2.77
Apparent Mag1,340
Distance (ly)O9III
Spectral Type32,000
Temperature (K)Iota Orionis, also known as Hatysa, is a massive O-type star in Orion's Sword, one of the hottest naked-eye stars.
Stellar Data
Apparent Magnitude2.77
Absolute Magnitude-5.3
Distance1,340 light-years
Spectral TypeO9III
Temperature32,000 K
Luminosity68,000 L☉
Radius15 R☉
Mass23 M☉
Right Ascension05h 35m 25.9s
Declination-05° 54′ 35.6″
ConstellationOrion
Notable Facts
- Hatysa is one of the brightest O-type stars visible to the naked eye
- It illuminates part of the Orion Nebula region
- The star is about 68,000 times more luminous than the Sun