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Se entiende por ángulo sidéreo:Sidereal hour angle means:

Show the answer

Correct answer: a) The arc of the celestial equator from the point of Aries to a star’s hour circle.

Why it is correct

It runs from Aries to the star, so it does not depend on the observer.

Why the others are not

  • b) That is the Greenwich hour angle.
  • c) That is the local hour angle of Aries.
  • d) That is the local hour angle.

How to work it out in the exam

  1. Sidereal: from Aries.

Where this question comes from

Try it: Sight reduction

Pending instructor review. Machine translation, not reviewed.