4567
First observed in early February , 1843 , it raced toward an incredibly close perihelion of less than 830,000 " km on February 27 , 1843 ; at this time it was observed in broad daylight roughly a degree away from the Sun .
 astronomical object: Sun
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 astronomical object: Sun