Ganymede Observations by JunoCam on Juno Perijove 34
M. A. Ravine, C. J. Hansen, G. C. Collins, P. Schenk, M. A. Caplinger, Leslie Lipkaman Vittling, Daniel Krysak, Robert Zimdar, J. B. Garvin, S. J. Bolton
Abstract
During the Juno Mission's encounter with Ganymede on 7 June 2021, the Juno camera (JunoCam) acquired four images of Ganymede in color. These images covered one-sixth of Ganymede at scales from 840 m to ∼4 km/pixel. Most of this area was only previously imaged by Voyager 1 in 1979, at lower spatial resolution and poorer image quality. No changes were observed over this area of Ganymede in the 42 years since Voyager. JunoCam provided overlapping coverage, from which we developed a digital elevation model of the best-resolved area. A 3 km high dome at the subjovian point was confirmed, 450 km by 750 km. We used the JunoCam images to refine the geologic map of Ganymede in eastern Perrine Regio.