Hover or tap underlined Spanish terms to see their translation and exam tip.
Cuando un astro se encuentra en el meridiano inferior del lugar:When a celestial body is on the observer’s lower meridian:
Show the answer
Correct answer: a) Its altitude is at its minimum.
Why it is correct
In its apparent diurnal motion around the celestial axis, every body reaches its maximum altitude at upper meridian transit (LHA = 0°) and its minimum altitude (lower culmination) when crossing the observer’s lower meridian (LHA = 180°).
Why the others are not
- b) Rising and setting take place when crossing the horizon, not at lower meridian transit.
- c) On the lower meridian the local hour angle is 180° (12 hours), not 0°.
- d) Options b) and c) are false.
How to work it out in the exam
- Lower meridian transit: the body reaches its minimum altitude (with LHA = 180°).
Where this question comes from
- Junta de Andalucía · 2026 · 1ª convocatoria · CY Módulo de navegación · question 7 Official paper · Official answer key
Pending instructor review. Machine translation, not reviewed.