BackForward Satellite: TSIS-2 

Satellite details
Acronym TSIS-2
Full name Total and Spectral Solar Irradiance Sensor - 2
WIGOS Station Identifier ---
Satellite Description
  • 2nd flight unit of the TSIS instrument to provide continuity to ACRIM and SORCE programmes.
  • TSIS-2 is on a dedicated satellite unlike TSIS-1 on the ISS.
Mass at launch Dry mass
Data access link no link provided
Data access information
  • TBD
Orbit Drifting orbit Altitude 407 km
Inclination 51.6 °


Space agency NASA
Status Planned
Details on Status
(as available)
Launch ≥2025 EOL ≥2028
Last update: 2024-06-10
Associated satellite programme and related satellites

Note: red tag: no longer operational , green tag: operational , blue tag : future

Satellite Payload

All known Instruments flying on TSIS-2

Acronym Full name
TSIS Total and Spectral Solar Irradiance Sensor
Show instrument status and calibration