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Campaign: Parker Solar Probe 26^th Perihelion

December 11 - 13, 2025

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.

Campaign Target Information

Visit the campaign target archive page.

Support

• Advanced Heliophysics PSP page - Regularly posts new modeling results and observational advice for PSP, Solar Orbiter, 1au and ground-based observatories.
• Various ground-based and space-based observatories.

Other Parker Solar Probe campaigns

• PSP 4th Perihelion (Jan 15 - Feb 11, 2020)
• PSP 7th Perihelion (Jan 10 - 20, 2021)
• PSP 8th Perihelion (Apr 28 - May 7, 2021)
• PSP 11th Perihelion (Feb 18 - 28, 2022)
• PSP 15th Perihelion (Mar 13 - 21, 2023)
• PSP 18th Perihelion (Dec 26 – 28, 2023)
• PSP 19th Perihelion (Mar 29 – Apr 1, 2024)
• PSP 20th Perihelion (Jun 28 – Jul 2, 2024)
• PSP 22nd Perihelion (Dec 21 - 24, 2024)
• PSP 23rd Perihelion (Mar 21 - 25, 2025)
• PSP 24th Perihelion (Jun 17 - 22, 2025)
• PSP 25th Perihelion (Sep 12 - 18, 2025)
• PSP 27th Perihelion (Mar 10 - 13, 2026)
• PSP 28th Perihelion (Jun 7 - 11, 2026)