Statements (17)
Predicate | Object |
---|---|
gptkbp:instanceOf |
variable star
|
gptkbp:cataloguedIn |
gptkb:General_Catalogue_of_Variable_Stars
|
gptkbp:commonIn |
young stars
|
gptkbp:discoveredBy |
gptkb:G._E._Kron
|
gptkbp:discoveredIn |
1947
|
https://www.w3.org/2000/01/rdf-schema#label |
BY Draconis variable
|
gptkbp:lightVariationAmplitude |
0.5 magnitudes
|
gptkbp:location |
gptkb:main_sequence
|
gptkbp:namedAfter |
gptkb:BY_Draconis
|
gptkbp:periodRange |
less than 1 day to 120 days
|
gptkbp:spectralType |
M-type
K-type |
gptkbp:variabilityCause |
chromospheric activity
starspots |
gptkbp:variant |
rotational modulation
|
gptkbp:bfsParent |
gptkb:Bessel's_star
|
gptkbp:bfsLayer |
6
|