astropy
BUG: MPC no results for some named asteroids
These are examples from the test suite that used to work. cc @mkelley. I think this is a separate issue from #2466
In [9]: MPC.query_object(target_type='asteroid', name='vesta')
Out[9]: []
In [10]: MPC.query_object(target_type='asteroid', name='pallas')
Out[10]: []
In [11]: MPC.query_object(target_type='asteroid', name='ceres')
Out[11]:
[{'absolute_magnitude': '3.33',
'aphelion_distance': '2.983',
'arc_length': 80743,
'argument_of_perihelion': '73.63703',
'ascending_node': '80.2685812',
'critical_list_numbered_object': False,
'delta_v': 10.5,
'designation': None,
'earth_moid': 1.58476,
'eccentricity': '0.078501',
'epoch': '2022-01-21.0',
'epoch_jd': '2459600.5',
'first_observation_date_used': '1801-01-02.0',
'first_opposition_used': '1801',
'inclination': '10.58769',
'jupiter_moid': 2.09089,
'km_neo': False,
'last_observation_date_used': '2022-01-26.0',
'last_opposition_used': '2022',
'mars_moid': 0.93083,
'mean_anomaly': '291.37566',
'mean_daily_motion': '0.2142473',
'mercury_moid': 2.17533,
'name': 'Ceres',
'neo': False,
'number': 1,
'observations': 7372,
'oppositions': 122,
'orbit_type': 0,
'orbit_uncertainty': '0',
'p_vector_x': '-0.88197013',
'p_vector_y': '0.3308949',
'p_vector_z': '0.33561474',
'perihelion_date': '2022-12-07.30429',
'perihelion_date_jd': '2459920.8043',
'perihelion_distance': '2.5489058',
'period': '4.6',
'pha': False,
'phase_slope': '0.15',
'q_vector_x': '-0.43512388',
'q_vector_y': '-0.84529791',
'q_vector_z': '-0.31006235',
'residual_rms': '0.64',
'saturn_moid': 6.36519,
'semimajor_axis': '2.76604',
'tisserand_jupiter': 3.3,
'updated_at': '2022-06-02T15:52:39Z',
'uranus_moid': 15.8905,
'venus_moid': 1.8372}]
Note that the test was tried to be worked around in https://github.com/astropy/astroquery/pull/2526/files#r969995161, nevertheless I still see it failing locally.
This seems to be an upstream problem, as I see empty returns directly on the server, too:
https://minorplanetcenter.net/web_service/search_orbits?name=Vesta https://minorplanetcenter.net/web_service/search_orbits?name=Eros https://minorplanetcenter.net/web_service/search_orbits?name=Pallas
vs
https://minorplanetcenter.net/web_service/search_orbits?name=Ceres
cc @mkelley - who would you think to be a good person to ping about this at MPC? Could you please report this?
I can confirm that it isn't working with those examples, but is working for Ceres. I've opened a help desk ticket on this.
I've tried a few others and they worked, so far it's only Vesta, Pallas, and Eros that are not working (see #2648 for a workaround to xfail the tests)
Anyway, thanks for reporting it upstream.