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Star profile

45 Ophiuchi

3D likeness based on its real data · class F · ~6,500 K

What is 45 Ophiuchi

One hundred and eleven light-years away, 45 Ophiuchi burns with the yellow-white glow of an F-type subgiant beginning to swell, shining nearly twenty times brighter than the Sun. Ophiuchus, the great serpent-bearer, carries it on his southern flank, right along the blurred border where his stars dissolve into those of Scorpius. The light reaching us tonight set out around the time the first radio antennas were being raised on Earth.

Where it is and when to see it

45 Ophiuchi lies in the southern 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

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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

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.

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 45 Ophiuchi

Constellation
Ophiuchus
Apparent magnitude
4.28
Distance
111.6 light years
Coordinates (J2000)
RA 261.839° · Dec -29.867°
Catalogue
HIP 85423 · HD 157919

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