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Morbidelli and Kenyon have suggested that Sedna did not originate in the Solar System, but was captured by the Sun from a passing extrasolar planetary system, specifically that of a brown dwarf about 1/20th the mass of the Sun (M ☉) [63] [64] [71] or a main-sequence star 80 percent more massive than the Sun, which, owing to its larger mass ...
Parts-per-million chart of the relative mass distribution of the Solar System, each cubelet denoting 2 × 10 24 kg. This article includes a list of the most massive known objects of the Solar System and partial lists of smaller objects by observed mean radius. These lists can be sorted according to an object's radius and mass and, for the most ...
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 ...
Orcus, Quaoar, Gonggong, and Sedna are generally agreed to be dwarf planets among astronomers, and all but Sedna are known to have moons. [9] A number of other smaller objects, such as Huya, Salacia, 2002 UX 25, Varda, and 2013 FY 27, also have moons, although their dwarf planethood is more doubtful.
It is a large, reddish object, and it takes ~11,400 years for Sedna to complete one orbit. Mike Brown, who discovered the object in 2003, asserts that it cannot be part of the scattered disc or the Kuiper belt because its perihelion is too distant to have been affected by Neptune's migration. [224] The sednoid population is named after Sedna. [222]
The FDIC is an independent government agency charged with maintaining stability and public confidence in the U.S. financial system and providing insurance on consumer deposit accounts.
A representation of the above method with the left hand representing the terrestrial planets and the right hand, with palm turned upward, is representing the giant planets along with TNOs A planetary mnemonic refers to a phrase created to remember the planets and dwarf planets of the Solar System , with the order of words corresponding to ...
On November 25, Mercury goes retrograde in Sagittarius. Astrologer Donna Page explains how it will affect your zodiac sign—and how to head off the chaos.