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physical object > natural object > celestial body > star > giant > red giant
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red giant comparison table
Subject has spectral type is part of has extent has age has surface temperature has orbital period 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 been observ has location has angular momentum has distance has radiation at surface has B magnitude has temperature has abundance M6e-M9e III has prototype has spectra has period is usually part of has proper motion has amplitude has energy source has energy production has discoverer has catalog has absolute magnitude has U magnitude has volume has momentum has apparent magnitude has material has mass has image has name designated with has observable variation time scale has synonym has definition has discovery date has luminosity class has number of star
MiraM star, R star, or N stardisk  greater than 1000 Kelvin naked eye 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 Earthfor many centuriesor center of gravity 70 pcwhich is diffused out from the hotter core  half the stars in the solar neighborhood are members of star systems-has source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago PressMira 331 daysasterism 5 maggravitational contraction and or fusionwhich takes place primarily within the coreDavid Fabriciusstar catalog    brighter than 5hydrogen, 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 decadesomicron CetA irregular long-period intrinsic variable. It was named Mira ("wonderful") in 1596 by Fabricius, who made the first recorded observations of its brightness fluctuations. Mira is a double star with a faint B companion which is itself variable.1596III2

Next giantSpica    Upgiant, M star    Previous giantPlaskett's star