Decay watch: January 17

Alan Pickup (alan@wingar.demon.co.uk)
Sun, 17 Jan 1999 17:06:48 +0000

SpaceCom's current decay notices are:

Object                            Notice issued    Predicted decay
                                       UTC              UTC

#25579 = Iridium 11A CZ-2C r      Jan 16 22:20     Jan 20 13:10 +-2d

#25065 = ETS-7 H2 r               Jan 16 09:03     Jan 29 12:47 +-8d

               -------------------------------

My own current predictions:

   #    Designation    Name               Predicted decay (UTC)

 25579   98- 74 C   Iridium 11A CZ-2C r    January 20.9 +-0.7d
 25065   97- 74 C   ETS-7 H2 r             January 28   +-3d


The Iridium 11A Long March rocket, #25579, enters eclipse while
northbound near 26 deg S latitude at ~04:00 local time and leaves
eclipse while southbound over the arctic near 80 deg N at ~15.00 local
time. It reaches its low perigee while northbound in the N hemisphere so
there is a good chance of re-entry over that hemisphere.

SatEvo predicted elsets for this:

Irid 11A CZ r   10.0  3.0  0.0  3.5 d            313 x 150 km
1 25579U 98074C   99018.05656592  .02920989  19879-2  33977-3 0 91034
2 25579  86.3445 182.7872 0123261  53.0837 308.0394 16.15540497  4650
Irid 11A CZ r   10.0  3.0  0.0  3.5 d            280 x 148 km
1 25579U 98074C   99019.04572781  .03744424  38542-2  33128-3 0 91036
2 25579  86.3421 182.2301 0099793  48.8052 312.0511 16.22042678  4819


Alan
-- 
 Alan Pickup | COSPAR 2707:   55d53m48.7s N   3d11m51.2s W   156m asl
 Edinburgh   | Home:   alan@wingar.demon.co.uk    +44 (0)131 477 9144
 Scotland    | SatEvo page:     http://www.wingar.demon.co.uk/satevo/