Star profile
70 Cygni
Hot blue starWhat is 70 Cygni
70 Cygni is a hot B-type blue star 1305 light-years away, one of the most distant lights still readable by the naked eye in the eastern wing of the Swan. The photon arriving tonight set out when the Byzantine Empire still called itself the Eastern Roman Empire. It shines with the severe blue of young, massive stars condemned to short and intense lives.
Where it is and when to see it
70 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 culminates about 76° above the horizon.
- From New York it culminates about 86° above the horizon.
- From Sydney it culminates about 19° above the horizon.
It can be seen from anywhere north of 53° S.
It ranks no. 65 in brightness among the 137 stars of Cygnus in our catalogue. To find it, start from Deneb, the brightest: it lies about 12° away (a fist at arm's length covers about 10°).
The light you see today left it about 1,300 years ago.
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Astronomical data for 70 Cygni
- Constellation
- Cygnus
- Apparent magnitude
- 5.30
- Distance
- 1304.8 light years
- Coordinates (J2000)
- RA 321.839° · Dec 37.117°
- Catalogue
- HIP 105942 · HD 204403
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
- 71 Cygni5.22
- HIP 999685.27
- HIP 1058985.29
- HIP 962885.34
- 60 Cygni5.38