View Single Post
Old 06-15-2016, 06:40 PM
dtilque dtilque is offline
Charter Member
Join Date: Jan 2000
Location: My own private Nogero
Posts: 5,682
Originally Posted by Leo Bloom View Post
How is this made manifest in the elliptical orbit?
Not really sure. The annual increase (15 cm/year) was calculated by a couple Russians (Gregoriy A. Krasinsky and Victor A. Brumberg) using (I think) timing of comunications to interplanetary probes. This paper says that it is probably due to tidal drag. I'm going to guess that it mainly shows up in a change in the semi-major axis.