Sh 2-275
E450953
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.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Sh 2-275 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4531463 — 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 2-275 Context triple: [Rosette Nebula, hasAlternativeName, Sh 2-275]
-
A.
SH 21-76
SH 21-76 is the U.S. Army’s Ranger Handbook, a field manual that outlines the doctrine, tactics, techniques, and procedures for Army Rangers.
-
B.
SH 45
SH 45 is a state highway in Colorado that serves as a key north–south route in the city of Pueblo.
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C.
SH8
SH8 is a scenic coastal highway in southern Albania that winds along the Albanian Riviera, connecting key seaside towns and offering views of the Ionian Sea.
-
D.
S-23
S-23 is an International Hydrographic Organization publication that standardizes the naming and limits of the world’s oceans and seas.
-
E.
Shinsen
Shinsen is a neighborhood in Tokyo’s Shibuya ward known for its residential streets, local eateries, and proximity to the bustling Shibuya Station area.
- 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 2-275 Target entity description: 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.
-
A.
SH 21-76
SH 21-76 is the U.S. Army’s Ranger Handbook, a field manual that outlines the doctrine, tactics, techniques, and procedures for Army Rangers.
-
B.
SH 45
SH 45 is a state highway in Colorado that serves as a key north–south route in the city of Pueblo.
-
C.
SH8
SH8 is a scenic coastal highway in southern Albania that winds along the Albanian Riviera, connecting key seaside towns and offering views of the Ionian Sea.
-
D.
S-23
S-23 is an International Hydrographic Organization publication that standardizes the naming and limits of the world’s oceans and seas.
-
E.
Shinsen
Shinsen is a neighborhood in Tokyo’s Shibuya ward known for its residential streets, local eateries, and proximity to the bustling Shibuya Station area.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
H II region
ⓘ
deep-sky object ⓘ emission nebula ⓘ star-forming region ⓘ |
| alsoKnownAs |
Rosette Nebula
NERFINISHED
ⓘ
Sh2-275 NERFINISHED ⓘ Sharpless 2-275 NERFINISHED ⓘ |
| associatedWith | NGC 2244 NERFINISHED ⓘ |
| contains |
Bok globules
NERFINISHED
ⓘ
molecular clouds ⓘ open cluster NGC 2244 NERFINISHED ⓘ protostars ⓘ young stellar objects ⓘ |
| discoveredBy | John Herschel (nebular region around NGC 2244) NERFINISHED ⓘ |
| excitedBy | young massive stars ⓘ |
| hasAge | a few million years (ionizing cluster NGC 2244) ⓘ |
| hasAlternativeDesignation |
Caldwell 49
NERFINISHED
ⓘ
LBN 948 NERFINISHED ⓘ SNR G206.3-02.1 (historical association, not a supernova remnant) ⓘ |
| hasAngularSize | about 1.3 degrees ⓘ |
| hasApparentMagnitude | 9.0 ⓘ |
| hasAppearance | rosette-like ⓘ |
| hasCatalogNumber | Sh 2-275 NERFINISHED ⓘ |
| hasCentralRegion | open cluster NGC 2244 NERFINISHED ⓘ |
| hasColor | reddish ⓘ |
| hasDeclination | +04° 57′ ⓘ |
| hasDistanceFromEarth |
about 1.6 kiloparsecs
ⓘ
about 5200 light-years ⓘ |
| hasDominantEmissionLine |
H-alpha
ⓘ
[O III] ⓘ [S II] ⓘ |
| hasMorphology | large circular nebula ⓘ |
| hasRightAscension | 06h 31m ⓘ |
| ionizedBy | OB stars in NGC 2244 ⓘ |
| isCataloguedIn |
Sharpless 2 catalog
NERFINISHED
ⓘ
Sharpless catalog NERFINISHED ⓘ |
| isPopularTargetFor |
amateur astronomers
ⓘ
astrophotographers ⓘ |
| isRegionOf | active star formation ⓘ |
| locatedIn | Orion Arm NERFINISHED ⓘ |
| locatedInConstellation | Monoceros NERFINISHED ⓘ |
| observedIn |
infrared wavelengths
ⓘ
optical wavelengths ⓘ radio wavelengths ⓘ |
| partOf | Milky Way NERFINISHED ⓘ |
| visibleIn |
Northern Hemisphere winter sky
ⓘ
Southern Hemisphere summer sky ⓘ |
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 2-275 Description of subject: 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.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.