64192
An example is RS Ophiuchi , which is known to have flared six times ( in 1898 , 1933 , 1958 , 1967 , 1985 , and 2006 ) .
 RS Ophiuchi
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:
 RS Ophiuchi