EarthOrientation

class ssapy.body.EarthOrientation(recalc_threshold=2592000)

Bases: object

Orientation of earth in GCRF. This is a callable class that returns the orientation matrix at a given time.

Parameters:

recalc_threshold (float) – Threshold for recomputing the orientation matrix. Default is 30 days.

Methods Summary

__call__(t[, _E])

Return the orientation matrix at time t.

Methods Documentation

__call__(t, _E=None)

Return the orientation matrix at time t.

Parameters:

t (float) – Time in GPS seconds.

Returns:

E – Orientation matrix at time t.

Return type:

numpy.ndarray