Tau Ceti
E31702
Tau Ceti is a nearby Sun-like star in the constellation Cetus, notable for its stability, potential planetary system, and historical importance as an early target in the search for extraterrestrial intelligence.
All labels observed (4)
| Label | Occurrences |
|---|---|
| Tau Ceti canonical | 8 |
| Tau Ceti planetary system | 2 |
| Tau Ceti system | 1 |
| τ Ceti | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T245921 — 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: Tau Ceti Context triple: [Project Ozma, targetStar, Tau Ceti]
-
A.
Vulcan
Vulcan is the Roman god of fire, metalworking, and the forge, often depicted as a blacksmith crafting weapons and armor for the gods.
-
B.
Gaia
Gaia is the primordial Greek earth goddess, revered as the ancestral mother of all life and the personification of the Earth itself.
-
C.
Alcyone
Alcyone is one of the Pleiades in Greek mythology, a daughter of the Titan Atlas and often associated with the star cluster of the same name.
-
D.
Ceres
Ceres is the largest object in the asteroid belt between Mars and Jupiter and a dwarf planet composed primarily of rock and ice.
-
E.
Eris
Eris is a distant, icy dwarf planet in the outer reaches of the Solar System, notable for its size comparable to Pluto and its role in prompting the redefinition of planetary status.
- 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: Tau Ceti Target entity description: Tau Ceti is a nearby Sun-like star in the constellation Cetus, notable for its stability, potential planetary system, and historical importance as an early target in the search for extraterrestrial intelligence.
-
A.
Vulcan
Vulcan is the Roman god of fire, metalworking, and the forge, often depicted as a blacksmith crafting weapons and armor for the gods.
-
B.
Gaia
Gaia is the primordial Greek earth goddess, revered as the ancestral mother of all life and the personification of the Earth itself.
-
C.
Alcyone
Alcyone is one of the Pleiades in Greek mythology, a daughter of the Titan Atlas and often associated with the star cluster of the same name.
-
D.
Ceres
Ceres is the largest object in the asteroid belt between Mars and Jupiter and a dwarf planet composed primarily of rock and ice.
-
E.
Eris
Eris is a distant, icy dwarf planet in the outer reaches of the Solar System, notable for its size comparable to Pluto and its role in prompting the redefinition of planetary status.
- F. None of above. chosen
Statements (51)
| Predicate | Object |
|---|---|
| instanceOf |
G-type star
ⓘ
astronomical object ⓘ main-sequence star ⓘ single star ⓘ |
| age_Gyr |
about 5.8
ⓘ
older than the Sun ⓘ |
| apparentMagnitudeV | 3.50 ⓘ |
| BayerDesignation |
Tau Ceti
self-linksurface differs
ⓘ
surface form:
τ Ceti
|
| colorIndexB−V | 0.72 ⓘ |
| constellation | Cetus ⓘ |
| culturalRole | frequent setting in science fiction ⓘ |
| debrisDiskDustContent | more massive than Solar System’s Kuiper Belt ⓘ |
| debrisDiskType | cold debris disk ⓘ |
| declination | −15° 56′ 15″ ⓘ |
| distanceFromEarth_ly | about 11.9 light-years ⓘ |
| distanceFromEarth_pc | about 3.65 parsecs ⓘ |
| effectiveTemperature_K | about 5340 ⓘ |
| FlamsteedDesignation | 52 Ceti ⓘ |
| habitableZoneCandidates |
Tau Ceti e
ⓘ
Tau Ceti f ⓘ |
| hasCandidateExoplanets | true ⓘ |
| hasCandidatePlanet |
Tau Ceti e
ⓘ
Tau Ceti f ⓘ |
| hasDebrisDisk | true ⓘ |
| isSETITarget | true ⓘ |
| luminosity_solar | about 0.52 ⓘ |
| mass_solar | about 0.78 ⓘ |
| metallicity_Fe_H | about −0.5 ⓘ |
| notableFor |
Sun-like properties
ⓘ
early target in the search for extraterrestrial intelligence ⓘ high long-term stability ⓘ proximity to the Solar System ⓘ |
| numberOfReportedPlanetCandidates | up to 5 ⓘ |
| parallax_mas | about 273 milliarcseconds ⓘ |
| planetarySystemStatus | candidates not yet universally confirmed ⓘ |
| planetDetectionMethod | radial velocity ⓘ |
| properMotionDec_mas_yr | +854 ⓘ |
| properMotionRA_mas_yr | +−1721 ⓘ |
| radialVelocity_km_s | about −16.6 ⓘ |
| radius_solar | about 0.79 ⓘ |
| rightAscension | 01h 44m 04s ⓘ |
| rotationPeriod_days | about 34 ⓘ |
| solarAnalogStatus | Sun-like star ⓘ |
| spectralType | G8.5V ⓘ |
| stellarClass | G-type main-sequence ⓘ |
| suspectedPlanetarySystem | true ⓘ |
| variability |
low stellar activity
ⓘ
photometrically stable ⓘ |
| visibleFrom | both hemispheres ⓘ |
| wasObservedBy |
Project Ozma
ⓘ
surface form:
Project Ozma II
various SETI programs ⓘ |
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: Tau Ceti Description of subject: Tau Ceti is a nearby Sun-like star in the constellation Cetus, notable for its stability, potential planetary system, and historical importance as an early target in the search for extraterrestrial intelligence.
Referenced by (12)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
τ Ceti
this entity surface form:
Tau Ceti planetary system
this entity surface form:
Tau Ceti system
this entity surface form:
Tau Ceti planetary system