Statements (105)
| Predicate | Object |
|---|---|
| gptkbp:instance_of |
gptkb:galaxy
|
| gptkbp:apparent_magnitude |
6.9
|
| gptkbp:contains |
gptkb:supermassive_black_hole
|
| gptkbp:contains_star |
gptkb:Messier_82
gptkb:NGC_3077 gptkb:NGC_2976 globular clusters open clusters in its spiral arms |
| gptkbp:diameter |
approximately 90,000 light-years
90,000 light years |
| gptkbp:discovered_by |
gptkb:Pierre_Méchain
gptkb:Johann_Elert_Bode |
| gptkbp:discovery_year |
1774
|
| gptkbp:distance_from_earth |
approximately 12 million light-years
12 million light years |
| gptkbp:exhibition |
gptkb:New_General_Catalogue
gptkb:Messier_catalog |
| gptkbp:features |
star formation regions
HII regions dust lanes |
| gptkbp:has_companion |
gptkb:Messier_82
gptkb:NGC_3077 gptkb:NGC_2976 |
| gptkbp:has_nuclear_region |
with active star formation
|
| gptkbp:has_relationship_with |
gptkb:Messier_82
gptkb:NGC_3077 |
| gptkbp:has_spectral_type |
SAB(rs)bc
Sbc |
| gptkbp:has_supernova |
at its center
|
| https://www.w3.org/2000/01/rdf-schema#label |
Messier 81
|
| gptkbp:included |
Hubble Space Telescope observations
|
| gptkbp:is_associated_with |
gptkb:dark_matter
|
| gptkbp:is_located_at |
Right Ascension 9h 55m 33.2s
Declination +69° 3' 55'' |
| gptkbp:is_located_near |
gptkb:Messier_82
gptkb:NGC_3077 gptkb:NGC_2976 |
| gptkbp:is_notable_for |
its size
its brightness its structure its star formation activity its interaction with Messier 82 |
| gptkbp:is_noted_for |
its large size
its historical significance in astronomy its proximity to Earth its bright nucleus its prominent spiral structure its role in studies of cosmic structure its role in studies of dark matter its role in studies of galaxy collisions its role in studies of galaxy formation |
| gptkbp:is_observed_in |
gptkb:Hubble_Space_Telescope
optical wavelengths X-ray wavelengths radio wavelengths infrared wavelengths |
| gptkbp:is_part_of |
gptkb:M81_Group
gptkb:Hubble_Heritage_Project gptkb:Hubble_Space_Telescope_Legacy_Archive gptkb:Local_Group gptkb:Messier_Marathon gptkb:M81_constellation_group gptkb:M81_Group_of_galaxies Hubble Space Telescope observations the Messier catalog the Virgo Supercluster the Local Supercluster M81 constellation deep-sky observations Deep Sky Objects the M81 Group of galaxies Messier Objects |
| gptkbp:is_popular_in |
amateur astronomy
|
| gptkbp:is_studied_for |
gptkb:dark_matter
supernovae galaxy formation stellar populations galaxy evolution its gravitational interactions |
| gptkbp:is_studied_in |
gptkb:astronomy
|
| gptkbp:is_used_in |
studies of galaxy evolution
|
| gptkbp:is_visible_from |
gptkb:Northern_Hemisphere
gptkb:Earth northern hemisphere with small telescopes |
| gptkbp:known_as |
gptkb:NGC_3031
gptkb:Bode's_Galaxy |
| gptkbp:lighting |
21.5 mag/arcsec²
22.5 mag/arcsec² |
| gptkbp:located_in |
constellation Ursa Major
|
| gptkbp:mass |
approximately 100 billion solar masses
approximately 70 million solar masses |
| gptkbp:notable_feature |
bright nucleus
well-defined spiral arms |
| gptkbp:notable_galaxies |
SA(s)bc
|
| gptkbp:part_of |
gptkb:M81_Group
|
| gptkbp:photography |
gptkb:astronomy
deep-sky astrophotography |
| gptkbp:redshift |
0.0023
0.0033 0.0034 |
| gptkbp:type |
gptkb:spiral_galaxy
|
| gptkbp:bfsParent |
gptkb:Ursa_Major
|
| gptkbp:bfsLayer |
5
|