/[1]Sirius ARight ascension06පැය 45විනා 08.917තත්[2]Declination−16° 42′ 58.02″[2]Apparent magnitude (V)−1.46[3]Sirius BRight ascension06පැය 45විනා 09.0තත්[4]Declination−16° 43′ 06″[4]Apparent magnitude (V)8.44[5]CharacteristicsSirius AEvolutionary stageMain sequenceSpectral typeA0mA1 Va[6]U−B colour index−0.05[3]B−V colour index+0.00[3]Sirius BEvolutionary stageWhite dwarfSpectral typeDA2[5]U−B colour index−1.04[7]B−V colour index−0.03[7]AstrometryRadial velocity (Rv)−5.50[8] km/sSirius AProper motion (μ) RA: −546.01 mas/yr[9]  Dec.: −1,223.07 mas/yr[9] Parallax (π)379.21 ± 1.58 mas[9]Distance8.60 ± 0.04 ly (2.64 ± 0.01 pc)Absolute magnitude (MV)+1.43[10]Sirius BProper motion (μ) RA: −461.571 mas/yr[11]  Dec.: −914.520 mas/yr[11] Parallax (π)374.4896 ± 0.2313 mas[11]Distance8.709 ± 0.005 ly (2.670 ± 0.002 pc)Absolute magnitude (MV)+11.18[7]Orbit[12]Primaryα Canis Majoris ACompanionα Canis Majoris 