#### Topic: Earth orbit - round or elliptic?

I know that plane, I not about it want to ask. There are comets to elliptic orbits and when they come nearer to the sun, at them a tail. If there is something elliptic then round does not happen. It is necessary to estimate only, how much it more or less elliptic. If the orbit of the Earth drawn out it turns out that is seasons when arrives more or less energies from the sun. But it not summer and winter because time and winter are defined by an inclination of an axis of a planet to a plane of rotation round the sun, instead of in distance to the sun on an orbit (so to us speak popular tests of intelligence in mass-media). The axis is inclined all time equally (feeblly precesses), the turn lasts within a year, therefore winter/summer happen once a year. And in a case with an ellipse could be and other variants (for example two times a year?) I doubt that this ellipse has the sun (center of masses of solar system) precisely in the middle, instead of in any special point of type of focus of an ellipse. If the sun not in the middle, means and for the account of an oblongness of an ellipse winter/summer too will be one  year. Here it is possible to estimate only that has a greater influence - an oblongness of an ellipse or an inclination of an earth axis. The question - for what day of year is necessary the maximum removal of the earth from the sun - for December, 21st (day of a winter solstice) or not? Or day of a winter solstice is connected to an axis inclination, and the greatest removal is any other day of year? What? https://ru.wikipedia.org/wiki/%D0%9E%D1 … 0%BB%D0%B8 if to judge on this picture in southern hemisphere there should be more bad climate. In Russia when winter - the earth close to the sun, and at them - on the contrary. UPD: whether there Can be these three lines from a picture three elephants at unsharp (for example machine or from unknown language) transfer? Or that were vectors of three-dimensional base? Why at all it New Year is celebrated on 1st of January, instead of by 3rd?