Star profile
Omega 2 Cygni
Cool red starWhat is Omega 2 Cygni
Omega-2 Cygni is a red giant on Cygnus's asymptotic branch, an aged star in full expansion, just barely seen under dark skies. It forms a visual double with its neighbour Omega-1, splittable in small telescopes: two distinct embers strung by chance along the plane of the Milky Way.
Where it is and when to see it
Omega 2 Cygni lies in the northern celestial hemisphere. It is visible to the naked eye under a dark sky. Its best month of the year is August, when it culminates around midnight.
- From London it never sets and culminates about 88° up.
- From New York it culminates about 81° above the horizon.
- From Sydney it culminates about 7° above the horizon.
It can be seen from anywhere north of 41° S.
It ranks no. 72 in brightness among the 137 stars of Cygnus in our catalogue. To find it, start from Deneb, the brightest: it lies about 4° away (a fist at arm's length covers about 10°).
The light you see today left it about 400 years ago.
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Astronomical data for Omega 2 Cygni
- Constellation
- Cygnus
- Apparent magnitude
- 5.44
- Distance
- 399.3 light years
- Coordinates (J2000)
- RA 307.828° · Dec 49.220°
- Catalogue
- HIP 101243 · HD 195774
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Other stars in Cygnus
Cygnus has 137 stars in Stelvia's catalogue. Here are a few of them.
- DenebAlpha Cygni1.25
- SadrGamma Cygni2.23
- AljanahEpsilon Cygni2.48
- 9 Cygni5.39
- 51 Cygni5.41
- 14 Cygni5.41
- HIP 981945.46
- HIP 1031455.47