Moon Slips Past the Scorpion

   Over the next two evenings, Saturday August 18th, and Sunday the 19th, the waning gibbous Moon will pass within about 8-10o from the reddish star Antares, the ‘heart’ of Scorpius the Scorpion.
   Joining the Moon and Jupiter are the planets Venus, Saturn, Mars, and Dwarf Planet Ceres.

   
   
   

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Venus at Eastern Elongation

inner-planets-positions   Thursday August 16th Venus reaches the point in its orbit called greatest eastern elongation. As this graphic shows an inner planet, Venus or Mercury, is more or less at a right angle (90o) from the Sun and Earth at eastern elongation. From the surface of the Earth, your backyard, for example, Venus is to the left, or eastern side of the Sun and is setting after the Sun.

   At eastern elongation the angle between Venus and the Sun is at its greatest, which for this elongation Venus will be 45.9o from the Sun. In terms of viewing Venus, this is as about as late as Venus will set, about 4 hours after sunset local time, meaning for some Venus may set close to midnight local time. This animated graphic shows Venus at sunset, then with Venus’s orbit shown, and then with the horizon removed to see where the Sun is relative to Venus.

venus at eastern elongation   From eastern elongation forward Venus will be moving westward toward the Sun, and each day setting closer and closer to the time of sunset. By October Venus will have orbited to inferior conjunction – between the Earth and the Sun. During this part of the inner planet orbit, from eastern elongation to inferior conjunction, the distance from Earth decreases and the apparent size of Venus increases. Venus also goes through phase changes much like our Moon, and so from eastern elongation to inferior conjunction Venus wanes from a small appearing gibbous phase to an increasingly thinner crescent phase.
   
   
   
   

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 in Conjunction with Jupiter

   Over the next two evenings, Thursday August 16th, the waxing crescent Moon, and Friday the 17th, the first quarter Moon will pass within about 7-8o from the outer planet Jupiter. Jupiter with a -2.0 apparent magnitude, is about 0.5o from the 2.7 apparent magnitude star Zubenelgenubi in Libra the Scales.

   Joining the Moon and Jupiter are the planets Venus, Saturn, Mars, and Dwarf Planet Ceres.

   
   
   

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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Waxing Crescent Moon Near Spica

   Wednesday evening August 15th the 4.5-day old waxing crescent Moon will be about 7o from the blue-white star Spica in Virgo the Harvest Maiden.
   In addition to the Moon are five planets spread out from west to east – Dwarf Planet Ceres, and the planets Venus, Jupiter, Saturn, and Mars.

   
   
   

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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Let the Moon Lead the Way


   Over the next 10 days, from August 13th to the 23rd, the Moon will move eastward, as it always does, following the ecliptic and interacting with planets and stars near the ecliptic.
   
   
   
               click on any graphic below to view each of the graphics full sized.

   
   
   

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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Waxing Crescent Moon Near Venus

   Monday evening August 13th the thin 2.5-day young waxing crescent Moon will be about 10o from the inner planet Venus, and about 8o from the Dwarf Planet Ceres. However at 8th magnitude Ceres will be not be naked-eye visible, but Venus at a -4.6 apparent magnitude will be hard to miss!
   And spread out from west to east are the planets Jupiter, Saturn, and Mars.

   
   
   

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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Sun Enters Leo

10aug-view_from-earth
   Friday August 10th the Sun in its apparent eastward motion along the ecliptic, moves out of the constellation Cancer the Crab and into the constellation of Leo the Lion. This is the true or actual position of the Sun as opposed to the pseudoscience of astrology which usually has the astrological Sun one constellation ahead or east from the Astronomical Sun’s position.

   Read a little more about how astrology has the Sun incorrectly placed in a previous blog, and in another blog discussing the effects of precession.
   
   
   

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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