Star profile
3 Monocerotis
Hot blue starWhat is 3 Monocerotis
3 Monocerotis is a blue B5III giant about 784 light-years away, in the quiet constellation of the Unicorn. It shines around eleven hundred times brighter than the Sun; all that light pours from a surface so hot it gives the star a blue-white cast. It is drifting from us at 39 km/s, a silent retreat that the geometry of space hides from the unaided eye.
Where it is and when to see it
3 Monocerotis lies in the southern celestial hemisphere. It is visible to the naked eye under a dark sky. Its best month of the year is December: 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 3 Monocerotis
- Constellation
- Monoceros
- Apparent magnitude
- 4.92
- Distance
- 784.1 light years
- Coordinates (J2000)
- RA 90.460° · Dec -10.598°
- Catalogue
- HIP 28574 · HD 40967
A symbolic commemorative gift: neither the signature nor the chosen name implies ownership of the star or recognition by the IAU.
Other stars in Monoceros
Monoceros has 71 stars in Stelvia's catalogue. Here are a few of them.
- Beta Monocerotis3.76
- Alpha Monocerotis3.94
- Gamma Monocerotis3.99
- 28 Monocerotis4.69
- 17 Monocerotis4.77
- 20 Monocerotis4.91
- 27 Monocerotis4.93
- 19 Monocerotis4.99