The major stars of the Leo constellation are Ras Elased Australis, Ras Elased Borealis, Regulus, Algieba, Zosma, Chort, and Denebola
Leo's symbol is a lion and it's right ascension is 11 and it's declination +15 and the area is 947 sq. degrees. It is said that the reason the symbol is a lion is becasue Hercule's killed a lion and threw it into the sky. It is visible in the northern hemisphere in the midsummer.
Ras Elased Australis has a right ascension of 9h 45m 51s, a declination of +23* 46' 27", an apparent magnitude of 2.97, a spectral class of G1II, and is 251 light years away from the earth.
Ras Elased Borealis has a right ascension of 9h 52m 45s, a declination of +26* 0' 25", an apparent magnitude os 3.88, a spectral class of K2IIICN1Ca1, and is 133 light years from the earth.
Regulus has a right ascension of 10h 8m 22s, a right declination of +11* 58' 1", an apparent magnitude of 1.41, an absolute magnitude of -0.52, a spectral class B7V, and it is 77 light years away from the earth.
Algieba has a right ascension of 10h 19m 58s, a declination of +19* 50' 29", an apparent magnitude of 2.01, an absolute magnitude of -0.92, a spectral class K1-IIIbFe-0.5, and it is 126 light years away from the earth.
Zosma has a right ascension of 11h 14m 6s, a declination of +20* 31' 25", an apparent magnitude of 2.56, an absolute magnitude of 1.29, a spectral class of A4V, and is 57.7 light years away from the earth.
Chort has a right ascension of11h 14m 14s, a declination of +15* 25' 46", and apparent magnitude of 3.33, a spectral class of A2v, and is 170 light years away from the earth.
Denebola has a right ascension of 11h 49m 3s, a declination of +14* 34' 19", an apparent magnitude of 2.13, an absolute magnitude of 1.97, a spectral class of A3V, and is 36.2 light years from the earth.
Denbola is the second brightest star in the Leo constellation, it is an A class star and is located 36 light years from earth! Denebola has a luminosity that is about 12 times that of the sun's. The right ascension is 11h 49m 3s, the declination is +14 34' 19" and the apparent magnitude is 2.13.
The Cartwheel galaxy is a lenticular galaxy and was discovere by Fritz Zwicky in 1941. The apparent magnitude is 15.2, the right ascension is 37m 41s and the declination is -33* 42' 59". The estimated mass is 2.9-4.8x10^9. As you can see in the picture below there is the center ball with the luminous blue ring around it and you can see the 'spokes' of the cartwheel soing out from the center to the outer ring. Hence the name.
Regulus is the brightest star in the leo constellation and is also one of the brightest stars in the sky. It is about 77.5 light years from earth with a right ascension of 10 hours, 8 minutes, and 22 seconds and a declination of +11* 58' 2". The apparent magnitude is 1.35 which is what makes it so bright. It is a multiple star system that is made up of four stars. Also regulus is latin for prince or little king but it is also known as Qalb Al Asad meaning heart of the lion in arabic.
Algieba is a binary star system in the Leo constellation. It has a rights ascension of 10 hours, 19 minutes, and 58 seconds and a declination of +19* 50' 30". The apparent magnitude of Algieba is 1.98 so like regulus it is a very bright star. Algieba appears in the mane of Leo.
