14 lines
375 B
Python
14 lines
375 B
Python
"""Three earth-gravity models for use with SGP4."""
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from collections import namedtuple
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from sgp4.propagation import getgravconst
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EarthGravity = namedtuple(
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'EarthGravity',
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'tumin mu radiusearthkm xke j2 j3 j4 j3oj2',
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)
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wgs72old = EarthGravity(*getgravconst('wgs72old'))
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wgs72 = EarthGravity(*getgravconst('wgs72'))
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wgs84 = EarthGravity(*getgravconst('wgs84'))
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