47 Tucanae
E492362
47 Tucanae is a massive, bright globular star cluster in the constellation Tucana, notable as one of the closest and most studied such clusters in the Milky Way.
All labels observed (6)
| Label | Occurrences |
|---|---|
| NGC 104 | 6 |
| 47 Tucanae canonical | 5 |
| 47 Tuc | 2 |
| 47 Tuc V | 1 |
| 47 Tuc W | 1 |
| 47 Tucanae (as a notable southern cluster) | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5089068 — 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: 47 Tucanae Context triple: [Tucana, contains, 47 Tucanae]
-
A.
Hercules Globular Cluster
The Hercules Globular Cluster is a bright, densely packed spherical star cluster in the constellation Hercules, notable as one of the most prominent and studied globular clusters in the northern sky.
-
B.
Messier 67
Messier 67 is a rich, old open star cluster located in the constellation Cancer and is one of the most studied stellar clusters in the Milky Way.
-
C.
Omega Centauri
Omega Centauri is the largest and brightest known globular star cluster in the Milky Way, visible to the naked eye and containing millions of ancient stars.
-
D.
Messier 55
Messier 55 is a large, relatively loose globular star cluster located in the constellation Sagittarius, visible in small telescopes as a faint, diffuse ball of stars.
-
E.
Messier 14
Messier 14 is a bright globular star cluster in the constellation Ophiuchus, composed of hundreds of thousands of ancient stars densely packed together.
- 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: 47 Tucanae Target entity description: 47 Tucanae is a massive, bright globular star cluster in the constellation Tucana, notable as one of the closest and most studied such clusters in the Milky Way.
-
A.
Hercules Globular Cluster
The Hercules Globular Cluster is a bright, densely packed spherical star cluster in the constellation Hercules, notable as one of the most prominent and studied globular clusters in the northern sky.
-
B.
Messier 67
Messier 67 is a rich, old open star cluster located in the constellation Cancer and is one of the most studied stellar clusters in the Milky Way.
-
C.
Omega Centauri
Omega Centauri is the largest and brightest known globular star cluster in the Milky Way, visible to the naked eye and containing millions of ancient stars.
-
D.
Messier 55
Messier 55 is a large, relatively loose globular star cluster located in the constellation Sagittarius, visible in small telescopes as a faint, diffuse ball of stars.
-
E.
Messier 14
Messier 14 is a bright globular star cluster in the constellation Ophiuchus, composed of hundreds of thousands of ancient stars densely packed together.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf | globular star cluster ⓘ |
| age | about 11–13 billion years ⓘ |
| alsoKnownAs |
47 Tuc
ⓘ
linked to:
47 Tucanae
Caldwell 106 ⓘ NGC 104 ⓘ
linked to:
47 Tucanae
|
| angularDiameter | about 30 arcminutes ⓘ |
| apparentMagnitudeV | about 4.0 ⓘ |
| brighterOnlyThan | Omega Centauri ⓘ |
| CaldwellNumber | C106 ⓘ |
| catalog |
Caldwell catalogue
ⓘ
New General Catalogue ⓘ |
| catalogNumber |
NGC 104
ⓘ
linked to:
47 Tucanae
|
| constellation | Tucana ⓘ |
| contains |
X-ray binaries
ⓘ
blue straggler stars ⓘ horizontal branch stars ⓘ millisecond pulsars ⓘ red giant branch stars ⓘ white dwarfs ⓘ |
| coreRadius | about 0.5 parsecs ⓘ |
| declination | −72° 05′ ⓘ |
| discoveredBy |
Nicolas-Louis de Lacaille
ⓘ
linked to:
Nicolas de Lacaille
|
| discoveryYear | 1751–1752 ⓘ |
| distanceFromEarth |
about 13,000 light-years
ⓘ
about 4,000 parsecs ⓘ |
| galacticComponent | Galactic halo ⓘ |
| galacticLatitude | about −44° ⓘ |
| galacticLongitude | about 305° ⓘ |
| halfLightRadius | about 3.2 parsecs ⓘ |
| hemisphereVisibility | best seen from Southern Hemisphere ⓘ |
| lineOfSightNear | Small Magellanic Cloud ⓘ |
| locatedIn | Milky Way ⓘ |
| mass | about 10^6 solar masses ⓘ |
| metallicity[Fe/H] | about -0.7 ⓘ |
| numberOfKnownMillisecondPulsars | over 20 ⓘ |
| observedBy |
Chandra X-ray Observatory
ⓘ
Hubble Space Telescope ⓘ Very Large Telescope ⓘ |
| rankByBrightness | second-brightest globular cluster in the sky ⓘ |
| rightAscension | 00h 24m ⓘ |
| skyRegion | Small Magellanic Cloud region of the sky ⓘ |
| surfaceBrightness | very high ⓘ |
| usedForStudyOf |
binary star evolution
ⓘ
dynamics of dense stellar systems ⓘ millisecond pulsar populations ⓘ stellar evolution ⓘ |
| visibility | naked-eye object under dark southern skies ⓘ |
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: 47 Tucanae Description of subject: 47 Tucanae is a massive, bright globular star cluster in the constellation Tucana, notable as one of the closest and most studied such clusters in the Milky Way.
Referenced by (16)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
constellation Tucana
subject linked to:
constellation Tucana
subject linked to:
47 Tucanae (in its vicinity on the sky)
linked to: 47 Tucanae
subject linked to:
47 Tucanae (in its vicinity on the sky)
linked to: 47 Tucanae
subject linked to:
47 Tucanae (in its vicinity on the sky)
linked to: 47 Tucanae
linked to: 47 Tucanae
linked to: 47 Tucanae
linked to: 47 Tucanae
linked to: 47 Tucanae
linked to: 47 Tucanae