<Li> Epsilon Leonis is a yellow giant of magnitude 3.0, 251 light - years from Earth . </Li> <Li> Zeta Leonis, called Adhafera, is an optical triple star . The brightest and only star designated Zeta Leonis, is a white giant star of magnitude 3.65, 260 light - years from Earth . The second - brightest, 39 Leonis, is widely spaced to the south and of magnitude 5.8 . 35 Leonis is to the north and of magnitude 6.0 . </Li> <Li> Iota Leonis is a binary star divisible in medium amateur telescopes; they are divisible in small amateur telescopes at their widest in the years 2053--2063 . To the unaided eye, Iota Leonis appears to be a yellow - tinged star of magnitude 4.0 . The system, 79 light - years from Earth, has components of magnitude 4.1 and 6.7 with a period of 183 years . </Li> <Li> Tau Leonis is a double star visible in binoculars . The primary is a yellow giant of magnitude 5.0, 621 light - years from Earth . The secondary is a star of magnitude 8 . 54 Leonis is a binary star 289 light - years from Earth, divisible in small telescopes . The primary is a blue - white star of magnitude 4.5 and the secondary is a blue - white star of magnitude 6.3 . </Li>

How many stars in the constellation of leo