Melotte 15
E523599
Melotte 15 is a young, massive open star cluster embedded within the Heart Nebula, whose hot, luminous stars sculpt the surrounding interstellar gas and dust.
All labels observed (4)
| Label | Occurrences |
|---|---|
| Melotte 15 canonical | 4 |
| open cluster Melotte 15 | 1 |
| star cluster Melotte 15 | 1 |
| young star cluster Melotte 15 | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5466978 — 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: Melotte 15 Context triple: [IC 1805, containsOpenCluster, Melotte 15]
-
A.
Melotte 22
Melotte 22 is an open star cluster in the constellation Taurus, more commonly known as the Pleiades or Seven Sisters, famed for its bright, blue-hot stars and visibility to the naked eye.
-
B.
Melotte 13 and Melotte 14
Melotte 13 and Melotte 14 are the two open star clusters in the constellation Perseus collectively known as the Double Cluster, notable for their rich, young stellar populations and striking appearance in the night sky.
-
C.
Trumpler 15
Trumpler 15 is a young, compact open star cluster located within the Carina Nebula, notable for its massive, hot stars and role in the region’s intense stellar activity.
-
D.
Messier 17
Messier 17, also known as the Omega or Swan Nebula, is a bright star-forming emission nebula located in the constellation Sagittarius.
-
E.
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.
- 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: Melotte 15 Target entity description: Melotte 15 is a young, massive open star cluster embedded within the Heart Nebula, whose hot, luminous stars sculpt the surrounding interstellar gas and dust.
-
A.
Melotte 22
Melotte 22 is an open star cluster in the constellation Taurus, more commonly known as the Pleiades or Seven Sisters, famed for its bright, blue-hot stars and visibility to the naked eye.
-
B.
Melotte 13 and Melotte 14
Melotte 13 and Melotte 14 are the two open star clusters in the constellation Perseus collectively known as the Double Cluster, notable for their rich, young stellar populations and striking appearance in the night sky.
-
C.
Trumpler 15
Trumpler 15 is a young, compact open star cluster located within the Carina Nebula, notable for its massive, hot stars and role in the region’s intense stellar activity.
-
D.
Messier 17
Messier 17, also known as the Omega or Swan Nebula, is a bright star-forming emission nebula located in the constellation Sagittarius.
-
E.
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.
- F. None of above. chosen
Statements (44)
| Predicate | Object |
|---|---|
| instanceOf |
open star cluster
ⓘ
young star cluster ⓘ |
| affects |
surrounding interstellar dust
ⓘ
surrounding interstellar gas ⓘ |
| bestSeenFrom | Northern Hemisphere ⓘ |
| contains |
B-type stars
ⓘ
O-type stars ⓘ |
| contributesTo | overall luminosity of Heart Nebula ⓘ |
| creates |
ionization fronts in Heart Nebula
ⓘ
pillars of gas and dust ⓘ |
| declination | +61° (approximate) ⓘ |
| discoveredBy | Philippe Melotte ⓘ |
| distanceFromEarth |
about 2,300 parsecs
ⓘ
about 7,500 light-years ⓘ |
| embeddedIn |
interstellar dust
ⓘ
interstellar gas ⓘ |
| hasApproximateAge | a few million years ⓘ |
| hasApproximateAngularSize | a few arcminutes ⓘ |
| hasAstrophysicalImportance |
example of feedback from massive stars
ⓘ
laboratory for massive star formation ⓘ |
| hasCatalogDesignation | Melotte 15 ⓘ |
| hasEnvironment | H II region ⓘ |
| hasNotableFeature |
bright central cluster in Heart Nebula
ⓘ
complex dark dust lanes nearby ⓘ |
| hasPhysicalProcess |
photoionization of surrounding gas
ⓘ
stellar winds ⓘ |
| hasStarPopulation |
hot stars
ⓘ
luminous stars ⓘ massive stars ⓘ |
| ionizes | surrounding hydrogen gas ⓘ |
| isSiteOf | ongoing star formation ⓘ |
| locatedIn |
Heart Nebula
ⓘ
IC 1805 ⓘ |
| locatedInConstellation | Cassiopeia ⓘ |
| locatedInGalacticRegion | Perseus Arm ⓘ |
| locatedInGalaxy | Milky Way ⓘ |
| memberOf |
Melotte catalog
ⓘ
linked to:
Melotte Catalogue of Open Star Clusters
|
| observedIn |
infrared wavelengths
ⓘ
optical wavelengths ⓘ |
| partOf |
Heart Nebula star-forming region
ⓘ
linked to:
Heart Nebula
|
| rightAscension | 02h 32m (approximate) ⓘ |
| sculpts |
Heart Nebula dust structures
ⓘ
Heart Nebula gas structures ⓘ |
| visibleIn | amateur telescopes under dark skies ⓘ |
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: Melotte 15 Description of subject: Melotte 15 is a young, massive open star cluster embedded within the Heart Nebula, whose hot, luminous stars sculpt the surrounding interstellar gas and dust.
Referenced by (7)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
IC 1805 (Heart Nebula)
linked to: Melotte 15
subject linked to:
open cluster IC 1805
linked to: Melotte 15