# Electron | TSIS-2: launch

> Electron by Rocket Lab from Rocket Lab Launch Complex 1, Mahia Peninsula, New Zealand. Scheduled: NET Q1 2027.

- Canonical page: https://spacenexus.us/launch/cmuf4i8rg06ufqxt1senopv9z
- This Markdown version: https://spacenexus.us/launch/cmuf4i8rg06ufqxt1senopv9z.md
- Data as of: 2026-11-12 13:00 UTC (last Launch Library 2 sync)
- How the numbers are made: https://spacenexus.us/launch-slips/method

## Facts

- Launch: Electron | TSIS-2
- Mission: TSIS-2
- Provider: Rocket Lab
- Rocket: Electron
- Pad: Rocket Lab Launch Complex 1, Mahia Peninsula, New Zealand
- Country of the launch site: NZL
- Date (UTC): NET Q1 2027 (2027-03-31T00:00:00.000Z)
- Status: tbd (Launch Library 2: TBD)
- Real slips recorded: 0; other date moves (placeholder rolls, firmings), not slips: 0

## Mission description

Quoted from Launch Library 2: 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.

## Date history

No date change recorded for this launch since our ledger began.

## Sources

- [Launch Library 2 by The Space Devs](https://thespacedevs.com): launch names, providers, rockets, pads, dates and status
- [SpaceNexus Launch Ledger (our own record of every date change)](https://spacenexus.us/launch-slips/method)
- [Mission information (link from Launch Library 2)](https://www.spacelaunchnow.me/launch/electron-tsis-2)

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- Launch facts (names, providers, rockets, pads, dates, status): Launch Library 2 by The Space Devs (thespacedevs.com), credited and not relicensed by SpaceNexus.
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