TSIS-2
NextLaunch Autosequence BeginsT-02:00
The 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.
Mission timeline
Launch Autosequence Begins
Electron enters its automated terminal countdown
- Launch Autosequence BeginsT-02:0011:58 PM UTC
- Rutherford IgnitionT-00:0211:59 PM UTC
Where it leaves Earth
Launch site
Ground vector
Unknown Pad
Rocket Lab Launch Complex 1, Mahia Peninsula, New Zealand
- Latitude
- 39.261°S
- Longitude
- 177.866°E
Can I see this?
Distance and a plain visibility call from a place you choose. Trajectory is not modeled — night launches travel farther across the sky than daylight ones.
Save a viewing place to judge this pad from where you stand.
Range weather
Launch commit criteria
Clear — tracking no weather issues at this time.
- Primary concern
- No weather issues
- Rule count
- 0
- Temperature
- Not reported
- Surface wind
- Not reported
12:00 AM UTC – 12:00 AM UTC
Vehicle & provider
Schedule history
No meaningful launch-time or status changes recorded.