Encounter 12 Summary

Encounter 12 (2022-05-27 - 2022-06-07, with limited additional data 2022-05-08 - 2022-06-11)

This animation shows all WISPR full-field observations from the twelfth PSP Mission Encounter (05-27-2022 - 06-07-2022), processed via the LW Algorithm developed by Dr. Guillermo Stenborg (JHUAPL) and detailed in Appendix A of Howard et al. 2022 (ApJ, 936, id.43. DOI 10.3847/1538-4357/ac7ff5). We have superimposed a grid showing heliocentric longitude and latitude, and a scale representation of the size and location of the Sun in the observations. The velocity and distance metrics displayed on the movies correspond respectively to the spacecraft's heliocentric velocity in kilometers per second, and its distance from the Sun's center in units of solar radii (where 1 solar radius = 695,700km). The timespan of this composite movie covers only the nominal science window when the spacecraft was within 0.25 au.
You can also download this movie directly as a 309MB mp4 file. It is also available in the same format using the L3 images, which can be downloaded here as a 62MB mp4 file.

[Credit: NASA/NRL/JHUAPL. Movie processed/compiled by Guillermo Stenborg (JHUAPL) and Brendan Gallagher (NRL).]

Solar Features

2022/05/28 08:00 CME
2022/05/28 17:00 CME
2022/05/29 07:00 Streamer Blob
2022/05/29 16:30 Streamer Blob
2022/05/31 09:30 CME
2022/06/01 15:00 Streamer Blob
2022/06/02 06:00 CME
2022/06/04 15:00 Streamer Blob
2022/06/05 17:00 CME

Miscellaneous Notes:

  • Because of numerous spacecraft rolls between 0.5 and 0.25 au, images have been processed to L3 at both nominal (0°) roll and 20° roll. In past orbits only nominal roll images were processed to L3.


A couple of known SOHO-discovered Kreutz sungrazers were visible, as well as the following.

  • 2022-05-16: 45P/Honda
  • 2022-05-29: Kreutz sungrazer "PSP001" - first comet discovery from PSP/WISPR! Found by Peter Berrett.


The following planets were visible in the encounter, all moving left-to-right. The following dates refer to their visibility only in the WISPR-Inner camera, and assumes they transit the outer camera too:

  • Earth: 2022-06-01 ~03UT
  • Mercury: 2022-06-01 ~11UT
  • Saturn: 2022-06-02 ~01UT
  • Mars: 2022-06-02 ~02UT
  • Venus: 2022-06-02 ~07UT
  • Jupiter: 2022-06-02 ~12UT

Encounter 12 Data Products

Released data for all encounters can be obtained from our WISPR Data Page. Descriptions of other encounters can be found on the Encounter Summaries Page.