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gptkbp:instanceOf
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gptkb:astronomer
|
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gptkbp:alternativeName
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gptkb:Galactic_Nucleus
GC
|
|
gptkbp:constellation
|
gptkb:Sagittarius
gptkb:Scorpius
|
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gptkbp:contains
|
gptkb:infrared_source
gptkb:radio_station
gptkb:X-ray_source
gptkb:black_hole
gptkb:Sagittarius_A*
molecular clouds
dense star clusters
|
|
gptkbp:declination
|
−29° 00′ 28.1″
|
|
gptkbp:discoveredBy
|
gptkb:Harlow_Shapley
|
|
gptkbp:discoveredIn
|
1918
|
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gptkbp:distanceFromEarth
|
~26,000 light-years
|
|
gptkbp:locatedIn
|
gptkb:Milky_Way
|
|
gptkbp:mass
|
~4 million solar masses (Sagittarius A*)
|
|
gptkbp:notableEvent
|
star S2 close approach to Sagittarius A*
|
|
gptkbp:notableFeature
|
high stellar density
strong gravitational field
|
|
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:Galactic_Center_Saga
|
|
gptkbp:bfsLayer
|
6
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Galactic Center
|