Hover or tap underlined Spanish terms to see their translation and exam tip.
Respecto al angulo sidereo, señale la respuesta CORRECTA:Concerning Sidereal Hour Angle, select the CORRECT answer:
Show the answer
Correct answer: a) It is the angular distance measured westward along the celestial equator from Aries to the body’s hour circle.
Why it is correct
Sidereal Hour Angle (SHA / AS) is the angular distance measured westward (0° to 360°) along the celestial equator from the First Point of Aries (♈) to the body’s hour circle.
Why the others are not
- b) The angle between the ecliptic and the celestial equator is the obliquity of the ecliptic (≈ 23° 27′).
- c) Measured westward from the observer’s upper meridian to the body is the Local Hour Angle (LHA).
- d) The interval between two passages of the Sun through Aries is the tropical year.
How to work it out in the exam
- Sidereal Hour Angle (SHA): angular distance westward along the celestial equator from Aries to the body’s hour circle.
Where this question comes from
- Ministerio de Transportes (Madrid) · 2019 · Convocatoria de junio · CY Test 1 · question 8 Official paper · Official answer key
- Ministerio de Transportes (Madrid) · 2019 · Convocatoria de junio · CY Test 2 · question 9 Official paper · Official answer key
Pending instructor review. Machine translation, not reviewed.