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07/01/2014 – Ephemeris – July 2014 Preview

July 1, 2014 Comments off

Ephemeris for Tuesday, July 1st.  Today the Sun will be up for 15 hours and 30 minutes, setting at 9:31.   The Moon, half way from new to first quarter, will set at 11:42 this evening.  Tomorrow the sun will rise at 6:01.

Lets preview July’s skies. The sun, having reached its northern solstice, is beginning to slide southward again, at first imperceptibly, then with greater speed.  The daylight hours will decrease from 15 hours and 30 minutes today to 14 hours 41 minutes at month’s end.  The daylight hours will be slightly shorter south of Interlochen, and slightly longer to the north.  The altitude of the sun at local noon, when the sun is due south will decrease from 68 degrees today to 63 degrees at month’s end.  The sun will be a degree lower in the Straits area.  Despite the warmth, the earth will reach its greatest distance from the sun on Thursday the 3rd.  The planets visible this month in the evening are Mars and Saturn.

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

Addendum

July 2014 Star Chart

July star chart for 11 p.m. on July 15, 2014. Created by my LookingUp program.

Astronomical twilight ends at 11:58 p.m. on July 1st, decreasing to 11:13 on the 31st.

Add a half hour to 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 pointers from the Big Dipper are:

  • Pointer stars at the front of the bowl of the Big Dipper point to Polaris the North Star.
  • The leaky bowl drips on the back of Leo the lion.
  • The arc of the dipper’s handle points to Arcturus.
  • The straighten the ark to a spike to point to Spica.
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