Bases: astropy.coordinates.BaseCoordinateFrame
Geocentric ecliptic coordinates. These origin of the coordinates are the geocenter (Earth), with the x axis pointing to the true (not mean) equinox at the time specified by the equinox attribute, and the xy-plane in the plane of the ecliptic for that date.
Be aware that the definition of “geocentric” here means that this frame includes light deflection from the sun, aberration, etc when transforming to/from e.g. ICRS.
This frame has one frame attribute:
The date to assume for this frame. Determines the location of the x-axis and the location of the Earth (necessary for transformation to non-geocentric systems).
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: | representation : BaseRepresentation or None
lon : Angle, optional, must be keyword
lat : Angle, optional, must be keyword
distance : Quantity, optional, must be keyword
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Attributes Summary
default_representation | |
equinox | |
frame_attributes | |
frame_specific_representation_info | |
name |
Attributes Documentation