Decay


Low Earth orbiting satellites experience orbital decay and have physical lifetimes determined almost entirely by their interaction with the atmosphere. The drag force that such a satellite experiences is due to its interaction with the few air molecules that are present at these altitudes. The density of the atmosphere at LEO heights is controlled by solar X-ray flux and particle precipitation from the magnetosphere and so varies with the current space weather conditions.

last update: 2019-05-25 11:40:57.540 UTC
10.8 cm flux = 67.000000

date             satellite   norad   epoch          decay

2019-07-03  ==>  AOXIANG-1   42735   19145.112771   19184.160019
2019-08-01  ==>  NJUST-1     42722   19144.956758   19213.051822
2020-03-13  ==>  BRICSAT     40655   19144.369620   20073.620297
2020-05-31  ==>  IRAZU       43468   19144.862716   20152.906586
2020-09-02  ==>  NSIGHT-1    42726   19145.028080   20246.320812
2020-10-29  ==>  UBAKUSAT    43466   19145.086604   20303.550024
2020-12-30  ==>  TANUSHA-4   43598   19144.848922   20365.616334
2021-01-31  ==>  TANUSHA-3   43597   19144.848914   21031.536072
2021-02-13  ==>  D-SAT       25544   19145.383415   21044.560251
2021-02-13  ==>  ISS         25544   19145.383415   21044.560251
2021-03-11  ==>  ENDUROSAT   43551   19144.361912   21070.992797
2021-03-11  ==>  KKS-1       43551   19144.361912   21070.992797
2021-05-16  ==>  PW-SAT2     43814   19145.131677   21136.718593
2021-06-20  ==>  BIRD-MY     43589   19144.327657   21171.533117
2021-06-21  ==>  BIRD-PH     43590   19145.155215   21172.518006
2021-07-04  ==>  BIRD-BT     43591   19144.314649   21185.056239
2021-09-14  ==>  EQUISAT     43552   19145.155527   21257.479287
2021-09-28  ==>  SIRIUSSAT-2 43596   19144.956482   21271.477742
2021-09-29  ==>  SIRIUSSAT-1 43595   19144.864620   21272.750983
2021-12-11  ==>  UBAKUSAT    43467   19145.109285   21345.002258
2022-01-02  ==>  TW-1C       40926   19145.196397   22002.844202

 
calculations based on SatEvo

One thought on “Decay”

  1. 2019-02-27 ==> FOX-1C 42700 19037.681851 19058.483559
    2019-02-27 ==> HAVELSAT 42700 19037.681851 19058.483559

    FOX-1C/AO-95 is object 43770.

Leave a Reply