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Eris (minor-planet designation: 136199 Eris) is the most massive and second-largest known dwarf planet in the Solar System. [22] It is a trans-Neptunian object (TNO) in the scattered disk and has a high- eccentricity orbit. Eris was discovered in January 2005 by a Palomar Observatory –based team led by Mike Brown and verified later that year.
Similarly, Eris, the malevolent "Goddess of Discord and Chaos", is the main antagonist in the DreamWorks 2003 animated movie Sinbad: Legend of the Seven Seas against Sinbad and his allies. The dwarf planet Eris was named after this Greek goddess in 2006. [116] In 2019, the New Zealand moth species Ichneutica eris was named in honour of Eris. [117]
Symbol used for Proserpina and apparent synonym Kora by astrologers in Poland, and the astrology software Urania, who identify Proserpina with the dwarf planet Eris. [35] Transpluto [34] ⯗ U+2BD7: Fictitious planet beyond Pluto (arrow pointing beyond Pluto's orbit)
The abbreviated Vesta symbol is now universal, and the astrological symbol for Pluto has been used astronomically for Pluto as a dwarf planet. [ 37 ] In the early 21st century, symbols for the trans-Neptunian dwarf planets have come into use, particularly Eris (the hand of Eris , ⯰, but also ⯱), Sedna , Haumea , Makemake , Gonggong , Quaoar ...
Denis Moskowitz, a software engineer in Massachusetts, [94] proposed astronomical symbols for the dwarf planets Quaoar, Sedna, Orcus, Haumea, Eris, Makemake, and Gonggong. [ 95 ] [ 94 ] These symbols are somewhat standard among astrologers (e.g. in the program Astrolog ), [ 96 ] which is where planetary symbols are most used today.
A dwarf planet is a small planetary-mass object that is in direct orbit around the Sun, massive enough to be gravitationally rounded, but insufficient to achieve orbital dominance like the eight classical planets of the Solar System. The prototypical dwarf planet is Pluto, which for decades was regarded as a planet before the "dwarf" concept ...
Dysnomia (formally (136199) Eris I Dysnomia) is the only known moon of the dwarf planet Eris and is the second-largest known moon of a dwarf planet, after Pluto I Charon. It was discovered in September 2005 by Mike Brown and the Laser Guide Star Adaptive Optics (LGSAO) team at the W. M. Keck Observatory. It carried the provisional designation ...
Makemake. 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]