Re: Zvezda pre- and post-burn elsets

From: Daniel Deak (dan.deak@sympatico.ca)
Date: Thu Jul 20 2000 - 18:16:33 PDT

  • Next message: Aris Tanone: "Atlas 2AS"

    Hello all,
    
    Here is the latest manoeuvering schedule for Zvezda according to Vladimir
    Agapov on July 20 :
    
    Date    Time,UTC  dV,m/s
    Jul 20  02:47:38   4.76
    Jul 23  01:22:42   7.46
    Jul 23  01:54:33  10.24
    Jul 24  00:37:21   3.00
    
    He also explained :
    Zarya made two burns of dV=1 m/s on July 18 and Zvezda is manoeuvring
    to catch up on Zarya toward an "aiming point" at the 219th orbit of Zvezda
    over the South Atlantic at 00:13:31 UTC on July 26. At that point, Zvezda
    should be under Zarya at a relative distance in radial direction no more than 1.5
    km and relative velocity along line of sight no more than 5 m/s. Relative
    distances and velocities in two other directions should be equal to zero.
    
    After that, Zarya is to fly around Zvezda from above (the aiming point)
    at a distance no closer than 300 meters and get in front of Zvezda for
    the final phase of docking. So Zarya should be the leading object in orbit
    at that time. Initial contact (docking) between both modules is now
    scheduled for 00:54 UTC on July 26.
    
    The exact manoeuvring scheme will be known after the final Zvezda
    manoeuvres on July 23 and 24.
    
    Current orbital elements for the ISS components :
    ISS (ZARYA)
    1 25544U 98067A   00202.80876476  .00051079  00000-0  48561-3 0  8550
    2 25544  51.5841 328.3078 0007157 152.9920 345.1918 15.66304098 95204
    ISS (ZVEZDA)
    1 26400U 00037A   00202.81368084  .00130718  16613-4  60544-3 0   369
    2 26400  51.5814 328.6363 0043916 100.3044 260.3629 15.81758837  1376
    
    Dan
    --
    Daniel Deak
    Drummondville, Québec
    
    COSPAR site 1746 : 45.8537°N, 72.4857°W, 90 m., UTC-5:00
    
    E-mail : dan.deak@obsat.com        ICQ : 52770063
    Site en francais sur les satellites:
    French-language satellite web site : http://www.obsat.com
    
    
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