Alpha Tauri
E140926
Alpha Tauri, better known as Aldebaran, is a bright orange giant star in the constellation Taurus and one of the most prominent stars in the night sky.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Alpha Tauri canonical | 8 |
| AlphaTauri | 1 |
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
K-type giant star
ⓘ
orange giant star ⓘ star ⓘ |
| age | about 6 billion years (order of magnitude) ⓘ |
| alsoKnownAs |
Aldebaran
ⓘ
Alpha Tauri (α Tauri) ⓘ |
| apparentMagnitude | about 0.85 ⓘ |
| bayerDesignation |
Aldebaran
ⓘ
surface form:
α Tauri
|
| belongsToAsterism | Hyades (line-of-sight, not physically bound) ⓘ |
| canBeOccultedBy |
Moon
ⓘ
planets (rarely) ⓘ |
| color | orange ⓘ |
| culturalSignificance | one of the brightest stars in the night sky ⓘ |
| declination | +16° 30′ 33″ ⓘ |
| distanceFromEarth |
about 20 parsecs
ⓘ
about 65 light-years ⓘ |
| eclipticLatitude | near the ecliptic ⓘ |
| effectiveTemperature | about 3900 K ⓘ |
| evolutionaryStage | red giant branch star ⓘ |
| flamsteedDesignation | 87 Tauri ⓘ |
| galacticPopulation | thin disk star ⓘ |
| hasCompanion | faint red dwarf candidate (wide separation, debated) ⓘ |
| hasExoplanetCandidate |
Aldebaran planetary system
ⓘ
surface form:
Aldebaran b (candidate)
|
| hdDesignation | HD 29139 ⓘ |
| hipparcosDesignation | HIP 21421 ⓘ |
| hostConstellationAbbreviation | Tau ⓘ |
| hrDesignation | HR 1457 ⓘ |
| isBrightestStarOf | Taurus ⓘ |
| isReferenceStarFor | calibration of stellar atmosphere models ⓘ |
| locatedInConstellation | Taurus ⓘ |
| luminosity | about 400 times the luminosity of the Sun ⓘ |
| mass | about 1.2 times the mass of the Sun ⓘ |
| metallicity | slightly above solar ⓘ |
| observedFrom |
Northern Hemisphere
ⓘ
Southern Hemisphere (low northern latitudes) ⓘ |
| parallax | about 50 milliarcseconds ⓘ |
| properMotionDec | −189 mas/yr (approximate) ⓘ |
| properMotionRA | +62 mas/yr (approximate) ⓘ |
| radialVelocity | about +54 km/s ⓘ |
| radius | about 44 times the radius of the Sun ⓘ |
| rankByBrightness | among the 15 brightest stars in the night sky ⓘ |
| rightAscension | 04h 35m 55.2s ⓘ |
| spectralType | K5 III ⓘ |
| variableStarType | slight irregular variability ⓘ |
| visibleToNakedEye | yes ⓘ |
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 Tauri Description of subject: Alpha Tauri, better known as Aldebaran, is a bright orange giant star in the constellation Taurus and one of the most prominent stars in the night sky.
Referenced by (9)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Aldebaran
this entity surface form:
AlphaTauri