Kepler-186f
E380974
Kepler-186f is an Earth-sized exoplanet located in the habitable zone of its red dwarf star, notable as one of the first potentially Earth-like worlds discovered outside our solar system.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Kepler-186f canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T3631157 — 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: Kepler-186f Context triple: [Kepler space telescope, notableDiscovery, Kepler-186f]
-
A.
Kepler-452b
Kepler-452b is an exoplanet often dubbed "Earth’s cousin" because it orbits within the habitable zone of a Sun-like star and shares several Earth-like characteristics.
-
B.
Gliese 581c
Gliese 581c is an exoplanet orbiting the red dwarf star Gliese 581 in the constellation Libra, once considered a potentially habitable “super-Earth” due to its size and location in its star’s habitable zone.
-
C.
Kepler-22b
Kepler-22b is an exoplanet located in its star’s habitable zone and was one of the first such worlds discovered by NASA’s Kepler space telescope.
-
D.
Epsilon Eridani b
Epsilon Eridani b is a nearby Jupiter-like exoplanet candidate orbiting the young K-type star Epsilon Eridani, making it one of the closest known potential exoplanets to Earth.
-
E.
Gliese 581 star system
The Gliese 581 star system is a nearby red dwarf system in the constellation Libra that gained prominence for its potentially habitable exoplanets and as a target for interstellar messages from Earth.
- 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: Kepler-186f Target entity description: Kepler-186f is an Earth-sized exoplanet located in the habitable zone of its red dwarf star, notable as one of the first potentially Earth-like worlds discovered outside our solar system.
-
A.
Kepler-452b
Kepler-452b is an exoplanet often dubbed "Earth’s cousin" because it orbits within the habitable zone of a Sun-like star and shares several Earth-like characteristics.
-
B.
Gliese 581c
Gliese 581c is an exoplanet orbiting the red dwarf star Gliese 581 in the constellation Libra, once considered a potentially habitable “super-Earth” due to its size and location in its star’s habitable zone.
-
C.
Kepler-22b
Kepler-22b is an exoplanet located in its star’s habitable zone and was one of the first such worlds discovered by NASA’s Kepler space telescope.
-
D.
Epsilon Eridani b
Epsilon Eridani b is a nearby Jupiter-like exoplanet candidate orbiting the young K-type star Epsilon Eridani, making it one of the closest known potential exoplanets to Earth.
-
E.
Gliese 581 star system
The Gliese 581 star system is a nearby red dwarf system in the constellation Libra that gained prominence for its potentially habitable exoplanets and as a target for interstellar messages from Earth.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
exoplanet
ⓘ
terrestrial planet candidate ⓘ |
| announced | 2014-04-17 ⓘ |
| atmosphereDetectionStatus | no atmosphere detected as of 2024 ⓘ |
| catalogDesignation | KOI-571.05 ⓘ |
| catalogEntry |
Extrasolar Planets Encyclopaedia
ⓘ
NASA Exoplanet Archive ⓘ |
| constellation | Cygnus ⓘ |
| directImagingStatus | not directly imaged ⓘ |
| discoveredBy |
Kepler space telescope
ⓘ
Kepler space telescope ⓘ
surface form:
NASA Kepler mission
|
| discoveryFacility |
Kepler space telescope
ⓘ
surface form:
Kepler Space Observatory
|
| discoveryMethod | transit method ⓘ |
| discoveryPaperJournal | Science ⓘ |
| discoveryPaperLeadAuthor | Elisa V. Quintana ⓘ |
| discoveryYear | 2014 ⓘ |
| distanceFromEarth |
about 150 parsecs
ⓘ
about 492 light-years ⓘ |
| equilibriumTemperature | approximately 188 K ⓘ |
| followUpStudies | atmospheric and climate modeling in scientific literature ⓘ |
| habitabilityStatus | potentially habitable candidate ⓘ |
| habitableZoneStatus | within conservative habitable zone ⓘ |
| hostStarEffectiveTemperature | approximately 3755 K ⓘ |
| hostStarLuminosityRelativeToSun | about 0.04 times solar luminosity ⓘ |
| hostStarMassRelativeToSun | about 0.54 solar masses ⓘ |
| hostStarMetallicity | slightly sub-solar (approximate) ⓘ |
| hostStarRadiusRelativeToSun | about 0.52 solar radii ⓘ |
| hostStarSpectralType | M1V ⓘ |
| hostStarType | red dwarf ⓘ |
| inHabitableZoneOf | Kepler-186 ⓘ |
| massEstimateRelativeToEarth | likely between 1 and 3 Earth masses ⓘ |
| notableFor |
early potentially Earth-like exoplanet candidate
ⓘ
first Earth-sized exoplanet found in the habitable zone of a star ⓘ |
| orbitalEccentricity | poorly constrained ⓘ |
| orbitalPeriod | approximately 129.9 days ⓘ |
| orbitalResonance | no confirmed resonance with inner planets ⓘ |
| orbits | Kepler-186 ⓘ |
| planetarySystemSize | five known planets ⓘ |
| planetLetter | f ⓘ |
| planetType | Earth-size exoplanet ⓘ |
| positionInSystem | fifth known planet from its star ⓘ |
| potentialForLiquidWater | possible under suitable atmospheric conditions ⓘ |
| radiusRelativeToEarth | about 1.11 Earth radii ⓘ |
| semiMajorAxis | approximately 0.356 AU ⓘ |
| similarityToEarth | Earth-sized ⓘ |
| surfaceConditionCertainty | unknown ⓘ |
| surfaceTypeHypothesis | rocky ⓘ |
| systemName |
Kepler-186
ⓘ
surface form:
Kepler-186 system
|
| transitObservedBy |
Kepler space telescope
ⓘ
surface form:
Kepler photometer
|
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: Kepler-186f Description of subject: Kepler-186f is an Earth-sized exoplanet located in the habitable zone of its red dwarf star, notable as one of the first potentially Earth-like worlds discovered outside our solar system.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.