Optical -23 Aug 2009-part 1

From: Greg Roberts (grr@telkomsa.net)
Date: Mon Aug 24 2009 - 07:35:44 UTC

  • Next message: Marco Langbroek: "Re: Optical -23 Aug 2009-part 1"

    Observations 23 August 2009
    -----------------------------------
    
    Cosatrak 1 (Computerised satellite Tracking System).
    Camera mount now carries two systems that can be operated
    together as two totally different sytems and computers used.
    
    Meade DSI Pro II Monochrome CCD camera without filters.
    using integration times of 5 sec min to 25 seconds maximum
    depending on brightness of sky in particular area.No image
    processing done, but some done automatically in the auto reduction
    software.
    
    Used with 4 inch SKYWATCHER refractor- model 1025 - fitted with home
    made focal reducer to give an f/2.56 system. Image scale is 6.56 arc
    sec/pixel and field of view 84.8 x 63.2 arc minutes. Shows 15th
    magnitude stars in real time with reasonably good conditions.
    
    Exposure time to nearest second inserted into image FITS header
    from PC clock which is automatically checked every minute against
    GPS signal.
    
    Site 0433 : Longitude 18.51294 deg East, Latitude -33.94058 deg,
    Elevation 10 metres-situated in Pinelands (Cape Town),South Africa
    
    
    UNKNOWN:
    ----------------
    
    00001           0433 E 20090823202127500 16 15 2106242-110221 28  +082 01
    00001           0433 E 20090823202210500 16 15 2108525-112143 18  +081 01
    00001           0433 E 20090823202249500 16 15 2111056-113853 18  +090 01
    00001           0433 E 20090823202355500 16 15 2114467-120657 28  +089 01
    00001           0433 E 20090823202431500 16 15 2116428-122126 28  +085 01
    00001           0433 E 20090823202514500 16 15 2119007-123826 18  +087 01
    00001           0433 E 20090823202620500 16 15 2122237-130301 18  +084 01
    00001           0433 E 20090823202701500 16 15 2124302-131807 28  +091 01
    00001           0433 E 20090823202738500 16 15 2126203-133105 38  +121 02
    
    Notes:
    --------
    
    (1) Bright unknown observed for which I , and APEX, can find no match.
        Slight variability- went into earths shadow at last position.
        Measured with APEX.
    
    (2) APEX gives the following circular orbit:
         semi major axis= 21388.90 kms
         inclination    =  31.467 degrees
         Arg of Perigee = 099.94 degrees
         Mean Anomaly   = 219.19 degrees
    
        I suspect its probably an Ariane rocket in a ~27 degree inclination
        GTO elliptical orbit.
    
        Since its so bright I think its worth while making a special effort
        to add it to ur catalog if indeed it is an unknown.
    
        Maybe one of our long missing 27 degree objects ?
    
    (3) LOTS more to follow....when APEX finishes them and Ive sorted
         everything out :-(((
    
    Cheers
    Greg 
    
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