पञ्चसिद्धान्तिका (आचार्य वराहमिहिर - सूर्य, रोमक, पौलिश, वासिष्ठ एवं पितामह सिद्धान्त)

XVII.10 XVII. SAURA: TRUE PLANETS 307
Fourth step
An. conj. = Śīghra-corrected mean
= 87° 16′ − 18° 57′ = 68° 19′.
Bhuja degrees = 68° 19′. Koṭi degrees = 21° 41′
Bhuja = 111′ 29″. Koṭi = 44′ 19″.
Bhuja-result = 111′ 29″ × 260° ÷ 360° = 80° 31′
Koṭi-result = 44′ 19″ × 260° ÷ 360° = 32′ 0″.
As an. conj is from 270° to 90°, additive to 120°. So, 32′ 0″ + 120′ = 152′ 0″.
Bhuja-result × 120 ÷ √(Bhuja-result² + 152²) = 62′ 12″.
Arc sine = 62′ 12″. Half arc = 31° 14′, additive as an. conj is 0° to 180°.
Geocentric true Venus = 18° 57′ + 31° 14′ = 50° 11′.
In verse 11 below, VM requires us to subtract 67′ or 1° 7′ constant, as bīja-correction, after all
work is over. So, geocentric True Venus = 50° 11′ − 1° 7′ = 49° 41′.
[बुधशुक्रयोः विशेषक्रिया]
सर्वे स्फुटाः स्युरेवं ज्ञस्य तु शीघ्राद्विहाय रविमन्दम् ।
रविपरिधिनतं बाहुं (बुधेऽर्कवत्) क्षयधने कुर्यात् ॥ १० ॥
शुक्रस्य सप्त(षष्टि)र्लिप्ताः शोध्याः स्फुटीकृ(तस्यै)व ।
Special work for Mercury and Venus
10. All star-planets are (geocentrically) made true in the above manner. But
in the case of Mercury, this additional work is to be done: Subtract its apogee
from the śīghra and, using the Sun’s epicycle, find the bhuja-result and apply
it to the mean Mercury (which, of course, is the same as the Sun’s), with the
addition or subtraction done, as the Sun’s bhuja-result is additive or subtractive.
11 a-b. From Venus, subtract 67′, constant, after all the earlier sphuṭa work
instructed has been done.
Note 1. The reading kṣayadhane is better as it is, and TS need not have corrected it into
kṣayadhānam. The reading budhavat is deficient by two syllables, Lalla’s reading budherkavat supplies
these and makes the meaning more clear. So I have adopted it. TS’s emendation budhaphalavat,
with phala added for the two mātrās wanting, is not different in meaning from budhavat. Being an
arbitrary rule, we cannot decide which gives the original meaning, budherkavat or budhavat. But
since Lalla’s reading is not defective, at least as far as the mātrās are concerned, I have adopted it.
10a. B. omस्फूटः B. कोरेवं           11a. A. व्यष्टिः; B. व्यष्टि
b. A2. ज्ञस्य पुर्शी; B. ज्ञेक्यं धुशीघ्रा; D. ज्ञेइयेषु शी    b. A.B. शोध्या A. स्फुटिकृतस्यैव; B. स्फुटितस्यैव
c. A2. बाहु; B. वादं              (B2.3. ॰त्त तस्यैव)
d. A.B. बुधवक्ष; C. बुध्फलवत्; D. बुधे (क) व(ौ) क्षयधनं