- Orbit.dec(*args, **kwargs)¶
Return the declination.
t (numeric, numpy.ndarray or Quantity, optional) – Time at which to get the declination. Default is the initial time.
obs (numpy.ndarray, Quantity or Orbit, optional) – Position of observer (in kpc, arranged as [X,Y,Z]; default=object-wide default) OR Orbit object that corresponds to the orbit of the observer. Note that when Y is non-zero, the coordinate system is rotated around z such that Y’=0.
ro (float or Quantity, optional) – Physical scale in kpc for distances to use to convert. Default is object-wide default.
use_physical (bool, optional) – Use to override object-wide default for using a physical scale for output.
quantity (bool, optional) – If True, return an Astropy Quantity object. Default from configuration file.
- Return type:
float, numpy.ndarray or Quantity [*input_shape,nt]
2019-02-21: Written by Bovy (UofT).