21 Aqr
21 Aqr
21 Aqr is a K-type (Orange) star located in the constellation Aquarius. It carries the designation 21 Aqr.
Located approximately 388.3 light-years from Earth, 21 Aqr resides within the broader disk of our Milky Way galaxy.
21 Aqr is classified as a spectral class K star (K-type (Orange)) on the Harvard spectral classification system.
With an apparent magnitude of +5.48, 21 Aqr 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 red hue, which corresponds to a B-V color index of +1.451.
물리적 특성
| 분광형 | K Class K — K-type (Orange) |
| 색지수 (B−V) | 1.451 |
관측
| 겉보기 등급 | +5.48 |
| 절대 등급 | 0.10 |
| 거리 | 388 ly |
| 별자리 | Aquarius |
위치
| 적경 | 21h 25.28m |
| 적위 | -3° 33.40′ |
Frequently Asked Questions
What type of star is 21 Aqr?
21 Aqr is a Class K — K-type (Orange) star.
How far is 21 Aqr from Earth?
21 Aqr is approximately 388.3 light-years from Earth.
Can you see 21 Aqr with the naked eye?
With an apparent magnitude of 5.48, 21 Aqr is visible to the naked eye.
What constellation is 21 Aqr in?
21 Aqr is located in the constellation Aquarius.