Whoops! Lunar Eclipse Post-Not Proofread!

   One of my drawbacks to writing too early in the morning and clicking on publish was just e-mailed out! It’s been fixed on my web site.
   My apologies for not scrolling down the entire page while proofreading and catching this.


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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Penumbral Lunar Eclipse

penumbral-eclipse-ani   At 17:45 UT (12:45 am CDT) Friday June 5th the full Moon will start passing through the Earth’s shadow setting up the condition for a lunar eclipse. Approximately 24 hours later the just past full Moon will be at its descending node, the orbital point where the Moon’s inclined orbit crosses, or intersects the Earth’s orbit.
   This penumbral lunar eclipse will not be visible from North and South America.
   Click here to go to the Hermit Eclipse web site for an interactive map showing where this eclipse will occur.

   
   
   
   

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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June Moon at Descending Node

   Saturday June 6th the 14.7-day old waning gibbous Moon crosses the plane of the ecliptic moving south. This is known as the descending node, one of two intersections the Moon’s orbital path (dark green line) has with the ecliptic.

   On the date of the descending node the waning gibbous Moon will be just getting ready to set about an hour or so before sunrise. To the east are three of the visible planets, Jupiter, Saturn, Mars. Dwarf Planet Ceres, and Neptune are also part of the line-up along the ecliptic, but both have apparent magnitudes too dim to be naked-eye visible.

   
   
   
   
   

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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Mercury at Eastern Elongation

orbital-positions    On Thursday June 4th Mercury, the innermost planet, will reach its orbital position known as greatest eastern elongation. At that moment Mercury, the Sun, and the Earth, would be arranged in something close to approximating a right angle as this graphic shows.
   From our perspective the orbits of Mercury and Venus appear to move from one side of the Sun to the other – from superior conjunction, behind the Sun, out to the left (east) from the Sun to eastern elongation, then reverse and move westward through (inferior conjunction) between the Earth and the Sun to western elongation. From there the inner planet moves eastward going behind the Sun (superior conjunction) and eventually reappearing on the eastern side of the Sun for an eastern elongation. Repeat over and over – do not stop!

   The planet Mercury is currently over the western horizon at sunset local time and will remain visible for most of the month.

   
   
   

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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June Apogee Moon

   Our Moon reaches perigee, (closest to Earth), for this orbit, on Wednesday June 3rd. At that time the Moon will be at a distance of 28.56 Earth diameters, 226,406 miles (364,366 km) from the Earth.

   On the day of the perigee Moon the 13.3-day old waxing gibbous Moon rises a couple of hours before the Sun sets placing the Moon over the southeastern horizon around mid-evening.

   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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Venus at Inferior Conjunction – 2020

   Wednesday June 3rd the inner planet Venus reaches its orbital position known as inferior conjunction.
   This is one of four points along an inner planet orbit. At inferior conjunction Venus is between the Earth and the Sun – sort of like our new Moon phase – but not necessarily directly in line. If that were so, inferior conjunction at the same time as Venus in direct line with the Earth and Sun (a node crossing at inferior conjunction) it would be a somewhat rare transit of the Sun by Venus. These happen as a pair of transits about one time each century with the last pair of Venus transits in June 2004 and June 2012. Here are some pictures of the June 2012 Venus Transit. Here is a link to the Vimeo web site to watch a video of the 2012 Venus Transit.
   By the way the next pair of Venus Transits are December 2117, and December 2125.


    At this inferior conjunction Venus is 0.19o north of the ecliptic.

   
   
   
   

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 the 10.5-day old waxing gibbous Moon will be about 5-6o from the blue-white star Spica in the constellation Virgo the Harvest Maiden. Both will fit within the field of view of binoculars.


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.


Also Follow me and other great resources at Feedspot.