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Important notice about the STEREO redirects

New procedure for updating SolarSoft

Read-only problem while updating SolarSoft with WGET

Important notice about STEREO Behind

Solar Orbiter perihelion passage, 19 August 2026

This figure shows the orbital configuration of STEREO Ahead (red) during the perihelion passage of Solar Orbiter (orange) centered on 19 August 2026. The positions of Solar Orbiter are plotted at one day intervals from five days before perihelion to five days after. The sense of motion is counter-clockwise. During this short period, the motions of STEREO and the planets are negligible in the Heliocentric Earth Ecliptic coordinate system which follows Earth's orbital period.

Orbital plot

Note that the projected location of STEREO Behind is also plotted. However, that spacecraft is not currently operational. Follow this link for more information.

Back to Solar Orbiter support page.

The following figure shows the progression of Solar Orbiter through the fields of view of the STEREO/SECCHI telescopes. The images are simulated, based on data from earlier in the STEREO mission.



Back to Solar Orbiter support page.

Last Revised: Monday, 18-May-2020 18:55:10 GMT
Responsible NASA Official: [email address: Therese.A.Kucera<at>nasa<dot>gov]
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