Icy Moon

The Moon has sailed into the north and hangs as “an icicle in a Dutchman’s beard,” like Sir Andrew Aguecheek in “Twelfth Night.” I mean to say, it reaches its northernmost point for the year.

See the end note about enlarging illustrations.

The northernmost moment, with the Moon at declination 27.5°, is November 12 at 14h Universal Time, but the Moon, several days past the full-phase moment that gave us the eclipse of November 8, is in the morning sky, and the nearest morning to the time is that of Nov. 13.

As shown in this part of a chart in Astronomical Calendar 2022,

the Moon’s track continually shifts (precesses) in relation to the ecliptic; the thick line is the track in this year’s January, the thin line is the track in December. This is a year in which the general result is what I call a “hilly” orbit, passing well north of the northernmost ecliptic – though not yet as hilly as it will be in 2025.

During November 13 and 14 the Moon passes about as close south of the Twin stars, Castor and Pollux, as it can. But it is never quite far enough north to occult (hide) Pollux, as it does the other first-magnitude stars near the ecliptic: Aldebaran, Regulus, Spica, and Antares.

 

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ILLUSTRATIONS in these posts are made with precision but have to be inserted in another format.  You may be able to enlarge them on your monitor.  One way: right-click, and choose “View image” or “Open image in new tab”, then enlarge.  Or choose “Copy image”, then put it on your desktop, then open it.  On an iPad or phone, use the finger gesture that enlarges (spreading with two fingers, or tapping and dragging with three fingers).  Other methods have been suggested, such as dragging the image to the desktop and opening it in other ways.

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