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

From: Derrick MacPherson (
Date: Tue Sep 06 2011 - 15:33:12 UTC

  • Next message: Derek C Breit: "RE: Just joined, noob warning. Objects observed, wondering what I saw"

    awesome information guys, thanks very much. I'll be back at his house
    in the next few days I'm sure and I can do a much better job at
    locating the area where I was looking... My coordinates would have
    49.330996 -123.084313
    I'll confirm with the other guy who saw it what time it was.. I'll
    have to take a look out tonight and see if I can judge even a better
    time based on the darkness - my recollection was that it was early but
    there's no way it was a light sky at all.  As well I'll use google
    skymap to give some indication of what stars are around the area, but
    being in the city there's so much light pollution I may be off
    ps - I may have fired this message initially an individual and not the
    list - this is the first list in a long time that defaults to reply to
    sender and not reply to list - I'll have to keep that in mind.
    2011/9/6 Björn Gimle <>:
    > Welcome!
    > 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
    > times/objects)
    > 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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