In the JPL's Horizons site, for the New Horizons (ID= -98) I see the note: "Final trajectory update here prior to Pluto flyby. Reconstructions available later, after the encounter.".
Then I thought to use a good integrator to estimate the closest approach distance.
Since in the site I also see: "Merged trajectory solutions (from navigation, 2015-Jul-06)" I took the position of NH for 2015-07-01 00:00 (JD= 2457204.5) and I integrated from there.
I get 13541953 m from Pluto center (after 1165855 s from July, 1st), which should be 12357 km from the Pluto surface.
For Charon I get 29310534 m after 1166689 s.
Any better estimate?
Then I thought to use a good integrator to estimate the closest approach distance.
Since in the site I also see: "Merged trajectory solutions (from navigation, 2015-Jul-06)" I took the position of NH for 2015-07-01 00:00 (JD= 2457204.5) and I integrated from there.
I get 13541953 m from Pluto center (after 1165855 s from July, 1st), which should be 12357 km from the Pluto surface.
For Charon I get 29310534 m after 1166689 s.
Any better estimate?
