The Tilt of a planet is the axial tilt with respect to the orbital plane. The units of tilt are degrees. The Semimajor Axis is the longest diameter of the orbital ellipse. The units of semimajor axis are meters. The Eccentricity is how elliptical an orbit is.
Eccentricity is unitless.
The Inclination is how much a planet's orbit is tilted with respect to the Earth's orbital plane. The units of inclination are degrees. The units of orbital velocity are meters per second. The Orbital Period is the time it takes for a planet to go once around the sun. The orbital period is given in seconds.