|
gptkbp:instanceOf
|
gptkb:star
|
|
gptkbp:age
|
~242 million years
|
|
gptkbp:apparentMagnitude
|
1.42
-1.46
|
|
gptkbp:BayerDesignation
|
gptkb:Alpha_Canis_Majoris
|
|
gptkbp:brightestStar
|
true
|
|
gptkbp:catalogue
|
gptkb:BD-16_1591
gptkb:WDS_J06451-1643A
gptkb:FK5_208
gptkb:HD_48915
gptkb:HIP_32349
gptkb:HR_2491
gptkb:SAO_151881
|
|
gptkbp:constellation
|
gptkb:Canis_Major
|
|
gptkbp:declination
|
-16° 42′ 58.017″
|
|
gptkbp:diameter
|
1.711 solar radii
|
|
gptkbp:discoveredBy
|
ancient astronomers
|
|
gptkbp:distanceFromEarth
|
8.6 light years
|
|
gptkbp:epoch
|
gptkb:J2000.0
|
|
gptkbp:FlamsteedDesignation
|
9 Canis Majoris
|
|
gptkbp:hasCompanion
|
gptkb:GJ_244_B
|
|
gptkbp:hasExoplanet
|
false
|
|
gptkbp:heliumContent
|
~0.28
|
|
gptkbp:heliumFusion
|
false
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
GJ 244 A
|
|
gptkbp:luminosity
|
25.4 times solar luminosity
|
|
gptkbp:mainStar
|
true
|
|
gptkbp:mass
|
2.02 solar masses
|
|
gptkbp:metallicity
|
[Fe/H] = +0.5
|
|
gptkbp:notableFor
|
brightest star in the night sky
|
|
gptkbp:otherName
|
gptkb:Sirius_A
|
|
gptkbp:parallax
|
379.21 mas
|
|
gptkbp:partOf
|
gptkb:Sirius_star_system
|
|
gptkbp:properMotionRA
|
-1223.07 mas/yr
-546.01 mas/yr
|
|
gptkbp:radialVelocity
|
-5.5 km/s
|
|
gptkbp:rightAscension
|
06h 45m 08.9173s
|
|
gptkbp:rotationPeriod
|
16 km/s
5.5 days
|
|
gptkbp:spectralType
|
A1V
|
|
gptkbp:temperature
|
9940 K
|
|
gptkbp:variableStar
|
no
|
|
gptkbp:bfsParent
|
gptkb:Sirius_A
|
|
gptkbp:bfsLayer
|
7
|