SpaceTentative

Electron: TSIS-2

expected Q1 2027

expected Q1 2027

—hype

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    Photo: NASA Kennedy Space Center / Rocket Lab · Public domain · via Wikimedia Commons

    About this moment

    Electron: TSIS-2 is expected Q1 2027. The exact day has not been announced yet.

    Rocket Lab is preparing to launch TSIS-2 on an Electron from Rocket Lab Launch Complex 1, Mahia Peninsula, New Zealand. The Total and Spectral Solar Irradiance Sensor 2 (TSIS-2) is a satellite designed by NASA to measure the Sun's energy input to Earth. TSIS-2 comprises two instruments, the Total Irradiance Monitor (TIM), and the spectral Irradiance Monitor (SIM). TIM measures total brightness and SIM measures spectral irradiance over a wavelength range that includes 96% of the energy in the solar spectrum. Both instruments are similar to those used for the TSIS-1 mission onboard the International Space Station. Launch is expected in Q1 2027 and no firm date has been announced yet.

    This listing uses an approximate period. An exact day has not been confirmed.

    Where
    New ZealandRocket Lab Launch Complex 1, Mahia Peninsula, New Zealand

    Date source

    Launch Library 2

    Source last checked Oct 19, 2026

    Sources and attributions

    This is a public listing. If the date or details look wrong, tell us.

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