Parallax during the earth's orbit?

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SUMMARY

The discussion centers on whether the difference in distance between the Earth and the Sun during perihelion and aphelion constitutes a parallax effect. Participants clarify that while perihelion and aphelion represent opposite points in Earth's orbit, the variation in distance does not qualify as parallax. Parallax specifically refers to the apparent shift in position of an object due to a change in observer location, which is not applicable in this context.

PREREQUISITES
  • Understanding of celestial mechanics and orbital dynamics
  • Familiarity with the concepts of perihelion and aphelion
  • Knowledge of parallax and its definition in astronomy
  • Basic grasp of observational astronomy principles
NEXT STEPS
  • Research the definition and implications of parallax in astronomy
  • Study the Earth's orbit, focusing on perihelion and aphelion
  • Explore the effects of distance on observational measurements in astronomy
  • Learn about the methods used to measure astronomical distances
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Astronomy students, educators, and enthusiasts interested in understanding orbital mechanics and the principles of parallax in celestial observations.

AbsoluteZer0
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Hi,

Would the difference in the distance between the Earth and the sun when the Earth is in perihelion and when it is in aphelion be considered a parallax?

Thanks,
 
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AbsoluteZer0 said:
Hi,

Would the difference in the distance between the Earth and the sun when the Earth is in perihelion and when it is in aphelion be considered a parallax?

Thanks,
Well ... since perihelion and aphelion occur at opposite ends of the orbit... that would create the parallax...

So I think the answer to your question is ... er ... no.
 

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