Sh 2-25
E514346
Sh 2-25 is an emission nebula in the constellation Sagittarius, better known as part of the bright star-forming region Messier 8 (the Lagoon Nebula).
All labels observed (1)
| Label | Occurrences |
|---|---|
| Sh 2-25 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5363361 — 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: Sh 2-25 Context triple: [Messier 8, hasAlternativeDesignation, Sh 2-25]
-
A.
Sh 2-275
Sh 2-275 is a large, circular emission nebula in the constellation Monoceros, notable for its active star-forming region and striking rosette-like appearance.
-
B.
SH 12
SH 12 is a designation for Texas State Highway 12, a state-maintained roadway within the Texas highway system.
-
C.
SH 120
SH 120 is a short state highway in Colorado that connects U.S. Route 50 to the Fremont Correctional Facility area near Penrose.
-
D.
SH 10
SH 10 is a state highway in Colorado that runs east–west across the southern part of the state, connecting the cities of Walsenburg and La Junta.
-
E.
SH 45
SH 45 is a state highway in Colorado that serves as a key north–south route in the city of Pueblo.
- 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: Sh 2-25 Target entity description: Sh 2-25 is an emission nebula in the constellation Sagittarius, better known as part of the bright star-forming region Messier 8 (the Lagoon Nebula).
-
A.
Sh 2-275
Sh 2-275 is a large, circular emission nebula in the constellation Monoceros, notable for its active star-forming region and striking rosette-like appearance.
-
B.
SH 12
SH 12 is a designation for Texas State Highway 12, a state-maintained roadway within the Texas highway system.
-
C.
SH 120
SH 120 is a short state highway in Colorado that connects U.S. Route 50 to the Fremont Correctional Facility area near Penrose.
-
D.
SH 10
SH 10 is a state highway in Colorado that runs east–west across the southern part of the state, connecting the cities of Walsenburg and La Junta.
-
E.
SH 45
SH 45 is a state highway in Colorado that serves as a key north–south route in the city of Pueblo.
- F. None of above. chosen
Statements (31)
| Predicate | Object |
|---|---|
| instanceOf |
H II region
ⓘ
emission nebula ⓘ |
| associatedWith |
massive star formation
ⓘ
open star cluster NGC 6530 ⓘ
linked to:
Open cluster NGC 6530
star-forming region ⓘ |
| belongsTo | Milky Way ⓘ |
| catalog |
Sharpless catalog of H II regions
ⓘ
linked to:
Sharpless catalogue
|
| contains | ionized hydrogen gas ⓘ |
| dominantEmissionLine | Hydrogen-alpha ⓘ |
| environment | giant molecular cloud region ⓘ |
| galacticObjectType | nebula ⓘ |
| hasAstrophysicalSignificance | site of ongoing star formation ⓘ |
| hasPhysicalProcess |
photoionization
ⓘ
radiation from young massive stars ⓘ stellar wind interaction ⓘ |
| isComponentOf | large star-forming complex in Sagittarius ⓘ |
| isObservedBy |
amateur astronomers
ⓘ
professional observatories ⓘ |
| isPartOfLargerStructure |
Lagoon Nebula complex
ⓘ
linked to:
Lagoon Nebula
|
| isRegionOf |
interstellar dust
ⓘ
interstellar gas ⓘ |
| locatedIn |
Sagittarius Arm of the Milky Way
ⓘ
linked to:
Sagittarius Arm
|
| locatedInConstellation | Sagittarius ⓘ |
| nebulaType | bright nebula ⓘ |
| observedIn | Sharpless 1959 survey ⓘ |
| otherDesignation |
Sh2-25
ⓘ
Sharpless 25 ⓘ |
| partOf |
Lagoon Nebula
ⓘ
Messier 8 ⓘ |
| skyLocation | constellation Sagittarius ⓘ |
| visibleIn | optical wavelengths ⓘ |
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: Sh 2-25 Description of subject: Sh 2-25 is an emission nebula in the constellation Sagittarius, better known as part of the bright star-forming region Messier 8 (the Lagoon Nebula).
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.