S Monocerotis
E554485
S Monocerotis is a variable star system located in the constellation Monoceros, known for its brightness changes over time.
All labels observed (1)
| Label | Occurrences |
|---|---|
| S Monocerotis canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5775498 — 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: S Monocerotis Context triple: [Monoceros, contains, S Monocerotis]
-
A.
Tau Canis Majoris
Tau Canis Majoris is a very luminous, massive blue-white multiple star system located in the constellation Canis Major and is one of the brightest members of the open cluster NGC 2362.
-
B.
Eta Canis Majoris
Eta Canis Majoris, also known as Aludra, is a luminous blue supergiant star in the constellation Canis Major and one of its brightest members.
-
C.
Epsilon Canis Majoris
Epsilon Canis Majoris, also known as Adhara, is a bright blue-white giant star and one of the most luminous stars visible from Earth, located in the constellation Canis Major.
-
D.
Zeta Tucanae
Zeta Tucanae is a main-sequence F-type star located in the southern constellation Tucana, visible to the naked eye from dark-sky locations.
-
E.
Rho Tucanae
Rho Tucanae is a star located in the southern constellation Tucana.
- 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: S Monocerotis Target entity description: S Monocerotis is a variable star system located in the constellation Monoceros, known for its brightness changes over time.
-
A.
Tau Canis Majoris
Tau Canis Majoris is a very luminous, massive blue-white multiple star system located in the constellation Canis Major and is one of the brightest members of the open cluster NGC 2362.
-
B.
Eta Canis Majoris
Eta Canis Majoris, also known as Aludra, is a luminous blue supergiant star in the constellation Canis Major and one of its brightest members.
-
C.
Epsilon Canis Majoris
Epsilon Canis Majoris, also known as Adhara, is a bright blue-white giant star and one of the most luminous stars visible from Earth, located in the constellation Canis Major.
-
D.
Zeta Tucanae
Zeta Tucanae is a main-sequence F-type star located in the southern constellation Tucana, visible to the naked eye from dark-sky locations.
-
E.
Rho Tucanae
Rho Tucanae is a star located in the southern constellation Tucana.
- F. None of above. chosen
Statements (39)
| Predicate | Object |
|---|---|
| instanceOf |
stellar system
ⓘ
variable star system ⓘ |
| hasAlternativeName |
BD−02 1609
NERFINISHED
ⓘ
GCVS S Mon NERFINISHED ⓘ HD 49331 NERFINISHED ⓘ HIP 32617 NERFINISHED ⓘ HR 2505 NERFINISHED ⓘ SAO 132020 NERFINISHED ⓘ |
| hasAngularSeparationFromOrion | near the border with Orion ⓘ |
| hasApparentMagnitudeV | approximately 4.0 to 4.7 ⓘ |
| hasBrightnessVariation | changes brightness over time ⓘ |
| hasColorIndexBMinusV | approximately +1.6 ⓘ |
| hasDeclination | −02° (approximate) ⓘ |
| hasDiscoveryStatus | known variable star ⓘ |
| hasDistanceFromEarth | approximately 1200 light-years ⓘ |
| hasDistanceFromEarthParsec | approximately 370 parsecs ⓘ |
| hasEffectiveTemperature | approximately 3500 K ⓘ |
| hasEquatorialCoordinateSystem | J2000 ⓘ |
| hasLuminosityClass | giant ⓘ |
| hasMinimumBrightness | about magnitude 4.7 ⓘ |
| hasObservationMethod |
photometry
ⓘ
spectroscopy ⓘ |
| hasParallax | approximately 2.7 milliarcseconds ⓘ |
| hasPeakBrightness | about magnitude 4.0 ⓘ |
| hasPhotometricBand | V band ⓘ |
| hasRadialVelocity | approximately +22 km/s ⓘ |
| hasRightAscension | 06h 53m (approximate) ⓘ |
| hasSpectralType | M-type giant ⓘ |
| hasStellarClassification | M-type semiregular variable ⓘ |
| hasStellarPopulation | late-type giant star ⓘ |
| hasVariabilityPeriod |
approximately 270 days
ⓘ
approximately 570 days ⓘ |
| hasVariableType | semiregular variable star ⓘ |
| isCataloguedIn |
Bright Star Catalogue
NERFINISHED
ⓘ
General Catalogue of Variable Stars NERFINISHED ⓘ Henry Draper Catalogue NERFINISHED ⓘ |
| isInMilkyWayGalaxy | true ⓘ |
| isVisibleToNakedEye | true ⓘ |
| locatedInConstellation | Monoceros NERFINISHED ⓘ |
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: S Monocerotis Description of subject: S Monocerotis is a variable star system located in the constellation Monoceros, known for its brightness changes over time.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.