31 UMa
31 UMa
31 UMa is a A-type (White) star located in the constellation Ursa Major. It carries the designation 31 UMa.
Located approximately 208.0 light-years from Earth, 31 UMa resides within the broader disk of our Milky Way galaxy.
31 UMa is classified as a spectral class A star (A-type (White)) on the Harvard spectral classification system.
With an apparent magnitude of +5.27, 31 UMa 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 +0.086.
물리적 특성
| 분광형 | Class A — A-type (White) |
| 색지수 (B−V) | 0.086 |
관측
| 겉보기 등급 | +5.27 |
| 절대 등급 | 1.25 |
| 거리 | 208 ly |
| 별자리 | Ursa Major |
위치
| 적경 | 9h 55.72m |
| 적위 | 49° 49.19′ |
자주 묻는 질문
What type of star is 31 UMa?
31 UMa is a Class A — A-type (White) star.
How far is 31 UMa from Earth?
31 UMa is approximately 208.0 light-years from Earth.
Can you see 31 UMa with the naked eye?
With an apparent magnitude of 5.27, 31 UMa is visible to the naked eye.
What constellation is 31 UMa in?
31 UMa is located in the constellation Ursa Major.