The Astronomical Observatories of Jai Singh c15.s1.t4.7

c15.s1.t4.7

| . | First calculation for equation of conjunction. | Second calculation for equation of apsis. | Third calculation for equation of apsis. | Fourth calculation for equation of conjunction. |
| Longitude . . | 8s 18° 13′ | + 26° 7′ / 2 = 9° 17′ | + 22′ / 2 = 9° 1′ 28″ | 8s 18° 13′ + 23′ = 8s 18° 36′ = 2s 3° 37′ - 23′ = 2s 3° 14′ |
| a. Mean commutation = C-L | 2s 3° 37′ | . . | . . | . . |
| a'. Equated anomaly = A-L | . . | 5 18° 35′ | - 22′ / 2 = 5° 18° 24′ | . . |
| b. Bhujajyā = Sin a or a' | 3080′ | 689′ | 691′ | 3069′ |
| c. Kotijyā = Cos a or a' | 1527′ | 3369′ | 3368′ | 1521′ |
| d. Correction for epicycle = Δ | 1° 47′ | 12′ | 12′ | . . |
| e. Corrected epicycle = E-d | 260° 13′ | 11° 48′ | 11° 48′ | 260° 13′ |
| f. = be / 360° | 2226′ | 22·3′ | 22·6′ | 2218′ |
| g. = ce / 360° | 1104′ | 110′ | 110·4′ | 1118′ |
| h. Chala karna = √(r±g)² + f² | 5058′ | 3548′ | 3458′ | 5067′ |
| i. = rf / h | 1515 | 21·9′ | 22·5′ | 1505′ |
| j. = sin⁻¹ i | + 26° 7′ | + 0° 22· | + 0° 23′ | + 25° 59′ |
| The true longitude is therefore | . . | 8s 18° 36′ | + 25° 59′ | = 9s 14° 35′ |