RE: Satelite Ident.

From: Ted Molczan (molczan@rogers.com)
Date: Sun Jul 11 2004 - 10:30:57 EDT

  • Next message: Edward S Light: "Re: Magnitude observations"

    Kevin Grey wrote:
    
    > I was almost certain that it passed closer to Alkaid as well. 
    > Is it possible for the TLE to have a certain degree of 
    > inaccuracy?
    
    Yes, but when current 2-line elements are available, as in this and most other
    cases, the error typically is of the order of 0.1 s in time and 0.05 deg of arc.
    ADEOS 2 missed Alkaid by about 10 deg.
    
    However, it did pass 1.6 above a mag 2.8 star in Canes Venatici, at RA 12:56,
    Dec +38:19, roughly crossing the imaginary line between that star and Alkaid.
    So, I suspect that you may have mistakenly remembered that star as Alkaid.
    
    
    > If I had a pen and paper on me, I would have 
    > been able to log the information better (doh!)
    
    An excellent suggestion, that all observers should follow. When interesting
    unknowns appear, sketch their path relative one or more known stars, and note
    the time as accurately as possible. Also make note of visual magnitude, colour
    and flash pattern, if any. The more detailed the observation, the easier the
    identification.
    
    Ted Molczan
    
    
    
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