Arcturus
E433363
Arcturus is a bright, orange giant star in the constellation Boötes and one of the brightest stars visible from Earth, historically important in many cultures for navigation.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Arcturus canonical | 2 |
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
K-type giant star
ⓘ
bright giant star ⓘ red giant star ⓘ star ⓘ |
| absoluteMagnitudeV | −0.30 ⓘ |
| age_Gyr | about 7.1 ⓘ |
| apparentMagnitude | −0.05 ⓘ |
| associatedAsterism |
Great Diamond
NERFINISHED
ⓘ
Spring Triangle NERFINISHED ⓘ |
| bayerDesignation | Alpha Boötis NERFINISHED ⓘ |
| belongsTo | Arcturus moving group NERFINISHED ⓘ |
| colorIndexB−V | 1.23 ⓘ |
| constellation | Boötes NERFINISHED ⓘ |
| culturalSignificance | historically important in many cultures for navigation ⓘ |
| declination | +19°10′57″ ⓘ |
| distanceFromEarth_ly | about 36.7 light-years ⓘ |
| distanceFromEarth_pc | about 11.3 parsecs ⓘ |
| effectiveTemperature_K | about 4280 ⓘ |
| evolutionaryStage | red giant branch ⓘ |
| flamsteedDesignation | 16 Boötis NERFINISHED ⓘ |
| galacticPopulation | thick disk star ⓘ |
| hdDesignation | HD 124897 NERFINISHED ⓘ |
| heliacalRisingUsedFor | agricultural calendars in some ancient cultures ⓘ |
| hemisphereVisibility |
northern hemisphere
ⓘ
southern hemisphere ⓘ |
| hipparcosDesignation | HIP 69673 NERFINISHED ⓘ |
| hrDesignation | HR 5340 NERFINISHED ⓘ |
| locatedIn | Milky Way ⓘ |
| luminosity_solar | about 170 ⓘ |
| mass_solar | about 1.1 ⓘ |
| metallicity_Fe_H | about −0.5 ⓘ |
| nameEtymology | from Ancient Greek meaning "guardian of the bear" ⓘ |
| notableProperty |
brightest star in the constellation Boötes
ⓘ
brightest star in the northern celestial hemisphere ⓘ fourth-brightest star in the night sky ⓘ |
| observedBy |
Babylonian astronomers
ⓘ
Chinese astronomers ⓘ ancient Greek astronomers ⓘ |
| parallax_mas | about 88.8 milliarcseconds ⓘ |
| properMotionDec_mas_yr | about −1999 ⓘ |
| properMotionRA_mas_yr | about −1093 ⓘ |
| radialVelocity_km_s | about −5.2 ⓘ |
| radius_solar | about 25 ⓘ |
| rightAscension | 14h15m39.7s ⓘ |
| spectralType | K1.5III ⓘ |
| traditionalName | Arcturus NERFINISHED ⓘ |
| usedFor | celestial navigation ⓘ |
| variableStarType | irregular variable ⓘ |
| visibleToNakedEye | true ⓘ |
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: Arcturus Description of subject: Arcturus is a bright, orange giant star in the constellation Boötes and one of the brightest stars visible from Earth, historically important in many cultures for navigation.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.