Beta Cephei bore the traditional name Alfirk, derived from the Arabic الفرقة al-firqah "the flock" (of sheep). With Alpha Cephei (Alderamin) and Eta Cephei (Alkidr), they were Al Kawākib al Firḳ الكوكب الفرق "the stars of the flock" by Ulug Beg.

Apr 2, 2025 · Alfirk (Beta Cephei) is a blue giant star in the constellation of Cepheus. It can be seen in the northern hemisphere night sky. Alfirk distance from Earth is 685.22 light years away.

Alfirk had an odd reputation as a "B-emission" star with a radiating circumstellar disk, the best known of which are Gamma Cassiopeiae and Zeta Tauri. The "Be" phenomenon is related in an unknown way to fast rotation.

The star’s traditional name, Alfirk, derives from the Arabic al-firqah, which means “the flock.” Alfirk serves as the prototype for a class of stars known as the Beta Cephei variable stars. These stars are main sequence stars with masses ranging between 7 and 20 solar masses.

Aug 28, 2021 · Beta Cephei, known by its traditional name of Alfirk, makes its home in the fall constellation of Cepheus. The beautiful blue star is a giant burning at a temperature of 26,000 Kelvin (around 46,000 degrees Fahrenheit)!

Alfirk, also designated as β Cephei, is a variable and multiple sub-giant star of magnitude 3.23 in the constellation of Cepheus. Find complete information about Alfirk on TheSkyLive.com.

Alfirk (Beta Cephei) is the second brightest star in the constellation Cepheus and the prototype Beta Cephei star. Its Arabic name (also spelled "Alphirk") may refer to "the two stars" (the other being Alderamin) or may come from a phrase meaning "flock of sheep."

Feb 19, 2016 · – Alfirk (Beta Cephei), the second brightest star in Cepheus, is a triple star system about 690 light years from our solar system with a combined apparent magnitude that varies between 3.15 to 3.21. Its main component star is a blue giant (B1 IV) which has 6 times our sun’s radius and 12 times its mass.

Alfirk (Arabic for “the Flock” according to Allen p.157) is now current for this star, although originally given to alpha (α Alderamin); and Ficares is occasionally seen, from one of the degenerated names for the whole constellation that also may have been applied by the Arabs to others of its brighter stars.

Eta Cephei, along with α Cephei (Alderamin) and β Cep (Alfirk), were identified as Al Kawākib al Firḳ (الكوكب الفرق), meaning "the Stars of The Flock" by Ulug Beg. Together with θ Cephei , it form Al Kidr .