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

From: Derek C Breit (
Date: Tue Sep 06 2011 - 15:58:47 UTC

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    The Bright object was the ISS..
    I saw it in the same pass..
    When I saw it it was orange, except when it flared brightly, when it was
    blue White.. It did appear to move rather slowly..
    -----Original Message-----
    [] On Behalf
    Of Björn Gimle
    Sent: Tuesday, September 06, 2011 2:44 AM
    To: Derrick MacPherson
    Subject: Re: Just joined, noob warning. Objects observed, wondering what I
    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
    (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
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