USA 129 post-manoeuvre search elements

From: Ted Molczan (molczan@rogers.com)
Date: Sat Jun 07 2003 - 20:36:32 EDT

  • Next message: Robert Holdsworth: "Re: abuse of my email adress"

    USA 129 (96072A / 24680) manoeuvred sometime between Alberto Rango's
    observation of 2003 Jun 04 at 20:06 UTC and mine of Jun 06 at 02:51 UTC.
    
    The orbit is well placed for evening searchers at mid-northern latitudes.
    
    Assuming this was the expected simple reboost, involving a short burn at a
    perigee-crossing, then the following search elements should bracket the
    possible new orbits:
    
    USA 129         15.0  3.0  0.0  5.3 v
    1 70002U          03155.90557870  .00031951  00000-0  35000-3 0    07
    2 70002  97.8269 219.1711 0491800  45.4990   0.0000 14.84320000    09
    
    1 70003U          03155.97290509  .00031955  00000-0  35000-3 0    02
    2 70003  97.8269 219.2376 0492000  45.2773   0.0000 14.84280000    03
    
    1 70012U          03156.57877315  .00031766  00000-0  35000-3 0    05
    2 70012  97.8269 219.8360 0497500  43.2825   0.0000 14.83000000    07
    
    1 70015U          03156.78071759  .00031470  00000-0  35000-3 0    01
    2 70015  97.8269 220.0354 0504200  42.6176   0.0000 14.81400000    07
    
    1 70018U          03156.98267361  .00030630  00000-0  35000-3 0    09
    2 70018  97.8269 220.2349 0529500  41.9527   0.0000 14.75500000    02
    
    The object is unlikely to be earlier than elset 70002 and is unlikely to be
    later than elset 70018. Searchers should plot at least those two elsets, to
    ensure that they look in the correct part of the sky. 
    
    Earth's rotation will cause a large difference between the 70002 and 70018
    tracks, especially on high-elevation passes, so plotting the intermediate
    elsets (70003, 70012 and 70015) will provide useful interpolation between the
    extremes.
    
    My sky became overcast within the past hour, and I am doubtful that it will
    clear in time for my pass.
    
    Ted Molczan
    
    
    -----------------------------------------------------------------
    To unsubscribe from SeeSat-L, send a message with 'unsubscribe'
    in the SUBJECT to SeeSat-L-request@satobs.org
    List archived at http://www.satobs.org/seesat/seesatindex.html
    



    This archive was generated by hypermail 2b29 : Sat Jun 07 2003 - 20:42:25 EDT