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So take a look for Mercury about 30 minutes before sunrise during the last week of the month. Mercury moves from the constellation of Scorpius into Libra shining at magnitude 0.2 on the 30th. A quick tutorial on magnitude. The magnitude scale is an inverse logarithmic scale, meaning as the magnitudes increase in number, the apparent brightness of an object decreases by a factor of about 2.5. The dimmest object that the human eye can see is about 6th magnitude, and that's under optimum dark sky conditions. A 5th magnitude object is 2.5 times brighter than a 6th magnitude object, while a magnitude 7 object is 2.5 times dimmer. any magnitude greater than six, you will definitely need binoculars or a telescope to spot. However, looking at any of these planets or even the stars that you can see with the naked eye, definitely point a telescope or binoculars up into that part of... Continuing on, Venus. Venus is rising about 5.45 a.m. this week and look for Venus to the east about an hour or so before sunrise. From a constellation of Virgo into Libra shining at magnitude minus 3.9 on the first. Uh, Mars. Mars is setting about 5.25pm this week, so Mars is going to be very, very low to the west. Look for Mars in about 30 minutes. The sun sets very, very low. We'll be lost in the evening twilight glow. fires first from the constellation of Libra at the Alpha Yoko, shining at magnitude 1.5.