20606
It is located near the pointer stars of the Big Dipper in the constellation Ursa Major and is about 15 square degrees in size .
 Big Dipper, constellation, Ursa Major
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:
 Big Dipper, constellation, Ursa Major