Alpha Monocerotis
E558281
Alpha Monocerotis is a relatively bright giant star located in the constellation Monoceros, visible to the naked eye under good conditions.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Alpha Monocerotis canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5775502 — 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: Alpha Monocerotis Context triple: [Monoceros, contains, Alpha Monocerotis]
-
A.
Beta Monocerotis
Beta Monocerotis is a bright multiple-star system in the constellation Monoceros, notable for its visually striking trio of closely spaced, luminous stars.
-
B.
S Monocerotis
S Monocerotis is a variable star system located in the constellation Monoceros, known for its brightness changes over time.
-
C.
Alpha Telescopii
Alpha Telescopii is a blue-white giant star that serves as the primary luminary of the southern constellation Telescopium.
-
D.
Alpha Ophiuchi
Alpha Ophiuchi, traditionally known as Rasalhague, is the brightest star in the constellation Ophiuchus and a rapidly rotating A-type subgiant located relatively close to Earth.
-
E.
Alpha Geminorum
Alpha Geminorum, also known as Castor, is one of the brightest stars in the constellation Gemini and is actually a complex multiple-star system.
- 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: Alpha Monocerotis Target entity description: Alpha Monocerotis is a relatively bright giant star located in the constellation Monoceros, visible to the naked eye under good conditions.
-
A.
Beta Monocerotis
Beta Monocerotis is a bright multiple-star system in the constellation Monoceros, notable for its visually striking trio of closely spaced, luminous stars.
-
B.
S Monocerotis
S Monocerotis is a variable star system located in the constellation Monoceros, known for its brightness changes over time.
-
C.
Alpha Telescopii
Alpha Telescopii is a blue-white giant star that serves as the primary luminary of the southern constellation Telescopium.
-
D.
Alpha Ophiuchi
Alpha Ophiuchi, traditionally known as Rasalhague, is the brightest star in the constellation Ophiuchus and a rapidly rotating A-type subgiant located relatively close to Earth.
-
E.
Alpha Geminorum
Alpha Geminorum, also known as Castor, is one of the brightest stars in the constellation Gemini and is actually a complex multiple-star system.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf | star ⓘ |
| absoluteMagnitudeV | −0.39 ⓘ |
| age | about 1 billion years (approximate) ⓘ |
| apparentMagnitudeV | 4.39 ⓘ |
| bayerDesignation | α Monocerotis NERFINISHED ⓘ |
| catalog |
Henry Draper Catalogue
NERFINISHED
ⓘ
Hipparcos NERFINISHED ⓘ Tycho NERFINISHED ⓘ |
| colorIndexB−V | +1.01 ⓘ |
| constellation | Monoceros NERFINISHED ⓘ |
| constellationArea | Monoceros NERFINISHED ⓘ |
| coreFusionType | helium-core burning ⓘ |
| declination | −09° 33′ 04″ ⓘ |
| discovery | known since antiquity as a naked-eye star ⓘ |
| distanceFromEarth |
about 294 light-years
ⓘ
about 90 parsecs ⓘ |
| effectiveTemperature | about 4,800 K ⓘ |
| epoch | J2000.0 ⓘ |
| equatorialCoordinateSystem | ICRS NERFINISHED ⓘ |
| evolutionaryStage | red clump giant ⓘ |
| flamsteedDesignation | 17 Monocerotis NERFINISHED ⓘ |
| galacticLatitude | +0.5° (approximate) ⓘ |
| galacticLongitude | 225.5° (approximate) ⓘ |
| galacticPopulation | thin disk ⓘ |
| hemisphere | celestial equator region ⓘ |
| henryDraperNumber | HD 61935 NERFINISHED ⓘ |
| hipparcosNumber | HIP 37265 NERFINISHED ⓘ |
| HRNumber | HR 2963 NERFINISHED ⓘ |
| luminosity | about 60 times solar luminosity ⓘ |
| mass | about 2.3 solar masses ⓘ |
| metallicity[Fe/H] | approximately solar ⓘ |
| multiplicity | single star (no known companions) ⓘ |
| parallax | 11.09 mas ⓘ |
| parallaxError | 0.18 mas ⓘ |
| properMotionDec | −10.77 mas/yr ⓘ |
| properMotionRA | −34.40 mas/yr ⓘ |
| radialVelocity | +26 km/s ⓘ |
| radius | about 11 solar radii ⓘ |
| rightAscension | 07h 41m 14.8s ⓘ |
| rotation | slow rotator ⓘ |
| SIMBADIdentifier | alf Mon NERFINISHED ⓘ |
| spectralClass | K0III ⓘ |
| surfaceGravityLogg | about 2.7 ⓘ |
| variableStarStatus | not known to be variable ⓘ |
| visibility | visible to the naked eye under good conditions ⓘ |
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: Alpha Monocerotis Description of subject: Alpha Monocerotis is a relatively bright giant star located in the constellation Monoceros, visible to the naked eye under good conditions.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.