Boötes (The Herdsman) Constellation
Boötes (pronounced boʊˈoʊtiːz) is the Latin name of a large constellation (in fact it extends itself for about 51 degrees across the sky) situated north of the celestial equator. As such, it is more easily visible from the northern hemisphere.
In English language this constellation is also known as "The Herdsman" while in astronomical texts and literature this constellation is often abbreviated as "Boo" (according to the standard of the International Astronomical Union - IAU) or as "Boot" (according to a naming convention used by NASA).
The Latin genitive of the constellation name is "Boötis" (pronounced boʊˈoʊtɪs) and it is used to identify some of the brightest stars in this constellation based on the Bayer or Flamsteed star naming convention. For instance: α Boötis (the brightest star of Boötes based on the Bayer catalog); or 23 Boötis (the 23th star in the constellation of Boötes based on the Flamsteed catalog).
Sky Chart of Boötes Constellation
Here we provide a simplified sky chart of the Boötes constellation. Alternatively it is possible to locate Boötes in the night sky using our Online Interactive Planetarium.
Visibility of Boötes Constellation
Today's Boötes rise, transit and set times from Greenwich, United Kingdom are the following (all times relative to the local timezone Europe/London):
The rise and set times provided here are just directional indications and they refer to a point approximately placed at the center of the constellation. In case of very large constellations (like Boötes actually is) these times can have little relevance.
Bright Stars in Boötes Constellation
The table below lists the top 20 brightest stars in the Boötes constellation. See also the complete list of 151 stars brighter than magnitude 6.5 (approximate) in the constellation of Boötes. Click on each star to see more details about it.
|HR Number(*)||Star designation||Proper name||Visual magnitude||Color||Notes|
|HR5435||γ Boötis||Seginus||3.03||⬤||Variable; Multiple;|
|HR5681||δ Boötis||3.47||⬤||Variable; Double;|
|HR5429||ρ Boötis||3.58||⬤||Variable; Double;|
|HR5404||θ Boötis||4.05||⬤||Variable; Double;|
|HR5733||μ1 Boötis||Alkalurops||4.31||⬤||Variable; Multiple;|
|HR5478||ζ Boötis||4.43||⬤||Variable; Multiple;|
|HR5447||σ Boötis||4.46||⬤||Variable; Multiple;|
|HR5185||τ Boötis||4.5||⬤||Variable; Double;|
|HR5329||κ2 Boötis||4.54||⬤||Variable; Double;|
|HR5544||ξ Boötis||4.55||⬤||Variable; Multiple;|
|HR5350||ι Boötis||4.75||⬤||Variable; Multiple;|
|HR5618||44 Boötis||4.76||⬤||Variable; Double;|
|...go to the complete list of 151 bright stars in the constellation of Boötes|
(*) HR stands for Harvard Revised Bright Star Catalogue, which is also known as the Yale Catalogue of Bright Stars.
Deep Sky Objects in Boötes Constellation
The table below lists the 20 brightest deep sky objects in the Boötes constellation. See also the complete list of 509 deep sky objects in the constellation of Boötes. The list includes objects from the Messier, New General Catalogue (NGC) and Index Catalogue (IC).