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Centaurus A: History, Observational history & Novae and supernovae

Centaurus A (also known as NGC 5128 or Caldwell 77) is a galaxy in the constellation of Centaurus. It was discovered in 1826 by Scottish astronomer James Dunlop from his home in Parramatta, in New South Wales, Australia. There is considerable debate in the literature regarding the galaxy's fundamental properties such as its Hubble type (lenticular galaxy…

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Centaurus A topic overview

The analysis highlights History, Observational history and Novae and supernovae as prominent areas in the source structure around Centaurus A.

Related topics
75
Source areas
9
Connected nodes
84
Extracted relationships
112
Concept neighborhoods
37
Bridge connections
84

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.

Overview · 22 topics
Observational history · 16 topics
Novae and supernovae · 13 topics
Gallery · 7 topics
Distance · 5 topics
Morphology · 5 topics
Nearby galaxies and galaxy group information · 5 topics
Observations · 1 topics
Visibility · 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 magnitude (V)
6.84
Apparent size (V)
25.7′ × 20.0′
Constellation
Centaurus
Declination
−43° 01′ 08.806″
Distance
11–13 Mly (3–5 Mpc)
Heliocentric radial velocity
547 ± 5 km/s

Explore all related topics Closing gaps

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.

Overview

Observational history

Morphology

Novae and supernovae

Distance

Nearby galaxies and galaxy group information

Observations

Visibility

Gallery

Advanced semantic analysis

Deeper signals for content research, entity SEO and topical coverage. The plain-language headings explain what each technical view is useful for.

How Centaurus A connects Entity context

The extracted context around Centaurus A shows recurring relationship patterns in the source. For example, Centaurus A → Active Galaxy, Archived, Articles, Astrophoto, Centaurus, Centaurus ANASA's APOD, Centaurus ANGC, Constellation Guide, Deep Sky Observer's Companion, DOCdb, DSS2, GALEX, High-resolution, Hubble, Hydrogen, IRAS, July, March, May, NASA's APOD Another extracted example is Centaurus A → Centaurus, Centaurus A/M83 Group, However, In, M83, Messier, Some, Southern Pinwheel Galaxy, The, The Centaurus A/M83 Group, These, VHH81-01, Virgo Supercluster. Use these groups to spot repeated connection types before inspecting the individual relationships.

Centaurus A

Top relations

related to External links · 32
Centaurus A → Active Galaxy, Archived, Articles, Astrophoto, Centaurus, Centaurus ANASA's APOD, Centaurus ANGC, Constellation Guide, Deep Sky Observer's Companion, DOCdb, DSS2, GALEX, High-resolution, Hubble, Hydrogen, IRAS, July, March, May, NASA's APOD
related to Nearby galaxies and galaxy group information · 13
Centaurus A → Centaurus, Centaurus A/M83 Group, However, In, M83, Messier, Some, Southern Pinwheel Galaxy, The, The Centaurus A/M83 Group, These, VHH81-01, Virgo Supercluster
related to Gallery · 11
Centaurus A → ALMAThe, Cen, Centaurus, Central, False-colour, Hubble's, Image, Spitzer IR, Wide, X-ray, X-rays
related to Sources · 11
Centaurus A → Album Centaurus, Black Hole, Chandra X-Ray Observatory Photo, Feed, How, Hubble Provides Multiple Views, Jet, March, Press, Space Telescope Science Institute, STScI
related to Distance · 8
Centaurus A → Centaurus, Classical Cepheids, Distance, Local Group, Mira, Mpc, The, Type II Cepheids
related to Novae and supernovae · 8
Centaurus A → Centaurus, It, May, Robert Evans, SN, The, Two, Type Ia
related to Morphology · 7
Centaurus A → As, Centaurus, Earth, Halton Arp's Atlas, John Herschel, Peculiar Galaxies, The
related to Visibility · 5
Centaurus A → Because, Centaurus, Claims, Omega Centauri, The
related to Radio waves · 3
Centaurus A → Centaurus, Event Horizon Telescope, In July
Apparent magnitude (V) · 1
Centaurus A → 6.84

Important terminology

Use these terms to understand the vocabulary surrounding the topic, not as a checklist for keyword stuffing.

Important terminology

galaxy centaurus radio x-ray type galaxies also discovered jet ngc elliptical dust 5128 distance observatory black hole one large million

Centaurus A relationships Subject–Predicate–Object triples

TTTA extracted 112 structured relationships around Centaurus A. Examples in this analysis include Centaurus A → Apparent magnitude (V) → 6.84 and Centaurus A → Apparent size (V) → 25.7′ × 20.0′. The table shows each extracted connection, where it came from and its confidence.

SubjectPredicateObjectConfidenceSrc
Centaurus AApparent magnitude (V)6.841.00infobox
Centaurus AApparent size (V)25.7′ × 20.0′1.00infobox
Centaurus AConstellationCentaurus1.00infobox
Centaurus ADeclination−43° 01′ 08.806″1.00infobox
Centaurus ADistance11–13 Mly (3–5 Mpc)1.00infobox
Centaurus AHeliocentric radial velocity547 ± 5 km/s1.00infobox
Centaurus ANotable featuresClosest radio galaxy; closest BL Lacertae object; unusual dust lane1.00infobox
Centaurus ARedshift0.001825±0.00001671.00infobox
Centaurus ARight ascension13h 25m 27.6150s1.00infobox
Centaurus ASize~123,100 ly (37.74 kpc) (estimated)1.00infobox
Centaurus ATypeS0 pec or Ep1.00infobox
its Hubble typeinstance ofThere is considerable debate in the literature regarding the galaxy's fundamental properties0.80text

Related concept clusters Concept neighborhoods

The concept neighborhoods around Centaurus A bring nearby vocabulary together. In this analysis, examples include Ngc, Distance and Group. Use the clusters to find adjacent concepts and terminology that may deserve separate research.

  • Centaurus A
    • Ngc
    • Distance
    • Group
    • X-ray
    • Galaxies
    • Galaxy
    • X-rays
    • Detected
    • Telescope
    • Visible
    • Black
    • Hole
  • centaurus a
    • Ngc
    • Distance
    • Group
    • X-ray
    • Galaxies
    • Galaxy
    • X-rays
    • Detected
    • Telescope
    • Visible
    • Black
    • Hole
  • galaxy
    • Elliptical
    • Ngc
    • Radio
    • Spiral
    • Dust
    • Million
    • Peculiar
    • X-rays
    • Lane
    • Years
    • One
    • Jet
  • centaurus
    • Ngc
    • Distance
    • Group
    • X-ray
    • Galaxies
    • Galaxy
    • X-rays
    • Detected
    • Telescope
    • Visible
    • Black
    • Hole
  • lenticular galaxy
    • Elliptical
    • Ngc
    • Radio
    • Spiral
    • Dust
    • Million
    • Peculiar
    • X-rays
    • Lane
    • Years
    • One
    • Jet
  • elliptical galaxy
    • Spiral
    • Elliptical
    • Galaxy
    • Ngc
    • Million
    • Radio
    • Years
    • Dust
    • Peculiar
    • X-rays
    • Lane
    • One
  • radio galaxy
    • Elliptical
    • Ngc
    • X-ray
    • Radio
    • Observations
    • X-rays
    • Spiral
    • One
    • Dust
    • Million
    • Peculiar
    • Lane
  • centaurus a/m83 group
    • Two
    • One
    • Ngc
    • Discovered
    • Distance
    • Group
    • Type
    • X-ray
    • Galaxies
    • Galaxy
    • Observations
    • X-rays

Connections between topic areas Semantic bridges

For Centaurus A, one of the stronger structural bridges in this analysis connects Centaurus A with Overview. Bridges highlight paths between different parts of the map and can reveal research angles that are easy to miss in a flat list.

Min side: 3
Centaurus A — Overview · splits 62 ⟂ 23
Centaurus A — Observational history · splits 68 ⟂ 17
Centaurus A — Novae and supernovae · splits 71 ⟂ 14
Centaurus A — Gallery · splits 77 ⟂ 8
Centaurus A — Morphology · splits 79 ⟂ 6
Centaurus A — Distance · splits 79 ⟂ 6
Centaurus A — Nearby galaxies and galaxy group information · splits 79 ⟂ 6

Map overview Semantic statistics

Centaurus A

Nodes85
Edges84
Triples112
Avg. degree1.98
Density0.023529
Components1

Source & methodology

TTTA analyzes the structure around Centaurus A to surface related topics, entities, relationships, concept neighborhoods and bridge connections. Use the map to explore areas such as History, Observational history & Novae and supernovae, including less central topics that may reveal useful research gaps. Automatically extracted connections are research leads rather than rewritten encyclopedia content.

Source: Wikipedia — Centaurus A · EN edition · Analysis: TopicsToTalkAbout

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