/r/Callisto
Articles and discussion about Jupiter's moon Callisto.
Callisto is the second largest moon of Jupiter.
Unlike the other Galilean moons, Callisto is not in orbital resonance, is not tidally heated, and lies outside of Jupiter's powerful radiation belts.
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/r/Callisto
Here's the study I'm referencing:
From our results, the capture of Callisto into resonance appears to be extremely likely (100% of our simulations). The exact timing of its entrance into resonance depends on the precise rate of energy dissipation in the system. Assuming the most recent estimate of the dissipation between Io and Jupiter, the resonant encounter happens at about 1.5 Gyr from now.
(https://assets.pubpub.org/zofsi78m/11617915759126.pdf)
Hello,
I was just wondering if anyone can recommend any good books on Callisto?
Thanks :)
Do you guys believe that manned exploration of Callisto is feasible within the next ~30 years? If not, how long do you think? Also, do you guys reckon that colonization of Callisto is a good idea after Mars?
Thanks :) Would love to hear you guys comments on this.
I can't believe it took me this long to find this place. I love Callisto and think it's one of the most special places in our Solar System. I could go on at length.
I am sorta writing this backstory to a sci-fi novel/movie about a manned mission to Callisto, and have all sorts of ideas. I'd love to discuss them with you.
The National Space Science Center (NSSC), Chinese Academy of Sciences (CAS) is in the very early planning stages of a future Chinese space mission to the Jovian system.
JCO, the Jupiter Callisto Orbiter, first flies by and characterizes several irregular satellites during its Jovian orbital tour. It is then injected into Callisto orbit to characterize its surface and interior, investigate its degree of differentiation and search for the possible existence of an internal ocean. As an option, JCO could release a lander to Callisto’s surface to perform key measurements of chemical composition, clues to understanding the formation scenario of the Galilean moons.
After an extensive Jupiter orbital tour it is foreseen to enter into an orbit around Callisto to investigate the internal structure, as well as the exosphere of Callisto. Tracking data of a Callisto orbiter promises to extend our knowledge of the interior structure of Callisto significantly beyond of what can even be expected from JUICE. A laser altimeter would allow for accurate global topography measurements and enable the use of altimetry cross-overs to substantially improve the precise orbit determination and geodetic parameter recovery. An on-board accelerometer would enable to separate all kinds of non-gravitational accelerations from the gravitational signal and significantly facilitate the dynamical spacecraft modeling.
Callisto geodesy: A simulation study to support further space missions to the Jovian system
Gan De: Science Objectives and Mission Scenarios For China’s Mission to the Jupiter System
https://presentations.copernicus.org/EGU2020/EGU2020-20179_presentation.pdf
The mission is competing for The Discovery Program funding. More details will be announced on 11 December 2019 at AGU Fall Meeting.
https://agu.confex.com/agu/fm19/meetingapp.cgi/Paper/500346
MAGIC (Magnetics, Altimetry, Gravity and Imaging of Callisto) is a high performance low altitude orbital mission that will investigate Callisto for over a year and address questions of Callisto’s differentiation, state of hydrostatic equilibrium, the presence of an ocean, the age of its surface, and the conditions at the time of its formation. After a 7-year cruise to Jupiter and a series of flybys the proposed spacecraft will enter into a 100 km circular orbit for a few months to obtain imagery, magnetics, altimetry and gravity before lowering into a 50-km near circularpolar orbit for its primary mapping phase of 1 year to obtain four global datasets:imagery, altimetry, magnetometry, and gravity.
This camera will be able to cover 100% of Callisto surface at≤2 km/pixel, 41 % at≤1 km/pixel, 14 % at≤400m/pixel, 6.5% at ≤200 m/pixel, and some targets at resolutions ~ 10 m/pixel, with 4 colour imaging at medium resolutions.
https://ssed.gsfc.nasa.gov/IPM/PDF/1054.pdf
So we are going to get good pictures and maps of Callisto after multiple fly-by maneuvers at Callisto after 2030