ब्राह्मस्फुटसिद्धान्त (ब्रह्मगुप्त - शून्य, कुट्टक, बीजगणित एवं सम्पूर्ण २१ अध्याय सान्वय सटीक)

ARABIC AND INDIAN DIVISIONS OF THE ZODIAC 281
It may be mentioned here that Brahmagupta and Bhāskara
selected the southern for the principal star; while the Sūrya-
Siddhānta took the northern. Hence the latitude stated by
several Hindu authorities is the mean between both stars; and
the difference of longitude, compared to the preceding and subse-
quent asterisms, may be exactly reconciled upon this suppo-
sition.
12. Uttara-Phalgunī, which is the twelfth nakṣatra, con-
sists of two stars, and is figured as a bed or cot. These stars are
ascertained by the place of one of them (the northernmost) 13°N.
and 155° E. This indicates β Leonis; the same which singly
constitutes the Arabian Lunar mansion Serfah, though Moham-
mad of Tīzīn seems to hint that it consists of more than one
star.
13. Hasta, the thirteenth nakṣatra, has the name and figure
of a hand; and is suitably made to contain five stars. The
principal one towards the west, next to the north-western star,
is placed according to all authorities in 11° and 170° E. This
can only belong to the constellation Corvus ; and accordingly
five stars in that constellation (α, β, γ, δ and ε Corvi). The
thirteenth lunar mansion of Arabs is Awwā, which is also
described to contain five stars, situated under Virgo and so
disposed as to resemble the letter Alif. They are placed by
Ulugh Beg in the wing. Here obviously, there is nothing common
between the Hindu and Arabian specification of the asterism.
The agreement is only in the number of stars and in the longi-
tude.
14. Citrā, the fourteenth nakṣatra, is figured as pearl. It
is placed by the Sūrya-Siddhānta in 2° S and 180° E. and by
Brahmagupta, the Śiromaṇi and Grahalāghava in 1¾ or 2°S and
183°E. This agrees with the Virgin's spike (α Virginis). The
same star constitutes the fourteenth lunar mansion of the Arabs
named from it Simāc ul aāzi.
15. Svāti, the fifteenth nakṣatra, is represented by a coral
bead. The Sūrya-Siddhānta, Brahmagupta, the Śiromaṇi and
Grahalāghava, all concur in placing it at 37°N. They differ one
degree in longitude of its circle of declination, three of them