| 31. | The spectral class of the primary is A5.
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| 32. | However, the reason for the existence of such chemically peculiar, spectral class A0-F0 stars remains unclear.
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| 33. | The companion, HD 234121, is a magnitude + 8.27 main sequence star belonging to spectral class K0.
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| 34. | The MK spectral class is M0-M1.5 Iab.
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| 35. | The He I lines are weaker than the He II lines, leading to a WN6ha spectral class.
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| 36. | It has been assigned the latest known spectral class ( > Y2, initially estimated as > Y0 ).
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| 37. | It is a dwarf ( luminosity class V ) red ( spectral class M1 ) variable by rotation.
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| 38. | In 1968, the WR spectral classes were revised and HD 165763 was used as an example of class WC5.
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| 39. | It has spectral class e " Y1 and is located in constellation 31st-nearest star system to the Solar System.
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| 40. | Its spectral class is C6.3e.
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