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Star profile

37 Ophiuchi

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

What is 37 Ophiuchi

37 Ophiuchi is an M-type red giant more than a thousand light-years away, meaning its intrinsic brightness must be enormous to remain visible to the naked eye from such a distance. It hangs in vast Ophiuchus, the serpent-bearer that embraces the celestial equator and through which the Sun passes each November. Its light has been travelling since before the first European cathedrals were built.

Where it is and when to see it

37 Ophiuchi lies in the northern celestial hemisphere. It is visible to the naked eye under a dark sky. Its best month of the year is June: 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

It opens in your browser. Free, no account, nothing to install.

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

If you don't have an account yet, we'll ask for an email to confirm it's you: we send you a link and that's it, no password.

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 37 Ophiuchi

Constellation
Ophiuchus
Apparent magnitude
5.32
Distance
1091.0 light years
Coordinates (J2000)
RA 258.116° · Dec 10.585°
Catalogue
HIP 84177 · HD 155644

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

Other stars in Ophiuchus

Ophiuchus has 88 stars in Stelvia's catalogue. Here are a few of them.

See all 88 stars in Ophiuchus