|
gptkbp:instance_of
|
gptkb:galaxy
|
|
gptkbp:apparent_magnitude
|
9.4
|
|
gptkbp:body_shape
|
yes
active nucleus
|
|
gptkbp:companion_galaxy
|
gptkb:NGC_4322
|
|
gptkbp:contains_star
|
gptkb:NGC_4322
yes
billions
NGC 4319
|
|
gptkbp:coordinates
|
RA 12h 22m 54.0s, Dec +15° 49′ 00″
|
|
gptkbp:diameter
|
approximately 130,000 light-years
|
|
gptkbp:discovered_by
|
gptkb:Pierre_Méchain
|
|
gptkbp:discovery_year
|
1781
March 15, 1781
|
|
gptkbp:distance_from_earth
|
approximately 45 million light-years
|
|
gptkbp:emergency_services
|
yes
|
|
gptkbp:exhibition
|
gptkb:Messier_catalog
|
|
gptkbp:features
|
prominent dust lanes
|
|
gptkbp:first_appearance
|
1781
|
|
gptkbp:foot
|
yes
|
|
gptkbp:has_barred_structure
|
gptkb:true
|
|
gptkbp:has_color
|
B-V = 0.9
|
|
gptkbp:has_features
|
gptkb:spiral_galaxy
|
|
gptkbp:has_luminosity
|
approximately 1.5 times that of the Milky Way
|
|
gptkbp:has_supernova
|
gptkb:SN_1998bu
gptkb:SN_1991_T
SN 2006gy
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Messier 100
|
|
gptkbp:included
|
astronomical catalogs
|
|
gptkbp:is_located_at
|
RA 12h 22m 54s, Dec +15° 49′ 0″
|
|
gptkbp:is_observed_in
|
gptkb:Chandra_X-ray_Observatory
gptkb:Hubble_Space_Telescope
|
|
gptkbp:is_part_of
|
gptkb:Virgo_Cluster
large-scale structure of the universe
local supercluster
Messier 100 group
|
|
gptkbp:is_studied_for
|
dark matter research
|
|
gptkbp:is_studied_in
|
gptkb:cosmology
galaxy formation research
|
|
gptkbp:is_visible_from
|
yes
northern hemisphere
|
|
gptkbp:known_as
|
gptkb:NGC_4321
|
|
gptkbp:lighting
|
20.5 mag/arcsec²
|
|
gptkbp:located_in
|
gptkb:Virgo_constellation
|
|
gptkbp:mass
|
approximately 100 billion solar masses
|
|
gptkbp:members
|
Virgo III group
|
|
gptkbp:notable_galaxies
|
SAB(rs)bc
|
|
gptkbp:orbit_type
|
yes
|
|
gptkbp:photography
|
deep-sky photography
|
|
gptkbp:redshift
|
0.0047
0.0092
|
|
gptkbp:research
|
gptkb:Hubble_Space_Telescope
|
|
gptkbp:scope
|
gptkb:NGC_4321
|
|
gptkbp:signage
|
two main spiral arms
|
|
gptkbp:type
|
gptkb:spiral_galaxy
|
|
gptkbp:bfsParent
|
gptkb:Antlia
gptkb:Messier_catalog
|
|
gptkbp:bfsLayer
|
5
|