Earth's Closest Approach to the Sun: Does the Date Change?

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Discussion Overview

The discussion centers on the timing of Earth's closest approach to the Sun, known as perihelion, and whether this date changes over time. It includes references to astronomical data and the effects of leap years on the calendar.

Discussion Character

  • Exploratory, Technical explanation, Conceptual clarification

Main Points Raised

  • One participant inquires about the specific time of year when Earth is closest to the Sun and whether this timing varies.
  • Another participant cites a source indicating that Earth is closest to the Sun on January 3rd and notes that this timing changes very slowly over a period of about 27,000 years.
  • A participant shares a link to a resource that details how the dates of perihelion, aphelion, equinoxes, and solstices vary over the years.
  • Another participant acknowledges the information provided.
  • A repeated link is shared, emphasizing that the most significant changes in the dates are attributed to leap years.

Areas of Agreement / Disagreement

Participants appear to agree on the fact that the date of perihelion varies, but the specifics of how this variation occurs and its implications are not fully resolved. Multiple viewpoints regarding the timing and factors influencing it are present.

Contextual Notes

The discussion does not clarify the underlying mechanisms behind the long-term variation in perihelion timing or the specific impact of leap years on the calendar dates.

Ulysees
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What time of the year is the Earth closest to the sun?

Does this time vary?
 
Astronomy news on Phys.org
According to wiki, the Earth is closest to the Sun on Jan 3rd. And this time will vary but very slowly (period of about 27000years)
 
Thanks for the info.
 

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