Epsilon Tauri

From Freepedia

ε Tauri

Epoch J2000.0
Constellation	Taurus
Right ascension	04h 28m 37.0s
Declination	+19° 10' 49"
Distance	155 ± 6 ly (48 ± 2 pc)
Spectral type	K0III
Apparent magnitude	+3.53
Other designations
Ain, Oculus Borealus, 74 Tauri, HR 1409, HD 28305, BD+18 640, FK5 164, HIP 20889, SAO 93954, GC 5430, CCDM 04286+1911

Epsilon Tauri (ε Tau / ε Tauri) is a star in the constellation Taurus and a member of the Hyades open cluster. It has the traditional names Ain, or Oculus Borealus, both of which mean "eye".

ε Tau belongs to the spectral class K0 and has apparent magnitude +3.6. It is 155 light years away from the Sun, has a luminosity of 90 times that of the Sun and a radius of 13 times solar. The surface temperature of this star is measured at 4925 Kelvin. It has an 11th magnitude companion 182 arcseconds from the primary.

Since ε Tau lies near the plane of the ecliptic, it is sometimes occulted by the Moon and (very rarely) by planets.