What is 15d-sr in Sidereal Seconds?

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What is 15 Sidereal Days (15d-sr) in Sidereal Seconds (s-sr)?

What is 15d-sr in s-sr? Convert 15 Sidereal Days (15d-sr) to Sidereal Seconds (s-sr) and show formula, brief history on the units and quick maths for the conversion.

Enter Sidereal Days to convert to Sidereal Seconds


Quick Reference for Converting Sidereal Days to Sidereal Seconds

Formula
s-sr = d-sr x 86400
Quick Rough Maths
To get the Sidereal Seconds, multiply the number of Sidereal Days by 86.4 thousand
Sidereal Days (d-sr) in 1 Sidereal Second
There are 0 Sidereal Days in 1 Sidereal Second
Sidereal Seconds (s-sr) in 1 Sidereal Day
There are 86400 Sidereal Seconds in 1 Sidereal Day

Unit Information

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).

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.


Conversion Tables for Sidereal Days (d-sr) to Sidereal Seconds (s-sr)