constellation in the northern celestial hemisphere
Boötes, pronounced with both 'O's as 'boötez', is one of the 88 modern constellations in the northern sky. The name is from the Greek word Βοώτης, which means herdsman – someone who takes care of animals.
|Area||907 sq. deg. (13th)|
|Main stars||7, 15|
|Stars with planets||9|
|Stars brighter than 3.00m||3|
|Stars within 10.00 pc (32.62 ly)||3|
|Brightest star||Arcturus (α Boo) (−0.04m)|
|Visible at latitudes between +90° and −50°.|
Best visible at 21:00 (9 p.m.) during the month of June.
Other designations: Arctophylax
The constellation's shape is like a kite. Boötes has the third brightest star in the night sky, called Arcturus (α Bootis). The astronomer Ptolemy listed it in the 2nd century when he made a list of 48 constellations.
The Cloverleaf quasar is visually in Bootes.
- α Bootis (Arcturus) is the brightest and most important star of the constellation, with a magnitude of -0.04, the 3rd brightest star of the sky. It is an orange giant star
- β Bootis (Nekkar), yellow giant with magnitude 3.49 and 219 light years from the Earth
- y Bootis (Ceginus), Delta Scuti variable with magnitude 3,04
- δ Bootis (Princeps), another yellow giant.
- NGC 5248, spiral galaxy, 10º south of Arcturus
- NGC 5466, globular cluster, 9º northwest of Arcturus, near M3, a globular cluster in the constellation Canes Venatici.
- ↑ 1.0 1.1 Thompson, Robert Bruce; Thompson, Barbara Fritchman (2007). Illustrated Guide Astronomical Wonders. O'Reilly Books. ISBN 978-0-596-52685-6.
- ↑ Jim Kaler. "Boötes". Stars. Retrieved 27 January 2013.
- ↑ Fuchs, Jim. "Constellation History". Modern Constellations. Archived from the original on 25 May 2012. Retrieved 27 January 2013.