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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March 2017 star calendar

Star calendar March 2017

1 Mar     Low in the west at dusk, magnitude -4.2 Venus is 1½ fist-widths to the thin waxing crescent moon’s lower right. Magnitude 1.3 Mars is 2 finger-widths to the right.

3 Mar     The moon is at perigee, 369,000 kilometers away.

4 Mar     Magnitude 0.85 Aldebaran is ½ finger-width to the moon’s upper left high in the south at dusk. Later this evening the moon passes within 0.2 degrees of Aldebaran.

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January 2017 star calendar

Star calendar January 2017

1 Jan     Magnitude -4.3 Venus is 2 finger-widths to the waxing crescent moon’s upper left at dusk.

2 Jan     Tonight the moon lies between magnitude -4.3 Venus, less than 4 finger-widths to the lower right, and magnitude 0.9 Mars, less than 2 finger-widths to the upper left.

3 Jan     The moon slides past Mars this evening and forms a straight line with Venus low in the southwest at dusk. Mars is 4 finger-widths to the moon’s lower right, and Venus lies 1 fist-width beyond Mars.

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