Skip to main content
`Ctrl`+`K`

# TEME

class astropy.coordinates.TEME(*args, copy=True, representation_type=None, differential_type=None, **kwargs)

  Bases: `BaseCoordinateFrame`

  A coordinate or frame in the True Equator Mean Equinox frame (TEME).

  This frame is a geocentric system similar to CIRS or geocentric apparent place, except that the mean sidereal time is used to rotate from TIRS. TEME coordinates are most often used in combination with orbital data for satellites in the two-line-ephemeris format.

  Different implementations of the TEME frame exist. For clarity, this frame follows the conventions and relations to other frames that are set out in Vallado et al (2006).

  For more background on TEME, see the references provided in the See Also section of the documentation.

  Parameters:
    data `BaseRepresentation` subclass instance

      A representation object or `None` to have no data (or use the coordinate component arguments, see below).

    representation_type `BaseRepresentation` subclass, `python:str`, optional

      A representation class or string name of a representation class. This sets the expected input representation class, thereby changing the expected keyword arguments for the data passed in. For example, passing `representation_type='cartesian'` will make the classes expect position data with cartesian names, i.e. `x, y, z` in most cases unless overridden via `frame_specific_representation_info`. To see this frame’s names, check out `<this frame>().representation_info`.

    differential_type `BaseDifferential` subclass, `python:str`, `python:dict`, optional

      A differential class or dictionary of differential classes (currently only a velocity differential with key ‘s’ is supported). This sets the expected input differential class, thereby changing the expected keyword arguments of the data passed in. For example, passing `differential_type='cartesian'` will make the classes expect velocity data with the argument names `v_x, v_y, v_z` unless overridden via `frame_specific_representation_info`. To see this frame’s names, check out `<this frame>().representation_info`.

    copy bool, optional

      If `True` (default), make copies of the input coordinate arrays. Can only be passed in as a keyword argument.

  Other Parameters:
    obstime `Time`

      The time at which the frame is defined. Used for determining the position of the Earth.

  Attributes Summary

  `default_differential` | Default representation for differential data (e.g., velocity)
  `default_representation` | Default representation for position data
  `frame_attributes` |
  `frame_specific_representation_info` | Mapping for frame-specific component names
  `name` |
  `obstime` | The reference time (e.g., time of observation)

  Attributes Documentation

  default_differential

    Default representation for differential data (e.g., velocity)

  default_representation

    Default representation for position data

  frame_attributes = {'obstime': <astropy.coordinates.attributes.TimeAttribute object>}
  frame_specific_representation_info

    Mapping for frame-specific component names

  name = 'teme'
  obstime

    The reference time (e.g., time of observation)

    No default value