Surya Siddhanta
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कुजार्किगुरुपातानाम् ग्रहवच् छीघ्रजम् फलम् । वामम् तृतीयकम् मान्दम् बुधभार्गवयोः फलम् ॥
Add or subtract the 2nd equations of Mars, Saturn and Jupiter (found in the 4th operation) to or from their nodes according, as the 2nd equations applied to the (rectified mean) places of the planets: but in respect of Mercury and Venus add or subtract their 1st equations (found in the 3rd operation, to or from their nodes) according as their 1st equations are subtractive or additive respectively (the results are the rectified nodes).
english translation
kujArkigurupAtAnAm grahavac chIghrajam phalam । vAmam tRtIyakam mAndam budhabhArgavayoH phalam ॥
hk transliteration by Sanscriptस्वपातोनाद् ग्रहाज् जीवा शीघ्राद् भृगुजसौम्ययोः। विक्षेपघ्न्य् अन्त्यकर्णाप्ता विक्षेपस् त्रिज्यया विधोः॥
(For the argument of latitude of each of the planets[1] Mars, Jupiter and Saturn) take its rectified node from its true place: but for (the argument of latitude of) Mercury or Venus take its rectified node from its Śíghrochcha; find the sine (of the argument of latitude of a planet); multiply it by the (greatest) latitude of the planet (mentioned in S'loka 70th of 1st Chapter) and divide the product by the 2nd hypothenuse found in the 4th operation; but in respect of the Moon divide it by the radius: the quotient will be the latitude (of the planet).
english translation
svapAtonAd grahAj jIvA zIghrAd bhRgujasaumyayoH। vikSepaghny antyakarNAptA vikSepas trijyayA vidhoH॥
hk transliteration by Sanscriptविक्षेपापक्रमैकत्वे क्रान्तिर् विक्षेपसम्युता ।दिग्भेदे वियुता स्पष्टा भास्करस्य यथागता ॥
The (mean) declination (of a planet or the declination found by computation from its corresponding point in the ecliptic) increased or diminished by its latitude, according as they are both of the same or different denominations, becomes the true (declination of the planet). But the Sun's (true declination) is (the same as) his mean declination.
english translation
vikSepApakramaikatve krAntir vikSepasamyutA ।digbhede viyutA spaSTA bhAskarasya yathAgatA ॥
hk transliteration by Sanscriptग्रहोदयप्राणहता खखाष्टैकोद्धृता गतिः। चक्रासवो लब्धयुता स्वाहोरात्रासवः स्मृताः॥
Multiply the diurnal motion (in minutes) of a planet by the number of Práṇas which the sign, in which the planet is, takes in its rising (at a given place;) divide the product by 1800′ (the number of minutes which each sign of the ecliptic contains in itself,) add the quotient, in Práṇas, to the number of the Práṇas contained in a (sidereal) day; the sum will be the number of Práṇas contained in the day and night of that planet (at the given place).
english translation
grahodayaprANahatA khakhASTaikoddhRtA gatiH। cakrAsavo labdhayutA svAhorAtrAsavaH smRtAH॥
hk transliteration by Sanscriptक्रान्तेः क्रमोत्क्रम्मज्ये द्वे कृत्वा तत्रोत्क्रमज्यया । हीना त्रिज्या दिनव्यासदलम् तद्दक्षिणोत्तरम् ॥
Find the right and versed sines of the declination (of a planet): take the versed sine (just found) from the radius, the remainder will be the radius of the diumal circle south or north of the equinoctial. (This radius is called Dyujyá).
english translation
krAnteH kramotkrammajye dve kRtvA tatrotkramajyayA । hInA trijyA dinavyAsadalam taddakSiNottaram ॥
hk transliteration by Sanscript