Sagittarius Arm
E113062
The Sagittarius Arm is one of the main spiral arms of the Milky Way galaxy, rich in star-forming regions and nebulae, located between the galactic center and the outer Perseus Arm.
All labels observed (9)
How this entity was disambiguated
This entity first appeared as the object of triple T942892 — 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: Sagittarius Arm Context triple: [Scutum–Centaurus Arm, separatedFrom, Sagittarius Arm]
-
A.
Scutum–Centaurus Arm
The Scutum–Centaurus Arm is one of the major spiral arms of the Milky Way galaxy, rich in stars, gas, and star-forming regions.
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B.
Orion Arm
The Orion Arm is a minor spiral arm of the Milky Way galaxy that contains our Solar System and many of the stars visible in the night sky.
-
C.
Gould Belt
The Gould Belt is a nearby, partial ring of young stars, gas, and star-forming regions tilted to the Milky Way’s plane and encompassing many of the bright constellations visible from Earth.
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D.
Magellanic Stream
The Magellanic Stream is a vast, trailing ribbon of gas stretching across the sky, stripped from the Magellanic Clouds as they interact gravitationally with the Milky Way.
-
E.
Milky Way center
The Milky Way center is the dense, energetic core of our galaxy, hosting a supermassive black hole surrounded by stars, gas, and dust.
- 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: Sagittarius Arm Target entity description: The Sagittarius Arm is one of the main spiral arms of the Milky Way galaxy, rich in star-forming regions and nebulae, located between the galactic center and the outer Perseus Arm.
-
A.
Scutum–Centaurus Arm
The Scutum–Centaurus Arm is one of the major spiral arms of the Milky Way galaxy, rich in stars, gas, and star-forming regions.
-
B.
Orion Arm
The Orion Arm is a minor spiral arm of the Milky Way galaxy that contains our Solar System and many of the stars visible in the night sky.
-
C.
Gould Belt
The Gould Belt is a nearby, partial ring of young stars, gas, and star-forming regions tilted to the Milky Way’s plane and encompassing many of the bright constellations visible from Earth.
-
D.
Magellanic Stream
The Magellanic Stream is a vast, trailing ribbon of gas stretching across the sky, stripped from the Magellanic Clouds as they interact gravitationally with the Milky Way.
-
E.
Milky Way center
The Milky Way center is the dense, energetic core of our galaxy, hosting a supermassive black hole surrounded by stars, gas, and dust.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
spiral arm
ⓘ
structure in the Milky Way ⓘ |
| adjacentTo |
Perseus Arm
ⓘ
Scutum–Centaurus Arm ⓘ |
| alternativeName |
Sagittarius-Carina Arm
ⓘ
linked to:
Sagittarius Arm
Sagittarius–Carina Arm ⓘ
linked to:
Sagittarius Arm
|
| armType | major spiral arm ⓘ |
| contains |
Eagle Nebula
ⓘ
H II regions ⓘ Lagoon Nebula ⓘ M16 (Eagle Nebula) ⓘ
linked to:
Eagle Nebula
M17 (Omega Nebula) ⓘ
linked to:
Messier 17
M20 (Trifid Nebula) ⓘ
linked to:
Messier 20
M8 (Lagoon Nebula) ⓘ
linked to:
Lagoon Nebula
Omega Nebula ⓘ Trifid Nebula ⓘ dense interstellar medium ⓘ dust lanes ⓘ giant molecular clouds ⓘ massive OB associations ⓘ massive star-forming complexes ⓘ nebulae ⓘ open star clusters ⓘ star-forming regions ⓘ supernova remnants ⓘ young massive stars ⓘ |
| distanceFromSun | several kiloparsecs ⓘ |
| galacticRadiusRange | intermediate galactocentric radii ⓘ |
| galacticStructureRole | connects inner and outer Milky Way regions ⓘ |
| hasProperty |
prominent in radio and infrared wavelengths
ⓘ
rich in ionized gas regions ⓘ rich in young stellar populations ⓘ |
| locatedIn |
Milky Way disk
ⓘ
linked to:
Galactic thin disk
|
| namedAfter |
Sagittarius constellation
ⓘ
linked to:
Sagittarius
|
| observedFrom | Earth ⓘ |
| orientation | roughly tangential to line of sight from Sun in Sagittarius direction ⓘ |
| partOf | Milky Way ⓘ |
| positionRelativeToGalacticCenter | between galactic center and Perseus Arm ⓘ |
| roleInGalaxy | major site of ongoing star formation ⓘ |
| spiralPattern | logarithmic spiral ⓘ |
| tracedBy |
21-cm hydrogen line
ⓘ
CO emission ⓘ maser sources ⓘ radio observations ⓘ young stellar objects ⓘ |
| visibleIn |
Carina constellation region
ⓘ
Sagittarius constellation region ⓘ
linked to:
Sagittarius
Scutum constellation region ⓘ
linked to:
Scutum Star Cloud
|
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: Sagittarius Arm Description of subject: The Sagittarius Arm is one of the main spiral arms of the Milky Way galaxy, rich in star-forming regions and nebulae, located between the galactic center and the outer Perseus Arm.
Referenced by (28)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Sagittarius Arm
linked to: Sagittarius Arm
linked to: Sagittarius Arm
subject linked to:
Open cluster NGC 6530
linked to: Sagittarius Arm
linked to: Sagittarius Arm
linked to: Sagittarius Arm
linked to: Sagittarius Arm
linked to: Sagittarius Arm
linked to: Sagittarius Arm
linked to: Sagittarius Arm
linked to: Sagittarius Arm
linked to: Sagittarius Arm
linked to: Sagittarius Arm
linked to: Sagittarius Arm
linked to: Sagittarius Arm
linked to: Sagittarius Arm
linked to: Sagittarius Arm
subject linked to:
Carina constellation
linked to: Sagittarius Arm
linked to: Sagittarius Arm
linked to: Sagittarius Arm
linked to: Sagittarius Arm