HeliocentricTrueEcliptic¶
-
class
astropy.coordinates.
HeliocentricTrueEcliptic
(*args, **kwargs)[source] [edit on github]¶ Bases:
astropy.coordinates.BaseCoordinateFrame
Heliocentric ecliptic coordinates. These origin of the coordinates are the center of the sun, with the x axis pointing in the direction of the true (not mean) equinox as at the time specified by the
equinox
attribute (as seen from Earth), and the xy-plane in the plane of the ecliptic for that date.This frame has one frame attribute:
equinox
The date to assume for this frame. Determines the location of the x-axis and the location of the Earth and Sun.
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 NoneA representation object or None to have no data (or use the other keywords)
l :
Angle
, optional, must be keywordThe ecliptic longitude for this object (
b
must also be given andrepresentation
must be None).b :
Angle
, optional, must be keywordThe ecliptic latitude for this object (
l
must also be given andrepresentation
must be None).r :
Quantity
, optional, must be keywordThe Distance for this object from the sun’s center. (
representation
must be None).Attributes Summary
default_representation
equinox
frame_attributes
frame_specific_representation_info
name
Attributes Documentation
-
default_representation
¶
-
equinox
= <Time object: scale='utc' format='jyear_str' value=J2000.000>¶
-
frame_attributes
= OrderedDict([('equinox', <astropy.coordinates.baseframe.TimeFrameAttribute object at 0x7ff5256fe390>)])¶
-
frame_specific_representation_info
¶
-
name
= 'heliocentrictrueecliptic'¶