Star profile
75 Cygni
Cool red starWhat is 75 Cygni
75 Cygni is a red M-type giant settled some 404 light-years away in the body of the Swan, the great cross laid across the summer Milky Way. Its cool surface —barely half the Sun's temperature— gives it a distinctly orange cast through binoculars. The light reaching us tonight left the star around 1620, at the dawn of telescopic astronomy.
Where it is and when to see it
75 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 September, when it culminates around midnight.
- From London it never sets and culminates about 82° up.
- From New York it culminates about 87° above the horizon.
- From Sydney it culminates about 13° above the horizon.
It can be seen from anywhere north of 47° S.
It ranks no. 53 in brightness among the 137 stars of Cygnus in our catalogue. To find it, start from Deneb, the brightest: it lies about 11° 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 75 Cygni
- Constellation
- Cygnus
- Apparent magnitude
- 5.09
- Distance
- 403.7 light years
- Coordinates (J2000)
- RA 325.046° · Dec 43.274°
- Catalogue
- HIP 106999 · HD 206330
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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
- 56 Cygni5.06
- HIP 968255.06
- 26 Cygni5.06
- Albireo BBeta 2 Cygni5.12
- 35 Cygni5.14