August 2017

Star calendar August 2017

1 Aug    Magnitude 0.96 Antares, the heart of the Scorpion, is less than 1 fist-width below the moon low in the south at dusk. Magnitude 0.3 Saturn is 1½ fist-widths to the lower left.

2 Aug    Saturn is less than 2 finger-widths to the moon’s lower left. The moon is at apogee, 63.51 Earth-radii away.

6 Aug    Rising a half hour before sunset, the moon forms a straight line with Altair, nearly 3 fist-widths above the moon, and Vega, another 3 fist-widths beyond Altair. These stars make up two-thirds of the Summer Triangle. The last star, Deneb, is about 2 fist-widths to Altair’s lower left.

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Star calendar July 2017

Star calendar July 2017

1 Jul    Jupiter is less than 1 fist-width to the moon’s lower right at sunset. Spica is 3 finger-widths to the lower left. Arcturus is 2½ fist-widths above the moon.

3 Jul    Earth is at aphelion, 1.01668 AU from the sun.

5 Jul    At dusk, Antares is less than 1 fist-width to the moon’s lower right, and Saturn is a little more than 1 fist-width to the lower left.

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Star calendar June 2017

Star calendar June 2017

1 Jun     The first-quarter moon lies between magnitude 1.4 Regulus, 2 fist-widths to the right, and magnitude -2.2 Jupiter, 2½ fist-widths to the lower left.

2 Jun     Tonight Jupiter is 1 fist-width to the moon’s lower left.

3 Jun     The moon passes less than 1 finger-width to Jupiter’s upper left tonight. The bright star 1 fist-width to the moon’s lower left is magnitude 1.0 Spica.

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Star calendar May 2017

Star calendar May 2017

1 May     High in the west at dusk, Procyon is 1 fist-width to the waxing crescent moon’s lower left. Pollux is 1 fist-width to the upper right. Dimmer magnitude 1.93 Castor is 2 finger-widths to the right of Pollux.

3 May     Magnitude 1.4 Regulus is only 2 finger-widths to the left of the first-quarter moon at dusk.

7 May     The waxing gibbous moon is 1 finger-width to the lower left of magnitude -1.4 Jupiter. Magnitude 0.98 Spica is 4 finger-widths below the moon.

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Star Calendar April 2017

Star calendar April 2017

1 Apr     High in the west at dusk, Orion is to the lower left of the waxing crescent moon. Magnitude 0.5 Betelgeuse is 1 fist-width to the left while magnitude 0.85 Aldebaran is almost 1 fist-width to the lower right. Mercury, at its greatest elongation, 19 degrees east of the sun, sets more than 1½ hours after the sun and can be seen low in the west at evening twilight.

2 Apr     Betelgeuse is 1 fist-width below the moon at dusk.

3 Apr     High in the south at sunset, magnitude 0.46 Procyon is 1 fist-width to the first-quarter moon’s lower left. Magnitude 1.22 Pollux is the same distance to the upper left. The bright star 3½ fist-widths below the moon is magnitude -1.09 Sirius, the Dog Star.

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