Star profile
55 Cygni
Variable starWhat is 55 Cygni
55 Cygni is a blue supergiant, one of those rare stellar beasts that burn with colossal violence before ending as supernovae. It lies some 2,330 light-years away in the Milky Way of Cygnus, and varies slightly as a variable star —astronomers have placed it among the slow pulsations of blue supergiants—. Its light, kindled when the Roman Empire had not yet dreamt of its fall, now reaches the eye on Earth.
Where it is and when to see it
55 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: the Sun sits at the opposite point of the sky and the star culminates around midnight. How high it climbs above the horizon depends on the latitude you watch from.
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A public signature from a real person. The chosen name is a symbolic denomination within Stelvia, with no official standing or IAU recognition: the sky is not for sale and belongs to no one.
Astronomical data for 55 Cygni
- Constellation
- Cygnus
- Apparent magnitude
- 4.81
- Distance
- 2330.0 light years
- Coordinates (J2000)
- RA 312.235° · Dec 46.114°
- Catalogue
- HIP 102724 · HD 198478
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
- 34 Cygni4.77
- 57 Cygni4.80
- 30 Cygni4.80
- 72 Cygni4.87
- 15 Cygni4.89