Star profile
Omicron 1 Centauri
Variable starWhat is Omicron 1 Centauri
Omicron-1 Centauri is one of the few known yellow hypergiants in the sky: stars so unstable and rare that barely a dozen are documented across our entire galaxy. It pulses on a two-hundred-day cycle, shedding mass into space in slow waves, and forms a visual pair with nearby Omicron-2, which accompanies it like a blue echo.
Where it is and when to see it
Omicron 1 Centauri lies in the southern 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 Omicron 1 Centauri
- Constellation
- Centaurus
- Apparent magnitude
- 5.07
- Distance
- 326200.0 light years
- Coordinates (J2000)
- RA 172.942° · Dec -59.442°
- Catalogue
- HIP 56243 · HD 100261
A symbolic commemorative gift: neither the signature nor the chosen name implies ownership of the star or recognition by the IAU.
Other stars in Centaurus
Centaurus has 174 stars in Stelvia's catalogue. Here are a few of them.
- Rigil KentaurusAlpha 1 Centauri-0.01
- HadarBeta Centauri0.61
- TolimanAlpha 2 Centauri1.35
- HIP 728005.02
- HIP 696185.03
- HIP 658105.04
- HIP 648035.10
- HIP 655355.11