Съдържание

Условие Решение

IAO 2013, Наблюдения, α/β — Задача 11

Оригинал на условието (PDF)Съобщи за грешка

Всички материали от IAO 2013

XVIII International Astronomy Olympiad. Observational round. Questions. Clear sky · 6 септември 2013 г.

Условие

a) Find the horizontal coordinates of Thuban (α Dra).

b) Find the zenith distance of Alcor (near ζ Ursae Majoris).

Решение

a) Horizontal coordinates

The official key gives values for four observing groups (mid-round times). Both printed azimuth conventions are retained.

Group	Time	Azimuth	Parenthesized azimuth	Altitude $h$
I	22:10	$320^{\circ}\pm5^{\circ}$	$140^{\circ}\pm5^{\circ}$	$47^{\circ}\pm5^{\circ}$
II	22:45	$324^{\circ}\pm5^{\circ}$	$144^{\circ}\pm5^{\circ}$	$44^{\circ}\pm5^{\circ}$
III	23:35	$328^{\circ}\pm5^{\circ}$	$148^{\circ}\pm5^{\circ}$	$40^{\circ}\pm5^{\circ}$
IV	00:10	$332^{\circ}\pm5^{\circ}$	$152^{\circ}\pm5^{\circ}$	$37^{\circ}\pm5^{\circ}$

b) Zenith distance

Group	Time	Zenith distance
I	22:10	$53^{\circ}\pm5^{\circ}$
II	22:45	$56^{\circ}\pm5^{\circ}$
III	23:35	$60^{\circ}\pm5^{\circ}$
IV	00:10	$63^{\circ}\pm5^{\circ}$

Time limit

The maximum total time for all tasks is 20 minutes.

Оригинал в Архива: observational.pdf · официални решения: obssol1.png · допълнителни данни: obssol2.png · допълнителни данни: obs_map1.pdf · допълнителни данни: obs_map2.pdf