Earth is closest to the Sun in January (perihelion); in July, it is farthest away (aphelion). Aphelion and perihelion dates for 2024, 2025, and other years.
The terms Aphelion and Perihelion describe the furthest and closest distance the Earth is to the Sun, respectively. The Earth is farthest from the Sun (aphelion) roughly two weeks after thesummer solstice, and closest to the Sun (perihelion) roughly 2 weeks after thewinter solstice. When Is P...
The left half was captured close to the date of the 2021 perihelion (January 2), the closest point in Earth's orbit. The right was recorded just before the aphelion in 2021. Otherwise difficult to notice, the change in the Sun's apparent diameter between perihelion and aphelion amounts to...
The main conclusions of this work are: (a) The comet shows activity at perihelion and aphelion, caused by two different active areas: Source 1, close to the south pole, active at perihelion, and Source 2, at the north pole, centered at aphelion. (b) More than 18 physical parameters ...