Statements (17)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:galaxy
|
| gptkbp:alsoKnownAs |
gptkb:Cassiopeia_A
|
| gptkbp:apparentMagnitude |
6.0
|
| gptkbp:cataloguedIn |
gptkb:Third_Cambridge_Catalogue_of_Radio_Sources
|
| gptkbp:designation |
gptkb:Cas_A
|
| gptkbp:discoveredBy |
gptkb:Martin_Ryle
|
| gptkbp:discoveredIn |
1947
|
| gptkbp:distanceFromEarth |
about 11,000 light-years
|
| gptkbp:hasCentralCompactObject |
white dwarf
|
| gptkbp:hasUnit |
light-year
|
| https://www.w3.org/2000/01/rdf-schema#label |
3C 461
|
| gptkbp:locatedIn |
gptkb:Cassiopeia
|
| gptkbp:notableFor |
brightest extrasolar radio source at 1 GHz
|
| gptkbp:supernovaExplosionDate |
circa 1680
|
| gptkbp:type |
supernova
|
| gptkbp:bfsParent |
gptkb:Cassiopeia_A
|
| gptkbp:bfsLayer |
7
|