|
gptkbp:instanceOf
|
gptkb:star
|
|
gptkbp:age
|
about 70 million years
|
|
gptkbp:alsoKnownAs
|
gptkb:Nord
gptkb:Pole_Star
gptkb:Polaris
|
|
gptkbp:apparentMagnitude
|
1.98
|
|
gptkbp:catalogueNumber
|
gptkb:HR_424
gptkb:Alpha_Ursae_Minoris
gptkb:BD+88_8
gptkb:HD_8890
gptkb:HIP_11767
gptkb:SAO_308
|
|
gptkbp:closestBrightStarToNorthCelestialPole
|
true
|
|
gptkbp:component
|
gptkb:Polaris_Aa
Polaris Ab
|
|
gptkbp:containsPlanet
|
true
|
|
gptkbp:declination
|
+89° 15′ 50.8″
|
|
gptkbp:diameter
|
about 37.5 solar radii
|
|
gptkbp:discoveredBy
|
ancient civilizations
|
|
gptkbp:distanceFromEarth
|
about 433 light years
|
|
gptkbp:epoch
|
gptkb:J2000
|
|
gptkbp:hasCompanionStars
|
true
|
|
gptkbp:historicalSignificance
|
true
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Stella Polaris
|
|
gptkbp:isBrightestStarInUrsaMinor
|
true
|
|
gptkbp:isCepheidStandardCandle
|
true
|
|
gptkbp:isCepheidVariable
|
true
|
|
gptkbp:isEvolvingOffMainSequence
|
true
|
|
gptkbp:isNotVisibleFromSouthernHemisphere
|
true
|
|
gptkbp:isPartOfLittleDipperAsterism
|
true
|
|
gptkbp:isReferencePointForCelestialNavigation
|
true
|
|
gptkbp:isUsedInAstrometry
|
true
|
|
gptkbp:isUsedInTimekeeping
|
true
|
|
gptkbp:isVisibleFromNorthernHemisphere
|
true
|
|
gptkbp:locatedIn
|
gptkb:Ursa_Minor
|
|
gptkbp:luminosity
|
about 2,500 times Sun
|
|
gptkbp:mass
|
about 5.4 solar masses
|
|
gptkbp:metallicity
|
[Fe/H] = 0.07
|
|
gptkbp:orbitalPeriodOfAaAb
|
29.59 years
|
|
gptkbp:orbitalPeriodOfAB
|
about 18,000 years
|
|
gptkbp:parallax
|
7.54 mas
|
|
gptkbp:properMotionRA
|
-11.74 mas/yr
+44.22 mas/yr
|
|
gptkbp:rightAscension
|
02h 31m 49.09s
|
|
gptkbp:spectralType
|
F7
|
|
gptkbp:temperature
|
about 6,015 K
|
|
gptkbp:tertiaryComponent
|
gptkb:Polaris_B
|
|
gptkbp:usedForNavigation
|
true
|
|
gptkbp:bfsParent
|
gptkb:Knut_Erik_Jensen
|
|
gptkbp:bfsLayer
|
6
|