How many sidereal year in 1 millisecond? 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 millisecond The SI base unit for time is the second. 1 second is equal to 3.1687536047488E-8 sidereal year, or 1000 millisecond. 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 millisecond = 31558149504 millisecond
2 sidereal year to millisecond = 63116299008 millisecond
3 sidereal year to millisecond = 94674448512 millisecond
4 sidereal year to millisecond = 126232598016 millisecond
5 sidereal year to millisecond = 157790747520 millisecond
6 sidereal year to millisecond = 189348897024 millisecond
7 sidereal year to millisecond = 220907046528 millisecond
8 sidereal year to millisecond = 252465196032 millisecond
9 sidereal year to millisecond = 284023345536 millisecond
10 sidereal year to millisecond = 315581495040 millisecond
You can do the reverse unit conversion from millisecond 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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