Important notice about the
New procedure for updating SolarSoft
Read-only problem while updating SolarSoft with WGET
Important notice about STEREO Behind
Parker Solar Probe perihelion, 28 September 2023
This figure shows the orbital configuration of STEREO Ahead (red) during
the perihelion passage of Parker Solar Probe (orange) centered on 28
September 2023. The positions of Parker Solar Probe are plotted at one
day intervals during the period when it is within 0.25 AU of the Sun. 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. STEREO Ahead is
in quadrature at closest approach.
Note that the projected location of STEREO Behind is also plotted.
However, that spacecraft is not currently operational. Follow
for more information.
Also shown are the projected positions of Solar Orbiter (purple) based
on a February 2020 launch date.
The following figures show the progression of Parker Solar Probe
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 PSP support page.
Last Revised: Tuesday, 12-Feb-2019 19:33:10 UTC
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