Deneb
E576472
Deneb is a luminous blue-white supergiant star in the constellation Cygnus and one of the brightest stars in the night sky, forming part of the Summer Triangle asterism.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Deneb canonical | 5 |
How this entity was disambiguated
This entity first appeared as the object of triple T6174858 — 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: Deneb Context triple: [Northern Celestial Hemisphere, contains, Deneb]
-
A.
Achernar
Achernar is a bright, rapidly rotating blue-white star and the ninth-brightest star in the night sky, marking the end of the constellation Eridanus.
-
B.
Canopus
Canopus was an ancient Egyptian coastal city near modern-day Alexandria, known as a major religious center and sanctuary dedicated to the goddess Isis.
-
C.
Deneb Algedi
Deneb Algedi is a luminous star in the constellation Capricornus, notable as its most prominent and easily identifiable stellar member.
-
D.
Zeta Canis Majoris
Zeta Canis Majoris, also known as Furud, is a bright B-type main-sequence star in the constellation Canis Major.
-
E.
Arneb
Arneb is a luminous white supergiant star in the constellation Lepus, notable for its high brightness and advanced evolutionary stage.
- 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: Deneb Target entity description: Deneb is a luminous blue-white supergiant star in the constellation Cygnus and one of the brightest stars in the night sky, forming part of the Summer Triangle asterism.
-
A.
Achernar
Achernar is a bright, rapidly rotating blue-white star and the ninth-brightest star in the night sky, marking the end of the constellation Eridanus.
-
B.
Canopus
Canopus was an ancient Egyptian coastal city near modern-day Alexandria, known as a major religious center and sanctuary dedicated to the goddess Isis.
-
C.
Deneb Algedi
Deneb Algedi is a luminous star in the constellation Capricornus, notable as its most prominent and easily identifiable stellar member.
-
D.
Zeta Canis Majoris
Zeta Canis Majoris, also known as Furud, is a bright B-type main-sequence star in the constellation Canis Major.
-
E.
Arneb
Arneb is a luminous white supergiant star in the constellation Lepus, notable for its high brightness and advanced evolutionary stage.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
blue-white supergiant star
ⓘ
luminous supergiant ⓘ star ⓘ |
| absoluteMagnitudeV | -8.4 ⓘ |
| age_millionYears | ~10 ⓘ |
| apparentMagnitudeV | 1.25 ⓘ |
| bayerDesignation | Alpha Cygni NERFINISHED ⓘ |
| catalogIdentifier |
BD+44 3541
NERFINISHED
ⓘ
HD 197345 NERFINISHED ⓘ HIP 102098 NERFINISHED ⓘ HR 7924 NERFINISHED ⓘ |
| color | blue-white ⓘ |
| constellation | Cygnus NERFINISHED ⓘ |
| declination | +45° 16′ 49″ ⓘ |
| distanceFromEarth_ly | ~2600 ⓘ |
| distanceFromEarth_pc | ~800 ⓘ |
| effectiveTemperature_K | ~8525 ⓘ |
| flamsteedDesignation | 50 Cygni NERFINISHED ⓘ |
| formsAsterismWith |
Altair
NERFINISHED
ⓘ
Vega NERFINISHED ⓘ |
| galacticPopulation | Population I NERFINISHED ⓘ |
| hasCompanionStar | no confirmed companion ⓘ |
| hasPhotometricBand |
B-V index ~0.09
ⓘ
U-B index ~-0.22 ⓘ |
| hemisphereVisibility | northern hemisphere ⓘ |
| isAmong | brightest stars in the night sky ⓘ |
| isNavigationStar | yes ⓘ |
| isPartOf |
Northern Cross
NERFINISHED
ⓘ
Summer Triangle NERFINISHED ⓘ |
| isPoleStarOf | none ⓘ |
| isReferencePointFor | Summer Triangle asterism NERFINISHED ⓘ |
| isSupergiant | true ⓘ |
| isVariableStar | true ⓘ |
| luminosity_solarLuminosities | ~200000 ⓘ |
| mass_solarMasses | ~19 ⓘ |
| nameEtymology | from Arabic "dhanab" meaning "tail" ⓘ |
| parallax_mas | ~1.01 ⓘ |
| properMotionDec_masPerYear | 1.85 ⓘ |
| properMotionRA_masPerYear | 1.99 ⓘ |
| radialVelocity_kmPerSecond | -4.5 ⓘ |
| radius_solarRadii | ~200 ⓘ |
| represents | tail of the swan in Cygnus ⓘ |
| rightAscension | 20h 41m 25.9s ⓘ |
| spectralType | A2Ia ⓘ |
| traditionalNameOrigin | Arabic ⓘ |
| variableType | Alpha Cygni variable ⓘ |
| visibleInSeason | northern summer ⓘ |
| willBecome | possible supernova in the far future ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Deneb Description of subject: Deneb is a luminous blue-white supergiant star in the constellation Cygnus and one of the brightest stars in the night sky, forming part of the Summer Triangle asterism.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Cygnus
subject surface form:
Cygnus