|
gptkbp:instance_of
|
gptkb:galaxy
|
|
gptkbp:apparent_magnitude
|
6.9
|
|
gptkbp:body_shape
|
gptkb:active_galactic_nucleus
|
|
gptkbp:contains_star
|
gptkb:NGC_3034
approximately 1.5 solar masses per year
|
|
gptkbp:diameter
|
approximately 90,000 light-years
|
|
gptkbp:discovered_by
|
gptkb:Johann_Elert_Bode
|
|
gptkbp:discovery_year
|
1774
|
|
gptkbp:distance_from_earth
|
approximately 12 million light-years
|
|
gptkbp:exhibition
|
gptkb:New_General_Catalogue
gptkb:Messier_Catalogue
|
|
gptkbp:foot
|
well-defined spiral arms
|
|
gptkbp:has_color
|
B-V = 0.9
|
|
gptkbp:has_historical_significance
|
one of the first galaxies to be studied in detail
|
|
gptkbp:has_spectral_type
|
Sbc
|
|
gptkbp:has_supernova
|
SN 1993 J
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
NGC 3031
|
|
gptkbp:included
|
various astronomical surveys
|
|
gptkbp:is_associated_with
|
X-ray emissions
starburst activity.
|
|
gptkbp:is_located_at
|
Right Ascension 9h 55m 33.2s
Declination +69° 3' 55''
|
|
gptkbp:is_notable_for
|
its bright nucleus
|
|
gptkbp:is_observed_in
|
radio wavelengths
ground-based telescopes
|
|
gptkbp:is_part_of
|
gptkb:M81_Group
gptkb:Hubble's_Tuning_Fork_diagram
gptkb:M81_constellation_group
gptkb:Local_Group_of_galaxies
|
|
gptkbp:is_studied_for
|
galaxy formation and evolution
|
|
gptkbp:is_studied_in
|
gptkb:astronomy
|
|
gptkbp:is_used_for
|
a reference point for other galaxies
|
|
gptkbp:is_visible_from
|
northern hemisphere
with small telescopes
|
|
gptkbp:known_as
|
gptkb:Messier_81
|
|
gptkbp:lighting
|
approximately 22.5 mag/arcsec²
|
|
gptkbp:located_in
|
constellation Ursa Major
|
|
gptkbp:mass
|
approximately 1.5 billion solar masses
|
|
gptkbp:notable_feature
|
large central bulge
|
|
gptkbp:notable_galaxies
|
SA(s)ab
|
|
gptkbp:photography
|
gptkb:Hubble_Space_Telescope
|
|
gptkbp:redshift
|
0.0005
|
|
gptkbp:type
|
gptkb:spiral_galaxy
|
|
gptkbp:bfsParent
|
gptkb:M81
|
|
gptkbp:bfsLayer
|
5
|