Hover or tap underlined Spanish terms to see their translation and exam tip.
El arco de ecuador, contado de 0º a 360º desde el Primer Punto de Aries hacia el este, hasta el máximo de ascensión de un astro, es:Measured eastward 0º to 360º along the equator from the First Point of Aries to a body’s hour circle is:
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Correct answer: c) The Right Ascension of the body.
Why it is correct
The Right Ascension (RA / AR) of a celestial body is the arc of the celestial equator measured eastward (direct sense) from the First Point of Aries (♈), from 0° to 360° (or 0 h to 24 h), to the body’s hour circle.
Why the others are not
- a) Measured westward from Aries is the Sidereal Hour Angle.
- b) Sidereal Hour Angle (SHA = 360° − RA) is measured westward, not eastward.
- d) 'Máximo de ascensión' is a classic Spanish term for the body’s hour circle.
How to work it out in the exam
- Right Ascension (RA): equatorial arc 0° to 360° eastward from Aries to the body’s hour circle.
Where this question comes from
- Junta de Andalucía · 2016 · 3ª convocatoria · CY Módulo de navegación · question 8 Official paper · Official answer key
Pending instructor review. Machine translation, not reviewed.