Phi Per
Phi Per
Phi Per is a B-type (Blue-White) star located in the constellation Perseus. It carries the designation Phi Per.
Located approximately 718.4 light-years from Earth, Phi Per resides within the broader disk of our Milky Way galaxy.
Phi Per is classified as a spectral class B star (B-type (Blue-White)) on the Harvard spectral classification system.
With an apparent magnitude of +4.01, Phi Per sits near the limit of naked-eye visibility. It can be glimpsed without optical aid under dark skies, but binoculars will make observation much easier. Observers will note its blue hue, which corresponds to a B-V color index of -0.098.
Physical Properties
| Spectral Class | B Class B — B-type (Blue-White) |
| Color Index (B−V) | -0.098 |
Observation
| Apparent Magnitude | +4.01 |
| Absolute Magnitude | -2.70 |
| Distance | 718 ly |
| Constellation | Perseus |
Position
| Right Ascension | 1h 43.66m |
| Declination | 50° 41.32′ |
Frequently Asked Questions
What type of star is Phi Per?
Phi Per is a Class B — B-type (Blue-White) star.
How far is Phi Per from Earth?
Phi Per is approximately 718.4 light-years from Earth.
Can you see Phi Per with the naked eye?
With an apparent magnitude of 4.01, Phi Per is visible to the naked eye.
What constellation is Phi Per in?
Phi Per is located in the constellation Perseus.