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Astronomical Unit

The astronomical unit (symbol au, or ua) is a unit of length, roughly the distance from Earth to the Sun. However, that distance varies as Earth orbits the Sun, from a maximum (aphelion) to a minimum (perihelion) and back again once a year. Originally conceived as the average of Earth's aphelion and perihelion, it is now defined as exactly 149597870700 meters (about 150 million kilometers, or 93 million miles). The astronomical unit is used primarily as a convenient yardstick for measuring distances within the Solar System or around other stars. However, it is also a fundamental component in the definition of another unit of astronomical length, the parsec.

Astronomical Unit
Symbol/abbreviation: au
Unit of: LENGTH
LENGTH's base unit: meters (SI Unit)
In relation to the base unit (meters), 1 Astronomical Unit = 149597870700 meters.
[Conversion table] 1 Astronomical Unit (au) to all length units
1 au= 8.24555192833E+13 agate [typography] (agate)
1 au= 251942427473 alens (aln)
1 au= 1.495978707E+21 angstroms (Å)
1 au= 1 astronomical unit (au)
1 au= 1.495978707E+29 attometers (am)
1 au= 1266597838.46 barleycorns (bcorn)
1 au= 1.495978707E+23 bicrons (μμ)
1 au= 2.8269911712E+21 bohr radius (Bohr)
1 au= 807247800.003 cable length uk (cbl[UK])
1 au= 681675920.002 cable length us (cbl[US])
1 au= 5.88967994882E+14 calibers (cal)
1 au= 5.88967994882E+14 centiinch (cin)
1 au= 1.495978707E+13 centimeters (cm)
1 au= 7436464581.84 chains (ch)
1 au= 327204441601 cubits (cbt)
1 au= 14959787070 decameters (dam)
1 au= 1.495978707E+12 decimeters (dm)
1 au= 3.97896073024E+14 didot points (didot point)
1 au= 7.85290659843E+12 digits (digit)
1 au= 130881776640 ells (eel)
1 au= 3.54705978465E+13 ems (EM)
1 au= 1.495978707E-7 exameters (Em)
1 au= 81801110400.3 fathoms (fath)
1 au= 490806662402 feet (ft)
1 au= 1.495978707E+26 femtometers (fm)
1 au= 1.495978707E+26 fermi (fermi)
1 au= 1.3088177664E+12 finger cloth (finer)
1 au= 6.73106279865E+12 fingerbreadth (fb)
1 au= 476274659981 fods (fod)
1 au= 743646458.184 furlongs (fur)
1 au= 149.5978707 gigameters (Gm)
1 au= 4857073724.03 greek plethron (pleth)
1 au= 808637138.919 greek stadion (std)
1 au= 1.4724199872E+12 hands (h)
1 au= 1495978707 hectometers (hm)
1 au= 1.495978707E+16 himetrics (hiMetric)
1 au= 78881700726.8 hvats (hvat)
1 au= 5.88967994882E+12 inches (in)
1 au= 149597870.7 kilometers (km)
1 au= 4.8476302884E-9 kiloparsecs (kpc)
1 au= 0.00577597956371 light days (ld)
1 au= 0.138644921872 light hours (lh)
1 au= 8.31561260145 light minutes (lmin)
1 au= 0.000192507876335 light months (lm)
1 au= 498.992230487 light seconds (ls)
1 au= 1.5812056939E-5 light years (ly)
1 au= 7.12370812857E+13 lines (l)
1 au= 743644970891 links (li)
1 au= 149597.8707 megameters (Mm)
1 au= 149597870700 meters (m)
1 au= 5.88967994882E+18 microinches (μin)
1 au= 1.495978707E+17 micrometers (μm)
1 au= 1.495978707E+23 micromicrons (μμm)
1 au= 92955807.273 miles (mi)
1 au= 1.495978707E+14 millimeters (mm)
1 au= 5.88967994882E+15 mils (mil)
1 au= 14959787.07 myriameters (Mym)
1 au= 2.61763553281E+12 nails cloth (nail)
1 au= 1.495978707E+20 nanometers (nm)
1 au= 26925462.689 nautical leagues (Nl)
1 au= 80776388.067 nautical miles (NM)
1 au= 196322664961 paces (pace)
1 au= 1.96322664961E+12 palms (palm)
1 au= 4.8481368111E-6 parsecs (pc)
1 au= 29745858327.4 perch (perch)
1 au= 0.0001495978707 petameters (Pm)
1 au= 3.53380797207E+13 picas (p)
1 au= 1.495978707E+23 picometers (pm)
1 au= 5.65409346319E+14 pixels (PX)
1 au= 9.34986691875E+45 planck length (pl)
1 au= 4.24056689193E+14 points (pt)
1 au= 29745858327.4 poles (pole)
1 au= 3.36553139933E+12 rack unit (ru)
1 au= 3.5338084145E+13 rems (rem)
1 au= 29745858327.4 rods (rd)
1 au= 4214024526.76 roman actus (actus)
1 au= 24540333120.1 ropes (rope)
1 au= 14959787.07 scandinavian miles (mil[Scandinavian])
1 au= 654408883202 spans (span)
1 au= 0.1495978707 terameters (Tm)
1 au= 5.88967994882E+15 thou (th)
1 au= 8.48108570214E+15 twips (twip)
1 au= 172745809122 varas [Argentina] (vr[Argentina])
1 au= 178474792248 varas [California] (vr[California])
1 au= 173145683681 varas [Latin America] (vr[Latin])
1 au= 178513485000 varas [Mexico] (vr[Mexico])
1 au= 178966228855 varas [Spanish] (vr[Spanish])
1 au= 176689702836 varas [Texas] (vr[Texas])
1 au= 140230474.972 versts (vst)
1 au= 1.49298676153E+24 x unit (xu)
1 au= 163602220801 yards (yd)
1 au= 1.495978707E+35 yoctometers (ym)
1 au= 1.495978707E-13 yottameters (Ym)
1 au= 1.495978707E+32 zeptometers (zm)
1 au= 1.495978707E-10 zettameters (Zm)
1 au= 5.88967994882E+12 zolls (zoll)
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