| Item | Value |
|---|---|
| Size | 1U CubeSat |
| Bus | BIRDS-derived bus |
| Callsign | JS1YPT |
| Payload | Camera / gyro / current sensors / CIGS solar cells / status LEDs |
| Camera controller | Raspberry Pi Zero 2 W, field of view 63° × 51° |
| Gyro MCU | Arduino R4 compatible board |
| APRS TNC | TinyTrak4 |
| CIGS cells | Provided by Idemitsu Kosan, +Z panel |
| Status LEDs | 4 on the −Z panel |
| Development start | April 2023 |
| Handover | 2025-02-28 |
| Launch | 2025-09-16, Falcon 9 / Cygnus NG-23 |
| Deployment | 2025-10-10, from the ISS |
| Transmissions stopped | 2026-02-27 |
| Re-entry | 2026-03-03 |
| NORAD ID | 65942 |
Bus configuration
| Board | Description |
|---|---|
| OBC | Micro Orbiter 1 derived board |
| FAB | BIRDS-5 derived board |
| MB | Mission board |
| RAB | Carries the gyro, gyro MCU and camera |
| BPB | Backplane, carries the current sensors |
| +Z panel | Carries the CIGS solar cells |
| −Z panel | Carries the status LEDs |
| Main structure, side panels | Common design with YOMOGI |
Environmental tests
| Test | Result |
|---|---|
| Vibration | First resonance above 30 Hz on each axis, shift within 10% before and after |
| Thermal vacuum | Functional tests of all missions |
| Antenna deployment, 20 times | Deployment rate 100%, within 20 s |
| Hot antenna deployment | 24 s |
| Cold antenna deployment | −35 ℃ |
| Deployment force | 0.56 kgf, creep test load 1.96 kgf |
| Deployment and RF Test | Deployed at 31 min 22 s, CW transmission at 31 min 15 s |
| 7-day battery measurement | Voltage change 0.11 V, 2.61% |
| Permanent magnet | +Z face S pole, −Z face N pole |