बृहत्संहिता (आचार्य वराहमिहिर - स्थापत्य, खगोल, मौसम व जल विज्ञान)

Adh. XI. Sl. 1-5] एकादशोऽध्यायः 127 केतुचारः ॥११॥ Ketu. गार्गीयं शिखिचारं पाराशरमसितदेवलकृतं च । अन्यांश्च बहून् दृष्ट्वा क्रियतेऽयमनाकुलश्चारः ॥१॥ Sloka 1.—Having comprehended the peculiarities of Ketu's transit as treated of by sages Garga, Parasara, Asita, Devala and many others, I expound the same in the most unambiguous manner. दर्शनमस्तमयो वा न गणितविधिनास्य शक्यते ज्ञातुम् । दिव्यान्तरिक्षभौमास्त्रिविधाः स्युः केतवो यस्मात् ॥२॥ Sloka 2.—It is not possible to find out by calculation the rising or setting of Ketu, inasmuch as there are three sorts of Ketus, viz., celestial, atmospheric and terrestrial. अहुताशेऽनलरूपं यस्मिंस्तत्केतुरूपमेवोक्तम् । खद्योतपिशाचालयमणिरत्नादीन् परित्यज्य ॥३॥ Sloka 3.—In places where, though there is no fire, there is still an igneous appearance, Ketu's presence is recognised except where there are glow-worms, phos- phoric lights on graves, gems, jewels and the like. ध्वजशस्त्रभवनतरुतुरगकुञ्जराद्येष्वथान्तरिक्षास्ते । दिव्या नक्षत्रस्था भौमाः स्युरतोऽन्यथा शिखिनः ॥४॥ Sloka 4.—The atmospheric Ketus are such as are seen on flagstaffs, weapons, houses, trees, horses, ele- phants and the like ; the celestial ones are those that are seen among the asterisms. Such as do not belong to the above two categories are to be known as terrestrial Ketus. शतमेकाधिकमेके सहस्रमपरे वदन्ति केतूनाम् । बहुरूपमेकमेव प्राह मुनिर्नारदः केतुम् ॥५॥