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Serpens (Ancient Greek: Ὄφις, romanized: Óphis, lit. 'the Serpent') is a constellation in the northern celestial hemisphere.One of the 48 constellations listed by the 2nd-century astronomer Ptolemy, it remains one of the 88 modern constellations designated by the International Astronomical Union.
Ophiuchus (/ ˌ ɒ f i ˈ juː k ə s /) is a large constellation straddling the celestial equator.Its name comes from the Ancient Greek ὀφιοῦχος (ophioûkhos), meaning "serpent-bearer", and it is commonly represented as a man grasping a snake.
The Greek constellation of Hydra is an adaptation of a Babylonian constellation: the MUL.APIN includes a "serpent" constellation (MUL.DINGIR.MUŠ) that loosely corresponds to Hydra. It is one of two Babylonian "serpent" constellations (the other being the origin of the Greek Serpens), a mythological hybrid of serpent, lion and bird. [2]
Eta Serpentis, Latinized from η Serpentis, is a star in the constellation Serpens. In particular, it lies in Serpens Cauda, the snake's tail. The star has an apparent visual magnitude of 3.260, [2] making it visible to the naked eye. Parallax measurements give a distance estimate of 60.5 light-years (18.5 parsecs) from the Earth. [1]
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Theta Serpentis (θ Serpentis, abbreviated Theta Ser, θ Ser) is a triple star system in the constellation of Serpens.. It consists of a binary pair designated Theta Serpentis AB and whose two components are designated Theta 1 Serpentis or Theta Serpentis A (officially named Alya / ˈ æ l i ə /, the traditional name for the entire system) [8] [9] and Theta 2 Serpentis or Theta Serpentis B ...
5 Serpentis is a wide binary star [9] system in Serpens Caput, the western section of the equatorial constellation of Serpens. It is faintly visible to the naked eye with an apparent visual magnitude of 5.10. [2] Based upon an annual parallax shift of 39.40 ± 0.29 mas [1] as viewed from Earth's orbit, it is located 83 light years away.
The stellar classification of this star is F3V, [3] matching an F-type main-sequence star. It has 1.54 times the mass of the Sun [ 5 ] and is radiating 10 [ 2 ] times the Sun's luminosity from its photosphere at an effective temperature of 6,903 K. [ 5 ] The star has an estimated age of 1.9 billion years [ 5 ] and is spinning with a projected ...