Crab Nebula

GPTKB entity

Statements (59)
Predicate Object
gptkbp:instanceOf gptkb:Titan
supernova
gptkbp:age about 970 years
gptkbp:angularSize 7 by 5 arcminutes
gptkbp:apparentMagnitude 8.4
gptkbp:catalogueNumber gptkb:Messier_1
gptkb:NGC_1952
gptkbp:centralTo gptkb:Crab_Pulsar
gptkbp:composition gptkb:helium
gptkb:neon
gptkb:sulfur
carbon
nitrogen
oxygen
ionized hydrogen
gptkbp:contains gptkb:Crab_Pulsar
gptkbp:coordinates Dec +22° 00′ 52.2″
RA 05h 34m 31.94s
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:hasChineseName gptkb:Tianguan
gptkbp:hasViewOf gptkb:Northern_Hemisphere
optical wavelengths
X-ray wavelengths
gamma-ray wavelengths
infrared wavelengths
ultraviolet wavelengths
https://www.w3.org/2000/01/rdf-schema#label Crab Nebula
gptkbp:JapaneseName gptkb:Guest_Star_of_1054
gptkbp:locatedIn constellation Taurus
gptkbp:mass about 4.6 solar masses
gptkbp:notableFor synchrotron radiation
filamentary structure
first object in Messier catalogue
historical supernova remnant
pulsar wind nebula
rapid expansion
source of cosmic rays
first astronomical object identified with a historical supernova explosion
gptkbp:observedBy gptkb:Charles_Messier
1758
gptkbp:originatedIn gptkb:supernova_SN_1054
gptkbp:shape irregular
gptkbp:studiedBy gptkb:Very_Large_Array
gptkb:Chandra_X-ray_Observatory
gptkb:Hubble_Space_Telescope
gptkb:Fermi_Gamma-ray_Space_Telescope
gptkbp:supernovaDate 1054 CE
gptkbp:usedFor standard candle in astronomy
gptkbp:visibleBestIn January
gptkbp:bfsParent gptkb:Titan
gptkb:Taurus_constellation
gptkbp:bfsLayer 5