NGC 1502

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File:NGC 1502 2MASS.jpg
NGC 1502 in infrared

NGC 1502 (also known as the Golden Harp Cluster[1]) is a young[2] open cluster of approximately 60[3] stars in the constellation Camelopardalis, discovered by William Herschel on November 3, 1787.[4] It has a visual magnitude of 6.0 and thus is dimly visible to the naked eye.[3] This cluster is located at a distance of approximately Script error: No such module "val".[5][6] from the Sun, at the outer edge of the Cam OB1 association of co-moving stars, and is likely part of the Orion Arm.[6] The asterism known as Kemble's Cascade appears to "flow" into NGC 1502, but this is just a chance alignment of stars.[7]

The Trumpler class of NGC 1502 is II3p, indicating poorly populated cluster of stars (p) with a wide brightness range (3). The main sequence turnoff point is not well-defined, so the age estimates range from five to fifteen million years.[2] It is heavily reddened due to interstellar dust.[8] One of the brightest candidate members of the cluster is the eclipsing binary SZ Cam, which is a component of a visual double star ADS 2984.[6] There are eleven variable stars and four candidate variables among the cluster members, including a β Cep, two periodic B-type variables, 2–3 eclipsing variables, and an RR Lyrae star.[2] Five members of the cluster are chemically peculiar.[9]

See also

References

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External links

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