description vdB 4 Overview
vdB 4 is a reflection nebula listed in Sidney van den Bergh's catalog of reflection nebulae, published in 1966. It lies in the constellation Cassiopeia and is associated with the star HIP 3401 and the nearby open cluster region around NGC 225. Unlike an emission nebula, a reflection nebula is visible because dust scatters light from nearby stars, producing a predominantly blue appearance in astronomical images.
help vdB 4 FAQ
What kind of object is vdB 4?
vdB 4 is a reflection nebula listed in Sidney van den Bergh's catalog of reflection nebulae. It shines mainly by reflecting light from nearby stars rather than producing its own visible emission.
Where is vdB 4 located?
vdB 4 lies in the constellation Cassiopeia. It is associated with the star HIP 3401 and the nearby open-cluster region around NGC 225.
How is a reflection nebula different from an emission nebula?
A reflection nebula reflects light from nearby stars, while an emission nebula glows through energized gas. vdB 4 is identified as the reflection type.
Which catalog includes vdB 4?
It appears in Sidney van den Bergh's catalog of reflection nebulae. That catalog was published in 1966.
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