August Moon at Ascending Node – and Oh Yeah, A Total Solar Eclipse!

   Monday August 21st the new 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 August 21st the new Moon will be crossing the plane of the ecliptic at 10:34 UT (5:34 am CDT) within the constellation Leo the Lion. 8 hours later, at 18:30 UT (1:30 pm CDT), the Moon will reach new phase. This close timing between the new Moon phase and a node crossing means only one thing – eclipse!!

   My eclipse viewing area will be at an Elementary School in the North Kansas City School District. From that location totality will be approximately 80 seconds. This short video showing totality for 80 seconds, was clipped and edited from a video shot during the November 2012 total solar eclipse viewed from Australia.

   Read a bit more about this eclipse from a previous post.

      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.

Mars, Phone Home!

mars-solar-conjunction-above   Thursday July 27th the planet Mars will be at solar conjunction, on the opposite side of the Sun from the Earth. Mars will reappear on the west side of the Sun as a morning planet next month and gradually will become more visible in the morning skies.
    So while Mars is out of sight for observers it is also out of ‘radio sight’ for all of the spacecraft at Mars – either on the surface or in orbit. Between July 22nd to August 1st mission controllers will stop sending messages to the spacecraft at Mars, however the orbiters will continue their science observations and collecting data. The rovers on Mars on the other hand will not rove until after the radio silence period, but will still be able to carry on with some investigations.

   Click here to read more about how NASA prepares for the radio silence.

   
   
   
   

   
   
   

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.

June Moon at Ascending Node

   Thursday June 27th the waxing crescent 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 June 27th the 4-day old waxing crescent Moon will be with the constellation Leo the Lion, and the Moon will be located less than 1o from the heart of the Lion, the star Regulus. This should make for a great view with binoculars or through the eyepiece of a telescope.
   Just above the western horizon, possibly lost in the Sun’s glare, are two more planets – Mars and Mercury about 1o apart.

   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.

Solar Eclipse of August 21


   I too have written some information about the solar eclipse, aka “The Great American Eclipse”, of August 21st. It is my attempt to compare two different views of the eclipse. One will be from within the path of totality where I will be, and the other in my hometown of Lee’s Summit Missouri just south of the path of totality by a few miles. As a result residents in Lee’s Summit, unless they drive north, will only see a partial eclipse with 99.986% of the Sun covered.
   So without further ado click here to go to Eclipsed Thoughts.

   
   
   

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.

Moon Not at Ascending Node!!

   Whoops — writing perhaps a little too early this morning I sent out a mis-dated (as in incorrect) posting about the Moon being at ascending node. It is not there today but rather on the 31st. I’ll re-post in a couple of days.
   However the sky graphic is correct so if it is clear this evening go outside and enjoy the view. Use binoculars and you could see the open star cluster, M-35, a few degrees to the right from 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.

Mars – Saturn at Heliocentric Opposition


   Monday May 1st the planets Mars and Saturn will have reached a point in their respective orbits where they are on opposite sides of the Sun and are approximately 180o apart, or at what is called heliocentric opposition. Using the system of heliocentric longitude Mars has a heliocentric longitude of 83o while Saturn has a heliocentric longitude of 263o

   Mars is visible above the western horizon at around sunset local time near the two open star clusters of Taurus the Bull – the Pleiades and the Hyades. On the other side of the sky, over the eastern horizon is Saturn, rising around midnight local time.

   
   
   

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.

April Moon at Perigee

   The Moon reaches perigee, (minimum distance from Earth), this month on Friday March 3rd. At that time the Moon will more or less be at a distance of 28.17 Earth diameters (359,327 km or 223,275 miles) from the Earth.

   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*

   On the day of the perigee Moon the 1.5-day young thin waxing crescent Moon is above the western horizon at sunset local time and is near Dwarf Planet Ceres and the Pleiades open star cluster.

   *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.