Star profile
39 Herculis
What is 39 Herculis
39 Herculis is a yellow-white F-type star burning at 143 light-years within Hercules, the kneeling hero of the summer sky. Slightly hotter and more luminous than the Sun, it shares its sky with the famous globular cluster M13, one of the densest in the northern hemisphere. Its light looks onto a constellation through which the entire solar system slowly drifts: the Sun is heading toward this neighborhood, the so-called solar apex.
Where it is and when to see it
39 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.
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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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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 39 Herculis
- Constellation
- Hercules
- Apparent magnitude
- 5.92
- Distance
- 142.7 light years
- Coordinates (J2000)
- RA 250.403° · Dec 26.917°
- Catalogue
- HIP 81729 · HD 150682
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.
- KornephorosBeta Herculis2.78
- RasalgethiAlpha 1 Herculis2.78
- Zeta Herculis2.81
- HIP 923125.89
- HIP 823505.91
- HIP 834785.91
- HIP 799535.93
- HIP 853825.94