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Tombaugh Regio (/ ˈ t ɒ m b aʊ ˈ r ɛ dʒ i oʊ /), sometimes nicknamed "Pluto's heart" after its shape, [2] is the largest bright surface feature of the dwarf planet Pluto. [3] [4] [5] It lies just north of Pluto's equator, to the northeast of Belton Regio and to the northwest of Safronov Regio, which are both dark features. [6]
"Sunspot and the Great Red Spot": Sunspot is determined to get to Jupiter to meet his fellow pet aliens, other members of the Red Spot Club. The Club is thousands of years old. They meet annually at an exact time to observe and celebrate the Great Red Spot. But, mechanical problems with the family wagon/saucer may thwart the trip.
The brightest cluster of spots ("Spot 5") is located in an 80-kilometer (50 mi) crater called Occator, [1] [2] which is located at 19.86° N latitude; 238.85 E longitude. [1] [2] Spots on Ceres from different angles. The spot in the center of the crater is named Cerealia Facula, [16] and the group of spots to the east - Vinalia Faculae. [17]
The dwarf planet systems Pluto–Charon and Eris–Dysnomia are the only known examples of mutual tidal locking in the Solar System, [20] though it is likely that Orcus–Vanth is another. [ 21 ] The reddish-brown cap of the north pole of Charon is composed of tholins , organic macromolecules that may be essential ingredients of life .
Ceres (minor-planet designation: 1 Ceres) is a dwarf planet in the middle main asteroid belt between the orbits of Mars and Jupiter.It was the first known asteroid, discovered on 1 January 1801 by Giuseppe Piazzi at Palermo Astronomical Observatory in Sicily, and announced as a new planet.
The second resolution, 5B, defined dwarf planets as a subtype of planet, as Stern had originally intended, distinguished from the other eight that were to be called "classical planets". Under this arrangement, the twelve planets of the rejected proposal were to be preserved in a distinction between eight classical planets and four dwarf planets.
Dwarf planet Eris, similar in size to its better-known cosmic cousin Pluto, has remained an enigma since being discovered in 2005 lurking in the solar system's far reaches. While Pluto was ...
The number of dwarf planets in the Solar System is unknown. Estimates have run as high as 200 in the Kuiper belt [1] and over 10,000 in the region beyond. [2] However, consideration of the surprisingly low densities of many large trans-Neptunian objects, as well as spectroscopic analysis of their surfaces, suggests that the number of dwarf planets may be much lower, perhaps only nine among ...