TANSEI-4
| Launched | 16 February 1980 |
| Flight ended | 11 May 1983 |
| Status | Decayed |
| Launch site | Uchinoura Space Center (Fomerly Kagoshima Space Center-University of Tokyo, Japan) |
| Owner | Japan |
| NORAD ID | 11706 |
| COSPAR ID | 1980-015A |
| Alternative names |
MS-T4 |
| Observing |