TSIS-1
Total and Spectral Solar Irradiance Sensor-1 (TSIS-1) observes the Sun’s energy input to Earth from the International Space Station. Its Total Irradiance Monitor measures broadband solar irradiance, while the Spectral Irradiance Monitor resolves how that energy varies across ultraviolet, visible and infrared wavelengths. The LASP-led NASA mission continues the SORCE and TCTE irradiance records for studies of solar forcing and Earth’s climate and atmosphere. Released products distinguish irradiance normalized to one astronomical unit from values at the actual Earth–Sun distance and include quality and uncertainty information needed for long-term comparisons.
Schedule, status, and mission updates. Time-based alerts will start when a time is available.
Identity
- Aliases
- Total and Spectral solar Irradiance Sensor-1Total and Spectral Solar Irradiance SensorTSIS-1
- Name
- TSIS-1
- Status
- active
Details
- Astronauts
- -
- Description
- Total and Spectral Solar Irradiance Sensor-1 (TSIS-1) observes the Sun’s energy input to Earth from the International Space Station. Its Total Irradiance Monitor measures broadband solar irradiance, while the Spectral Irradiance Monitor resolves how that energy varies across ultraviolet, visible and infrared wavelengths. The LASP-led NASA mission continues the SORCE and TCTE irradiance records for studies of solar forcing and Earth’s climate and atmosphere. Released products distinguish irradiance normalized to one astronomical unit from values at the actual Earth–Sun distance and include quality and uncertainty information needed for long-term comparisons.
- Destination
- International Space Station low Earth orbit at approximately 400 km altitude (51.6° inclination)
- Outcome
- Affixed to the International Space Station in December 2017, TSIS-1 continues the long-running solar-irradiance record with improved stability and accuracy for atmospheric and climate research.
- Programs
- Start Date
- 2017-12-15
- Vehicle Families
Links
Assets & Meta
- Creation Time
- August 15, 2026 at 07:42:21 UTC
- Updated Time
- October 29, 2026 at 15:45:37 UTC
Other
- Affiliations
- Space Stations
- Vehicles