USAAAO 2022, I кръг — Задача 25
USAAAO 2022 - First Round · 5 февруари 2022 г.
Условие
Suppose you are in Houston () on the fall equinox and you just observed Deneb culminating (upper culmination). Knowing the data in the table of exercise 24, what is the hour angle of the Sun?
(a) 8h41min
(b) 20h41min
(c) 12h00min
(d) 14h19min
(e) 18h22min
Отговори
- A
Решение
Using Deneb’s right ascension and hour angle (0h, since the star is culminating), we can find the local sidereal time:
Using the same equation for the Sun, that has :
We then obtain that 8h41min
Answer: A
Оригинал в Архива: usaaao_first_exam_2022_problems.pdf · официални решения: usaaao_first_exam_2022_solutions-1.pdf