Abstract A common misconception is that Earth’s seasons are caused by its varying distance from the Sun. This paper clarifies that Earth is actually closest to the Sun during the Northern Hemisphere’s winter, specifically in early January. The phenomenon, known as perihelion, occurs approximately two weeks after the December solstice. The paper explains the mechanics of Earth’s elliptical orbit, the date of perihelion, and why distance does not determine seasonal temperature.
Earth’s orbit around the Sun is not a perfect circle but an ellipse with a low eccentricity of approximately 0.0167. This means the Sun is not at the exact center; rather, it occupies one of the two foci of the ellipse. Consequently, Earth’s distance from the Sun varies by about 3.3 million kilometers (2 million miles) over a year. The point of closest approach is called perihelion , and the farthest point is aphelion . during which month is the earth closest to the sun
At perihelion, Earth is approximately 147.1 million kilometers (91.4 million miles) from the Sun, compared to about 152.1 million kilometers (94.5 million miles) at aphelion, which occurs in early July. Abstract A common misconception is that Earth’s seasons
The relationship between Earth and the Sun is often intuitively understood: when a planet is closer to its star, it should be warmer. Consequently, many people assume Earth is closest to the Sun during their local summer. However, orbital mechanics reveal a counterintuitive reality. This paper identifies the precise month when Earth reaches its minimum distance from the Sun (perihelion) and discusses the implications. The paper explains the mechanics of Earth’s elliptical
Earth reaches perihelion in early January , typically between January 2 and January 5. In recent decades, the date has varied slightly due to gravitational perturbations from Jupiter and other planets. For example, in 2024, perihelion occurred on January 3. Therefore, the month during which Earth is closest to the Sun is January .