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Its star is a K1V-type star of apparent magnitude 12.7, far below naked-eye visibility, and smaller than the Sun at 0.78 M ☉ and 0.765 R ☉. [64] HD 131496 is also encircled by one planet, HD 131496 b. The star is of type K0 and is located 110 parsecs from Earth; it appears at a visual magnitude of 7.96.
File:Bootes_constellation_map.png licensed with Cc-by-sa-3.0-migrated, GFDL 2004-12-12T17:53:04Z Alfio 1989x2559 (87905 Bytes) Bootes constellation map (bigger image) 2004-12-12T12:13:57Z Alfio 332x427 (17568 Bytes) Bootes constellation map; Uploaded with derivativeFX
Arcturus is the brightest star in the constellation of Boötes. With an apparent visual magnitude of −0.05, Arcturus is the brightest star in the northern celestial hemisphere and the fourth-brightest star in the night sky, [ 14 ] after Sirius (−1.46 apparent magnitude), Canopus (−0.72) and α Centauri (combined magnitude of −0.27).
Epsilon Boötis (ε Boötis, abbreviated Epsilon Boo, ε Boo), officially named Izar (/ ˈ aɪ z ɑːr / EYE-zar), [16] is a binary star in the northern constellation of Boötes.The star system can be viewed with the unaided eye at night, but resolving the pair with a small telescope is challenging; an aperture of 76 mm (3.0 in) or greater is required.
This is the list of notable stars in the constellation Boötes, sorted by decreasing brightness. The genitive for stars in this constellation is Boötis and the IAU abbreviation is Boo. Hence, η Boo is Eta Boötis.
Kappa Boötis (κ Boo, κ Boötis) is a double star in the constellation Boötes. It has the traditional name Asellus Tertius / ə ˈ s ɛ l ə s ˈ t ɜːr ʃ i ə s / ( Latin for "third donkey colt") [ 13 ] [ 14 ] and the Flamsteed designation 17 Boötis.
Theta Boötis, Latinized from θ Boötis, is a star in the northern constellation of Boötes the herdsman, forming a corner of the upraised left hand of this asterism. [13] It has the traditional name Asellus Primus (/ ə ˈ s ɛ l ə s ˈ p r aɪ m ə s /; Latin for "first donkey colt") [13] and the Flamsteed designation 23 Boötis.
Beta Boötis, Latinized from β Boötis, and also named Nekkar / ˈ n ɛ k ɑːr /, [10] is a star in the northern constellation of Boötes. It has an apparent visual magnitude of 3.5, [2] making it one of the brighter members of the constellation. In the modern constellation, it marks the head of Boötes the herdsman. [11]
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