Rosetta sliding through Leo

From: Richard.Keen@colorado.edu
Date: Fri Mar 04 2005 - 04:52:04 EST

  • Next message: Ted Molczan: "TJM obs of 2005 Mar 04 UTC"

    Hi -
    I just observed my first interplanetary spacecraft, Rosetta, from 0840 to 0925
    UT March 4.
    It was magnitude 11.4 in the 12.5-inch reflector, about 1 magnitude brighter
    than the predictions posted on the ESA web site.  Its motion was easy to
    perceive, especially when the spacecraft made a rapidly changing equilateral
    triangle with two similarly bright stars.
    Here's the specs from NASA's JPL Horizons site:
    
    HORIZONS Generated Ephemeris
    Target Body: Rosetta (Spacecraft)
    Observer Location: 10524'00.0''W, 3924'00.0''N, 2730 m
    
    Date__(UT)__HR:MN  R.A.__(a-apparent)__DEC Azi_(a-appr)_Elev        delta    S-
    O-T /r
    2005-Mar-04 09:00  10 49 39.87 +04 03 35.9 224.5871  45.7606  0.0015076613
    176.4458 /T
    
    cheers, Rich Keen
    
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