Eclipsing the Moon

January 2019 lunar eclipse animation.gif
The eclipse will take place in the constellation of Cancer, just west of the Beehive Cluster.   Animation by Tomruen – Own work, CC BY-SA 4.0, Link

Even people who don’t pay attention to the sky or even notice stars, planets and the Moon’s phases will probably take a look at the total lunar eclipse on January 21, 2019. The media have been talking about it for a few days already and throwing around terms like “Supermoon” and “Blood Moon.”

Here in the Americas, the eclipse will take place between the evening of Sunday, January 20 and the early morning hours of Monday, January 21. This eclipse will be visible in Paradelle and the New York metro area starting at 9:36 pm local time. The Earth’s shadow will be covering the lunar surface until 2:48 am – so plenty of time to get outside to look before bedtime and even more viewing for insomniacs.

The eclipse will be visible in its entirety from North and South America, as well as portions of western Europe and northwest Africa. Observers at locations in Europe and much of Africa will be able to view part of the eclipse before the Moon sets in the early morning (pre-dawn) hours of January 21.

The eclipse will occur at a time when the Moon is closer to Earth (perigee) than at other times and that is where the “super” comes from. It will appear somewhat larger to most viewers.

As with most lunar eclipses, the moon will appear somewhat reddish during the eclipse because of an optical phenomenon (Rayleigh scattering) of sunlight through the Earth’s atmosphere. It’s basically the same reason that we see sunsets as more reddish than the Sun at earlier parts of the day.

If you somehow miss the event, this is the last total lunar eclipse until May 2021.

Published by

Ken

A lifelong educator on and off the Internet. Random by design and predictably irrational. It's turtles all the way down. Dolce far niente.

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