Home > Ephemeris Program, Phases, The Moon > 10/10/14 – Ephemeris – Hunters Moon effect… Same as the Harvest Moon effect

10/10/14 – Ephemeris – Hunters Moon effect… Same as the Harvest Moon effect

October 10, 2014

Ephemeris for Friday, October 10th.  The sun will rise at 7:51.  It’ll be up for 11 hours and 15 minutes, setting at 7:06.   The moon, 2 days past full, will rise at 8:41 this evening.

Let’s talk about the Moon one more time this week.  Wednesday’s lunar eclipse came on the hunter’s moon.  Like the harvest moon, the previous full moon, the bright Moon lingers in the twilit sky.  We are two days past full moon and the Moon rises just before the end of twilight.  50 minutes is the average night to night advance in moon rise times.  Depending on what part of the sky the moon is in, the nightly delay in rise times can be as little as 35 minutes or as long as an hour and 5 minutes.  The  smallest moon rise advance is when the moon is near the constellation Pisces and the longest advance time is when the moon is near Virgo.  It doesn’t matter the season, it’s where the moon is in the sky.  We only notice it when the moon is near full.

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

Addendum (4 p.m.)

Hunter's Moon path

The Hunters/Harvest Moon effect for 2014. Note the shallowness of the Moon’s path. Created using Cartes du Ciel (Sky Charts).

Worm Moon Effect 2014

The Worm (March Full Moon) Moon effect for 2014. Note the the steepness of the Moon’s path. Created using Cartes du Ciel (Sky Charts).

Note that the brown shading on the bottom of the images is below the horizon.  The yellow line is the ecliptic or plane of the Earth’s orbit.  The motion of all the objects in the sky due to the Earth’s rotation is to the upper right parallel to the celestial equator line that crosses the horizon below the E or east compass point.  The red smudge on the ecliptic is the display of the Earth’s shadow for the 5 days of the display.  Note in the top image that early on October 8th the Moon passes through the Earth’s shadow, which gave us the lunar eclipse that morning.  On the Worm Moon image the Moon misses the Earth’s shadow.  However you can see that the Moon is tracking toward the ecliptic.  The next month on April 15th, the Moon did indeed pass through the earth’s shadow, giving us a lunar eclipse that morning.

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