Ballistic coefficient from bstar
bal = CL_tle_getBalCoef(tle)
This function computes the ballistic coefficient (cd*A/m) from bstar.
The balistic coefficient is computed by:
bal = 12.741621 * bstar (bal in m^2/kg)
The Earth radius value used is that from the "wgs72" set of constants.
TLE structure (size N)
Ballistic coefficient = Cd*A/M [m^2/kg] (1xN)
CNES - DCT/SB/MS