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Hydrus
From Wikipedia, the free encyclopedia
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| Abbreviation: | Hyi |
| Genitive: | Hydri |
| Symbology: | the Sea Snake |
| Right ascension: | 0h05m - 4h40m h |
| Declination: | −58° - −82° |
| Area: | 243 sq. deg. (61st) |
| Main stars: | 3 |
| Bayer/Flamsteed stars: | 19 |
| Stars with known planets: | 2 |
| Bright stars: | 3 |
| Nearby stars: | 1 |
| Brightest star: | beta Hyi (2.82m) |
| Nearest star: | alpha Hyi (24.37 ly) |
| Messier objects: | none |
| Meteor showers: | none |
| Bordering constellations: | Dorado Eridanus Horologium Mensa Octans Phoenix (corner) Reticulum Tucana |
| Visible at latitudes between +8° and −90° Best visible at 21:00 (9 p.m.) during the month of November |
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Hydrus (IPA: /ˈhʌɪdrəs/, Latin: Hydra, also referred to as "male Hydra" or "little Hydra") is a minor southern constellation. The constellation was one of twelve constellations created by Pieter Dirkszoon Keyser and Frederick de Houtman between 1595 and 1597, and it first appeared in Johann Bayer's Uranometria of 1603.
It should not be confused with Hydra.
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Hydrus was discovered circa 1595 by two Dutch navigators, Pieter Dirkszoon Keyser and Frederick de Houtman. It was charted in Johann Bayer's Uranometria in 1603.[1]
There is no mythology commonly associated with Hydrus because it was not visible to the ancient Greeks. Hydrus was not discovered until modern times due to its position in the sky.
- IC 1717
| The 88 modern Constellations |
|---|
| Andromeda • Antlia • Apus • Aquarius • Aquila • Ara • Aries • Auriga • Boötes • Caelum • Camelopardalis • Cancer • Canes Venatici • Canis Major • Canis Minor • Capricornus • Carina • Cassiopeia • Centaurus • Cepheus • Cetus • Chamaeleon • Circinus • Columba • Coma Berenices • Corona Australis • Corona Borealis • Corvus • Crater • Crux • Cygnus • Delphinus • Dorado • Draco • Equuleus • Eridanus • Fornax • Gemini • Grus • Hercules • Horologium • Hydra • Hydrus • Indus • Lacerta • Leo • Leo Minor • Lepus • Libra • Lupus • Lynx • Lyra • Mensa • Microscopium • Monoceros • Musca • Norma • Octans • Ophiuchus • Orion • Pavo • Pegasus • Perseus • Phoenix • Pictor • Pisces • Piscis Austrinus • Puppis • Pyxis • Reticulum • Sagitta • Sagittarius • Scorpius • Sculptor • Scutum • Serpens • Sextans • Taurus • Telescopium • Triangulum • Triangulum Australe • Tucana • Ursa Major • Ursa Minor • Vela • Virgo • Volans • Vulpecula |
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