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This is a compilation of symbols commonly used in astronomy, particularly professional astronomy. Age (stellar) τ - age; Astrometry parameters. ...
The use of astronomical symbols for the Sun and Moon dates to antiquity. The forms of the symbols that appear in the original papyrus texts of Greek horoscopes are a circle with one ray for the Sun and a crescent for the Moon. [3] The modern Sun symbol, a circle with a dot (☉), first appeared in Europe in the Renaissance. [3]
Planetary symbols are used in astrology and traditionally in astronomy to represent a classical planet (which includes the Sun and the Moon) or one of the modern planets. The classical symbols were also used in alchemy for the seven metals known to the ancients, which were associated with the planets, and in calendars for the seven days of the week associated with the seven planets.
Sometimes, font variants of Greek letters are used as distinct symbols in mathematics, in particular for ε/ϵ and π/ϖ. The archaic letter digamma (Ϝ/ϝ/ϛ) is sometimes used. The Bayer designation naming scheme for stars typically uses the first Greek letter, α, for the brightest star in each constellation, and runs through the alphabet ...
Pages in category "Astronomical symbols" The following 12 pages are in this category, out of 12 total. This list may not reflect recent changes. ...
One of many solar symbols used to represent the Sun; U+2609 ☉ SUN (Planet symbol in astronomy) Gold (Alchemical symbols: planetary metals) Gardiner N5 (U+131F3 ㇳ EGYPTIAN HIEROGLYPH N005): The sun, part of the representation of the name of Ra in Egyptian hieroglyphs. (This hieroglyph is shown conventionally with a small circle (rather than ...
The symbols for Jupiter and Saturn are identified as monograms of the initial letters of the corresponding Greek names, and the symbol for Mercury is a stylized caduceus. [13] A. S. D. Maunder finds antecedents of the planetary symbols in earlier sources, used to represent the gods associated with the classical planets.
Latin and Greek letters are used in mathematics, science, engineering, and other areas where mathematical notation is used as symbols for constants, special functions, and also conventionally for variables representing certain quantities.