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gptkbp:instanceOf
|
black hole
|
|
gptkbp:apparentMagnitude
|
not visible (radio source)
|
|
gptkbp:category
|
black hole
astronomical radio source
galactic center object
|
|
gptkbp:constellation
|
gptkb:Sagittarius
|
|
gptkbp:declination
|
−29° 00′ 28.118″
|
|
gptkbp:discoveredBy
|
gptkb:Bruce_Balick
gptkb:Robert_Brown
|
|
gptkbp:discoveredIn
|
1974
|
|
gptkbp:distanceFromEarth
|
about 26,000 light-years
|
|
gptkbp:eventHorizonDiameter
|
about 44 million km
|
|
gptkbp:evidence
|
existence of supermassive black holes
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Sgr A*
|
|
gptkbp:locatedIn
|
gptkb:Milky_Way
center of the Milky Way
|
|
gptkbp:mass
|
about 4 million solar masses
|
|
gptkbp:notableFor
|
first direct image of Milky Way's black hole (2022)
|
|
gptkbp:observedBy
|
gptkb:Event_Horizon_Telescope
|
|
gptkbp:otherDesignation
|
gptkb:Sagittarius_A*
|
|
gptkbp:partOf
|
gptkb:Sagittarius_A
|
|
gptkbp:photographed
|
gptkb:Event_Horizon_Telescope
|
|
gptkbp:rightAscension
|
17h 45m 40.0409s
|
|
gptkbp:studiedBy
|
gptkb:VLBI_(Very_Long_Baseline_Interferometry)
|
|
gptkbp:surroundedBy
|
stars
accretion disk
gas clouds
|
|
gptkbp:type
|
gptkb:radio_station
|
|
gptkbp:bfsParent
|
gptkb:Sagittarius_A*
|
|
gptkbp:bfsLayer
|
5
|