HD 186408
E919754
HD 186408 is a Sun-like star in the constellation Cygnus that has been studied as a solar analog and considered a potential host for habitable planets.
All labels observed (1)
| Label | Occurrences |
|---|---|
| HD 186408 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T11317401 — 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: HD 186408 Context triple: [Cosmic Call 1999, targetedStarSystem, HD 186408]
-
A.
HD 178428
HD 178428 is a distant star that was selected as one of the targets for the 1999 Cosmic Call interstellar radio message.
-
B.
HD 106490
HD 106490 is a bright blue-white giant star in the constellation Crux, commonly known as Delta Crucis and forming part of the Southern Cross asterism.
-
C.
HD 168454
HD 168454 is the Henry Draper Catalogue designation for Kaus Australis, the bright primary star in the constellation Sagittarius.
-
D.
HD 108903
HD 108903 is the Henry Draper Catalogue designation for Gamma Crucis, a bright red giant star in the constellation Crux.
-
E.
HIP 61084
HIP 61084 is the Hipparcos catalog designation for Epsilon Crucis, a bright giant star in the Southern Cross constellation.
- 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: HD 186408 Target entity description: HD 186408 is a Sun-like star in the constellation Cygnus that has been studied as a solar analog and considered a potential host for habitable planets.
-
A.
HD 178428
HD 178428 is a distant star that was selected as one of the targets for the 1999 Cosmic Call interstellar radio message.
-
B.
HD 106490
HD 106490 is a bright blue-white giant star in the constellation Crux, commonly known as Delta Crucis and forming part of the Southern Cross asterism.
-
C.
HD 168454
HD 168454 is the Henry Draper Catalogue designation for Kaus Australis, the bright primary star in the constellation Sagittarius.
-
D.
HD 108903
HD 108903 is the Henry Draper Catalogue designation for Gamma Crucis, a bright red giant star in the constellation Crux.
-
E.
HIP 61084
HIP 61084 is the Hipparcos catalog designation for Epsilon Crucis, a bright giant star in the Southern Cross constellation.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
G-type main-sequence star
ⓘ
solar analog ⓘ star ⓘ |
| age | similar to or slightly older than the Sun ⓘ |
| apparentMagnitudeV | 5.96 ⓘ |
| colorIndexBminusV | about 0.64 ⓘ |
| constellation | Cygnus NERFINISHED ⓘ |
| declination | +50° 31′ ⓘ |
| distanceFromEarth | about 69 light-years ⓘ |
| effectiveTemperature | about 5800 K ⓘ |
| equatorialCoordinateSystem | ICRS NERFINISHED ⓘ |
| galacticPopulation | thin disk star ⓘ |
| hasAlternativeName |
16 Cygni A
NERFINISHED
ⓘ
BD+50 2790 NERFINISHED ⓘ HIP 96895 NERFINISHED ⓘ HR 7503 NERFINISHED ⓘ SAO 31898 NERFINISHED ⓘ |
| hasBeenUsedFor |
comparative studies of solar composition
ⓘ
studies of stellar activity cycles ⓘ tests of stellar age-dating methods ⓘ |
| hasCatalogEntry |
Bright Star Catalogue
NERFINISHED
ⓘ
Henry Draper Catalogue NERFINISHED ⓘ Hipparcos Catalogue NERFINISHED ⓘ |
| hasCompanion |
16 Cygni B
NERFINISHED
ⓘ
16 Cygni C NERFINISHED ⓘ HD 186427 NERFINISHED ⓘ |
| hasKnownPlanet | false (as of current observations) ⓘ |
| hasProperMotionDec | about 385 mas/yr ⓘ |
| hasProperMotionRA | about 324 mas/yr ⓘ |
| hasWideBinarySeparationWith | HD 186427 NERFINISHED ⓘ |
| isBrighterComponentOf | 16 Cygni A–B pair NERFINISHED ⓘ |
| isCandidateHostFor | habitable planets ⓘ |
| isComponentOf | 16 Cygni triple star system NERFINISHED ⓘ |
| isStudiedAs |
solar analog for stellar evolution
ⓘ
solar twin candidate ⓘ |
| isSunLike | true ⓘ |
| luminosity | about 1.2 times solar luminosity ⓘ |
| mass | about 1.05 solar masses ⓘ |
| metallicity[Fe/H] | slightly above solar ⓘ |
| parallax | 47.44 mas ⓘ |
| radialVelocity | about −28 km/s ⓘ |
| radius | about 1.1 solar radii ⓘ |
| rightAscension | about 19h 41m ⓘ |
| spectralType | G1V ⓘ |
| variabilityType | not known to be significantly variable ⓘ |
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: HD 186408 Description of subject: HD 186408 is a Sun-like star in the constellation Cygnus that has been studied as a solar analog and considered a potential host for habitable planets.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Cosmic Call 1999