| Official name | THOR BURNER 2 R/B |
| Alternative name | Star 26B (Thor-Burner IIA) |
| Cospar ID | 1971-087B |
| Norad ID | 5556 |
| Launch date | 1971-10-14 |
| Launch site | AFWTR |
| Launch vehicle | Thor-DSV2U Burner-2A |
| RCS size | LARGE |
| Decay date | ON ORBIT |
| Period (min) | 101.13 |
| Inclination (deg) | 99.05 |
| Perigee (km) | 768 |
| Apogee (km) | 857 |
| Eccentricity | 0.0547692307692308 |
| Mean motion (revs. per day) | 14.2390981904479 |
| Semi-Major axis (km) | 7190.635 |
| Raan (deg) | 96.8687 |
| Arg of perigee (deg) | 190.4055 |
| Shape | Sphere + 1 Nozzle |
| Mass (kg) | 115 |
| Diameter (m) | 0.4 |
