Venus and Saturn

Over the coming days, Venus and Saturn will rendezvous in the dawn. Already drawing close, the pair is separated by less than 4° this morning. Close approach will be on the morning of the 26th when the separation will be only 40 arc-minutes. The two will remain close for about a week, the separation having grown to over 4° on the morning of the 30th.

This is a mismatched pair, with Venus dominating the view at a brilliant -4.0 magnitude. Saturn will be far dimmer at 0.6 magnitude.

The Moon and Mercury

There will be a very close conjunction of the Moon and Mercury this evening. A very thin moon, only 4% illuminated will pass the planet at a mere 42 arc-minutes separation. Taking into account the 30 arc-minute diameter of the Moon will leave Mercury less than 30 arc-minutes from the limb of the Moon. Mercury will be shining brightly at -0.2 magnitude, a nice match for the very young Moon. The pair will be about 15° above the horizon at sunset, allowing an excellent view of the conjunction.

Mercury and Saturn

As Mercury rises further from the Sun each day, Saturn is currently sliding into the sunset heading for superior conjunction. The two will pass each other on October 3rd through October 6th. The pair will be closest on October 4th, at a bit over 3° separation. The 5th will see the two quite close at about 3.5° separation. There will be about a magnitude difference in brightness between the two, with Mercury at -0.27 magnitude and Saturn at 0.69 magnitude. At about 15° above the horizon at sunset this will make for a nice pairing in the dusk.

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.