In Evidence
Other stars in Cepheus
- Alderamin
- Errai
- Alfirk
- ζ Cephei
- η Cephei
- ι Cephei
- δ Cephei
- μ Cephei
- ε Cephei
- θ Cephei
- HR285
- ν Cephei
- Kurhah
- κ Cephei
- π Cephei
- HR7955
- 11 Cephei
- HR8748
- 9 Cephei
- HR8702
- ο Cephei
- 24 Cephei
- HR8383
- 16 Cephei
- HR9013
- λ Cephei
- HR2609
- HR1523
- 31 Cephei
- HR1230
- 19 Cephei
- HR8324
- 6 Cephei
- 30 Cephei
- HR8779
- HR8472
- HR8546
- 20 Cephei
- 18 Cephei
- HR8479
- HR1317
- 7 Cephei
- HR961
- HR1304
- 26 Cephei
- HR8557
- HR881
- HR8474
- ρ2 Cephei
- HR8049
- 12 Cephei
- HR8243
- HR8851
- 14 Cephei
- HR1289
- HR8938
- 4 Cephei
- HR8696
- HR8918
- HR965
- HR240
- HR8281
- HR8119
- HR333
- HR8164
- HR8599
- HR8357
- 25 Cephei
- HR7944
- HR774
- HR8625
- HR7742
- HR8483
- 13 Cephei
- HR8065
- ρ1 Cephei
- HR8952
- HR8844
- HR1107
- HR8375
- HR8099
- HR8506
- HR8736
- HR8112
- HR8388
- HR906
- HR8327
- HR8971
- HR8168
- HR9005
- HR8239
- HR8150
- HR8972
- HR8707
- HR20
- HR7925
- HR8537
- HR572
- HR8043
- HR597
- HR8683
- HR386
- HR8493
- HR8312
- HR8224
- HR1885
- HR8179
- HR8490
- HR8226
- HR8374
- HR8174
- HR7938
- HR8535
- HR8347
- HR8811
- HR8029
- HR306
- HR8808
- HR357
- HR8568
- HR8342
- HR312
- HR8476
- HR7940
- HR8442
- HR8598
- HR55
- HR8395
- HR8677
- HR8361
- HR8473
- HR8867
- HR8434
- HR9038
- HR8133
- HR158
- HR7967
- HR8153
- HR8384
- HR8745
- HR7993
- HR1616
- HR8109
- HR9034
- HR8389
- HR9056
- HR1714
- HR8595
- HR8525
- HR8399
- HR8777
- HR8550
- HR8113
Alfirk - β Cephei (beta Cephei)
Alfirk, also designated as β Cephei (beta Cephei), is a variable and multiple sub-giant star of spectral class B1 in the constellation of Cepheus.
Alfirk visual magnitude is 3.23. Because of its moderate brightness, Alfirk is easily visible to the naked eye from locations with dark skies, while it might be barely visible, or not visible at all, from light-polluted skies.
Celestial Coordinates
Apparent
J2000
Galactic Coordinates
Finder Chart
Magnitude, Color, Spectral Class
The red dot in the diagram below shows where Alfirk is situated in the Hertzsprung–Russell diagram.
Star System Properties
Alfirk is a visual double star which can be observed with the help of small or medium telescopes. The table below shows key information about the Alfirk double sysyem:
Distance, Radial Speed, Proper Motion
Alfirk is distant 594.89 light years from the Sun and it is moving towards the Sun at the speed of 8 kilometers per second.
Alternative Designations
Visibility from Your Location
Alfirk - β Cephei (beta Cephei) is circumpolar and transits at 05:40 UTC (altitude: 70.8°)