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Suite de la Table pour réduire les parties de l'Équateur

[blocks in formation]

On réduira les minutes en regardant les nombres de la Table comme des minutes et des secondes.

On réduira les secondes en prenant les nombres de la Table pour des secondes et des tierces; mais on convertira les tierces en fraction de seconde, en mettant 1 dixième pour 6"; 2 dixièmes pour 12", et ainsi de suite.

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NOMS

ct

GRANDEURS

des Étoiles.

ASCENSION DROITE MOYENNE, DÉCLINAISON MOYENNE,

1er Janvier 1830.

VARIATION

VARIATION

1er Janvier 1830.

VARIATIONS

H. M. S. annuelle. D. M. S. annuelle. D. M. S. annuelles.

S.

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30 Lion...

.3 9.58. 2,9

3,28 149.30.44

51,7 26.48.14.B

7.55.33.A+ 15,3

49,2 17.35,18.B

32 RÉGULUS.

3,21 149.49.37

[blocks in formation]

34 μ gr. Ourse.. 48 B gr. Ourse., 50 a gr. Ourse.. 68 Lion.. 70 6 Lion... 94 LION.. 58 VIERGE... 64 gr. Ourse., 1 Corbeau.. a 2 CROIX.... Croix..... 9 Corbeau 2971 Vierge. B Croix...... gr. Ourse. 43 Vierge. 47 Vierge.. 27 Cont. Hydre. Centaure....... 793 gr. Ourse. 67 & VIERGE.. ? Vierge. gr. Ourse. Bouvier...

[blocks in formation]

9.59.18,5 10. 6.48,6 10. 7.13,0 310.10.35,0 .3 10.12.10,2 .2 10.51.31,8 .2 10.53. 9,8 .2.3 11. 5. 3,1 .3 11. 5.18,3 211.40.22,8 .3 11.41.50,3 .2 11.44.50,9 4 11.59.39,5 .112.17.11, I .2.3 12.21.48,0 .3 12.25.27,8 12.33. 2,8 212.37.52,0 12.46.31,0

.3 12.47. 2,4 .3 12.53.42,8 .3 13. 9.41,7 .3 13.11. 4,9 13.17. 2,5 13.16.14,8 13.26. 2,3 13.40.49,9 .3 13.46.35.2 113.51.55,4 .3 13.56.43,1 114. 7.54,5 .114.28.12,8

3 14.41.17,8

3,67 151.42.9 3,35 151.48.15 3,30 152.38.45 3,62 153. 2.33 3,68 162.52.57 3,80 163.17.27 3,19 166.15. 46 3,16 166.19.35

48,1 55,0 43.45.34.B 52,2 24.15.45.B

12.47.42.B

5

16,6

17,3

17,3 17,6

17,2

49.

20.41.55.B

[blocks in formation]

54,3 42.21. 7.B

17,9

[blocks in formation]

19,2

57,0

62.40. 1.B

19,2

[blocks in formation]

3,06 175. 5.43

46,0 15.31.21.B

3,12 175.27.35 3,20 176.12.43 3,07 179.54.52 3,26 184.17.47 3,26 185.27. 0 3,13 186.21.57 3,02 188.15.42

20,0

46,8

2.43.22.B 20,0

48,0 54.38.23.B

- 20,0

[blocks in formation]

3,43 189.28. o

51,5

2,66 191.37 45

39,9

3,00 191.45.40 3,00 193.25.42 3,23

58.45.22. A+ 19,8 56.52.59.B

45,0

4.19.25.B

19,6 19,6

19,5

197.25.28

3,36 197.46.13 2,42 199.15.37

45,0 11.52.33.B

48,4 22.16.14.A + 19,1 50,4 35.48.41.A+ 19,1 36,3 55.48.57.B 18,

3,15 199. 3.42

47,1

3,07 201.30.34 2,36 205.12.28

2,86 206.38.48 4,14 207.58.52 3,49 209.10.47 2,73 211.58.37

8,9

10. 16. 14.A + 18,0 46,0 0.16.39.B 18,6 35,4 50. 9.52.B

18,

[blocks in formation]

42,9 19.15.14.B 62,1 59.32.46.A.+ 17,7 52,3 35.31.47. A + 17,0 40,9 20. 4.17.B 19,0 67,1 60. 7.31.A+ 16,0

2.3 14.41.29,3 +3,30 220.22.19 +49,3
.3 14.51.17,4-0,30 222.49.21
.2.3 15. 7.52,0 +3,22225.58. o +48,3
.3 15.23.50,8 3,96 230.57.42

-

4,47 217. 3.11

[blocks in formation]

42,7

3,30 220.19.27 49,

4,5

14.27.49.B 15,7 15.17.4.A 15,3 15.19.45. A + 15,3 74.51. o.B 14,7 8.44.56.A+13,7 59,4 40.35.10.A+12,6 42,9 11. 6.51.B 27.17.31.B 6.58. 1.B 15.57.42.B

12,4

12,4

11,8

11,6

Loup. 13 Serpent.. ...3 15.26.40,9 2,86 231.40.13 5 & COURONNE B..2.3 15.27.29,4 2,53 231.52.21 37.9 24 a SERPENT... 2.3 15.35.53,9 2,94 (233.58.28 44.1 268 Serpent...... .3 15.38.20,4 +2,76 234.35. 6+41.4

[blocks in formation]
[blocks in formation]

ASCENSION DROITE MOYENNE. DÉCLINAISON MOYENNE, 1er Janvier 1830. 1er Janvier 1830.

.3 15.48.36,3 +2,74 237. 9.24 +41,1

[blocks in formation]
[blocks in formation]

3,47 238.53.30

52,

3,13 241.21.34

46,9

19.19.53.A+ 3.14.54.A+

3,66 244.44.57

54,9

26. 2.43.A +

2,58 245.43.34

38,7

21.51.58.B

8,2

13 Ophiuchus....2.3 16.27.48,3

3,29 246.57. 5

49,3

10.12.51. A

Triangle...

.2 16.30.46,5

6,24 217.41.37

93,6

68.41.57.A

26 Scorpion..

.3 16.39.10,1

3,87 249.47.

.31

58,0

33.58.32. A

.3 16.40.22,2

[blocks in formation]

Scorpion...

35 Ophiuchus. .2.3 17. 0.38, 1

[blocks in formation]

3,43 255. 9.31 2,73 256.43.29 2,46 257. 0.31 4,06 260.31. 9 261.45.39

2,77 4,14 262.41. o 4,18 263.55.26

61,036.58. 3.A 41,512.41.27.B 38.55.53.A

62,7 40. 2.59.A + 45,0 2.46.46.B 15,356.54. 5.B 20,8 51.30.43.B

.3 18.12 53,3 +3,98 273.13.20 +59,7 | 34.27. 7.A

.3 18.27. 7,0-19,16 276.46.45-287,4 18.31.10,92,02 277.47.43 +30,3

.2.3 18.44.43,3 3,72 281.10.50 55,8

[blocks in formation]

4,04 1250. 5.33

60,6

37.44.42.A

51,5 15.30. 16. A

5,1

36,9

40,9 14.35.27.B 25. 2.49.B

4,6

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62, 1

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[blocks in formation]

.3 19.23.51,6

0,02 288. 3,01 289.13.52 2,42 290.57.54

7.17

0,3

67.21.45.B | +

45,

2.46.58.B

6,6

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36,3

27.36.32. B

.3 19.38.10,6

2,85 294.32.39

42,7

10.12.18. B

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TABLE

DES POSITIONS GÉOGRAPHIQUES.

On se proposait de modifier cette Table dans quelques parties, d'après les
déterminations les plus récentes; mais il a été facile de reconnaître qu'on s'expo-
serait ainsi, en ne faisant que des changemens partiels, à de graves erreurs. Il est,
en effet, impossible de distinguer maintenant dans cette Table, à la rédaction de la-
quelle plusieurs personnes ont concouru, les lieux dont les positions ont été obtenues
d'une manière absolue, de ceux qu'on n'a déterminés qu'en les liant aux premières par le
transport du tems ou à l'aide d'opérations géodésiques. Si l'on changeait les coordonnées
des uns sans toucher à celles des autres, on altérerait peut-être, sur plusieurs points, la
configuration des côtes, de manière à compromettre la sûreté des navires qui prendraient
la Table pour guide. En attendaut un examen général de toutes ces positions géogra-
phiques, le Bureau des Longitudes continuera à insérer dans les Additions de la
Connaissance des Tems, les déterminations qui inspirent le plus de confiance.

Pour la commodité du plus grand nombre de personnes qui font usage de cette Table,
on y indique d'abord les latitudes, puis les longitudes en degrés et ensuite en tems. On
désigne la latitude septentrionale par la lettre N, et la latitude méridionale par la
lettre S; la longitude orientale par la lettre E, et la longitude occidentale par la lettre O.

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