September Moon at Ascending Node

   Monday September 23rd the 25-day old waning 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 the day of the node crossing the waning crescent Moon will be about 8-9o from Pollux, one of the two ‘Twin’ stars of Gemini.

   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.


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September Apogee Moon

   Our Moon reaches apogee, (greatest distance from Earth), for this orbit, on Friday August 13th. At that time the Moon will be at a distance of 31.85 Earth diameters 252,511 miles (406,378 km) from the Earth.

   On the day of the apogee Moon the 14-day old full Moon rises around sunset local time and is above the horizon the remainder of the night hours, setting at around sunrise the following morning.

   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.


Also Follow me and other great resources at Feedspot.

August Moon at Perigee #2

   Our Moon reaches its second perigee, (closest distance to Earth), for this orbit, on Friday August 30th. At that time the Moon will be at a distance of 28.175 Earth diameters, 221,939 miles (357,177 km) from the Earth.

   On the day of the perigee Moon the 0.5-day old very thin waxing crescent Moon will be over the western horizon setting about less than 1 hour after the Sun sets. As this graphic is showing the Moon and Sun are very close and so the Moon may not be visible.
Sunset: 7:51 pm CDT
Moonset: 8:28 pm CDT.

Just be careful if trying to see the Moon.

   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.


Also Follow me and other great resources at Feedspot.

Perseids Meteor Shower – 2019

   While August signals the end of summer vacation for students and teachers, for sky-watchers the month signals the beginning of the Perseid meteor shower. This annual event occurs when the Earth passes through the path of debris left behind by the Comet P/SwiftTuttle. The Perseids, like all meteor showers, are named for the region of the sky that the meteors seem to radiate from. The Perseids radiant is within the constellation Perseus.
   The meteor shower lasts slightly longer than a month, beginning around July 17 and ending around August 24. The best times for viewing, when the maximum number of meteors could be seen (under ideal conditions), is the peak night, on August 13th. The best time for viewing the meteors is after midnight and in the couple of hours before the Sun rises. At this time, our position on the Earth will face directly into the “cloud” of debris.
   This year the peak night is 3 days before full Moon which is good news because the waxing gibbous Moon will set at around 4-5 am local time as the area around the Pleiades and the radiant rise in the east. This leaves maybe 2 hours of viewing before the sky brightens too much.

  Where should you look to find Perseus and the meteors? For those viewing from mid-northern latitudes (40-50 degrees Perseus rises around midnight over the northeast horizon. By early morning, the Perseids radiant is very high, nearly overhead toward the northeast horizon.

One Perseid Down- Many More to Go?
Perseids: The Peak Night

Here is a wonderful short video about a falling star by Sascha Geddert.


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-Spica Conjunction

   Monday evening August 5th the 5-day old waxing crescent Moon will be within about 5-6o from the blue-white star Spica over the southwestern horizon. Both will set shortly before midnight local time.
   Spica is part of the constellation Virgo the Harvest Maiden and represents a bundle of grasses, perhaps wheat, in her left hand.

   
   
   

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.

July Moon at 2nd Ascending Node

   Tuesday July 30th the 27.5-day old thin waning 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 the day of the node crossing the very thin waning crescent Moon rises about an hour before the Sun rises and is located nearly directly west from the ‘Twin’ stars, Pollux and Castor.

   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.

Correction to Post

   Okay, I screwed up and sent out a very incorrect post a few minutes ago.
Here is a link to the corrected post.
Sun Not in Leo

Or just scroll down to the corrected post!
   
   
   

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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