BL Lacertae
E1565471
UNEXPLORED
BL Lacertae is a prototype blazar and highly variable active galactic nucleus whose extreme brightness changes across the electromagnetic spectrum define an entire class of objects known as BL Lacertae-type blazars.
All labels observed (1)
| Label | Occurrences |
|---|---|
| BL Lacertae canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T23000119 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: BL Lacertae Context triple: [Lacerta, containsVariableStar, BL Lacertae]
-
A.
3C 273
3C 273 is a bright, nearby quasar in the constellation Virgo and one of the first quasars ever identified, making it a landmark object in extragalactic astronomy.
-
B.
Cygnus X-3
Cygnus X-3 is a powerful X-ray binary system in the constellation Cygnus, believed to consist of a compact object such as a black hole or neutron star orbiting a massive companion star and known for its intense X-ray and gamma-ray emissions.
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C.
Cygnus X-1
Cygnus X-1 is one of the strongest known X-ray sources in the sky and the first widely accepted stellar-mass black hole candidate, located in the constellation Cygnus.
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D.
Cygnus X-2
Cygnus X-2 is a bright low-mass X-ray binary system in the constellation Cygnus, consisting of a neutron star accreting matter from a companion star and serving as an important source for studying X-ray emission and compact objects.
-
E.
3C 274
3C 274 is a giant elliptical galaxy in the Virgo Cluster, famous for its supermassive black hole and prominent relativistic jet.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: BL Lacertae Target entity description: BL Lacertae is a prototype blazar and highly variable active galactic nucleus whose extreme brightness changes across the electromagnetic spectrum define an entire class of objects known as BL Lacertae-type blazars.
-
A.
3C 273
3C 273 is a bright, nearby quasar in the constellation Virgo and one of the first quasars ever identified, making it a landmark object in extragalactic astronomy.
-
B.
Cygnus X-3
Cygnus X-3 is a powerful X-ray binary system in the constellation Cygnus, believed to consist of a compact object such as a black hole or neutron star orbiting a massive companion star and known for its intense X-ray and gamma-ray emissions.
-
C.
Cygnus X-1
Cygnus X-1 is one of the strongest known X-ray sources in the sky and the first widely accepted stellar-mass black hole candidate, located in the constellation Cygnus.
-
D.
Cygnus X-2
Cygnus X-2 is a bright low-mass X-ray binary system in the constellation Cygnus, consisting of a neutron star accreting matter from a companion star and serving as an important source for studying X-ray emission and compact objects.
-
E.
3C 274
3C 274 is a giant elliptical galaxy in the Virgo Cluster, famous for its supermassive black hole and prominent relativistic jet.
- F. None of above. chosen
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.