4 Lac

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4 Lac is a B-type (Blue-White) star. It carries the designation 4 Lac.

At a distance of roughly 2,249 light-years, 4 Lac is a distant star lying deep within the Milky Way galaxy.

4 Lac is classified as a spectral class B star (B-type (Blue-White)) on the Harvard spectral classification system.

With an apparent magnitude of +4.55, 4 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 +0.092.

物理的特性

スペクトル型	B Class B — B-type (Blue-White)
色指数 (B−V)	0.092

観測

見かけの等級	+4.55
絶対等級	-4.64
距離	2,249 ly

位置

赤経	22^h 24.52^m
赤緯	49° 28.58′

Frequently Asked Questions

What type of star is 4 Lac?

4 Lac is a Class B — B-type (Blue-White) star.

How far is 4 Lac from Earth?

4 Lac is approximately 2,249.4 light-years from Earth.

Can you see 4 Lac with the naked eye?

With an apparent magnitude of 4.55, 4 Lac is visible to the naked eye.