T-minus
568days
11hrs
08min
48sec
Trajectory & orbital insertion
Ascent path is a representation — true ascent telemetry isn’t public.
Provider
SpaceX
Provider type
Commercial
Orbit
SSO
Mission type
Astrophysics
Launch site
United States of America
Date
Fri, 31 Dec 2027 00:00:00 GMT
Orbital launch #
#7567 ever
Mission
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.