Hour (Sidereal) to Minute (Sidereal) Converter
Unit Converter
Instant · Precise · Universal
28 units available
6 categories total
How to Convert Hour (Sidereal) to Minute (Sidereal)
To convert sidereal hours to solar seconds: multiply by 3,590.17. To solar hours: multiply by 0.99727.
1 sidereal hour = 3,590.17 solar seconds ≈ 59 min 50.17 s in solar time. 24 sidereal hours = 1 sidereal day.
For example, 1 Hour (Sidereal) (h (Sid)) = 60.00000334 Minute (Sidereal) (min (Sid)).
Hour (Sidereal) to Minute (Sidereal) — Common Values
| Hour (Sidereal) (h (Sid)) | Minute (Sidereal) (min (Sid)) |
|---|---|
| 0.1 | 6.000000334 |
| 0.5 | 30.00000167 |
| 1 | 60.00000334 |
| 2 | 120.0000067 |
| 5 | 300.0000167 |
| 10 | 600.0000334 |
| 25 | 1500.000084 |
| 50 | 3000.000167 |
| 100 | 6000.000334 |
| 500 | 30000.00167 |
| 1000 | 60000.00334 |
About Hour (Sidereal) (h (Sid))
Definition
The sidereal hour is 1/24 of a sidereal day — approximately 3,590.17 seconds (59 minutes and 50.17 seconds in solar time).
Mathematical Relationship
1 sidereal hour = 3,590.17 solar seconds ≈ 59 min 50.17 s in solar time. 24 sidereal hours = 1 sidereal day.
Conversion Formula
To convert sidereal hours to solar seconds: multiply by 3,590.17. To solar hours: multiply by 0.99727.
Practical Applications
Right ascension in celestial coordinates is measured in hours (0–24 h of sidereal time), directly using sidereal hours.
Interesting Facts
Right ascension is measured in hours: 1 h of RA = 15° of sky. The entire sky is 24 sidereal hours in rotation.
Common Mistakes
Treating sidereal hours as exactly 60 solar minutes. The ~10-second difference matters for precision tracking.
Educational Tips
If you use a star-tracking telescope, it rotates once per sidereal day (23h 56m). Each sidereal hour, it covers 15° of sky.
About Minute (Sidereal) (min (Sid))
Definition
The sidereal minute is 1/60 of a sidereal hour — approximately 59.836 seconds in solar time.
Mathematical Relationship
1 sidereal minute = 59.836 solar seconds. 60 sidereal minutes = 1 sidereal hour.
Conversion Formula
To convert sidereal minutes to solar seconds: multiply by 59.836. To solar minutes: multiply by 0.99727.
Practical Applications
Precise observation timing, transit event recording, and telescope tracking rate calibration.
Interesting Facts
A sidereal minute is about 0.164 seconds shorter than a solar minute — small but significant over an observing session.
Common Mistakes
Using solar minutes when sidereal minutes are required in astronomical calculations — the error accumulates over time.
Educational Tips
Sidereal minutes/seconds are just slightly shorter than their solar counterparts. The ratio is always ~0.99727.