Brooke Strine Cheyanne Havermahl Jacob Barnett & William Thornton
Constellation
The Constellation Boötes and where Arcturus is located in it.
The constellation that Arcturus is in is Boötes. Arcturus is the brightest star in this constellation and also in the northern celestial hemisphere.
Mass and Magnitude
This is Arcturus compared to the Sun.
Apparent magnitude: .15
Absolute magnitude: -11
Arcturus mass is 4 times of the suns is which also means Arcturus is 18 times larger than the sun.
Location, Angle, and Seasons
This is Arcturus in the night sky.
Arcturus first rises in mid January and we can see it all the way up to Late August when it sets. During the 4th of July at 12:00AM we can see it South West in the sky at a 43º angle.
Color and Temperature
The color of Arcturus is red-orange and its surface temperature is 4,290º K.
Distance and Luminosity
This is what Arcturus looks like.
Arcturus is 36.71 light years (1.1 a.u.) away It is also 105 times more luminescent then the sun.
Phase of life and Spectral Class
HR Diagram showing Brightness and Surface Temp.
Arcturus phase of life it is in is a red giant. It's spectral and luminosity type is K1.5 lllpe.
Nearby Objects Comparison
This is Arcturus compared to the Sun, Sirius, and Pollux.
Fun Fact
Diagram of whats burning in the core.
Arcturus is currently fusing helium instead of hydrogen but is somewhat brighter than a normal stable helium star.