Abstract
MERCURY AS AN EVENING STAR.—This planet will reach its greatest easterly elongation (18° 11′) on March 3, and set at about that date rather more than an hour and three-quarters after the sun. This will be the most favourable period of the year for viewing Mercury in the evenings. The intending observer should look towards the east-by-south region of the horizon, and when the atmosphere is clear the planet will be seen about an hour after sunset at a low altitude. It will set on February 26 at 7.5 p.m., on March 4 at 7.31 p.m., and on March 11 at 7.23 p.m.
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Our Astronomical Column . Nature 104, 674–675 (1920). https://doi.org/10.1038/104674a0
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DOI: https://doi.org/10.1038/104674a0