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

278 PAÑCASIDDHĀNTIKĀ XIV.41 The time (of conjunction) is to be known from the distance between the star and the Moon and the daily motion of the Moon. According to Varāhamihira, the measure of the Moon's diameter is 34 in terms of minutes and 15 in terms of digits. Hence the above rule.

Polar longitudes and latitudes of the Junction-stars

Junction-star of	Polar longitude	Polar latitude
Kṛttikā	32°40′	3.5 cubits or 3° 10′ 24″N
Rohiṇī	48°	5.5 cubits or 4° 59′ 12″S
Punarvasu (southern)	88°	8 cubits or 7° 15′ 12″ S
Punarvasu (northern)	88°	8 cubits or 7° 15′ 12″ N
Puṣya	97° 20′	3.5 cubits or 3° 10′ 24″ N
Āśleṣā (southern)	107° 40′	1 cubit or 54′ 24″ S
Āśleṣā (northern)	107° 40′	1 cubit or 54′ 24″ N
Maghā	126°	0
Citrā	180° 50′	3 cubits or 2° 43′ 12″ S
[अगस्त्योदयः]
विषुवच्छायार्धगुणा पञ्चकृति (स्तिथियुतं) ततश्चापम् ।
छायात्रिसप्तकयुतं दशभिर्गुणितं विनाड्यस्ताः ॥ ३९ ॥
ताभिः कर्कटकाद्याद्यल्लग्नं तादृशे सहस्रांशौ ।
याम्याशावनितामुखविशेषतिलको मुनिरगत्यः ॥ ४० ॥
गणितविषयोपलब्धच्छेदकयन्त्रैः प्रकाशतां याति ।
सुखयति मनांसि पुंसां दिव्यं कालाश्रयं ज्ञानम् ॥ ४१ ॥
Heliacal Rising of Canopus

39. Multiply the square of 5 (i.e. 25) by half the equinoctial midday shadow; (treating it as the Rsine of an arc) find the corresponding arc (in terms of degrees) and add 15 (degrees) to that. Multiply that by 10 and add 21 times the equinoctial midday shadow. These are vināḍīs. 39-40 Quoted by Utpala on BS 12.21 38a. B. ॰दशापनीय 39a. A. विषुवच्छाया B. द्विगुणा b. A. संगुणाकृता b. A.B. पंचकृतेस्तत्कलास्ततः; D. पञ्चकृतिस्तत्कला ततः c. A. ॰माणं c. A. छायानृसप्तक॰; B. छायात्तृप्तक A1. युत A.B. भोगोविरेण (B. ॰चिरेण); d. A.B. गुणिता