orbitx.utils._tle.get_ballistic_coefficient

orbitx.utils._tle.get_ballistic_coefficient(line1: str) → float

Finds the ballistic coefficient (first derivate of the mean motion) of the satellite from the first line of the TLE. The ballistic coefficient corresponds to the characters 34 to 43 of the first line.

Parameters:

line1 (str) – The first line of the considered TLE

Returns:

The ballistic coefficient

Return type:

float

Example

line1 = "1 25544U 98067A   08264.51782528 -.00002182  00000-0 -11606-4 0  2927"
ballistic_coefficient = get_ballistic_coefficient(line1)
print(ballistic_coefficient)

-2.182e-05