26 Dec
2019
26 Dec
'19
12:21 p.m.
Here are 9 co-periodic planets <http://gosper.org/9planets.gif>. Shades of Shoemaker Levy 9. The string appears to periodically develop an inflection. —rwg I always thought that orbits with unit eccentricity were unbounded parabolas. Counterexample(?): Radial trajectories. On Thu, Dec 26, 2019 at 3:03 AM Bill Gosper <billgosper@gmail.com> wrote:
The orbital period of a planet depends only on its major axis. gosper.org/4planets.gif . Does anybody feel like proving that with this phasing, these planets are collinear only twice per period? —rwg