IOAA 2019 — Задача 2. PROBLEM 2
Автор: Olympiads XYZ · транскрипция на официалните материали
Проверена срещу оригинала на 13.9.2026 от същия модел, който я е транскрибирал (без независима проверка)
PLANETARIUM ROUND – ANSWER SHEET 3 projected images with questions. Each part is 15 minutes long. Total time: 45 minutes.
Внимание: Бележка към темата
This is an answer sheet for a planetarium round: the questions refer to a sky projected in the planetarium, which is not contained in the archived PDF. Many sub-tasks (marking positions on a star chart, determining azimuths, seasons, coordinates) cannot be answered from the printed pages alone.
Условие
We are standing somewhere on the Earth. The projected sky does not show any Solar System objects.
QUESTIONS / TASKS:
2.1. Determine the geographical latitude of this observing site: ……………° In which hemisphere is the site situated? N / S (Circle the right one.)
2.2. Determine the azimuth of the 3 brightest stars on the projected sky. Azimuth is measured from North towards the East. Write the name of these stars in English or using their Bayer designation and their azimuths in the list below.
Bright star / name: ……………………………… Az: ………………° Bright star / name: ……………………………… Az: ………………° Bright star / name: ……………………………… Az: ………………°
2.3. Yellow × signs show the position of 3 comets. Which comet is closest to the ecliptic? (Circle the number below.)
1 / 2 / 3
2.4. List nine constellations that contain circumpolar stars seen from the given observing site. (Use the official IAU abbreviations or IAU designation.)
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
2.5. Mintaka (δ Orionis) is setting at this moment. How many hours earlier did it rise? (To an accuracy of 15 minutes.)
……………
Решение
Внимание: Непълно решение
No solutions document in the archive; answers depend on the planetarium-projected sky.
Оригинал в Архива: PL-problem-final.pdf