Home > Ephemeris Program, Meteor Shower, Month preview > 12/01/2014 – Ephemeris – Previewing December skies

12/01/2014 – Ephemeris – Previewing December skies

December 1, 2014

Ephemeris for Monday, December 1st.  The sun will rise at 7:59.  It’ll be up for 9 hours and 4 minutes, setting at 5:03.   The moon, 2 days past first quarter, will set at 3:32 tomorrow morning.

Let’s preview December’s skies.  Winter will officially arrive on the 21st at 6:03 p.m., the winter solstice.  The noontime sun will dip from 23 ½ degrees to a bit less than 22 degrees above the southern horizon on that day.  There will be little movement in the sunset times: In the Traverse City/Interlochen area this will be from 5:03 today, down to 5:02 and then advancing to 5:11 at the end of the month.  There is more movement in the sunrise times which will advance from 7:59 this morning to 8:19 on the 31st.  The big event in December will be the Geminid meteor shower whose maximum is on the morning of the 14th.  But will be hampered by the moon after 12:17 a.m that morning.

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

Addendum

Star Chart

Star Chart for December 2014. Created using my LookingUp program.

The Moon is not plotted.  The planets and stars are plotted for the 15th at 9 p.m.  That is chart time.

Evening astronomical twilight ends at 6:48 p.m. on December 1st, decreasing  one minute by the 9th and increasing to 6:57 p.m. on the 31st.

Morning astronomical twilight starts at 6:14 a.m. on December 1st, and increasing to 6:33 a.m. on the 31st.

Add a half hour to the chart time every week before the 15th and subtract and hour for every week after the 15th.

For a list of constellation names to go with the abbreviations click here.

Also shown is the Summer Triangle in red. Clockwise from the top star is Deneb in Cygnus, Vega in  Lyra and Altair in Aquila.

The green pointer from the Big Dipper is:

  • Pointer stars at the front of the bowl of the Big Dipper point to Polaris the North Star.

The Geminid radiant is shown in yellow and marked GemR.

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