Launch data:
| Designation | 10423 / 77102B |
| Launch date | 22 Oct 1977 |
| Launch site | CC, LC-17B |
| Launch vehicle | Delta-2914 (#135) |
| Mission | Scientific: magnetosphere study |
| Earth orbit on: | |
| Perigee/Apogee | 406/137765 km |
| Inclination | 13.5° |
| Period | 3438.5 min |
ISEE 2 |
Europe / ESA |
Spacecraft n°: |
ESA spacecraft n°: 11 |
Launch data:
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| Decay | 26 Sep 1987 |