I understand Planetary Eccentricity and Inclination. However when it applies to a star, does the centre or ecliptic plane refer to the Sun or the Galactic Centre?
The star Sirius for example, 136.336 ± 0.040° inclination, the angle at which it is inclined to Sun, Earth or Galactic Centre?
The star Sirius has an Eccentricity of 0.59142 ± 0.00037. The only thing the star orbits is the Galactic Centre (Sagittarius A*) so I guess that is the centre?