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

From: Brad Young (
Date: Tue Jun 17 2008 - 19:15:39 UTC

  • Next message: Alberto Rango: "4641 SATOBS 15 - 16 JUN 2008."

    Gerhard HOLTKAMP wrote:
    >CZ-4C R/B (2008-026B)... 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
    >there was a chaotic sequence of flares, flashes and fadings of different 
    >durations and magnitudes... The respective FENGYUN 
    >3A payload (2008-026A) showed up 20 minutes later but that pass was at a
    >and rather uneventful mag 5
    > USA 186... 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)... 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, this matches what I've seen lately, except for 08-26B, which I
    recorded as a fairly steady variation:
    08- 26 B 08-05-29 03:00:49   BY  116.7 0.4  18  6.48  A 6->7
    So perhaps it has gone "haywire" and will be a better show. 8-26A is steady
    and dim. USA 186 fairly consistently gives that "pre-flare" flash you
    described, rarely twice and then flares 2-3 seconds quite brightly.
    2005-016A has been very bright lately, almost matching Arcturus a few nights
    ago. As I get timings on it, it is almost too bright to see stars it passes,
    and then, I turn to write down a number and its gone to the eye, 5 mag or
    less, just as you said. Weird behavior!
    Brad Young
    TULSA 1
    COSPAR 8336
    36.1397N, 95.9838W, 205m ASL
    Subscribe/Unsubscribe info, Frequently Asked Questions, SeeSat-L archive:

    This archive was generated by hypermail 2b29 : Tue Jun 17 2008 - 19:16:45 UTC