Statements (22)
| Predicate | Object |
|---|---|
| gptkbp:instance_of |
gptkb:observatory
|
| gptkbp:bfsLayer |
4
|
| gptkbp:bfsParent |
gptkb:Lyra
gptkb:Herschel gptkb:Great_Refractor gptkb:William_Herschel gptkb:Omicron_Herculis |
| gptkbp:defines |
two stars that are close together in the sky
|
| gptkbp:example |
Alpha Centauri A and B
Sirius A and B Castor A and B Mizar A and B |
| gptkbp:historical_significance |
used for distance measurement
used for mass determination used for orbital dynamics studies |
| https://www.w3.org/2000/01/rdf-schema#label |
double stars
|
| gptkbp:is_essential_for |
stellar evolution studies
|
| gptkbp:research |
gptkb:musician
astrometry photometry |
| gptkbp:type_of |
binary stars
optical doubles |