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 Candidates list below. Be sure to keep an eye on the Processing Gallery for images of POIs/Campaigns selected during this round of voting taken by the JunoCam!
Cylindrical map generated from data submitted via the JunoCam Planning section.

Round Discussion

General discussion about this round.


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  1. comment by Tournefort-29 on 2018-03-01 16:52 UT

    Dear NASA; Juno Mission; as far as I understand, the JUNO CAM Tool is taking a high resolution images from Planet Jupiter. What we are seeing is a Map of atmospheric formations that are constantly moving and changing. Can you show approximately what part of the Jupiter hard surface or Jupiter land is actually visible? Or we are seeing just a clouds and atmospheric formations on those Maps?

  2. 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?

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

    Great work NASA! THANK YOU!

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


    • comment by Candy on 2017-08-17 17:05 UT

      I think I need 5 votes to follow the advice of Philosophia! Who can resist a POI named Stargate? The NNTB is always very interesting so that got my second vote. But my third vote is for Caltech, to see if we see more of those high small storms.

      • comment by Philosophia-47 on 2017-08-17 00:32 UT

        Here is a predictive map for PJ8, and here are my ‘top tips’ for voting this time round. Further details of these are on our web page at:

        1. The NEBn: a cluster of new barges and ovals. [POI: ‘Location Stargate’ (ID 1083) or ‘NCC-1701-E’ (ID 260)]

        2. The STB Ghost: a large long-lived cyclonic circulation. Ideally we should get two images: [POI for best overview: ‘Coolest place on Jupiter’ (ID 1200). POI for closest view: ‘STB Ghost east end’ (ID 1246) or ‘Eye of Odin’ (ID 1175).]

        3. The NNTB: a turbulent region, which should look beautiful, and possibly also dark vortices on the NNTBs jet stream. [POI: ‘Turbulent sector of the NNTB’ (ID 1247)]

        4. High northern latitudes. The turbulence is always spectacular, the bland zone (N6 domain) deserves another close look, and a long-lived white oval might be in view. [POI: ‘North Pole’ (ID 1139), actually latitude 58ºN]

        5. South Polar region. [POI: ‘South Polar region’ (ID 1248)]

        By the way, we have also posted a new, short interim report on the planet’s activity, with the July 24-28 map, as Report no.14 at:

        --John Rogers.