41214
The system is the brightest member of the open cluster NGC 2451 , over two magnitudes brighter than every other star in the cluster .
 astronomical object: NGC 2451
Given options, please tell me the categories of all the listed entity words.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} 
 Entities: NGC 2451 
Answer:
 astronomical object: NGC 2451