Moon on the Move

   Over the next several days the Moon, as it waxes toward first quarter, will be moving toward the east and as it does the Moon will pass by several of the brighter stars along the Moon’s orbital path. This will take the Moon near Pollux, one of the Gemini ‘Twins’, and then past Regulus, the ‘Heart’ of Leo the Lion. On the 27th you may be able to see the open star cluster, M-44, or also known as the Beehive Cluster.



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Thin Waxing Crescent Moon Near Venus – Mercury

   Saturday evening May 23rd look toward the western horizon for the very thin young 1.3-day old waxing crescent Moon. The Moon will be about 3-4o from the inner planet Venus and about 5-6o from the other inner planet Mercury. All three will easily fit within the field of view of binoculars and given the range of apparent magnitudes should make for a great view and even a picture.
   Apparent MagnitudesWaxing Crescent Moon: -8.42 Venus:-4.16 Mercury: -0.42
   
   
   
   
   
   

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The Inner Planets Meet

   Thursday evening May 21st, shortly after sunset, the two inner planets Mercury (apparent magnitude 0.41) and Venus (apparent magnitude -4.16) will be about 1o from each other. Both planets will fit within the 7o field of view of 7×50 binoculars as the graphics below show. Both planets are in motion along their respective orbital paths with Mercury moving toward the east while Venus is moving toward the west.


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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May Moon at Apogee

   Our Moon reaches apogee, (greatest distance from Earth), for this orbit, on Monday 18th. At that time the 26.5-day old waning crescent Moon will be at a distance of 31.88 Earth diameters 252,028 miles (405,600 km) from the Earth.

   On the day of the apogee the thin waning crescent Moon rises about 1-2 hours before sunrise local time. Looking carefully with binoculars you may be able to see nearby 4th magnitude star 20 Ceti, one of the many stars that are part of the constellation Cetus the Whale.

   

   Does our Moon actually go around the Earth as this graphic shows? From our perspective on the Earth the Moon appears to circle around the Earth. However, in reality, the Moon orbits the Sun together with the Earth*

   *Click here to read my 2006 Scope on the Sky column “The Real Shape of the Moon’s Orbit”. (PDF)

   
   
   
   
   
   
   
   
   

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


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Moon Mars Conjunction x2

   Thursday morning May 14th the last quarter Moon will be about 8-9o to the west from the ‘Red Planet’ Mars. The following morning, Friday May 15th the waning crescent Moon will be about 6-7o from Mars but this time on the east side.



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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Moon – Antares Conjunction

   Saturday morning May 9th the 16-day old waning gibbous Moon will be about 6-7o from the heart of Scorpius the Scorpion, the reddish star Antares.
   Joining the waning gibbous Moon will be the several of the visible planets arranged west to east starting with Jupiter, then Saturn, and Mars further east. The Dwarf Planet Ceres is also part of the planet spread but at 8th magnitude Ceres would require binoculars to see.

   
   
   
   

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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Moon – Spica Conjunction

   Tuesday evening May 5th the 12-day old waxing gibbous Moon will be about 7o from the blue-white star Spica in the constellation Virgo the Harvest Maiden.

   In illustrations of Virgo the star Spica represents a bundle of grasses (wheat, oats) held in her left hand.

   
   
   
   
   
   
   
   
   
   

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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