Home > Term: perihelion
perihelion
The point in the Earth's orbit when it is closest to the sun (147. 5 million km). Perihelion occurs on the 3rd or 4th of January. The opposite of Aphelion.
- ส่วนหนึ่งของคำพูด: noun
- อุตสาหกรรม/ขอบเขต: Biology
- Category: Ecology
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