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Luna 4: Art, Background & Mission

Luna 4, or E-6 No.4 (Ye-6 series), sometimes known in the West as Lunik 4, was a Soviet spacecraft launched in 1963 as part of the Luna program to attempt the first soft landing on the Moon. Following a successful launch, the spacecraft failed to perform a course correction and as a result it missed the Moon, remaining instead in Earth orbit before…

Language: English [EN]
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Luna 4 topic overview

The analysis highlights Art, Background and Mission as prominent areas in the source structure around Luna 4.

Related topics
38
Source areas
5
Connected nodes
43
Extracted relationships
58
Concept neighborhoods
18
Bridge connections
43

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.

Background · 11 topics
Mission · 10 topics
Spacecraft · 7 topics
Overview · 6 topics
Results and status · 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.

Apoapsis altitude
89,250 km (55,460 mi)
Closest approach
April 5, 1963, 13:25 UT
COSPAR ID
1963-008B
Distance
8,400 kilometres (5,200 mi)
Epoch
April 2, 1963
Last contact
April 15, 1963

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

Background

Spacecraft

Mission

Results and status

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 Luna 4 connects Entity context

The extracted context around Luna 4 shows recurring relationship patterns in the source. For example, Luna 4 → After, April, Baikonur Cosmodrome, December, February, January, Launch, Launches, LEO, Luna, Luna E-6 No, Molniya-L, Simferopol, Site, UTC, Ye-6 Another extracted example is Luna 4 → April, Because Luna, Earth, Earth's, February, French, Italian, Luna, MHz, Moon, Russia, Sun, The, The Ye-6, Though Luna. Use these groups to spot repeated connection types before inspecting the individual relationships.

Luna 4

Top relations

related to Mission · 16
Luna 4 → After, April, Baikonur Cosmodrome, December, February, January, Launch, Launches, LEO, Luna, Luna E-6 No, Molniya-L, Simferopol, Site, UTC, Ye-6
related to Results and status · 15
Luna 4 → April, Because Luna, Earth, Earth's, February, French, Italian, Luna, MHz, Moon, Russia, Sun, The, The Ye-6, Though Luna
related to Spacecraft · 10
Luna 4 → I-100, Isayev, Luna, Mars, Molniya, SAN, The, The Ye-6, This, Venera
Apoapsis altitude · 1
Luna 4 → 89,250 km (55,460 mi)
Closest approach · 1
Luna 4 → April 5, 1963, 13:25 UT
COSPAR ID · 1
Luna 4 → 1963-008B
Distance · 1
Luna 4 → 8,400 kilometres (5,200 mi)
Epoch · 1
Luna 4 → April 2, 1963
Last contact · 1
Luna 4 → April 15, 1963
Launch date · 1
Luna 4 → April 2, 1963, 08:04:00 (1963-04-02UTC08:04Z) UTC

Important terminology

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

Important terminology

luna spacecraft moon mission ye-6 landing lander would program first orbit lunar soviet mi launch ft control launched 1963 successful

Luna 4 relationships Subject–Predicate–Object triples

TTTA extracted 58 structured relationships around Luna 4. Examples in this analysis include Luna 4 → Apoapsis altitude → 89,250 km (55,460 mi) and Luna 4 → Closest approach → April 5, 1963, 13:25 UT. The table shows each extracted connection, where it came from and its confidence.

SubjectPredicateObjectConfidenceSrc
Luna 4Apoapsis altitude89,250 km (55,460 mi)1.00infobox
Luna 4Closest approachApril 5, 1963, 13:25 UT1.00infobox
Luna 4COSPAR ID1963-008B1.00infobox
Luna 4Distance8,400 kilometres (5,200 mi)1.00infobox
Luna 4EpochApril 2, 19631.00infobox
Luna 4Last contactApril 15, 19631.00infobox
Luna 4Launch dateApril 2, 1963, 08:04:00 (1963-04-02UTC08:04Z) UTC1.00infobox
Luna 4Launch mass1,422 kilograms (3,135 lb)1.00infobox
Luna 4Launch siteBaikonur 1/51.00infobox
Luna 4ManufacturerOKB-11.00infobox
Luna 4Mission duration13 days (launch to last contact)1.00infobox
Luna 4Mission typeLunar lander1.00infobox
Luna 4OperatorSoviet space program1.00infobox
Luna 4Periapsis altitude690,000 km (430,000 mi)1.00infobox
Luna 4RocketMolniya-L 8K78/E61.00infobox
Luna 4SATCAT no.5661.00infobox
Luna 4SpacecraftYe-6 No.41.00infobox

Related concept clusters Concept neighborhoods

The concept neighborhoods around Luna 4 bring nearby vocabulary together. In this analysis, examples include Moon, Ye-6 and Launched. Use the clusters to find adjacent concepts and terminology that may deserve separate research.

  • Luna 4
    • Moon
    • Ye-6
    • Launched
    • Program
    • Mission
    • Space
    • Spacecraft
    • Orbit
    • Series
    • Rocket
    • Successful
    • April
  • luna 4
    • Moon
    • Ye-6
    • Launched
    • Program
    • Mission
    • Space
    • Spacecraft
    • Orbit
    • Series
    • Rocket
    • Successful
    • April
  • luna program
    • Series
    • Moon
    • Space
    • Ye-6
    • Launched
    • Soviet
    • Program
    • Mission
    • Spacecraft
    • Orbit
    • Rocket
    • Successful
  • luna 9
    • Moon
    • Ye-6
    • Launched
    • Program
    • Mission
    • Space
    • Spacecraft
    • Orbit
    • Series
    • Rocket
    • Successful
    • April
  • luna 3
    • Moon
    • Ye-6
    • Launched
    • Program
    • Mission
    • Space
    • Spacecraft
    • Orbit
    • Series
    • Rocket
    • Successful
    • April
  • luna (rocket)
    • Moon
    • Ye-6
    • Launched
    • Program
    • Mission
    • Space
    • Spacecraft
    • Orbit
    • Engine
    • Four
    • Main
    • Successful
  • luna e-6 no.2
    • Moon
    • Ye-6
    • Launched
    • Program
    • Mission
    • Space
    • Spacecraft
    • Orbit
    • Series
    • Rocket
    • Successful
    • April
  • luna e-6 no.3
    • Moon
    • Ye-6
    • Launched
    • Program
    • Mission
    • Space
    • Spacecraft
    • Orbit
    • Series
    • Rocket
    • Successful
    • April

Connections between topic areas Semantic bridges

For Luna 4, one of the stronger structural bridges in this analysis connects Luna 4 with Background. 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
Luna 4 — Background · splits 32 ⟂ 12
Luna 4 — Mission · splits 33 ⟂ 11
Luna 4 — Spacecraft · splits 36 ⟂ 8
Luna 4 — Overview · splits 37 ⟂ 7
Luna 4 — Results and status · splits 39 ⟂ 5

Map overview Semantic statistics

Luna 4

Nodes44
Edges43
Triples58
Avg. degree1.95
Density0.045455
Components1

Source & methodology

TTTA analyzes the structure around Luna 4 to surface related topics, entities, relationships, concept neighborhoods and bridge connections. Use the map to explore areas such as Art, Background & Mission, including less central topics that may reveal useful research gaps. Automatically extracted connections are research leads rather than rewritten encyclopedia content.

Source: Wikipedia — Luna 4 · EN edition · Analysis: TopicsToTalkAbout

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