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Chiron's symbol was adapted as additional centaurs were discovered; symbols for 5145 Pholus and 7066 Nessus have been encoded in Unicode. [36] The abbreviated Vesta symbol is now universal, and the astrological symbol for Pluto has been used astronomically for Pluto as a dwarf planet. [37]
Pluto has an alternative symbol consisting of a planetary orb over Pluto's bident: it is more common in astrology than astronomy, and was popularised by the astrologer Paul Clancy, [93] but has been used by NASA to refer to Pluto as a dwarf planet. [81] There are a few other astrological symbols for Pluto that are used locally. [93]
However, the most common astrological symbol for Pluto, occasionally used in astronomy as well, is an orb (possibly representing Pluto's invisibility cap) over Pluto's bident , which dates to the early 1930s. [35] [j] The name 'Pluto' was soon embraced by wider culture.
One symbol, ♇, is a monogram of the letters PL (which can be interpreted to stand for Pluto or for astronomer Percival Lowell), was announced with the name of the new planet by the discoverers on May 1, 1930. [19] Another symbol, which was popularized in Paul Clancy's astrological publications, is based on Pluto's bident: [citation needed].
Astronomical symbols for the Sun, the planets (first symbol for Uranus), and the Moon, as well as the first symbol for Pluto were taken from NASA Solar System Exploration. [103] The symbol for Ceres, as well as the second symbol for Uranus, was taken from material published by James L. Hilton. [104]
The definition of a planet has been a hot topic ever since a change kicked Pluto out of our planetary lineup in 2006. Now, a group of researchers is proposing a new definition yet again—one with ...
English: Planetary symbol for Pluto, U+2BD3 ⯓. It's common in astrology and has been used by NASA. [ 1 ] See File:Pluto symbol.svg for Pluto's traditional astronomical planetary symbol.
[81] [82] [83] NASA has used his Haumea, Eris, and Makemake symbols, as well as the traditional astrological symbol for Pluto [84] when referring to it as a dwarf planet. [82] Symbols have been proposed for the next-largest named candidates, but do not have consistent usage among astrologers. [ 82 ]