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gptkbp:instanceOf
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astronomer
|
|
gptkbp:alternativeName
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gptkb:Galactic_Nucleus
GC
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gptkbp:constellation
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gptkb:Sagittarius
gptkb:Scorpius
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gptkbp:contains
|
gptkb:radio_station
gptkb:Sagittarius_A*
infrared source
black hole
X-ray source
molecular clouds
dense star clusters
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gptkbp:declination
|
−29° 00′ 28.1″
|
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gptkbp:discoveredBy
|
gptkb:Harlow_Shapley
|
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gptkbp:discoveredIn
|
1918
|
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gptkbp:distanceFromEarth
|
~26,000 light-years
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Galactic Center
|
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gptkbp:locatedIn
|
gptkb:Milky_Way
|
|
gptkbp:mass
|
~4 million solar masses (Sagittarius A*)
|
|
gptkbp:notableEvent
|
star S2 close approach to Sagittarius A*
|
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gptkbp:notableFeature
|
high stellar density
strong gravitational field
|
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gptkbp:orbitType
|
stars (e.g., S2 star)
|
|
gptkbp:partOf
|
gptkb:Milky_Way_bulge
|
|
gptkbp:rightAscension
|
17h 45m 40.04s
|
|
gptkbp:studiedBy
|
X-ray astronomy
infrared astronomy
radio astronomy
|
|
gptkbp:visibleToNakedEye
|
not directly (obscured by dust)
|
|
gptkbp:bfsParent
|
gptkb:Sagittarius_constellation
gptkb:Center_of_the_Galaxy
gptkb:Galactic_Center_Saga
gptkb:Sagittarius_A
gptkb:Galactic_Core
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gptkbp:bfsLayer
|
6
|