Beta Monocerotis
E555753
Beta Monocerotis is a bright multiple-star system in the constellation Monoceros, notable for its visually striking trio of closely spaced, luminous stars.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Beta Monocerotis canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5775501 — 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: Beta Monocerotis Context triple: [Monoceros, contains, Beta Monocerotis]
-
A.
S Monocerotis
S Monocerotis is a variable star system located in the constellation Monoceros, known for its brightness changes over time.
-
B.
Beta Persei
Beta Persei, better known as Algol, is a famous eclipsing binary star system whose periodic dimming made it one of the first variable stars recognized in the night sky.
-
C.
Beta Capricorni
Beta Capricorni is a bright multiple star system in the constellation Capricornus, visible to the naked eye and often used as a reference point in the southern sky.
-
D.
Beta Geminorum
Beta Geminorum, also known as Pollux, is the brightest star in the constellation Gemini and an orange giant located relatively close to Earth.
-
E.
Beta Tucanae
Beta Tucanae is a multiple star system in the southern constellation Tucana, visible to the naked eye and notable for its bright, closely spaced stellar components.
- 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: Beta Monocerotis Target entity description: Beta Monocerotis is a bright multiple-star system in the constellation Monoceros, notable for its visually striking trio of closely spaced, luminous stars.
-
A.
S Monocerotis
S Monocerotis is a variable star system located in the constellation Monoceros, known for its brightness changes over time.
-
B.
Beta Persei
Beta Persei, better known as Algol, is a famous eclipsing binary star system whose periodic dimming made it one of the first variable stars recognized in the night sky.
-
C.
Beta Capricorni
Beta Capricorni is a bright multiple star system in the constellation Capricornus, visible to the naked eye and often used as a reference point in the southern sky.
-
D.
Beta Geminorum
Beta Geminorum, also known as Pollux, is the brightest star in the constellation Gemini and an orange giant located relatively close to Earth.
-
E.
Beta Tucanae
Beta Tucanae is a multiple star system in the southern constellation Tucana, visible to the naked eye and notable for its bright, closely spaced stellar components.
- F. None of above. chosen
Statements (42)
| Predicate | Object |
|---|---|
| instanceOf | multiple star system ⓘ |
| apparentMagnitudeV |
4.60
ⓘ
5.40 ⓘ 5.60 ⓘ |
| bestSeenFrom | Northern Hemisphere NERFINISHED ⓘ |
| bestSeenInMonth | February ⓘ |
| colorIndexBminusV | −0.18 ⓘ |
| component |
Beta Monocerotis A
NERFINISHED
ⓘ
Beta Monocerotis B NERFINISHED ⓘ Beta Monocerotis C NERFINISHED ⓘ |
| constellation | Monoceros NERFINISHED ⓘ |
| declination | −07° 01′ 59″ ⓘ |
| discoverer | Giovanni Battista Hodierna NERFINISHED ⓘ |
| discoveryCentury | 17th century ⓘ |
| distanceFromEarth_ly | ~690 ⓘ |
| distanceFromEarth_pc | ~210 ⓘ |
| effectiveTemperature_K |
~17000
ⓘ
~18000 ⓘ |
| equatorialCoordinateEpoch | J2000 ⓘ |
| galacticPopulation | thin disk ⓘ |
| hasOpticalMultiplicity | true ⓘ |
| hemisphere | celestial equator region ⓘ |
| isNakedEyeVisible | true ⓘ |
| luminosity_solar |
~1600
ⓘ
~3200 ⓘ |
| mass_solar |
~6.0
ⓘ
~6.2 ⓘ ~7.1 ⓘ |
| notableFor |
closely spaced luminous components
ⓘ
visually striking triple star ⓘ |
| numberOfComponents | 3 ⓘ |
| otherName |
β Mon
NERFINISHED
ⓘ
β Monocerotis NERFINISHED ⓘ |
| parallax_mas | ~4.75 ⓘ |
| parallaxError_mas | ~0.16 ⓘ |
| properMotionDec_masPerYr | −0.7 ⓘ |
| properMotionRA_masPerYr | −3.9 ⓘ |
| radialVelocity_kmPerSec | ~+22 ⓘ |
| rightAscension | 06h 28m 49s ⓘ |
| spectralType |
B3V
ⓘ
B3Ve ⓘ |
| variableStarType | Be star system ⓘ |
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: Beta Monocerotis Description of subject: Beta Monocerotis is a bright multiple-star system in the constellation Monoceros, notable for its visually striking trio of closely spaced, luminous stars.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.