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Using Sexagesimal or Galactic Coordinates

The NASA Exoplanet Archive table processing includes an analysis of the input to determine a location on the sky. Coordinates can be entered as:

If any of the column pairs in the table below are given, they will be interpreted as shown in the Result column.

Note: The input column names are not case-sensitive.

Right AscensionDeclinationResult
radecEquatorial
cra cdec Equatorial *
ra2000 dec2000 Equatorial J2000
ra2000 de2000 Equatorial J2000
_raj2000 _dej2000 Equatorial J2000
raj2000 dej2000 Equatorial J2000
raj2000 decj2000 Equatorial J2000
ra1950 dec1950 Equatorial B1950
ra1950 de1950 Equatorial B1950
rab1950 deb1950 Equatorial B1950
rab1950 decb1950 Equatorial B1950
elon elat Ecliptic J2000
elon2000 elat2000 Ecliptic J2000
elon1950 elat1950 Ecliptic B1950
glon glat Galactic
l b Galactic
lon lat **
starlon starlat **

* The first two examples default to J2000, unless an Equinox column is included.

* * The last two examples default to Equatorial J2000 unless extra Equinox ("equinox" or "epoch") and Coordinate-system ("coord sys" or "sys" or "csys") columns are explicitly given.

If no complete set of coordinate columns is found, the table is checked for a variety of possible columns that might contain coordinate strings or object names: "object," "source," "objname," "objstr," "locstr," "location," "star," "galaxy," or "name." The next step is to parse the coordinates or look up the object by name.

Coordinates can be decimal degrees or sexagesimal in various forms, for example:

LongitudeLatitude
3h23m45.6s -37d15m41s
3 23 45.6 -37 15 41
3h 23m 45.6s -37d 15m 41s
3 23' 45.6" -37 15' 41"
50d 56m 24s -37d 15m 41s
50.94000 -37.2614