Juno Extended Mission, Perijove 34-76 |
Juno Extended Mission, Perijove 34-76 |
Sep 2 2020, 08:05 PM
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#1
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Senior Member Group: Moderator Posts: 3233 Joined: 11-February 04 From: Tucson, AZ Member No.: 23 |
At today's Outer Planet Assessment Group (OPAG) meeting, Scott Bolton gave a presentation on Juno, providing an update on the mission and providing more information on its extended mission proposal. The proposal has been sent to NASA and they expect a final decision later this year.
The proposed extended mission starts where the current one ends at perijove 34 in June 2021 and continues through orbit 76 in September 2025. The continued northward progression of the perijove latitude, and continued lower altitude of the ascending node, is going to enable a lot of great science both at Jupiter (higher resolution views of Jupiter's poles) and of its satellites. Most excitingly for me, Juno will perform several flybys of the Galilean satellites. This includes a 1000-km encounter with Ganymede next June during PJ34, a 320-km encounter with Europa in late 2022, and TWO Io flybys in early 2024 at an altitude of 1500 km. There are also a number of "Voyager-class" encounters with Ganymede, Europa, and Io between mid-2021 and mid-2025. The PDF for Scott Bolton's presentation can be found on the page for the OPAG meeting: https://www.lpi.usra.edu/opag/meetings/opag2020fall/ -------------------- &@^^!% Jim! I'm a geologist, not a physicist!
The Gish Bar Times - A Blog all about Jupiter's Moon Io |
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Jun 9 2021, 11:14 PM
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#76
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Member Group: Members Posts: 154 Joined: 8-June 04 Member No.: 80 |
Cassini got many targets of opportunity because it stayed in the plane shared by the satellites, for many years, as well as the (generally) shorter orbits and much larger resolution on the camera, so the spacecraft didn't need to get particularly close. There were also many more small targets to choose from, of course. I think you meant Galileo. Cassini flew by Jupiter briefly in 2000. |
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Jun 9 2021, 11:21 PM
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#77
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Senior Member Group: Members Posts: 2517 Joined: 13-September 05 Member No.: 497 |
Not that much of a chance. A 53 day orbit means a little less than 7 perijoves per year. Agreed, although the orbit period has now been reduced to 43 days. I ran a search with the reference trajectory a while back, and the best one I found then was an 8-pixel view of Amalthea in July 2025 which may or may not be usable within other constraints. -------------------- Disclaimer: This post is based on public information only. Any opinions are my own.
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Jun 9 2021, 11:36 PM
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#78
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Senior Member Group: Members Posts: 2087 Joined: 13-February 10 From: Ontario Member No.: 5221 |
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Jun 10 2021, 10:09 PM
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#79
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Senior Member Group: Members Posts: 1276 Joined: 25-November 04 Member No.: 114 |
There are still distant observations I believe are planned. There are shown here. https://www.youtube.com/watch?v=hAgLl354PbE...i5&index=15
Ganymede Mid 2021 50,000KM Europa Mid 2021 88,000KM Europa Early 2022 47,000KM Io Mid 2022 85,000KM Plus more. |
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Aug 1 2021, 10:30 PM
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Member Group: Members Posts: 444 Joined: 1-July 05 From: New York City Member No.: 424 |
Does anyone recognize who processed this image? Was it one of our resident wizards?
https://twitter.com/konstructivizm/status/1...794085103230980 It was posted in another forum, and I'd like to add an appropriate credit. |
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Aug 3 2021, 06:50 AM
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#81
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Member Group: Members Posts: 411 Joined: 18-September 17 Member No.: 8250 |
Does anyone recognize who processed this image? Was it one of our resident wizards? https://twitter.com/konstructivizm/status/1...794085103230980 It was posted in another forum, and I'd like to add an appropriate credit. Looks like a derivative of this PJ06_123 image https://www.missionjuno.swri.edu/junocam/processing?id=1330 which is the work of Gerald Eichstädt and Justin Cowart. |
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Aug 4 2021, 02:25 AM
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#82
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Member Group: Members Posts: 444 Joined: 1-July 05 From: New York City Member No.: 424 |
Thanks very much.
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Apr 23 2024, 11:57 PM
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#83
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Member Group: Members Posts: 228 Joined: 13-October 09 From: Olympus Mons Member No.: 4972 |
With the Galilean flyby's accomplished, eyes will start turning towards whether Juno will get another mission extension next year. Any possible clues on what will happen?
-------------------- "Thats no moon... IT'S A TRAP!"
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May 16 2024, 11:29 PM
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#84
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Merciless Robot Group: Admin Posts: 8784 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
Nice JPL article about recent Europa observations from JunoCam.
-------------------- A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
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May 17 2024, 01:40 AM
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#85
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Senior Member Group: Members Posts: 2087 Joined: 13-February 10 From: Ontario Member No.: 5221 |
With the Galilean flyby's accomplished, eyes will start turning towards whether Juno will get another mission extension next year. Any possible clues on what will happen? What is the limiting factor on operations continuing? It's not radiation damage (which has been much more benign than expected), so it is fuel, or some other system that is reaching the end of life? |
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