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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.
Ashlesha (Sanskrit: आश्लेषा or Āśleṣā) (Tibetan: སྐར་མ་སྐག), also known as Ayilyam in Tamil and Malayalam (Tamil: ஆயில்யம், Malayalam: ആയില്യം, Āyilyaṃ), is the 9th of the 27 nakshatras in Hindu astrology. Ashlesha is also known as the Clinging Star or Nāga. [1] It is known ...
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]
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 ...
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.
Theta Hydrae, Latinized from θ Hydrae, is a binary star [8] system in the constellation Hydra.It is visible to the naked eye with an apparent visual magnitude of 3.9. [2] The star system has a high proper motion [8] with an annual parallax shift of 28.4 mas, [1] indicating a distance of about 115 light years.
In Chinese, 柳宿 (Xīng Sù), meaning Star (asterism), refers to an asterism consisting of τ 1 and τ 2 Hydrae, Alphard, ι Hydrae, 26 Hydrae, 27 Hydrae, HD 82477 and HD 82428. [3] Consequently, τ 1 and τ 2 Hydrae are known as 星宿二 ( Xīng Sù èr , English: the Second Star of Star ) and 星宿三 ( Xīng Sù sān , English: the Third ...
Zeta Hydrae (ζ Hya, ζ Hydrae) is a solitary star in the equatorial constellation of Hydra. This is a generally faint constellation, so, at an apparent visual magnitude of +3.10, [ 2 ] this is the third-brightest member after Alphard and Gamma Hydrae .