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Cygnus (abbr. Cyg, gen. Cygni)
The Swan; a conspicuous northern constellation that lies east of Lyra and north of Vulpecula. The main stars form a cruciform asterism known as the Northern Cross – a familiar sight overhead in northern winter evening skies. See below for details of the constellation's brightest stars and interesting deep sky objects.
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| Cygnus. © 2003 Torsten Bronger. Copied here under the terms of the GNU Free Documentation License |
| Stars brighter than magnitude 4.0 | ||||||
|---|---|---|---|---|---|---|
| Star | Visual mag. |
Abs. mag. |
Spectral type |
Distance (lt-yr) |
R.A. (h m s) | Dec. ( ° ' '' ) |
| Alpha (Deneb) | 1.25 | -8.73 | A2Iae | 3,230 | 20 41 26 | +45 16 49 |
| Gamma (Sadr) | 2.23 | -6.12 | F8Ib | 1,520 | 20 22 14 | +40 15 24 |
| Epsilon (Gienah) | 2.58 | -0.94 | K0III | 165 | 20 46 13 | +33 58 13 |
| Delta | 2.86 | -0.74 | B9.5IV+F1V | 171 | 19 44 58 | +45 07 51 |
| Beta (Albireo) | 3.05 | -2.32 | K3II+B0.5V | 386 | 19 30 43 | +27 57 35 |
| Zeta | 3.21 | -0.12 | G8III-IIIaBa | 151 | 21 12 56 | +30 13 37 |
| Xi | 3.72 | -4.07 | K5Ib-II | 1,180 | 21 04 56 | +43 55 40 |
| Tau | 3.73 | 2.13 | F1IV | 68 | 21 14 47 | +38 02 44 |
| Iota | 3.76 | 0.88 | A5Vn | 122 | 19 29 42 | +51 43 47 |
| Kappa | 3.80 | 0.91 | K0III | 123 | 19 17 06 | +53 22 07 |
| Eta | 3.89 | 0.73 | K0III | 139 | 19 56 18 | +35 05 00 |
| Nu | 3.94 | -1.25 | A1Vn | 356 | 20 57 10 | +41 10 02 |
| Other objects of interest | ||
|---|---|---|
| Name | Type of Object | Notes |
| 61 Cygni | star | See separate entry |
| P Cygni | star | The prototype P Cygni star |
| SS Cygni | star | The prototype SS Cygni star |
| Cygnus X-1 | star | See separate entry |
| Blinking Nebula | planetary nebula | NGC 6826. See separate entry |
| NGC 7072 | planetary nebula | An object with an irregular shape and four bright condensations. Magnitude 13.9; diameter 0.8'; R.A. 21h 30.6m, Dec. -43° 09' |
| NGC 6960, 6992 | diffuse nebula | The western and eastern parts, respectively, of the Veil Nebula |
| North America Nebula | diffuse nebula | NGC 7000. See separate entry |
| Pelican Nebula | diffuse nebula | IC 5067, 5070. See separate entry |
| Great Rift | dark nebula | See separate entry |
| M29 (NGC 6913) | open cluster | A cluster of about 50 stars near Gamma Cyg. Magnitude 6.6; diameter 7'; R.A. 20h 23.9m, Dec. +48° 26'. |
| M39 (NGC 7092) | open cluster | About 50 stars in a loose grouping about 9o east and slightly north of Deneb. Magnitude 4.6; diameter 32'; R.A. 21h 32.2m, Dec. +44° 20'. |
| Cygnus A | galaxy | See separate entry |
| Constellations |
| Andromeda | Antlia | Apus | Aquarius | Aquila | Ara | Aries | Auriga | Bootes | Caelum | Camelopardalis | Cancer | Canes Venatici | Canis Major | Canis Minor | Capricornus | Carina | Cassiopeia | Centaurus | Cepheus | Cetus | Chamaeleon | Circinus | Columba | Coma Berenices | Corona Austrina | Corona Borealis | Corvus | Crater | Crux | Cygnus | Delphinus | Dorado | Draco | Equuleus | Eridanus | Fornax | Gemini | Grus | Hercules | Horologium | Hydra | Hydrus | Indus | Lacerta | Leo | Leo Minor | Lepus | Libra | Lupus | Lynx | Lyra | Mensa | Microscopium | Monoceros | Musca | Norma | Octans | Ophiuchus | Orion | Pavo | Pegasus | Perseus | Phoenix | Pictor | Pisces | Piscis Austrinus | Puppis | Pyxis | Reticulum | Sagitta | Sagittarius | Scorpius | Sculptor | Scutum | Serpens | Sextans | Taurus | Telescopium | Triangulum | Triangulum Australe | Tucana | Ursa Major | Ursa Minor | Vela | Virgo | Volans | Vulpecula |
Related categories
• NOTABLE STARS
• NEBULAE AND STAR CLUSTERS
• GALAXIES
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