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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
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U Geminorum comparison table
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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 GeminorumMilky WayU Geminorum star  

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