Include Sun's Diameter in Star Distance Measurement?

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SUMMARY

When measuring the distance of stars using the trigonometric method, specifically with parallax and Pythagorean theory, the diameter of the Sun is not included in the baseline measurement. The baseline is determined solely by the size of the Earth's orbit, which is approximately 2 Astronomical Units (AU). The Sun's position is considered as a reference point, but its diameter does not factor into the calculations.

PREREQUISITES
  • Understanding of trigonometric methods in astronomy
  • Familiarity with parallax measurement techniques
  • Knowledge of Pythagorean theorem applications
  • Basic concepts of Astronomical Units (AU)
NEXT STEPS
  • Research the principles of parallax in astronomy
  • Study the application of the Pythagorean theorem in celestial measurements
  • Learn about the significance of Astronomical Units in distance measurement
  • Explore the geometry of elliptical orbits and their impact on measurements
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Astronomy students, astrophysicists, and anyone interested in understanding stellar distance measurement techniques.

DB
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When measuring the distance of stars from the Earth using the Trigonomic method, using the parralax and Pythagorem theory, do you include the diameter of the sun with the 2 Au when measuring the baseline of the triangle?

I'm assuming yes, but not sure.

Ty
 
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DB said:
When measuring the distance of stars from the Earth using the Trigonomic method, using the parralax and Pythagorem theory, do you include the diameter of the sun with the 2 Au when measuring the baseline of the triangle?

I'm assuming yes, but not sure.

Ty
No. You're just using the size of the Earth's orbit. The Sun just happens to be (near) the center. (Ellipse, you know)
 
thnx i can see it now
 

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