Octans
E492361
Octans is a faint southern-sky constellation best known for containing the south celestial pole.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Octans canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T5089064 — 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: Octans Context triple: [Tucana, borderingConstellation, Octans]
-
A.
Piscis Austrinus
Piscis Austrinus is a southern constellation traditionally depicted as a fish and best known for containing the bright star Fomalhaut.
-
B.
Microscopium
Microscopium is a small, faint constellation in the southern sky, representing a microscope and introduced in the 18th century by the astronomer Nicolas-Louis de Lacaille.
-
C.
Crux Australis
Crux Australis is the Latin name for the Southern Cross, a prominent constellation in the southern sky used historically for navigation and featured on several national flags.
-
D.
Corona Australis
Corona Australis is a small, southern constellation near the Milky Way, notable for its distinctive arc of stars and associated dark molecular cloud complex rich in star formation.
-
E.
Reticulum
Reticulum is a small, faint southern constellation named after a reticle or net, located near the Large Magellanic Cloud.
- 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: Octans Target entity description: Octans is a faint southern-sky constellation best known for containing the south celestial pole.
-
A.
Piscis Austrinus
Piscis Austrinus is a southern constellation traditionally depicted as a fish and best known for containing the bright star Fomalhaut.
-
B.
Microscopium
Microscopium is a small, faint constellation in the southern sky, representing a microscope and introduced in the 18th century by the astronomer Nicolas-Louis de Lacaille.
-
C.
Crux Australis
Crux Australis is the Latin name for the Southern Cross, a prominent constellation in the southern sky used historically for navigation and featured on several national flags.
-
D.
Corona Australis
Corona Australis is a small, southern constellation near the Milky Way, notable for its distinctive arc of stars and associated dark molecular cloud complex rich in star formation.
-
E.
Reticulum
Reticulum is a small, faint southern constellation named after a reticle or net, located near the Large Magellanic Cloud.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
constellation
ⓘ
southern-sky constellation ⓘ |
| abbreviation | Oct ⓘ |
| areaSquareDegrees | 291 ⓘ |
| bestKnownFor | containing the south celestial pole ⓘ |
| borderedBy |
Apus
NERFINISHED
ⓘ
Chamaeleon NERFINISHED ⓘ Hydrus NERFINISHED ⓘ Indus NERFINISHED ⓘ Mensa ⓘ Pavo NERFINISHED ⓘ Tucana NERFINISHED ⓘ |
| brightestStar | Nu Octantis NERFINISHED ⓘ |
| brightestStarApparentMagnitude | 3.73 ⓘ |
| contains |
Beta Octantis
NERFINISHED
ⓘ
Delta Octantis NERFINISHED ⓘ HD 142022 NERFINISHED ⓘ NGC 2573 NERFINISHED ⓘ NGC 6438 NERFINISHED ⓘ NGC 6438A NERFINISHED ⓘ NGC 7095 NERFINISHED ⓘ Nu Octantis NERFINISHED ⓘ Octans association NERFINISHED ⓘ Pi Octantis NERFINISHED ⓘ Sigma Octantis NERFINISHED ⓘ Theta Octantis NERFINISHED ⓘ south celestial pole ⓘ |
| declinationRange | −74° to −90° ⓘ |
| family | La Caille family NERFINISHED ⓘ |
| genitiveForm | Octantis ⓘ |
| hasIAUDesignation | Octans NERFINISHED ⓘ |
| hasNumberOfBayerFlamsteedStars | 19 ⓘ |
| hasNumberOfMainStars | 3 ⓘ |
| hasNumberOfMessierObjects | 0 ⓘ |
| hasNumberOfStarsWithPlanets | 3 ⓘ |
| introducedBy | Nicolas-Louis de Lacaille NERFINISHED ⓘ |
| introducedInCentury | 18th century ⓘ |
| isFaint | true ⓘ |
| liesNear | Small Magellanic Cloud NERFINISHED ⓘ |
| locatedIn | southern celestial hemisphere ⓘ |
| namedAfter | octant ⓘ |
| poleStarOfSouthCelestialPole | Sigma Octantis NERFINISHED ⓘ |
| rankByArea | 50 ⓘ |
| recognizedByIAU | true ⓘ |
| rightAscensionRange | 21h to 6h ⓘ |
| SigmaOctantisApparentMagnitude | 5.47 ⓘ |
| visibleAtLatitudesBetween | 0° and 90°S ⓘ |
| zodiacal | false ⓘ |
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: Octans Description of subject: Octans is a faint southern-sky constellation best known for containing the south celestial pole.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Tucana