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J1407b is a substellar object, either a free-floating planet or brown dwarf, with a massive circumplanetary disk or ring system.It was first detected by automated telescopes in 2007 when its disk eclipsed the star V1400 Centauri, causing a series of dimming events for 56 days.
Planetary discriminants for Ceres, Pluto and Eris taken from Soter, 2006. Planetary discriminants of all other bodies calculated from the Kuiper belt mass estimate given by Lorenzo Iorio. [100] ^ Saturn satellite info taken from NASA Saturnian Satellite Fact Sheet. [101]
Lunar and Planetary Map Query. This interface allows queries of the lunar and planetary maps that NSSDC currently has in stock. New and Updated Data Query. This interface allows queries for those data collections for which the NSSDC has recently acquired new data, either additions to existing collections or entirely new collections.
According to the Starwalk, the next planetary alignment will be visible on Feb. 28. There, stargazers will be able to view Saturn, Mercury, Neptune, Venus, Uranus, Jupiter and Mars in the evening.
The solid surface of Earth is dominated by green vegetation, deserts and white ice sheets. [106] [107] [108] Earth's surface is shaped by plate tectonics that formed the continental masses. [93] Earth's planetary magnetosphere shields the surface from radiation, limiting atmospheric stripping and maintaining life habitability. [109]
The Bond albedo (also called spheric albedo, planetary albedo, and bolometric albedo), named after the American astronomer George Phillips Bond (1825–1865), who originally proposed it, is the fraction of power in the total electromagnetic radiation incident on an astronomical body that is scattered back out into space.
An artist's concept of a planetary system. A planetary system is a set of gravitationally bound non-stellar bodies in or out of orbit around a star or star system.Generally speaking, systems with one or more planets constitute a planetary system, although such systems may also consist of bodies such as dwarf planets, asteroids, natural satellites, meteoroids, comets, planetesimals [1] [2] and ...
Analysis of planetary surfaces and surface features is a major component of planetary science Planetary science (or more rarely, planetology ) is the scientific study of planets (including Earth ), celestial bodies (such as moons , asteroids , comets ) and planetary systems (in particular those of the Solar System ) and the processes of their ...