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Pinwheel Galaxy: Art & Regions

The Pinwheel Galaxy (also known as Messier 101, M101 or NGC 5457) is a face-on, counterclockwise intermediate spiral galaxy located 21 million light-years (6.4 megaparsecs) from Earth in the constellation Ursa Major. It was discovered by Pierre Méchain in 1781 and was communicated that year to Charles Messier, who verified its position for inclusion in…

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Pinwheel Galaxy topic overview

The analysis highlights Art and Regions as prominent areas in the source structure around Pinwheel Galaxy.

Related topics
47
Source areas
5
Connected nodes
52
Extracted relationships
11
Related term clusters
29
Bridge connections
52

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.

Structure and composition · 13 topics
Supernovae and luminous red nova · 12 topics
Overview · 11 topics
Companion galaxies · 7 topics
Discovery · 4 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)
7.9
Apparent size (V)
28.8′ × 26.9′
Constellation
Ursa Major
Declination
+54° 20′ 56.220″
Distance
21.6 ± 0.28 Mly (6.644 ± 0.087 Mpc)
Heliocentric radial velocity
241 ± 2 km/s

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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

Discovery

Structure and composition

Companion galaxies

Supernovae and luminous red nova

For the semantics nerds

You can skip this section if you’re here for content ideas and keyword inspiration.

Advanced semantic analysis

How Pinwheel Galaxy connects Entity context

The extracted context around Pinwheel Galaxy shows recurring relationship patterns in the source. For example, Pinwheel Galaxy → 7.9 Another extracted example is Pinwheel Galaxy → 28.8′ × 26.9′. Use these groups to spot repeated connection types before inspecting the individual relationships.

Pinwheel Galaxy

Top relations

Apparent magnitude (V) · 1
Pinwheel Galaxy → 7.9
Apparent size (V) · 1
Pinwheel Galaxy → 28.8′ × 26.9′
Constellation · 1
Pinwheel Galaxy → Ursa Major
Declination · 1
Pinwheel Galaxy → +54° 20′ 56.220″
Distance · 1
Pinwheel Galaxy → 21.6 ± 0.28 Mly (6.644 ± 0.087 Mpc)
Heliocentric radial velocity · 1
Pinwheel Galaxy → 241 ± 2 km/s
Number of stars · 1
Pinwheel Galaxy → 1 trillion (1012)
Redshift · 1
Pinwheel Galaxy → 0.000804
Right ascension · 1
Pinwheel Galaxy → 14h 03m 12.5441s
Size · 1
Pinwheel Galaxy → 252,000 ly (77.31 kpc) (diameter; 4050 Å high surface brightness level)

Important terminology

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

Important terminology

m101 galaxy type pinwheel ii discovered messier spiral sn ngc constellation stars telescope hubble large mag february companion also diameter

Pinwheel Galaxy relationships Subject–Predicate–Object triples

TTTA extracted 11 structured relationships around Pinwheel Galaxy. Examples in this analysis include Pinwheel Galaxy → Apparent magnitude (V) → 7.9 and Pinwheel Galaxy → Apparent size (V) → 28.8′ × 26.9′. The table shows each extracted connection, where it came from and its confidence.

SubjectPredicateObjectConfidenceSrc
Pinwheel GalaxyApparent magnitude (V)7.91.00infobox
Pinwheel GalaxyApparent size (V)28.8′ × 26.9′1.00infobox
Pinwheel GalaxyConstellationUrsa Major1.00infobox
Pinwheel GalaxyDeclination+54° 20′ 56.220″1.00infobox
Pinwheel GalaxyDistance21.6 ± 0.28 Mly (6.644 ± 0.087 Mpc)1.00infobox
Pinwheel GalaxyHeliocentric radial velocity241 ± 2 km/s1.00infobox
Pinwheel GalaxyNumber of stars1 trillion (1012)1.00infobox
Pinwheel GalaxyRedshift0.0008041.00infobox
Pinwheel GalaxyRight ascension14h 03m 12.5441s1.00infobox
Pinwheel GalaxySize252,000 ly (77.31 kpc) (diameter; 4050 Å high surface brightness level)1.00infobox
Pinwheel GalaxyTypeSAB(rs)cd HII1.00infobox

Related concept clusters Related term clusters

The concept neighborhoods around Pinwheel Galaxy bring nearby vocabulary together. In this analysis, examples include Constellation, Pinwheel and Iras. Use the clusters to find adjacent concepts and terminology that may deserve separate research.

  • Pinwheel Galaxy
    • Constellation
    • Pinwheel
    • Iras
    • Major
    • Space
    • Ursa
    • M101
    • Hubble
    • Messier
    • Telescope
    • Spiral
    • Large
  • pinwheel galaxy
    • Constellation
    • Pinwheel
    • Iras
    • Major
    • Space
    • Ursa
    • M101
    • Hubble
    • Telescope
    • Messier
    • Spiral
    • Large
  • intermediate spiral galaxy
    • Pinwheel
    • M101
    • Structure
    • Telescope
    • Messier
    • Spiral
    • Constellation
    • Large
    • Iras
    • Major
    • Space
    • Ursa
  • constellation
    • Iras
    • Major
    • Messier
    • Ursa
    • Pinwheel
    • Ngc
    • References
    • Spiral
    • Galaxy
    • Space
    • Type
    • Diameter
  • ursa major
    • Major
    • Ursa
    • Also
    • Constellation
    • Ngc
    • References
    • Messier
    • Iras
    • Pinwheel
    • Space
    • Diameter
    • Galaxies
  • charles messier
    • Pinwheel
    • Constellation
    • Iras
    • Major
    • Ursa
    • Ngc
    • Spiral
    • References
    • Space
    • Type
    • M101
    • Diameter
  • messier catalogue
    • Pinwheel
    • Constellation
    • Iras
    • Major
    • Ursa
    • Ngc
    • Spiral
    • References
    • Space
    • Type
    • M101
    • Diameter
  • andromeda galaxy
    • Pinwheel
    • M101
    • Telescope
    • Messier
    • Spiral
    • Constellation
    • Large
    • Iras
    • Major
    • Space
    • Ursa
    • Also

Connections between topic areas Semantic bridges

For Pinwheel Galaxy, one of the stronger structural bridges in this analysis connects Pinwheel Galaxy with Structure and composition. 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
Pinwheel Galaxy — Structure and composition · splits 39 ⟂ 14
Pinwheel Galaxy — Supernovae and luminous red nova · splits 40 ⟂ 13
Pinwheel Galaxy — Overview · splits 41 ⟂ 12
Pinwheel Galaxy — Companion galaxies · splits 45 ⟂ 8
Pinwheel Galaxy — Discovery · splits 48 ⟂ 5

Map overview Semantic statistics

Pinwheel Galaxy

Nodes53
Edges52
Triples11
Avg. degree1.96
Density0.037736
Components1

Source & methodology

TTTA analyzes the structure around Pinwheel Galaxy to surface related topics, entities, relationships, concept neighborhoods and bridge connections. Use the map to explore areas such as Art & Regions, including less central topics that may reveal useful research gaps. Automatically extracted connections are research leads rather than rewritten encyclopedia content.

Source: Wikipedia — Pinwheel Galaxy · EN edition · Analysis: TopicsToTalkAbout

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