Double Cluster

E100905

Milky Way star cluster deep-sky object open star cluster pair

The Double Cluster is a striking pair of young, massive open star clusters in the constellation Perseus, often observed together as a rich, densely packed stellar grouping in the Milky Way.

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

All labels observed (2)

Label	Occurrences
Double Cluster canonical	3
Double Cluster in Perseus	2

How this entity was disambiguated

This entity first appeared as the object of triple T868804 — 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: Double Cluster
Context triple: [Orion Arm, contains, Double Cluster]

A. Stephan's Quintet
Stephan's Quintet is a visually striking compact group of five galaxies in the constellation Pegasus, famous for their complex gravitational interactions and dramatic appearance in astronomical imagery.
B. Pleiades
The Pleiades are a famous open star cluster in the constellation Taurus, often known as the Seven Sisters in Greek mythology.
C. Magellanic Clouds
The Magellanic Clouds are two irregular dwarf galaxies orbiting the Milky Way, prominently visible from the Southern Hemisphere as hazy patches in the night sky.
D. 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.
E. globular star cluster M13
Globular star cluster M13, also known as the Great Hercules Cluster, is a dense, bright spherical collection of hundreds of thousands of ancient stars located in the constellation Hercules and is one of the most prominent globular clusters visible from Earth.
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: Double Cluster
Target entity description: The Double Cluster is a striking pair of young, massive open star clusters in the constellation Perseus, often observed together as a rich, densely packed stellar grouping in the Milky Way.

A. Stephan's Quintet
Stephan's Quintet is a visually striking compact group of five galaxies in the constellation Pegasus, famous for their complex gravitational interactions and dramatic appearance in astronomical imagery.
B. Pleiades
The Pleiades are a famous open star cluster in the constellation Taurus, often known as the Seven Sisters in Greek mythology.
C. Magellanic Clouds
The Magellanic Clouds are two irregular dwarf galaxies orbiting the Milky Way, prominently visible from the Southern Hemisphere as hazy patches in the night sky.
D. 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.
E. globular star cluster M13
Globular star cluster M13, also known as the Great Hercules Cluster, is a dense, bright spherical collection of hundreds of thousands of ancient stars located in the constellation Hercules and is one of the most prominent globular clusters visible from Earth.
F. None of above. chosen

Statements (47)

Predicate	Object
instanceOf	Milky Way star cluster ⓘ deep-sky object ⓘ open star cluster pair ⓘ
age	~12.8 million years ⓘ ~14 million years ⓘ
angularSize	~60 arcminutes ⓘ
apparentMagnitudeV	3.7 ⓘ
appearsAs	nebulous patch to naked eye ⓘ
bestSeenIn	autumn ⓘ winter ⓘ
catalogDesignation	Caldwell 14 ⓘ Melotte 13 and Melotte 14 ⓘ h Persei and χ Persei ⓘ linked to: Perseus constellation
containsStarType	B-type stars ⓘ O-type stars ⓘ red supergiants ⓘ
declination	+57° 08′ ⓘ
distanceFromEarth	~2,300 parsecs ⓘ ~7,500 light-years ⓘ
hasApproximateStarCount	several hundred stars per cluster ⓘ
hasCommonName	Double Cluster in Perseus ⓘ linked to: Double Cluster
hasComponent	NGC 869 ⓘ NGC 884 ⓘ
hasDiscoveryStatus	known since antiquity ⓘ
hasGalacticLatitude	+4.3 degrees (approximate) ⓘ
hasGalacticLongitude	134.6 degrees (approximate) ⓘ
hasIntegratedSpectralType	B-type dominated ⓘ
hasSpectralDominance	blue-white ⓘ
isMassiveCluster	true ⓘ
isNear	constellation Cassiopeia ⓘ linked to: Cassiopeia
isPartOf	Perseus constellation region ⓘ linked to: Perseus constellation
isPopularTargetFor	amateur astronomers ⓘ astrophotographers ⓘ
isRichCluster	true ⓘ
isUsedForStudyOf	massive star formation ⓘ open cluster dynamics ⓘ stellar evolution ⓘ
isVisibleFrom	Northern Hemisphere ⓘ
isYoungCluster	true ⓘ
liesInDirectionOf	Perseus OB association ⓘ linked to: Perseus OB2 association
locatedIn	Perseus Arm ⓘ
locatedInConstellation	Perseus ⓘ
locatedInGalaxy	Milky Way ⓘ
observedWith	binoculars ⓘ small telescopes ⓘ
rightAscension	02h 19m ⓘ
visibleToNakedEye	true ⓘ

How these facts were elicited

Referenced by (5)

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

Orion Arm → contains → Double Cluster ⓘ

Double Cluster → hasCommonName → Double Cluster in Perseus ⓘ

linked to: Double Cluster

Perseus constellation → contains → Double Cluster ⓘ

Perseus constellation → notableFor → Double Cluster ⓘ

Northern Celestial Hemisphere → contains → Double Cluster in Perseus ⓘ