Hover or tap underlined Spanish terms to see their translation and exam tip.
Cuando dos astros se encuentran en el mismo almicantarat:When two celestial bodies lie on the same almucantar:
Show the answer
Correct answer: b) They have the same altitude.
Why it is correct
An almucantar (parallel of altitude) is a small circle on the celestial sphere parallel to the true horizon; every point on the same almucantar has, by definition, the same true altitude (and zenith distance).
Why the others are not
- a) Circles of equal declination are parallels of declination, parallel to the equator.
- c) Two bodies at the same altitude at one instant generally have different declinations and hour angles, so they rise and set at different times.
- d) Option c) is false.
How to work it out in the exam
- Almucantar: small circle parallel to the horizon; all bodies on it have the same altitude.
Where this question comes from
- Junta de Andalucía · 2016 · 3ª convocatoria · CY Módulo de navegación · question 4 Official paper · Official answer key
Pending instructor review. Machine translation, not reviewed.