Statements (23)
| Predicate | Object |
|---|---|
| gptkbp:instance_of |
gptkb:Nebula_Award
|
| gptkbp:apparent_magnitude |
13.5
|
| gptkbp:contains_star |
a hot white dwarf
|
| gptkbp:declination |
+6° 24' 30"
|
| gptkbp:diameter |
0.5 arcminutes
|
| gptkbp:discovered_by |
gptkb:William_Herschel
|
| gptkbp:discovery_year |
1787
1788 |
| gptkbp:distance_from_earth |
approximately 2,000 light years
approximately 2,500 light years |
| gptkbp:emissions_standard |
H-alpha
|
| gptkbp:exhibition |
gptkb:New_General_Catalogue
|
| gptkbp:features |
ring structure
|
| gptkbp:has_spectral_type |
O-type
|
| https://www.w3.org/2000/01/rdf-schema#label |
NGC 6781
|
| gptkbp:located_in |
constellation Aquila
|
| gptkbp:location |
gptkb:Aquila_constellation
|
| gptkbp:right_ascension |
19h 12m 54s
|
| gptkbp:size |
about 1.5 arcminutes
|
| gptkbp:type |
gptkb:Nebula_Award
ring nebula |
| gptkbp:bfsParent |
gptkb:Aquila
|
| gptkbp:bfsLayer |
5
|