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Boötes (/ b oʊ ˈ oʊ t iː z / boh-OH-teez) is a constellation in the northern sky, located between 0° and +60° declination, and 13 and 16 hours of right ascension on the celestial sphere. The name comes from Latin : Boōtēs , which comes from Ancient Greek : Βοώτης , romanized : Boṓtēs ' herdsman ' or ' plowman ' (literally ...
A map of the Boötes Void. The Boötes Void (/ b oʊ ˈ oʊ t iː z / boh-OH-teez) (colloquially referred to as the Great Nothing) [1] is an approximately spherical region of space found in the vicinity of the constellation Boötes, containing only 60 galaxies instead of the 2,000 that should be expected from an area this large, hence its name.
Constellation Notes 1 1.5 h −50° 3000 km/s 30 × 30 × 40 Phoenix/Eridanus: Located just behind the galaxy concentration in Eridanus-Fornax-Dorado 2 21 h −25°
Arcturus is the brightest star in the northern constellation of Boötes.With an apparent visual magnitude of −0.05, [2] it is the fourth-brightest star in the night sky, and the brightest in the northern celestial hemisphere.
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.
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.
A rare cosmic eruption is expected to occur in the Milky Way in the coming months — an outburst so bright that a “new” star will seemingly appear for a short time in the night sky.
Delta Boötis, Latinized from δ Boötis, is a double star in the northern constellation of Boötes, forming the easternmost member of the constellation's kite-shaped asterism of brighter stars. [14] Based upon parallax measurements, it is located at a distance of approximately 120.5 light-years (36.9 parsecs) from the Earth. [1]