Obs of 2002 Jul 31 UTC

From: Ted Molczan (molczan@rogers.com)
Date: Wed Jul 31 2002 - 02:37:02 EDT

  • Next message: Jari: "ERS-2 & ERS-1 Obs"

    I observed the following points:
    
    24680 96 072A   2701 G 20020731021657230 17 25 2001558+083058 28 S
    24680 96 072A   2701 G 20020731021710460 17 25 2007493+163879 47 S
    25744 99 028A   2701 G 20020731022950330 17 25 2125238+651332 47 R
    25744 99 028A   2701 G 20020731023129230 17 25 2138704+554745 57 R
    25744 99 028A   2701 G 20020731023206080 17 25 2142456+521962 77 R
    25744 99 028A   2701 G 20020731023355500 17 25 2152010+422137 47 R
    25744 99 028A   2701 G 20020731023705120 17 25 2205039+264028 37 R
    25744 99 028A   2701 G 20020731024021250 17 25 2216815+125489 47 R
    25744 99 028A   2701 G 20020731024206370 17 25 2222949+063005 77 R
    25744 99 028A   2701 G 20020731024402870 17 25 2229765+000544 18 R
    
    Updated elements:
    
    The object we have called 99028A since its launch continues to exhibit
    SRP (solar radiation pressure) perturbation, which since 18 Jul is
    causing its altitude to slowly increase, as evidenced by the negative
    decay terms:
    
    1 25744U 99028A   02212.07020833 -.00000034  00000-0 -53131-2 0    07
    2 25744  63.4407 142.1650 0237602 293.2933  64.3596  9.69786117    05
    
    WRMS error = 0.01 deg
    
    The object was rotating, but the brightness variations appeared to
    decrease as the phase angle approached zero. Could it be that its spin
    axis is perpendicular to the sun?
    
    Ted Molczan
    
    
    -----------------------------------------------------------------
    Unsubscribe from SeeSat-L by sending a message with 'unsubscribe'
    in the SUBJECT to SeeSat-L-request@lists.satellite.eu.org
    http://www.satellite.eu.org/seesat/seesatindex.html
    



    This archive was generated by hypermail 2b29 : Wed Jul 31 2002 - 02:42:56 EDT