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| physical object > natural object > celestial body > collection of stars > star system > binary star > close binary > nova > dwarf nova > U Geminorum star > U Geminorum | 
| U Geminorum comparison table | |||||
| Subject | is part of | is an instance of | is a kind of | has image | has definition | 
|---|---|---|---|---|---|
| U Geminorum star | dwarf nova | A type of dwarf nova. All U Geminorum stars are binaries containing a white dwarf and a red dwarf with total masses of roughly 1-2 Msun and with periods of less than 12 hours (period of U Gem, 1.5 × 104 seconds). About 150 are known. | |||
| U Geminorum | Milky Way | U Geminorum star | ![]()  | 
 Up: U Geminorum star