Star profile
32 Cygni
Variable starWhat is 32 Cygni
32 Cygni glows in the heart of the Swan as a double beacon: an orange K7 supergiant paired with a far hotter blue B-type companion. Every 1,147 days the giant eclipses its partner, and astronomers use those windows to map the extended stellar wind —yielding some of the finest portraits ever made of a supergiant atmosphere. The light arriving tonight set out over a thousand years ago, while medieval Europe still tracked time by harvests.
Where it is and when to see it
32 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 86° up.
- From New York it culminates about 83° above the horizon.
- From Sydney it culminates about 8° above the horizon.
It can be seen from anywhere north of 42° S.
It ranks no. 14 in brightness among the 137 stars of Cygnus in our catalogue. To find it, start from Deneb, the brightest: it lies about 5° away (a fist at arm's length covers about 10°).
The light you see today left it about 1,100 years ago.
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Astronomical data for 32 Cygni
- Constellation
- Cygnus
- Apparent magnitude
- 3.96
- Distance
- 1059.1 light years
- Coordinates (J2000)
- RA 303.868° · Dec 47.714°
- Catalogue
- HIP 99848 · HD 192909
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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
- 31 Cygni3.80
- Eta Cygni3.89
- Nu Cygni3.94
- Rho Cygni3.98
- 41 Cygni4.01