|
gptkbp:instanceOf
|
gptkb:star
|
|
gptkbp:age
|
200 million years
|
|
gptkbp:apparentMagnitude
|
1.93
|
|
gptkbp:BayerDesignation
|
gptkb:Alpha_Geminorum
|
|
gptkbp:catalogueNumber
|
gptkb:ADS_6175
gptkb:BD+32_1582
gptkb:HD_60179
gptkb:HIP_36850
gptkb:HR_2891
gptkb:SAO_60198
gptkb:WDS_J07346+3153
|
|
gptkbp:colorIndexB-V
|
−0.01
+0.00
|
|
gptkbp:component
|
gptkb:Castor_A
gptkb:Castor_B
gptkb:Castor_C
|
|
gptkbp:constellation
|
gptkb:Gemini
|
|
gptkbp:declination
|
+31° 53′ 18″
|
|
gptkbp:discoveredBy
|
gptkb:James_Bradley
|
|
gptkbp:discoveredIn
|
1718
|
|
gptkbp:distanceFromEarth
|
51 light-years
|
|
gptkbp:eponymOf
|
gptkb:Castor_(mythology)
|
|
gptkbp:hasExoplanet
|
no confirmed exoplanets
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Castor (star)
|
|
gptkbp:IAUApprovedName
|
gptkb:Castor
|
|
gptkbp:infraredPort
|
yes
|
|
gptkbp:luminosity
|
0.06 times Sun (Castor C)
13 times Sun (Castor B)
37 times Sun (Castor A)
|
|
gptkbp:mass
|
0.6 solar masses (Castor C)
1.7 solar masses (Castor B)
2.15 solar masses (Castor A)
|
|
gptkbp:metallicity
|
−0.02
|
|
gptkbp:name
|
gptkb:Castor
|
|
gptkbp:notableFor
|
binary star system
one of the brightest stars in Gemini
|
|
gptkbp:orbitType
|
467 years (A-B pair)
0.8 days (Castor Ca-Cb)
2.9 days (Castor Ba-Bb)
9.2 days (Castor Aa-Ab)
|
|
gptkbp:otherName
|
gptkb:Alpha_Geminorum
|
|
gptkbp:parallax
|
66.90 mas
|
|
gptkbp:radialVelocity
|
+1.3 km/s
|
|
gptkbp:rating
|
6
|
|
gptkbp:rightAscension
|
07h 34m 36.0s
|
|
gptkbp:rotationPeriod
|
18 km/s (Castor A)
33 km/s (Castor B)
|
|
gptkbp:separationFromPollux
|
4.5°
|
|
gptkbp:spectralType
|
A1V
A2Vm
|
|
gptkbp:spectroscopicBinary
|
yes
|
|
gptkbp:variableStar
|
yes
|
|
gptkbp:visibleToNakedEye
|
yes
|
|
gptkbp:XRaySource
|
yes
|
|
gptkbp:bfsParent
|
gptkb:HMS_Castor
|
|
gptkbp:bfsLayer
|
6
|