March Moon at Perigee

   Our Moon reaches perigee, (closest distance to Earth), for this orbit, on Tuesday March 19th. At that time the Moon will be at a distance of 28.17 Earth diameters (223,309 miles – 359,381 km) from the Earth.

   The 13-day old nearly full, waxing gibbous, Moon rises shortly after sunset local time is visible all night. Over the southwestern horizon, as the Moon is rising,is the planet Mars which sets around midnight.

   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)

   Read this very informative article about the Earth-Moon system and their orbital motions, written by Joe Hanson. “Do We Orbit the Moon?”

   
   
   

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 – Regulus Conjunction

   Monday evening March 18th the 12-day old waxing gibbous Moon will be about 1o from the star Regulus, the ‘heart’ of Leo the Lion. Both will very easily 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.


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March Moon at Ascending Node

   Saturday March 16th the 10-day old waxing gibbous Moon will be crossing the plane of the ecliptic moving north relative to the ecliptic. This is known as the ascending node, one of two intersections the Moon’s orbital path has with the ecliptic. The ecliptic is actually the Earth’s orbit and the Moon’s orbit is inclined about 6o from the ecliptic. So there are two node intersections, the ascending and descending nodes.

   On the day of the node crossing the 10-day old waxing gibbous Moon rises during the mid-afternoon and sets about 2 hours before sunrise on Sunday.

   Does our Moon actually go around the Earth as many graphics show? 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)

Read this very informative article about the Earth-Moon system and their orbital motions, written by Joe Hanson. “Do We Orbit the Moon?”

   
   
   

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.

February Moon At Ascending Node

   Sunday February 17th the 13-day old waxing gibbous Moon will be crossing the plane of the ecliptic moving north relative to the ecliptic. This is known as the ascending node, one of two intersections the Moon’s orbital path has with the ecliptic. The ecliptic is actually the Earth’s orbit and the Moon’s orbit is inclined about 6o from the ecliptic. So there are two node intersections, the ascending and descending nodes.

   On the day of the node crossing the 13-day old waxing gibbous Moon rises about an hour after sunset local time.

   Does our Moon actually go around the Earth as many graphics show? 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)

Read this very informative article about the Earth-Moon system and their orbital motions, written by Joe Hanson. “Do We Orbit the Moon?”

   
   
   

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 Gets ‘Moon Eye’

   Wednesday evening, February 13th the 9-day old waxing gibbous Moon will be within about 1o from the reddish star Aldebaran in the open star cluster the Pleiades. The v-shaped Pleiades make up the face of Taurus the Bull and the star is often referred to as the angry eye of the bull due to the star’s reddish color. The entire star cluster and the Moon all fit well within the field of view of binoculars.

    Further west is a planetary conjunction between Mars and Uranus. Both will fit well 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.


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Moon – Aldebaran Conjunction

   Thursday evening December 20the the nearly full 13.5-day waxing gibbous Moon will be within 3o from the reddish star Aldebaran in the constellation Taurus the Bull. Aldebaran is part of the open star cluster the Hyades, a v-shaped asterism making up the face of Taurus.

   
   
   

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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Comet Wirtanen (46P)

   Comet Wirtanen (69P) has brightened enough to be seen with binoculars and easily captured with a camera. This picture was taken around 6:30 pm CST on December 15th while the skies were hazy with high cirrus clouds and a first quarter Moon over the southern horizon. That combined with light polluted skies of the Kansas City metropolitan area brightened the skies and made the comet not visible with the naked eye but easy to find as it was near the Pleiades open star cluster.
   The picture was taken with a Canon Rebel EOS T7i camera with the following settings: 135 mm lens; 13 second exposure time; aperture 5.6; and ISO 32000. The 13 second exposure time was long enough to show short length star trails as the Earth rotated.
   This evening, December 16th Comet Wirtanen will still be within a few degrees from the Pleiades again making it fairly easy to locate.

   With the Moon waxing from first quarter through full Moon phase and moving past the comet over the next few days means that the comet will not be too visible until the Moon passes by and rises after the comet does. The animated graphic, below, shows the motion of the Moon and the comet between December 15th through December 24th. By the 23rd the comet will be within a few degrees from the bright star Capella in Auriga the Charioteer.

   
   
   

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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