Phobos |
Phobos |
Nov 20 2010, 09:20 PM
Post
#196
|
|
Solar System Cartographer Group: Members Posts: 10226 Joined: 5-April 05 From: Canada Member No.: 227 |
The rotation axis of Mars precesses and varies in obliquity. So is it a remarkable coincidence that Phobos and Deimos orbit in very close to equatorial orbits, or are their orbit planes tied to the planet's equatorial plane? That seems to be what brellis is asking, rather than a question about the rotation axis of the satellite. Alas, I know nothing about orbital dynamics.
Phil FURTHER ORBITAL MECHANICS DISCUSSION MOVED HERE - ADMIN -------------------- ... 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 PDF: 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) |
|
|
Nov 25 2010, 09:26 PM
Post
#197
|
|||
Member Group: Members Posts: 568 Joined: 20-April 05 From: Silesia Member No.: 299 |
Orbits 7701-8312 released. (ftp://psa.esac.esa.int/pub/mirror/MARS-EXPRESS/HRSC)
Phobos over Mars, the view more beautiful than before. The image is sharp as a razor. Orbit 7982 -------------------- Free software for planetary science (including Cassini Image Viewer).
http://members.tripod.com/petermasek/marinerall.html |
||
|
|||
Nov 25 2010, 09:28 PM
Post
#198
|
|
Member Group: Members Posts: 568 Joined: 20-April 05 From: Silesia Member No.: 299 |
-------------------- Free software for planetary science (including Cassini Image Viewer).
http://members.tripod.com/petermasek/marinerall.html |
|
|
Nov 25 2010, 09:30 PM
Post
#199
|
|
Merciless Robot Group: Admin Posts: 8785 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
Bra-VO, ESA!!! Absolutely gorgeous!
-------------------- 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.
|
|
|
Nov 26 2010, 12:19 AM
Post
#200
|
|
Solar System Cartographer Group: Members Posts: 10226 Joined: 5-April 05 From: Canada Member No.: 227 |
Very spectacular!
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 PDF: 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) |
|
|
Nov 26 2010, 12:38 AM
Post
#201
|
|
Senior Member Group: Members Posts: 2106 Joined: 13-February 10 From: Ontario Member No.: 5221 |
Like we're floating alongside.... hurry up Phobos-Grunt!
|
|
|
Nov 26 2010, 12:45 AM
Post
#202
|
|
Senior Member Group: Members Posts: 1452 Joined: 26-July 08 Member No.: 4270 |
Wow. That is nice!
What causes the wavy appearance of the Martian limb? -------------------- -- Hungry4info (Sirius_Alpha)
|
|
|
Nov 26 2010, 02:04 AM
Post
#203
|
|
Solar System Cartographer Group: Members Posts: 10226 Joined: 5-April 05 From: Canada Member No.: 227 |
A slight rocking of the spacecraft during the scan. If it had just rotated to take this off-nadir view the long booms might not have settled down yet.
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 PDF: 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) |
|
|
Nov 26 2010, 02:07 AM
Post
#204
|
|
Merciless Robot Group: Admin Posts: 8785 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
Ahhhh...yeah, makes sense; I thought it was some sort of processing artifact.
-------------------- 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.
|
|
|
Nov 26 2010, 02:15 AM
Post
#205
|
|
Member Group: Members Posts: 128 Joined: 10-December 06 From: Atlanta Member No.: 1472 |
|
|
|
Nov 26 2010, 02:40 AM
Post
#206
|
|
Member Group: Members Posts: 903 Joined: 30-January 05 Member No.: 162 |
Strange stone, alien vapor . . . .
Fran Lebowitz |
|
|
Nov 26 2010, 08:28 AM
Post
#207
|
||
The Poet Dude Group: Moderator Posts: 5551 Joined: 15-March 04 From: Kendal, Cumbria, UK Member No.: 60 |
Orbits 7701-8312 released. (ftp://psa.esac.esa.int/pub/mirror/MARS-EXPRESS/HRSC) Thank you, thank you, THANK YOU for the heads up! Last night I spent close to 3 hours browsing that data release, and it's just bursting at the seams with beautiful images. One of them I came across by accident shows Gusev crater and what must surely be the shadow of Phobos on the landscape to the south. ( I've tweaked the contrast a teeny bit to make it look a bit more dramatic ) -------------------- |
|
|
||
Nov 26 2010, 09:17 AM
Post
#208
|
|
Senior Member Group: Members Posts: 1452 Joined: 26-July 08 Member No.: 4270 |
Wow!
-------------------- -- Hungry4info (Sirius_Alpha)
|
|
|
Nov 26 2010, 01:37 PM
Post
#209
|
|
Junior Member Group: Members Posts: 33 Joined: 13-April 05 Member No.: 232 |
That Gusev picture is fabulous.
|
|
|
Nov 26 2010, 03:09 PM
Post
#210
|
|
Merciless Robot Group: Admin Posts: 8785 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
MEx wide-angle images have always impressed me, but, boy, this set is exceptional! Well-spotted, Stu.
-------------------- 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.
|
|
|
Lo-Fi Version | Time is now: 24th September 2024 - 12:15 AM |
RULES AND GUIDELINES Please read the Forum Rules and Guidelines before posting. IMAGE COPYRIGHT |
OPINIONS AND MODERATION Opinions expressed on UnmannedSpaceflight.com are those of the individual posters and do not necessarily reflect the opinions of UnmannedSpaceflight.com or The Planetary Society. The all-volunteer UnmannedSpaceflight.com moderation team is wholly independent of The Planetary Society. The Planetary Society has no influence over decisions made by the UnmannedSpaceflight.com moderators. |
SUPPORT THE FORUM Unmannedspaceflight.com is funded by the Planetary Society. Please consider supporting our work and many other projects by donating to the Society or becoming a member. |