Star profile
30 Cygni
What is 30 Cygni
30 Cygni is a white A-type star burning 611 light-years away, near the heart of the Swan. It belongs to the Northern Cross, the asterism that spreads its wings across the summer Milky Way. With no known companion or pulsation, its light is a steady flame —the glow of a young, hot sun many times more luminous than our own.
Where it is and when to see it
30 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 85° up.
- From New York it culminates about 84° above the horizon.
- From Sydney it culminates about 9° above the horizon.
It can be seen from anywhere north of 43° S.
It ranks no. 33 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 610 years ago.
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Astronomical data for 30 Cygni
- Constellation
- Cygnus
- Apparent magnitude
- 4.80
- Distance
- 610.9 light years
- Coordinates (J2000)
- RA 303.325° · Dec 46.816°
- Catalogue
- HIP 99639 · HD 192514
A symbolic commemorative gift: neither the signature nor the chosen name implies ownership of the star or recognition by the IAU.
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
- 8 Cygni4.74
- 34 Cygni4.77
- 57 Cygni4.80
- 55 Cygni4.81
- 72 Cygni4.87