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221 Eos: Overview, Related Topics & Entities

221 Eos is a large main-belt asteroid that was discovered by Austrian astronomer Johann Palisa on January 18, 1882, in Vienna. In 1884, it was named after Eos, the Greek goddess of the dawn, to honour the opening of a new observatory that was hoped to bring about a new dawn for Viennese astronomy.

Language: English [EN]
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221 Eos topic overview

The analysis highlights Overview, Related Topics and Entities as prominent areas in the source structure around 221 Eos.

Related topics
19
Source areas
1
Connected nodes
20
Extracted relationships
41
Concept neighborhoods
18
Bridge connections
20

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 · 19 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.

Absolute magnitude (H)
7.67
Adjectives
Eoan /iːˈoʊ.ən/
Alternative designations
A882 BA
Aphelion
3.3249 AU (497.40 Gm)
Argument of perihelion
193.56°
Average orbital speed
17.16 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

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 221 Eos connects Entity context

The extracted context around 221 Eos shows recurring relationship patterns in the source. For example, 221 Eos → AstDyS-2, Asteroids, DatabaseMinor Planet Discovery CircumstancesAsteroid, Discovery, Dynamic SiteEphemeris, Eos, Ephemeris, JPL Small-Body DatabaseClose, Lightcurve Data File221 Eos, Observation, Observational, Orbit, Orbital, Physical, Proper, The Asteroid Orbital Elements Another extracted example is 221 Eos → 7.67. Use these groups to spot repeated connection types before inspecting the individual relationships.

221 Eos

Top relations

related to External links · 16
221 Eos → AstDyS-2, Asteroids, DatabaseMinor Planet Discovery CircumstancesAsteroid, Discovery, Dynamic SiteEphemeris, Eos, Ephemeris, JPL Small-Body DatabaseClose, Lightcurve Data File221 Eos, Observation, Observational, Orbit, Orbital, Physical, Proper, The Asteroid Orbital Elements
Absolute magnitude (H) · 1
221 Eos → 7.67
Adjectives · 1
221 Eos → Eoan /iːˈoʊ.ən/
Alternative designations · 1
221 Eos → A882 BA
Aphelion · 1
221 Eos → 3.3249 AU (497.40 Gm)
Argument of perihelion · 1
221 Eos → 193.56°
Average orbital speed · 1
221 Eos → 17.16 km/s
Dimensions · 1
221 Eos → 103.87±3.6 km
Discovered by · 1
221 Eos → Johann Palisa
Discovery date · 1
221 Eos → 18 January 1882

Important terminology

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

Important terminology

asteroid eos orbital period named 10 spectral 221 au properties eccentricity km discovered johann palisa axis 22 mean rotation based

221 Eos relationships Subject–Predicate–Object triples

TTTA extracted 41 structured relationships around 221 Eos. Examples in this analysis include 221 Eos → Absolute magnitude (H) → 7.67 and 221 Eos → Adjectives → Eoan /iːˈoʊ.ən/. The table shows each extracted connection, where it came from and its confidence.

SubjectPredicateObjectConfidenceSrc
221 EosAbsolute magnitude (H)7.671.00infobox
221 EosAdjectivesEoan /iːˈoʊ.ən/1.00infobox
221 EosAlternative designationsA882 BA1.00infobox
221 EosAphelion3.3249 AU (497.40 Gm)1.00infobox
221 EosArgument of perihelion193.56°1.00infobox
221 EosAverage orbital speed17.16 km/s1.00infobox
221 EosDimensions103.87±3.6 km1.00infobox
221 EosDiscovered byJohann Palisa1.00infobox
221 EosDiscovery date18 January 18821.00infobox
221 EosEccentricity0.104471.00infobox
221 EosGeometric albedo0.1400±0.0101.00infobox
221 EosInclination10.880°1.00infobox
221 EosLongitude of ascending node141.845°1.00infobox
221 EosMean anomaly66.5202°1.00infobox
221 EosMean motion0° 11m 19.284s / day1.00infobox
221 EosMinor planet categoryMain belt (Eos)1.00infobox
221 EosNamed afterEos1.00infobox
221 EosObservation arc130.21 yr (47561 d)1.00infobox
221 EosOrbital period (sidereal)5.22 yr (1907.8 d)1.00infobox
221 EosPerihelion2.69594 AU (403.307 Gm)1.00infobox
221 EosPronunciation/ˈiːɒs/1.00infobox
221 EosSemi-major axis3.01044 AU (450.355 Gm)1.00infobox
221 EosSpectral typeK1.00infobox
221 EosSynodic rotation period10.443 h (0.4351 d)1.00infobox
221 Eosis alarge main-belt asteroid that was discovered by Austrian astronomer Johann Palisa on January 180.90text

Related concept clusters Concept neighborhoods

The concept neighborhoods around 221 Eos bring nearby vocabulary together. In this analysis, examples include Named, Discovered and Johann. Use the clusters to find adjacent concepts and terminology that may deserve separate research.

  • 221 Eos
    • Named
    • Discovered
    • Johann
    • Palisa
    • Asteroid
    • Orbital
    • Astronomer
    • Austrian
    • Data
    • Discovery
    • Greek
    • January
  • 221 eos
    • Named
    • Discovered
    • Johann
    • Palisa
    • Asteroid
    • Orbital
    • Astronomer
    • Austrian
    • Data
    • Discovery
    • Greek
    • January
  • asteroid
    • Spectral
    • Eos
    • Au
    • Axis
    • Based
    • Body
    • Discovered
    • Eccentricity
    • Johann
    • Palisa
    • Properties
    • Named
  • johann palisa
    • Palisa
    • Data
    • Discovery
    • January
    • Large
    • Lightcurve
    • Main-belt
    • Minor
    • Observation
    • Planet
    • References
    • Vienna
  • eos
    • Named
    • Discovered
    • Johann
    • Palisa
    • Asteroid
    • Orbital
    • Astronomer
    • Austrian
    • Data
    • Discovery
    • Greek
    • January
  • k-type asteroid
    • Spectral
    • Eos
    • Au
    • Axis
    • Based
    • Body
    • Discovered
    • Eccentricity
    • Johann
    • Palisa
    • Properties
    • Named
  • eos asteroid family
    • Named
    • Discovered
    • Johann
    • Palisa
    • Spectral
    • Asteroid
    • Eos
    • Orbital
    • Au
    • Axis
    • Based
    • Body
  • semimajor axis
    • Au
    • Eccentricity
    • Period
    • Data
    • Discovery
    • Lightcurve
    • Minor
    • Observation
    • Planet
    • References
    • Sun
    • Based

Connections between topic areas Semantic bridges

Bridges highlight paths between different parts of the 221 Eos map and can reveal research angles that are easy to miss in a flat list.

Min side: 3

Map overview Semantic statistics

221 Eos

Nodes21
Edges20
Triples41
Avg. degree1.9
Density0.095238
Components1

Source & methodology

TTTA analyzes the structure around 221 Eos to surface related topics, entities, relationships, concept neighborhoods and bridge connections. Use the map to explore areas such as Overview, Related Topics & Entities, including less central topics that may reveal useful research gaps. Automatically extracted connections are research leads rather than rewritten encyclopedia content.

Source: Wikipedia — 221 Eos · EN edition · Analysis: TopicsToTalkAbout

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