Upsilon Cygni (HIP 105138), a blue-white main-sequence star in Stars

Upsilon Cygni (HIP 105138) is a blue-white main-sequence star (B2.5Ve) in Stars, 633 light years from Earth at magnitude 4.41.

Ashland Astronomy Studio October 3, 2026 Star

Upsilon Cygni (HIP 105138)

Upsilon Cygni is a blue-white main-sequence star in the constellation Stars. At 633 light years away, it shines at an apparent visual magnitude of 4.41. Iron abundance: -0.36 (44% of the Sun). Galactic velocity: 11.0 km/s. Galactic orbit: 24,034 32,257 light years from galactic center.

Sky position: RA 21h 17m, Dec +34° 53.8'

Spectral type: B2.5Ve

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