|
gptkbp:instanceOf
|
gptkb:planetary_nebula
|
|
gptkbp:addedToMessierCatalogBy
|
gptkb:Charles_Messier
|
|
gptkbp:addedToMessierCatalogYear
|
1764
|
|
gptkbp:angularSize
|
11 arcminutes × 6 arcminutes
|
|
gptkbp:apparentMagnitude
|
6.0
|
|
gptkbp:associatedWith
|
star cluster NGC 6618
|
|
gptkbp:bestViewedIn
|
summer
|
|
gptkbp:catalogueNumber
|
gptkb:NGC_6618
gptkb:M17
|
|
gptkbp:constellation
|
gptkb:Sagittarius
|
|
gptkbp:contains
|
gptkb:planetary_nebula
massive O-type stars
young open star cluster
|
|
gptkbp:coordinates
|
RA 18h 20m 26s | Dec -16° 10′ 36″
|
|
gptkbp:diameter
|
~15 light-years
|
|
gptkbp:discoveredBy
|
gptkb:Philippe_Loys_de_Chéseaux
|
|
gptkbp:discoveredIn
|
1745
|
|
gptkbp:distanceFromEarth
|
5000 to 6000 light-years
|
|
gptkbp:hasRadioEmission
|
yes
|
|
gptkbp:hasViewOf
|
gptkb:Northern_Hemisphere
gptkb:Southern_Hemisphere
|
|
gptkbp:hasXRayEmission
|
yes
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Omega Nebula (M17)
|
|
gptkbp:infraredPort
|
yes
|
|
gptkbp:ionizedBy
|
ultraviolet radiation from young stars
|
|
gptkbp:locatedIn
|
gptkb:Milky_Way
gptkb:Sagittarius_Arm
|
|
gptkbp:mass
|
~800 solar masses
|
|
gptkbp:nestType
|
gptkb:planetary_nebula
|
|
gptkbp:notableFor
|
complex structure
active star formation
bright emission
|
|
gptkbp:otherName
|
gptkb:Messier_17
gptkb:Checkmark_Nebula
gptkb:Horseshoe_Nebula
gptkb:Lobster_Nebula
gptkb:Swan_Nebula
|
|
gptkbp:partOf
|
gptkb:Messier_catalog
gptkb:NGC_catalog
|
|
gptkbp:photographed
|
gptkb:Spitzer_Space_Telescope
gptkb:Chandra_X-ray_Observatory
gptkb:Hubble_Space_Telescope
|
|
gptkbp:region
|
gptkb:Galactic_plane
|
|
gptkbp:shape
|
resembles Greek letter Omega (Ω)
|
|
gptkbp:bfsParent
|
gptkb:Sagittarius_constellation
gptkb:constellation_Sagittarius
|
|
gptkbp:bfsLayer
|
6
|