RE: video of that so far unid leo sat

From: Ted Molczan (ssl2molcz@rogers.com)
Date: Sun Sep 16 2007 - 15:01:02 EDT

  • Next message: Gerhard HOLTKAMP: "Visual Observations of SELENE"

    Kevin Fetter wrote:
    
    > I had wrote a message, about what appears to be a unid.
    > 
    > http://www.satobs.org/seesat/Sep-2007/0113.html
    > 
    > The correct time it passed that star, is 1:42:47 UTC ( Sept 14 )
    > 
    > Here's the video, showing it.
    > 
    > http://www.kfetter.com/satvideo/other/SEPT14UNID.wmv
    > 
    > Still unable to match it to, any satellite.
    
    Today, Kevin sent me the URL of another video, showing its entry into eclipse:
    
    http://www.kfetter.com/satvideo/other/SEPT14UNID2.wmv
    
    He identified the bright star as Markab (Alp Peg) 23 h 04 m R.A, +15 Deg 12 m
    Dec
    
    I have extracted a couple of positions:
    
    92002 07 757A   1775 G 20070914014330044 36 25 2304636+163640 37 S
    92002 07 757A   1775 G 20070914014247402 36 25 2244313+225163 37 S
    
    which yield the following approximate circular orbit:
    
    1 90000U          07257.07138197  .00000000                   0    0
    2 90000  51.2798 176.8310 0000001    .0000 122.8726 12.36375677    0
    
    The orbital plane is within about 20 deg of some of the debris of 97070F /
    25054, which broke up in February, and it is my guess that Kevin observed an
    uncatalogued piece. 
    
    To-date, only three pieces of debris from the break-up have been catalogued:
    97070G-J / 32022-24. Their orbits are nothing like the above circular
    approximation. Typical mean motion is between about 5.5 and 6 rev/d. Perigee
    height is within a few hundred km of 1000 km. Latitude of perigee currently is
    around 45 N, same as Kevin's latitude.
    
    Here is the message that led to the discovery of the 97070F break-up:
    
    http://satobs.org/seesat/Feb-2007/0158.html
    
    Ted Molczan
    
    -------------------------------------------------------------------------
    Subscribe/Unsubscribe info, Frequently Asked Questions, SeeSat-L archive:  
    http://www.satobs.org/seesat/seesatindex.html
    



    This archive was generated by hypermail 2b29 : Sun Sep 16 2007 - 15:02:30 EDT