Laplace plane

Laplace Plane
The Laplace plane (as used in our satellite orbital elements tables) is defined as the plane in which the satellite's nodal precession is contained (on average).

JPL Horizons: Mean orbital elements referred to the local Laplace planes, Epoch 2000 Jan. 1.50.
JPL Horizons: Mean orbital elements referred to the Saturn equator, Epoch 2004 Jan. 1.00.

878° (to the local Laplace plane)
139.89° (to the ecliptic) Is a satellite of
Uranus Physical characteristics Mean diameter
~98 km (estimate) Surface area
~30,000 km2 (estimate) Volume
~490,000 km3 (estimate) Mass
~7.4 kg (estimate) Mean density
~1.

"Note: some semi-major axis were computed using the µ value, while the eccentricities were taken using the inclination to the local Laplace plane"
^ a b c d e f g h Siedelmann P.K.; Abalakin V.K.; Bursa, M.

See also: Eccentricity, Inclination, Orbit, Equator, Eccentric