21 Com
21 Com
21 Com is a A-type (White) star. It carries the designation 21 Com.
Located approximately 269.8 light-years from Earth, 21 Com resides within the broader disk of our Milky Way galaxy.
21 Com is classified as a spectral class A star (A-type (White)) on the Harvard spectral classification system.
With an apparent magnitude of +5.47, 21 Com 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 +0.056.
Physical Properties
| Spectral Class | Class A — A-type (White) |
| Color Index (B−V) | 0.056 |
Observation
| Apparent Magnitude | +5.47 |
| Absolute Magnitude | 0.88 |
| Distance | 270 ly |
Position
| Right Ascension | 12h 31.01m |
| Declination | 24° 34.03′ |
Frequently Asked Questions
What type of star is 21 Com?
21 Com is a Class A — A-type (White) star.
How far is 21 Com from Earth?
21 Com is approximately 269.8 light-years from Earth.
Can you see 21 Com with the naked eye?
With an apparent magnitude of 5.47, 21 Com is visible to the naked eye.