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Hydra is the largest of the 88 modern constellations, measuring 1303 square degrees, and also the longest at over 100 degrees. Its southern end borders Libra and Centaurus and its northern end borders Cancer. [1] It was included among the 48 constellations listed by the 2nd century astronomer Ptolemy.
In 2016, the International Astronomical Union (IAU) organized a Working Group on Star Names (WGSN) [2] to catalog and standardize proper names for stars. The WGSN's first bulletin, dated July 2016, [3] included a table of 125 stars comprising the first two batches of names approved by the WGSN (on 30 June and 20 July 2016) together with names of stars adopted by the IAU Executive Committee ...
Hydra is the largest constellation, covering more than 1 ⁄ 32 of the night sky and 19 times the area of Crux, the smallest constellation.. The International Astronomical Union (IAU) designates 88 constellations of stars.
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]
This is the list of notable stars in the constellation Hydra, sorted by decreasing ... • Notes = Common name(s) or alternate name(s); comments; notable properties ...
The WGSN approved the name Ukdah for Iota Hydrae on 1 June 2018 and it is now so included in the List of IAU-approved Star Names. [ 8 ] In Chinese , 星宿 ( Xīng Sù ), meaning Star or asterism , refers to an asterism consisting of ι Hydrae, Alphard , τ 1 Hydrae , τ 2 Hydrae , 26 Hydrae , 27 Hydrae , HD 82477 and HD 82428 . [ 14 ]
Alphard / ˈ æ l f ɑːr d /, [10] designated Alpha Hydrae (α Hydrae, abbreviated Alpha Hya, α Hya), is the brightest star in the constellation of Hydra. It is a single giant star , cooler than the Sun but larger and more luminous.
Pages in category "Hydra (constellation)" The following 200 pages are in this category, out of approximately 203 total. This list may not reflect recent changes.