|
gptkbp:instanceOf
|
gptkb:planetary_nebula
|
|
gptkbp:age
|
~600 years
|
|
gptkbp:angularSize
|
16″ × 13″
|
|
gptkbp:apparentMagnitude
|
8.5
|
|
gptkbp:catalogue
|
gptkb:New_General_Catalogue
|
|
gptkbp:centralStarLuminosity
|
~7,700 L☉
|
|
gptkbp:centralStarTemperature
|
~200,000 K
|
|
gptkbp:centralStarType
|
gptkb:white_dwarf
|
|
gptkbp:contains
|
dust
ionized gas
molecular hydrogen
|
|
gptkbp:declination
|
+42° 14′ 10″
|
|
gptkbp:discoveredBy
|
gptkb:Édouard_Stephan
|
|
gptkbp:discoveredIn
|
1878
|
|
gptkbp:distanceFromEarth
|
about 3,000 light-years
|
|
gptkbp:expansion
|
~17 km/s
|
|
gptkbp:hasOpticalEmission
|
yes
|
|
gptkbp:hasRadioEmission
|
yes
|
|
gptkbp:hasUnit
|
light-year
|
|
gptkbp:infraredPort
|
yes
|
|
gptkbp:locatedIn
|
gptkb:constellation_Cygnus
|
|
gptkbp:nestType
|
compact planetary nebula
|
|
gptkbp:notableFor
|
extensive study in infrared and radio wavelengths
one of the brightest planetary nebulae in the sky
|
|
gptkbp:otherDesignation
|
gptkb:IRAS_21045+4215
gptkb:PK_84+12.1
|
|
gptkbp:rightAscension
|
21h 07m 01.6s
|
|
gptkbp:shape
|
rectangular or elliptical
|
|
gptkbp:studiedBy
|
gptkb:Spitzer_Space_Telescope
gptkb:Chandra_X-ray_Observatory
gptkb:Hubble_Space_Telescope
|
|
gptkbp:bfsParent
|
gptkb:Cygnus_constellation
gptkb:Hubble_Heritage_Images
|
|
gptkbp:bfsLayer
|
7
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
NGC 7027
|