|
gptkbp:instanceOf
|
gptkb:star
variable star
|
|
gptkbp:apparentMagnitude
|
5.71 – 14.8
|
|
gptkbp:cataloguedIn
|
gptkb:Henry_Draper_Catalogue
gptkb:Hipparcos_Catalogue
gptkb:2MASS
gptkb:Bright_Star_Catalogue
|
|
gptkbp:composition
|
carbon-rich
hydrogen-deficient
|
|
gptkbp:constellation
|
gptkb:Corona_Borealis
|
|
gptkbp:declination
|
+28° 09′ 24.3″
|
|
gptkbp:diameter
|
85 solar radii
|
|
gptkbp:discoveredBy
|
gptkb:Edward_Pigott
|
|
gptkbp:discoveredIn
|
1795
|
|
gptkbp:distanceFromEarth
|
1,400 parsecs
|
|
gptkbp:evolutionary_stage
|
post-asymptotic giant branch
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
R Coronae Borealis
|
|
gptkbp:luminosity
|
10,000 solar luminosities
|
|
gptkbp:mass
|
0.8 solar masses
|
|
gptkbp:metallicity_[Fe/H]
|
−0.5
|
|
gptkbp:notable_for
|
sudden, unpredictable drops in brightness
|
|
gptkbp:otherDesignation
|
gptkb:2MASS_J15483441+2809243
gptkb:BD+28_2562
gptkb:HD_141527
gptkb:HIP_77512
gptkb:HR_5884
gptkb:SAO_84653
|
|
gptkbp:parallax
|
0.71 mas
|
|
gptkbp:parallax_error
|
0.23 mas
|
|
gptkbp:proper_motion_(Dec)
|
−6.46 mas/yr
|
|
gptkbp:proper_motion_(RA)
|
−2.13 mas/yr
|
|
gptkbp:rightAscension
|
15h 48m 34.41s
|
|
gptkbp:spectralType
|
F7Ib
|
|
gptkbp:temperature
|
6,750 K
|
|
gptkbp:variableType
|
variable star
|
|
gptkbp:bfsParent
|
gptkb:variable_star
|
|
gptkbp:bfsLayer
|
6
|