Ake Wallenquist

Ake Wallenquist

m103,open cluster m103,ngc 581

Messier 103

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Messier 103 (M103) is an open star cluster located in the northern constellation Cassiopeia.

The cluster lies at a distance of 10,000 light years from Earth and has an apparent magnitude of 7.4. Its designation in the New General Catalogue is NGC 581.
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ngc 7654,m52,open cluster

Messier 52

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Messier 52 (M52) is a bright open cluster located in the northern constellation Cassiopeia.

The cluster has an apparent magnitude of 5.0 and lies at an approximate distance of 5,000 light years from Earth. It has the designation NGC 7654 in the New General Catalogue.
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