64 Mr. Piazzi’s Calculations of Longitude 
gitude at the end is 20" greater than the fum of the femi- 
diameters of the fun and moon, increafed in proportion of the 
apparent altitude of the moon : for this reafon I do not give the 
moon’s latitude in conjun£tion. As for the time of the con- 
jundtion, I deduce it both from the two phafes together, and 
from the commencement only, having previoufly corrected 
the moon’s latitude of the error which I difcovered in the 
tables, viz. ii // ,6. The time of conjundlion which refults 
from the firft calculation is 23 h. $ 6 / 1 \ " ; that which refults 
from the fecond 23 h. 56' 16" : this laft nearly agrees in the 
difference of meridians with the Ephemeris of Paris for the 
year 1789, and differs from the Requifite Tables by 2' 32". 
The following table reprefents, as the firft, the obfervations 
and the refults. 
Beginning. 
End. 
Conjun&ion. 
Longitude. 
Lati- 
tude. 
Difference 
of 
meridians. 
Warfaw, M. 
Bystrzyski 
E t u 
20 56 45 
e / // 
22 57 33 
h - , /, 
22 22 59,3 
/ // 
14 44 
/ // 
1 24 12 
Prague, M. 
Strnadt. 
20 21 29 
22 21 15 
21 56 30 
14 45 
0 57 42,7 
Marfeilles,M. 
Bernard. 
19 26 42 
21 29 23,5 
21 20 17,5 
14 40 
0 21 30,2 
Crefm under, 
M. Fixl- 
MILLNER. 
20 15 20 
22 19 50,7 
21 54 59 
h 23 
0 56 11,7 
Bagdad, M. 
de Beau- 
champ. ? 
22 30 51 
23 26 J9 
23 56 n 
% 
2 57 23,7 
