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Mission Profile
| Name (pre-launch in parentheses) | TANSEI-3 (MS-T3) | |
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| International Designation Code | 1977-012A | |
| Objectives | Performance test of M-3H rocket, and demonstration of new technologies, such as magnetic-field-aligned, attitude-stabilization method and spin-axis control by cold gas jet, required for the next and subsequent scientific satellites. | |
| Launch | Date | 14:15, February 19, 1977 (JST) |
| Location | Kagoshima Space Center (Uchinoura) | |
| Launch Vehicle | ||
| Configuration | Weight | 129 kg |
| Shape | Near circular cylinder, 931.2mm long from face to face and 800mm high
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| Orbit | Altitude | Perigee 790 km, Apogee 3,810 km |
| Inclination | 66° | |
| Type of Orbit | Elliptical | |
| Period | 134 min | |
| Scientific Instruments |
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| End of Operation | March 8, 1977 | |
| Operation | The plan was to conduct a cold-gas jet experiment in the first week and a magnetic field-aligned stabilization experiment in the second week. A shut-off valve malfunction, however, caused the cancellation of the gas-jet experiment, and instead, the magnetic field-aligned attitude stabilization experiment was conducted. Due to operations performed from the 32nd though 39th revolutions, the maximum angle of the satellite-reference axis to the geomagnetic field line went from 6° to 18° during the 41st revolution. Thus, the magnetic field-aligned attitude stabilization system was demonstrated to function properly. |
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