Mission Atlas
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Mission record

STEREO

Also known as Solar TErrestrial RElations Observatory

NASA · Launched

Explore trajectory

Active · Active

NASA's active STEREO mission uses the STEREO-A and STEREO-B spacecraft to study the Sun, solar wind, and space weather from multiple viewpoints.

Destinations
Launch vehicle
Delta II 7925-10L
Launch site
Cape Canaveral, Launch Complex 17B
Countries
United States
Mission types
Heliophysics

Chronology

Mission timeline

  1. Launch

    STEREO launched

    The flight-dynamics paper gives an as-flown launch epoch of 00:52:00.339 UT. This event uses whole-second display precision; the Horizons header time of 01:53 is inconsistent with this paper and the GSFC mission launch page.

    Earth

Mission architecture

Vehicles

  • STEREO-A · Spacecraft

    Destinations: Sun

  • STEREO-B · Spacecraft

    Destinations: Sun

Trajectory record

Time-dependent navigation trajectory

Source states place the model at the selected time. Reconstructed flight, estimates, predictions and historical mission plans are identified by interval; gaps remain visible.

J2000 · Sun-centered display · positions interpolated between source states

Coverage: October 26, 2006 to December 17, 2026

Source records and sampling assumptions are retained with the repository data. Model attitude and surface appearance are illustrative.

  • STEREO-A: Predicted · October 26, 2006 to December 17, 2026
  • STEREO-B: Predicted · October 26, 2006 to October 25, 2024

Provenance

Sources

Each source is listed once and labeled with the mission, event, trajectory, or destination/body context it supports.

Data verified through October 11, 2026