The GEO catalog lists objects in or near geosynchronous orbit.

Objects are entered in the GEO catalog if at any time in their careers their orbital period is in the near-geosynchronous ring (NGEO) between 23 hours (1380 min) and 25 hours (1500 min).

The file gives latest available orbital information. Fields are:

- (1) NORAD number
- (2) COSPAR designation
- (3) Name
- (4) Alternate (e.g. prelaunch) name
- (5) Julian date epoch of orbital data
- (6) Gregorian date and time (UTC) epoch of orbital data
- (7) GEO status code
- (8) Orbital period in min
- (9) Perigee x Apogee in km x inclination in deg
- (10) Approximate longitude at epoch + drift rate, direction in degrees per day
- (11) Probable end-of-life date (An asterisk (*) implies still active)
Explanation of GEO status codes: (note that this is the current orbit; object may be in the list because its orbit code was one of the GEO/ ones for some earlier phase of its mission)

- GEO/S: Stationary - period 23h56m+/-0.5m, so drift rate < 0.12 deg/day; inc less than 2.0 deg;
eccentricity less than 0.01
- GEO/SI: Inclined - as GEO/S but inclination between 2 and 20 deg
or eccentricity between 0.01 and 0.05.
- GEO/ST: Synchronous - period 23h56m+/-0.5m, so drift rate < 0.12deg/day;
higher eccentricity or inclination than GEO/I
- GEO/DR: Drift - period 23 hours to 25 hours, inc < 2 deg, ecc < 0.05,
- GEO/ID: Inclined Drift - period 23 hours to 25 hours, inc < 20 deg, ecc < 0.05,
- GEO/NS: Near-synch: period 23-25 hours, inc > 2 deg or ecc > 0.05
- MEO - Medium Earth Orbit, period 2 to 23 hours, ecc < 0.5
- HEO - Highly Elliptical - period 4 to 23 hours, ecc > 0.5
- GTO - Geo Transfer - period 10 to 12.5 hours, ecc 0.50 to 0.77
- DSO - Deep Space: period more than 25 hours, ecc < 0.5
- DHEO - Deep Eccentric - period more than 25 hours, ecc > 0.5

Geostationary Orbit Catalog: Current orbits

- GEO/S: Stationary - period 23h56m+/-0.5m, so drift rate < 0.12 deg/day; inc less than 2.0 deg;
eccentricity less than 0.01