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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 Ascension | Declination | Result |
|---|---|---|
| ra | dec | Equatorial |
| 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:
| Longitude | Latitude |
|---|---|
| 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 |