orbitx.utils._tle.get_second_derivative

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orbitx.utils._tle.get_second_derivative#

orbitx.utils._tle.get_second_derivative(line1: str) → float[source]#

Finds the second derivative of the satellite mean motion from the first line of the TLE. The second derivative corresponds to the characters 45 to 52 of the first line.

Parameters:: line1 (str) – The first line of the considered TLE
Returns:: The second derivative of the satellite mean motion
Return type:: float

Example

line1 = "1 25544U 98067A   08264.51782528 -.00002182  12345-5 -11606-4 0  2927"
ballistic_coefficient = get_ballistic_coefficient(line1)
print(ballistic_coefficient)

1.2345e-06