Norad ID: 47927
| Spacetrack Directory Name | TSURU |
| Orbit launches |
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| Deorbitation date |
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| Days in orbit | 8628 |
| Country/organisation of origin | Japonia (JPN) |
| Starting point | TYMSC (Baikonur Cosmodrome, Kazakhstan) |
| WWW | Here |
| Categories | |
| Perigee | 393 km |
| Apogee | 395 km |
1. APRS digipeater 2. Store-and-Forward 3. Total Ionization Dosage 4. Hentenna mission 5. Active attitude control 6. Perovskite solar cell 7. Camera mission 8. On-board Image classification The primary mission of BIRDS-4 CubeSat constellation is to provide digital message relay service to the amateur radio community by means of an APRS (Automatic Packet Reporting System) digipeater onboard.