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gptkbp:instanceOf
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gptkb:star
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gptkbp:alsoKnownAs
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gptkb:Alpha_Ursae_Minoris
gptkb:Polaris
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gptkbp:apparentMagnitude
|
1.98
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gptkbp:catalogueNumber
|
gptkb:HR_424
gptkb:AG+89_8
gptkb:CCDM_J02318+8915A
gptkb:GEN#_+1.00008890
gptkb:GSC_04664-00650
gptkb:IDS_02298+8907_A
gptkb:NSV_10000
gptkb:PLX_573.00
gptkb:TYC_4664-650-1
gptkb:UBV_10000
gptkb:WDS_J02318+8915A
gptkb:BD+88_8
gptkb:FK5_907
gptkb:HD_8890
gptkb:HIP_11767
gptkb:SAO_308
gptkb:WDS_J02318+8915
gptkb:2MASS_J02314909+8915037
gptkb:AAVSO_0227+88
gptkb:ADS_1477
gptkb:GC_2273
gptkb:IRAS_02268+8902
gptkb:PLX_573
PPM 20000
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gptkbp:component
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gptkb:Polaris_Aa
binary star system
Polaris Ab
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gptkbp:constellation
|
gptkb:Ursa_Minor
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gptkbp:declination
|
+89° 15′ 50.8″
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gptkbp:discoveredBy
|
ancient astronomers
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gptkbp:distanceFromEarth
|
433 light years
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gptkbp:epoch
|
gptkb:J2000
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gptkbp:futureNorthStar
|
gptkb:Vega_(in_about_12,000_years)
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|
https://www.w3.org/2000/01/rdf-schema#label
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Pole Star
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gptkbp:locatedIn
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gptkb:Northern_Hemisphere
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gptkbp:luminosity
|
2,500 times Sun (Polaris Aa)
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gptkbp:mass
|
5.4 solar masses (Polaris Aa)
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gptkbp:notableFor
|
closest Cepheid variable to Earth
nearly aligned with Earth's rotational axis
|
|
gptkbp:precessionalMovement
|
will not always be the North Star
|
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gptkbp:rightAscension
|
02h 31m 49.09s
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gptkbp:role
|
current North Star
|
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gptkbp:spectralType
|
F7
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gptkbp:tertiaryComponent
|
gptkb:Polaris_B
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gptkbp:usedFor
|
gptkb:navigation
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gptkbp:variableType
|
variable star
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gptkbp:bfsParent
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gptkb:Polaris
|
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gptkbp:bfsLayer
|
5
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