|alpha Leonis||Regulus||magn. 1,3||RA: 10h 08m 22.35s||Dec: +11° 58' 02.0"|
|beta Leonis||Denebola||magn. 2,2||RA: 11h 49m 03.66s||Dec: +14° 34' 19.6"|
|gamma Leonis||Algieba||magn. 2,6||RA: 10h 19m 58.30s||Dec: +19° 50' 30.2"|
|delta Leonis||Zosma||magn. 2,6||RA: 11h 14m 06.48s||Dec: +20° 31' 25.5"|
|delta Leonis||magn. 3,1||RA: 09h 45m 51.08s||Dec: +23° 46' 27.2"|
|theta Leonis||Chertan||magn. 3,4||RA: 11h 14m 14.41s||Dec: +15° 25' 46.6"|
|Description||Constellation of the zodiac, through which the Sun transits from the middle of August to the middle of September. It is situated to the south of Ursa Maior.
Alpha Leonis, Regulus (that is "little king"), is a white-blue star 85 light-years away, with a light emission about one hundred and fifty times more intense than that of the Sun. But the most interesting star of the constellation is without doubt Algieba, a double composed by two orange giants of magnitude 2,3 and 3,5, which rotate round each other with a period of about 600 years, at a distance of 170 light-years from us.
Leo has a big number of galaxies: they all, however, are too weak for small instruments. The brightest galaxies are M65 (here on the left) and M66, two spiral galaxies of ninth magnitude; more weak are M95, a barred spiral galaxy, and M96, a spiral galaxy.
|The constellation represents the lion that lived in a cavern near the city of Nemea, next to Corinth. It was a fierce and invulnerable beast, since its skin couldn't be transfixed by any weapon. During his first labour, Hercules confronted and killed it by suffocating it with the strength of his arms: then the hero used the beast's claws to detach its skin, that he used as garment.|