def load_gp_from_celestrak(*,
catalog_number=None,
international_designator=None,
name=None):
"""Load general perturbations orbital data from Celestrak.
Returns
-------
Satrec
Orbital data from specified object.
Notes
-----
This uses the OMM XML format from Celestrak as described in [1]_.
References
----------
.. [1] Kelso, T.S. "A New Way to Obtain GP Data (aka TLEs)"
https://celestrak.com/NORAD/documentation/gp-data-formats.php
"""
# Assemble query, raise an error if malformed
url = _generate_url(catalog_number, international_designator, name)
# Make API call, raise an error if data is malformed
fields = _make_query(url)
# Initialize and return Satrec object
sat = Satrec()
omm.initialize(sat, fields)
return sat
def test_omm_csv_matches_old_tle():
line0, line1, line2 = VANGUARD_TLE.splitlines()
sat1 = Satrec.twoline2rv(line1, line2)
fields = next(omm.parse_csv(StringIO(VANGUARD_CSV)))
sat2 = Satrec()
omm.initialize(sat2, fields)
assert_satellites_match(sat1, sat2)