| Name of Satellite, Alternate Names | Chandra X-Ray Observatory (CXO) |
| Country of Operator/Owner | USA |
| Operator/Owner | NASA Goddard Space Flight Center |
| Users | Government |
| Purpose | Astrophysics |
| Class of Orbit | Elliptical |
| Type of Orbit | Deep Highly Eccentric |
| Longitude of GEO (degrees) | 0 |
| Perigee (km) | 9999 |
| Apogee (km) | 138825 |
| Eccentricity | 0.797368225594811 |
| Inclination (degrees) | 28.5 |
| Period (minutes) | 3808.92 |
| Launch Mass (kg.) | 4742 |
| Dry Mass (kg.) | |
| Power (watts) | 2500 |
| Date of Launch | 23-07-1999 |
| Expected Lifetime | 5 yrs. |
| Contractor | TRW Space and Electronics |
| Country of Contractor | USA |
| Launch Site | Cape Canaveral |
| Launch Vehicle | Space Shuttle (STS 93) |
| COSPAR Number | 1999-040B |
| NORAD Number | 25867 |
| Comments | X-ray astronomy. |