coordstr : str
A single string with the coordinates. Cannot be used with
dec and ra nor x/y/z.
ra : Angle, float, int, str
This must be given with dec.
dec : Angle, float, int, str
This must be given with ra.
distance : Distance, optional
This may be given with dec and ra or coordstr
and not x, y, or z. If not given, None (unit sphere)
will be assumed.
x : number
The first cartesian coordinate. Must be given with y and z
and not with ra or dec nor coordstr.
y : number
The second cartesian coordinate. Must be given with x and z
and not with ra or dec nor coordstr.
z : number
The third cartesian coordinate. Must be given with x and y
and not with ra or dec nor coordstr.
cartpoint : CartesianPoints
A cartesian point with the coordinates. Cannot be used with
any other arguments.
unit :
The unit parameter’s interpretation depends on what other
parameters are given:
- If ra and dec or coordstr are given:
unit must be a length-2 sequence specifying the units of
ra and dec, respectively. They can be either
UnitBase objects or strings that will be
converted using Unit. They can also be
None to attempt to automatically interpret the units (see
Angle for details.) If unit
is just None, this will be interpreted the same as
(None, None).
- If x, y, and z are given:
unit must be a single unit with dimensions of length
obstime : Time or None
The time of observation for this coordinate. If None, it will be taken
to be the same as the equinox.
Alternatively, a single argument that is any kind of spherical coordinate :
can be provided, and will be converted to ICRSCoordinates and used as this :
coordinate. :
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