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physical object > natural object > celestial body > star > Delta Del star
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Delta Del star comparison table
Subject has spectral type has extent has age has surface temperature has velocity has surface density has star surface temperature has optical brightness variation has V magnitude has parallax has observational problem has light curve has position on celestial sphere has location has angular momentum has radiation at surface has B magnitude has temperature has prototype has spectra has period has proper motion has amplitude has energy source has energy production has catalog has absolute magnitude is a kind of has U magnitude has volume has momentum has apparent magnitude has material has mass has name designated with has observable variation time scale has synonym has definition
dwarf CepheidA star to F star  greater than 1000 Kelvindetermined from proper motion and radial velocitywhich depends on luminosity class 0.2 magnitudes or greater from the point of view of Earth's orbitsome difficulty in distinguishing between various kinds from the point of view of Earthor center of gravity which is diffused out from the hotter core  delta Cephei 1 to 3 hours  gravitational contraction and or fusionwhich takes place primarily within the corestar catalog Cepheid    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 decadesultrashort-period CepheidA group of pulsating variable stars with small variations in amplitude. They lie in the lower part of the Cepheid instability strip.

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