Re: NOAA 7 (was: Unid flashing sat)

From: Leo Barhorst (leobarhorst@zonnet.nl)
Date: Wed Apr 25 2001 - 12:05:44 PDT

  • Next message: Leo Barhorst: "Re: Mark Harris UNID"

    My obs of NOAA 7, 1981- 59 A, in 2001:
    81- 59 A 01-01-24 17:33:20   LB   57.0 0.5   9  6.3   AA, 6->i
    81- 59 A 01-01-25 18:58      LB                       almost S, 5
    81- 59 A 01-02-13 19:03:24   LB   69.7 0.2  17  4.10  FF, 4->i
    81- 59 A 01-02-15 18:33:13   LB   33.4 0.5   4  8.3   AA, 4->i
    81- 59 A 01-03-12 18:45:47   LB   43.2 0.2  10  4.32  AA, 4->6
    81- 59 A 01-04-08 20:10:35   LB   45.1 0.2  21  2.15  FF, 5->i
    81- 59 A 01-04-21 20:09:41   LB  191.4 0.2  22  8.70  FF, 4->i, sm, 6
    
    As you can see the periods seems to vary, but this is due to the fact
    that sometimes secondary flashes are bright and also counted. even
    flashes in between as on April 8th.
    The corrected "main'' period becomes:
    4.20 --- 4.10 4.15 4.32 4.30 4.35 sec
    
    This fits well with Marks obs of ''every 5 seconds or so''.
    
    Greetings
    Leo Barhorst
    
    
    
    
    Original message:
    -------------------------------------
    Mark Harris wrote:
    
    > On 20th April, 2001 at 21.24 BST (20.24 GMT), I spotted a flashing
    > satellite    <snip>    . It
    > was flashing every 5 seconds or so.
    
    Ted Molczan wrote:
    
    NOAA 7, a known flasher, seems to be a good match in terms of time,
    proximity
    to Castor and Pollux and direction of travel:
    
    NOAA 7           3.7  1.9  0.0  6.1 v 5.70
    1 12553U 81059A   01110.13323505 -.00000050  00000-0 -39989-5 0  6755
    2 12553  98.5215 153.3715 0010882 269.4256  90.5665 14.16275778 23606
    
    I used Findsat to make the identification.
    
    Ted Molczan
    
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