25 
M, Burckhardt calculated the tables. I 
correcied thé elements according to the 
late obfervations, and have had the fa- 
tisfaction to fee that the new ones are fo 
exact, that.no errors of any confequence 
can be found in the moft correct cblerva- 
tions of Mercury and Venus. 
M. Fiauguergues has calculated the 
equation of Mercery in tenths and {fe- 
cdnds, and the log*rithms to eight places. 
The following i is the laft inferior con- 
jun&tion of Venus, oblerved at Paris by 
Burckhardt and Lalande, my REBRC: : 
Mean time of th ie true conjunction, 
December 31, 35 15’ 343; and the true 
longitude, counted from the mean equi- 
Nox, gs 9° 19! 5!. 
It gives tor the corre&tinn of the pre- 
fent tables—13" in longitude, and—1” in 
Jatitude; but by means of the correétion 
which I made in the epochs and mean 
motions, there remains only 1’ of error 
for the longitude. I find in 1795, 1/7; 
in 1796, 2%; in 1798, 3"'5 in 1799, 3/5 
in 1801, zero: which proves that there is 
no change to be made in the new ele- 
ments. 
In the digreffion of March rag4 she 
M. Flaugvergues found + 21" and + ah 
In the month of May, 1804, =e 
will aftonifh the public by her great f{plen- 
dour; and fhailbe adliged to announce 
in our journals, that fhe is not a new ftar, 
nor an extraordinary comet. 
he oppofition of Mars at the end of 
1802—6" in longitude, -+ 2‘ in latitude, 
for the tables which Lalande, my nephew, 
publithed in tae Connoifance des Temps, 
for the year 12, 1804. 
M. Bouvard has reconftruSed the tables 
dF fipier, ae to cbfervations made 
for ten i empl loying equations of con- 
ditions, which give the means of veri- 
fying ailihe elements. He has brought 
them to fuch arto that the errors 
amount see to 10"; but the maf of Sa- 
. 
turn, redu Asi Is more exact ¢ ban 
that Hedueied £ from the fa:e' ‘lites. 
The oppofition of Jup ter gives —= 2! 
in lbaeitucde: 
The oppofition of Satura in the month 
of March, gave for the correction of the 
tables in longi:ude"— 17", and in latitude 
zevo.. But M. Bouvard will undertake 
the fame labour in regard to Saturn, as 
that which he has announced on Jupiter. 
“The difappearance of Saturn’s ring, ac- 
cording to ‘the Agigsey: tions of Duleidiirs 
will not take place till the end of June. 
Among the rare oblervations which M. 
Vidal has fent us, there is one very extra- 
ordinary. On the isih ot Oober, he 
x § 
Erijzory of Aftrencmy for the Year 1803. 
[Auguft 1, 
-obferved Jupiter and Venus at the fame 
time as the limb of the fun: they differed 
only ro! ia declination: he faw them to- 
gether in the field of the teleicope. He 
ob{erved Saturn in the meridian 20! before 
the fun. 
Olbers’s planet, difcovered on the 28th 
of March, 1802, has this year afforded 
occupation to ailthe aftronomers. It had 
been lof fince the 16th of O. ctober, 1802 
we were all impatient to {ce it again: M. 
Harding, of Lilienthal, firtt enjoyed this 
fatisfaction ; on the roth of February he 
faw i, like a tiar of the twelfth magai- 
tude. 
Qa the 11th of July, M. Burckhardt 
gave us the new elements, by which we 
can find it again in the,monta of March 
next (1804. 
Thefleest revolution, 1681 days 4 +053 
tropical revolution 1680-97, Or 4 yeais 7 
months rr ig 
- :mi-2x = - 2°767123 
phelic - 4? a” 6" 26" 
Nae = eb eases 
Inclination - © 34 38 50 
Anomaiy, June 30 10 19 g Oo 
Wroaich-gives tor the mean longitude, the 
uit of january, 1804, 9° 29° 52/ 58''5 
-ecceniricity the fame as in the preceding 
element 8, 0° 24633 diurnal motion, 128 
50°983"'; annual motion, 78° 10 
I have had the fatisfa&tion to find that the 
fludy cr aitronomy is extending even in 
America. -Den Antonio de Roberdo has 
fent me from the Havannah, minute caleu- 
lations of the eclipfe of the fan, on the roth 
of February, 1804, made by the analytical 
methods of M. Dafejour, for every coun- 
try of the earth, with all the dimenfions of 
the curves of illumination. Thefe calcu- 
lations, more extenfive and mere exact 
than tho!e in the Conustffance des Temps, 
for the year 12, arrived too late to be in- 
ferted in that work ; which I much re- 
gretted. 
The French i Megs has refolved to 
-eftablith ase miffion to China, which i ig 
apsally ufeful to the {ciences and to 
tical relations ; and one of our able al- 
troaomers has formed the-project of going 
thither. ei ¢ 
My Bibiiographie Aftronomique a ppetiad 
on the sth of June, in a quarto volume of 
goo pages. It contains as large a cata- 
logue as I was able to make, inthe courfe 
of thirty years,.of all the aftronomers, 
and all the works:on aitronomy, which 
have appeared for two thoufand years. 
Bailly’s jJarge Hifory of Aftronomy, 
terminated at 3782: : I have continued it 
to the ead of 1802. 3 
vk ; M. Goudin 
