Statements (28)
Predicate | Object |
---|---|
gptkbp:instanceOf |
gptkb:blazar
active galactic nucleus Markarian galaxy |
gptkbp:apparentMagnitude |
13.3
|
gptkbp:catalogue |
gptkb:PGC_catalogue
gptkb:Roma-BZCAT Markarian catalogue UGC catalogue |
gptkbp:declination |
+38° 12′ 32″
|
gptkbp:discoveredBy |
gptkb:Benjamin_Markarian
|
gptkbp:discoveredIn |
1971
|
gptkbp:distanceFromEarth |
397 million light-years
|
gptkbp:hostedBy |
gptkb:galaxy
|
https://www.w3.org/2000/01/rdf-schema#label |
Markarian 421
|
gptkbp:isGammaRaySource |
true
|
gptkbp:isRadioSource |
true
|
gptkbp:isXRaySource |
true
|
gptkbp:locatedIn |
constellation Ursa Major
|
gptkbp:notableFor |
first extragalactic source detected at TeV gamma-ray energies
|
gptkbp:otherName |
BZG J1104+3812
Mrk 421 PGC 37389 UGC 6132 |
gptkbp:redshift |
0.0308
|
gptkbp:rightAscension |
11h 04m 27.3s
|
gptkbp:spectralType |
gptkb:BL_Lacertae_object
|
gptkbp:bfsParent |
gptkb:Blazar
|
gptkbp:bfsLayer |
6
|