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In observational astronomy , " culmination " is the instant of time of the transit of a celestial object ( the Sun , the Moon , a planet , a star , constellation or a deep-sky object ) across the observer 's local meridian .
 celestial object, Sun, Moon, planet, star, constellation
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 celestial object, Sun, Moon, planet, star, constellation