Dumbbell Nebula

GPTKB entity

Statements (58)
Predicate Object
gptkbp:instance_of gptkb:Nebula_Award
gptkbp:age around 8,000 years
about 8,000 years
gptkbp:apparent_magnitude 7.5
7.4
7.4 in visual band
gptkbp:associated_stars multiple stars in vicinity
gptkbp:associated_with star formation
gptkbp:body_shape dumbbell-shaped
gptkbp:color blue-green
gptkbp:common_name gptkb:Apple_Core_Nebula
gptkbp:composed_by hydrogen and helium
gptkbp:contains_star gptkb:Dwarves
gptkbp:coordinates RA 19h 59m 36s, Dec +22° 43′ 16″
gptkbp:discovered_by gptkb:Charles_Messier
gptkbp:discovery_year gptkb:1764
gptkbp:distance_from_earth 1,360 light years
gptkbp:distance_in_parsecs 417 parsecs
gptkbp:emissions_standard H-alpha
ionized gas
H-alpha and [ O III]
gptkbp:exhibition gptkb:Messier_Catalog
gptkb:Messier_27
New General Catalogue as NGC 6853
gptkbp:expansion_plans 20 km/s
gptkbp:expansion_rate 0.5 arcseconds per year
gptkbp:has_radius about 1.5 light years
gptkbp:has_spectral_type O-type star
gptkbp:historical_significance first planetary nebula discovered
https://www.w3.org/2000/01/rdf-schema#label Dumbbell Nebula
gptkbp:image Hubble Space Telescope image
gptkbp:is_observed_in gptkb:William_Herschel
gptkbp:is_popular_in amateur astronomy
gptkbp:is_visible_from best viewed in summer months
gptkbp:light_spectrum broad emission spectrum
gptkbp:lighting visible from urban areas
gptkbp:location constellation Vulpecula
gptkbp:notable_feature bipolar outflow
gptkbp:notable_features bright outer shell
faint inner region
gptkbp:notable_for visible in binoculars
its symmetrical shape
gptkbp:observational_equipment gptkb:astronomy
gptkbp:photography popular target for astrophotography
long exposure required for detail
gptkbp:research amateur telescopes
observed since the 18th century
studied for stellar evolution
gptkbp:research_focus planetary nebulae characteristics
gptkbp:research_importance helps understand stellar life cycles
gptkbp:size about 2.5 arcminutes across
gptkbp:storage photometric measurements available
gptkbp:surrounding_area gptkb:Milky_Way_Galaxy
gptkbp:type gptkb:Nebula_Award
gptkbp:bfsParent gptkb:Ring_Nebula
gptkb:Messier_27
gptkb:M27
gptkbp:bfsLayer 6