Later siddhāntas & al-Bīrūnī · core text c. 400–600 CE
अभिजिद् ब्रह्महृदयम् स्वातीवैष्णववासवाः / अहिर्बुध्न्यम् उदक्स्थत्वान् न लुप्यन्ते ऽर्करश्मिभिः //
18. ... and Uttara-Bhādrapadā (ahirbudhnya), owing to their northern situation, are not extinguished by the sun's rays. — E. Burgess (1860)
Deity-epithet name for Uttara-Bhādrapadā, whose divinity is Ahir Budhnya, 'the serpent of the deep', used at SS 9.18. Burgess notes the internal tension that this star, of the second magnitude, is left in the unspecified 17° class at 9.15 yet appears here among those never obscured. Al-Bīrūnī's never-setting list likewise ends with Uttarabhādrapadā.
Sūrya Siddhānta 9.18 · text · translation