Ephemeris from geocentric elements

rbaker7356 Jan 28, 2013

I've been following the discussion on MPML about the upcoming close approach of 2012 DA14. Bill has already addressed this in detail. But when more observations are available I'd like to be able to create updated geocentric elements with Find_Orb which can then be used in Guide.

I'm using the development version of Find_Orb (Jan 16 2013). With the current list of observations from the MPC and the epoch set to 2013 Feb 15.8, I can get Find_Orb to determine geocentric elements with a reasonable mean residual. But the ephemeris appears to be the same as an ephemeris produced when the 'heliocentric orbits only' box is checked.

Once the geocentric elements are created, how can an ephemeris based on those geocentric elements be produced?

Thank you,
Ron Baker