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: 2018-06-10 20:15:35.690 UTC
10.8 cm flux = 67.000000

date             satellite   norad   epoch          decay

2018-08-25  ==>  CHALLENGER  42721   18161.489616   18237.932604
2018-09-05  ==>  DUTHSAT     42724   18161.063619   18248.823958
2018-10-09  ==>  LINK        42714   18161.179069   18282.433677
2018-12-01  ==>  VELOX-III   41935   18160.857043   18335.815881
2018-12-27  ==>  UPSAT       42716   18160.887487   18361.772056
2019-01-03  ==>  EXALTA-1    42734   18161.069043   19003.497222
2019-02-02  ==>  INSPIRE-2   42731   18161.210725   19033.313924
2019-02-06  ==>  UNSW-EC0    42723   18161.214997   19037.580393
2019-03-03  ==>  HOOPOE      42718   18161.211204   19062.038249
2019-03-17  ==>  ITF-2       41932   18161.456635   19076.176211
2019-03-24  ==>  QBITO       42728   18161.129356   19083.507053
2019-03-27  ==>  AALTO-2     42729   18161.109687   19086.354474
2019-04-26  ==>  POLYITAN-2  42732   18161.074927   19116.338010
2019-04-29  ==>  XCUBESAT    42707   18161.197786   19119.384318
2019-05-10  ==>  OSIRIS-3U   43027   18161.123575   19130.636358
2019-05-13  ==>  SNUSAT-1A   42733   18161.091575   19133.412724
2019-05-24  ==>  SNUSAT-1B   42727   18161.116781   19144.097222
2019-05-26  ==>  QBEE        42708   18161.268177   19146.207618
2019-06-01  ==>  SPACECUBE   42717   18161.230467   19152.111765
2019-06-07  ==>  HAVELSAT    42700   18161.469175   19158.291682
2019-06-25  ==>  BRICSAT     40655   18159.147924   19176.004147
2019-06-27  ==>  LILACSAT-1  42725   18161.169224   19178.906061
2019-07-02  ==>  SUSAT       42730   18161.477082   19183.419380
2019-07-05  ==>  SOMP2       42701   18161.261800   19186.896642
2019-07-18  ==>  BIRD-N      42824   18160.945628   19199.518712
2019-07-19  ==>  BIRD-B      42823   18160.922377   19200.158937
2019-07-22  ==>  BIRD-J      42820   18160.893661   19203.150978
2019-07-26  ==>  BEEAGLESAT  42736   18160.891137   19207.500995
2019-08-02  ==>  BIRD-M      42822   18160.925940   19214.309710
2019-08-07  ==>  CSUNSAT1    42715   18160.890728   19219.890467
2019-08-27  ==>  BIRD-G      42821   18160.879474   19239.795235
2019-08-29  ==>  PHOENIX     42706   18161.164571   19241.754615
2019-09-04  ==>  ZA-AEROSAT  42713   18161.123787   19247.866264
2019-12-05  ==>  AOXIANG-1   42735   18161.529395   19339.030405
2019-12-13  ==>  NJUST-1     42722   18161.499052   19347.835233
2019-12-17  ==>  TANUSHA-1   42911   18161.476282   19351.773146
2019-12-24  ==>  TANUSHA-2   42912   18161.284658   19358.584479
2020-02-27  ==>  IRAZU       43468   18161.169111   20058.486889
2020-04-25  ==>  TPU-120     42910   18161.488595   20116.576975
2020-05-02  ==>  UBAKUSAT    43466   18161.252120   20123.586802
2020-11-09  ==>  TW-1C       40926   18161.564230   20314.480745
2020-11-11  ==>  UBAKUSAT    43467   18160.856905   20316.948898
2020-12-19  ==>  TW-1B       40927   18161.581102   20354.598826

 
calculations based on SatEvo

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