Star profile
20 Eridani
Variable starWhat is 20 Eridani
20 Eridani is a blue-white variable star 487 light-years away, also catalogued as EG Eridani: it pulses with a very short period of 1.93 days, swinging between magnitudes 5.17 and 5.22. It is a heartbeat barely perceptible to the naked eye, yet cleanly measured by modern astronomy. It shines along the long course of the celestial River, one of many hot, fast stars peopling that meandering stream of light.
Where it is and when to see it
20 Eridani lies in the southern celestial hemisphere. It is visible to the naked eye under a dark sky. Its best month of the year is November: 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 20 Eridani
- Constellation
- Eridanus
- Apparent magnitude
- 5.24
- Distance
- 486.9 light years
- Coordinates (J2000)
- RA 54.073° · Dec -17.467°
- Catalogue
- HIP 16803 · HD 22470
A symbolic commemorative gift: neither the signature nor the chosen name implies ownership of the star or recognition by the IAU.
Other stars in Eridanus
Eridanus has 129 stars in Stelvia's catalogue. Here are a few of them.
- AchernarAlpha Eridani0.45
- CursaBeta Eridani2.78
- AcamarTheta 1 Eridani2.88
- HIP 138745.22
- 51 Eridani5.22
- HIP 144565.23
- 24 Eridani5.24
- Tau 7 Eridani5.24