Sirius star

GPTKB entity

Statements (55)
Predicate Object
gptkbp:instanceOf gptkb:star
gptkbp:age ~242 million years
gptkbp:apparentMagnitude -1.46
+1.42
gptkbp:binarySystem true
gptkbp:brightestStar gptkb:Procyon
gptkbp:catalogueNumber gptkb:BD-16_1591
gptkb:LHS_219
gptkb:WDS_J06451-1643A
gptkb:FK5_208
gptkb:GC_8896
gptkb:GJ_244
gptkb:HD_48915
gptkb:HIP_32349
gptkb:HR_2491
gptkb:SAO_151881
ADS 5423 A
2MASS J06450887-1642566
CCDM J06451-1643A
CD-16 1591
PLX 1650
PPM 217364
gptkbp:colorIndexB-V +0.00
gptkbp:constellation gptkb:Canis_Major
gptkbp:culturalSignificance gptkb:Dog_Star
associated with Egyptian goddess Sopdet
gptkbp:declination -16° 42′ 58″
gptkbp:diameter 1.711 solar radii
gptkbp:discoveredBy Ancient astronomers
gptkbp:distanceFromEarth 8.6 light years
gptkbp:firstWhiteDwarfDiscovered gptkb:Sirius_B
gptkbp:hasCompanion gptkb:Sirius_B
white dwarf (Sirius B)
gptkbp:hasViewOf most of Earth
Summer sky (Southern Hemisphere)
Winter sky (Northern Hemisphere)
gptkbp:heliacalRising marked ancient Egyptian New Year
https://www.w3.org/2000/01/rdf-schema#label Sirius star
gptkbp:luminosity 25.4 times Sun
gptkbp:mass 2.02 solar masses
gptkbp:metallicity [Fe/H] = +0.5
gptkbp:notableFor brightest star in the night sky
gptkbp:observedBy gptkb:Hipparcos_satellite
gptkbp:otherName gptkb:Alpha_Canis_Majoris
gptkbp:parallax 379.21 mas
gptkbp:partOf gptkb:Sirius_binary_system
gptkbp:properMotionRA -546.01 mas/yr in RA, -1223.07 mas/yr in Dec
gptkbp:radialVelocity -5.5 km/s
gptkbp:rightAscension 06h 45m 08.9s
gptkbp:rotationPeriod 5.5 days
gptkbp:spectralType A1V
gptkbp:temperature 9940 K
gptkbp:bfsParent gptkb:Sigi_(60-year_cycle)
gptkb:Sirius_Sector
gptkbp:bfsLayer 7