Star profile
Upsilon Capricorni
Cool red starWhat is Upsilon Capricorni
Upsilon Capricorni is a cool, enormous red M-type giant, whose reddish hue is noticeable even to a trained observer. It sits in the final stages of stellar life, swollen to dimensions that would engulf several planetary orbits of our own solar system. Its light, after travelling 580 years through the void, arrives faint but tinted a deep red from the constellation of the Sea Goat.
Where it is and when to see it
Upsilon Capricorni lies in the southern celestial hemisphere. It is visible to the naked eye under a dark sky. Its best month of the year is July, when it culminates around midnight.
- From London it culminates about 20° above the horizon.
- From New York it culminates about 31° above the horizon.
- From Sydney it culminates about 74° above the horizon.
It can be seen from anywhere south of 72° N.
It ranks no. 21 in brightness among the 48 stars of Capricornus in our catalogue. To find it, start from Deneb Algedi, the brightest: it lies about 16° away (a fist at arm's length covers about 10°).
The light you see today left it about 580 years ago.
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Astronomical data for Upsilon Capricorni
- Constellation
- Capricornus
- Apparent magnitude
- 5.15
- Distance
- 580.4 light years
- Coordinates (J2000)
- RA 310.012° · Dec -18.139°
- Catalogue
- HIP 101984 · HD 196777
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Other stars in Capricornus
Capricornus has 48 stars in Stelvia's catalogue. Here are a few of them.
- Deneb AlgediDelta Capricorni2.85
- DabihBeta Capricorni3.05
- AlgediAlpha 2 Capricorni3.58
- Pi Capricorni5.08
- Mu Capricorni5.08
- 46 Capricorni5.10
- 42 Capricorni5.16
- Phi Capricorni5.17