|
gptkbp:instanceOf
|
gptkb:star
|
|
gptkbp:age
|
30-90 million years
|
|
gptkbp:alternativeName
|
gptkb:HR_8799
gptkb:HIP_114189
|
|
gptkbp:apparentMagnitude
|
5.96
|
|
gptkbp:catalogue
|
gptkb:Henry_Draper_Catalogue
gptkb:Hipparcos_Catalogue
gptkb:Bright_Star_Catalogue
|
|
gptkbp:constellation
|
gptkb:Pegasus
|
|
gptkbp:containsPlanet
|
true
|
|
gptkbp:declination
|
+21° 08′ 03″
|
|
gptkbp:diameter
|
1.44 solar radii
|
|
gptkbp:discoveredExoplanets
|
direct imaging
|
|
gptkbp:distanceFromEarth
|
129 light years
|
|
gptkbp:hasDebrisDisk
|
true
|
|
gptkbp:hasExoplanet
|
gptkb:HR_8799_b
gptkb:HR_8799_c
gptkb:HR_8799_d
gptkb:HR_8799_e
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
HD 218396
|
|
gptkbp:luminosity
|
5.05 solar luminosities
|
|
gptkbp:mass
|
1.47 solar masses
|
|
gptkbp:metallicity
|
[Fe/H] = -0.47
|
|
gptkbp:notableFor
|
first directly imaged multi-planet system
|
|
gptkbp:parallax
|
25.38 mas
|
|
gptkbp:properMotionRA
|
-49.63 mas/yr
107.93 mas/yr
|
|
gptkbp:radialVelocity
|
-12.6 km/s
|
|
gptkbp:rightAscension
|
23h 07m 28.7s
|
|
gptkbp:spectralType
|
A5V
|
|
gptkbp:temperature
|
7430 K
|
|
gptkbp:bfsParent
|
gptkb:HR_8799
|
|
gptkbp:bfsLayer
|
7
|