. 
2 
. 
. 
ATs ee eee 
Mr, Bowditch on the Comet of 1811. $23 
Time of passing the perihelion 
September 11d. 23/,17' 11” mean time at Salem. 
12 04 0048 Greenwich. 
12 04 1009 Paris. 
Long. of the perihel. counted on the orbit of the comet 75°07’ 49” 
Longitude of the ascending node 140 25 46 
Inclination of the orbit to the ecliptic 73:05 11 
Motion retrograde 
With these elements I computed the geocentric longitudes and 
latitudes of the comet, at the time of each of the observations at Cam- 
bridge, Boston, Salem, and Nantucket, and have inserted them in the 
mh oe ee as 1 7 1 
following table, with the ding observed values. 
Siaso times of $61) -Obecrved Calculated — “Tol oe ge prc 
servation at Salem,|| longitudes. | longitudes. Differences, es Northilat. North. Differences. 
1807 d.k.’ ” ° ? He Ot. 2 WF oy ’ 
Sep. 67 56 52)\145 45 041145 45 22 —O 18/29 25 47 
8 7 54 2811146 55 301146 56 30 —1 00/31 03 14 
97 56 52/147 32 29]147 34 11 —1 42//31 50 GO 
10 7 38 47/|148 12 41/148 12 48 —0 0; 32 41 26 
127 56 52/149 33° 93624 = —3 12)|3- 
13 7 56 52)|150 18 19]i50 20 i ot 10 
147 56 521151 O7 57/151 06 431114 
15 7 56 52\|151 53 17|151 54 57 eens OF | 
16 7 31 42/152 41 15/152 44 31 ouing 1 
17 7 21 2ifl153 34 17|t53 36 54 «iu 38 45 03) 8424 
18 7 56 52 
23 7 56 52 
24 6 53 56 
26 7 56 52 
27717 54 
28 6 47 35 
29 7 02 15) 
30 7 56 52/| 
“) Oct. 1°7 01-36}. 
159 55 551159 57 12 
161 09 43/161 09 34 
163 58 17|163 57 5710 20 
i65 23 34/165 25 26 
167 95 54/166 58 46 
154 32 29/154 33 42] 
re 24 } os 30 oie 28 33/1 29 
49 13 
5281 
ik B40 21. week, 4s 
6 7 35 04 “0 59157 15 14157 15 1210 02 
8 7 56 52 Ade 4 5S. anll 49 
10 6 18 59/1195 53 O1/195 48 2214 40 ioe 5S 
11 9 03 411/199 37 53/199 35 O5'2 48 2 48 —0O 37 
13 6 25 40/|206 22 36/206 22 36 oO a “* 14. i 
17 6 25 40)\'221 42 162214402) —1 46//61 pre 
aoe . 97 53—27 33 Sums. 27 0u—2? 00 
Sums, 
