9 Sagittarii
E479070
9 Sagittarii is a massive, luminous O-type star system in the constellation Sagittarius that plays a key role in energizing and illuminating the surrounding interstellar gas.
All labels observed (1)
| Label | Occurrences |
|---|---|
| 9 Sagittarii canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T4911599 — 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: 9 Sagittarii Context triple: [Lagoon Nebula, notableIonizingStar, 9 Sagittarii]
-
A.
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.
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B.
Lambda Sagittarii
Lambda Sagittarii is a bright star in the constellation Sagittarius that marks the top of the Teapot asterism.
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C.
Zeta Sagittarii
Zeta Sagittarii is a bright multiple star system in the constellation Sagittarius, forming part of the asterism known as the Teapot.
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D.
Phi Sagittarii
Phi Sagittarii is a bright B-type giant star in the constellation Sagittarius, notable as one of the stars forming the asterism known as the Teapot.
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E.
Alpha Capricorni
Alpha Capricorni is a bright multiple star system in the constellation Capricornus, visible to the naked eye as a single star but actually composed of two widely separated components.
- 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: 9 Sagittarii Target entity description: 9 Sagittarii is a massive, luminous O-type star system in the constellation Sagittarius that plays a key role in energizing and illuminating the surrounding interstellar gas.
-
A.
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.
-
B.
Lambda Sagittarii
Lambda Sagittarii is a bright star in the constellation Sagittarius that marks the top of the Teapot asterism.
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C.
Zeta Sagittarii
Zeta Sagittarii is a bright multiple star system in the constellation Sagittarius, forming part of the asterism known as the Teapot.
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D.
Phi Sagittarii
Phi Sagittarii is a bright B-type giant star in the constellation Sagittarius, notable as one of the stars forming the asterism known as the Teapot.
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E.
Alpha Capricorni
Alpha Capricorni is a bright multiple star system in the constellation Capricornus, visible to the naked eye as a single star but actually composed of two widely separated components.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
O-type star
ⓘ
massive star ⓘ spectroscopic binary ⓘ stellar system ⓘ |
| age | a few million years ⓘ |
| apparentMagnitudeV | 5.97 ⓘ |
| belongsToClusterOrAssociation | NGC 6530 region NERFINISHED ⓘ |
| binaryStatus | double-lined spectroscopic binary ⓘ |
| catalogDesignation |
CD−24 13810
NERFINISHED
ⓘ
HD 164794 NERFINISHED ⓘ HIP 88333 NERFINISHED ⓘ HR 6727 NERFINISHED ⓘ SAO 186149 NERFINISHED ⓘ |
| colorIndexBminusV | +0.19 ⓘ |
| componentCount | 2 ⓘ |
| constellation | Sagittarius NERFINISHED ⓘ |
| declination | −24°21′38″ ⓘ |
| distance |
approximately 1,500 parsecs
ⓘ
approximately 5,000 light-years ⓘ |
| drivesIonization | Lagoon Nebula H II region NERFINISHED ⓘ |
| drivesStellarWindBubble | yes ⓘ |
| effectiveTemperature | about 40,000 K ⓘ |
| energizes | surrounding interstellar gas ⓘ |
| equatorialCoordinateSystem | ICRS NERFINISHED ⓘ |
| evolutionaryStatus | main-sequence ⓘ |
| galacticEnvironment | Lagoon Nebula NERFINISHED ⓘ |
| galacticLatitude | −1.2 degrees ⓘ |
| galacticLongitude | 6.0 degrees ⓘ |
| hasStellarWind | yes ⓘ |
| ionizingPhotonSourceFor | M8 (Lagoon Nebula) NERFINISHED ⓘ |
| locatedIn |
Milky Way
ⓘ
Sagittarius OB1 association NERFINISHED ⓘ |
| luminosity | several hundred thousand times solar luminosity ⓘ |
| mass | greater than 40 solar masses ⓘ |
| notableFor |
high-mass O-type binary in Lagoon Nebula
ⓘ
strong ionizing radiation field ⓘ |
| orbitalPeriod | approximately 9.1 days ⓘ |
| parallax | 0.66 mas ⓘ |
| primaryComponentType | O-type main-sequence star ⓘ |
| properMotionDec | −2.27 mas/yr ⓘ |
| properMotionRA | −0.88 mas/yr ⓘ |
| radialVelocity | +11 km/s ⓘ |
| rightAscension | 18h03m52s ⓘ |
| secondaryComponentType | O-type main-sequence star ⓘ |
| spectralType | O4 V((f)) ⓘ |
| variableType | eclipsing binary candidate ⓘ |
| visibleToNakedEye | yes ⓘ |
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: 9 Sagittarii Description of subject: 9 Sagittarii is a massive, luminous O-type star system in the constellation Sagittarius that plays a key role in energizing and illuminating the surrounding interstellar gas.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.