Celesita 1.6.1 has an outdated Plutonian system that has not been updated, but I do have an ssc code that you can use to display both Styx and Kerberos in Celestia.
Code: Select all
# Standalone data for Pluto's two moons, Kerberos and Styx. They are not included in default Celestia.
"Kerberos:S-2011 P 1:P4" "Sol/Pluto"
# chaotic rotation, exact rotation period unknown
Inclination 0.389 # inclination to Charon's orbit
"Styx:S-2012 P 1:P5" "Sol/Pluto"
# like Kerberos, Styx has a chaotic rotation, but its exact rotation period is unknown
Inclination 0.809 # inclination to Charon's orbit
And no, Celestia never was updated after 1.6.1, but I highly recommend you get Celestia Origin. It does a complete upgrade to a Celestia installation. You can get it on the announcements section on the forums.