The two STEREO spacecraft, A (red path) and B (yellow path), are launched from the Earth into a highly eccentric orbit with an apogee that reaches the orbit of the Moon. Once in this orbit, the trajectories are adjusted so they can receive gravity-assists from the Moon. The gravity assist will send them both into heliocentric orbits, one spacecraft ahead of the Earth and the other behind the Earth.
This trajectory was generated using a spacecraft ephemeris generated shortly after launch.
Data Used: STEREO SSCweb
October 25, 2006 - April 27, 2007
Note: While we identify the data sets used in these visualizations, we do not store any further details nor the data sets themselves on our site.