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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
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U Geminorum star comparison table
Subject has energy release has spectral type is part of has extent has age has surface temperature has orbital period become is an instance of has velocity has surface density has optical brightness variation has star surface temperature has V magnitude has parallax has light curve has observational problem has position on celestial sphere has location has angular momentum has radiation at surface has acronym has B magnitude has temperature has abundance has prototype has recovery time has spectra has proper motion has amplitude has energy source has energy production has catalog has outburst start time has absolute magnitude has U magnitude has volume has momentum has peak brightness has apparent magnitude has material has mass has image has name designated with has observable variation time scale has emission line has use has synonym has number of star
U Geminorum1044 ergs Milky Way  greater than 1000 Kelvin naked eye starU Geminorum stardetermined from proper motion and radial velocitywhich depends on luminosity class0.2 magnitudes or greater  from the point of view of Earth's orbit some difficulty in distinguishing between various kindsfrom the point of view of Earthor center of gravity which is diffused out from the hotter coreCV  half the stars in the solar neighborhood are members of star systemsU Geminorum    gravitational contraction and or fusionwhich takes place primarily within the corestar catalog       hydrogen, heliumgreater than 0.08 the sun's mass
  1. R, S, T, U, V, W, X, Y, or Z and the genitive of the latin constellation name
  2. RR, RS, RT, RU, RV, RW, RX, RY, or RZ and the genitive of the latin constellation name when the single letter designations are exhausted
  3. AA...AZ, BB...BZ, etc. (omitting J), which ends with QQ...QZ and the genitive of the latin constellation namewhen the RR...RZ designations are exhausted
  4. V 335, V 336, etc., when the double letter designations are exhausted
within a period of decades nova peak brightness distance determinationexplosive variable2

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