Voting Round :

PJ8 Encounter

CLOSED : 2017-08-24 17:00:00
Perijove on : 2017-09-01 21:50 UT
About This Round
Juno's orbit around Jupiter is evolving. This is the last full opportunity to image Jupiter from 5 days out to 5 days after perijove. We will want to take advantage of this last chance for continuity at every latitude. That said, we do have a large data volume available for the perijove pass, so we will probably be able to capture most of the Points of Interest you vote for. We have also set aside a small number of bits for a nice image of Io.
Perijove Predict Map
About Perijove Predict Maps

Every perijove pass we have the challenge of predicting where Points of Interest will be as the different zones of the planet have different wind velocities. This map shows our effort to rotate the latitudinal zones with their different wind speeds to predict what will be under the Juno groundtrack.

Winner Selection
PJ8: We have sufficient on-board data storage to take the top 24 of 27 suggested sites. This is in part because we merged a number of targets that were close together in latitude, so the total number of images of POI's to be acquired (not including our routine polar images) is 17. Adding in polar images we will be acquiring 23 images as Juno races from the north pole to the south pole.

Changes are looming for this Voting task. PJ9 will take place in solar conjunction when Jupiter is behind the sun as seen from the earth. There will be no ground-based images to predict where Points of Interest will be. We are in the same situation for PJ10 as Jupiter is still too close to the sun for earth-based observers to image.

Juno's orbit is evolving. We refer to an elliptical orbit as a "petal". As Jupiter travels around the sun the orbit petal rotates toward midnight, such that most of the time JunoCam sees only a crescent Jupiter if at all. Juno will still make a perijove pass however JunoCam may be looking sideways from its mount parallel to the solar panels. Jupiter will be in the field of view at the poles, but it will be offset from the boresight during the close part of the pass.

We will post the images for you to process and we'll maintain the Planning and Discussion webpages. Keep an eye on the Voting page to see what it will be replaced with in the future.

Candidate Points of Interest

Voting has closed for this round. View results in the POI list below. Be sure to keep an eye on the Processing Gallery for images of POIs selected during this round of voting taken by the JunoCam!
Cylindrical map generated from data submitted via the JunoCam Planning section.

Voting Round Discussion

General discussion about this round.


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  1. comment by Andrew-R-Brown on 2017-08-24 19:54 UT

    Wonderful, I suggested Io a little while ago. How close will JUNO get to Io and what sort of resolution of the volcanic moon will we get?

  2. comment by Sciurus-34 on 2017-08-24 02:44 UT

    Great work NASA! THANK YOU!

  3. comment by Damian_Potter on 2017-08-21 23:45 UT