Epsilon Eridani

E32390

Epsilon Eridani is a nearby young K-type main-sequence star in the constellation Eridanus, notable for its debris disk and status as a prominent target in exoplanet and SETI searches.

Try in SPARQL Jump to: Surface forms Statements Referenced by

All labels observed (8)

Label Occurrences
Epsilon Eridani canonical 5
ε Eridani 2
Eps Eri 1

Statements (53)

Predicate Object
instanceOf K-type main-sequence star
main-sequence star
star
age_Gyr about 0.4 to 1.0
apparentMagnitudeV 3.73
catalogDesignation Epsilon Eridani self-linksurface differs
surface form: Eps Eri

Epsilon Eridani self-linksurface differs
surface form: Gliese 144

Epsilon Eridani self-linksurface differs
surface form: HD 22049

Epsilon Eridani self-linksurface differs
surface form: HIP 16537

HR 1084
Epsilon Eridani self-linksurface differs
surface form: ε Eridani
chromosphericActivity high
colorIndexB−V 0.88
constellation Eridanus
debrisDiskStructure inner asteroid-belt-like ring
outer Kuiper-belt-like ring
declination −09° 27′ 30″
distanceFromEarth_ly about 10.5
distanceFromEarth_pc about 3.2
effectiveTemperature_K about 5100
EpsilonEridani_b_detectionMethod radial velocity
EpsilonEridani_b_minimumMass_Jupiter about 0.8 to 1.5
EpsilonEridani_b_orbitalPeriod_yr about 7
EpsilonEridani_b_semiMajorAxis_AU about 3.4
EpsilonEridani_b_status disputed
hasDebrisDisk true
hasExoplanetCandidate Epsilon Eridani b
hasPlanetarySystem candidate
hostStarForFictionalPlanet Epsilon Eridani system in science fiction
infraredExcess detected
isExoplanetSearchTarget yes
isSETITarget yes
luminosity_solar about 0.34
magneticActivityCycle present
mass_solar about 0.8
metallicity_Fe_H sub-solar
nearbyToSun yes
observedBy Atacama Large Millimeter/submillimeter Array
surface form: ALMA

Hubble Space Telescope
Spitzer Space Telescope
parallax_mas about 310
properMotionDec_mas_yr about 20
properMotionRA_mas_yr about −975
radialVelocity_km_s about 16.4
radius_solar about 0.74
rankByDistanceFromSun among nearest Sun-like stars
rightAscension 03h 32m 55s
rotationPeriod_days about 11.2
solarAnalog young solar analog
spectralType K2V
variableStarType BY Draconis-type variability
visibilityFromEarth visible to naked eye
XrayEmission strong

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: Epsilon Eridani
Description of subject: Epsilon Eridani is a nearby young K-type main-sequence star in the constellation Eridanus, notable for its debris disk and status as a prominent target in exoplanet and SETI searches.

Referenced by (13)

Full triples — surface form annotated when it differs from this entity's canonical label.

Project Ozma targetStar Epsilon Eridani
Epsilon Eridani catalogDesignation Epsilon Eridani self-linksurface differs
this entity surface form: ε Eridani
Epsilon Eridani catalogDesignation Epsilon Eridani self-linksurface differs
this entity surface form: Eps Eri
Epsilon Eridani catalogDesignation Epsilon Eridani self-linksurface differs
this entity surface form: HD 22049
Epsilon Eridani catalogDesignation Epsilon Eridani self-linksurface differs
this entity surface form: Gliese 144
Epsilon Eridani catalogDesignation Epsilon Eridani self-linksurface differs
this entity surface form: HIP 16537
Epsilon Eridani b orbits Epsilon Eridani
Epsilon Eridani b hostStar Epsilon Eridani
HR 1084 alsoKnownAs Epsilon Eridani
HR 1084 alsoKnownAs Epsilon Eridani
this entity surface form: ε Eridani
HR 1084 exoplanetarySystem Epsilon Eridani
this entity surface form: Epsilon Eridani system
HR 1084 hostStarOf Epsilon Eridani
this entity surface form: Epsilon Eridani planetary system