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The official constellation boundaries, as set by Belgian astronomer Eugène Delporte in 1930, are defined by a polygon of 16 segments. In the equatorial coordinate system, the right ascension coordinates of these borders lie between 13 h 36.1 m and 15 h 49.3 m, while the declination coordinates stretch from +7.36° to +55.1°. [2]
Iota Boötis (ι Boo, ι Boötis) is a member of a binary star system in the constellation Boötes, approximately 96 light-years from Earth. It has the traditional name Asellus Secundus / ə ˈ s ɛ l ə s s ɪ ˈ k ʌ n d ə s / (Latin for "second donkey colt") and the Flamsteed designation 21 Boötis. The companion is HD 234121, a K0 main ...
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.
While the BOOTES-1 station in Spain is devoted to wide-field astronomy, the additional stations (BOOTES-2 in Spain, BOOTES-3 in New Zealand, BOOTES-4 in China, BOOTES-5 in Mexico, BOOTES-6 in South Africa and BOOTES-7 in Chile) include a similar setup (hardware and software): the 0.6m diameter robotic telescope, the EMCCD camera at the ...
Xi Boötis, Latinised from ξ Boötis, is a binary star [10] system located at a distance of 22 light-years away from Earth. It is the nearest visible star in the constellation Boötes . The brighter, primary component of the pair has a visual magnitude of 4.70, making it visible to the naked eye.
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. [15] 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") [15] and the Flamsteed designation 23 Boötis.
Gamma Boötis, Latinised from γ Boötis, is a binary star [12] system in the northern constellation of Boötes the herdsman, forming the left shoulder of this asterism. [13] The primary component has the proper name Seginus / s ɪ ˈ dʒ aɪ n ə s / [citation needed], the traditional name of the Gamma Bootis system. [14]
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.