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: 2019-08-09 12:28:45.300 UTC
10.8 cm flux = 69.000000

date             satellite   norad   epoch          decay

2019-12-16  ==>  BRICSAT     40655   19220.435186   19350.416524
2020-05-17  ==>  IRAZU       43468   19221.014676   20138.200676
2020-06-22  ==>  NSIGHT-1    42726   19220.118350   20174.964173
2020-10-11  ==>  UBAKUSAT    43466   19221.064184   20285.595371
2020-12-30  ==>  OCULUS-ASR  44356   19220.483906   20365.859487
2021-01-25  ==>  TANUSHA-4   43598   19220.877899   21025.857793
2021-02-01  ==>  TANUSHA-3   43597   19220.822041   21032.531945
2021-03-25  ==>  ENDUROSAT   43551   19221.080009   21084.034325
2021-03-25  ==>  GRIFEX      43551   19221.080009   21084.034325
2021-03-29  ==>  TW-1C       40926   19221.084706   21088.053003
2021-05-28  ==>  BIRD-BT     43591   19221.020944   21148.732023
2021-05-30  ==>  BIRD-PH     43590   19220.009019   21150.203838
2021-06-08  ==>  TW-1B       40927   19221.168359   21159.153226
2021-07-02  ==>  BIRD-MY     43589   19220.781893   21183.044830
2021-08-02  ==>  SIRIUSSAT-1 43595   19221.034486   21214.908509
2021-08-15  ==>  UBAKUSAT    43467   19221.066081   21227.364172
2021-10-03  ==>  PW-SAT2     43814   19220.787451   21276.544450
2021-10-10  ==>  EQUISAT     43552   19220.783643   21283.097981
2021-11-28  ==>  SIRIUSSAT-2 43596   19221.134064   21332.115332
2021-11-29  ==>  CP9         44360   19221.210815   21333.206121

 
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.

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