IOAA 2018, Наблюдения — Задача 2. O2

12th International Olympiad on Astronomy and Astrophysics — Observational Competition and Mountain Team Competition · 20 т.

Внимание: Бележка към темата

The archive includes separate suggested KOR corrections. O4 changes the accepted constellation; O5 proposes 1.7° while the final night key prints 1.8°. Both versions and their original scoring are retained. The Mountain task has no supplied key.

Условие

Day — Instructions

  1. This part of the contest consists of 4 problems, is 1 hour long and is worth a total of 100 points.

  2. Only blue pen should be used to fill in the answer boxes, draw and mark on the star chart.

  3. You are not allowed to leave your working desk without permission. If you need any assistance (malfunctioning calculator, need to visit a restroom, etc.), please put up your hand to signal the supervisor.

  4. The beginning and end of the competition will be indicated by a long sound signal.

  5. Wait at your table until your envelope is collected. Once all envelopes are collected, your student guide will escort you out of the competition area.

Figure 2 is a star chart of a recent opposition of Jupiter. The grid in the figure is the ecliptic coordinates. Please estimate the date of this opposition, to the nearest day.

Star chart with an ecliptic coordinate grid: slightly tilted lines of ecliptic latitude 10°, 0° (thick line, the ecliptic) and −10°, and lines of ecliptic longitude labelled 300°, 290°, 280° and 270°. Dotted lines mark constellation boundaries. The label “Sgr” is at upper left; the stars of Sagittarius are joined by constellation lines and labelled with Greek letters (μ, λ, δ, γ, ε, σ, φ, τ, ζ, π, ο, ω, ρ, χ and others). A large black dot labelled “Jupiter” lies on the ecliptic just east of the 290° longitude line.
Figure 2

Отговори

Решение

Оригинал в Архива: Observational Problems.pdf · официални решения: 18_obs_day_sol.pdf · допълнителни данни: 18_obs_night_sol.pdf · допълнителни данни: IOAA-Observation.zip / IOAA-Observation/Suggestion by KOR/IOAA2018 Observational Solution (Day)_correction.docx · допълнителни данни: IOAA-Observation.zip / IOAA-Observation/Suggestion by KOR/IOAA2018 Observational Solution(Night-Cloudy)_correction.docx · допълнителни данни: IOAA-Observation.zip / IOAA-Observation/Suggestion by KOR/Readme_correction.docx · допълнителни данни: 18_team.pdf