Aldebaran planetary system

E140933

planetary system stellar system

The Aldebaran planetary system is a stellar system centered on the bright orange giant star Aldebaran, located in the constellation Taurus and known to host at least one candidate exoplanet.

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All labels observed (9)

Label	Occurrences
Aldebaran b (disputed)	3
Aldebaran b	1
Aldebaran b (candidate)	1
Aldebaran b has minimum mass of several Jupiter masses	1
Aldebaran b is debated	1
Aldebaran planetary system canonical	1
Aldebaran star system	1
Aldebaran system	1
candidate exoplanet Aldebaran b	1

How this entity was disambiguated

This entity first appeared as the object of triple T1236506 — 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: Aldebaran planetary system
Context triple: [Aldebaran, isPrimaryStarOf, Aldebaran planetary system]

A. Epsilon Eridani
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.
B. Tau Ceti
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.
C. Ursa Minor Beta
Ursa Minor Beta is a fictional planet in Douglas Adams' "The Hitchhiker's Guide to the Galaxy" series, best known as the corporate home of the Guide itself.
D. Terzan 7
Terzan 7 is a relatively young, metal-rich globular cluster located in the constellation Sagittarius and dynamically associated with the Sagittarius Dwarf Spheroidal Galaxy.
E. Epsilon Sagittarii
Epsilon Sagittarii is a prominent binary star system in the constellation Sagittarius, notable as one of its most luminous and easily visible stars.
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: Aldebaran planetary system
Target entity description: The Aldebaran planetary system is a stellar system centered on the bright orange giant star Aldebaran, located in the constellation Taurus and known to host at least one candidate exoplanet.

A. Epsilon Eridani
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.
B. Tau Ceti
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.
C. Ursa Minor Beta
Ursa Minor Beta is a fictional planet in Douglas Adams' "The Hitchhiker's Guide to the Galaxy" series, best known as the corporate home of the Guide itself.
D. Terzan 7
Terzan 7 is a relatively young, metal-rich globular cluster located in the constellation Sagittarius and dynamically associated with the Sagittarius Dwarf Spheroidal Galaxy.
E. Epsilon Sagittarii
Epsilon Sagittarii is a prominent binary star system in the constellation Sagittarius, notable as one of its most luminous and easily visible stars.
F. None of above. chosen

Statements (48)

Predicate	Object
instanceOf	planetary system ⓘ stellar system ⓘ
apparentMagnitudeOfHostStar	about 0.85 ⓘ
belongsToGalaxy	Milky Way ⓘ
culturalSignificance	host star prominent in many ancient cultures ⓘ
declination	+16° 30′ 33″ ⓘ
distanceFromEarth	approximately 20 parsecs ⓘ approximately 65 light-years ⓘ
eclipticProximity	near the ecliptic ⓘ
hasExoplanetCandidate	Aldebaran b ⓘ linked to: Aldebaran B
hasRadialVelocityPlanetCandidate	Aldebaran b ⓘ linked to: Aldebaran B
hasStar	Aldebaran ⓘ
hostStarAge	about 6.5 billion years ⓘ
hostStarBayerDesignation	Alpha Tauri ⓘ
hostStarColor	orange ⓘ
hostStarEffectiveTemperature	about 3900 K ⓘ
hostStarEvolutionaryStage	red giant branch ⓘ
hostStarFlamsteedDesignation	87 Tauri ⓘ
hostStarFutureEvolution	will eventually shed outer layers and become a white dwarf ⓘ
hostStarHasExpandedEnvelope	yes ⓘ
hostStarHDDesignation	HD 29139 ⓘ
hostStarHIPDesignation	HIP 21421 ⓘ
hostStarHRDesignation	HR 1457 ⓘ
hostStarIsBrightestStarOfConstellation	true ⓘ
hostStarIsBrightStar	one of the brightest stars in the night sky ⓘ
hostStarLuminosity	about 400 times solar luminosity ⓘ
hostStarMass	about 1.1 solar masses ⓘ
hostStarMetallicity	near-solar metallicity ⓘ
hostStarParallax	about 50 milliarcseconds ⓘ
hostStarRadialVelocity	about 54 km/s ⓘ
hostStarRadius	about 44 solar radii ⓘ
hostStarSpectralType	K5III ⓘ
hostStarSurfaceGravity	low compared to the Sun ⓘ
hostStarTraditionalName	Aldebaran ⓘ
hostStarType	orange giant star ⓘ
hostStarVariableType	slow irregular variable ⓘ
locatedInConstellation	Taurus ⓘ
nakedEyeVisibility	host star visible to naked eye ⓘ
occultedByMoon	host star can be occulted by the Moon ⓘ
occultedByPlanets	host star can be occulted by planets ⓘ
planetarySystemStatus	confirmed host star with at least one candidate exoplanet ⓘ
planetCandidateStatus	Aldebaran b is debated ⓘ linked to: Aldebaran planetary system
planetDetectionMethod	radial velocity ⓘ
planetMinimumMass	Aldebaran b has minimum mass of several Jupiter masses ⓘ linked to: Aldebaran planetary system
planetOrbitalDistance	Aldebaran b semi-major axis is about 1.5 AU ⓘ
planetOrbitalPeriod	Aldebaran b orbital period is about 600 days ⓘ
rightAscension	04h 35m 55.2s ⓘ
visibleFromEarth	yes ⓘ

How these facts were elicited