4 Her
4 Her
4 Her is a B-type (Blue-White) star located in the constellation Hercules. It carries the designation 4 Her.
Located approximately 536.4 light-years from Earth, 4 Her resides within the broader disk of our Milky Way galaxy.
4 Her is classified as a spectral class B star (B-type (Blue-White)) on the Harvard spectral classification system.
With an apparent magnitude of +5.73, 4 Her 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 -0.102.
Physical Properties
| Spectral Class | Class B — B-type (Blue-White) |
| Color Index (B−V) | -0.102 |
Observation
| Apparent Magnitude | +5.73 |
| Absolute Magnitude | -0.35 |
| Distance | 536 ly |
| Constellation | Hercules |
Position
| Right Ascension | 15h 55.51m |
| Declination | 42° 33.97′ |
Frequently Asked Questions
What type of star is 4 Her?
4 Her is a Class B — B-type (Blue-White) star.
How far is 4 Her from Earth?
4 Her is approximately 536.4 light-years from Earth.
Can you see 4 Her with the naked eye?
With an apparent magnitude of 5.73, 4 Her is visible to the naked eye.
What constellation is 4 Her in?
4 Her is located in the constellation Hercules.