Ephemeris Star Charts – August 2019

Contents:

Monthly Star Chart s for Northern Michigan (about 45° North)
Twilight ranges for the Grand Traverse Area
Monthly star chart for the Southern Hemisphere

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.

August Evening Star Chart

Date	Grand Traverse region, Michigan - Eastern Time
1st.	11:00 p.m. EDT
8th.	10:30 p.m. EDT
15th.	10:00 p.m. EDT
22nd.	9:30 p.m. EDT
29th.	9:00 p.m. EDT

August Morning Star Chart

For early birds I’m including a morning star chart too, which shows the stars we’ll see in the evening 4 months from now.

Date	Grand Traverse region, Michigan - Eastern Time
1st.	5:00 a.m. EST
8th.	4:30 a.m. EST
15th.	4:00 a.m. EDT
22nd.	3:30 a.m. EDT
29th.	3:00 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.

The arrow from the pointer stars of the Big Dipper to Polaris the North Star, near the north celestial pole.
A leaky dipper drips on Leo
Follow the arc of the handle of the Big Dipper to Arcturus.
Follow the spike to Spica.
The Summer Triangle is in red.
PerR is the Perseid meteor shower radiant on the peak night of the morning of August 13^th.

Twilight, Astronomical and Nautical

			EDT
Traverse City	Morning twilight		Evening twilight		Dark night		Moon
Date	Astro.	Nautical	Nautical	Astro.	Start	End	Illum.
2019-08-01	4h30m	5h18m	22h27m	23h16m	23h16m	4h30m	0.01
2019-08-02	4h31m	5h20m	22h26m	23h14m	23h14m	4h31m	0.04
2019-08-03	4h33m	5h21m	22h24m	23h12m	23h12m	4h33m	0.11
2019-08-04	4h35m	5h23m	22h22m	23h10m	23h33m	4h35m	0.2
2019-08-05	4h37m	5h24m	22h21m	23h07m	-	4h37m	0.3
2019-08-06	4h39m	5h26m	22h19m	23h05m	0h01m	4h39m	0.42
2019-08-07	4h41m	5h27m	22h17m	23h03m	0h30m	4h41m	0.53
2019-08-08	4h43m	5h29m	22h15m	23h01m	1h00m	4h43m	0.64
2019-08-09	4h45m	5h30m	22h14m	22h59m	1h33m	4h45m	0.74
2019-08-10	4h47m	5h32m	22h12m	22h57m	2h11m	4h47m	0.83
2019-08-11	4h49m	5h33m	22h10m	22h54m	2h54m	4h49m	0.9
2019-08-12	4h51m	5h35m	22h08m	22h52m	3h44m	4h51m	0.9
2019-08-13	4h52m	5h36m	22h06m	22h50m	4h38m	4h52m	0.95
2019-08-14	4h54m	5h38m	22h04m	22h48m	-	-	0.98
2019-08-15	4h56m	5h39m	22h03m	22h46m	-	-	1
2019-08-16	4h58m	5h41m	22h01m	22h43m	-	-	0.99
2019-08-17	5h00m	5h42m	21h59m	22h41m	-	-	0.97
2019-08-18	5h01m	5h43m	21h57m	22h39m	-	-	0.93
2019-08-19	5h03m	5h45m	21h55m	22h37m	22h37m	22h53m	0.87
2019-08-20	5h05m	5h46m	21h53m	22h34m	22h34m	23h16m	0.8
2019-08-21	5h07m	5h48m	21h51m	22h32m	22h32m	23h41m	0.72
2019-08-22	5h08m	5h49m	21h49m	22h30m	22h30m	-	0.62
2019-08-23	5h10m	5h51m	21h47m	22h28m	22h28m	0h10m	0.52
2019-08-24	5h12m	5h52m	21h45m	22h25m	22h25m	0h43m	0.41
2019-08-25	5h14m	5h54m	21h43m	22h23m	22h23m	1h23m	0.3
2019-08-26	5h15m	5h55m	21h41m	22h21m	22h21m	2h13m	0.2
2019-08-27	5h17m	5h56m	21h39m	22h19m	22h19m	3h13m	0.11
2019-08-28	5h19m	5h58m	21h37m	22h16m	22h16m	4h23m	0.05
2019-08-29	5h20m	5h59m	21h35m	22h14m	22h14m	5h20m	0.01
2019-08-30	5h22m	6h01m	21h33m	22h12m	22h12m	5h22m	0
2019-08-31	5h24m	6h02m	21h31m	22h10m	22h10m	5h24m	0.03

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 08/01/19