Flares from USA 186 and CZ-4C R/B

From: Gerhard HOLTKAMP (grd.holtkamp@t-online.de)
Date: Tue Jun 17 2008 - 17:35:32 UTC

  • Next message: Brad Young: "RE: Flares from USA 186 and CZ-4C R/B"

    The sky cleared up for a night so I took my 10x50 binoculars and did a few 
    obs. I started with CZ-4C R/B (2008-026B) which I picked up next to Eps UMa 
    at 21:04:19 UTC, 16-JUN-08. It first remained at an almost constant magnitude 
    (about mag 3 or 3.5) but after about half a minute it varied its brightness 
    slowly at first but then ever faster and stronger until after about a minute 
    there was a chaotic sequence of flares, flashes and fadings of different 
    durations and magnitudes which went on until I lost sight of it after another 
    minute or so (didn't do any timings on that - sorry). The respective FENGYUN 
    3A payload (2008-026A) showed up 20 minutes later but that pass was at a weak 
    and rather uneventful mag 5 (I have observed it a few times since its launch 
    and it always came up this weak).
    I picked up USA 186 on time next to Beta Leo at 21:30:13 UTC, 16-JUN-08, and 
    just five seconds later there was a quick bright flare (more of a flash 
    actually). Another bright flare (lasting two or three seconds) occurred at 
    21:31:12 UTC. The flares were negative mag, otherwise the brightness was 
    almost constant at something like mag 3.
    Lacrosse 5 (2005-016A) showed up too at that time and when I first looked at 
    it at 21:35:15 UTC, 16-JUN-08 it was at about mag 2.5. I was distracted for a 
    moment and when I looked again half a minute later it showed a weak reddish 
    mag 5. So Lacrosse 5 must have done its disappearance trick again at around 
    21:35:30 UTC.
    Gerhard HOLTKAMP
    Darmstadt, Germany
    49.8822N, 8.6558E
    Subscribe/Unsubscribe info, Frequently Asked Questions, SeeSat-L archive:  

    This archive was generated by hypermail 2b29 : Tue Jun 17 2008 - 17:52:24 UTC