Sentences with phrase «neighbourhood around its orbit»

The International Astronomical Union defines «planet» as a celestial body that, within the Solar System that is in orbit around the Sun; has sufficient mass for its self - gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape; and has cleared the neighbourhood around its orbit; or within another system, it is in orbit around a star or stellar remnants; has a mass below the limiting mass for thermonuclear fusion of deuterium; and is above the minimum mass / size requirement for planetary status in the Solar System.

Measuring in at around half the size of Makemake, RR245 is much smaller than other known dwarf planets in the neighborhood, but still meets the International Astronomical Union's (IAU) criteria of that category: namely, it's in orbit around the Sun, it has sufficient mass for its self - gravity to overcome rigid body forces so that it assumes a nearly round shape, and, unlike regular planets, it hasn't cleared the neighbourhood around its orbit, and it isn't a satellite.

Not exact matches

The research also suggests that habitable - zone super-Earth planets (where liquid water could exist and making them possible candidates to support life) orbit around at least a quarter of the red dwarfs in the Sun's own neighbourhood.