109 Herculis (HIP 90139), a orange supergiant star in Stars

109 Herculis (HIP 90139) is a orange supergiant star (K2IIIab) in Stars, 119 light years from Earth at magnitude 3.85.

Ashland Astronomy Studio October 3, 2026 Star

109 Herculis (HIP 90139)

109 Herculis is a orange supergiant star in the constellation Stars. At 119 light years away, it shines at an apparent visual magnitude of 3.85. Iron abundance: -0.06 (87% of the Sun). Galactic velocity: 79.5 km/s. Galactic orbit: 14,909 24,087 light years from galactic center.

Sky position: RA 18h 23m, Dec +21° 46.2'

Spectral type: K2IIIab

← Back to all stars

// Fade in · only sidebar boxes, never the main content if('IntersectionObserver' in window){var io=new IntersectionObserver(function(es){es.forEach(function(en){if(en.isIntersecting){en.target.style.opacity='1';en.target.style.transform='none';io.unobserve(en.target);}});},{threshold:.05});document.querySelectorAll('.side__box').forEach(function(el){el.style.opacity='0';el.style.transform='translateY(10px)';el.style.transition='opacity .4s ease,transform .4s ease';io.observe(el);});}