What is 7s-sr in Hours?

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What is 7 Sidereal Seconds (7s-sr) in Hours (hr)?

What is 7s-sr in hr? Convert 7 Sidereal Seconds (7s-sr) to Hours (hr) and show formula, brief history on the units and quick maths for the conversion.

Enter Sidereal Seconds to convert to Hours


Quick Reference for Converting Sidereal Seconds to Hours

Formula
hr = s-sr / 3609.86
Quick Rough Maths
To get the Hours, divide the number of Sidereal Seconds by 3.6 thousand
Sidereal Seconds (s-sr) in 1 Hour
There are 3609.86 Sidereal Seconds in 1 Hour
Hours (hr) in 1 Sidereal Second
There are 0 Hours in 1 Sidereal Second

Unit Information

Sidereal Second
/sʌɪˈdɪərɪəlˈsɛk(ə)nd/
Symbol: s-sr
Unit System: SI

What is the Sidereal Second?

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

1 sidereal second is 1/60 of a sidereal minute. 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.

Like with normal seconds, minutes, hours and days, there are still 60 x 60 x 24 seconds in a day, but the day itself is approximately 23 h 56 min and 4.1 s in (normal) seconds.

Hour
/ˈaʊə/
Symbol: hr
Unit System: SI

What is the Hour?

The hour is a unit of time and is a multiple of an SI base unit with the symbol hr.

There are 60 seconds in a minute and 60 minutes in an hour. Consequently, there are 3600 seconds in an hour.

In a mean solar day, there are 24 hours.

Originally in the Middle East, the hour was defined as 1/12 of the day or night time. However, seasonal factors clearly affected all of these definitions and an average is used today to normalise and allow calculations.


Conversion Tables for Sidereal Seconds (s-sr) to Hours (hr)