Statements (28)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:Markarian_galaxy
gptkb:active_galactic_nucleus gptkb:blazar |
| 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
|
| 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 |
7
|
| https://www.w3.org/2000/01/rdf-schema#label |
Markarian 421
|