Major Planet

Also found in: Dictionary, Thesaurus, Wikipedia.

major planet

[′mā·jər ′plan·ət]
Any of the four planets that are larger than earth: Jupiter, Saturn, Neptune, and Uranus.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Planet, Major


(also Jovian planet), any one of the planets Jupiter, Saturn, Uranus, and Neptune. The major planets are located beyond the asteroid belt. Compared to the terrestrial planets (inner planets), they have large diameters and masses, lower mean densities, thick atmospheres, short periods of rotation, and a large number of satellites. All these characteristics decrease in moving outward from Jupiter to Neptune. They are absent in the most distant planet, Pluto, and hence Pluto is not considered to be a major planet.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
The vast primordial population of ancient planetesimals served as the building blocks of the eight major planets of the sun's family.
As of mid-2009, there are eight major planets in the solar system--Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune, and five dwarf planets Ceres, Pluto, Haumea, Makemake and Eris.
* Positions of the moon, sun and all major planets on the interactive sky simulation
The app also provides moon, sun and all major planets' positions on the interactive sky simulation.
Over the next five weeks, we will take an in-depth look at all eight of the major planets, plus a supporting cast of moons, asteroids and comets, and a mysterious, as yet unseen, world way out beyond the Kuiper belt.
All four major planets are visible after dark in August.
The fragments, gravitationally perturbed by major planets, now follow 12-year orbits (Arter and Williams admit that "no totally convincing explanation for the observed periodicity has been found," though).
For more call For more call 09050 700 440 09050 700 440 Virgo August 23 - Sept 22 WITH no major planets in your WITH no major planets in your career sky, it's good to work with career sky, it's good to work with the Moon as she moves into this the Moon as she moves into this part of your chart once a month.
Seven major planets move through the constellations of the zodiac that encircle Earth's sky.
By the end of April, signs of stability begin to appear, because three major planets will be located at water signs, forming an isosceles triangle.
To find out more call 0905 817 2771 ?The week kicks off with six out of the seven major planets and luminaries in water signs.