|
gptkbp:instanceOf
|
concert hall
|
|
gptkbp:discoveredBy
|
Bruce Macintosh
Christian Marois
David Lafreniere
Patrick Ingraham
Rene Doyon
Travis Barman
|
|
gptkbp:discoveredIn
|
2008
|
|
gptkbp:distanceFromEarth
|
1.5 solar masses
129 light years
|
|
gptkbp:galaxyType
|
stellar classification
|
|
gptkbp:hasAsteroidBeltLikeDisk
|
yes
|
|
gptkbp:hasDebrisDisk
|
yes
|
|
gptkbp:hasExoplanet
|
gptkb:HR_8799_b
gptkb:HR_8799_c
gptkb:HR_8799_d
gptkb:HR_8799_e
|
|
gptkbp:hasInnerDebrisDisk
|
yes
|
|
gptkbp:hasKuiperBeltLikeDisk
|
yes
|
|
gptkbp:hasOuterDebrisDisk
|
yes
|
|
gptkbp:hostedBy
|
gptkb:HR_8799
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
HR 8799 planetary system
|
|
gptkbp:locatedIn
|
gptkb:Pegasus
|
|
gptkbp:notableFor
|
first directly imaged multi-planet system
|
|
gptkbp:rating
|
4
|
|
gptkbp:starAge
|
30-90 million years
|
|
gptkbp:starAlternateName
|
gptkb:BD+21_4584
gptkb:HD_218396
gptkb:HIP_114189
SAO 91061
TYC 1717-1061-1
|
|
gptkbp:starApparentMagnitude
|
5.96
|
|
gptkbp:starEffectiveTemperature
|
7430 K
|
|
gptkbp:starLuminosity
|
5.05 solar luminosities
|
|
gptkbp:starMetallicity
|
-0.47 [Fe/H]
|
|
gptkbp:starRadius
|
1.34 solar radii
|
|
gptkbp:bfsParent
|
gptkb:HR_8799
|
|
gptkbp:bfsLayer
|
7
|