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NGC 3621 is a field spiral galaxy about 22 Mly (6.7 Mpc) away [2] [5] in the equatorial constellation of Hydra. It was discovered by German-British astronomer William Herschel on 17 February 1790. [6] NGC 3621 is comparatively bright and can be well seen in moderate-sized telescopes.
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 2848 is an intermediate spiral galaxy in the constellation of Hydra. Its velocity with respect to the cosmic microwave background is 2,361 ± 23 km/s, which corresponds to a Hubble distance of 34.82 ± 2.46 Mpc (∼114 million light-years). [1] It was discovered by German-British astronomer William Herschel on 31 December 1785.
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 2835 is an intermediate spiral galaxy located in the constellation Hydra. It is located at a distance of circa 35 million light years from Earth, which, given its apparent dimensions, means that NGC 2835 is about 65,000 light years across. It was discovered by Wilhelm Tempel on April 13, 1884. [3]
NGC 2642 is a barred spiral galaxy in the constellation of Hydra. Its velocity with respect to the cosmic microwave background is 4632 ± 21 km/s, which corresponds to a Hubble distance of 68.32 ± 4.79 Mpc (∼223 million light-years). [1] It was discovered by British astronomer John Herschel on 19 February 1830. [2]
NGC 5260 is a barred spiral galaxy in the constellation of Hydra. Its velocity with respect to the cosmic microwave background is 6789 ± 21 km/s, which corresponds to a Hubble distance of 100.13 ± 7.02 Mpc (∼327 million light-years). [1] It was discovered by American astronomer Lewis Swift on 6 April 1885. [2]
NGC 2937 is an elliptical galaxy located in the constellation Hydra. Its velocity relative to the cosmic microwave background is 105.1 ± 7.4 km/s, which corresponds to a Hubble distance of 105.1 ± 7.4 Mpc (∼343 million ly). [1] NGC 2937 was discovered by German astronomer Albert Marth in 1864.