Archive for August 23, 2019

08/23/2019 – Ephemeris – Two small constellations around the Summer Triangle

August 23, 2019 Comments off

Ephemeris for Friday, August 23rd. Today the Sun will be up for 13 hours and 41 minutes, setting at 8:35, and it will rise tomorrow at 6:55. The Moon, at last quarter today, will rise at 12:43 tomorrow morning.

Located below the eastern edge of the Summer Triangle of three of the brightest stars in the sky, which is overhead in our sky at 10 p.m., is the tiny constellation of Delphinus the dolphin. Delphinus’ 6 stars in a small parallelogram with a tail, really does look like a dolphin leaping out of the water. The parallelogram itself has the name Job’s Coffin. The origin of this asterism or informal constellation is unknown. Of the dolphin itself: the ancient Greeks appreciated this aquatic mammal as we do, and told stories of dolphins rescuing shipwrecked sailors. There’s another tiny constellation to the right of Delphinus, Sagitta the arrow a small thin group of 5 stars, which represents Cupid’s dart. Above-right of Sagitta binoculars will find a little star group called the Coat hanger.

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


Delphinus and Sagitta finder animation

Delphinus and Sagitta finder animation. Created using Stellarium and GIMP.

Closeup of Sagitta and the binocular asterism the Coathanger. Created using Stellarium.