Juno Extended Mission, Perijove 34-76 |
Juno Extended Mission, Perijove 34-76 |
Sep 2 2020, 08:05 PM
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Senior Member Group: Moderator Posts: 3241 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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Jan 8 2021, 04:58 PM
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Member Group: Members Posts: 715 Joined: 22-April 05 Member No.: 351 |
The results of the 2020 Senior Review and NASA's response have been posted
Response Report Some highlights from NASA's response: Juno Extended Mission - Juno is approved for an extended mission from August 2021 until September 2025. NASA expects that the mission end-of-life will occur during this period. - Juno will continue observations of the Jovian system as the spacecraft’s periapsis processes northward and to lower altitudes. Juno will utilize additional propulsive maneuvers to perform close flybys of Ganymede, Europa, and Io. - Juno will continue to explore major scientific questions related to Jupiter’s interior, structure, and atmosphere, including the polar vortices, the magnetic ‘Great Blue Spot,’ water abundances, and the Jovian aurorae, focusing on observations enabled as the periapsis moves northward. - The EM will add targeted observations of three of Jupiter’s large satellites. Imaging observations will search for changes since Voyager and Galileo, and observations with the spacecraft’s Microwave Radiometer will explore Europa’s ice shell. In situ measurements of Jupiter’s ring system will explore their structure and characterize their dust population. -------------------- |
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Jan 9 2021, 01:29 AM
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Senior Member Group: Members Posts: 2542 Joined: 13-September 05 Member No.: 497 |
QUOTE "Imaging observations will search for changes since Voyager and Galileo..." If the regions that had no previous coverage were going to be imaged, I think it would have said something different. However, we won't really be sure until the new maneuver design is finalized what each encounter will look like, and there are many constraints on s/c attitude that also factor in. -------------------- Disclaimer: This post is based on public information only. Any opinions are my own.
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