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: 2017-03-12 06:39:22.060 UTC
10.8 cm flux = 71.000000

date             satellite   norad   epoch          decay

2017-05-11  ==>  STMSAT-1    41476   17070.577331   17131.261607
2017-05-29  ==>  MINXSS-1    41474   17070.724407   17149.103746
2017-11-02  ==>  NODES-1     41478   17070.619132   17306.435284
2017-11-02  ==>  PERSEUS-M1  41478   17070.619132   17306.435284
2017-11-04  ==>  NODES-2     41477   17070.473033   17308.348673
2018-03-23  ==>  STARS-CM    41895   17070.861247   18082.449108
2018-03-23  ==>  STARS-CD    41895   17070.861247   18082.449108
2018-03-23  ==>  STARS-CM    41895   17070.861247   18082.449108
2018-03-23  ==>  STARS-CD    41895   17070.861247   18082.449108
2018-06-30  ==>  VELOX-III   41935   17070.702269   18181.425613
2018-08-09  ==>  ITF-2       41932   17070.636872   18221.060992
2018-08-25  ==>  BRICSAT     40655   17069.197827   18237.767345
2019-10-05  ==>  PSAT        40654   17069.241859   19278.166941

 
calculations based on SatEvo

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