FK5¶
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class
astropy.coordinates.
FK5
(*args, **kwargs)[source] [edit on github]¶ Bases:
astropy.coordinates.BaseRADecFrame
A coordinate or frame in the FK5 system.
Note that this is a barycentric version of FK5 - that is, the origin for this frame is the Solar System Barycenter, not the Earth geocenter.
The frame attributes are listed under Other Parameters.
Parameters: representation :
BaseRepresentation
or NoneA representation object or
None
to have no data (or use the other keywords below).ra :
Angle
, optional, must be keywordThe RA for this object (
dec
must also be given andrepresentation
must be None).dec :
Angle
, optional, must be keywordThe Declination for this object (
ra
must also be given andrepresentation
must be None).distance :
Quantity
, optional, must be keywordThe Distance for this object along the line-of-sight. (
representation
must be None).pm_ra_cosdec :
Quantity
, optional, must be keywordThe proper motion in Right Ascension (including the
cos(dec)
factor) for this object (pm_dec
must also be given).pm_dec :
Quantity
, optional, must be keyword Theproper motion in Declination for this object (
pm_ra_cosdec
must also be given).radial_velocity :
Quantity
, optional, must be keywordThe radial velocity of this object.
copy : bool, optional
If
True
(default), make copies of the input coordinate arrays. Can only be passed in as a keyword argument.Other Parameters: equinox :
Time
The equinox of this frame.
Attributes Summary
default_differential
default_representation
equinox
frame_attributes
frame_specific_representation_info
name
Attributes Documentation
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default_differential
¶
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default_representation
¶
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equinox
= <Time object: scale='utc' format='jyear_str' value=J2000.000>¶
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frame_attributes
= OrderedDict([('equinox', <astropy.coordinates.frame_attributes.TimeFrameAttribute object>)])¶
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frame_specific_representation_info
¶
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name
= 'fk5'¶
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