Search the Archive:

The Coordinate/Object field combines in a single interface the name resolution look-up services of NED and SIMBAD as well as coordinate transformation services.

The same input field is used for either name resolution or coordinate input and the service dynamically determines its content. IRSA accepts both decimal degree and sexagesimal inputs. If the input field contains a string which can be interpreted as a coordinate representation, it is used as such. If not, the string is sent first to NED, then to SIMBAD to attempt name resolution. The range of name formats acceptable is set by those projects.

Coordinates entered into the interface allow for all information to be contained in a single string. The parser is very forgiving, so all of the following are valid (and give the results you would expect). For coordinate inputs, Equatorial J2000 is assumed unless specified otherwise.

• 0042443-411608
• 00:42:44.3 -41:16:08
• 00h42m44.3s -41d16m08s
• 00 42 44.3 -41 16 08
• 34.5565 54.2321 gal
• 34. 54. ecl
• M83
• 344.489624 40.248115 Equ B1950
• Barnard's Star

This same entry field appears in many other IRSA services where names or coordinates are required.