About Bob Riddle

Currently: Retired Teacher (May 2017) but not yet finished learning and teaching. Column Editor, Scope on the Skies - Science Scope Magazine; NASA/JPL Solar System Educator Program - Solar System Ambassador Program, and Solar System Ambassadors Program.

February Full Moon is this Year’s ‘Super Moon’

   The 15.0 day old full Moon reaches perigee this month on Tuesday February 19th. At that time the Moon will more or less be at a distance of 27.97 Earth diameters 356,762 km (221,682 miles) from the Earth. This is the closest that the Moon will come to the Earth during 2019. What makes this Moon perigee sort of unique is that full Moon occurs 7 hours later.
click on animated graphic to see it larger   This full Moon is the Super Moon of the Year.
   But can you tell the apparent size difference between the full Moons this year?

    Our Moon orbits around the Sun with the Earth and 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)

   Tuesday evening the full Moon rises shortly after sunset 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.


Also Follow me and other great resources at Feedspot.

Twin Conjunctions

click on graphic to see it larger   Monday February 18th the inner planet Venus will be about 1o from the outer planet Saturn as both rise a couple of hours before the Sun rises. The two will make for an interesting view with binoculars.

   Also, on Monday February 18th the 14-day old waxing gibbous Moon will be about 7-8o to the west from the star Regulus in the constellation Leo the Lion. The following day, February 19th, the full Moon will be about the same distance from Regulus but now on the east side. Both rise in the late afternoon about 2 hours before the Sun sets.

   
   
   

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.

Sun Not In Pisces-2019


  According to the pseudoscience of astrology the Sun enters the constellation of Pisces the Fishes on Monday February 18th. In fact the actual position of the Sun is still within the boundary of the constellation of Aquarius the Water Bearer, as this graphic shows. The Sun had just entered Aquarius 2 days ago.

   Read a little more about how astrology has the Sun incorrectly placed in a previous blog, and in another blog discussing the effects of precession.

   
   
   

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.

Sun Enters Aquarius – 2019

feb-view from earth   Saturday February 16th the Sun in its apparent eastward motion along the ecliptic, moves out of the constellation Capricornus the Sea Goat and into the constellation of Aquarius the Water Bearer. This is the true or actual position of the Sun as opposed to the pseudoscience of astrology which usually has the astrological Sun one constellation ahead or east from the Astronomical Sun’s position, which will be Monday February 18th when the sun is not in Pisces according to astrology.

   
   
   

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.


Also Follow me and other great resources at Feedspot.

Moon – Mars Conjunction


   Sunday evening, February 10th, after sunset local time the 6-day old waxing crescent Moon will be 6-7o from the planet Mars. Close enough to fit within the field of view of 7×50 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.