However, it is of fairly uniform brightness throughout. Struve 1270 (Σ1270) consists of a pair of stars, magnitudes 6.4 and 7.4. It is also associated with the monster Hydra, with its many heads, killed by Hercules, represented in another constellation. All rights reserved. Draco is a constellation in the far northern sky. [1] N Hydrae (N Hya) is a pair of stars of magnitudes 5.8 and 5.9. The constellation was introduced in 1612 or 1613 by Petrus Plancius. Notable stars include Alpha Centauri, the nearest star system to the Solar System, its neighbour in the sky Beta Centauri, and V766 Centauri, one of the largest stars yet discovered. For more in depth work sheets on constellations. [1] It was included among the 48 constellations listed by the 2nd century astronomer Ptolemy.It is commonly represented as a water snake.It is located in the southern hemisphere. It was one of the 48 constellations listed by the 2nd century astronomer Ptolemy, and it remains one of the 88 modern constellations. [7], Despite its size, Hydra contains only one moderately bright star, Alphard, designated Alpha Hydrae. R Hydrae is a Mira variable star 2000 light-years from Earth; it is one of the brightest Mira variables at its maximum of magnitude 3.5. Eridanus is a constellation in the southern celestial hemisphere. Supernova SN 185 appeared in Circinus in 185 AD and was recorded by Chinese observers. Hydra contains several stars brighter than magnitude 4. [1], There are several globular clusters in Hydra. Located close to the stars forming the old constellation of the ship Argo Navis, Antlia is completely visible from latitudes south of 49 degrees north. [20] NGC 5068 may be a member of the M83 group, but its identity is disputed. A smaller sister to the Milky Way, it is a grand design spiral galaxy 40,000 light-years across. Key Data Bordering Constellations: Hydra is bordered by constellations Virgo , Antila , Cancer , Sextans , Canis Minor , Pyxis , Centaurus , Puppis , Corvus , Monoceros , Crater , Leo , Libra & Lupus . This prevented the heads from growing back. Hydra includes GJ 357, an M-type main sequence star located only 31 light-years from the Solar System. It has a minimum magnitude of 6.6 and a maximum magnitude of 4.2; its period is 115 days.[1]. Download questions about the Hydra Constellation here: Hyrda Constellation (answers are on this page), Teachers. [1]. The etymology for these two constellations are intertwined. [9] The primary is a yellow star of magnitude 3.4 and the secondary is a blue star of magnitude 6.7. [1] It is easily observed in skies south of 40°N latitude, found by using 1, 2, 3, and 4 Centauri as guide stars. The other main named star in Hydra is Sigma Hydrae (σ Hydrae), which also has the name of Minchir, [10] from the Arabic for snake's nose. Every time one was cut off two would grow in its place. Symbolism: Hydra is also known as ‘The Water Snake’. [10], Hydra is also home to several variable stars. [22] [23], The Sigma Hydrids peak on December 6 and are a very active shower with an unknown parent body. One myth associates it with a water snake that a crow served Apollo in a cup when it was sent to fetch water; Apollo saw through the fraud, and angrily cast the crow, cup, and snake, into the sky. The constellations Pavo, Grus, Phoenix and Tucana are collectively known as the "Southern Birds". Bordering Constellations: Leo, Hydra, Crater The Myth Behind the Constellation Sextans Sextans, “The Sextant” is another modern constellation created by Polish astronomer Johannes Hevelius in the late seventeenth century. Hydrobius is the third brightest star with a magnitude of 3.11. At magnitude 4.54, it is rather dim. This constellation also contains a number of dim deep-sky objects that can only be seen with large telescopes. The name of Nakshatra (Ashlesha) became the proper name of Epsilon Hydrae since 1 June 2018 by IAU. It is a yellow-white subdwarf star that lies some 167 light years from our solar system. Cygnus was among the 48 constellations listed by the 2nd century astronomer Ptolemy, and it remains one of the 88 modern constellations. [20] ESO 510-G13 is a warped spiral galaxy located 150 million light-years from Earth. Alphard is the brightest star in Hydra. [6] In Chinese astronomy, the stars that correspond to Hydra are located within the Vermilion Bird and the Azure Dragon. Its name is Latin for "horned goat" or "goat horn" or "having horns like a goat's", and it is commonly represented in the form of a sea goat: a mythical creature that is half goat, half fish. Located north of the celestial equator, it is named for Andromeda, daughter of Cassiopeia, in the Greek myth, who was chained to a rock to be eaten by the sea monster Cetus. Camelopardalis is a large but faint constellation of the northern sky representing a giraffe. Gamma Hydrae is the second brightest star with a magnitude of 2.99. An area equal to 1303 square° is covered by this constellation. [1] It was included among the 48 constellations listed by the 2nd century astronomer Ptolemy. [1] NGC 5694 is a globular cluster of magnitude 10.2, 105,000 light-years from Earth. [18], There are many other galaxies located in Hydra. [24] The Alpha Hydrids are a minor shower that peaks between January 1 and 7. [1], NGC 3242 is a planetary nebula of magnitude 7.5, 1400 light-years from Earth. It had nine serpent heads, eight mortal and one immortal. Hydra has one bright binary star, Epsilon Hydrae, which is difficult to split in amateur telescopes; it has a period of 1000 years and is 135 light-years from Earth. Its name is Latin for dragon. Symbolism: Andromeda is also known as 'The Captive Princess'    History & Mythology…, Antlia is one of the 88 constellations within the celestial sphere. Dorado contains most of the Large Magellanic Cloud, the remainder being in the constellation Mensa. [3], The shape of Hydra resembles a twisting snake, and features as such in some Greek myths. [7], Despite its size, Hydra contains only one moderately bright star, Alphard, designated Alpha Hydrae. V Hydrae is an unusually vivid red variable star 20,000 light-years from Earth. [3], The shape of Hydra resembles a twisting snake, and features as such in some Greek myths. A small, faint constellation, it was defined in 1687 by the astronomer Johannes Hevelius. It may also represent the hydra from the myth of Hercules and his twelve labors.

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