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Omega Centauri: History, Observation history & Properties
Omega Centauri (ω Cen, NGC 5139, or Caldwell 80) is a globular cluster in the constellation of Centaurus that was first identified as a non-stellar object by Edmond Halley in 1677. Located at a distance of 17,090 light-years (5,240 parsecs), it is the largest known globular cluster in the Milky Way at a diameter of roughly 150 light-years. It is…
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Omega Centauri topic overview
The analysis highlights History, Observation history and Properties as prominent areas in the source structure around Omega Centauri.
Related topics
37
Source areas
4
Connected nodes
41
Extracted relationships
106
Concept neighborhoods
16
Bridge connections
41
What this topic covers Research coverage
Source areas are shown by the number of related topics found in each part of the analysis. Use smaller areas too: they can reveal specialized angles and content gaps.
Properties · 15 topics
Observation history · 11 topics
Overview · 10 topics
In fiction · 1 topics
Smaller areas are not necessarily less important. They contain fewer connections in this analysis and can be useful for finding specialized angles or coverage gaps.
Key facts & relationships
High-confidence facts extracted from structured source data. Use them as anchors for further research.
Apparent dimensions (V)
36′.3
Apparent magnitude (V)
3.9
Class
VIII
Constellation
Centaurus
Declination
−47° 28′ 46.1″
Distance
15.8 ± 1.1 kly (4.84 ± 0.34 kpc)
Explore all related topics Closing gaps
A structured outline of related entities, concepts and subtopics. Open any item to build a new map centered on it.
Browse the complete topic structure, not only the most central items. Less prominent entities and concepts can reveal missing angles, specialized context and useful research gaps. Each item opens a new analysis centered on that subject.
Deeper signals for content research, entity SEO and topical coverage. The plain-language headings explain what each technical view is useful for.
How Omega Centauri connects Entity context
Entity context groups extracted connections by relationship type. Counts show recurrence in the analyzed source; the examples are research signals, not claims about importance.
The extracted context around Omega Centauri shows recurring relationship patterns in the source. For example, Omega Centauri → AD, Almagest, Around, Cheseaux, Edmond Halley, English, French, German, Greco-Roman, Halley, In, It, James Dunlop, Jean-Philippe, Johann Bayer, Lacaille, Philosophical Transactions, Ptolemy, Ptolemy's, Quae Another extracted example is Omega Centauri → Archived, Articles, Astrophoto, Centauri, Constellation GuideOmega Centauri, DSS2, Dwarf Galaxy, ESA/Hubble, Former Core, Galactic Globular Clusters Database, GALEX, Hubblesite, Hydrogen, IRAS, NGC, Omega Centauri Fact Sheet, Peering, Proud Cluster, Sad Remnant, SDSS. Use these groups to spot repeated connection types before inspecting the individual relationships.
Omega Centauri
Top relations
related to history· 27
Omega Centauri → AD, Almagest, Around, Cheseaux, Edmond Halley, English, French, German, Greco-Roman, Halley, In, It, James Dunlop, Jean-Philippe, Johann Bayer, Lacaille, Philosophical Transactions, Ptolemy, Ptolemy's, Quae
Relationships are represented as Subject → Predicate → Object triples. Confidence describes extraction strength, not the real-world importance of a relationship; lower-confidence rows may be contextual rather than explicit.
TTTA extracted 106 structured relationships around Omega Centauri. Examples in this analysis include Omega Centauri → Apparent dimensions (V) → 36′.3 and Omega Centauri → Apparent magnitude (V) → 3.9. The table shows each extracted connection, where it came from and its confidence.
Subject
Predicate
Object
Confidence
Src
Omega Centauri
Apparent dimensions (V)
36′.3
1.00
infobox
Omega Centauri
Apparent magnitude (V)
3.9
1.00
infobox
Omega Centauri
Class
VIII
1.00
infobox
Omega Centauri
Constellation
Centaurus
1.00
infobox
Omega Centauri
Declination
−47° 28′ 46.1″
1.00
infobox
Omega Centauri
Distance
15.8 ± 1.1 kly (4.84 ± 0.34 kpc)
1.00
infobox
Omega Centauri
Estimated age
11.52 Gyr
1.00
infobox
Omega Centauri
Mass
(4.05±0.1)×106 M☉
1.00
infobox
Omega Centauri
Metallicity
[Fe/H] = –1.35 dex
1.00
infobox
Omega Centauri
Other designations
NGC 5139, GCl 24, ω Centauri, Caldwell 80, Mel 118
1.00
infobox
Omega Centauri
Radius
86 ± 6 ly
1.00
infobox
Omega Centauri
Right ascension
13h 26m 47.28s
1.00
infobox
Omega Centauri
is a
core of a dwarf galaxy that was disrupted and absorbed by the Milky Way
0.90
text
No triples extracted yet.
Related concept clusters Concept neighborhoods
Concept neighborhoods group terms that sit near one another in the extracted graph. They are useful for discovering adjacent language and context, but proximity does not by itself imply a factual relationship.
The concept neighborhoods around Omega Centauri bring nearby vocabulary together. In this analysis, examples include Omega, Globular and Galaxy. Use the clusters to find adjacent concepts and terminology that may deserve separate research.
Omega Centauri
Omega
Globular
Galaxy
Dwarf
Clusters
Core
Disrupted
Way
Cluster
Stars
Constellation
Ngc
omega centauri
Omega
Globular
Galaxy
Dwarf
Clusters
Core
Disrupted
Way
Cluster
Stars
Constellation
Ngc
globular cluster
Clusters
Cluster
Globular
Galaxy
Omega
Dwarf
Mass
Milky
Way
Constellation
Distance
Disrupted
milky way
Milky
Way
Million
Masses
Solar
Globular
Known
Largest
Ii
Omega
Cluster
Stars
dwarf galaxy
Galaxy
Globular
Star
Ii
Omega
List
Ngc
Black
Hole
Stars
Milky
Way
intermediate-mass black hole
Hole
Intermediate-mass
Evidence
Center
Found
Core
Distance
Disrupted
Masses
Object
Solar
Mass
andromeda galaxy
Globular
Ii
Star
Omega
List
Ngc
Milky
Way
Stars
Black
Hole
Also
center of mass
Found
Intermediate-mass
Masses
Solar
Hole
Core
Black
Stars
Also
Evidence
Million
Omega
Connections between topic areas Semantic bridges
Semantic bridges connect parts of the graph that would otherwise be more separate. A bridge is a structural signal in this analysis, not a claim that the two topic areas are equivalent.
For Omega Centauri, one of the stronger structural bridges in this analysis connects Omega Centauri with Properties. Bridges highlight paths between different parts of the map and can reveal research angles that are easy to miss in a flat list.
Number of nodes, edges, triples, density and central hubs. Use it to gauge the size and connectivity of the map.
Omega Centauri
Nodes42
Edges41
Triples106
Avg. degree1.95
Density0.047619
Components1
Source & methodology
TTTA analyzes the structure around Omega Centauri to surface related topics, entities, relationships, concept neighborhoods and bridge connections. Use the map to explore areas such as History, Observation history & Properties, including less central topics that may reveal useful research gaps. Automatically extracted connections are research leads rather than rewritten encyclopedia content.
