Bīrūnī, Muḥammad ibn Aḥmad, Alberuni's India (v. 2)

(London :  Kegan Paul, Trench, Trübner & Co.,  1910.)

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  Page 17  



CHAPTER L.
 

17
 

The computation of these cycles rests on the mean cycles of
motion of the planets.    As a caturyuga is, according to in&catur-
Brahmagupta, the one-thousandth part of a kalpa, we kaliyuga.
have   only  to   divide these cycles by   looo, and the
quotient is the number of the star-cycles in one catur¬
yuga.

Likewise, if we divide the cycles of the table by
10,000, the quotient is the number of the star-cycles in
a kaliyuga, for this is one-tenth of a caturyuga. The
fractions which may occur in those quotients are raised
to wholes, to caturyugas or kaliyugas, by being multi¬
plied by a number equal to the denominator of the
fraction.

The following table represents the star-cycles speci¬
ally in a caturyuga and kaliyuga, not those in a man¬
vantara. Although the manvantaras are nothing but
multiplications of whole caturyugas, still it is difficult
to reckon with them on account of the samdhi which
is attached both to the beginning and to the end of
them.
 

Page 210.
 

The names of the planets.
 

Their revolutions
in a Caturyuga.
 

Their revolutions
in a Kaliyuga.
 

Sun.....
 

4,320,000
 

432,000
 

His apsis .
 


 


 

oil
 

n   CO
 

Moon   .
 


 


 

57,753,300
 

5,775,330
 

5j -^ J Brahmagupta
 


 


 

488,1054^
 

48,810111^
 

M g'l Aryabhata
 


 


 

488,219
 

48,821 JL
 

Her anomalistic revolution
 

57,265, i945Vi5-
 

5,726,5i9MH
 

TBrahmagupta.
 

232.31 ItVo
 

23,23 IttWo-
 

^ r§ J The  translation   of
 


 


 

M § 1     Alfazari
 

232,31 2/Vt
 

o-j   0-1 I 1 0 6 9
 

^Aryabhata
 


 


 

232,316
 

23,231!
 

Mars    .
 


 


 

2,296,828|fi
 

229,682||6t
 

His apsis
 


 


 


 


 

0/5% '
 

05-iw
 

His node
 


 


 


 


 

r, 2 s 7
 

n   2 0 7
 

Mercury
 


 


 


 


 

17,936,998^
 

i.793,699TMt
 

His apsis
 


 


 


 


 

om
 

O2 oTTT
 

His node
 


 


 


 


 

r, 52 1

o-iuTjxr
 

n   52 1
OiTrTTrTr
 

Jupiter
 


 


 


 


 

364,226^VTr
 

36,422it|i
 

His apsis
 


 


 


 


 

OTTrir
 

r, 1 71

osfrTSTr
 

His node
 


 


 


 


 

n   6 .3
 

OrTTUTTTr
 

VOL. II.
  Page 17