Hover or tap underlined Spanish terms to see their translation and exam tip.
El Punto de Aries:Regarding the First Point of Aries on the celestial sphere:
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Correct answer: d) All of the answers are correct.
Why it is correct
The First Point of Aries (♈) is the ascending node where the ecliptic crosses the celestial equator (vernal equinox); by definition it lies on both great circles and serves as the 0° origin for Sidereal Hour Angle.
Why the others are not
- a) True, but b) and c) are also true.
- b) True, but a) and c) are also true.
- c) True, but a) and b) are also true.
How to work it out in the exam
- First Point of Aries (♈): intersection of ecliptic and equator; origin where SHA = 0°.
Where this question comes from
- Junta de Andalucía · 2016 · 1ª convocatoria · CY Módulo de navegación · question 7 Official paper · Official answer key
Pending instructor review. Machine translation, not reviewed.