66 Oph
66 Oph
66 Oph is a B-type (Blue-White) star. It carries the designation 66 Oph.
Located approximately 651.0 light-years from Earth, 66 Oph resides within the broader disk of our Milky Way galaxy.
66 Oph is classified as a spectral class B star (B-type (Blue-White)) on the Harvard spectral classification system.
With an apparent magnitude of +4.79, 66 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 hue, which corresponds to a B-V color index of -0.100.
Physical Properties
| Spectral Class | Class B — B-type (Blue-White) |
| Color Index (B−V) | -0.100 |
Observation
| Apparent Magnitude | +4.79 |
| Absolute Magnitude | -1.71 |
| Distance | 651 ly |
Position
| Right Ascension | 18h 0.26m |
| Declination | 4° 22.12′ |
Frequently Asked Questions
What type of star is 66 Oph?
66 Oph is a Class B — B-type (Blue-White) star.
How far is 66 Oph from Earth?
66 Oph is approximately 651.0 light-years from Earth.
Can you see 66 Oph with the naked eye?
With an apparent magnitude of 4.79, 66 Oph is visible to the naked eye.