Tyvak-0173? (SIRION-3?)

Tyvak-0173? (SIRION-3?)
Name Tyvak-0173? (SIRION-3?)
Type CubeSat
Units or mass 6U
Organisation EchoStar
Institution Company
Entity Commercial
Nation US
Manufacturer AIVT by Tyvak
Oneliner Two tiny S-band satellites to jumpstart a low-Earth-orbit constellation using spectrum gained through its acquisition of Helios Wire. 
Results [Performed 110 km in altitude orbit raise from TLEs as reported by Jonathan McDowell.](https://twitter.com/planet4589/status/1417672513451175937?s=20) [The orbit raising required about 65 meters per second.](https://spacenews.com/stellar-exploration-propels-echostar-nanosatellite/)
Sources [1] [2] [3] [4] [5] [6] [7] [8]

Related Spacecraft

Name Status Launch Orbit
Tyvak-0172 (SIRION-1) Semi-operational? (Propulsion failed and did not reach nominal operational altitude, but otherwise likely operational) 2020-08-30 97.9 deg, 600 km
Tyvak-0171 (SIRION-2?) Semi-operational? (Propulsion failed and did not reach nominal operational altitude, but otherwise likely operational) 2020-09-02 530 km, 97.5 deg, SSO
Tyvak-0173 (SIRION-3, EG 3) Operational (News on 2021-08-10 about propulsion) 2021-06-30 525 km, 97.5 deg

Last modified: 2021-08-10
Detailed Tyvak-0173? (SIRION-3?) entry in the Database
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