Brihat Samhita
शुक्लविपुलएकतारा नव विदिशां केतवः समुत्पन्नाः । एवं केतुसहस्रं विशेषं एषां अतो वक्ष्ये ॥ ११-२८ ॥
The comets that are white possessing a single disc are 9 in number; they appear in the four corners. Thus we have given an account of 1,000 Ketus. We shall now give a few particulars connected with them.
english translation
zuklavipulaekatArA nava vidizAM ketavaH samutpannAH । evaM ketusahasraM vizeSaM eSAM ato vakSye ॥ 11-28 ॥
hk transliteration by Sanscript