Bases: astropy.io.votable.tree.SimpleElement
COOSYS element: defines a coordinate system.
The keyword arguments correspond to setting members of the same name, documented below.
Attributes Summary
| ID | [required] The XML ID of the COOSYS element, used for |
| epoch | Specifies the epoch of the positions. |
| equinox | A parameter required to fix the equatorial or ecliptic systems (as e.g. |
| system | Specifies the type of coordinate system. |
Attributes Documentation
[required] The XML ID of the COOSYS element, used for cross-referencing. May be None or a string conforming to XML ID syntax.
Specifies the epoch of the positions. It must be a string specifying an astronomical year.
A parameter required to fix the equatorial or ecliptic systems (as e.g. “J2000” as the default “eq_FK5” or “B1950” as the default “eq_FK4”).
Specifies the type of coordinate system. Valid choices are:
‘eq_FK4’, ‘eq_FK5’, ‘ICRS’, ‘ecl_FK4’, ‘ecl_FK5’, ‘galactic’, ‘supergalactic’, ‘xy’, ‘barycentric’, or ‘geo_app’