TTÜ100 (Hämarik) is a 1U-CubeSat training satellite that was developed at Tallinn University of Technology.
| Name of Satellite | TTU100 (Hämarik) |
| Purpose | Earth Observation |
| Contractor | Tallinn University of Technology |
| Country of Contractor | Estonia |
| Launch Mass (kg.) | 4 |
| Class of Orbit | LEO |
| Perigee (km) | 534 |
| Date of Launch | 02.09.2020 |
| Launch Site | Guiana Space Center |
| Launch Vehicle | Vega |
| COSPAR Number | 2020-061AS |
| NORAD Number | 46312 |
TTÜ100 Earth Observation Satellite mission goal is to test high-speed communication and X-band Earth observation cameras. It will be able to perform remote sensing in the visible and infrared range of the electromagnetic spectrum.
