"Pluto is dead" - Mike Brown, It's official |
"Pluto is dead" - Mike Brown, It's official |
Aug 24 2006, 01:58 PM
Post
#1
|
|
Member Group: Members Posts: 531 Joined: 24-August 05 Member No.: 471 |
-------------------- - blue_scape / Nico -
|
|
|
Aug 31 2006, 01:54 PM
Post
#2
|
|
Senior Member Group: Members Posts: 1018 Joined: 29-November 05 From: Seattle, WA, USA Member No.: 590 |
Uranus and Saturn are both in less eccentric orbits than Mars. I've never heard anyone suggest that they used to be in more elliptical orbits. I HAVE heard the suggestion that they both formed further in and have gradually drifted further out, but that would have happened when the Solar System was new.
|
|
|
Aug 31 2006, 07:15 PM
Post
#3
|
|
Member Group: Members Posts: 529 Joined: 19-February 05 Member No.: 173 |
Uranus and Saturn are both in less eccentric orbits than Mars. I've never heard anyone suggest that they used to be in more elliptical orbits. I HAVE heard the suggestion that they both formed further in and have gradually drifted further out, but that would have happened when the Solar System was new. Actually, the simulations show U and N get up to e=0.3 or a bit higher en route from their former closer orbits to their current ones. This occurs just after their strong scatterings by J or S and before dynamical friction on the outer disk damps the e back down. |
|
|
Lo-Fi Version | Time is now: 9th June 2024 - 02:21 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. |