Assertion: planet's orbit | /r/HasProperty | elliptical
Facets:
value: very
type: DEGREE
value: with a period of 2 hours
type: TEMPORAL
value: in shape
type: OTHER
value: usually
type: DEGREE
Source sentences:
text: About the same time, by careful analysis of pre-telescopic observational data collected by Tycho Brahe, Johannes Kepler found the planets' orbits were elliptical rather than circular.
text: He also believed that the orbits of planets are elliptical.
text: The planets follow elliptical orbits around he sun, essentially obeying Kepler’s comparatively simple laws.
text: First, he found that the orbits of the planets in our Solar System are elliptical, not circular (or epicyclic), as had previously been believed, and that the Sun is not located at the center of the orbits, but rather at one focus.
text: Observations also revealed that Pluto's orbit was very elliptical, far more than that of any other planet.
text: The orbit is elliptical, and in simple cases, the centre of the two bodies' mass is at one of the foci of the ellipse.
text: The orbit is usually elliptical in shape, mainly depending on the gravitational force of the planet and the star.
text: Petit found that the orbit was elliptical, with a period of 2 hours 44 minutes 59 seconds, an apogee at 3570 km above the Earth’s surface and perigee at just 11.4 km (!) above the Earth’s surface.
text: Anderson concluded that the tenth planet must have a highly elliptical orbit, carrying it far away to be undetectable now but periodically bringing it close enough to leave its disturbing signature on the paths of the outer planets.