Spat (unit)

The spat (symbol sp), from the Latin spatium ("space"), is a unit of solid angle. 1 spat is equal to 4π steradians or approximately 41253 square degrees of solid angle. As such, it is the solid angle of a sphere.

The spat (symbol S) is also an obsolete unit of distance used in astronomy. It is equal to one 1000000000 kilometres (1 Tm or 10 m). It is about 6.6846 astronomical units (AU), 1.057×10 light-years or 3.240×10 parsecs.

单词	Unit solid angle
释义	Unit solid angle 英语百科 Spat (unit) The spat (symbol sp), from the Latin spatium ("space"), is a unit of solid angle. 1 spat is equal to 4π steradians or approximately 41253 square degrees of solid angle. As such, it is the solid angle of a sphere. The spat (symbol S) is also an obsolete unit of distance used in astronomy. It is equal to one 1000000000 kilometres (1 Tm or 10 m). It is about 6.6846 astronomical units (AU), 1.057×10 light-years or 3.240×10 parsecs.
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Unit solid angle

Spat (unit)