Statements (20)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:planetary_nebula
|
| gptkbp:alsoKnownAs |
gptkb:NGC_7293
gptkb:Helix_Nebula |
| gptkbp:angularSize |
25 arcminutes
|
| gptkbp:apparentMagnitude |
7.6
|
| gptkbp:cataloguedIn |
gptkb:Caldwell_catalogue
gptkb:NGC_catalogue |
| gptkbp:centralStarType |
white dwarf
|
| gptkbp:discoveredBy |
gptkb:Karl_Ludwig_Harding
|
| gptkbp:discoveredIn |
1824
|
| gptkbp:distanceFromEarth |
about 650 light-years
|
| gptkbp:hasViewOf |
amateur telescopes
|
| https://www.w3.org/2000/01/rdf-schema#label |
Caldwell 63
|
| gptkbp:locatedIn |
gptkb:constellation_Aquarius
|
| gptkbp:notableFor |
large apparent size
one of the closest planetary nebulae to Earth |
| gptkbp:shape |
ring-shaped
|
| gptkbp:bfsParent |
gptkb:NGC_7293
gptkb:Helix_Nebula |
| gptkbp:bfsLayer |
7
|