The Moon, Mars, Saturn and Spica

A nice conjunction of a crescent Moon, Mars, Saturn and the bright star Spica will grace the evening sky tonight. The quartet will be arranged in a rough square about 4° on side. The two planets and the star will all be about 1st magnitude, with the Moon showing about 25% illuminated.

Mercury at Maximum Elongation

Today Mercury reaches maximum elongation, the furthest point it will reach from the Sun in the sky and the highest it will be above the sunrise for this morning apparition. The planet is easily visible as a bright, starlike object about 15° above the rising Sun as the twilight begins. Over the next couple weeks Mercury will slide back into the sunrise, heading for superior conjunction on September 10th.

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Mars, Saturn and Spica

Mars will pass between Saturn and Spica this evening. Currently moving in retrograde, the red planet will be directly between the ringed planet and the star. All three will be close to 1st magnitude. Saturn and Spica are currently about 4.5° apart. Mars will be just under 2° from the star.

The trio will be close for a couple weeks. On the 21st a thin crescent Moon, 24% illuminated, will join to create a very nice quartet.