Research any topic before you write.

Find related topics. | Discover entities. | See connections. | Build a topical map.

Lexell's Comet

D/1770 L1, popularly known as Lexell's Comet after its orbit computer Anders Johan Lexell, was a comet discovered by astronomer Charles Messier in June 1770. It is notable for having passed closer to Earth than any other comet in recorded history, approaching to a distance of only 0.015 astronomical units (2,200,000 km; 1,400,000 mi), or six times the…

Measurement & Art

Use the mouse wheel or two fingers (on touchscreens) to zoom in and out of the map.

Research this topic

Explore the main themes, entities and connections around Lexell's Comet. Start with the topic map, then use the sections below for research and deeper semantic analysis.

Explore this topic

Start with a few of the strongest sections from the source topic. These are research directions, not a list of keywords you must use.

Orbit

Solar SystemParabolic trajectoryPerihelionElliptical orbitJupiter family comet
13 related topics

Discovery

SagittariusJupiterNebulaeComaArcminutes
9 related topics

Close approach to Earth

NucleusSun
2 related topics

Identification

Longitude of perihelionKm
2 related topics

Key facts & relationships

High-confidence facts extracted from structured source data. Use them as anchors for further research.

Alternative designations
1770 I, P/Lexell, Lexell's Comet
Aphelion
5.6184 ± 0.0409 AU
Argument of periapsis
224.98 ± 0.12
Dimensions
~4–30 km
Discovered by
Charles Messier
Discovery date
June 14, 1770

Topics to explore

Browse the full topic structure. Each item opens a new analysis centered on that subject.

Overview

Discovery

Close approach to Earth

Orbit

Identification

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.

Map overview Semantic statistics

Lexell's Comet

Nodes43
Edges42
Triples51
Avg. degree1.95
Density0.046512
Components1

How this topic connects Entity context

See the strongest relationship patterns around the current topic before diving into the raw triples.

Lexell's Comet

Top relations

related to External links · 19
Lexell's Comet → Close, D/1770 L1, Discovery, Dynamic SiteEphemerides, Ephemeris, JL33, JPL Small-Body DatabaseClose, Lexell, MOID, NASA JPLLexell's Comet, Near Earth Objects, NeoDyS-2, Observation, Observational, Orbit, Orbit Diagram, Orbital, Physical, Proper
related to Identification · 16
Lexell's Comet → AU, For, If Lexell's, JL33, Jupiter, Lexell's, LJ1, Most, November, Solar System, The, They, Venus, With, XK136, YV3
Alternative designations · 1
Lexell's Comet → 1770 I, P/Lexell, Lexell's Comet
Aphelion · 1
Lexell's Comet → 5.6184 ± 0.0409 AU
Argument of periapsis · 1
Lexell's Comet → 224.98 ± 0.12
Dimensions · 1
Lexell's Comet → ~4–30 km
Discovered by · 1
Lexell's Comet → Charles Messier
Discovery date · 1
Lexell's Comet → June 14, 1770
Eccentricity · 1
Lexell's Comet → 0.7856 ± 0.0013
Epoch · 1
Lexell's Comet → 1770-Aug-14 (JD 2367764.5)

Important terminology Word statistics

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

Important terminology

comet orbit 1770 jupiter lexell's earth lexell perihelion approach km june discovered messier au comet's even close sun time solar

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Lexell's CometAlternative designations1770 I, P/Lexell, Lexell's Comet1.00infobox
Lexell's CometAphelion5.6184 ± 0.0409 AU1.00infobox
Lexell's CometArgument of periapsis224.98 ± 0.121.00infobox
Lexell's CometDimensions~4–30 km1.00infobox
Lexell's CometDiscovered byCharles Messier1.00infobox
Lexell's CometDiscovery dateJune 14, 17701.00infobox
Lexell's CometEccentricity0.7856 ± 0.00131.00infobox
Lexell's CometEpoch1770-Aug-14 (JD 2367764.5)1.00infobox
Lexell's CometInclination1.550 ± 0.004°1.00infobox
Lexell's CometLast perihelionAugust 14, 17701.00infobox
Lexell's CometLongitude of ascending node134.50 ± 0.121.00infobox
Lexell's CometLongitude of perihelion359.48 ± 0.241.00infobox
Lexell's CometNext perihelionunknown/Lost1.00infobox
Lexell's CometOrbital period5.58 years (2039 days)1.00infobox
Lexell's CometPerihelion0.6746 ± 0.003 AU (before Jupiter encounter of 1779)1.00infobox
Lexell's CometSemi-major axis3.1465 ± 0.0206 AU1.00infobox

Related concept clusters Concept neighborhoods

These clusters group vocabulary that occurs around closely connected concepts in the source material.

    Connections between topic areas Semantic bridges

    Bridges can reveal useful research angles that are easy to miss in a flat list of related terms.

    Min side: 3
    For writers, content strategists, SEOs, marketers and creators — from quick topic research to advanced semantic analysis.