I am not speaking of the omission of Pluto's orbit while viewing the solar system - I expect this is a consequence of Pluto's demotion from that of "planet".
I am talking about when you actually select Pluto with orbits enabled - there is no orbit displayed, yet if I select Sedna or Eris there is an orbit shown.
Seems like a bug to me...
No Pluto orbit
Re: No Pluto orbit
It's because Pluto does not orbit the sun.
The Pluto-Charon barycenter (a Celestia ReferencePoint) does orbit the sun, however, and its orbit is shown when it is selected in v1.5.1. Type a 9 to select it. (Use the numeric key 9 above the main keyboard, not the 9 on the numeric pad.) See the screen-capture included below.
It is a defect that v1.5.1 does not show the orbits of unselected ReferencePoints. That deficiency has been fixed in the next release, which is not yet ready for formal distribution. Intermediate "unstable" versions are available. See the thread at viewtopic.php?f=4&t=12221
The Pluto-Charon barycenter (a Celestia ReferencePoint) does orbit the sun, however, and its orbit is shown when it is selected in v1.5.1. Type a 9 to select it. (Use the numeric key 9 above the main keyboard, not the 9 on the numeric pad.) See the screen-capture included below.
It is a defect that v1.5.1 does not show the orbits of unselected ReferencePoints. That deficiency has been fixed in the next release, which is not yet ready for formal distribution. Intermediate "unstable" versions are available. See the thread at viewtopic.php?f=4&t=12221
Selden