orbitx.utils._tle.get_drag_term

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orbitx.utils._tle.get_drag_term#

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

Finds the drag term of the satellite from the first line of the TLE. The drag term corresponds to the characters 54 to 61 of the first line. The drag term is also known as .. math`B^star` or radiation pressure coefficient (units of 1/(Earth radii))

Parameters:

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

Returns:

The drag term

Return type:

float

Example

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

-1.1606e-5
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