Moon Conjunction with Uranus

   Saturday evening March 9th the thin 3-day old waxing crescent Moon will be about 6-7o from the outer planet Uranus. Both will be above the western horizon at sunset local time, setting about 2 hours after the Sun sets.
   Is it possible to see Uranus? Currently the apparent magnitude of Uranus is within the range that is visible to the unaided eye in very dark skies, or at least with binoculars. However even at a thin crescent shape the nearby Moon may brighten the sky too much to allow for seeing Uranus. There is a noticeable difference in the apparent brightness of the crescent Moon and Uranus. The Moon has a -10.0 apparent magnitude compared to Uranus with a 5.87 apparent magnitude.
   Despite the moonlight Uranus is visible as a faint star through binoculars at its current apparent magnitude and using the Moon as a guide it may be possible to spot Uranus. You may just have to wait until the Moon rises well after sunset leaving the sky relatively darker.

   
   
   

Click here to go to the Qué tal in the Current Skies web site for monthly observing information, or here to return to bobs-spaces.


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