|
gptkbp:instanceOf
|
gptkb:star
binary star system
|
|
gptkbp:age
|
1.2 billion years
|
|
gptkbp:apparentMagnitude
|
2.63
|
|
gptkbp:BayerDesignation
|
gptkb:α_Serpentis
|
|
gptkbp:catalogueNumber
|
gptkb:BD+06_2986
gptkb:HD_141680
gptkb:HIP_77070
gptkb:HR_5889
gptkb:SAO_121655
|
|
gptkbp:constellationPart
|
gptkb:Serpens_Caput
|
|
gptkbp:declination
|
+06° 25′ 32″
|
|
gptkbp:diameter
|
12 solar radii
|
|
gptkbp:distanceFromEarth
|
74 light years
|
|
gptkbp:eclipticLatitude
|
+0.6°
235.5°
|
|
gptkbp:FlamsteedDesignation
|
gptkb:24_Serpentis
|
|
gptkbp:hasCompanion
|
gptkb:Alpha_Serpentis_B
gptkb:Alpha_Serpentis_C
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Alpha Serpentis
|
|
gptkbp:locatedIn
|
constellation Serpens
|
|
gptkbp:luminosity
|
70 times solar luminosity
|
|
gptkbp:mass
|
2.2 solar masses
|
|
gptkbp:metallicity
|
[Fe/H] = -0.03
|
|
gptkbp:nameMeaning
|
gptkb:Serpent's_Neck
|
|
gptkbp:otherName
|
gptkb:Cor_Serpentis
gptkb:Unukalhai
|
|
gptkbp:parallax
|
44.10 mas
|
|
gptkbp:properMotionRA
|
-44.06 mas/yr
-44.39 mas/yr
|
|
gptkbp:radialVelocity
|
-10.6 km/s
|
|
gptkbp:rightAscension
|
15h 44m 16.1s
|
|
gptkbp:spectralType
|
K2III
|
|
gptkbp:temperature
|
4,498 K
|
|
gptkbp:variableStar
|
no
|
|
gptkbp:visibleToNakedEye
|
true
|
|
gptkbp:bfsParent
|
gptkb:Serpens
|
|
gptkbp:bfsLayer
|
6
|