Star profile
HIP 23840
Variable starWhat is HIP 23840
In the small southern constellation Dorado pulses a red M-type giant, cool and vast, breathing in slow cycles like a sleeping titan. Its shifting light —for it is a variable star— travelled close to 565 years to reach us, leaving home when Constantinople had just fallen and a whole world was reordering itself around the eastern Mediterranean. That visible heartbeat is the ancient pulse of a dying, serene sun.
Where it is and when to see it
HIP 23840 lies in the southern celestial hemisphere. It is visible to the naked eye under a dark sky. Its best month of the year is October: 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 HIP 23840
- Constellation
- Dorado
- Apparent magnitude
- 5.19
- Distance
- 565.3 light years
- Coordinates (J2000)
- RA 76.892° · Dec -63.400°
- Catalogue
- HIP 23840 · HD 33684
A symbolic commemorative gift: neither the signature nor the chosen name implies ownership of the star or recognition by the IAU.
Other stars in Dorado
Dorado has 18 stars in Stelvia's catalogue. Here are a few of them.
- Alpha Dorado3.30
- Beta Dorado3.76
- Gamma Dorado4.26
- Nu Dorado5.06
- Epsilon Dorado5.10
- Lambda Dorado5.14
- Kappa Dorado5.28
- HIP 260015.34