To convert sidereal years to decades, multiply the value by 0.100004. To go the other way, multiply decades by 9.99962 to get sidereal years.
| Sidereal Years (sid yr) | Decades (dec) |
|---|---|
| 1 sid yr | 0.100004 dec |
| 2 sid yr | 0.200008 dec |
| 3 sid yr | 0.300011 dec |
| 4 sid yr | 0.400015 dec |
| 5 sid yr | 0.500019 dec |
| 6 sid yr | 0.600023 dec |
| 7 sid yr | 0.700027 dec |
| 8 sid yr | 0.80003 dec |
| 9 sid yr | 0.900034 dec |
| 10 sid yr | 1.00004 dec |
| 12 sid yr | 1.20005 dec |
| 14 sid yr | 1.40005 dec |
| 15 sid yr | 1.50006 dec |
| 20 sid yr | 2.00008 dec |
| 21 sid yr | 2.10008 dec |
| 24 sid yr | 2.40009 dec |
| 25 sid yr | 2.50009 dec |
| 30 sid yr | 3.00011 dec |
| 40 sid yr | 4.00015 dec |
| 50 sid yr | 5.00019 dec |
| 60 sid yr | 6.00023 dec |
| 75 sid yr | 7.50028 dec |
| 80 sid yr | 8.0003 dec |
| 100 sid yr | 10.0004 dec |
| 200 sid yr | 20.0008 dec |
| 250 sid yr | 25.0009 dec |
| 300 sid yr | 30.0011 dec |
| 400 sid yr | 40.0015 dec |
| 500 sid yr | 50.0019 dec |
| 750 sid yr | 75.0028 dec |
| 1,000 sid yr | 100.004 dec |
Sidereal year (sid yr). A sidereal year is 365.256363 days, one orbit of the Sun relative to the stars.
Decade (dec). A decade is 10 years.
There are 0.100004 decades in one sidereal year.
Multiply the number of sidereal years by 0.100004. For example, 10 sidereal years equal 1.00004 decades.
One decade equals 9.99962 sidereal years.
1.20005 decades. Other common values: 5 sidereal years = 0.500019 decades and 100 sidereal years = 10.0004 decades.