Mercury at Eastern Elongation

orbital-positions    On Tuesday November 6th 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!

   Currently Mercury is visible over the western horizon at sunset local time. Joining Mercury to the right (west) is the planet Jupiter, and further east the planet Saturn, and not shown in this graphic but is there over the southeastern horizon the planet Mars. A few degrees to the left (east) from Mercury is the reddish star Antares in Scorpius the Scorpion.
   
   
   

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.

Moon in Conjunction with Venus, Spica, and Dwarf Planet Ceres

   Tuesday November 6th the 28-day old very thin waning crescent Moon will be near the inner planet Venus, the star Spica in Virgo the Harvest Maiden, and Dwarf Planet Ceres as they all rise an hour or so before sunrise. The waning crescent Moon has an apparent magnitude of -8.55 compared with Venus apparent magnitude of -4.32, Spica with an apparent magnitude of 0.96, and Dwarf Planet Ceres with an apparent magnitude of 8.18.

   
   
   

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.

Moon Conjunction with Regulus

   Tuesday November 2nd in the early hours before the Sun rises the 24-day old waning crescent Moon will be 2-3o from Regulus, the ‘heart’ of Leo the Lion.

   
   
   

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.

October Moon at Ascending Node, and at Perigee

   Wednesday October 31st the 22-day old last quarter Moon will be crossing the ecliptic moving north. This is known as the ascending node, one of two intersections the Moon’s orbital path has with the ecliptic. (see animated graphic below)
   Also on that same day, Wednesday October 31st, the last quarter Moon reaches perigee, (closest distance from Earth). At that time the Moon will more or less be at a distance of 29.025 Earth diameters, (230,032 miles 370,201 km), from the Earth.


On the day of perigee and ascending node the first quarter Moon rises at around midnight and is only a few degrees away from the open star cluster M-44, the Beehive Cluster.

   
   
   

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.

Moon-Jupiter Conjunction

   Monday, October 29th during the early evening shortly after sunset local time the innermost planet Mercury will be about 3-4o from the outer planet Jupiter. BOth will be low over the western horizon bu should make for an interesting view with 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.

Taurus Takes it on the Nose!

    Friday evening October 26th the 18-day old waning gibbous Moon will be 5-6o from the reddish star Aldebaran. This star, at the point of the v-shaped open star cluster the Hyades, represents an angry eye of Taurus the Bull.

   
   
   

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.

Venus at Inferior Conjunction

   Friday October 26th 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 6.36o south 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.


Also Follow me and other great resources at Feedspot.