How many sidereal year in 1 sidereal month? The answer is 0.074801331418396. We assume you are converting between sidereal year and sidereal month. You can view more details on each measurement unit: sidereal year or sidereal month The SI base unit for time is the second. 1 second is equal to 3.1687536047488E-8 sidereal year, or 4.2362262070237E-7 sidereal month. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between years and months. 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 sidereal month = 13.36875 sidereal month
2 sidereal year to sidereal month = 26.73749 sidereal month
3 sidereal year to sidereal month = 40.10624 sidereal month
4 sidereal year to sidereal month = 53.47498 sidereal month
5 sidereal year to sidereal month = 66.84373 sidereal month
6 sidereal year to sidereal month = 80.21248 sidereal month
7 sidereal year to sidereal month = 93.58122 sidereal month
8 sidereal year to sidereal month = 106.94997 sidereal month
9 sidereal year to sidereal month = 120.31871 sidereal month
10 sidereal year to sidereal month = 133.68746 sidereal month
You can do the reverse unit conversion from sidereal month 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 sidereal month is defined as the Moon's orbital period in a non-rotating frame of reference (which on average is equal to its rotation period in the same frame). It is about 27.32166 days (27 days, 7 hours, 43 minutes, 11.6 seconds). The exact duration of the orbital period cannot be easily determined, because the 'non-rotating frame of reference' cannot be observed directly. However, it is approximately equal to the time it takes the Moon to pass twice a "fixed" star (different stars give different results because all have proper motions and are not really fixed in position).
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