M81

GPTKB entity

Statements (157)
Predicate Object
gptkbp:instance_of gptkb:galaxy
gptkb:spiral_galaxy
gptkbp:apparent_magnitude 6.9
gptkbp:best_time_to_visit spring months
gptkbp:body_shape gptkb:active_galactic_nucleus
gptkbp:contains gptkb:supermassive_black_hole
young stars
old stars
gptkbp:contains_star gptkb:M82
gptkb:NGC_3077
gptkb:NGC_2976
active star formation regions
about 2 solar masses per year
2.5 solar masses per year
gptkbp:diameter 90,000 light-years
approximately 90,000 light-years
90,000 light years
gptkbp:discovered_by gptkb:Johann_Elert_Bode
gptkbp:discovery_year 1774
gptkbp:distance_from_earth 12 million light-years
approximately 12 million light-years
12 million light years
gptkbp:exhibition gptkb:Messier_catalog
gptkbp:has_a_central_bulge yes
gptkbp:has_a_halo yes
gptkbp:has_a_morphological_type SA(s)bc
gptkbp:has_a_satellite_galaxy gptkb:M82
gptkbp:has_a_star_formation_rate approximately 2.5 solar masses per year
gptkbp:has_a_surface_brightness approximately 22.5 mag/arcsec²
gptkbp:has_been_mapped_in 3 D space.
gptkbp:has_color B-V = 0.9
U-B = -0.2
B-V: 0.9
gptkbp:has_companion gptkb:M82
gptkbp:has_historical_significance one of the first galaxies discovered
gptkbp:has_relationship_with gptkb:M82
gptkb:NGC_3077
gptkbp:has_single globular clusters.
gptkbp:has_spectral_type SAB(rs)bc
Sbc
gptkbp:has_supernova at its center
SN 1993 J
M81*
https://www.w3.org/2000/01/rdf-schema#label M81
gptkbp:included NGC catalog
IC catalog
gptkbp:interacts_with gptkb:M82
gptkbp:is_a_key_object_in_studies_of dark matter.
gptkbp:is_a_member_of the Local Supercluster
gptkbp:is_a_prominent_feature_in_studies_of the local universe.
gptkbp:is_a_significant_object_in_studies_of galactic dynamics.
galaxy formation.
gptkbp:is_a_source_of cosmic rays.
gptkbp:is_a_subject_of gptkb:cosmology
astrophysics.
gptkbp:is_a_subject_of_interest_in_studies_of stellar populations.
galaxy interactions.
galaxy morphology.
gptkbp:is_approximately 12 million light-years away from Earth.
gptkbp:is_associated_with gptkb:the_Great_Bear_constellation
Hubble Space Telescope observations
various astronomical phenomena.
gptkbp:is_cited_in galactic structure.
gptkbp:is_home_to many globular clusters
various types of nebulae
young star clusters
old stellar populations
gptkbp:is_known_for its bright core
its bright nucleus
its interaction with M82
its prominent spiral structure
gptkbp:is_known_to active star formation.
gptkbp:is_located_at Declination +69° 3' 55''
Right Ascension 9h 55m 33.1s
gptkbp:is_located_in Ursa Major constellation
gptkbp:is_observed_in gptkb:Hubble_Space_Telescope
various wavelengths
X-ray wavelengths
radio wavelengths
infrared wavelengths
gptkbp:is_often_compared_to the Milky Way.
gptkbp:is_often_discussed_in galaxy clusters.
gptkbp:is_often_included_in_studies_of galaxy evolution.
galaxy morphology.
gptkbp:is_often_referenced_in other galaxies.
gptkbp:is_often_referenced_in_studies_of galaxy evolution.
gptkbp:is_often_used_in_simulations_of galaxy formation.
gptkbp:is_part_of gptkb:Laniakea_Supercluster
gptkb:M81_Group
gptkb:M81_group_of_galaxies
gptkb:Messier_catalog
gptkb:Local_Group_of_galaxies
the Virgo Supercluster
the Local Supercluster
the Messier 81 Group
Hubble Space Telescope Legacy Archive.
gptkbp:is_part_of_a_group_that_includes gptkb:M82
gptkbp:is_part_of_a_larger_structure_known_as the M81 Group.
gptkbp:is_prominent_in a bar structure
gptkbp:is_studied_for galaxy formation
galaxy formation and evolution
galaxy evolution
its active galactic nucleus
gptkbp:is_studied_in gptkb:M82
gptkb:Hubble_Space_Telescope
gptkb:astronomy
galactic dynamics.
gptkbp:is_visible_from yes
northern hemisphere
naked eye under dark skies
with small telescopes
Earth with binoculars
gptkbp:known_as gptkb:Bode's_Galaxy
gptkbp:lighting 21.5 mag/arcsec²
gptkbp:located_in gptkb:Ursa_Major
Ursa Major constellation
gptkbp:mass 1.5 x 10^11 solar masses
approximately 100 billion solar masses
about 100 billion solar masses
gptkbp:notable_examples a nearby galaxy.
gptkbp:notable_feature star formation regions
spiral arms
bar structure
prominent spiral arms
the night sky.
bright nucleus
well-defined spiral arms
gptkbp:notable_figures interstellar dust
H II regions.
gptkbp:notable_galaxies gptkb:NGC_3031
gptkb:NGC_3077
gptkb:NGC_2976
SA(s)bc
SBbc
gptkbp:notable_nominees future astronomical observations.
gptkbp:often_includes astronomical catalogs.
gptkbp:orbit_type gptkb:M82
gptkb:NGC_3077
gptkb:NGC_2976
gptkbp:part_of gptkb:M81_Group
gptkbp:performance other spiral galaxies.
gptkbp:photography amateur astronomers
amateur astronomers.
gptkbp:redshift 0.0005
0.0023
0.0033
0.0007
gptkbp:research_focus galaxy interactions.
gptkbp:scientific_classification SA(s)bc
a spiral galaxy
gptkbp:speed approximately 200 km/s.
gptkbp:targets galaxy formation studies
deep-sky observations.
gptkbp:type gptkb:SAB_spiral_galaxy
gptkb:spiral_galaxy
gptkbp:bfsParent gptkb:Draco
gptkbp:bfsLayer 4