Star profile

Nu 1 Coronae Borealis

Cool red star

3D likeness based on its real data · class M · ~3,200 K

What is Nu 1 Coronae Borealis

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.

Where it is and when to see it

Nu 1 Coronae Borealis lies in the northern celestial hemisphere. It is visible to the naked eye under a dark sky. Its best month of the year is May: the Sun sits at the opposite point of the sky and the star culminates around midnight. How high it climbs above the horizon depends on the latitude you watch from.

Find it on the sky map

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The signature wall

Stelvia's sky works like a signature wall: anyone can leave their name and a message on a real star, and that signature goes up on the map for everyone to read. Signing is free.

A signature without a lock can be replaced by someone else's. The lock makes the signature permanent and lets you choose a symbolic name for the star, always shown next to the star's catalogue identifier. How the lock works

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Write my signature

A public signature from a real person. The chosen name is a symbolic denomination within Stelvia, with no official standing or IAU recognition: the sky is not for sale and belongs to no one.

Astronomical data for Nu 1 Coronae Borealis

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

A symbolic commemorative gift: neither the signature nor the chosen name implies ownership of the star or recognition by the IAU.

Other stars in Corona Borealis

Corona Borealis has 26 stars in Stelvia's catalogue. Here are a few of them.

See all 26 stars in Corona Borealis