Encounter 1 Summary

Encounter 1, 2018-10-31 - 2018-11-11


This animation shows all L3 WISPR full-field observations from the first PSP Mission Encounter (Nov 01 - 10, 2018). We have superimposed a grid showing helioprojective longitude and latitude, and a scale representation of the size and location of the Sun in the observations using the SDO/HMI Carrington map for this time period. 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 "FOV Range" label provides the plane-of-sky distance limits of the inner and outermost edges of the fields of view, in units of solar radii. The horizontal blue line indicates the orbital plane of PSP. The timespan of this composite movie covers only the nominal science window when the spacecraft was within 0.25 au; a limited amount of data outside of this range may be available at the below links.
You can download this movie directly as a 23MB mp4 file. It is also available as a 99MB mp4 file, 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).

[Credit: NASA/NRL/JHUAPL. Movie processed/compiled by Guillermo Stenborg (JHUAPL) and Brendan Gallagher (NRL). SDO inset courtesy of NASA/SDO and the AIA, EVE, and HMI science teams.]


Solar Features

2018/11/01 11:00 - CME (Hess et al 2020, Rouillard et al 2020)
2018/11/05 05:00 - Steamer Blob (Wood et al 2020)

Comets and planets

No comets were known to be observed during this encounter. The following planets can be seen entering the WISPR Inner camera:

  • Jupiter, beginning approx. 2018-11-01 10:30UT
  • Saturn, beginning approx. 2018-11-04 07:29UT
  • Mercury, beginning approx. 2018-11-06 22:21UT
  • Mars, beginning approx. 2018-11-09 19:44UT

Operations summary

There were no spacecraft or instrument operations that affected the data during this encounter.

Miscellaneous notes


Encounter 1 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.

NASA Press Release