|
gptkbp:instanceOf
|
binary star system
|
|
gptkbp:apparentMagnitude
|
3.52
-3.9
|
|
gptkbp:catalogueNumber
|
gptkb:ADS_11871
gptkb:BD+33_3224
gptkb:HD_174638
gptkb:HIP_92420
gptkb:HR_7106
gptkb:SAO_67439
gptkb:WDS_J18501+3322
|
|
gptkbp:component
|
gptkb:Beta_Lyrae_A
gptkb:Beta_Lyrae_B
|
|
gptkbp:declination
|
+33° 21′ 46″
|
|
gptkbp:discoveredBy
|
gptkb:John_Goodricke
|
|
gptkbp:discoveredIn
|
1784
|
|
gptkbp:distanceFromEarth
|
960 light-years
|
|
gptkbp:eclipsingBinary
|
yes
|
|
gptkbp:hasAccretionDisk
|
yes
|
|
gptkbp:hasCircumstellarMaterial
|
yes
|
|
gptkbp:hasEclipses
|
yes
|
|
gptkbp:hasLightCurve
|
yes
|
|
gptkbp:hasMassTransfer
|
yes
|
|
gptkbp:hasSpectroscopicBinary
|
yes
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Beta Lyrae
|
|
gptkbp:IAUApprovedName
|
gptkb:Sheliak
|
|
gptkbp:isPrototypeOf
|
gptkb:Beta_Lyrae_variables
|
|
gptkbp:lightCurveType
|
continuous variation
|
|
gptkbp:locatedIn
|
constellation Lyra
|
|
gptkbp:luminosity
|
25,000 times Sun
|
|
gptkbp:massTransfer
|
yes
|
|
gptkbp:metallicity
|
-0.07 [Fe/H]
|
|
gptkbp:namedAfter
|
gptkb:Lyra_constellation
|
|
gptkbp:orbitType
|
12.9414 days
|
|
gptkbp:otherName
|
gptkb:Sheliak
|
|
gptkbp:parallax
|
0.22 mas
3.39 mas
|
|
gptkbp:primaryStarMass
|
3.0 solar masses
|
|
gptkbp:primaryStarType
|
B7II
|
|
gptkbp:properMotionRA
|
yes
-4.59 mas/yr
2.85 mas/yr
|
|
gptkbp:radialVelocity
|
-19.5 km/s
|
|
gptkbp:rightAscension
|
18h 50m 04.8s
|
|
gptkbp:secondaryStarMass
|
13 solar masses
|
|
gptkbp:secondaryStarType
|
B6-8IIp
|
|
gptkbp:spectralType
|
B7II
|
|
gptkbp:temperature
|
13,300 K
|
|
gptkbp:variableStar
|
gptkb:Vega_2
|
|
gptkbp:variableType
|
gptkb:Beta_Lyrae_variable
|
|
gptkbp:bfsParent
|
gptkb:binary_stars
|
|
gptkbp:bfsLayer
|
5
|