| Official name | IUS R/B(1) |
| Alternative name | IUS first stage (Titan IVB IUS) |
| Cospar ID | 2000-024C |
| Norad ID | 26358 |
| Launch date | 2000-05-08 |
| Launch site | AFETR |
| Launch vehicle | Titan-4(02)B IUS |
| RCS size | LARGE |
| Decay date | ON ORBIT |
| Period (min) | 592.62 |
| Inclination (deg) | 28.65 |
| Perigee (km) | 371 |
| Apogee (km) | 33615 |
| Eccentricity | 0.978167480727358 |
| Mean motion (revs. per day) | 2.42988761769768 |
| Semi-Major axis (km) | 23371.135 |
| Raan (deg) | 135.1484 |
| Arg of perigee (deg) | 61.3339 |
| Shape | Cyl |
| Mass (kg) | 1164 |
| Diameter (m) | 2.32 |
| Height (m) | 3.5 |
