21 Eri
21 Eri
21 Eri is a K-type (Orange) star. It carries the designation 21 Eri.
Located approximately 109.9 light-years from Earth, 21 Eri resides within the broader disk of our Milky Way galaxy.
21 Eri is classified as a spectral class K star (K-type (Orange)) on the Harvard spectral classification system.
With an apparent magnitude of +5.97, 21 Eri 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 yellow hue, which corresponds to a B-V color index of +0.921.
Physical Properties
| Spectral Class | Class K — K-type (Orange) |
| Color Index (B−V) | 0.921 |
Observation
| Apparent Magnitude | +5.97 |
| Absolute Magnitude | 3.33 |
| Distance | 110 ly |
Position
| Right Ascension | 3h 39.02m |
| Declination | -5° 37.57′ |
Frequently Asked Questions
What type of star is 21 Eri?
21 Eri is a Class K — K-type (Orange) star.
How far is 21 Eri from Earth?
21 Eri is approximately 109.9 light-years from Earth.
Can you see 21 Eri with the naked eye?
With an apparent magnitude of 5.97, 21 Eri is visible to the naked eye.