Universe Guide

Home / Facts / Constellations

Cygnus Constellation

Cygnus (Pronounciation:Cig-nus, Abbrev:Cyg, Latin:Cygni) is a constellation, one of 88 constellations that the night sky is divided into. The sky is not divided up equally between the constellations. Cygnus takes up 803.983 sq. degrees of the night sky which equates to 1.95% of the night sky. The constellation gets its name as it name means The Swan . The constellation is one of the original constellations that was devised by the Ancient Greco-Egyptian astronomer Ptolemy who lived between 90 A.D. and 168 A.D.

Cygnus is not a member of the Zodiac group of twelve constellations that appear when the Sun sets. Cygnus is a northern hemispheric constellation which means it can't be seen easily or at all from the southern hemisphere.

The brightest star in Cygnus is Deneb. There are 6 Extrasolar Planets (Exoplanets) in this constellation that are detailed on this site. The current largest star so far identified in the constellation of Cygnus is KY Cygni.

Cygnus Star and Deep Space Object Count

The number of stars that have been catalogued as part of the Hipparcos Star Catalogue from Cygnus is 3079. The number of stars that are of magnitude 6.0 or lower in the constellation is 137. The number of stars in the constellation that make up the outline is 8.

There are 2 deep space objects that were identified by Charles Messier in this constellation. There are 2 non-Messier deep space objects that are covered on this site and the list is below.

Stars of Interest

The nearest star to Earth is 61 Cygni which is roughly about 11.37 Light Years from the Earth. The nearest star to the Earth with an exoplanet is HD 197037 which is about 105.45 Light Years. The furthest star that can be located in the constellation is HIP 99439 which is located about 326163 Light Years away from the Sun. The furthest figure is derived from either the 1997 or 2007 Hipparcos star catalogue parallax figure and it has been known to produce distances that are wrong.

The dimmest star that can be seen in Cygnus with the naked eye is V1743 Cygni. The dim star has an apparent magnitude of 6. The dimmest star that a person is able to see with their naked eye is 6.0 magnitude based on the table in the reference. Ref: University of Michigan

The caveat of these stars are that they are catalogued on this site. If you know of a star that is nearer or further then do let me know in the comments and I'll add it to the site. The stars mentioned are from the Hipparcos catalogue or have been added because of their special status.

Legend of the Constellation

Cygnus was the brother of Phaethon who when the latter fell into Eridanus, turned into a swan to search for the body. Zeus took pity and turned Cygnus into a swan in the skies.

Largest Stars in our Galaxy

Cygnus has three of the largest stars in our galaxy, they are NML Cygni, BC Cygni, BI Cygni and KY Cygni. Of those stars, the largest is KY Cygni at a massive 1,420 times the radius of our star, the Sun. If any of those stars were in the centre of the solar system, we would be in side it. The largest currently recognised star is UY Scuti which is a massive 1,708 times the size of our Sun. Some sites will quote NML Cygni as the largest but they will be old sites and not been updated since UY Scuti became the largest.

Cygnus X-1 Black Hole

The constellation contains one of the first recognised black holes in the galaxy and referred to as Cygnus X-1. The black hole is leeching gas and plasma from the nearby star, HD 226868, sometimes referred to with an E (HDE).

Exoplanets in Cygnus

If you`re wondering why Cygnus has proportionally more exoplanet/extrasolar planets within its borders then the reason is because of the Kepler Space Telescope. The Kepler mission was to concentrate on one area of space to which to monitor for planets and the area in Cygnus matched the requirements. The area had to been visible from the Earth throughout the year so it had to be near the North or South poles and be unaffected by Earths orbit. The Northern hemisphere was chosen because the scientists on the project were predominately based in the northern hemisphere, United States and to a less extent Europe.

Meteor Showers

There are 19 Meteor Showers that occur during the year within this constellation based on information gathered from Adam Mickiewicz University (Poland). The ones listed as the ones I've been able to find a date range for. For others if you have the time, you can visit the AMU site, obtains the SL value then use IMO tables to calculate the date. A lot of the Meteor Showers are weak and you need to do a lot of stargazing to spot them.

NameActivityPeak ActivityClosest Star
Kappa CygnidsAug 03 - Aug 25 Aug 17Kappa Cygni

Cygnus Facts

Is a Zodiac Sign No
Largest StarKY Cygni
Brightest StarDeneb
Area803.983 sq. deg.
Percentage of Night Sky1.95%
Size Position16th
Hemisphere Northern
Site Exoplanet Count6
Meteor Shower Count19
Nearest Star61 Cygni
Nearest Star with Exoplanet(s)HD 197037
Dimmest StarV1743 Cygni
Furthest StarHIP 99439
Bright Star Count137
Hipparcos Star Count3079
Main Star Count8
Messier Deep Space Object Count2
*Non-Messier Deep Space Object Count2
Bordering / Neighbouring / Surrounding ConstellationsCepheus

*Note: The number of Non-Messier Deep Space Object Count relates to how many are covered on this site not how many there are.

Cygnus Constellation Map

Cygnus Constellation Star Map

The map was generated using Night Vision, an awesome free application by Brian Simpson.

List of Stars with Exoplanets in Cygnus

StarDistance (Lt. Yrs.)Exoplanet CountDeclinationRight Ascension
HD 185269163.981+28d 30` 00.219h 37m 11.76
HD 187123157.412+34d 25` 11.419h 46m 58.01
HD 191806226.351+52d 16` 34.020h 09m 28.20
HD 197037105.451+42d 14` 56.720h 39m 33.01
HD 203857918.771+37d 21` 05.421h 23m 48.39

List of Named Stars in Cygnus without Extrasolar Planets

As there's so many stars in the cosmos, not all the stars are listed here. The site has lots of stars not listed so if your star isn't listed and you know the Henry Draper or Hipparcos ID, type https://www.universeguide.com/star/ then followed by the HIPNNNNNN or HDNNNN where NNNNN is the number part of the name. The stars that I do list have either a traditional name, a bayer or other classification name.

StarDistance (Lt. Yrs.)DeclinationRight Ascension
11 Cygni602.89+36d 56` 40.419h 35m 48.30
14 Cygni652.33+42d 49` 05.619h 39m 26.47
15 Cygni289.15+37d 21` 15.419h 44m 16.55
16 Cygni69.19+50d 31` 04.519h 41m 52.10
16 Cygni B68.75+50d 31` 31.619h 41m 49.09
17 Cygni69.25+33d 43` 43.319h 46m 25.58
19 Cygni692.49+38d 43` 19.819h 50m 33.99
2 Cygni842.80+29d 37` 16.719h 24m 07.57
20 Cygni202.46+52d 59` 17.419h 50m 37.73
22 Cygni1443.20+38d 29` 12.119h 55m 51.76
23 Cygni633.33+57d 31` 24.519h 53m 17.37
25 Cygni1320.50+37d 02` 34.419h 59m 55.20
26 Cygni434.31+50d 06` 16.820h 01m 21.55
27 Cygni78.10+35d 58` 24.720h 06m 21.93
28 Cygni1035.44+36d 50` 22.520h 09m 25.62
29 Cygni139.27+36d 48` 22.120h 14m 31.98
30 Cygni610.79+46d 48` 56.420h 13m 18.04
33 Cygni159.26+56d 34` 03.120h 13m 23.80
35 Cygni3166.63+34d 58` 58.020h 18m 39.07
36 Cygni203.85+36d 59` 59.120h 18m 28.63
39 Cygni249.93+32d 11` 24.720h 23m 51.60
4 Cygni707.51+36d 19` 04.319h 26m 09.12
40 Cygni265.61+38d 26` 25.920h 27m 34.27
41 Cygni769.25+30d 22` 06.820h 29m 23.73
42 Cygni2588.60+36d 27` 17.020h 29m 20.39
43 Cygni122.53+49d 22` 59.620h 27m 02.21
44 Cygni3397.53+36d 56` 09.120h 30m 59.23
47 Cygni2764.10+35d 15` 03.120h 33m 54.19
48 Cygni853.83+31d 34` 21.120h 37m 31.77
49 Cygni797.47+32d 18` 26.320h 41m 02.54
51 Cygni1274.08+50d 20` 24.120h 42m 12.63
52 Cygni201.09+30d 43` 10.820h 45m 39.76
55 Cygni2329.74+46d 06` 50.920h 48m 56.29
56 Cygni133.62+44d 03` 32.320h 50m 04.83
57 Cygni525.22+44d 23` 14.220h 53m 14.75
59 Cygni1418.10+47d 31` 15.4 20h 59m 49.55
60 Cygni1524.13+46d 09` 20.821h 01m 10.92
61 Cygni11.37+38d 44` 29.421h 06m 50.84
61 Cygni B11.41+38d 44` 03.921h 06m 52.19
63 Cygni1032.16+47d 38` 54.321h 06m 36.09
68 Cygni4659.48+43 d 56 ` 45.521h 18m 27.18
69 Cygni9060.09+36d 40` 02.721h 25m 47.02
70 Cygni1304.65+37d 07` 00.521h 27m 21.36
71 Cygni216.72+46d 32` 25.221h 29m 26.91
72 Cygni231.49+38d 32` 01.821h 34m 46.48
74 Cygni214.72+40d 24` 48.621h 36m 56.98
75 Cygni403.67+43d 16` 25.721h 40m 11.06
76 Cygni496.44+40d 48` 19.221h 41m 34.27
77 Cygni412.34+41d 04` 37.321h 42m 22.94
79 Cygni274.55+38d 17` 01.021h 43m 25.63
8 Cygni860.59+34d 27` 10.719h 31m 46.32
9 Cygni558.50+29d 27` 46.519h 34m 50.92
Al Fawaris164.98+45d 07` 50.519h 44m 58.44
Albireo A434.31+27d 57` 34.919h 30m 43.29
Albireo B399.71+27d 57` 55.019h 30m 45.40
Azelfafage1725.73+51d 11` 22.721h 42m 05.66
BC Cygni2718.03+37d 31` 59.020h 21m 38.55
Campbell`s star16308.17+30d 30` 59.019h 34m 45.24
Chi Cygni589.81+32d 54` 50.919h 50m 33.94
CP Cygni550.95+44d 41` 47.821h 37m 27.88
Cygnus X-11941.45+35d 12` 05.819h 58m 21.68
Deneb1411.96+45d 16` 49.220h 41m 25.91
DT Cygni1689.97+31d 11` 04.821h 06m 30.24
Eta Cygni134.95+35d 05` 00.619h 56m 18.40
Gienah72.71+33d 58` 10.020h 46m 12.43
Gliese 77751.72+29d 53` 53.120h 03m 36.95
Iota Cygni350.71+52d 19` 13.819h 27m 25.97
Iota2 Cygni121.34+51d 43` 46.119h 29m 42.34
Kappa Cygni124.16+53d 22` 05.419h 17m 06.11
KY Cygni38d 21' 7.620h 25m 58.05
Lambda Cygni769.25+36d 29` 26.720h 47m 24.53
Mu1 Cygni72.53+28d 44` 35.621h 44m 08.40
NML Cygni+40 d 06 ` 59.420h 46m 25.6
Nu Cygni374.47+41d 10` 01.920h 57m 10.41
Omega1 Cygni908.53+48d 57` 05.620h 30m 03.53
Omicron1 Cygni883.91+46d 44` 28.820h 13m 37.90
Omicron2 Cygni1058.97+47d 42` 51.120h 15m 28.32
P Cygni10192.60+38d 01` 58.620h 17m 47.20
Pennae Caudalis1105.64+49d 18` 34.521h 46m 47.61
Phi Cygni266.26+30d 09` 11.619h 39m 22.60
Psi Cygni281.42+52d 26` 20.519h 55m 37.82
Rho Cygni123.59+45d 35` 31.421h 33m 58.87
RT Cygni+48d 46` 41.219h 43m 37.78
Ruchba399.22+49d 13` 13.320h 31m 18.81
Sadr1832.38+40d 15` 24.120h 22m 13.70
Sigma Cygni2886.40+39d 23` 40.921h 17m 24.95
T Cygni444.97+34d 22` 26.820h 47m 10.72
Tabby's Star+44d 27` 24.61 20h 06m 15.457
Tau Cygni66.35+38d 02` 39.621h 14m 47.35
Theta Cygni59.80+50d 13` 13.719h 36m 26.54
U Cygni1689.97+47d 53` 39.120h 19m 36.60
Upsilon Cygni642.05+34d 53` 48.821h 17m 55.07
V1143 Cygni133.35+54d 58` 24.219h 38m 41.15
V1276 Cygni278.06+29d 19` 53.919h 42m 49.07
V1334 Cygni2160.02+38d 14` 14.921h 19m 22.18
V1339 Cygni683.78+45d 45` 56.721h 42m 08.35
V1351 Cygni1032.16+55d 27` 47.919h 42m 04.13
V1584 Cygni1156.61+46d 50` 14.320h 19m 56.04
V1619 Cygni1016.09+39d 32` 11.921h 51m 04.97
V1743 Cygni1325.87+49d 15` 44.419h 33m 41.60
V1762 Cygni231.65+52d 25` 33.119h 08m 25.88
V1765 Cygni+33d 26` 14.319h 48m 50.60
V1768 Cygni5722.16+32d 13` 07.020h 04m 36.18
V1773 Cygni2588.60+46d 19` 20.020h 18m 49.67
V1817 Cygni1186.05+55d 43` 54.819h 31m 13.56
V1942 Cygni492.69+44d 38` 59.822h 02m 56.68
V2015 Cygni431.43+46d 41` 37.920h 33m 54.84
V2090 Cygni970.72+34d 24` 51.019h 44m 38.17
V2093 Cygni2651.73+37d 49` 34.719h 50m 46.87
V2100 Cygni778.43+52d 03` 20.519h 59m 15.34
V2119 Cygni1353.37+37d 28` 35.220h 23m 44.37
V2130 Cygni923.98+40d 34` 46.820h 39m 33.31
V2136 Cygni1606.72+46d 39` 40.820h 49m 54.64
V2140 Cygni+47d 25` 03.620h 55m 49.81
V2173 Cygni1076.45+48d 40` 06.821h 57m 02.22
V380 Cygni2117.94+40d 35` 59.219h 50m 37.33
V389 Cygni377.50+30d 12` 20.521h 08m 38.87
V460 Cygni2038.52+35d 30` 36.721h 42m 01.08
V819 Cygni1639.01+47d 48` 27.919h 53m 01.25
W Cygni570.22+45d 22` 28.521h 36m 02.44
WR 1362363.50+38d 21` 17.820h 12m 06.55
X Cygni5017.90+35d 35` 16.120h 43m 24.20
Xi Cygni842.80+43d 55` 40.321h 04m 55.86
Zeta Cygni143.12+30d 13` 37.521h 12m 56.18

Objects of Interest (Galaxies, Nebulas, Supernovas, etc) in Cygnus

NameTypeDistanceDeclinationRight Ascension
M29 Open ClusterOpen Cluster7.2+38:3220h 23m 9
M39 Open ClusterOpen Cluster0.8244+48:2621h 32m 2
North America NebulaEmission Nebula1,60044:31:4420h 59h 17
Veil NebulaSupernova Remnant147030:42:3020h 45h 38

Cygnus Constellation's Star Breakdown

Type Breakdown

AWhite 7,500 - 10,000k845
KLight Orange Star 3,700 - 5,200k693
BBlue-White 10,500 - 30,000k593
FYellow-White 6,000 - 7,500k365
GYellow 5,200 - 6,000k312
MRed Dwarf Star <3,700k110
OBlue Star >33,000k19

Size Breakdown

VMain Sequence324
IIINormal Giant268
IbLess Luminous Supergiant59
IIBright Giant55
IaLuminous Supergiant20
WWolf-Rayet Star11
IabIntermediate Luminous Supergiant9
DDwarf Star1

Breakdown of Carbon Stars by Type

NN-Type Carbon Star8
CC-Type Carbon Star8
RR-Type Carbon Star4
SS-Type Carbon Star3

Add a Comment

Email: (Optional)

michael hillMonday, 11th September 2017 12:59:09 PM
do you please have a map where ngc6866 tabby star is please.