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541132 Leleākūhonua (/ ˌ l ɛ l eɪ ɑː ˌ k uː h oʊ ˈ n uː ə /) (provisional designation 2015 TG 387) is an extreme trans-Neptunian object and sednoid in the outermost part of the Solar System.
S/2015 (136472) 1, unofficially nicknamed MK2 by the discovery team, [2] is the only known moon of the trans-Neptunian dwarf planet Makemake. [1] [4] It is estimated to be 175 km (110 mi) in diameter and has a semi-major axis of at least 21,000 km (13,000 mi) from Makemake. [1] Its orbital period is at least 12 days if it has a circular orbit.
Makemake [e] (minor-planet designation: 136472 Makemake) is a dwarf planet and the largest of what is known as the classical population of Kuiper belt objects, [b] with a diameter approximately that of Saturn's moon Iapetus, or 60% that of Pluto. [24] [25] It has one known satellite. [26]
A sednoid is a trans-Neptunian object with a large semi-major axis and a high perihelion, similar to the orbit of the dwarf planet Sedna. The consensus among astronomers is that there are only three objects that are known from this population: Sedna, 2012 VP 113, and 541132 Leleākūhonua (2015 TG 387). [1] All three have perihelia greater than ...
Because Sedna and 2002 MS 4 have no known moons, ... 0.2 0.0204 dwarf planet; plutino; binary: 2004 Sedna 90377: ... Makemake I: ≈ 80: moon of Makemake [146]
Sedna (minor-planet designation: 90377 Sedna) is a dwarf planet in the outermost reaches of the Solar System, orbiting the Sun beyond the orbit of Neptune. Discovered in 2003, the planetoid's surface is one of the reddest known among Solar System bodies.
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 ...
One particularly distant body is 90377 Sedna, which was discovered in November 2003.It has an extremely eccentric orbit that takes it to an aphelion of 937 AU. [2] It takes over 10,000 years to orbit, and during the next 50 years it will slowly move closer to the Sun as it comes to perihelion at a distance of 76 AU from the Sun. [3] Sedna is the largest known sednoid, a class of objects that ...