2016 Martian Winter Solstice

A Martian Year

A Martian Year – at One Earth Month Intervals

   Monday November 28th is the winter solstice on the planet Mars as the planet transitions from autumn to winter during its 684 Earth day orbit around the Sun. Seasons on Mars are marked by the planet’s heliocentric longitude coordinates using the position of Mars along its orbit around the Sun. Each seasonal start/ending point is 90 degrees apart, but because of its elliptical-shaped orbit each Martian season is of varying lengths.

   I’m not exactly sure why this particular date is used but by international agreement astronomers have selected 11 April, 1955 as 0 degrees for year 1 of this Martian calendar. What this means is that on Monday November 28th, Earth time, it is the start of winter for year 33 using the aforementioned calendar system.

Year 33
0 degrees — Spring Equinox — June 18 2015
90 degrees — Summer solstice — January 03 2016
180 degrees — Fall Equinox — July 04 2016
270 degrees — Winter Solstice — November 28 2016
Year 34
0 degrees — Spring Equinox — May 05 2017
90 degrees — Summer solstice — November 20 2017
180 degrees — Fall Equinox — May 20 2018
270 degrees — Winter Solstice — October 16 2018

   On the evening of Monday November 28th the planet Mars will be over the southwestern horizon at sunset and Mars will set a couple of hours later. Mars is within the constellation of Capricornus the Sea Goat.

   Learn a little (or a lot) more about the exploration of Mars at the NASA Journey to Mars web site.

Here is approximately 3 minutes worth of Mars from the Orbit performance.

This video doesn’t exist



Click here to go to the Qué tal in the Current Skies web site for monthly observing information, or here to return to bobs-spaces.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

This site uses Akismet to reduce spam. Learn how your comment data is processed.