Perihelion 2025

[richardmurray]

Happy Perihelion , happy new year During the perihelion the earth is closest to the sun and the sun actually appears smaller and smaller in the sky till the midyear, the aphelion in which the sun then gets bigger and bigger in the sky

photo citation https://www.flickr.com/photos/benheine/31614749540/

 

 

2024 work list

literal list

https://rmnewsletter.substack.com/p/2024-art-list-rmnewsletter

list with image previews- scroll under the Cento

https://rmnewsletter.over-blog.com/2024/11/12/01/2024-rmnewsletter.html

 

[Pioneer1]

Is this the same as the Winter Solstice?

[richardmurray]

@Pioneer1

No, all solstice's occur when the path of the sun is highest or lowest from the equator. The fist graphic, gives an idea [don't pay mind to the day, they don't occur on the same day every year, the date of each has to be calculated. But, the general idea is there. the earth has an elliptical orbit which means it is like a line around an egg, it is bigger on one side. the perihelion [ periapsis in the image] is when the earth is closest. the aphelion [ apoapsis in the image] is when the earth is farthest from the sun. these two events some folk [me and others] consider the beginning of a year and the true midyear, respectively. 

The second image shows

top left march equinox

top right june solstice

bottom left september equinox

bottom right december solstice

 

the third image is the side view approximation of the june solstice. Notice the equator. 

 

Now the fourth image is the side view approximation of the december solstice, notice the equator. Do you see the difference?

 

The solstices or the equinoxes are based on the tilt of the earth's axis.  During the equinoxes the equator of the earth and the middle sun ray in the graphic are in line. I better way to explain it during the equinoxes, the northern and southern hemisphere face the sun equally. This is why it is an equal night. the day and night are equal length. 

 

During the december solstice the southern hemisphere faces the sun more, this is why the december solstice has the longest day in the southern hemisphere while the longest night in the northern hemisphere. 

In parallel, the june solstice is when the northern hemisphere faces the sun the most. that is why the june solstice has the longest day in the northern hemisphere while the longest night in the southern. 

 

And the earth changes cyclically so 

THE TOP

Southern hemisphere faces the sun the most , december solstice, longest day in the southern hemisphere, longest night in the northern hemisphere

earth axis tilts every day less and less of the southern hemispsere faces the sun

Both hemisphere faces the sun qually, march equinox, day and night the same length in both hemispheres

earth axis tilts every day less and less of the southern hemisphere faces the sun 

Northern hemisphere faces the sun the most, June solstice, longest day in the northern hemisphere, longest night in the southern hemisphere

earth axis tilts every day more and more of the southern hemisphere faces the sun

Both hemispheres faces he sun equally , september equinox. equal day in both hemipsheres

Earth axis tilts every day more and more of the southern hemipshere facing the sun

GO TO THE TOP

 

The perihelion or aphelion aren't about the earth's tilt  along the path around the sun. The perihelion or aphelion are about the earth's distance to the sun. 

During the perihelion the earth is closest and from the moment immediately after  the perihelion the earth is getting farther and farther away from the sun till the aphelion when the earth gets the farthest from the sun in its orbit. And immediately after the aphelion, the earth is getting closer and closer to the sun till the following, perihelion. 

 

The moon has an elliptical orbit around the earth, like the earth has around the sun. 

The moon doesn't have an equinox or solstice because it never tils its axis, one side of the moon always faces the earth

 

I hope i helped

 

 

 

[Pioneer1]

richardmurray

Ok, thanks for the clarification!

I was wondering why the date didn't line up on the day the Winter Solstice occurred.
That explains why.