|
gptkbp:instanceOf
|
gptkb:star
gptkb:binary_star_system
|
|
gptkbp:age
|
300 million years
|
|
gptkbp:apparentMagnitude
|
3.65
|
|
gptkbp:BayerDesignation
|
gptkb:α_Draconis
|
|
gptkbp:catalogueNumber
|
gptkb:BD+65_879
gptkb:HD_123299
gptkb:HIP_68756
gptkb:HR_5291
gptkb:ADS_8891
gptkb:FK5_496
gptkb:GC_19041
gptkb:SAO_169474
gptkb:WDS_J14044+6422
|
|
gptkbp:declination
|
+64° 22′ 33″
|
|
gptkbp:diameter
|
3.4 solar radii
|
|
gptkbp:distanceFromEarth
|
303 light years
|
|
gptkbp:hasCompanion
|
gptkb:Alpha_Draconis_B
|
|
gptkbp:locatedIn
|
constellation Draco
|
|
gptkbp:luminosity
|
250 times solar luminosity
|
|
gptkbp:mass
|
2.8 solar masses
|
|
gptkbp:metallicity
|
-0.05 [Fe/H]
|
|
gptkbp:notableFor
|
former pole star
used in ancient Egyptian astronomy
|
|
gptkbp:orbitType
|
51.4 days
|
|
gptkbp:otherName
|
gptkb:Thuban
|
|
gptkbp:parallax
|
10.76 mas
|
|
gptkbp:properMotionRA
|
-17.34 mas/yr
-19.24 mas/yr
|
|
gptkbp:rightAscension
|
14h 04m 23.3s
|
|
gptkbp:spectralType
|
A0IV
|
|
gptkbp:temperature
|
10,100 K
|
|
gptkbp:visibleToNakedEye
|
true
|
|
gptkbp:wasPoleStar
|
circa 2700 BC
|
|
gptkbp:bfsParent
|
gptkb:Thuban
|
|
gptkbp:bfsLayer
|
7
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Alpha Draconis
|