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S Persei: Geography, Location & Variability

S Persei is a red supergiant or hypergiant located near the Double Cluster in Perseus, north of the open cluster NGC 869. It is a member of the Perseus OB1 association and is one of the largest known stars. If placed in the Solar System, its photosphere would engulf the orbit of Jupiter. It is also a semiregular variable, a star whose variations are less…

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S Persei topic overview

The analysis highlights Geography, Location and Variability as prominent areas in the source structure around S Persei.

Related topics: 30
Source areas: 5
Connected nodes: 35
Extracted relationships: 42
Concept neighborhoods: 21
Bridge connections: 35

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 · 13 topics

Location · 7 topics

Variability · 5 topics

Discovery · 3 topics

Properties · 2 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 - 12.0
B−V color index: +2.65
Constellation: Perseus
Declination: +58° 31′ 11.4476″
Right ascension: 02h 22m 51.70928s
Spectral type: M3 Iae–M7

Suggested research paths

A focused starting point derived from the topic graph, ranked independently of the source article order.

Start with these areas

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

Adalbert Krueger
HD Henry Draper Catalogue
BD Bonner Durchmusterung

Variability

Magnitudes Apparent magnitude
Beats Beat (acoustics)
Semiregular variable star
General Catalogue of Variable Stars
Spectral type Stellar classification

Properties

R☉ Solar radius
Lost Stellar mass loss

Location

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 S Persei connects Entity context

The extracted context around S Persei shows recurring relationship patterns in the source. For example, S Persei → A0, Double Cluster, For, Gaia Data Release, It, Per OB1, Persei, Perseus Arm, The, There, This Another extracted example is S Persei → DUSTY, Its, Many, Modelled, Older, Persei, The, This. Use these groups to spot repeated connection types before inspecting the individual relationships.

S Persei

Top relations

related to Location · 11

S Persei → A0, Double Cluster, For, Gaia Data Release, It, Per OB1, Persei, Perseus Arm, The, There, This

related to Properties · 8

S Persei → DUSTY, Its, Many, Modelled, Older, Persei, The, This

related to Variability · 8

S Persei → General Catalogue, It, Other, Persei, SRc, There, Variable Stars, While

related to Discovery · 6

S Persei → Adalbert Krueger, BD, German, HD, It, Persei

is a · 2

S Persei → double star, red supergiant or hypergiant located near the Double Cluster in Perseus

Apparent magnitude (V) · 1

S Persei → 7.9 - 12.0

B−V color index · 1

S Persei → +2.65

Constellation · 1

S Persei → Perseus

Declination · 1

S Persei → +58° 31′ 11.4476″

Right ascension · 1

S Persei → 02h 22m 51.70928s

Important terminology

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

Important terminology

persei perseus also variable supergiant double red one stars hypergiant radius magnitude spectral type cluster largest star magnitudes parallax mass

S Persei relationships Subject–Predicate–Object triples

TTTA extracted 42 structured relationships around S Persei. Examples in this analysis include S Persei → Apparent magnitude (V) → 7.9 - 12.0 and S Persei → B−V color index → +2.65. The table shows each extracted connection, where it came from and its confidence.

Subject	Predicate	Object	Confidence	Src
S Persei	Apparent magnitude (V)	7.9 - 12.0	1.00	infobox
S Persei	B−V color index	+2.65	1.00	infobox
S Persei	Constellation	Perseus	1.00	infobox
S Persei	Declination	+58° 31′ 11.4476″	1.00	infobox
S Persei	Right ascension	02h 22m 51.70928s	1.00	infobox
S Persei	Spectral type	M3 Iae–M7	1.00	infobox
S Persei	Variable type	SRc	1.00	infobox
S Persei	is a	red supergiant or hypergiant located near the Double Cluster in Perseus	0.90	text
S Persei	is a	double star	0.90	text
S Persei	related to Discovery	Persei	0.60	section
S Persei	related to Discovery	German	0.60	section
S Persei	related to Discovery	Adalbert Krueger	0.60	section

Related concept clusters Concept neighborhoods

The concept neighborhoods around S Persei bring nearby vocabulary together. In this analysis, examples include Also, Double and Type. Use the clusters to find adjacent concepts and terminology that may deserve separate research.

S Persei
- Also
- Double
- Type
- Near
- North
- Src
- Cluster
- Hypergiant
- Mass
- Star
- Varies
- Magnitude
s persei
- Also
- Double
- Type
- Near
- North
- Src
- Cluster
- Hypergiant
- Mass
- Star
- Varies
- Magnitude
double cluster
- Cluster
- Double
- Perseus
- Near
- North
- Open
- Per
- Location
- Persei
- Association
- Bd
- Distance
perseus
- Association
- Ob1
- Per
- Location
- Bd
- Distance
- Hd
- Luminosity
- Src
- Temperature
- Variability
- Largest
open cluster
- Double
- Perseus
- Near
- North
- Open
- Per
- Association
- Location
- Ob1
- Bd
- Distance
- Hd
perseus ob1
- Association
- Ob1
- Perseus
- Per
- Open
- Largest
- Location
- Somewhat
- Bd
- Distance
- Hd
- Luminosity
perseus arm
- Association
- Ob1
- Per
- Location
- Bd
- Distance
- Hd
- Luminosity
- Src
- Temperature
- Variability
- Largest
double star
- Cluster
- Perseus
- Near
- North
- Open
- Per
- Variable
- Persei
- Location
- Src
- Association
- Bd

Connections between topic areas Semantic bridges

For S Persei, one of the stronger structural bridges in this analysis connects S Persei 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

S Persei — Overview · splits 22 ⟂ 14

S Persei — Location · splits 28 ⟂ 8

S Persei — Variability · splits 30 ⟂ 6

S Persei — Discovery · splits 32 ⟂ 4

S Persei — Properties · splits 33 ⟂ 3

Map overview Semantic statistics

S Persei

Nodes36

Edges35

Triples42

Avg. degree1.94

Density0.055556

Components1

Source & methodology

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

Source: Wikipedia — S Persei · EN edition · Analysis: TopicsToTalkAbout

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