Thursday, June 28, 2012

Venus and Jupiter: altitude/azimuth comparisons

Event Date: July 5th
Time: 5:30 AM/11:51 AM


Brief

   Let's stick with Jupiter and Venus for one more day.  We will continue with what I talked about yesterday with same azimuths.  Whereas yesterday I showed the alt/az grid, today I will show the celestial grid to show the different declinations of Venus, Jupiter and the Pleiades.  Venus and Jupiter have moved slightly east from where they were yesterday, and also slightly further separated from yesterday; that separation rate will grow during upcoming weeks, as Venus starts to pick up speed in pro-grade motion.  For today, as the time above shows, I display the planets and Pleiades higher.  Eventually in the sky after Sunrise, Venus and Jupiter are no where close to the same azimuth in comparison to the showing of yesterday.  However, as I show them in image two during the daylight hours, they eventually reach the same altitude.
   Image one shows them during civil twilight, while image two shows them during daylight.  With a telescope or even binoculars, both are findable in the daytime if you known exactly where to look on a very clear day. 








Detailed


Notice also in image one, that Aldebaran and Venus are once again close together.  During the end of its retrograde, Venus pulled away from the star after passing it.  Now, with the "curve" that we see Venus make since those last days and past stationary, the two will have a closer encounter as Venus passes it in pro-grade.
   For image two, the planets are shown high in the sky.  Although neither is as high as a summer solstice Sun, Jupiter is almost as high as the Sun, currently being just past the June solstice.  Venus is losing ecliptic latitude quickly and declination while separating more from the Sun.  It is not quite as high as Jupiter, yet still appears about the same at transit later in the day.

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