Jewel Box cluster

E206924

deep-sky object open star cluster

The Jewel Box cluster is a bright and colorful open star cluster in the constellation Crux, renowned for its striking mix of blue and red stars visible even in small telescopes.

Try in SPARQL Jump to: Surface forms Disambiguation Statements Elicitation Referenced by

All labels observed (4)

Label	Occurrences
Kappa Crucis Cluster	2
Jewel Box Cluster	1
Jewel Box cluster canonical	1
NGC 4755	1

How this entity was disambiguated

This entity first appeared as the object of triple T1840799 — 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: Jewel Box cluster
Context triple: [Southern Cross, hasNotableDeepSkyObject, Jewel Box cluster]

A. Messier 17
Messier 17, also known as the Omega or Swan Nebula, is a bright star-forming emission nebula located in the constellation Sagittarius.
B. Rosette Nebula
The Rosette Nebula is a large, circular emission nebula and active star-forming region located in the Milky Way, notable for its striking rose-like appearance in astrophotography.
C. 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.
D. NGC 346
NGC 346 is a prominent star-forming region and open cluster in the Small Magellanic Cloud, known for its young, massive stars and complex nebular structures.
E. Carina Nebula
The Carina Nebula is a vast, active star-forming region in the Milky Way known for its towering gas and dust pillars and dramatic young stellar clusters.
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: Jewel Box cluster
Target entity description: The Jewel Box cluster is a bright and colorful open star cluster in the constellation Crux, renowned for its striking mix of blue and red stars visible even in small telescopes.

A. Messier 17
Messier 17, also known as the Omega or Swan Nebula, is a bright star-forming emission nebula located in the constellation Sagittarius.
B. Rosette Nebula
The Rosette Nebula is a large, circular emission nebula and active star-forming region located in the Milky Way, notable for its striking rose-like appearance in astrophotography.
C. 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.
D. NGC 346
NGC 346 is a prominent star-forming region and open cluster in the Small Magellanic Cloud, known for its young, massive stars and complex nebular structures.
E. Carina Nebula
The Carina Nebula is a vast, active star-forming region in the Milky Way known for its towering gas and dust pillars and dramatic young stellar clusters.
F. None of above. chosen

Statements (47)

Predicate	Object
instanceOf	deep-sky object ⓘ open star cluster ⓘ
age	approximately 10 million years ⓘ
alsoKnownAs	Caldwell 94 ⓘ Jewel Box cluster ⓘ surface form: Kappa Crucis Cluster NGC 4755 ⓘ
angularSize	10 arcminutes ⓘ
apparentMagnitudeV	4.2 ⓘ
appearsNear	Crux constellation ⓘ surface form: Southern Cross asterism
approximateStarCount	about 100 stars ⓘ
bestSeenFromHemisphere	Southern Hemisphere ⓘ
catalogDesignation	Caldwell 94 ⓘ Jewel Box cluster self-linksurface differs ⓘ surface form: Kappa Crucis Cluster NGC 4755 ⓘ
classification	Trumpler II 3 m ⓘ
contains	blue supergiant stars ⓘ red supergiant stars ⓘ
containsBrightStar	Kappa Crucis ⓘ
containsNotableStar	red supergiant V399 Carinae (within field, often associated observationally) ⓘ
declination	−60° 22′ ⓘ
discoveredBy	Nicolas de Lacaille ⓘ surface form: Nicolas-Louis de Lacaille
discoveryYear	1751 ⓘ
distanceFromEarth	approximately 1,950 parsecs ⓘ approximately 6,400 light-years ⓘ
dominantColor	blue ⓘ
galacticLatitude	−0.1° (approximate) ⓘ
galacticLocation	Milky Way ⓘ
galacticLongitude	303.2° (approximate) ⓘ
hasColorContrastDescribedAs	a casket of variously colored precious stones ⓘ
hasColorIndexRange	from very blue to very red ⓘ
HerschelDescription	a casket of variously colored precious stones ⓘ
isTargetFor	amateur astronomers ⓘ astrophotographers ⓘ
locatedIn	southern Milky Way star fields ⓘ
locatedInConstellation	Crux ⓘ
notableFor	striking color contrast of blue and red stars ⓘ
notableObserver	John Herschel ⓘ
observationalSeason	autumn and winter in Southern Hemisphere ⓘ
observedIn	visible light ⓘ
partOf	Crux region of the Milky Way ⓘ
rightAscension	12h 53m ⓘ
spectralTypesPresent	B-type stars ⓘ K-type stars ⓘ M-type stars ⓘ O-type stars ⓘ
stellarPopulation	young massive stars ⓘ
visibleWith	small telescope ⓘ

How these facts were elicited

Referenced by (5)

Full triples — surface form annotated when it differs from this entity's canonical label.

Southern Cross → hasNotableDeepSkyObject → Jewel Box cluster ⓘ

this entity surface form: NGC 4755

Crux → containsDeepSkyObject → Jewel Box cluster ⓘ

this entity surface form: Jewel Box Cluster

Jewel Box cluster → alsoKnownAs → Jewel Box cluster ⓘ

this entity surface form: Kappa Crucis Cluster

Jewel Box cluster → catalogDesignation → Jewel Box cluster self-linksurface differs ⓘ