CS Camelopardalis

CS Camelopardalis (CS Cam; HD 21291) is a binary star in reflection nebula VdB 14, in the constellation Camelopardalis. It is a 4th magnitude star, and is visible to the naked eye under good observing conditions.

It forms a group of stars known as the Camelopardalis R1 association, part of the Cam OB1 association. The near-identical supergiant CE Camelopardalis is located half a degree to the south.

As a binary star, CS Cam is designated as Struve 385 (STF 385, Σ385).

The primary component, CS Camelopardalis A, is a blue-white B-type supergiant with a mean apparent magnitude of 4.21^m. The star was found to be a variable star when the Hipparcos data was analyzed. It was given its variable star designation in 1999. It is classified as an Alpha Cygni type variable star and its brightness varies from magnitude 4.19^m to 4.23^m. Its companion, CS Camelopardalis B, is a magnitude 8.7^m blue giant star located 2.4 arcseconds from the primary.

• Image CS Camelopardalis
• Nebula vdB 14
• Van Den Bergh 14 and 15