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.

Table below shows predicted decay date

last update: 2020-03-14 10:42:34.690 UTC
10.8 cm flux = 69.000000

date             satellite   norad   epoch          decay

2020-05-04  ==>  NSIGHT-1    42726   20074.049610   20125.428959
2020-06-17  ==>  UBAKUSAT    43466   20074.155456   20169.855398
2020-08-15  ==>  TANUSHA-4   43598   20073.796872   20228.355146
2020-09-04  ==>  TANUSHA-3   43597   20073.795672   20248.005843
2020-10-01  ==>  ENDUROSAT   43551   20073.642275   20275.270338
2020-10-22  ==>  FOSSASAT-1  44829   20073.601941   20296.056681
2020-10-25  ==>  SMOG-P      44832   20073.893772   20299.388388
2020-10-28  ==>  ATL-1       44830   20073.909986   20302.832902
2020-11-03  ==>  BIRD-BT     43591   20073.363153   20308.451350
2020-11-05  ==>  TRSI        44831   20073.909419   20310.160459
2020-11-08  ==>  BIRD-MY     43589   20073.390670   20313.584449
2020-11-20  ==>  BIRD-PH     43590   20073.002056   20325.056517
2020-12-14  ==>  SIRIUSSAT-1 43595   20073.796960   20349.203504
2020-12-19  ==>  SIRIUSSAT-2 43596   20073.788695   20354.554078
2021-01-07  ==>  EQUISAT     43552   20073.683021   21007.962756
2021-02-08  ==>  UBAKUSAT    43467   20074.128783   21039.283791
2021-05-04  ==>  PW-SAT2     43814   20073.795818   21124.225343
2021-05-25  ==>  DELPHINI    44030   20073.716382   21145.529737
2021-06-28  ==>  OCULUS-ASR  44356   20074.240719   21179.020891
2021-07-04  ==>  TW-1C       40926   20074.106065   21185.064635
2021-08-17  ==>  SWIATOWID   44426   20074.111049   21229.484946
2021-08-26  ==>  TW-1B       40927   20074.184760   21238.098420
2022-01-11  ==>  ENTRYSAT    44429   20073.599722   22011.197951
2022-01-11  ==>  MAXVALIER   44429   20073.599722   22011.197951
2022-04-29  ==>  RAAVANA     44329   20073.752460   22119.966199
2022-05-25  ==>  NEPALISAT   44331   20073.746628   22145.906591
2022-06-04  ==>  CP9         44360   20073.933857   22155.906877
2022-06-06  ==>  UGUISU      44330   20073.760565   22157.885559
2022-07-27  ==>  SPOOQY-1    44332   20073.424309   22208.683817
2022-07-31  ==>  ECAMSAT     43019   20074.139941   22212.243831
2022-08-25  ==>  PSAT        40654   20073.418169   22237.581170

 
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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