|
gptkbp:instanceOf
|
gptkb:star
gptkb:asteroid
|
|
gptkbp:age
|
900 million years
|
|
gptkbp:apparentMagnitude
|
5.47
+0.60
|
|
gptkbp:catalogueNumber
|
CD−88°120
HD 177482
HIP 94005
HR 7235
SAO 258857
|
|
gptkbp:colorIndexB-V
|
+0.13
+0.27
|
|
gptkbp:constellation
|
gptkb:Octans
|
|
gptkbp:declination
|
−88° 57′ 23″
|
|
gptkbp:diameter
|
4.4 solar radii
|
|
gptkbp:discoveredBy
|
gptkb:Nicolas-Louis_de_Lacaille
|
|
gptkbp:distanceFromEarth
|
270 light years
|
|
gptkbp:epoch
|
gptkb:J2000
|
|
gptkbp:galacticLatitude
|
304.9°
−29.8°
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Sigma Octantis
|
|
gptkbp:isSingleStar
|
yes
|
|
gptkbp:isSouthernPoleStar
|
yes
|
|
gptkbp:luminosity
|
44 solar luminosities
|
|
gptkbp:mass
|
1.59 solar masses
|
|
gptkbp:metallicity
|
−0.54
|
|
gptkbp:otherName
|
Polaris Australis
|
|
gptkbp:parallax
|
0.29 mas
12.06 mas
|
|
gptkbp:properMotionRA
|
+17.53 mas/yr
−16.18 mas/yr
|
|
gptkbp:rightAscension
|
21h 08m 47.9s
|
|
gptkbp:rotationPeriod
|
127 km/s
|
|
gptkbp:spectralType
|
F0IV
|
|
gptkbp:temperature
|
7,415 K
|
|
gptkbp:variableStar
|
yes
|
|
gptkbp:variant
|
gptkb:Delta_Scuti
|
|
gptkbp:visibleToNakedEye
|
barely
|
|
gptkbp:bfsParent
|
gptkb:Octans
gptkb:南極星
gptkb:南极星
|
|
gptkbp:bfsLayer
|
7
|