Hyadum I (HIP 20205), a yellow supergiant star in Stars

Hyadum I (HIP 20205) is a yellow supergiant star (G9.5IIIab CN0.5) in Stars, 161 light years from Earth at magnitude 3.65.

Ashland Astronomy Studio October 3, 2026 Star

Hyadum I (HIP 20205)

Hyadum I is a yellow supergiant star in the constellation Stars. At 161 light years away, it shines at an apparent visual magnitude of 3.65. Iron abundance: 0.12 (132% of the Sun). Galactic velocity: 47.5 km/s. Galactic orbit: 20,137 26,875 light years from galactic center.

Sky position: RA 4h 19m, Dec +15° 37.7'

Spectral type: G9.5IIIab CN0.5

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