Convert tropical year to sidereal year
Here you can quickly calculate how many sidereal year fit in one tropical year.
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- scroll: formula · table · questions -
- 1 = 0.999961
- 1 = 1.000039
Example: tropical year to sidereal year
- 1 tropical year = 0.999961 sidereal year
Tropical year to sidereal year conversion table
| tropical year | sidereal year |
|---|---|
| 1 | 0.999961 |
| 2 | 1.999922 |
| 5 | 4.999806 |
| 10 | 9.999612 |
| 20 | 19.999224 |
| 50 | 49.998061 |
| 100 | 99.996121 |
Tropical year to sidereal year formula
To convert tropical year to sidereal year, multiply by 0.999961.
1 = 0.999961
Example: 1 tropical year = 0.999961 sidereal year
Common time conversion mistakes
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There are several year definitions: the Julian year is exactly 365.25 days, the Gregorian calendar year 365.2425, and the tropical year about 365.2422 days. For everyday use the differences are negligible, but they matter in astronomy, the light-year, for instance, is defined using the Julian year.
Quick tropical year and sidereal year conversion quiz
Score:
0
1 sidereal year equals 0.9 tropical year.
Correct answer: 1 sidereal year = 1 tropical year.
19.8 tropical year equals 19.8 sidereal year.
Correct answer: 19.8 tropical year = 19.8 sidereal year.
2.3 sidereal year equals 2.3 tropical year.
Correct answer: 2.3 sidereal year = 2.3 tropical year.