| Official name | ATLAS 2 CENTAUR R/B |
| Alternative name | CENTAUR (Atlas II) |
| Cospar ID | 1991-083B |
| Norad ID | 21804 |
| Launch date | 1991-12-07 |
| Launch site | AFETR |
| Launch vehicle | Atlas-2 |
| RCS size | LARGE |
| Decay date | ON ORBIT |
| Period (min) | 753.27 |
| Inclination (deg) | 17.85 |
| Perigee (km) | 848 |
| Apogee (km) | 41243 |
| Eccentricity | 0.959706350526241 |
| Mean motion (revs. per day) | 1.91166513998965 |
| Semi-Major axis (km) | 27423.635 |
| Raan (deg) | 27.0667 |
| Arg of perigee (deg) | 78.3378 |
| Shape | Cyl |
| Mass (kg) | 2095 |
| Diameter (m) | 3.05 |
| Height (m) | 10.1 |
| Span (m^2) | 10.1 |
