Solar year of earth orbit:
1. Old Surya Siddhanta 365.25875 days
2. Modern Surya Siddhanta 365.258756 days
3. Surya Siddhanta of Varahimira 365.25875 days
4. Ardharatrika of Aryabhatta 365.25875 days
5. Aryabhatiya 365.25868 days
6. Brahmagupta 365.2584375 days
7. Ptolemy sideral 365.256813 days
8. Modern Sidereal 365.2563624 days
9. Modern Tropical 365.24219 days
10. Modern anomalistic year 365.25963 days
11. Hipparchus 365.24667 days
In what basis the decimal differences are fixed..?
Regards,
C.S.Mallish Kumar
Chennai
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