Re: Satellite ID help requested...

From: Björn Gimle (b_gimle@algonet.se)
Date: Fri Nov 29 2002 - 01:07:01 EST

  • Next message: Matson, Robert: "RE: Fireball or reentry..."

    I measured the end points of the track as 20.757639,+30.717778 and
    20.763556,+30.762500 (decimal RA/dec for SkyMap deepsky.txt) and had FirstOrb
    make a few possible circular orbits on the assumption that it was a flash from a
    slowly rotating object.
    
    Positions in ElCor/First notation:
      1 02 11 07  4 42 03.0  20 45.45  30.718 2000 9.9
      1 02 11 07  4 42 06.0  20 45.81  30.763 2000 9.9
    
    I got these suggestions:
    02-811A track 10.2 seconds                      3.2
    1 90811U 02811  A 02311.11351505  .00000000  00000-0  00000-0 0    00
    2 90811  41.3667 273.1057 0000010   0.0000   0.0000  2.00614778    00
    02-811A track 3.0 seconds                       5.2
    1 90811U 02811  A 02311.16111987  .00000000  00000-0  00000-0 0    00
    2 90811  38.8871 272.5577 0000010   0.0000   0.0000  5.95141660    00
    
    There are many eccentric orbits that could also fit.
    The Westford Needles suggested are almost at right angles to track.
    Az = 294, alt = 21 degrees. The brightest star in the 4 o'clock position from 52
    Cyg is the 8.6 mag HP102468/HD335027 at 20:45:49.32 +30 39' 43".5. (Rotate image
    about 156 degrees clockwise to get alt/az view)
    Perhaps a slow glint from a Molniya-type satellite at apogee ?
    
    ----- Original Message -----
    ...
    >
    > http://home.att.net/~astropix/Dan_s_Satellite.html
    >
    > The particulars are:
    >
    > > The bright star in the center, showing some 'blooming'
    > > artifacts is 52 Cyg... the trail is just to the left
    > > and inclined about 15 degrees to the framing of the
    > > shot.  The image was taken in Chiefland FL, on 11/7/02
    > > at 4:42:03 UT. Lat/Lon for Chiefland is: 29.4750° N,
    > > 82.8600° W...  Celestial coordinates for 52 Cyg are:
    > > (epoch 2K) 20 45 39.75/+30 43 11.0...
    >
    
    
    
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