Star profile
25 Serpens
Variable starWhat is 25 Serpens
25 Serpentis is a variable blue B-type star within the body of the Serpent, the only constellation split into two halves —Caput and Cauda— by the Ophiuchus who holds it. Its surface burns at tens of thousands of kelvin and flickers slightly in brightness, a hallmark of massive stars driven by deep-layer instabilities. From 450 light-years, its light crossed space as Tycho Brahe observed the 1572 supernova that would reshape cosmology.
Where it is and when to see it
25 Serpens lies in the southern 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 25 Serpens
- Constellation
- Serpens
- Apparent magnitude
- 5.39
- Distance
- 449.9 light years
- Coordinates (J2000)
- RA 236.523° · Dec -1.804°
- Catalogue
- HIP 77227 · HD 140873
A symbolic commemorative gift: neither the signature nor the chosen name implies ownership of the star or recognition by the IAU.
Other stars in Serpens
Serpens has 65 stars in Stelvia's catalogue. Here are a few of them.
- UnukalhaiAlpha Serpens2.63
- Eta Serpens3.23
- Mu Serpens3.54
- Chi Serpens5.34
- 6 Serpens5.35
- 60 Serpens5.38
- HIP 791955.39
- HIP 898515.39