Parker Solar Probe’s Perihelion 26 occurred on December 13, 2025, at 07:11 UTC. As with the previous encounters since Encounter 22, the perihelion occurred at the mission’s minimum heliocentric distance of 9.86 Rs, or 0.046 AU. We expected a rapid crossing of the PSP footpoints across the solar visible solar disk around December 11 with the perihelion happening on the disk close to the western limb and in Parker spiral alignment with Earth and Solar Orbiter. Daily updates were posted between December 11 and December 13, inclusive.
If you have observational results to share, please contact us at whpi_help@hao.ucar.edu.
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