astronomical unit Comparison Table

Astronomy View all facts Glossary Help

abstraction > mathematical concept > unit > length unit > astronomical unit

Next length unit: Bohr radius Up: length unit, non SI unit Previous length unit: angstrom

astronomical unit comparison table

Subject has value in SI unit is an instance of is a kind of is a unit of has symbol has definition

length unit unit length

non SI unit unit not an SI unit, but an important and widely used unit

astronomical unit 1 au = 1.49598 × 10¹¹ m, approximately non SI unit length AU The radius of a circular orbit in which a body of negligible mass, and free of perturbations, would revolve around the Sun in 2π / k days, where k is the Gaussian gravitational constant. This is slightly less than the semi-major axis of the Earth's orbit.

Subject	has value in SI unit	is an instance of	is a kind of	is a unit of	has symbol	has definition
length unit			unit	length
non SI unit			unit			not an SI unit, but an important and widely used unit
astronomical unit	1 au = 1.49598 × 10¹¹ m, approximately	non SI unit		length	AU	The radius of a circular orbit in which a body of negligible mass, and free of perturbations, would revolve around the Sun in 2π / k days, where k is the Gaussian gravitational constant. This is slightly less than the semi-major axis of the Earth's orbit.

Next length unit: Bohr radius Up: length unit, non SI unit Previous length unit: angstrom