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physical object > natural object > celestial body > collection of stars > star system > binary star > spectroscopic binary > single line spectroscopic binary
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single line spectroscopic binary 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 color has location has angular momentum has absorption line has radiation at surface has B magnitude has temperature has abundance has spectra has period has proper motion has amplitude has energy source has energy production has eclipse duration has catalog has absolute magnitude has wavelength 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 luminosity class has number of star
Vela X-1B0.5 Ibcelestial sphere  11000 to 28000 K8.96 dayssingle line spectroscopic binarydetermined 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 Earthblue-whiteor center of gravity He Iwhich is diffused out from the hotter core  half the stars in the solar neighborhood are members of star systems    gravitational contraction and or fusionwhich takes place primarily within the core star catalog X-ray   7hydrogen, heliumof unseen companion 1.7 to 15 Msun, with a probable value of about 2.6 Msun.
  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 decades3U 0900-40I2

Next spectroscopic binarySpica    Upspectroscopic binary    Previous spectroscopic binaryPlaskett's star