Launch data:
| Designation | 21577 / 91050D |
| Launch date | 17 Jul 1991 |
| Launch site | Ko, ELA-2 |
| Launch vehicle | Ariane-40 (V44) |
| Mission | Civil Scientific:
animal migration studies for Berlin's university Technology research on attitude control |
| LEO/Sun- synchronous Earth orbit: | |
| Perigee / Apogee | 760 x 768 km |
| Eccentricity | 5.61E-04 |
| Inclination | 98.19 deg |
| Period | 100.12 min |
