The inclination of a planet tells how far above or below an established reference plane its orbit lies.
From the en.wikipedia.org
Periodic comets have an average inclination to the ecliptic of only ten degrees, and an orbital period of just 6.5 years, so Halley's orbit is atypical.
From the en.wikipedia.org
Meanwhile, the orbiter engine performed a burn to put the spacecraft into a 1380 x 24,940 km, 18 hour orbit about Mars with an inclination of 48.9 degrees.
From the en.wikipedia.org
The orbit of Compass-M1 is nearly circular, has an altitude of 21,150 km and an inclination of 55.5 degrees.
From the en.wikipedia.org
But thanks to a worldwide eyes-on-the-sky network of amateurs, the spacecraft is reportedly in a 39.99 degrees inclination, circling the Earth in an orbit 401 kilometers by 422 kilometers.
From the infowars.com
The satellite was launched on 25 July 1990 and operated in a highly elliptical geosynchronous transfer orbit with a perigee of 305 km, an apogee of 35,768 km and an inclination of 18o.
From the sciencedaily.com
Due to its low altitude and inclination, once a year the GOCE satellite will experience an eclipse period of 135 days with one eclipse of up to 28 minutes per orbit.