9 Lac

9 Lac

9 Lac is a A-type (White) star. It carries the designation 9 Lac.

Located approximately 171.7 light-years from Earth, 9 Lac resides within the broader disk of our Milky Way galaxy.

9 Lac is classified as a spectral class A star (A-type (White)) on the Harvard spectral classification system.

With an apparent magnitude of +4.64, 9 Lac 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 +0.254.

คุณสมบัติทางกายภาพ

ประเภทสเปกตรัม Class A — A-type (White)
ดัชนีสี (B−V) 0.254

การสังเกต

โชติมาตรปรากฏ +4.64
โชติมาตรสัมบูรณ์ 1.03
ระยะทาง 172 ly

ตำแหน่ง

ไรต์แอสเซนชัน 22h 37.37m
เดคลิเนชัน 51° 32.71′

คำถามที่พบบ่อย

What type of star is 9 Lac?
9 Lac is a Class A — A-type (White) star.
How far is 9 Lac from Earth?
9 Lac is approximately 171.7 light-years from Earth.
Can you see 9 Lac with the naked eye?
With an apparent magnitude of 4.64, 9 Lac is visible to the naked eye.