How many sidereal year in 1 ms? The answer is 3.1687536047488E-11. We assume you are converting between sidereal year and millisecond. You can view more details on each measurement unit: sidereal year or ms The SI base unit for time is the second. 1 second is equal to 3.1687536047488E-8 sidereal year, or 1000 ms. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between years and milliseconds. Type in your own numbers in the form to convert the units!
You may also want to find out how many days are between two dates on the calendar. Use the date calculatorto get your age in days or measure the duration of an event.
1 sidereal year to ms = 31558149504 ms
2 sidereal year to ms = 63116299008 ms
3 sidereal year to ms = 94674448512 ms
4 sidereal year to ms = 126232598016 ms
5 sidereal year to ms = 157790747520 ms
6 sidereal year to ms = 189348897024 ms
7 sidereal year to ms = 220907046528 ms
8 sidereal year to ms = 252465196032 ms
9 sidereal year to ms = 284023345536 ms
10 sidereal year to ms = 315581495040 ms
You can do the reverse unit conversion from ms to sidereal year, or enter any two units below:
A sidereal year (from Latin sidus "asterism, star") is the time taken by the Earth to orbit the Sun once with respect to the fixed stars. Hence it is also the time taken for the Sun to return to the same position with respect to the fixed stars after apparently travelling once around the ecliptic. It equals 365.25636 SI days for the J2000.0 epoch.
The SI prefix "milli" represents a factor of 10-3, or in exponential notation, 1E-3.
So 1 millisecond = 10-3 arcseconds.
The definition of a second is as follows:
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.
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