Localization

Localization of transient

View the source on GitHub

Properties

* = required

Name	Type	Description
ra	number	ICRS right ascension [deg], utilizes the J2000 epoch and an equatorial coordinate system
dec	number	ICRS declination [deg], utilizes the J2000 epoch and an equatorial coordinate system
ra_dec_error
containment_probability	number	Containment probability [dimensionless, 0-1]; if absent, default is 0.9
systematic_included	boolean	Contains true when the systematic error is included and false when the systematic error is not included
instrument_phi	number	Instrument phi [deg]
instrument_theta	number	Instrument theta [deg]
instrument_semimajor_angle	number	Position angle of semi-major axis in instrument coordinates [deg]
healpix_url	string	URL of HEALPix localization probability file
healpix_file	string	Base 64 encoded content of a FITS file

Example

{
  "$schema": "https://gcn.nasa.gov/schema/v4.2.0/gcn/notices/core/Localization.schema.json",
  "ra": 120,
  "dec": 45,
  "ra_dec_error": [
    0.5,
    0.8,
    0
  ],
  "containment_probability": 0.95,
  "systematic_included": true,
  "instrument_phi": 90,
  "instrument_theta": 45,
  "instrument_semimajor_angle": 50,
  "healpix_url": "http://example.com/localization.fits",
  "healpix_file": "H4sIAAAAAAAAC......."
}