21 Peg
21 Peg
21 Peg is a B-type (Blue-White) star located in the constellation Pegasus. It carries the designation 21 Peg.
Located approximately 629.6 light-years from Earth, 21 Peg resides within the broader disk of our Milky Way galaxy.
21 Peg is classified as a spectral class B star (B-type (Blue-White)) on the Harvard spectral classification system.
With an apparent magnitude of +5.83, 21 Peg 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 -0.050.
Physical Properties
| Spectral Class | Class B — B-type (Blue-White) |
| Color Index (B−V) | -0.050 |
Observation
| Apparent Magnitude | +5.83 |
| Absolute Magnitude | -0.60 |
| Distance | 630 ly |
| Constellation | Pegasus |
Position
| Right Ascension | 22h 3.32m |
| Declination | 11° 23.19′ |
Frequently Asked Questions
What type of star is 21 Peg?
21 Peg is a Class B — B-type (Blue-White) star.
How far is 21 Peg from Earth?
21 Peg is approximately 629.6 light-years from Earth.
Can you see 21 Peg with the naked eye?
With an apparent magnitude of 5.83, 21 Peg is visible to the naked eye.
What constellation is 21 Peg in?
21 Peg is located in the constellation Pegasus.