Convert 21 Light Seconds to Astronomical Units

How far is 21 light seconds? How long is 21 light seconds in astronomical units? 21 light seconds to AU conversion.
Amount
From
To
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21 Light Seconds ≈
0.042083765 Astronomical Units
result rounded
Decimal places
Result in Plain English
21 light seconds is equal to about 0.0421 astronomical units.
To a Percentage
21 light seconds ≈ 4.21% of a astronomical unit.
In Scientific Notation
21 light seconds
= 2.1 x 101 light seconds
≈ 4.20838 x 10-2 astronomical units
Light Seconds
A light second is the distance that light travels in one second. It is exactly 299,792.458 kilometers or about 186,000 miles.
Astronomical Units
An astronomical unit is the average distance between the Earth and the Sun. Estimates of this distance have varied over time. It is now defined as exactly 149,597,870.7 kilometers.
Light Seconds to Astronomical Units Conversions
results may be rounded
Light seconds AU
21.00 0.042084
21.01 0.042104
21.02 0.042124
21.03 0.042144
21.04 0.042164
21.05 0.042184
21.06 0.042204
21.07 0.042224
21.08 0.042244
21.09 0.042264
21.10 0.042284
21.11 0.042304
21.12 0.042324
21.13 0.042344
21.14 0.042364
21.15 0.042384
21.16 0.042404
21.17 0.042424
21.18 0.042444
21.19 0.042465
21.20 0.042485
21.21 0.042505
21.22 0.042525
21.23 0.042545
21.24 0.042565
21.25 0.042585
21.26 0.042605
21.27 0.042625
21.28 0.042645
21.29 0.042665
21.30 0.042685
21.31 0.042705
21.32 0.042725
21.33 0.042745
Light seconds AU
21.34 0.042765
21.35 0.042785
21.36 0.042805
21.37 0.042825
21.38 0.042845
21.39 0.042865
21.40 0.042885
21.41 0.042905
21.42 0.042925
21.43 0.042945
21.44 0.042966
21.45 0.042986
21.46 0.043006
21.47 0.043026
21.48 0.043046
21.49 0.043066
21.50 0.043086
21.51 0.043106
21.52 0.043126
21.53 0.043146
21.54 0.043166
21.55 0.043186
21.56 0.043206
21.57 0.043226
21.58 0.043246
21.59 0.043266
21.60 0.043286
21.61 0.043306
21.62 0.043326
21.63 0.043346
21.64 0.043366
21.65 0.043386
21.66 0.043406
21.67 0.043426
Light seconds AU
21.68 0.043446
21.69 0.043467
21.70 0.043487
21.71 0.043507
21.72 0.043527
21.73 0.043547
21.74 0.043567
21.75 0.043587
21.76 0.043607
21.77 0.043627
21.78 0.043647
21.79 0.043667
21.80 0.043687
21.81 0.043707
21.82 0.043727
21.83 0.043747
21.84 0.043767
21.85 0.043787
21.86 0.043807
21.87 0.043827
21.88 0.043847
21.89 0.043867
21.90 0.043887
21.91 0.043907
21.92 0.043927
21.93 0.043947
21.94 0.043968
21.95 0.043988
21.96 0.044008
21.97 0.044028
21.98 0.044048
21.99 0.044068
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