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Semi-regular variable star in the constellation Cygnus
W Cygni is a semi-regular variable star in the constellation Cygnus, located 570 light-years from Earth. It lies less than half a degree southeast of
W_Cygni
Constellation in the northern celestial hemisphere
stellar association of Cygnus OB2. One of the stars of this association, NML Cygni, is one of the largest stars currently known. The constellation is also
Cygnus_(constellation)
Double star system in the constellation Cygnus
system. Although designated 'beta', it is fainter than Gamma Cygni, Delta Cygni, and Epsilon Cygni and is the fifth-brightest point of light in the constellation
Albireo
Binary star system in the Cygnus constellation
61 Cygni /ˈsɪɡni/ is a binary star system in the northern constellation Cygnus, consisting of a pair of K-type dwarf stars that orbit each other in a
61_Cygni
Irish astronomer and author
interested in variable stars of which he discovered several, most notably W Cygni in 1884, U Orionis in 1885, and independently discovered Nova Persei. In
John_Ellard_Gore
Variable star in the constellation Cygnus
P Cygni (34 Cygni) is a variable star in the constellation Cygnus. The designation "P" was originally assigned by Johann Bayer in Uranometria as a nova
P_Cygni
Multiple star in the constellation Cygnus
16 Cygni A and 16 Cygni B, together with a red dwarf, 16 Cygni C. In 1996 an extrasolar planet was discovered in an eccentric orbit around 16 Cygni B.
16_Cygni
Blue supergiant star in the constellation Cygnus
consisting of Deneb, Gamma Cygni, Delta Cygni, 30 Cygni, Nu Cygni, Tau Cygni, Upsilon Cygni, Zeta Cygni and Epsilon Cygni. Consequently, the Chinese name
Deneb
Star in the constellation Cygnus
consisting of Epsilon Cygni, Gamma Cygni, Delta Cygni, 30 Cygni, Alpha Cygni, Nu Cygni, Tau Cygni, Upsilon Cygni and Zeta Cygni. Consequently, the Chinese
Epsilon_Cygni
Star in the constellation Cygnus
NML Cygni or V1489 Cygni (abbreviated to NML Cyg or V1489 Cyg) is a red hypergiant or red supergiant (RHG or RSG) in the constellation Cygnus. It is one
NML_Cygni
Index of articles associated with the same name
Bayer designation Omega Cygni (ω Cyg / ω Cygni) is shared by two star systems, in the constellation Cygnus: ω1 Cygni ω2 Cygni The name Ruchba has sometimes
Omega_Cygni
Third-magnitude star in the constellation Cygnus
Delta Cygni is a binary star system of a combined third-magnitude in the northern constellation of Cygnus. It is part of the Northern Cross asterism whose
Delta_Cygni
Triple star system in the constellation Cygnus
31 Cygni is a ternary star system in the constellation of Cygnus. Alternatively, it is known as ο1 Cygni, Omicron1 Cygni, ο2 Cygni or V695 Cygni. Based
31_Cygni
Extrasolar planet
16 Cygni Bb or HD 186427 b is an extrasolar planet approximately 69 light-years (21 parsecs) away in the constellation of Cygnus. The planet was discovered
16_Cygni_Bb
Star in the constellation Cygnus
Chi Cygni is a Mira variable star in the constellation Cygnus, and also an S-type star. Its name is a Bayer designation that is Latinized from χ Cygni, and
Chi_Cygni
Multiple system in the constellation Cygnus
V404 Cygni is a microquasar and a triple star system in the constellation of Cygnus. It contains a black hole with a mass of about 9 M☉ and an early K
V404_Cygni
English astronomer (1858–1944)
491. Blagg, Mary; Turner, H H (November 1919). "The Long-period Variable W Cygni". Monthly Notices of the Royal Astronomical Society. 80: 41–64. Bibcode:1919MNRAS
Mary_Adela_Blagg
Star in the constellation Cygnus
consisting of Gamma Cygni, Delta Cygni, 30 Cygni, Alpha Cygni, Nu Cygni, Tau Cygni, Upsilon Cygni, Zeta Cygni and Epsilon Cygni. Consequently, the Chinese
Gamma_Cygni
Variable stars which exhibit non-radial pulsations
Alpha Cygni variables are variable stars which exhibit non-radial pulsations, meaning that some portions of the stellar surface are contracting at the
Alpha_Cygni_variable
Rare star with tremendous luminosity and high rates of mass loss by stellar winds
Scorpii BC Cygni BI Cygni CK Carinae HD 143183 KY Cygni KW Sagittarii Mu Cephei MY Cephei NML Cygni NR Vulpeculae PZ Cassiopeiae RT Carinae RW Cygni S Persei
Hypergiant
Nebula near the star Sadr
1318 (also known as Gamma Cygni Nebula) is the diffuse emission nebula and a H II region surrounding the star Sadr (γ Cygni) at the center of Cygnus's
IC_1318
Star in the constellation Cygnus
Mu Cygni is a binary star system in the northern constellation of Cygnus. Its name is a Bayer designation that is Latinized from μ Cygni, and abbreviated
Mu_Cygni
Star in the constellation Cygnus
AZ Cygni (BD+45 3349) is a red supergiant (M3 Iab) in the constellation of Cygnus. Located 2,090 parsecs (6,800 ly) from Earth, it has been studied by
AZ_Cygni
Star in the constellation Cygnus
Theta Cygni is a binary star system in the northern constellation of Cygnus. Its name is a Bayer designation, which is Latinized from θ Cygni and abbreviated
Theta_Cygni
Star in the constellation Cygnus
Eta Cygni is a star in the northern constellation of Cygnus. It has the proper name Almighzal; Eta Cygni is its Bayer designation, which is Latinized from
Eta_Cygni
astronomy at the University. He calculated the orbit of the double star 61 Cygni and for sometime was involved in geodetical determinations of longitude
Carl_F._W._Peters
Binary star system in the constellation Cygnus
32 Cygni is a binary star system in the constellation of Cygnus. It has the Bayer designation Omicron2 Cyg, which is Latinized from ο2 Cyg and abbreviated
32_Cygni
Star in the constellation Cygnus
KY Cygni is a variable red supergiant or hypergiant of spectral class M3Ia located in the constellation Cygnus. It is approximately 4,700 light-years
KY_Cygni
Star in the constellation Cygnus
V1974 Cygni or Nova Cygni 1992 was a nova, visible to the naked eye, in the constellation Cygnus. It was discovered visually with 10×50 binoculars on
V1974_Cygni
Variable star in the constellation Cygnus
V380 Cygni is an eclipsing binary star in the constellation Cygnus, located about 3,800 light years away from the Earth. Its apparent magnitude ranges
V380_Cygni
Distance that light travels in one year
a star other than the Sun, by Friedrich Bessel in 1838. The star was 61 Cygni, and he used a 160-millimetre (6.2 in) heliometre designed by Joseph von
Light-year
Topics referred to by the same term
RW Cephei, an orange hypergiant located in the constellation Cepheus RW Cygni, a red supergiant located in the constellation Cygnus RW Leonis Minoris
RW
Emission nebula
2-119. The nebula surrounds blue giant 68 Cygni. The nebula contains multiple dust lanes and bok globules. 68 Cygni is the primary source of ionization within
Clamshell_Nebula
Variable star in the constellation Cygnus
V389 Cygni, also known as HD 201433 and HR 8094, is a multiple star system about 390 light years from the Earth, in the constellation Cygnus. It is visible
V389_Cygni
X-ray binary in Cygnus containing a stellar black hole
sphere, this star lies about half a degree from the 4th-magnitude star Eta Cygni. HDE 226868 is a typical O-type supergiant; the strong X-ray emissions from
Cygnus_X-1
Variable star in the constellation Cygnus
SS Cygni is a variable star in the northern constellation Cygnus (the Swan). It was discovered in 1896 by Louisa D. Wells, a computer working under Edward
SS_Cygni
Brightest star in the constellation Orion
M.; Roogering, H. J. A.; Steeman, F. W. M.; Tijdhof, W. (1989). "Light variations of massive stars (alpha Cygni variables). IX". Astronomy and Astrophysics
Rigel
brightness. List of stars by constellation SGR 1935+2154 D. Hoffleit and W. H. Warren, Jr., The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version)
List_of_stars_in_Vulpecula
Variable star in the constellation Cygnus
V1334 Cygni, also referred to as ADS 14859 and HR 8157 in astronomical literature, is a star about 2,350 light years from the Earth in the constellation
V1334_Cygni
Type of star that is luminous, blue, and variable in brightness
one of the brightest stars of the Large Magellanic Cloud. The LBV stars P Cygni and η Carinae have been known as unusual variables since the 17th century
Luminous_blue_variable
Cluster of massive and luminous stars
Cygnus OB2 or VI Cygni (abbreviated to VI Cyg) is an OB association that is home to some of the most massive and most luminous stars known, including
Cygnus_OB2
Star in the constellation Cygnus
Upsilon Cygni is a star in the northern constellation of Cygnus. Its name is a Bayer designation that is Latinized from υ Cygni, and abbreviated Upsilon
Upsilon_Cygni
Star in the constellation Cygnus
Zeta Cygni is a binary star system in the northern constellation of Cygnus, the swan. It has the proper name Tianjinnan; Zeta Cygni is its Bayer designation
Zeta_Cygni
A-type main sequence star in the constellation Cygnus
Iota2 Cygni is a single star in the constellation Cygnus. Its name is a Bayer designation that is Latinized from ι2 Cygni, and abbreviated Iota2 Cyg or
Iota2_Cygni
Binary star in the constellation Cygnus
Y Cygni is an eclipsing and double-lined spectroscopic binary star system in the constellation of Cygnus. It is located about 4,900 light-years from Earth
Y_Cygni
Star in the constellation of Cygnus
classified as an Algol type eclipsing variable and given the designation V1769 Cygni, but the variation is not strictly periodic and brightness changes occur
WR_134
Star in the constellation Cygnus
27 Cygni is a subgiant star in the northern constellation of Cygnus. It is faintly visible to the naked eye with an apparent visual magnitude of 5.38
27_Cygni
ISSN 0004-6361. Data about NML Cygni (IRC +40448) is found here at VizieR. Zhang, B.; Reid, M. J.; Menten, K. M.; Zheng, X. W.; Brunthaler, A. (2012). "The
List_of_nearest_hypergiants
Variable star in the constellation Cygnus
Tau Cygni, Latinised from τ Cygni, also named Enduri Senggu (Manchu: ᡝᠨᡩᡠᡵᡳ ᠰᡝᠩᡤᡠ, Möllendorff: enduri senggu), is a binary star system in the constellation
Tau_Cygni
Heterogeneous class of stars with unusual spectra
Wolf–Rayet emission lines frequently have a broadened absorption wing (P Cygni profile) suggesting circumstellar material. A WO sequence has also been
Wolf–Rayet_star
Star and surrounding nebula
44 Cygni is a supergiant star in the constellation Cygnus. It is surrounded by the reflection nebula vdB 133. The nebula Sh 2-106 is found less than a
44_Cygni
Star in the constellation Cygnus
Xi Cygni is a binary star system in the constellation Cygnus. Its name is a Bayer designation that is Latinized from ξ Cygni and abbreviated Xi Cyg or
Xi_Cygni
Final gesture or effort
"swan song" (Ancient Greek: κύκνειον ᾆσμα kýkneion ásma; Latin: carmen cygni) refers to a final gesture, effort, or performance given just before death
Swan_song
Star in the constellation Cygnus
Rho Cygni is a yellow-hued star in the northern constellation of Cygnus. Its name is a Bayer designation that is Latinized from ρ Cygni and abbreviated
Rho_Cygni
Star in the constellation Cygnus
Pi1 Cygni is a star in the northern constellation of Cygnus. It has the proper name Azelfafage, pronounced /əˈzɛlfəfeɪdʒ/. This system is visible to the
Pi1_Cygni
Star in the constellation Cygnus
68 Cygni is a star in the constellation Cygnus. Located approximately 690 parsecs (2,300 ly) distant, the star is a hot blue giant of spectral type O7
68_Cygni
Star in the constellation Cygnus
Lambda Cygni is a multiple star system in the northern constellation of Cygnus. Its name is a Bayer designation that is Latinized from λ Cygni and abbreviated
Lambda_Cygni
Star in the constellation Cygnus
Sigma Cygni, Latinised from σ Cygni, is a blue supergiant star in the constellation Cygnus. Its apparent magnitude is 4.2. It belongs to the Cygnus OB4
Sigma_Cygni
Binary star system in the constellation Cygnus
Iota1 Cygni is a probable binary star system in the northern constellation Cygnus. Its name is a Bayer designation that is Latinized from ι1 Cygni, and
Iota1_Cygni
A-type main sequence star in the constellation Cygnus
29 Cygni (also widely known as HIP 99770) is a single star in the northern constellation of Cygnus. It is dimly visible to the naked eye as a white-hued
29_Cygni
Hypothetical compact star
hole. Some stellar black holes might be grey holes, two of which are V404 Cygni and Cygnus X-1. Q-ball B-ball, stable Q-balls with a large baryon number
Q_star
Type of eruptive variable star
of the disk. The prototypes of this class are: FU Orionis, V1057 Cygni, V1515 Cygni, and the embedded protostar V1647 Orionis, which erupted in January
FU_Orionis_star
Star in the constellation Cygnus
ψ Cygni, Latinised as Psi Cygni, is a triple star system in the constellation called Cygnus. With a combined apparent visual magnitude of 4.92, it is
Psi_Cygni
Star system in the constellation Cygnus
Pi2 Cygni is a candidate triple star system in the northern constellation of Cygnus. Is name is a Bayer designation that is Latinized from π2 Cygni and
Pi2_Cygni
Star in the constellation Cygnus
55 Cygni (55 Cyg) is a blue supergiant star in the constellation Cygnus. It is thought to be a member of the Cygnus OB7 stellar association at about 2
55_Cygni
Star in the constellation of Cygnus
lying in the sky at the centre of the triangle formed by Deneb, γ Cygni and δ Cygni. WR 140 is thought to be a prototypical example of cosmic dust production
WR_140
Stellar classification
unchanged over the years, are: Sigma Draconis (K0 V) Epsilon Eridani (K2 V) 61 Cygni A (K5 V) Other primary MK standard stars include: 70 Ophiuchi A (K0 V),
K-type_main-sequence_star
Star in the constellation Cygnus
V1500 Cygni or Nova Cygni 1975 was a bright nova occurring in 1975 in the constellation Cygnus. It had the second highest intrinsic brightness of any
V1500_Cygni
Star in constellation Cygnus
V1331 Cygni (also known as V1331 Cyg) is a young star in the located 1,950 light years from Earth on the constellation of Cygnus. V1331 Cyg is located
V1331_Cygni
Variable star in the constellation Cygnus
T Cygni is a binary star system in the northern constellation of Cygnus. It is a faint system but visible to the naked eye with a combined apparent visual
T_Cygni
Exoplanet candidate orbiting KOI-5715
1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP
KOI-5715.01
Binary star system in the constellation Cygnus
52 Cygni is a giant star in the northern constellation of Cygnus with an apparent magnitude of 4.22. Based on its Hipparcos parallax, it is about 291
52_Cygni
B-type subgiant star in the constellation Cygnus
Omega1 Cygni, Latinized from ω1 Cygni, is the Bayer designation for a solitary star in the northern constellation of Cygnus. It is visible to the naked
Omega1_Cygni
Star in the constellation Cygnus
V476 Cygni or Nova Cygni 1920 was a nova which occurred in the constellation Cygnus in 1920. It was discovered by William Frederick Denning, an English
V476_Cygni
Star in the constellation Cygnus
primary is one of the highest known for a system of its type. V1191 Cygni is a W-type W UMa variable, meaning that the primary eclipse occurs when the less-massive
V1191_Cygni
Star in the constellation Cygnus
BI Cygni (abbreviated to BI Cyg), also known as BD+36°4025, is a red supergiant or hypergiant in the constellation Cygnus. It is an irregular variable
BI_Cygni
Single star in the constellation Cygnus
33 Cygni is a single star located 159 light years away in the northern constellation Cygnus. It is visible to the naked eye as a white-hued star with
33_Cygni
Star in the constellation Cygnus
2 Cygni is a blue-white hued star in the northern constellation of Cygnus, located a few degrees from Albireo. It is a probable astrometric binary; the
2_Cygni
German astronomer and mathematician (1784–1846)
to 61 Cygni]. Astronomische Nachrichten (in German). 16 (365–366): 65–96. Bibcode:1838AN.....16...65B. doi:10.1002/asna.18390160502. Bessel, F. W. (1838b)
Friedrich_Wilhelm_Bessel
Type of variable stars
decades. The prototype is FU Orionis, and other specimens are V1057 Cygni and V1515 Cygni. Of this diverse class of stars, some Orion variables may exhibit
Orion_variable
Star in the constellation Cygnus
Kappa Cygni is a star in the northern constellation of Cygnus. Its name is a Bayer designation that is Latinized from κ Cygni and abbreviated Kappa Cyg
Kappa_Cygni
Star in the constellation Cygnus
Omega2 Cygni, Latinized from ω2 Cygni, is the Bayer designation for a solitary star in the northern constellation of Cygnus. It has an apparent visual
Omega2_Cygni
Star in the constellation Norma
visual magnitude between 4.87 and 4.98, and is suspected of being an Alpha Cygni variable, which are named after Deneb. It is in the same direction and at
Mu_Normae
Latin for the Illiterati, Routledge, 1999, p. 53. Giles Jacob, A Law Grammar, W. Clarke & Sons, 1817, p. 3. New Liturgical Movement, First Mass Celebrated
List_of_Latin_phrases_(full)
Star in the constellation Cygnus
30 Cygni (ο1 Cygni) is a class A5III (white giant) star in the constellation Cygnus. Its apparent magnitude is 4.83 and it is approximately 610 light
30_Cygni
Star in the constellation Cygnus
56 Cygni is a single star in the northern constellation of Cygnus, located 135 light years from Earth. It is visible to the naked eye as a white-hued
56_Cygni
Blue supergiant star in the constellation Perseus
up its core hydrogen and is now fusing heavier elements. It is an Alpha Cygni variable (designated V474 Persei), a type of non-radial pulsating variable
9_Persei
Open cluster in the constellation Cygnus
bright open cluster of stars just south of the central bright star Gamma Cygni of a northerly zone of the sky, Cygnus. It was discovered by Charles Messier
Messier_29
Fictional planet
idea came from an object that was at the time believed to exist in the 61 Cygni system, and which might represent an extrasolar planet. The planet is distinctive
Mesklin
Blue supergiant star in the constellation Canis Major
already in the final stages of its life. The star is classified as an Alpha Cygni-type variable star and its brightness varies from magnitude +2.38 to +2
Eta_Canis_Majoris
Star in the constellation of Puppis
The variations had been thought to be the due to the pulsations of an α Cygni variable, but are too predictable and regular. The eclipse-like light curve
Zeta_Puppis
Star in the constellation of Cygnus
Bibcode:2014ApJ...785..100M. doi:10.1088/0004-637X/785/2/100. S2CID 118596124. Hamann, W.-R.; Wessolowski, U.; Koesterke, L. (1994). "Non-LTE spectral analyses of
WR_136
Star in the constellation Canis Major
orbit of Jupiter. The star is usually compared to another similar star, NML Cygni, and has also been described as 'Betelgeuse on steroids'. The first known-recorded
VY_Canis_Majoris
Stars with a supergiant luminosity class with a spectral type of K or M
M. J.; Menten, K. M.; Zheng, X. W.; Brunthaler, A. (2012). "The distance and size of the red hypergiant NML Cygni from VLBA and VLA astrometry". Astronomy
Red_supergiant
Cloud of heated and ionized gas and dust in the constellation Cygnus
Broom", Lacework Nebula, "Filamentary Nebula") near the foreground star 52 Cygni; The Eastern Veil (also known as Caldwell 33), whose brightest area is NGC
Veil_Nebula
Variable Star in the constellation Cygnus
V453 Cygni (also designated HD 227696 or BD+35° 3964) is a detached eclipsing binary star system located in the constellation of Cygnus. It consists of
V453_Cygni
K-type giant star in the constellation Cygnus
72 Cygni is a star in the northern constellation of Cygnus, located 299 light years from the Sun and a member of the Hercules stream. It is visible to
72_Cygni
Star in the constellation Carina
automated classification from Hipparos photometry suggested it is an α Cygni variable. The observed brightness varies from magnitude +4.63 to +4.72.
V399_Carinae
High mass X-ray binary in the constellation of Cygnus
wavelengths, Cygnus X-3 has been given the variable star designation V1521 Cygni. Cygnus X-3 is notable for its intense X-ray emission, but it is also remarkable
Cygnus_X-3
Star in the constellation Cygnus
RW Cygni is a semiregular variable star in the constellation Cygnus, about a degree east of 2nd magnitude γ Cygni. Its apparent magnitude varies between
RW_Cygni
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