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Star profile

45 Herculis

Variable star
3D likeness based on its real data · class B · ~15,000 K

What is 45 Herculis

45 Herculis is a blue B-type star pinned to the hero's shoulder, nearly 394 light-years from here. Its brightness will not hold steady — it ripples with the rhythm of a hot, restless atmosphere. The photon arriving tonight left the star when telescopes were still brass pieces in the cabinets of princes.

Where it is and when to see it

45 Herculis 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

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 45 Herculis

Constellation
Hercules
Apparent magnitude
5.22
Distance
393.5 light years
Coordinates (J2000)
RA 251.943° · Dec 5.247°
Catalogue
HIP 82216 · HD 151525

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

Other stars in Hercules

Hercules has 136 stars in Stelvia's catalogue. Here are a few of them.

See all 136 stars in Hercules