Lynds Dark Nebula 1634
E460828
Lynds Dark Nebula 1634 is a dense, star-forming dark cloud of gas and dust located within the Orion region, visible primarily by the starlight it obscures.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Lynds Dark Nebula 1634 canonical | 1 |
| Lynds Dark Nebula 1647 | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4617576 — 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: Lynds Dark Nebula 1634 Context triple: [Orion Molecular Cloud Complex, contains, Lynds Dark Nebula 1634]
-
A.
Merope Nebula
The Merope Nebula is a bright reflection nebula in the Pleiades star cluster, illuminated by and surrounding the hot blue star Merope in the constellation Taurus.
-
B.
Caldwell 14
Caldwell 14 is an open star cluster in the constellation Perseus, forming part of the famous Double Cluster visible to the naked eye in dark skies.
-
C.
Tarantula Nebula
The Tarantula Nebula is an enormous, extremely active star-forming region in the Large Magellanic Cloud and one of the most luminous nebulae known in the Local Group of galaxies.
-
D.
Trifid Nebula
The Trifid Nebula is a bright, star-forming emission and reflection nebula in the constellation Sagittarius, notable for its three-lobed appearance created by dark dust lanes.
-
E.
Sagittarius Star Cloud
The Sagittarius Star Cloud is a bright, densely populated region of the Milky Way rich in stars and nebulae, prominently visible in the constellation Sagittarius.
- 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: Lynds Dark Nebula 1634 Target entity description: Lynds Dark Nebula 1634 is a dense, star-forming dark cloud of gas and dust located within the Orion region, visible primarily by the starlight it obscures.
-
A.
Merope Nebula
The Merope Nebula is a bright reflection nebula in the Pleiades star cluster, illuminated by and surrounding the hot blue star Merope in the constellation Taurus.
-
B.
Caldwell 14
Caldwell 14 is an open star cluster in the constellation Perseus, forming part of the famous Double Cluster visible to the naked eye in dark skies.
-
C.
Tarantula Nebula
The Tarantula Nebula is an enormous, extremely active star-forming region in the Large Magellanic Cloud and one of the most luminous nebulae known in the Local Group of galaxies.
-
D.
Trifid Nebula
The Trifid Nebula is a bright, star-forming emission and reflection nebula in the constellation Sagittarius, notable for its three-lobed appearance created by dark dust lanes.
-
E.
Sagittarius Star Cloud
The Sagittarius Star Cloud is a bright, densely populated region of the Milky Way rich in stars and nebulae, prominently visible in the constellation Sagittarius.
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf |
dark nebula
ⓘ
molecular cloud ⓘ star-forming region ⓘ |
| associatedWith |
embedded young stellar objects
ⓘ
star formation ⓘ |
| catalogCode | LDN 1634 ⓘ |
| contains |
dense gas
ⓘ
interstellar dust ⓘ |
| coordinateSystem | equatorial coordinates ⓘ |
| hasComponent |
carbon monoxide gas
ⓘ
molecular hydrogen ⓘ |
| hasEnvironment | interstellar medium of the Milky Way ⓘ |
| hasObservationFeature | appears as a dark patch against brighter background ⓘ |
| hasPhysicalState | cold gas and dust ⓘ |
| hasProcess |
formation of protostars
ⓘ
gravitational collapse of dense cores ⓘ |
| hasProperty |
cold interstellar medium
ⓘ
high visual extinction ⓘ obscures background starlight ⓘ supports low-mass star formation ⓘ |
| locatedInConstellation | Orion ⓘ |
| locatedInGalaxy | Milky Way ⓘ |
| memberOf |
Orion molecular cloud complex
ⓘ
linked to:
Orion Molecular Cloud Complex
|
| namedAfter | Beverly T. Lynds ⓘ |
| observedIn |
infrared wavelengths
ⓘ
optical wavelengths ⓘ radio wavelengths ⓘ |
| partOf |
Lynds Catalogue of Dark Nebulae
ⓘ
linked to:
Lynds Dark Nebula catalog
|
| survey |
Palomar Sky Survey
ⓘ
linked to:
Palomar Observatory Sky Survey
|
| visibility | visible by the starlight it obscures ⓘ |
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: Lynds Dark Nebula 1634 Description of subject: Lynds Dark Nebula 1634 is a dense, star-forming dark cloud of gas and dust located within the Orion region, visible primarily by the starlight it obscures.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Lynds Dark Nebula 1634