M. Ru raker on Recent Astronomical Observations. 
7-1 
Art. XIII. —Account of recent Astronomical Observations 
made on the Continent . By M. C. Rumker, Rector of the 
Nautical Academy, Hamburgh. In a Letter to Dr Brewster 
Dear Sir, London, 2(Hh April 182L 
I beg leave to transmit to you some recent astronomical obser- 
vations, which I trust you will find deserving of notice. 
The first series is a very extensive collection of observations 
of the occultations of the Pleiades by the moon on the 29th Au- 
gust 1 820, of which I have calculated the greater part. 
The second series are observations which I made at Ham- 
burgh, and to which corresponding ones may be obtained ; and 
the last is an interesting observation of an occultation of Jupi- 
ter, observed by Dr Olbers of Bremen, accompanied by a simi- 
lar one made long ago at Malta. Yours, & c. C. Rumker. 
Collection of Observations of the Occultations of' the Pleiades bp 
the Moon , August 29. 1820, 
No. 1. No. g. 
Observations made by Professor Bessel Observations made by Dr Olbers at 
at Konigsberg. Bremen. 
Sidereal Time. Mean Time. 
Immersion. 
Emersion. 
Immersion. 
Emersion. 
^ Merope, 
19 h 54' 7". 8 
20 h 41' 22 '.3 
V> 
- 
21 
3 48.8 
7b 
9 h 43' 58' 
*1 Alcyone, 
20 26 15.3 
21 
7 58.2 
v, l, Alcyone, 
9 48 28 
s, 
- 
21 
28 42.5 
s, 
10 13 16 
Piazzi, iii h 
161, 
21 
36 22.4 
/Atlas, 
20 54 52.5 
21 
48 21.6 
/, Atlas, 9 h 38' 4' 
10 29 18 
h Pleione, 
20 58 44.3 
21 
51 17.5 
A, Pleione, 9 42 23 
10 31 3. 
Piazzi, iii 164, 
22 
7 3.3 
10 42 36 
No. 3. 
No. 4. 
Observations made by Professor Harding 
at Gottingen. 
Sidereal Time. 
Observations made by Professor Gauss. 
K. G. Aul. Counc. Gottingen. 
Mean Time. 
Immersion. 
^ Merope, 
p, 
Emersion. 
19 h 58' 12". 2 
20 18 37.2 
20 21 54.2 
Immersion. 
/b 
Emersion. 
20 h 18' 36 '. 5 
») Alcyone, 
s, 
20 22 55.2 
20 46 29.2 
20 53 45.2 
20 55 59.2 
'A, Alcyone, 
20 22 58.1 
Atlas, 2Q h 1 2 ' 
1".2 
21 3 12.7 
Atlas, 
20 h 1 1 
57. 7 
Pleione, 20 16 
14.4 
21 5 11.2 
Pleione, 
20 16 
5.3 
