Convert Sidereal Years (a-sr) to Sidereal Days (d-sr) | a-sr in d-sr

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Let's convert Sidereal Years (a-sr) to Sidereal Days (d-sr)

This quick and easy calculator will convert Sidereal Years (a-sr) to Sidereal Days (d-sr) and show formula, brief history on the units and quick maths for the conversion.

Enter Sidereal Years to convert to Sidereal Days


Quick Reference for Converting Sidereal Years to Sidereal Days

Formula
d-sr = a-sr x 366.26
Quick Rough Maths
To get the Sidereal Days, multiply the number of Sidereal Years by 366.3
Sidereal Years (a-sr) in 1 Sidereal Day
There are 0 Sidereal Years in 1 Sidereal Day
Sidereal Days (d-sr) in 1 Sidereal Year
There are 366.26 Sidereal Days in 1 Sidereal Year

Unit Information

Sidereal Year
/sʌɪˈdɪərɪəl jɪə,jəː/
Symbol: a-sr
Unit System: SI

What is the Sidereal Year?

The sidereal year is a unit of time that is a multiple of an SI unit. We have used the symbol a-sr.

From the Latin ‘sidus’ for ‘star’, sidereal is a term used to describe the orbital time of the earth or an object to complete one full cycle with respect to a fixed, distant star or constellation pattern.

The sidereal year is defined as 365.242 190 402 days of 86,400 SI seconds. This is 20 minutes and 24.5 seconds longer than a tropical year.

Sidereal Day
/sʌɪˈdɪərɪəl deɪ/
Symbol: d-sr
Unit System: SI

What is the Sidereal Day?

The sidereal day is a unit of time used by astronomers and is derived from the SI unit system. We have used the symbol d-sr.

Sidereal literally means "of the stars". Otherwise known as the "orbital period", it defines the time period taken for two point masses to orbit each other.

On Earth, we used the solar day to regularise time and this represents the period taken to orbit the sun. The sidereal day (or stellar day) is the time taken for the earth to rotate with respect to a distant star and equals 23 hours, 56 minutes and 4.0905 seconds (or 86164.1 s, 23.934 h).


Conversion Tables for Sidereal Years (a-sr) to Sidereal Days (d-sr)