Asteroid/Comet Connection's
daily news journal about
asteroids, comets, and meteors

Today's issue status: done

Cover: The recovery of the only known inside-Earth-orbit object (IEO), 2003 CP20 [link|alt]. Erich Meyer caught it on the nights of the 14th and 17th at Linz Observatory in Austria, as announced in MPEC 2004-F23 Wednesday. 2003 CP20 was last reported seen on 2 May 2003. He says it "was only 8 degrees over the horizon(!)," but the seeing was good. The image here is from eight 20-second frames from an 0.6m f/3.3 reflector with ST-6 camera, stacked in Astrometrica without flatfielding, and shown at 200%.

News briefs – panel 1/1 Major News for 20 March 2004 back top next  
News briefs

Deep Impact:  The Deep Impact comet mission has posted its March newsletter. Included is an interview with senior science team member, Jessica Sunshine, and a picture of the CD with 625,000 names being put aboard the comet impactor.

Risk monitoring - panel 1/1 Major News for 20 March 2004 back top next  
Risk monitoring 20 March

Today NEODyS posted 2004 FZ1, which has observations reported in the Saturday Daily Orbit Update MPEC (DOU) from yesterday morning from LINEAR in New Mexico. This object was announced yesterday in MPEC 2004-F34 as discovered early Thursday by LINEAR, and confirmed Friday morning by Tenagra II, Powell, and Table Mountain observatories in Arizona, Kansas, and southern California. 2004 FZ1 has an eccentric (e=0.5588) and very inclined (i=52.4°) preliminary orbit calculation and, from its brightness, is estimated to be roughly 740 meters/yards wide.

The DOU has observation of 2004 FH from Thursday from Kuma Kogen Observatory in Japan, and today NEODyS removed its one impact solution for this little Earth-buzzer. (At 6pm on a Saturday evening in Pasadena, JPL hadn't yet updated its 2004 FH risk assessment with today's new data.)

The Arecibo schedule is currently showing there will be an attempt to observe 2004 FH by radar tomorrow.

Summary Risk Table - sources checked at 0203 UTC, 21 Mar




 2004 FZ1 NEODyS 3/202051-20562-4.73-4.7901.035
 2004 FHNEODyS 3/20R E M O V E D
JPL 3/202073-21024-6.38-6.7602.771
VI = count of "virtual impactors" (impact solutions)
See A/CC's Consolidated Risk Tables for more and maybe
  newer details, and check the monitors' links for latest info.
Note that only objects recently in view are shown here.   [ top ]
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