|
gptkbp:instance_of
|
gptkb:galaxy
|
|
gptkbp:age
|
several billion years
|
|
gptkbp:apparent_magnitude
|
13.5
|
|
gptkbp:associated_with
|
gravitational wave event G W170817
|
|
gptkbp:body_style
|
gptkb:physicist
|
|
gptkbp:contains
|
gptkb:NGC_4993_A
gptkb:battle
numerous star clusters
many globular clusters
ongoing star formation
hundreds of billions
|
|
gptkbp:declination
|
-27° 25' 12"
|
|
gptkbp:diameter
|
approximately 50,000 light-years
|
|
gptkbp:discovered_by
|
gptkb:Heinrich_Louis_d'_Arrest
gptkb:John_Herschel
|
|
gptkbp:distance
|
approximately 40 million light-years
|
|
gptkbp:exhibition
|
gptkb:New_General_Catalogue
|
|
gptkbp:features
|
bar structure
|
|
gptkbp:formed
|
ongoing star formation
|
|
gptkbp:fuel_capacity
|
significant gas content
|
|
gptkbp:has_color
|
B-V = 0.7
|
|
gptkbp:has_community
|
gptkb:battle
|
|
gptkbp:has_feature
|
barred spiral galaxy
|
|
gptkbp:has_luminosity
|
gptkb:SN_2017gfo
|
|
gptkbp:has_spectral_type
|
SAB(rs)bc
Sbc
|
|
gptkbp:historical_significance
|
first observed gravitational wave source from a galaxy.
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
NGC 4993
|
|
gptkbp:is_observed_in
|
gptkb:Hubble_Space_Telescope
|
|
gptkbp:lighting
|
20.5 mag/arcsec²
|
|
gptkbp:located_in
|
gptkb:Hydra_constellation
|
|
gptkbp:mass
|
approximately 10^11 solar masses
|
|
gptkbp:metallicity
|
solar metallicity
|
|
gptkbp:mission
|
gptkb:battle
|
|
gptkbp:notable_feature
|
contains a supermassive black hole
|
|
gptkbp:redshift
|
0.0043
0.0098
|
|
gptkbp:relationship
|
gptkb:NGC_4993_A
|
|
gptkbp:right_ascension
|
13h 09m 36.0s
|
|
gptkbp:speed
|
approximately 100 km/s
|
|
gptkbp:type
|
gptkb:galaxy
|
|
gptkbp:year_created
|
1834
1864
|
|
gptkbp:bfsParent
|
gptkb:Virgo
gptkb:The_Coma_Cluster
gptkb:Virgo_Supercluster
|
|
gptkbp:bfsLayer
|
4
|