Delta Cephei (δ Cep, δ Cephei) is a quadruple star system [4] located approximately 887 light-years away in the northern constellation of Cepheus, the King. At this distance, the visual magnitude of the star is diminished by 0.23 as a result of extinction caused by gas and dust along the line of sight. [ 6 ]

Sep 24, 2024 · The star Delta Cephei was a key to determining distances in the universe. Delta Cephei, in the constellation Cepheus the King, is a variable star that changes in brightness with clock-like...

δ Cephei is a variable and multiple supergiant star of magnitude 3.75 in the constellation of Cepheus. Find complete information about δ Cephei on TheSkyLive.com.

Delta Cephei is the prototype of the Cepheid class of variable stars. With a change in visual magnitude of 3.5 to 4.4, delta Cep's entire range of variability can be observed with the unaided eye. Its period of 5.366 days makes it an attractive candidate for anyone anxious to obtain a star's full change in brightness in a short period of time.

Delta Cephei, prototype star of the class of Cepheid variables, in the constellation Cepheus. Its apparent visual magnitude at minimum is 4.34 and at maximum 3.51, changing in a regular cycle of about five days and nine hours.

DELTA CEP (Delta Cephei). Surely among the most famed of all stars, fourth magnitude (4.1 or thereabouts) Delta Cephei, set at the southeastern corner of dim Cepheus (the King), does not even have a proper name .

Delta Cephei is a yellow-hued supergiant star 980 light-years from Earth and the prototype of the class of the Cepheid variables. It was discovered to be variable by John Goodricke in 1784. It varies between 3.5 m and 4.4 m over a period of 5 days and 9 hours.

Sep 16, 2013 · Delta Cephei is a Type II Cepheid. It has a period of five days 8 hours 47.5 minutes and it appears to vary in magnitude between 3.6 and 4.3. It's approximately 2,000 times more luminous than the...

Apr 2, 2025 · Alrediph, also known as Delta Cephei is a very luminous supergiant star located in the constellation of Cepheus, King of Ethiopia. It is not part of the Cepheus constellation outline but is within the borders of the constellation.

Oct 12, 2016 · The famous variable star Delta Cephei unlocks a box of deep-sky treasures in a little-visited corner of Cepheus, the King. Cepheus, the King, and the triangle of naked-eye stars headed up by Delta (δ) Cephei are well placed in the northern sky now through mid-winter.