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Nu-1
Cool red starIts story
Nu-1 Coronae Borealis is a red giant of type M2: a surface of just 3,765 K gives it that deep, orange-tinged hue. With its sister Nu-2, it forms a warm-toned visual pair at the edge of the small diadem of the Northern Crown. Its light crosses 641 years of darkness before reaching the eye—an old flame in a young sky.
- Constellation
- Corona Borealis
- Apparent magnitude
- 5.20
- Distance
- 640.9 light years
- Coordinates (J2000)
- RA 245.589° · Dec 33.799°
- Catalogue
- HIP 80197 · HD 147749
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