Ephemeris Star Charts – December 2018

Contents:


The charts contain the entire dome of the sky as seen from around 45 degrees north latitude and at the dates and times for the locations listed below.

Planet positions are plotted for the 15th of the month. The moon is not shown. To track the planet positions at weekly intervals go to my Ephemeris Blog for my Wednesday posting at bobmoler.wordpress.com.

The charts contain the entire dome of the sky as seen from around 45 degrees north latitude and at the dates and times for the locations listed below.

December Evening Star Chart

Date

Grand Traverse region, Michigan - Eastern Time

1st.

11:00 p.m. EST

8th.

9:30 p.m. EDT

15th.

9:00 p.m. EDT

22nd.

8:30 p.m. EDT

29th.

8:00 p.m. EDT

December Morning Star Chart

For early birds I’m including a morning star chart too, which shows the stars we’ll see in the evening 3 months from now.

Date

Grand Traverse region, Michigan - Eastern Time

1st.

8:00 a.m. EST

8th.

6:30 a.m. EDT

15th.

6:00 a.m. EDT

22nd.

5:30 a.m. EDT

29th.

5:00 a.m. EDT

If you want to convert the above times for your locality in North America click here.

The outer edge of the chart is the horizon with the compass points marked. The chart is oriented as one is looking south. The constellation outlines in magenta are those of the Zodiac. The magenta line is the ecliptic, the path of the sun. The white line that passes through the east and west compass points is the celestial equator, above the earth's equator. The white lines that cross in the north at the north celestial pole are major right ascension lines and are like meridians on the earth.

All constellations shown have the standard three letter abbreviation. Not all constellations are shown, faint and small ones were deleted for overall clarity. The constellation abbreviations, names and bright star names are found here.

Also on the sky dome are helps to locate other stars and constellations from the Big Dipper, and asterisms.

Twilight




Time zone=EDT





Morning twilight

Evening twilight

Dark night

Moon

Date

Astronomical

Nautical

Nautical

Astronomical

Start

End

Illum.

2018-12-01

6h20m

6h55m

18h16m

18h51m

18h51m

1h29m

0.33

2018-12-02

6h21m

6h56m

18h15m

18h50m

18h50m

2h39m

0.23

2018-12-03

6h22m

6h57m

18h15m

18h50m

18h50m

3h48m

0.14

2018-12-04

6h23m

6h58m

18h15m

18h50m

18h50m

4h56m

0.07

2018-12-05

6h24m

6h59m

18h15m

18h50m

18h50m

6h03m

0.03

2018-12-06

6h25m

7h00m

18h15m

18h50m

18h50m

6h25m

0.00

2018-12-07

6h26m

7h01m

18h15m

18h50m

18h50m

6h26m

0.00

2018-12-08

6h26m

7h02m

18h15m

18h50m

18h50m

6h26m

0.02

2018-12-09

6h27m

7h03m

18h15m

18h50m

19h15m

6h27m

0.06

2018-12-10

6h28m

7h04m

18h15m

18h50m

20h09m

6h28m

0.12

2018-12-11

6h29m

7h04m

18h15m

18h50m

21h06m

6h29m

0.19

2018-12-12

6h30m

7h05m

18h15m

18h51m

22h05m

6h30m

0.27

2018-12-13

6h30m

7h06m

18h15m

18h51m

23h05m

6h30m

0.36

2018-12-14

6h31m

7h07m

18h16m

18h51m

-

6h31m

0.45

2018-12-15

6h32m

7h07m

18h16m

18h51m

0h06m

6h32m

0.55

2018-12-16

6h32m

7h08m

18h16m

18h52m

1h07m

6h32m

0.65

2018-12-17

6h33m

7h09m

18h16m

18h52m

2h11m

6h33m

0.75

2018-12-18

6h30m

7h05m

18h13m

18h48m

3h16m

6h30m

0.84

2018-12-19

6h30m

7h06m

18h13m

18h49m

4h24m

6h30m

0.91

2018-12-20

6h31m

7h06m

18h14m

18h49m

5h34m

6h31m

0.97

2018-12-21

6h31m

7h07m

18h14m

18h50m

-

-

0.97

2018-12-22

6h32m

7h07m

18h15m

18h50m

-

-

1.00

2018-12-23

6h32m

7h08m

18h15m

18h51m

-

-

1.00

2018-12-24

6h33m

7h08m

18h16m

18h51m

18h51m

19h35m

0.97

2018-12-25

6h33m

7h09m

18h16m

18h52m

18h52m

20h49m

0.91

2018-12-26

6h34m

7h09m

18h17m

18h53m

18h53m

22h05m

0.82

2018-12-27

6h34m

7h09m

18h18m

18h53m

18h53m

23h19m

0.72

2018-12-28

6h34m

7h10m

18h18m

18h54m

18h54m

-

0.61

2018-12-29

6h34m

7h10m

18h19m

18h55m

18h55m

0h30m

0.49

2018-12-30

6h35m

7h10m

18h20m

18h55m

18h55m

1h40m

0.38

2018-12-31

6h35m

7h10m

18h21m

18h56m

18h56m

2h48m

0.28



The above times calculated by the calendar function of Cartes du Ciel (Sky Charts)

Monthly Evening Star Chart for Observers in the Southern Hemisphere

The chart contains the entire dome of the sky as seen from around 26 degrees south latitude at 2 hours after sunset on the 15th of the month.

Planet positions are also plotted for the 15th of the month. The moon is not shown. The Magellanic Clouds, which are satellite galaxies of the Milky Way. The Large Magellanic Cloud is located in the constellation Dorado (Dor) the Flying Fish. The Small Magellanic Cloud is located in the constellation of Tucana (Tuc) the Toucan.


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Questions or comments, send an email to: bob@bjmoler.org

Updated 12/01/18