20 Oph
20 Oph
20 Oph is a F-type (Yellow-White) star. It carries the designation 20 Oph.
Located approximately 104.3 light-years from Earth, 20 Oph resides within the broader disk of our Milky Way galaxy.
20 Oph is classified as a spectral class F star (F-type (Yellow-White)) on the Harvard spectral classification system.
With an apparent magnitude of +4.64, 20 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 white hue, which corresponds to a B-V color index of +0.478.
Physical Properties
| Spectral Class | Class F — F-type (Yellow-White) |
| Color Index (B−V) | 0.478 |
Observation
| Apparent Magnitude | +4.64 |
| Absolute Magnitude | 2.12 |
| Distance | 104 ly |
Position
| Right Ascension | 16h 49.83m |
| Declination | -10° 46.98′ |
Frequently Asked Questions
What type of star is 20 Oph?
20 Oph is a Class F — F-type (Yellow-White) star.
How far is 20 Oph from Earth?
20 Oph is approximately 104.3 light-years from Earth.
Can you see 20 Oph with the naked eye?
With an apparent magnitude of 4.64, 20 Oph is visible to the naked eye.