Home > Ephemeris Program, GTAS Outreach Event, Lunar Eclipse > 07/10/2017 – Ephemeris – There’s a penumbral eclipse of the Moon tonight

07/10/2017 – Ephemeris – There’s a penumbral eclipse of the Moon tonight

February 10, 2017

Ephemeris for Friday, February 10th.  The Sun will rise at 7:49.  It’ll be up for 10 hours and 15 minutes, setting at 6:04.  The Moon, at full today, will rise at 5:58 this evening.

This evening there will be a penumbral eclipse of the moon, which will reach its peak at 7:45 p.m.  The moon, on its left side will be slightly darkened as the Moon passes through the Earth’s partial outer shadow where the Sun is only partially blocked by the Earth.  Only the left side of he Moon will show the effect, which is best seen wearing sunglasses to reduce the Moon’s glare.  The Northwestern Michigan College’s Rogers Observatory will be open to view the event from 6:45 to 8:45 p.m. but only if it’s clear.  This event does not require a telescope to appreciate, but it might be nice to view it with others.  The observatory is located south of Traverse City on Birmley Road between Keystone and Garfield roads.

Times are for the Traverse City/Interlochen area of Michigan. They may be different for your location.


Lunar Eclipse Geometry

How lunar eclipses occur. For this eclipse the Moon will miss the umbra but will penetrate the deep into the penumbra.  Credit NASA/Fred Espenak.

Eclipse Diagram

Diagram of the penumbral lunar eclipse on the evening of February 10, 2016 for the Eastern time zone. Diagram adapted from Fred Espenak, NASA GSFC.

February 10, 2017 Penumbral Eclipse of the Moon

This is the maximum of the February 10th penumbral lunar eclipse. The Moon will appear to move diagonally down to the left. It is shown at maximum eclipse at 7:45 p.m. (0:45 UT February 11). The diagram is oriented for viewing from northern Michigan. Created using Cartes du Ciel.

NASA’s pdf page on this eclipse:  https://eclipse.gsfc.nasa.gov/LEplot/LEplot2001/LE2017Feb11N.pdf

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