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Sagitta is a dim but distinctive constellation in the northern sky. Its name is Latin for 'arrow', not to be confused with the significantly larger constellation Sagittarius 'the archer'. It was included among the 48 constellations listed by the 2nd-century astronomer Ptolemy , and it remains one of the 88 modern constellations defined by the ...
In geometry, the sagitta (sometimes abbreviated as sag [1]) of a circular arc is the distance from the midpoint of the arc to the midpoint of its chord. [2] It is used extensively in architecture when calculating the arc necessary to span a certain height and distance and also in optics where it is used to find the depth of a spherical mirror ...
Pontia Postumia, murdered by Octavius Sagitta, tribune of the plebs in AD 58, having broken off their engagement. Sagitta was banished to an island. [46] Pontia, the wife of Petronius, who was put to death as one of the conspirators against Nero. Pontia poisoned her children, and opened her veins. [47] [48]
Sagitta is a constellation, named after the Latin word for arrow. Sagitta may also refer to: Sagitta, a genus of chaetognaths in the class Sagittoidea; Sagitta (geometry), the depth of an arc; Sagitta (optics), a measure of the glass removed to yield an optical curve; Ligularia sagitta, a plant species
Greek mythology associates Sagittarius with the centaur Chiron, who mentored Achilles, a Greek hero of the Trojan War, in archery. [ 3 ] Sagittarius, the half human and half horse, is the centaur of mythology, the learned healer whose higher intelligence forms a bridge between Earth and Heaven.
For help with the literary English pronunciations, see the pronunciation key. There is considerable diversity in how Latinate names are pronounced in English. For traditions closer to the original, see Latin spelling and pronunciation.
Alpha Sagittae, formally named Sham / ˈ ʃ æ m /, [11] [12] is a single [13] star in the northern constellation of Sagitta. Alpha Sagittae is the Bayer designation, which is latinized from α Sagittae and abbreviated Alpha Sge or α Sge. It is visible to the naked eye as a yellow-hued star with an apparent visual magnitude of +4.38. [2]
Gamma Sagittae, Latinized from γ Sagittae, is the brightest star in northern constellation of Sagitta. A single star, [13] it is visible to the naked eye with an apparent visual magnitude of +3.47. [2] Based upon an annual parallax shift of 12.62 mas as seen from Earth, it is located about 288 light-years from the Sun. [1]