How many tropical year in 1 millisecond? The answer is 3.1688765172731E-11. We assume you are converting between tropical year and millisecond. You can view more details on each measurement unit: tropical year or millisecond The SI base unit for time is the second. 1 second is equal to 3.1688765172731E-8 tropical 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 tropical year to millisecond = 31556925445 millisecond
2 tropical year to millisecond = 63113850890 millisecond
3 tropical year to millisecond = 94670776335 millisecond
4 tropical year to millisecond = 126227701780 millisecond
5 tropical year to millisecond = 157784627225 millisecond
6 tropical year to millisecond = 189341552670 millisecond
7 tropical year to millisecond = 220898478115 millisecond
8 tropical year to millisecond = 252455403560 millisecond
9 tropical year to millisecond = 284012329005 millisecond
10 tropical year to millisecond = 315569254450 millisecond
You can do the reverse unit conversion from millisecond to tropical year, or enter any two units below:
The mean tropical year is defined as the period of time for the mean ecliptic longitude of the Sun to increase by 360 degrees. Since the Sun's ecliptic longitude is measured with respect to the equinox, the tropical year comprises a complete cycle of the seasons; because of the biological and socio-economic importance of the seasons, the tropical year is the basis of most calendars.
The International Union of Pure and Applied Chemistry and the International Union of Geological Sciences have jointly recommended using defining the annus, with symbol a, as the length of the tropical year in the year 2000:
a = 31556925.445 seconds (approximately 365.24219265 ephemeris days)
We default to using the Gregorian year on this site, but you can select a specific type of year by entering the full name like "tropical year".
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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