Pi1 Cygni is a star

Star

A star is a massive, luminous sphere of plasma held together by gravity. At the end of its lifetime, a star can also contain a proportion of degenerate matter. The nearest star to Earth is the Sun, which is the source of most of the energy on Earth...

 in the constellation

Constellation

In modern astronomy, a constellation is an internationally defined area of the celestial sphere. These areas are grouped around asterisms, patterns formed by prominent stars within apparent proximity to one another on Earth's night sky....

 Cygnus

Cygnus (constellation)

Cygnus is a northern constellation lying on the plane of the Milky Way. Its name is the Latinized Hellenic word for swan. One of the most recognizable constellations of the northern summer and autumn, it features a prominent asterism known as the Northern Cross...

. It has the traditional name Azelfafage.

In Chinese

Chinese language

The Chinese language is a language or language family consisting of varieties which are mutually intelligible to varying degrees. Originally the indigenous languages spoken by the Han Chinese in China, it forms one of the branches of Sino-Tibetan family of languages...

, , meaning Flying Serpent

Flying serpent (asterism)

Flying Serpent is an asterism in the Chinese constellation Encampment .The Jin Shu describes this asterism as: "Flying/Ascending Serpent, 22 stars north of the Ying "Camp" constellation, [a.k.a.] Heavenly Snake, chief of the water reptiles."...

, refers to an asterism consisting of π¹ Cygni, α Lacertae

Alpha Lacertae

Alpha Lacertae is an A-type main sequence star in the constellation of Lacerta...

, 4 Lacertae, π² Cygni

Pi2 Cygni

Pi² Cygni is a fourth-magnitude star in the constellation Cygnus. It has the traditional name Pennae Caudalis, which is Latin for "Tail Feathers"...

, HD 206267

HD 206267

HD 206267 is a star....

, ε Cephei

Epsilon Cephei

Epsilon Cephei is a Class F0, fourth-magnitude star in the constellation Cepheus. Epsilon Cephei is a yellow-white, Delta Scuti variable star, located about 85 light-years from Earth....

, β Lacertae, σ Cassiopeiae

Sigma Cassiopeiae

Sigma Cassiopeiae is a binary star in the constellation Cassiopeia. It is approximately 1520 light years from Earth and is a combined apparent magnitude of +4.88....

, ρ Cassiopeiae

Rho Cassiopeiae

Rho Cassiopeiae is a yellow hypergiant star in the constellation Cassiopeia. It is about away from Earth, yet can still be seen by the naked eye , as it is 550,000 times as luminous as the Sun. On average, it has an absolute magnitude of −7.5, making it one of the most luminous stars known...

, τ Cassiopeiae

Tau Cassiopeiae

Tau Cassiopeiae is a star in the constellation Cassiopeia.τ Cassiopeiae is an orange K-type giant with an apparent magnitude of +4.88. It is approximately 172.8 light years from Earth....

, AR Cassiopeiae

AR Cassiopeiae

AR Cassiopeiae is a multiple star system in the constellation of Cassiopeia. It is thought to be a septuple star system. It is only one of two star systems with a multiplicity of 7, the other being Nu Scorpii, with no physical multiple stars of greater multiplicity yet found.The star was...

, 9 Lacertae, 3 Andromedae

3 Andromedae

3 Andromedae is a star in the constellation Andromeda. Its apparent magnitude is 4.64....

, 7 Andromedae

7 Andromedae

7 Andromedae is a star in the constellation Andromeda. Its apparent magnitude is 4.53....

, 8 Andromedae

8 Andromedae

8 Andromedae is a red giant star in the constellation Andromeda. Its apparent magnitude is 4.85.-Component:-References:#...

, λ Andromedae

Lambda Andromedae

Lambda Andromedae is a binary star in the constellation Andromeda. It is approximately 84.2 light years from Earth....

, κ Andromedae

Kappa Andromedae

Kappa Andromedae is a star in the constellation Andromeda.Kappa Andromedae is a blue-white B-type subgiant with an apparent magnitude of +4.15. It is approximately 170 light years from Earth.-References:*...

, ψ Andromedae

Psi Andromedae

Psi Andromedae is a double star system in the constellation Andromeda. It is approximately 1310 light years from Earth. The system consists of a spectroscopic binary with a yellow G-type supergiant and a white A-type main sequence dwarf. It has a combined apparent magnitude of +4.97.-References:*...

 and ι Andromedae

Iota Andromedae

Iota Andromedae is a star in the constellation Andromeda.Iota Andromedae is a blue-white B-type main sequence dwarf with an apparent magnitude of +4.29...

. Consequently, π¹ Cygni itself is known as

Structure

Pi1 Cygni has apparent magnitude

Apparent magnitude

The apparent magnitude of a celestial body is a measure of its brightness as seen by an observer on Earth, adjusted to the value it would have in the absence of the atmosphere...

 +4.67 and belongs to the spectral class

Stellar classification

In astronomy, stellar classification is a classification of stars based on their spectral characteristics. The spectral class of a star is a designated class of a star describing the ionization of its chromosphere, what atomic excitations are most prominent in the light, giving an objective measure...

 B3IV. It is approximately 1680 light years from Earth

Earth

Earth is the third planet from the Sun, and the densest and fifth-largest of the eight planets in the Solar System. It is also the largest of the Solar System's four terrestrial planets...

.

Coordinates (equinox J2000.0):

• Right ascension
  Right ascension
  Right ascension is the astronomical term for one of the two coordinates of a point on the celestial sphere when using the equatorial coordinate system. The other coordinate is the declination.-Explanation:...
  
  : 21h 42m 5.7s
• Declination
  Declination
  In astronomy, declination is one of the two coordinates of the equatorial coordinate system, the other being either right ascension or hour angle. Declination in astronomy is comparable to geographic latitude, but projected onto the celestial sphere. Declination is measured in degrees north and...
  
  : +51°11'23.0"

Etymology

The name Azelfafage was from Arabian ألطلف ألفرس al thīlf al faras meaning "the horse track" or (probably) ألعزل ألدجاجة al ʽazal al-dajāja^h meaning "the tail of hen".