DK3WN SatBlog

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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: 2017-07-16 08:59:58.320 UTC
10.8 cm flux = 92.000000

date             satellite   norad   epoch          decay

2017-09-08  ==>  INFLATESAIL 42770   17196.887224   17251.506259
2017-10-23  ==>  NODES-2     41477   17196.902805   17296.096750
2017-10-29  ==>  NODES-1     41478   17196.893196   17302.519441
2018-09-20  ==>  COLUMBIA    42702   17196.567711   18263.545207
2018-09-23  ==>  STARS-CM    41895   17196.550448   18266.815891
2018-09-23  ==>  STARS-CD    41895   17196.550448   18266.815891
2018-11-08  ==>  ATLANTIS    42737   17196.725993   18312.004214
2018-12-04  ==>  SGSAT       42703   17196.770718   18338.903140
2018-12-31  ==>  UCLSAT      42796   17196.930306   18365.958561
2019-06-05  ==>  CHALLENGER  42721   17196.732133   19156.680491
2019-06-17  ==>  BEEAGLESAT  41935   17196.771153   19168.086406
2019-06-17  ==>  VELOX-III   41935   17196.771153   19168.086406
2019-07-06  ==>  ICECUBE     42705   17196.786710   19187.332211
2019-07-15  ==>  DUTHSAT     42724   17196.543239   19196.286335
2019-07-25  ==>  UPSAT       42716   17196.784797   19206.600705
2019-08-12  ==>  BRICSAT     40655   17195.083210   19224.439954
2019-08-12  ==>  LINK        42714   17196.664193   19224.714038
2019-08-15  ==>  HOOPOE      42718   17196.723506   19227.810886
2019-08-29  ==>  HAVELSAT    42700   17196.845671   19241.876486
2019-09-17  ==>  EXALTA-1    42734   17196.737769   19260.405751
2019-10-19  ==>  UNSW-EC0    42723   17196.545863   19292.409301
2019-11-14  ==>  INSPIRE-2   42731   17196.544982   19318.572869
2019-11-16  ==>  ITF-2       41932   17196.530770   19320.592128
2019-11-28  ==>  SPACECUBE   42717   17196.789736   19332.715172
2019-12-11  ==>  QBEE        42708   17196.592392   19345.124944
2019-12-15  ==>  XCUBESAT    42707   17196.591083   19349.227437
2019-12-15  ==>  QBITO       42728   17196.546783   19349.417711
2019-12-21  ==>  POLYITAN-2  42732   17196.738362   19355.836369
2019-12-21  ==>  PRATHAM     42732   17196.738362   19355.836369
2019-12-25  ==>  SOMP2       42701   17196.784018   19359.475717
2020-01-02  ==>  AALTO-2     42729   17196.546638   20002.554049
2020-01-05  ==>  PHOENIX     42706   17196.526086   20005.825940
2020-01-14  ==>  CXBN-2      42704   17196.532117   20014.578132
2020-01-26  ==>  SNUSAT-1A   42733   17196.548215   20026.190196
2020-01-26  ==>  SNUSAT-1B   42733   17196.548215   20026.190196
2020-01-26  ==>  SNUSAT-1A   42733   17196.548215   20026.190196
2020-01-26  ==>  SNUSAT-1B   42733   17196.548215   20026.190196
2020-04-05  ==>  BEEAGLESAT  42736   17196.741936   20096.457105


 
calculations based on SatEvo