How many second in 1 millidegree? The answer is 3.6. We assume you are converting between arcsecond and millidegree. You can view more details on each measurement unit: second or millidegree The SI derived unit for angle is the radian. 1 radian is equal to 206264.8062471 second, or 57295.779513082 millidegree. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between arcseconds and millidegrees. Type in your own numbers in the form to convert the units!
1 second to millidegree = 0.27778 millidegree
5 second to millidegree = 1.38889 millidegree
10 second to millidegree = 2.77778 millidegree
20 second to millidegree = 5.55556 millidegree
30 second to millidegree = 8.33333 millidegree
40 second to millidegree = 11.11111 millidegree
50 second to millidegree = 13.88889 millidegree
75 second to millidegree = 20.83333 millidegree
100 second to millidegree = 27.77778 millidegree
You can do the reverse unit conversion from millidegree to second, or enter any two units below:
A second of arc or arcsecond is a unit of angular measurement which comprises one-sixtieth of an arcminute, or 1/3600 of a degree of arc or 1/1296000 (approximately 7.7×10-7) of a circle. It is the angular diameter of an object of 1 unit diameter at a distance of 360×60×60/(2pi) (approximately 206,265 units), such as (approximately) 1 cm at 2.1 km, or, directly from the definition, 1 astronomical unit at 1 parsec.
The SI prefix "milli" represents a factor of 10-3, or in exponential notation, 1E-3.
So 1 millidegree = 10-3 degrees.
The definition of a degree is as follows:
A degree (or in full degree of arc), usually symbolized by the symbol °, is a measurement of plane angles, or of a location along a great circle of a sphere (such as the Earth or the celestial sphere), representing 1/360 of a full rotation.
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