Brihat Samhita
प्राग् वैश्वानर मार्गे शूलाग्रः श्यावरूक्षताम्रार्चिः । नभसस्त्रिभागगामी रौद्र इति कपालतुल्यफलः ॥ ११-३२ ॥
Raudra Ketu is a comet resembling the dagger’s end and is of a dull red colour; it appears in the south-east and travels through a third of the sky and produces the same effects as the Kapāla Ketu.
english translation
prAg vaizvAnara mArge zUlAgraH zyAvarUkSatAmrArciH । nabhasastribhAgagAmI raudra iti kapAlatulyaphalaH ॥ 11-32 ॥
hk transliteration by Sanscript