Re: Just joined, noob warning. Objects observed, wondering what I saw

From: Björn Gimle (
Date: Tue Sep 06 2011 - 09:43:56 UTC

  • Next message: Björn Gimle: "{Filename?} Re: help on an unid? (a bit long)"

    Yes, location in the sky is usually more accurate if you can relate to
    "known" stars, or attach an annotated sky map
    (NB seesat-L hides attachments, as well as HTML code, but members can
    retrieve them anyway)
    For accurate observations, we usually estimate the fraction were the
    satellite crosses a line of two (close) stars.
    Likewise, direction of motion is more reliable if you imagine the face
    of a watch where the satellite position is given - so a satellite
    moving horizontally is "9 o'clock" or 270 degrees.
    And it is helpful if you include your coordinates in degrees , to (at
    least) two decimals. I guessed 49.317N,123.067W
    Above all, time (in UT helps the world community) to the nearest
    minute. In a span of an hour, we may have hundreds of potential
    satellites to ignore. But it seems the sky would have been too bright
    for a "normal" satellite before 8:30 or even 9PM !
    You can try to identify satellites yourself, or get a sky map to
    complement your ID request, at Heavens-Above:
    Example : In the map,287&loc=North+Vancouver&Date=40784.19
    (let me know if you don't find out how to get to these maps for other
    you could write 'passed R.A. 22:45 Dec. +23 (or describe the stars) in
    direction 7:30 on a clock (or 220 degrees)
    2011/9/6 Derrick MacPherson <>:
    >...This all happened in about ten
    > seconds, I called to our other friend to take a look and the first object
    > was no longer visible.. I could guess the original object location in the
    > sky, I'm sure that info would be helpful, I am just not sure what way you
    > guys would normally measure that info, so I'll try to explain
    Björn Gimle, COSPAR 5919
    59.2576 N, 18.6172 E, 23 m
    Phone: +46 (0)8 571 43 312
    Mobile: +46 (0) 704 385 486
    Seesat-l mailing list

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