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Photoelectric Observations of the Lunar Occultation of the Star SAO 79361 during a Total Lunar Eclipse

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Abstract

The results of photoelectric observation of the occultation of the visual binary star SAO 79361 = ADS 6038 by the Moon during the total lunar eclipse of January 9, 1982 are presented. The upper limit of the angular diameter of the brighter component A is estimated to be dul ≃ 0.0011″ based on direct measurements, which is in agreement with indirect estimates. Accurate estimates for the magnitude difference between components A and B, their angular separation, p ≃ 3.2″, and the inclination of the Moon’s edge’s at the point of occultation to the mean lunar horizon, θ ≃ +25°, are obtained. The time of the geometrical occultation of the center of the stellar disk of component A is determined with an accuracy of 1 ms. The results obtained for this star are unique among observations worldwide.

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Authors and Affiliations

  1. Sternberg Astronomical Institute, Lomonosov Moscow State University, Moscow, 119991, Russia

    E. M. Trunkovskii

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  1. E. M. Trunkovskii
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Correspondence to E. M. Trunkovskii.

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Original Russian Text © E.M. Trunkovskii, 2018, published in Astronomicheskii Zhurnal, 2018, Vol. 95, No. 7, pp. 501–506.

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Trunkovskii, E.M. Photoelectric Observations of the Lunar Occultation of the Star SAO 79361 during a Total Lunar Eclipse. Astron. Rep. 62, 469–473 (2018). https://doi.org/10.1134/S1063772918060070

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  • DOI: https://doi.org/10.1134/S1063772918060070

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