Star profile
39 Boötis
What is 39 Boötis
39 Boötis sits in the Herdsman at 224 light-years, an F-type star hotter and whiter than the Sun. Its light departed in the late eighteenth century, when the first truly modern measuring instruments were being refined. Magnitude 5.68 — modest in brightness, yet the Hipparcos satellite pinned it precisely on the three-dimensional map of the solar neighbourhood.
Where it is and when to see it
39 Boötis lies in the northern celestial hemisphere. It is visible to the naked eye under a dark sky. Its best month of the year is April: 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 Boötis
- Constellation
- Boötes
- Apparent magnitude
- 5.68
- Distance
- 223.7 light years
- Coordinates (J2000)
- RA 222.422° · Dec 48.721°
- Catalogue
- HIP 72524 · HD 131041
A symbolic commemorative gift: neither the signature nor the chosen name implies ownership of the star or recognition by the IAU.
Other stars in Boötes
Boötes has 88 stars in Stelvia's catalogue. Here are a few of them.
- ArcturusAlpha Boötis-0.05
- IzarEpsilon Boötis2.35
- MuphridEta Boötis2.68
- 40 Boötis5.64
- HIP 750435.65
- 46 Boötis5.67
- 7 Boötis5.71
- HIP 664175.72