Home > Ephemeris Program, Jupiter, Observing > 01/13/2014 – Ephemeris – Jupiter’s Great Red Spot

01/13/2014 – Ephemeris – Jupiter’s Great Red Spot

January 13, 2014

Ephemeris for Monday, January 13th.  The sun will rise at 8:16.  It’ll be up for 9 hours and 9 minutes, setting at 5:25.   The moon, 2 days before full, will set at 6:49 tomorrow morning.

Jupiter is my youngest granddaughter’s favorite planet.  She has books and pictures of Jupiter sporting its famous Great Red Spot.  When I was a teenager in the 1950s, a bit older than she is now the Great Red Spot on Jupiter was indeed bright red.  You couldn’t miss it in even the smallest telescopes.  Since the early 1970s the spot has faded.  At best it’s a pastel pink.  The Great Red Spot appears to be a permanent feature of the Jovian atmosphere, an anti-cyclone that distorts the dark belts and bright zones of the planet.  The dark belts are thought to be where air is sinking and the white zones are upwelling clouds.  The Great Red Spot wanders east and west at about the same latitude within the atmosphere.  I hope it gets really red soon.

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


Jupiter with its Great Red Spot

Jupiter with its Great Red Spot November 18, 2012 by Scott Anttila.

%d bloggers like this: