51 Oph
51 Oph
51 Oph is a A-type (White) star. It carries the designation 51 Oph.
Located approximately 405.7 light-years from Earth, 51 Oph resides within the broader disk of our Milky Way galaxy.
51 Oph is classified as a spectral class A star (A-type (White)) on the Harvard spectral classification system.
With an apparent magnitude of +4.78, 51 Oph 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 +0.016.
Physical Properties
| Spectral Class | Class A — A-type (White) |
| Color Index (B−V) | 0.016 |
Observation
| Apparent Magnitude | +4.78 |
| Absolute Magnitude | -0.69 |
| Distance | 406 ly |
Position
| Right Ascension | 17h 31.42m |
| Declination | -23° 57.76′ |
Frequently Asked Questions
What type of star is 51 Oph?
51 Oph is a Class A — A-type (White) star.
How far is 51 Oph from Earth?
51 Oph is approximately 405.7 light-years from Earth.
Can you see 51 Oph with the naked eye?
With an apparent magnitude of 4.78, 51 Oph is visible to the naked eye.