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Loading contentCampbell's Hydrogen Star is a wolf-rayet star in the constellation Cygnus (Cygni).
Wolf-Rayet. Evolved, massive stars shedding their outer layers in powerful stellar winds. Such stars have surface temperatures around ≥ 30,000 K and appear blue to the eye.
| Spectral type | WC... |
| Apparent magnitude | 10 |
| Absolute magnitude | -10 |
| Luminosity (Sun = 1) | 870,964 |
| Colour index (B−V) | -0.013 |
Values are real catalogue data; fields without a reliable value are omitted, never estimated.
A Wolf-Rayet star is a hot, evolved, massive star driving away its outer layers in fierce stellar winds, often a prelude to a supernova.
Facts on this topic will be cited from these primary and reference sources.
Aggregated, openly-licensed star catalogue combining Hipparcos, the Yale Bright Star Catalogue, and the Gliese Catalogue of Nearby Stars.
High-precision parallax, magnitude, and position for ~118,000 stars.