Messier 1

URI: https://gptkb.org/entity/Messier_1
GPTKB entity
Statements (49)
Predicate Object
gptkbp:instanceOf supernova
gptkbp:alsoKnownAs gptkb:Crab_Nebula
gptkbp:angularSize 7 by 5 arcminutes
gptkbp:apparentMagnitude 8.4
gptkbp:cataloguedIn gptkb:Charles_Messier
gptkbp:catalogueNumber gptkb:M1
gptkbp:centralStarType gptkb:Crab_Pulsar
gptkbp:composition synchrotron radiation
ionized gas
filaments of hydrogen, helium, carbon, oxygen, nitrogen, iron, neon, sulfur
gptkbp:contains gptkb:Crab_Pulsar
gptkbp:coordinates RA 05h 34m 31.94s | Dec +22° 00′ 52.2″
gptkbp:diameter about 11 light-years
gptkbp:discoveredBy gptkb:John_Bevis
gptkbp:discoveredIn 1731
gptkbp:distanceFromEarth about 6,500 light-years
gptkbp:emits gptkb:X-rays
gptkb:gamma_rays
gptkb:radio_waves
visible light
gptkbp:expandingAt about 1,500 km/s
gptkbp:hasCentralObject white dwarf
gptkbp:hasGammaRayEmission yes
gptkbp:hasOpticalEmission yes
gptkbp:hasPulsarDesignation gptkb:PSR_B0531+21
gptkbp:hasPulsarPeriod about 33 milliseconds
gptkbp:hasRadioEmission yes
gptkbp:hasViewOf amateur telescopes
gptkbp:hasXrayEmission yes
gptkbp:historicalSignificance supernova observed in 1054 AD
https://www.w3.org/2000/01/rdf-schema#label Messier 1
gptkbp:infraredPort yes
gptkbp:isExpanding yes
gptkbp:isVisible northern hemisphere
gptkbp:locatedIn constellation Taurus
gptkbp:NGCNumber gptkb:NGC_1952
gptkbp:notableFor first object in Messier Catalogue
remnant of historical supernova
gptkbp:partOf gptkb:Messier_Catalogue
gptkbp:photo gptkb:Hubble_Space_Telescope
gptkbp:studiedBy gptkb:Very_Large_Array
gptkb:Spitzer_Space_Telescope
gptkb:Chandra_X-ray_Observatory
gptkbp:supernovaEventYear 1054
gptkbp:supernovaObservedBy gptkb:Chinese_astronomers
Arab astronomers
gptkbp:type plerion
gptkbp:bfsParent gptkb:Crab_Nebula
gptkbp:bfsLayer 6