teikyosat-4 infomation
External view of TeikyoSat-4
This image shows the FM of TeikyoSat-4 (nicknamed "Ooruri"). FM is an abbreviation for flight model, which refers to "The model that actually flies in orbit.
Mission of TeikyoSat-4
The mission of this satellite is to observe the effects of microgravity on a cellular slime mold called the "Dictyostelium discoideum" and to send the data down to the ground.
Inside this black structure is a "mission module" to maintain atmospheric pressure and an environment conducive to the survival of slime molds in space to observe the Dictyostelium discoideum fungus.
Development Structure：(https://www.teikyo-u.ac.jp/affiliate/education/teikyosat/summary)
Spacecraft Specifications：
| Name | TeikyoSat-4(Ooruri) |
| Size | 455mm×455mm×450mm |
| Mass | 52kg |
| Orbit | Sun-Synchronous Orbit About altitude : 560㎞ / Inclination : 97.6 deg / Period : 96min |
| Mission | 1.Establishment of Bus System able to Multipurpose Space Environment Utilization Satellite. |
| 2.Demonstration on High Frequency Communication of amateur radio bands on the orbit. | |
| 3.Demonstration on Life Science Field Mission in an orbit. |
Call Sign：
| Satellite Station TeikyoSat-4（Ooruri） | JS1YHH |
| Ground Station Teikyo University Ground Station | JS1YHI |
TeikyoSat-4 Communication Specification:
TeikyoSat-4 uses the amateur radio band.
| Frequency Band | Uplink | Downlink |
| VHF/UHF | 145MHz Band | 437.45MHz |
| UHF/SHF | 1200MHz Band | 5831.00MHz |
| Type | Modulation | Protocol |
| Beacon | CW | N/A |
| FM Packet(VHF/UHF) | 1k2-AFSK/9k6-GMSK/SSTV | AX.25/Scottie1 |
| FM(SHF) | 115k2-2FSK | ※ |
※Following the technology of Fukuoka Institute of Technology FITSAT-1 mission.
Tanaka et
al., "Microsatellite
FITSAT-1" Niwaka "and wireless system", RF World, No. 22 , CQ Publishing, April
2013.
Tanaka et
al . , "Development
and operation of microsatellite FITSAT-1 (Niwaka)" , UNISEC Takumi Journal , Vol. 4, No. 1, pp.
1-25, 2013.
TLM_Format (PDF) （Getting Ready）
TLE(2021/12/05/17:59 JST)：
https://celestrak.com/NORAD/elements/