Photoelectric observations in a wide‐field area around the Praesepe cluster

Abstract The PPM catalogue numbers, photoelectric magnitudes V, color‐indexes U – B, B – V, V – R and rms errors of their determinations for 51 stars of the secondary wide‐angle photoelectric standard are published. The catalogue accuracy of quantities mentioned above is 0.007, 0.015, 0.006, 0.006 mag, respectively. A list of ten stars which are probably variable is published.

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