|
gptkbp:instanceOf
|
gptkb:planetary_nebula
|
|
gptkbp:addedToMessierCatalogBy
|
gptkb:Charles_Messier
|
|
gptkbp:addedToMessierCatalogYear
|
1764
|
|
gptkbp:alsoKnownAs
|
gptkb:Omega_Nebula
gptkb:Horseshoe_Nebula
gptkb:Lobster_Nebula
gptkb:Swan_Nebula
|
|
gptkbp:angularSize
|
11 arcminutes × 6 arcminutes
|
|
gptkbp:apparentMagnitude
|
6.0
|
|
gptkbp:catalogueNumber
|
gptkb:Messier_17
gptkb:NGC_6618
|
|
gptkbp:contains
|
massive O-type stars
young open star cluster
massive B-type stars
|
|
gptkbp:discoveredBy
|
gptkb:Philippe_Loys_de_Chéseaux
|
|
gptkbp:discoveredIn
|
1745
|
|
gptkbp:distanceFromEarth
|
about 5,000 to 6,000 light-years
|
|
gptkbp:hasViewOf
|
gptkb:astronomer
small telescopes
|
|
gptkbp:locatedIn
|
gptkb:Sagittarius_constellation
|
|
gptkbp:nestType
|
gptkb:planetary_nebula
|
|
gptkbp:notableFor
|
active star formation
bright emission
|
|
gptkbp:partOf
|
gptkb:Milky_Way_Galaxy
|
|
gptkbp:bfsParent
|
gptkb:Sagittarius_OB1_association
gptkb:HD_168607
gptkb:Carina–Sagittarius_Arm
|
|
gptkbp:bfsLayer
|
8
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
M17 (Omega Nebula)
|