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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]
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]
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.
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 5495 is a very large barred spiral galaxy located in the constellation Hydra. [1] [2] Its speed relative to the cosmic microwave background is 6,989 ± 20 km/s, which corresponds to a Hubble distance of 103.1 ± 7.2 Mpc (∼336 million ly). [3] [4] NGC 5495 was discovered by British astronomer John Herschel in 1834.
NGC 2935 is a large intermediate spiral galaxy located in the constellation Hydra. Its speed relative to the cosmic microwave background is 2,601 ± 23 km/s, which corresponds to a Hubble distance of 38.4 ± 2.7 Mpc (~125 million ly). It was discovered by German-British astronomer William Herschel on 20 March 1786. [1] [2]
Eta Hydrae (η Hydrae) is a star in the equatorial constellation of Hydra. With an apparent visual magnitude of 4.3, [2] it is visible to the naked eye. However, it is the faintest of the five stars that form the "head" of the hydra. [11] Based upon an annual parallax shift of 5.56 mas, [1] it is located roughly 590 light years from the Sun.
NGC 3336 is a barred spiral galaxy [2] [3] located about 190 million light-years away [4] in the constellation Hydra. [2] It was discovered by astronomer John Herschel on March 24, 1835. [ 5 ] [ 3 ] NGC 3336 is a member of the Hydra Cluster .