|
gptkbp:instance_of
|
gptkb:galaxy
|
|
gptkbp:apparent_magnitude
|
approximately 10.3
approximately 10.2
|
|
gptkbp:declination
|
+55° 40′ 00″
+55° 40' 00''
|
|
gptkbp:diameter
|
approximately 100,000 light-years
|
|
gptkbp:discovered_by
|
gptkb:Pierre_Méchain
|
|
gptkbp:discovery_year
|
1781
|
|
gptkbp:distance_from_earth
|
approximately 45 million light-years
|
|
gptkbp:exhibition
|
gptkb:Messier_catalogue
|
|
gptkbp:features
|
gptkb:supernova_remnants
H II regions
dust lanes
|
|
gptkbp:has_supernova
|
gptkb:SN_2001ig
gptkb:SN_2014_C
gptkb:SN_2011dh
gptkb:SN_1991_T
gptkb:SN_2007gr
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Messier 108
|
|
gptkbp:is_observed_in
|
gptkb:Hubble_Space_Telescope
|
|
gptkbp:known_as
|
gptkb:NGC_3556
|
|
gptkbp:located_in
|
constellation Ursa Major
|
|
gptkbp:members
|
gptkb:Ursa_Major_II_group
|
|
gptkbp:notable_galaxies
|
Sb
|
|
gptkbp:previous_name
|
gptkb:NGC_3556
|
|
gptkbp:right_ascension
|
10h 47m 57.0s
10h 48m 42.0s
|
|
gptkbp:speed
|
approximately 1,000 km/s
|
|
gptkbp:type
|
gptkb:spiral_galaxy
barred spiral galaxy
|
|
gptkbp:bfsParent
|
gptkb:Messier_catalog
|
|
gptkbp:bfsLayer
|
5
|