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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]
This is the list of notable stars in the constellation Hydra, sorted by decreasing brightness. Name B F G. Var HD HIP RA Dec vis. mag. ... have two planets (b and c ...
In December 2007, a team led by Johny Setiawan of the Max Planck Institute for Astronomy in Heidelberg, Germany announced discovery of a planet orbiting TW Hydrae, dubbed "TW Hydrae b" with a minimum mass around 1.2 Jupiter masses, a period of 3.56 days, and an orbital radius of 0.04 astronomical units (inside the inner rim of the ...
NGC 3311 is a super-giant [2] elliptical galaxy [3] (a type-cD galaxy) [4] [3] located about 190 million light-years away [5] in the constellation Hydra. [6] The galaxy was discovered by astronomer John Herschel on March 30, 1835.
NGC 3200 is a large spiral galaxy located in the constellation Hydra. Its velocity relative to the cosmic microwave background is 3,877 ± 25 km/s, which corresponds to a Hubble distance of 57.2 ± 4.0 Mpc (~187 million ly). NGC 3200 was discovered by American astronomer Edward Singleton Holden in 1882. [1]
NGC 5135 is a barred spiral galaxy located in the constellation Hydra. It is located at a distance of about 200 million light years from Earth. It was discovered by John Herschel on May 8, 1834. [ 2 ]
NGC 3316 is a barred lenticular galaxy [2] [3] located about 190 million light-years away [2] in the constellation Hydra. [4] The galaxy was discovered by astronomer John Herschel on March 26, 1835. [ 5 ] [ 6 ] NGC 3316 is a member of the Hydra Cluster , [ 7 ] and appears to have a small companion galaxy known as HCC 15.
HD 122430 is single star [6] in the equatorial constellation of Hydra. It has an orange hue and is faintly visible to the naked eye with an apparent visual magnitude of 5.47. [2] The star is located at a distance of 105.6 light years from the Sun based on parallax. This is an aging giant star with a stellar classification of K2–3III. [3]