
Star profile
18 Monocerotis
What is 18 Monocerotis
18 Monocerotis burns amber 368 light-years away, inside winter's most discreet constellation. The Unicorn lacks bright stars, which is why this orange K-type giant stands out as a warm beacon among empty patches. Its light set out when Europe was just beginning to chart the Pacific —and is still on its way. A quiet presence in a sky region where almost everything is.
Where it is and when to see it
18 Monocerotis lies in the northern celestial hemisphere. It is visible to the naked eye under a dark sky. Its best month of the year is January, when it culminates around midnight.
- From London it culminates about 41° above the horizon.
- From New York it culminates about 52° above the horizon.
- From Sydney it culminates about 54° above the horizon.
It can be seen from anywhere north of 88° S.
It ranks no. 8 in brightness among the 71 stars of Monoceros in our catalogue. To find it, start from Beta Monocerotis, the brightest: it lies about 11° away (a fist at arm's length covers about 10°).
The light you see today left it about 370 years ago.
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Astronomical data for 18 Monocerotis
- Constellation
- Monoceros
- Apparent magnitude
- 4.48
- Distance
- 368.2 light years
- Coordinates (J2000)
- RA 101.965° · Dec 2.412°
- Catalogue
- HIP 32578 · HD 49293
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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
- Zeta Monocerotis4.36
- Epsilon Monocerotis4.39
- 13 Monocerotis4.47
- 15 Monocerotis4.66
- 28 Monocerotis4.69