60552
When a binary system contains a compact object such as a white dwarf , neutron star or black hole , gas from the other ( donor ) star can accrete onto the compact object .
 compact object, white dwarf, neutron star
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:
 compact object, white dwarf, neutron star