Hi,
with the knowledge of the length of the planetary of each planet it is very easy to calculate the average distances of each planet from the sun using Kepler's third law of planetary motion:
T² = a³
T: time needed for a planet to complete its orbit around the sun (planetary year)
a: distance from the sun in Astronomical Units (AU)
(1 AU is the average distance between Earth and our Sun.)
Aballon: 0.393 AU
Castrovel: 0.63 AU
Absalom Station: 1.00 AU
Akiton: 1.587 AU
Verces: 2.080 AU
The Idari: 2.52 AU
The Diaspora: between 2.52 and 2.924 AU
Eox: 2.924 AU
Triaxus: 46.491 AU
Liavara: 5.241 AU
Bretheda: 9.655 AU
Apostae: 38.941 AU
Aucturm: 62.996 AU
These numbers are the average distance for each planet from the sun. The real distance may varie over the course of a planetary year because of the orbital eccentricity (e.g. Our planet has an orbital eccentricity of 0.0167). And for most Pact Worlds the eccentricity of their orbits are unknown.
The only thing we know is that Triaxus comes closer to the sun than Castrovel but not as close as Aballon. So it is possible to calculate the orbital eccentricity. Which is btween 0.980 and 0.987. And thus its semi-major axis is between 31.255 and 31.403 AU long.