Dawn approaches Ceres, From opnav images to first orbit |
Dawn approaches Ceres, From opnav images to first orbit |
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#301
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Solar System Cartographer ![]() ![]() ![]() ![]() Group: Members Posts: 10194 Joined: 5-April 05 From: Canada Member No.: 227 ![]() |
On Tuesday (two days from now, for visitors from the future), the first optical navigation image will be taken... hopefully we'll have it in our hands soon after that. So it's time for a new topic. Over the next few months we'll have progressively closer images and full orbit characterization sequences, no doubt including multispectral image sets.
A new world... This is a bit of reprocessing I have been doing with the Hubble images from a few years ago. Phil -------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke Maps for download (free PD: https://upload.wikimedia.org/wikipedia/comm...Cartography.pdf NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain) |
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#302
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Member ![]() ![]() ![]() Group: Members Posts: 316 Joined: 1-October 06 Member No.: 1206 ![]() |
Gibbous or not, its looking decidedly non spherical, even non oblate spheroidal. I'm thinking Iapetus without the extreme albedo differences.
That cant be good for an active interior. Still, wait, wait.... P |
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#303
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![]() Administrator ![]() ![]() ![]() ![]() Group: Admin Posts: 5172 Joined: 4-August 05 From: Pasadena, CA, USA, Earth Member No.: 454 ![]() |
Gibbous or not, its looking decidedly non spherical, even non oblate spheroidal. I'm thinking Iapetus without the extreme albedo differences. It's okay for it to be nonspherical. Ceres is a fast rotator compared to Saturnian moons, so has considerable flattening. It could be in hydrostatic equilibrium (that is, its shape is what you would expect for the combination of spin and gravity that it currently has) as long as it is differentiated. -------------------- My website - My Patreon - @elakdawalla on Twitter - Please support unmannedspaceflight.com by donating here.
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