100 Her
100 Her
100 Her is a A-type (White) star located in the constellation Hercules. It carries the designation 100 Her.
Located approximately 125.8 light-years from Earth, 100 Her resides within the broader disk of our Milky Way galaxy.
100 Her is classified as a spectral class A star (A-type (White)) on the Harvard spectral classification system.
With an apparent magnitude of +5.79, 100 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-white hue, which corresponds to a B-V color index of +0.127.
Physical Properties
| Spectral Class | Class A — A-type (White) |
| Color Index (B−V) | 0.127 |
Observation
| Apparent Magnitude | +5.79 |
| Absolute Magnitude | 2.86 |
| Distance | 126 ly |
| Constellation | Hercules |
Position
| Right Ascension | 18h 7.83m |
| Declination | 26° 5.84′ |
Frequently Asked Questions
What type of star is 100 Her?
100 Her is a Class A — A-type (White) star.
How far is 100 Her from Earth?
100 Her is approximately 125.8 light-years from Earth.
Can you see 100 Her with the naked eye?
With an apparent magnitude of 5.79, 100 Her is visible to the naked eye.
What constellation is 100 Her in?
100 Her is located in the constellation Hercules.