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Hover or tap underlined Spanish terms to see their translation and exam tip.

El valor del Angulo Sidéreo de una estrella concreta se mide en el Ecuador Celeste desde:The sidereal hour angle of a given star is measured on the celestial equator from:

Show the answer

Correct answer: b) The hour circle of the First Point of Aries to the star’s hour circle.

Why it is correct

The sidereal hour angle starts at Aries.

Why the others are not

  • a) The origin is Aries.
  • c) That is the body’s local hour angle.
  • d) That is the local hour angle of Aries.

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.