Tansei
Tansei was a series of small Japanese satellites designed to test the performance of new ISAS (Institute of Space and Astronautical Science) launch vehicles. All were launched from Kagoshima.
| spacecraft | launch date | launch vehicle | orbit | mass (kg) |
| Tansei | Feb 16, 1971 | M-4S | 990 × 1,110 × 30° | 63 |
| Tansei-2 | Feb 16, 1974 | M-3C | 290 × 3,240 × 31° | 56 |
| Tansei-3 | Feb 19, 1977 | M-3H | 790 × 3,810 × 31° | 129 |
| Tansei-4 | Feb 17, 1980 | M-3S | 521 × 606 × 39° | 185 |
