ORBITAL MOTION Lewis orbits the gas giant Zenthra in just over seven standard days. It is tidally locked with Zenthra. So one side always faces the planet. Since Zenthra is so big in the sky, (3.75 degrees, over seven times the angular size of Luna), it eclipses the sun each once each time Lewis orbits it. The eclipse lasts about two hours. Inselberg is situated in a prime viewing site for this, and most visitors view the eclipse several times.