|
gptkbp:instanceOf
|
gptkb:galaxy
|
|
gptkbp:alsoKnownAs
|
gptkb:Andromeda_Galaxy
|
|
gptkbp:angularSize
|
3.167° × 1°
|
|
gptkbp:apparentMagnitude
|
3.44
|
|
gptkbp:catalogueNumber
|
gptkb:NGC_224
gptkb:M31
|
|
gptkbp:collisionTimeEstimate
|
~4.5 billion years
|
|
gptkbp:contains
|
black hole
globular clusters
open clusters
dust lanes
planetary nebulae
|
|
gptkbp:declination
|
+41° 16′ 9″
|
|
gptkbp:diameter
|
220,000 light-years
|
|
gptkbp:discoveredBy
|
gptkb:Abd_al-Rahman_al-Sufi
|
|
gptkbp:discoveredIn
|
964 AD
|
|
gptkbp:distanceFromEarth
|
2.537 million light-years
|
|
gptkbp:expectedToCollideWith
|
gptkb:Milky_Way
|
|
gptkbp:firstPhotographedBy
|
gptkb:Isaac_Roberts
|
|
gptkbp:firstPhotographedYear
|
1887
|
|
gptkbp:galacticLatitude
|
l = 121.174°, b = -21.573°
|
|
gptkbp:hasCepheidVariables
|
yes
|
|
gptkbp:hasDustLanes
|
yes
|
|
gptkbp:hasPlanetaryNebulae
|
yes
|
|
gptkbp:hasRingStructures
|
yes
|
|
gptkbp:hasStarFormationRegions
|
yes
|
|
gptkbp:hasSupermassiveBlackHole
|
~140 million solar masses
|
|
gptkbp:hasSupernovaRemnants
|
yes
|
|
gptkbp:hasTidalStreams
|
yes
|
|
gptkbp:hasXRaySources
|
yes
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Messier 31
|
|
gptkbp:HubbleDiscovery
|
proved it is a separate galaxy from the Milky Way
|
|
gptkbp:locatedIn
|
gptkb:Andromeda_constellation
|
|
gptkbp:luminosity
|
13.5 mag/arcmin²
|
|
gptkbp:mass
|
1.5×10^12 solar masses
|
|
gptkbp:measures
|
extragalactic distances
|
|
gptkbp:namedAfter
|
gptkb:Andromeda_(mythology)
|
|
gptkbp:nearestMajorGalaxyTo
|
gptkb:Milky_Way
|
|
gptkbp:observedBy
|
gptkb:Edwin_Hubble
|
|
gptkbp:partOf
|
gptkb:Local_Group
|
|
gptkbp:radialVelocity
|
-301 km/s
|
|
gptkbp:rating
|
1 trillion
|
|
gptkbp:redshift
|
-0.001001
|
|
gptkbp:rightAscension
|
00h 42m 44.3s
|
|
gptkbp:satelliteGalaxies
|
gptkb:Messier_32
gptkb:NGC_221
gptkb:NGC_205
gptkb:Messier_110
|
|
gptkbp:type
|
gptkb:galaxy
SA(s)b
|
|
gptkbp:visibleToNakedEye
|
yes
|
|
gptkbp:bfsParent
|
gptkb:Andromeda_Galaxy
gptkb:Charles_Messier
gptkb:Andromeda_galaxy
|
|
gptkbp:bfsLayer
|
6
|