BaseEclipticFrame¶
-
class
astropy.coordinates.
BaseEclipticFrame
(*args, copy=True, representation_type=None, differential_type=None, **kwargs)[source] [edit on github]¶ Bases:
astropy.coordinates.BaseCoordinateFrame
A base class for frames that have names and conventions like that of ecliptic frames.
Warning
In the current version of astropy, the ecliptic frames do not yet have stringent accuracy tests. We recommend you test to “known-good” cases to ensure this frames are what you are looking for. (and then ideally you would contribute these tests to Astropy!)
Parameters: - data :
BaseRepresentation
subclass instance A representation object or
None
to have no data (or use the coordinate component arguments, see below).- lon :
Angle
, optional, must be keyword The ecliptic longitude for this object (
lat
must also be given andrepresentation
must be None).- lat :
Angle
, optional, must be keyword The ecliptic latitude for this object (
lon
must also be given andrepresentation
must be None).- distance :
Quantity
, optional, must be keyword The distance for this object from the specified location. (
representation
must be None).- pm_lon_coslat :
Angle
, optional, must be keyword The proper motion in the ecliptic longitude (including the
cos(lat)
factor) for this object (pm_lat
must also be given).- pm_lat :
Angle
, optional, must be keyword The proper motion in the ecliptic latitude for this object (
pm_lon_coslat
must also be given).- radial_velocity :
Quantity
, optional, must be keyword The radial velocity of this object.
- representation_type :
BaseRepresentation
subclass, str, optional A representation class or string name of a representation class. This sets the expected input representation class, thereby changing the expected keyword arguments for the data passed in. For example, passing
representation_type='cartesian'
will make the classes expect position data with cartesian names, i.e.x, y, z
in most cases.- differential_type :
BaseDifferential
subclass, str, dict, optional A differential class or dictionary of differential classes (currently only a velocity differential with key ‘s’ is supported). This sets the expected input differential class, thereby changing the expected keyword arguments of the data passed in. For example, passing
differential_type='cartesian'
will make the classes expect velocity data with the argument namesv_x, v_y, v_z
.- copy : bool, optional
If
True
(default), make copies of the input coordinate arrays. Can only be passed in as a keyword argument.
Attributes Summary
default_differential
default_representation
frame_specific_representation_info
name
Attributes Documentation
-
default_differential
¶
-
default_representation
¶
-
frame_specific_representation_info
¶
-
name
= 'baseeclipticframe'¶
- data :