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Parsec

The parsec (symbol: pc) is a unit of length used to measure the large distances to astronomical objects outside the Solar System, approximately equal to 3.26 light-years or 206,265 astronomical units (au), i.e., 30.9 trillion kilometres (19.2 trillion miles). The parsec unit is obtained by the use of parallax and trigonometry, and is defined as the…

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astronomical units
206,265 au 3.26156 ly
imperial US units
1.9174×1013 mi
metric (SI) units
3.0857×1016 m ≈ 31 petametres
Symbol
pc
Unit of
length/distance
Unit system
astronomical units

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Overview

History and derivation

Usage and measurement

Distances in parsecs

Volume units

In popular culture

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Map overview Semantic statistics

Parsec

Nodes108
Edges107
Triples90
Avg. degree1.98
Density0.018519
Components1

How this topic connects Entity context

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Parsec

Top relations

related to External links · 17
Parsec → Astronomical Distance Scales, Astronomy, Brady Haran, Cosmology, CS1, Galaxies, Guidry, Knoxville, March, Merrifield, Michael, Nottingham, Retrieved, Sixty Symbols, Stars, Tennessee, University
related to Parsecs and kiloparsecs · 13
Parsec → Astronomers, Distances, Earth, ESO, Hipparcos, M31, Milky Way, Pleiades, Proxima Centauri, So, Sun, The, The Andromeda Galaxy
related to In popular culture · 11
Parsec → Han Solo, In Solo, It, Kessel Run, Millennium Falcon, Solo, Star Wars, Star Wars Story, The, The Force Awakens, The Mandalorian
related to history · 10
Parsec → Cygni, Earth, Friedrich Wilhelm Bessel, German, Imagining, It, One, Sun, The, Then
related to Megaparsecs and gigaparsecs · 10
Parsec → Astronomers, CfA2 Great Wall, Gpc, H/100, Hubble, Mpc, Mpc/h, One, Sometimes, The Hubble
related to Distances less than a parsec · 9
Parsec → Distances, Earth, February, One, So, Sun, The, The Oort, Voyager
related to Volume units · 9
Parsec → All, Boötes Void, Gpc3, In, Milky Way, Mpc3, The, The Sun, To
astronomical units · 1
Parsec → 206,265 au 3.26156 ly
imperial US units · 1
Parsec → 1.9174×1013 mi
metric (SI) units · 1
Parsec → 3.0857×1016 m ≈ 31 petametres

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Important terminology

distance one earth sun ly unit astronomical arcsecond star distances pc au angle parsecs parallax galaxy used units galaxies length

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Parsecastronomical units206,265 au 3.26156 ly1.00infobox
Parsecimperial US units1.9174×1013 mi1.00infobox
Parsecmetric (SI) units3.0857×1016 m ≈ 31 petametres1.00infobox
ParsecSymbolpc1.00infobox
ParsecUnit oflength/distance1.00infobox
ParsecUnit systemastronomical units1.00infobox
Parsecis ashortened form of a distance corresponding to a parallax of one arcsecond0.90text
the size ofinstance ofAstronomers typically use gigaparsecs to express the sizes of large-scale structures0.80text
and distance toinstance ofAstronomers typically use gigaparsecs to express the sizes of large-scale structures0.80text
the CfA2 Great Wallinstance ofAstronomers typically use gigaparsecs to express the sizes of large-scale structures0.80text
Parsecrelated to Distances less than a parsecDistances0.60section
Parsecrelated to Distances less than a parsecSo0.60section

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