22491
Players are able to view the Rho Cancri ( 55 Cancri ) star in the constellation of Cancer ; they can see the five known planets in the system .
 Rho Cancri ( 55 Cancri ), constellation, Cancer
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:
 Rho Cancri ( 55 Cancri ), constellation, Cancer