Star profile
19 Cygni
Variable starWhat is 19 Cygni
19 Cygni is a variable giant and visual double about 693 light-years away, deep in the body of the Swan. Its pair is split only by large-aperture telescopes; to the naked eye it looks like a single ruddy dot, and only under truly dark skies. It is closing in on the Sun at 39 km/s, while its brightness drifts softly around magnitude 5.2 —far too faint for any modern city.
Where it is and when to see it
19 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 77° up.
- From New York it culminates about 88° above the horizon.
- From Sydney it culminates about 17° above the horizon.
It can be seen from anywhere north of 51° S.
It ranks no. 60 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 690 years ago.
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Astronomical data for 19 Cygni
- Constellation
- Cygnus
- Apparent magnitude
- 5.18
- Distance
- 692.6 light years
- Coordinates (J2000)
- RA 297.642° · Dec 38.722°
- Catalogue
- HIP 97630 · HD 187849
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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
- 25 Cygni5.15
- 4 Cygni5.17
- HIP 964595.17
- 61 Cygni5.20
- 71 Cygni5.22