| Official name | TITAN 3C TRANSTAGE R/B |
| Alternative name | Transtage 39 (Titan IIIC) |
| Cospar ID | 1981-107C |
| Norad ID | 12932 |
| Launch date | 1981-10-31 |
| Launch site | AFETR |
| RCS size | UNKNOWN |
| Decay date | ON ORBIT |
| Period (min) | 1445.85 |
| Inclination (deg) | 5.17 |
| Perigee (km) | 31662 |
| Apogee (km) | 40293 |
| Eccentricity | 0.119949968730457 |
| Mean motion (revs. per day) | 0.995953937130408 |
| Semi-Major axis (km) | 42355.635 |
| Raan (deg) | 2.3052 |
| Arg of perigee (deg) | 113.5802 |
| Shape | Cyl + 2 Nozzle |
| Mass (kg) | 1486.62 |
| Diameter (m) | 3.1 |
| Height (m) | 4.6 |
| Span (m^2) | 4.6 |
