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Each IAU constellation has an official three-letter abbreviation based on the genitive form of the constellation name. As the genitive is similar to the base name, the majority of the abbreviations are just the first three letters of the constellation name: Ori for Orion/Orionis, Ara for Ara/Arae, and Com for Coma Berenices/Comae Berenices.
In Vedic period astronomy, which drew its zodiac signs and many constellations from the period of the Indo-Greek Kingdom, Indian observers saw the asterism as a boat. [ 17 ] The Māori had several names for the constellation, including Te Waka-o-Tamarereti (the canoe of Tamarereti), [ 18 ] Te Kohi-a-Autahi (an expression meaning "cold of autumn ...
Therefore, Carina has the α, β, and ε, Vela has γ and δ, Puppis has ζ, and so on. [3] In 1844, John Herschel proposed complete dividing Argo Navis in accordance with Lacaille's divisions. [4] However, the constellation continued to be used into the 20th century, and officially received a three-letter designation alongside its divisions in ...
In modern astronomical writing, all the constellations, including the 12 of the zodiac, have dedicated three-letter abbreviations, which specifically refer to constellations rather than signs. [105] The zodiac symbols are also sometimes used to represent points on the ecliptic, particularly the solstices and equinoxes.
Roman numerals: for example the word "six" in the clue might be used to indicate the letters VI; The name of a chemical element may be used to signify its symbol; e.g., W for tungsten; The days of the week; e.g., TH for Thursday; Country codes; e.g., "Switzerland" can indicate the letters CH; ICAO spelling alphabet: where Mike signifies M and ...
The three-letter abbreviation for the constellation, as adopted by the International Astronomical Union in 1922, is "Aps". [9] The official constellation boundaries, as set by Belgian astronomer Eugène Delporte in 1930, [ b ] are defined by a polygon of six segments ( illustrated in infobox ).
Lyra (Latin for 'lyre', from Ancient Greek: λύρα; pronounced: / ˈ l aɪ r ə / LY-rə) [2] is a small constellation.It is one of the 48 listed by the 2nd century astronomer Ptolemy, and is one of the modern 88 constellations recognized by the International Astronomical Union.
Variable stars that do not have Bayer designations are assigned designations in a variable star scheme that superficially extends the Bayer scheme with uppercase Latin letters followed by constellation names, starting with single letters R to Z, and proceeding to pairs of letters. Such designations mark them as variable stars.