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year (astronomical), Bessel year 
Symbol:  aastr. 
Category:  Time 
SI Equivalent:  3.15579×107 s
Dimension:  T 
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Convert     aastr.  
1 aastr. = 
Permeability coefficient
  Symbol Unit Name
3.15579×107  kg-m/N-s  kilogram meter per newton per second 
2.17158×1019  perm-inch (0 °C)  perm-inch (0°C) 
2.16255×1019  perm-inch (23 °C)  perm-inch (23°C) 
2.17158×1022  perm-mil (0 °C)  perm-mil (0°C) 
2.16255×1022  perm-mil (23 °C)  perm-mil (23°C) 
Time
  Symbol Unit Name
1.30465×1024  a.u.  a.u. of time 
3.65253×107    blink 
365.253  d  day 
366.254  d (sider.)  day (sidereal) 
26.0895    fortnight 
8766.08  h  hour 
3.35736×1030    Jordan's elementary time 
3.15579×1013  ms  microsecond 
3.15579×1010  ms  millisecond 
5.25965×105  min, mn  minute 
12.1751    month (30 days) 
13.3686    month (sidereal) 
12.0083    month (solar mean) 
12.3686    month (synodic), lunar month 
3.15579×1016  ns  nanosecond 
3.15579×107  s  second 
3.15579×1015    shake 
52.179  w  week 
9.46736×1016    wink 
1.00069  a, y  year (calendar) 
0.999991    year (sidereal) 
1.00001  a, y  year (solar mean) 
1.00003  atrop.  year (tropical) 
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