Home > Constellations, Ephemeris Program, stars > 04/06/2015 – Ephemeris – Arcturus the 4th brightest star

04/06/2015 – Ephemeris – Arcturus the 4th brightest star

April 6, 2015

Ephemeris for Monday, April 6th.  The Sun will rise at 7:14.  It’ll be up for 13 hours and 1 minute, setting at 8:16.   The Moon, 2 days past full, will rise at 10:37 this evening.

One of the stars that stays up most of the year, except late autumn and most of winter is Arcturus.  Now in the evening Arcturus is low in the east.  It’s a bright star, officially the 4th brightest star in the night sky, and the 4th brightest star-like object in our night sky after Venus, Jupiter, and Sirius.  Arcturus can be found by following the arc of the handle of the Big Dipper to it.  Remember, follow the arc to Arcturus.  Arcturus belongs to the kite shaped constellation of Boötes, which we’ll visit in greater detail when it’s higher in the sky.  Arcturus is an interesting star.  It’s 37 light years away, and moving quite rapidly at 75 miles per second (122km/s), mostly across the sky.  Some astronomers think that it

Arcturus finder chart

Arcturus off the handle of the Big Dipper at 9:30 p.m. April 6, 2015. Created using Stellarium.

may be part of a captured dwarf galaxy.

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

Addendum

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