The editors of Sky & Telescope make every effort to provide accurate information, but errors do sometimes slip through. We correct all mistakes online as well as printing corrections in the magazine. So if you see something questionable in the magazine, check below to see if it's a known problem.

This article lists all known errors in issues of Sky & Telescope for 2019. See also the errata listings for other years.

January 2020

Page 28: The sundial diagram illustrating the Sun's position at various times and dates incorrectly showed the hour lines radiating from the zenith. They actually radiate from the north celestial pole.

Sundial
Gregg Dinderman / S&T

Page 53: J. Wesley Simpson photographed Kordylewski's clouds aboard NASA's Convair 990 laboratory aircraft in 1966, not aboard its Kuiper Airborne Observatory in 1967.

March 2020

Page 60: A six-minute error in determining Greenwich Time would lead to a navigator's error of 90 nautical miles, not six, when sailing near the equator.

Page 61: When computing longitude, one should subtract Greenwich Time from local time and multiply by 15, not divide.

April 2020

Page 53: On the elevation graph of the Orientale basin the average elevation is in meters not kilometers. See the correct graph below.

Orientale basin on the Moon's farside is about 7km deep. That's how thick a filling of lava it would take to make it look like Mare Imbrium, with only the highest peaks of Montes Cordillera visible.
Gregg Dinderman / S&T

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