Hover or tap underlined Spanish terms to see their translation and exam tip.
Cuando la declinación de un astro con declinación N es mayor que 90º menos la latitud de un observador del hemisferio norte:When a north-declination body’s declination exceeds 90º minus a northern observer’s latitude:
Show the answer
Correct answer: c) It is always above the horizon
Why it is correct
That body is circumpolar: it circles the pole without setting. Its hour angle does reach 180º, at lower transit.
Why the others are not
- a) It does, at lower transit.
- b) Only if dec = latitude.
- d) Option a is false.
How to work it out in the exam
- Dec > 90º − lat: circumpolar.
Where this question comes from
- Junta de Andalucía · 2025 · 2ª convocatoria · CY Módulo de navegación · question 5 Official paper · Official answer key
Pending instructor review. Machine translation, not reviewed.