Statements (17)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:variable_star
|
| gptkbp:cataloguedIn |
gptkb:General_Catalogue_of_Variable_Stars
|
| gptkbp:commonIn |
young stars
|
| gptkbp:discoveredBy |
gptkb:G._E._Kron
|
| gptkbp:discoveredIn |
1947
|
| 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
|
| https://www.w3.org/2000/01/rdf-schema#label |
BY Draconis variable
|