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: 2018-08-09 15:02:16.550 UTC
10.8 cm flux = 70.000000

date             satellite   norad   epoch          decay

2018-08-13  ==>  CHALLENGER  42721   18221.033133   18225.422638
2018-08-30  ==>  DUTHSAT     42724   18220.619924   18242.611725
2018-10-10  ==>  LINK        42714   18220.996548   18283.311720
2018-11-25  ==>  VELOX-III   41935   18220.969158   18329.363462
2018-12-18  ==>  INSPIRE-2   42731   18221.171698   18352.970184
2018-12-18  ==>  EXALTA-1    42734   18221.060827   18352.834645
2018-12-20  ==>  UPSAT       42716   18220.988934   18354.201495
2019-01-19  ==>  UNSW-EC0    42723   18221.200598   19019.627762
2019-02-01  ==>  HOOPOE      42718   18220.978019   19032.857745
2019-02-16  ==>  ITF-2       41932   18220.991607   19047.114530
2019-03-19  ==>  AALTO-2     42729   18221.096156   19078.251161
2019-03-20  ==>  XCUBESAT    42707   18221.104663   19079.270309
2019-04-07  ==>  POLYITAN-2  42732   18221.180937   19097.127937
2019-04-10  ==>  QBEE        42708   18221.083981   19100.593533
2019-04-15  ==>  SPACECUBE   42717   18220.987379   19105.726911
2019-05-03  ==>  QBITO       42728   18221.000391   19123.618048
2019-05-13  ==>  HAVELSAT    42700   18221.210090   19133.576418
2019-05-13  ==>  OSIRIS-3U   43027   18220.871406   19133.569396
2019-05-14  ==>  SOMP2       42701   18221.108164   19134.667167
2019-05-22  ==>  LILACSAT-1  42725   18221.177087   19142.203684
2019-06-25  ==>  SNUSAT-1A   42733   18221.197915   19176.356932
2019-06-27  ==>  SUSAT       42730   18221.209477   19178.560119
2019-06-28  ==>  BEEAGLESAT  42736   18221.184105   19179.441236
2019-07-17  ==>  SNUSAT-1B   42727   18220.681148   19198.550212
2019-08-12  ==>  BIRD-B      42823   18220.048124   19224.430152
2019-08-14  ==>  BIRD-M      42822   18221.010837   19226.238422
2019-08-17  ==>  BIRD-J      42820   18220.839581   19229.320084
2019-08-18  ==>  BIRD-N      42824   18221.034968   19230.595489
2019-08-20  ==>  CSUNSAT1    42715   18221.192927   19232.138623
2019-08-27  ==>  BIRD-G      42821   18221.102458   19239.604890
2019-09-04  ==>  PHOENIX     42706   18220.995724   19247.267062
2019-09-20  ==>  ZA-AEROSAT  42713   18221.007057   19263.340673
2019-10-18  ==>  NJUST-1     42722   18221.101494   19291.429232
2019-10-18  ==>  XW-2F       42722   18221.101494   19291.429232
2019-10-26  ==>  AOXIANG-1   42735   18221.448053   19299.390672
2019-11-29  ==>  TANUSHA-1   42911   18221.204743   19333.855516
2019-12-24  ==>  TANUSHA-2   42912   18221.036746   19358.571848
2020-03-09  ==>  TPU-120     42910   18221.195774   20069.830115
2020-08-27  ==>  IRAZU       43468   18220.116617   20240.269288
2020-08-27  ==>  FIREBIRD-3  43468   18220.116617   20240.269288
2021-01-21  ==>  UBAKUSAT    43466   18220.768361   21021.307000


 
calculations based on SatEvo

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