Page:A Voyage to Terra Australis Volume 1.djvu/489

From Wikisource
Jump to navigation Jump to search
This page has been proofread, but needs to be validated.
Lunar observations.]
268
APPENDIX.
 

TABLE II. (Reference from p. 84.)

Longitude of the south point of Lucky Bay, Archipelago of the Recherche.

Appt. Greenwich time of the observations.   Place. Longit. E. from Naut. Alm. Reduction by two time keepers. E. Longitude of Lucky Bay. Correction Correct Longit. of Lucky Bay. Whence deduced. Observer.
for errors in tables Interv. of ☾'s error.
1802 Jan. º ' " º ' " ' " º ' "
º    '
9 at 17 56
 
 
 
 
On the
South Pt.



122
122
122
122
122
122
30
29
33
34
38
41
45
30
15
45
45
15
122
122
122
122
122
122
30
29
33
34
38
41
45
30
15
45
45
15
−6




15
 
 
 
 
 
One day




122
122
122
122
122
122
24
28
27
28
32
35
30
15
0
30
30
0
ʘ W. ☾




C




27 at 13 28
At sea.





132
131
131
131
131
131

0
51
51
47
50
52

45
15
0
0
15
45
º
+9
 
 
 
 
 
'
30




"
55
 
 
 
 
 

122
122
122
122
122
122

29
20
20
16
19
21

50
20
5
5
20
50

−8





45
 
 
 
 
 
As on 27th
there
being no
other obs.
until
Feb 5.

122
122
122
122
122
122

21
11
11
7
10
13

5
35
20
20
35
5

ʘ E. ☾





C




28 at 14 42 On shore
at Fowler's
Bay.

132
132
132
132
30
24
19
45
30
30
15
+10
 
 
 
13


38
 
 
 

122
122
122
122
17
10
5
5
7
52
52
37
−8


30
 
 
 
Ditto.


122
122
121
121
8
2
57
57
37
22
22
7
Ditto.


F


Longitude from sixteen sets of lunar distances, Uncorrected 122 23 27,1 Corrected 122 15 42,1
 
Longitude of the south point from the two time keepers.
On Jan. 9 at 15º 51' of Greenwich time, and using the King-George's-Sound rates, the mean longitude was 122º 15' 48"
Correction for variation in the rates found at Pt Lincoln, −0 24,1
Correction for supplemental error during 9 days, −1 10,2
Corrected longitude, taken preferably to that above, 122 14 13,7 east