constellation in the northern celestial hemisphere

Boötes, pronounced with both 'O's as 'boötez',[1] 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.

Symbolismthe herdsman
Right ascension15
Area907 sq. deg. (13th)
Main stars7, 15
Stars with planets9
Stars brighter than 3.00m3
Stars within 10.00 pc (32.62 ly)3
Brightest starArcturus (α Boo) (−0.04m)
Meteor showers
Visible at latitudes between +90° and −50°.
Best visible at 21:00 (9 p.m.) during the month of June.
Other designations: Arctophylax
Boötes Constellation chart

Shape change

The constellation's shape is like a kite. Boötes has the third brightest star in the night sky, called Arcturus (α Bootis).[2] The astronomer Ptolemy listed it in the 2nd century when he made a list of 48 constellations.[3]

The Cloverleaf quasar is visually in Bootes.

Main stars change

  • 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.

Deep-sky objects change

References change

  1. 1.0 1.1 Thompson, Robert Bruce; Thompson, Barbara Fritchman (2007). Illustrated Guide Astronomical Wonders. O'Reilly Books. ISBN 978-0-596-52685-6.
  2. Jim Kaler. "Boötes". Stars. Retrieved 27 January 2013.
  3. Fuchs, Jim. "Constellation History". Modern Constellations. Archived from the original on 25 May 2012. Retrieved 27 January 2013.