RE: Unid sats

From: Matson, Robert (
Date: Thu Dec 21 2000 - 15:15:03 PST

  • Next message: Bjoern Gimle: "Re: Standard magnitude"

    Hi Mark,
    Didn't see anyone reply to your message on the list,
    so in case you were still trying to ID some of your
    unknowns from December 15th, I can tell you what four
    of them were.
    > 1. 17:13 GMT: heading East, right overhead.
    ERBS, #15354 (84-108B)
    > 2. 17:44 GMT: heading North, approximately 45 degrees altitude.
    This was Iridium 13 (#24840) assuming the satellite was in
    the northeast when you observed it.  (Note that giving the
    azimuth and elevation of the sighting is more important
    than the direction, though the direction certainly helps.
    Many satellites were headed northbound at 17:44 at a variety
    of azimuths, but Iridium 13 looks most likely.
    > 3. Cosmos 1315 headed South between 17:49 and 17:57 (max
    > altitude: 67 degrees ENE). At approx 17:54, it passed right next
    > to another satellite heading North. I thought this might be
    > Okean 1-7, but then I saw another sat which fitted the latter's
    > predicted pass...
    I can't find a good match other than Okean 1-7 at that time.
    Was this a dim satellite, or a particularly fast moving one?
    > 4. 18:16 GMT: heading NNE, approximately 45 degrees altitude.
    Cosmos 1992 R/B (#19770, 89-005B)
    > 5. 18:31 GMT: 3 flashes (one definately negative mag)
    > from within Cepheus: approx 22h30min, 65 degrees,
    > near Aldermin and Alphirk.
    This was Iridium 911 (formerly Iridium 11, #24842).
    This is a known tumbler that can produce nice bright
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