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"""
"""
from ._utils import _cd
from ..uncertainquantity import UncertainQuantity
from ..unitquantity import UnitConstant
au = astronomical_unit = UnitConstant(
'astronomical_unit',
UncertainQuantity(149597870700, 'm', 3),
symbol='au',
doc='http://en.wikipedia.org/wiki/Astronomical_unit'
)
G = Newtonian_constant_of_gravitation = UnitConstant(
'Newtonian_constant_of_gravitation',
_cd('Newtonian constant of gravitation'),
symbol='G'
)
del UnitConstant, UncertainQuantity, _cd
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