Happy Perihelion Day!

[SDO]

Happy Perihelion! Yesterday at 0636 UTC (1:36 am ET) the Earth was as close to the Sun as it will be in 2015. This is called perihelion. The distance change is small (about 1.67% closer at perihelion and 1.67% further away at aphelion in June), but we see the Sun as a little brighter today.
Our orbit around the Sun is almost a circle right now. That means our seasons are caused by tilt of our rotation axis. But there have been times in the past when our orbit was more of an oval. It's fun to think about what that would do to our seasons and climate. The Lensman books by E. E. Doc Smith included a nemesis with a home planet that had an extremely elliptical orbit and the bizarre evolutionary adaptations that led to.

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[Nick Matkin]

A reasonable theory I saw was that when aphelion occurs during the northern hemisphere winter, this is when ice ages start. The small increase in distance from the sun reducing in the sun's heat at the Earth's surface, combined with the earth's axis tipped away from the sun, can be enough to tip into an ice age.

The drift of aphelion and perihelion through the Earth's seasons takes tens of thousands of years, and presumably the effect would be magnified when the Earth's orbit is more elliptical than now.

No doubt this is only part of the story...

Nick

[seeker/reader]

Santos Bonacci says perihelion is also when Earth is supposed to be the closest to our sister/binary star Sirius (Isis), which is the real significance of the date. In contrast, the farthest away from Sirius would be 6 months later, July 4th, which is why that date is so significant to the Illuminati (birth date of it). Bonacci says this is why so many countries have their "liberation" dates on or near the 4th of July as Isis (Sirius) is Lady Liberty and symbolizes freedom.

[Nick Matkin]

Posted by seeker/reader (here)
Santos Bonacci says perihelion is also when Earth is supposed to be the closest to our sister/binary star Sirius (Isis), which is the real significance of the date. In contrast, the farthest away from Sirius would be 6 months later, July 4th, which is why that date is so significant to the Illuminati (birth date of it). [...]

That would only work if the distances and angles between the Sun and Sirius were fixed, unchanging, which is impossible with a binary system.

Is there were any scientific evidence for Sirius and the Sun being a binary pair? Sirius is already a binary system, i.e. two stars, in this case separated by between 8 and 31 astronomical units.

If the Sun and Sirius are a binary pair, then the angles and distance between Sirius and the Earth and it would be constantly changing and not repeating every 12 months. There would be times when the distances between Earth and Sirius were closest, but with a star 8.6 light years away, it would take much longer to repeat than 12 months.

This really needs some moving graphics to illustrate the point which I'll add if I find any. Any astronomers out there care to help?

Nick

[seeker/reader]

Santos depicted the relationship by drawing two ellipses that intersect, one for Sun and one for Sirius, then he drew an elliptical orbit of the Earth around the Sun. At perihelion the Earth is closest to the sun and at the same time closest to Sirius, which places the Earth between the Sun and Sirius. Six months later the Earth is at aphelion, which puts it on the opposite side of the Sun, putting the Sun between Earth and Sirius, putting the Earth at its furthest point in relation to Sirius during its 12 month orbit of the Sun. As the Sun gets closer to Sirius, it takes the Earth with her so during the next aphelion and perihelion it will decrease their distances however during the Earth's 12 month orbit the aphelion and perihelion will still mark the maximum and minimum distances in relation to Sirius during that cycle/orbit.

This is the model that he put forth. I do not know if it is astronomically correct. He also mentioned that Sirius B is also in a tight orbit of Sirius A, making it a trinary system, but he left it out of the diagram for simplicity.