60 
MR. RUMKER’S OBSERVATIONS 
D. Comet in the Lion, July 1825. 
This Comet, which had been seen before in Europe, was discovered by me 
on the 9th of July at Stargard, where I made the following observations 
with a circular micrometer. 
1825. 
Mean Time at 
Stargard. 
Stars. 
Diffbrence of 
Right Ascen- 
sion in arcu. 
Diffbrence of 
Declination. 
Number 
of Obs. 
1825. 
Mean Time at 
Stargard. 
Stars. 
Difference of 
Right Ascen- 
sion in arcu. 
Difference of 
Declination. 
Number 
of Obs. 
h m s 
/ // 
/ // 
h m s 
o / // 
r 
CL 
+ 1(3 0 
39 56.2 S. 
9 
July 12 
7 8 14 
1 
+ 0 3 7.5 
0 11.9 N. 
8 
July 9 
7 36 0 i 
(3 
— 1 51 
1 ^ 47 
31 57.0 N. 
l o *\o Q 1M 
2 
5 
6 53 1 
9 
-0 20 48 
21 37 S. 
2 
1 
V 
lo 
L 
Ano. 
-37 9 
3 8 N. 
i 
13 
7 3 6 
7C 
+ 1 11 37 
25 4 N. 
1 
7 10 18 
K 
+ 0 12 35 
19 49.4 N. 
7 
10 
7 6 20 
0 
+ 18 47 
7 
7 42 4 
A 
-0 7 49 
43 38 N. 
1 
7 2 47 
3 
7 4 N. 
5 
7 11 44 
P 
—0 8 25 
28 33 N. 
G 
7 6 20 
c 
— 12 38 
7 
7 29 39 
V 
—0 10 5 
40 58.5 N. 
3 
7 2 47 
£ 
0 12 N. 
5 
7 3 G 
0 
-0 21 18 
27 38 N. 
1 
(> 5 ( ) 13 
OQ d*\ ^ 
4 
6 43 17 
n 
17 19 N. 
2 
1 4 
7 99 ) 
A 
+ 0 1 51 
7 5 S. 
1 
6 43 17 
z 
—41 27 
6 2 N. 
2 
+ 
-0 0 18 
9 57 S. 
1 
11 
6 21 33.5 
r\ 
— 19 10.5 
38 58 S. 
i 
r 
e 
+ 0 13 52 
28 23 N. 
1 
7 4 8 
9 
—31 18 
35 28 N. 
5 
15 
7 7 42 < 
(7 
+ 0 8 49.5 
10 39 N. 
1 
6 57 2 
81 SI 
—48 54 
0 39 N. 
6 
L 
T 
+ 0 1 7-5 
3 27 S. 
1 
Mean Places of the Stars for the Time of Comparison. 
Stars. 
Mean Right 
Ascension. 
Annual 
Variation. 
Mean 
Declination. 
Annual 
Variation. 
Stars. 
Mean Right 
Ascension. 
Annual 
Variation. 
Mean 
Declination. 
Annual 
Variation. 
// 
0 / // 
// 
0 / // 
// 
0 / // 
// 
CL 
107 39 30 
47.51 
20 2 13 
19.51 
o? 
QO ^ 
169 7 34 
47.27 
17 24 56 
19.68 
P 
167 58 33 
47.37 
18 49 30 
19.54 
168 26 24 
47 .H 
16 29 34 
19.59 
y 
108 10 7 
47.38 
19 9 3 
19.55 
K 
168 26 40 
47.04 
15 16 51 
19.60 
0 
167 49 1 
47.49 
18 0 0 
19.59 
A 
168 47 35 
40.98 
14 51 47 
19.62 
£ 
108 19 55 
47.27 
18 23 42 
19.58 
168 47 54 
47.00 
15 7 36.7 
19.62 
Yi 
108 37 13 
47.24 
18 6 4 
19.59 
u 
168 49 27 
40.98 
14 54 37.5 
19.62 
z 
6 
108 48 59 
168 49 36 
47.22 
47.20 
18 17 59 
16 50 32 
19.01 
19.01 
T 
168 59 10 
46.89 
13 58 10 
19.65 
r is the last star, page 148 of the Histoire Cdleste, where the last wire should 
have been 58".5 in lieu of 38".5. 
Parabolical Elements of the same. 
PassageoverPerihel. . .1825,May30 d .772G5 
Mean Time Stargard. 
Longitude of Perihelion 273° 4' 37" from 
true Equinox, July 12. 
Long, of Ascend. Node 20° 17* 34” from 
true Equinox, July 12. 
Logarithm of Perihel. Distance 9.9.5.521 55. 
Inclination 58° 35' 58" 
Motion retrograde. 
Positions of the Comet 
1825. 
Mean Time 
at Stargard. 
Mean JR. 
Mean Declin. 
July 9 
h 
7 
m 
36 
s 
l87 
56 
// 
18 
O 
19 
/ 
21 
38 N. 
10 
6 
56 
52 
168 
7 
34.5 
18 
23 
24 
11 
6 
57 
1.5 
168 
18 
32 
17 
25 
47 
12 
7 
5 
11 
168 
29 
23 
16 
29 
35.5 
13 
7 
16 
6 
168 
39 
21 
15 
36 
14 
14 
7 
22 
168 
49 
17-5 
14 
44 
41.2 
15 
7 
7 
42 
169 
0 
23.5 
13 
54 
43 
E. Great Comet of 1825. 
Of this Comet I shall give only my observations during those times when 
its positions either became less favourable to European observers, or rendered 
it invisible to them. During the remainder of its appearance it was very 
generally observed, and with better instruments than I was provided with. 
