What is 57000hr-sr in Sidereal Years?

You are: Home > Time > Sidereal Hours to Sidereal Years

What is 57000 Sidereal Hours (57000hr-sr) in Sidereal Years (a-sr)?

What is 57000hr-sr in a-sr? Convert 57000 Sidereal Hours (57000hr-sr) to Sidereal Years (a-sr) and show formula, brief history on the units and quick maths for the conversion.

Enter Sidereal Hours to convert to Sidereal Years


Quick Reference for Converting Sidereal Hours to Sidereal Years

Formula
a-sr = hr-sr / 8790.15
Quick Rough Maths
To get the Sidereal Years, divide the number of Sidereal Hours by 8.8 thousand
Sidereal Hours (hr-sr) in 1 Sidereal Year
There are 8790.15 Sidereal Hours in 1 Sidereal Year
Sidereal Years (a-sr) in 1 Sidereal Hour
There are 0 Sidereal Years in 1 Sidereal Hour

Unit Information

Sidereal Hour
/sʌɪˈdɪərɪəlˈaʊə/
Symbol: hr-sr
Unit System: SI

What is the Sidereal Hour?

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

1 sidereal hour is made up of 60 sidereal minutes. This is derived ultimately from the sidereal day which is the time taken (in solar seconds) for the Earth to complete one rotation with respect to a distant star or constellation.

The sidereal hour angle is used when calculating sidereal time which is actually the angle along the celestial equator; from where one stands to the great circle that travels through the March equinox and both celestial poles.

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.


Conversion Tables for Sidereal Hours (hr-sr) to Sidereal Years (a-sr)