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True Apparent Places of Thirty-seven of the Principal Fixed Stars, for every

tenth day of the year.

[blocks in formation]

o Dec. North.

Right Asc.

: 00 Dec. South.

& Right Asc.

: . Dec. North.

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Dec. North.

Right Asc.

5. Dec. South.

h. m.

h. m.

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1

.

1845. Jan. 1

11 21

31 Feb.10

20 Mar. 2

12

22 Apr. 1

11

21 May 1

11 21

31 Jun. 10

20

30 July 10

20

30 Aug. 9

19

29 Sept. 8

18

28 Oct. 8

18

28 Nov. 7

17

27 Dec. 7

17 27 37

15 3

8 sec. 40.63 48 25.0 40.94 26.6 41.25 28.2 41.57

15 28 27

sec. 7.27114 14.6 7.56 12.1 7.97 9.9 8.20 8.2 8.52

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h. m.

h. m.

o

il

h. m. 15 56

24.5

>

14 51 sec.

9.8146 61.7 10.58 59.5 11.42 57.9 12.30 56.9 13.18 56.6 14.04 57.0 14.85 58.0 15.57 59.7 16.19 61.8 16.69 64.4 17.05 67.4 17.27 70.5 17.35 73.7 17.28 76.9 17.07 80.0 16.74 82.9 16.30

85.4 15.75 87.6 15.11 89.4 14.41 90.6 13.65 91.4 12.96 91.6 12.04

91.3 11.24 90.5 10.45 89.2 9.70 87.4 9.00 3.39 82.4 7.83 79.4 7.47

76.1 7.20 72.5 o

7.07 68.4 7.10

64.6 7.29 60.9 7.63 57.3 8.11

54.0 8.73 51.1 9.45 48.6

29.7 41.88 31.1 42.18 32.4 42.46 33.4 42.72

34.2 42.96 34.8 43.17 35.2 43.35 35.4 43.51 35.4 43.63 35.2 43.73 34.9 43.80 34.5 43.84 31.0 43.86

33.5 43.84 32.9 43.79 32.3 43.72

31.8 43.62 31.2 43.51 30.6 43.37 30.1 43.22 29.6 13.07 29.2 42.93 28.8 42.79 28.5 42.67 28.3 42.59 28.3 42.54 28.4 42.53

23.7 42.57

29.2 42.67

30.0 42.81 31.0 43.00

32.2 43.23

33.6 43.50 35.1 43.79 36.6

6.8 8.84 6.0 9.14 5.8 9.42 6.0 9.69 6.7 9.91 7.9 10.10 9.4 10.26

11.3
10.39 13.4
10.49 15.6
10.55 17.9
10.58 20.2
10.57

22.4
10.53
10.45

26.3
10.35

27.9 10.22

29.3 10.07 30.3 9.90 30.9 9.71

31.2 9.52 31.2 9.33 30.8 9.14 30.0 8.95

28.9 8.85 27.4 3.75 25.5 8.69 23.4 8.65 20.9 8.73 19.0 8.83 15.2 8.98 12.3 9.18 9.4 9.42 6.5 9.70 3.9|

15 36 6

eec.
38.12 54 59.2
38.41 56.2
38.71

54.3
39.01 52.7
39.31

51.3 39.61

50.2 39.90 49.5 40.17 49.2 40.42 49.2 40.64 49.5 40.84 50.2 41.01 51.1 41.15 52.2 41.26 53.5 41.35 54.9 41.40 56.3 41-43 57.7 41.42 59.0 41.38

60.3 41.32

61.4 41.23 62.4 41.11 63.2 40.97 63.9 40.92

64.4 40.66 64.6 40-50 64.7 40.34 64.5 40.20 64.1 40-09 63.5 40.01 62.6 39.96 61.5

39.97 60.1
6

40-03 53.3
40-13 56.5
40.28 54.5
40.48

52.5
40.72 50.4
40.93 49.3

19 sec.

/ 26.03 22 30.3 26.32 31.2 26.64 32.3 26.96 33.3 27.28 34.4 27.60 35.5 27.92 36.4 23.22

37.3 28.49 38.1 28.75 38.7 23.99 39.2 29.20 39.5 29.38

39.9 29.53 39.9 29.65 40.0 29.75 40.1 29.81 40.0 29.83

40.0 29.82

39.8 29.78

39.7 29.70 29.59

39.2 29.46

38.9 29.31 38.5 29.14

38.1 28.97 28.81

37.2 28.66

36.7 28.53

36.3 28.44 28.39

35.6 28.39

28.43 o

28.55 35.6 28.70 36.0 28.91 36.5 29.15 37.3 29.43 33.2

39.5

37.7

85.1

35.9

35.4 35.4

True Apparent Places of Thirty-seven of the Principal Fixed Stars, for every

tenth day of the year.

[blocks in formation]

Right Asc.

Dec. South.

Right Asc.

. Dec, North.

o Dec. North.

Right Asc.

19. Dec. North.

Right Asc.

Dec. North.

h. m.

h. m.

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34.7

59.9

16 19 26 1845.

sec. Jan. 1 54.82 4 50.9

11 55.11 51.4 21 55.43 52.0 31 55.76

52.7 Feb.10 56.10 53.5 20

56.44 54.3 Mar. 2 56.77 55.1 12 57.09

55.9 22 57.39

56.7 Apr. 1 57.67

57.4 11 57.93 59.0

21 58.17 59.5 May 1 58.39

59.0 11 58.58 59.5 21 59.73 31 58.86

60.3 Jun. 10 58.94

60.6 20 58.98 60.9 30 59.00

61.1 July 10

58.97 61.2 20 53.91 61.3

30 59.81 61.3 Aug. 9

58.67 61.3

58.52 61.1 29 59.34 60.8 Sept. 8

58.16 60.4 18 57.98 59.9

28 57.91 59.3 Oct. 8 57.66 58.7

18 57.54 59.1

28 57.47 57.5 Nov. 7 57.44 56.9 17 57.47

56.4 27

56.2 Dec. 7 57.70

56.0 57.89

17 27 12

sec.
44.02 40 40.5
44.21

38.4
44.44

36.4 44.69 34.6 44.96 33.1 45.24 31.9 45.53 31.1 45.82

30.7 46.11

30.7 46.39

31.2
46.65 32.0
46.90

33.2
47.13
47.34 36.4
47.53

38.2
47.69

40.2 47.80 42.2 47.98 44.2 47.93 46.2 47.94

43.0 47.91

49.6 47.84 51.0 47.74 52.2 47.60 53.2 47.44 53.9 47.26 54.4 47.08

54.6 46.89 54.5 46.71

54.1 46.55 53.4 46.41 52.4 46.31 51.2 46.26

49.7 46.25 47.9

46.23 46.0 o

19

O 57.56

Right Asc.

h, m.

h. m.

h. m.

19 43

sec.

1

.

56.1 27 59.13

56.3 37 59.401 56.7

46.38 43.7
46.51 41.5
46.68 39.4

18 31 38 19 17 2
sec.

sec.

1 11
40.33 38 36.1 40.50 43 42.1

o
40.45 33.0 40.61 40.6
40.61 30.0 40.74 39.3
40.82 27.3 40.91 38.1
41.07

24.9 41.10 37.0
41.35 23.0 41.32 36.2
41.65 21.5 41.55 35.7
41.97 20.6 41.81 35.4
42.30 20.2

42.08

35.4 42.63 20.5

42.36 35.3 42.96 21.4

42.65 36.5 43.28 22.8 42.93 37.5 43.59 24.6 43,22 38.7 43.87 26.9 43,50 40.2 44.12 29.6 43.76 41.8 44.34 32.5

44.00

43.6 44.51 35.5 44.22 45.4 44.64 38.6 44.41

47.2 44.72 41.7 44.57 48.9 44.76 44.7 44.68 50.6 44.74 47.6 44.75 52.1 44.67 50.3 44.78 53.5 44.56 52.6 44.77 54.7 44.40 54.7 44.71 55.7 44.21 56.3 44.62 56.5 43.98 57.6 44.49 57.2 43.73

58.4 44.34 57.6 43.47 58.3

44.17 57.9 43.22 58.7

43.99 57.8 42.97 59,2 43.81 57.6 42.73

43.65 57.3 42.52 55.7 43.51 56.7 42.35 53.8 43.39 55.9 42.23 51.5 43.30 55.0 42.16

48.9 43.25 53.9 42.14 46.1 43.25 52.7

42.17 43.1 43.28 51.4 o

42.27 39.6 43,351 50.1

12.83 27 51.8

12.89 50.3 o

13.00 43.5 13.14 47.1 13.31 45.8 13.51

44.7 13.73

43.9 13.97 43.5 14.23 43.4 14.50 43.6 14.79 44.3 15.08 45.3 15.37 46.6 15.66 49.2 15.93

50.0 16.19 51.9 16.43 54.0 16.64 56.1 16.81

59.2 16.91 60.2 17.04 62.1 17.09

63.8 17.09 17.05 66.8 16.97 67.9 16.86 69.8 16.72 69.5 16.56 69.9 16.39 70.0 16.21 16.04 69.6 15.89 69.0 15.75 69.2 15.64 15.57 66.0 15.54 64.6 15.55 63.1 15.59 61.5

65.4

69.9

57.2

67.2

17

True Apparent Places of Thirty-seven of the Principal Fixed Stars, for every

tenth day of the year.

[blocks in formation]

: Dec. North.

Right Asc.

Dec. North.

Right Asc.

Dec. South.

Right Asc.

Dec. South.

Right Asc.

Dec. North.

h. m.

h. m.

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2.80

4.12

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1845. Jan. 1

11 21

31 Feb.10

20 Mar. 2

12

22 Apr. 1

11

21 May 11

11 21

31 Jun. 10

20

301 July 10

20

30 Aug. 9

19

29 Sept. 8

18

28 Oct. 8

18

28 Nov. 7

17

27 Dec. 7

h. m. 20 36 44

sec. 8.14 43 58.2 8.09 55.5 9.09 52.6 8.15

22 49

sec. .
4.36 26 34.3

33.9 4.19

33.2 4.14 32.2

31.0 4.14 29 5

4.19 o

27.9 4.29

25.9 4.42

23.9 4.59 21.7 4.79

19.5 5.03 17.2 5.30 15.0 5.60

12.9 5.92

10.7 6.26 8.7 6.60

7.0 6.95

5.5 7.28 4.3 7.59 7.87 2.8 8.12 2.6

2.8 8.48

3.2

22 57 14 sec.

11 3.02 22 31.2 2.93 30.1 2.95 28.3

27.6 2.77

26.3 2.77 25.1 2.81

24.1 2.99 23.2 3.00 22.6 3.14)

3.4

8.32

17

27 37

h. m.

49.3 8.26 46.5 8.42 43.8 8.62

41.5 8.87 39.6 9.16 38.2 9.43 37.4 9.82 37.1 10.13 37.4 10.55 38.3 10.92 39.7 11.28 41.6 11.62 44.0 11.93 46.7 12.21 49.7 12.45 53.0 12.63 56.3 12.76 59.7 12.84 63.0 12.86 66.2 12.82 69.2 12.73 72.0 12.59 74.6 12.40 76.7 12.18 78.5 11.94 79.8 11.68 80.7 11.41 81.1 11.15 81.0 10.90 80.4 10.67 79.3 10.47 77.7 10,31 75.7 10.19 73.3 10.12 70.7

21 14 61
sec.

11
51.16 55 67.8
50.96 65.1
50.84 62.1

50.78 59.0 ó

50.82 55.4 50.94 52.3 51.14 49.4 51.41 46.9 51.75 44.7 52.16 43.1 52.61 42.1 53.10

41.6 53.62 41.8 54.14 42.6 54-66 44.0 55.16 45.9 55.62

48.3 56.03 51.1 56.39 54.2 56.68 57.6 56.89 61.1 57.03 64.8 57.09 63.4 57.06 72.0 56.96 75.4 56.79 78.6 56.55

81.5 56.25 84.1 55.90 86.3 55.52 88.0 55.12 89.2 54.70 89.8 54.29 89.9 53.87 89.4 53.49 88.4 53.15 86.8 52.85 84.7 52.62 82.2

h. m.
21 57

Бес
49.33 3 69.0
49.29 68.7
49.27 69.5
49.28 70.1

49.31 70.6
o

49.39 71.1
49.49

71.2
49.63
49.79 70.8
49.98 70.2
50.21 69.4
50.46 68.2
50.73 66.9
51.02

65.3
51.32 63.5
51.63 61.6
51.93

59.7 52.22 57.8 52.50 55.9 52.75 54.0 52.96 52.4 53.13 50.8 53.27

49.5
53.36 48.4
53.41 47.5
53.41

46.8
53.38
53.31 46.1
53.21 46.0
53.09 46.1
52.96 46.4
52.82 46.8
52.68 47.3
52,55 47.9
52.43 48.6
52.32 49.4
52.24 50.2
52.181 51.0

4.0
8.65 5.0
8.66

6.2 8.63

7.5 8.56

9.0 8.45

10.4 8.32

11.7

13.0 8.01 14.0

14.9 7.69 15.5 7.54 15.8 7.41

15.8 15.6

22.3 3.32 22.4 3.54 22.9 3.79 23.7 4.07 24.8 4.37 26.2 4.68

27.9 4.99

29.9 5.30 32-0 5.60 34.2 5.88 36.5 6.14 38-8 6.36 41.0 6.55

43:1 6.69

45-1 6.79 46.9 6.85 48-6 6.87 50-0 6.86

51.1 6.81

52.0 6.73

52.7 6.63 53.1 6.52 53.2 6.39 53.1 6.26 52-8 6.13 52.2 6.00 51.4 5.89

50.5 5.78

8.59

46.3

9.17

7.85

7.30

49.3

1

Dr. Young's Refractions, the Barometer being at 30 inches, and the inter

nal Thermometer at 50, or the external at 47, degrees; with the corrections for + one inch in the barometer, and for - one degree in the ther. mometer of Fahrenheit. From page 19 of Vol. 1st of Pearson's Practical Astronomy.

App. Alt. Refr. B. 30

+1B

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Diff. for
-1° Fa.

App. Alt.

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Refr. B. 30

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0.0 33.51 74 8,1 3. 014.35 30 2,3 8. 06.35 13,3 ,45||14. 03.49,9 7,70 1,469
532.53 71 7,6
5 14.19 29 2,2
10 6.25 13,1 ,53

10 3.47,1 7,61 ,464 10 31.58 69 7,3 10 14. 429 2,2 20 6.21 12,3,82

203.44,4 7,52,453 15 31. 5 67 7,0 15 13.50 28 2,1 30 6.14 12,6 ,80

30 3.41,8 7,43,453 2030.13 65 6,7 20 13.35 29 2,1 40,6. 7 12,3,79 40 3.39,2 7,34,443 25 29.24 63 6,4 25 13.21 27 2,0 50 6.0 12,1 ,77

50 3.36,7 7,26 ,444 30 28.37 61 6,1 30 13. 727 2,0 9. 05.51 11,9 ,76 15. 03.34,37,18 1,439 3527.51 59 5,9 35 12.53 26 2,0 105.47 11,7 ,74

30 3.27,3 6,95 ,424 4027. 658 5,6 40 12.41 26 1,9 205.41 11,5 ,73 | 16.03.20,6 6,73,411 45 26.24 56 5,4 45 12.28 25 1,9 30 5.36 11,3,72

30 3.14,4 6,51 ,399 50 25.43 55 531

50 12.1625 1,9 40 5.30 11,1 ,71 17. 03. 8,5 6,31,386 55 25. 3 53 4,9 55 12. 3 25 1,8 50 5.25 11,0,70 30 3. 2,9 6,12 ,374 1. 0 24.25 52 | 4,7 4.0 11.52 24,1 1,70 10. 05.20 10,8 ,69|18. 0 2.57,65,94 |,362 5 23.48 50 4,6 10 11.30 23,4 1,64 105.15 10,6 267 19

2.47,7 5,61 ,340 10 23.13 49 4,5 2011.10 22,7 1,58 20 5.10 10,4 ,65 20

2.38,7 5,31,322 15 22.40 48 4,4 30 10.50 22,0 1,53 305. 5 10,2 ,64 21 2.30,5 5,04 ,305 2022. 8 46 4,2 40 10.32 21,3 1,48 40 5.0 10,1 ,63 22 2.23,2 4,79 ,290 2521.37 45 4,0 50 10.15 20,7 1,43

50 4.56 9,9 ,62 23 2.16,5 4,57 ,276 30 21. 7| 44 3,9 5. 09.58 20,1 1,33 11. 04.51

2.10,1 4,35,264 35 20.3343 3,8 10 9.42 19,6 1,34

10 4.47
9,6 ,59 25

2. 4,2 4,16 1,252 40 20.10 42 3,6 20 9.2719,1 1,30

204.43
9,5 ,58 26

1.58,8 3,97 ,241 45 19.43 40 3,5 30 9.11 18,6 1,26 30 4.39 9,4 ,57 27 1.53,8 3,81 |,230 50 19.17 39 3,4 40 8.58 18,1 1,22

40 4.35

9,2 ,56 28 1.49,1 3,65 ,219 55 18.52 39 3,3

50 8.45 17,6 1,19 50 4.31 9,1 ,55 29 1.44,7 3,50 ,209 2. 018.29 38 3,2 16.0 8.32 17,2 1,15 12. 04.28,1 9,00 ,556 30 1.40,5 3,36 ,201 5 18. 5 37 3,1 10 8.20 16,9 1,11

10 4.24,4 8,86 ,548 31 1.36,6 3,23 ,193 1017.43 36 3,0 20 8. 916,4 1,09 204.20,8 8,74,541 32 1.33,0 3,11 1,186 15 17.21 36 2,9 30 7.59 16,0 1,06 304.17,3 3,63,533 33 1.29,5 2,99 ,179 2017. 0 35 2,8 40 7.47|15,7 1,03

40 4.13,9 8,51,524 34 1.26,1 2,89 1,173 25 16.40 34 2,8 50 7.37 15,3 1,00

50 4.10,7 8,11,517 35 1.23,0 2,78 ,167 30 16.21 33 2,7 7.0 7.27|15,0,98 13. 04. 7,5 8,30 ,509 36 1.20,0 2,68 ,161 3516. 2 33 2,7 10 7.17 14,6,95 104. 4,4 8,20 ,50337 1.17,1 2,53 ,155 40 15.43 32 2,6 20 7. 8 14,3 ,93 20 4. 1,43,10,496 39 1.14,4 2,49 ,149 4515.25 32 2,5 30 6.59 14,1 ,91 303.58,4 3,00 ,490 39 1.11,3 2,40 ,144 50 15. 8 31 2,4 40 6.51 13,8,89

40 3.55,57,39,482 40 1. 9,32,32 ,139 55 14.51 30 2,3 50 6.43 13,5 1,87

50 3.52,67,79,476 41 1. 6,92,24 1,134

9,8,60 24

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42 1. 4,6 2,16,130 55 40,8 1,36,082 67 24,7 ,83,050 79 11,2,38,023 43 1. 2,4 2,09,125 | 56 39,3|1,31,079 68 23,5 ,79 ,047|| 80 10,2 ,34 ,021 44 1. 0,32,02 ,120 57 37,8 1,26,076 69 22,4 275,045 81 9,2 ,31,013 45 58,1 1,95,116 58 36,4 1,22,073 70 21,2 271,043 92 8,2 ,27 2016 46 56,1 1,98 ,112 59 35,0 1,17,070 71 | 19,9,67,040 83 7,1 ,24,014 47 54,21,81 ,103 60 33,6 1.12 ,067 72 18,3,63,038 84 6,1 ,20,012 49 52,3 1,75 ,104 61 32,3 1,08,065 73 17,7,59,036 | 85 5,1 ,17,010

50,51,69,101 | 62 31,0 1,04 ,062 74 16,6,56,033 86 4,1 ,14,008 50 48,8 1,63,097|| 63 29,7 ,99 ,060 75 15,5 ,52,031|| 87 3,1 ,10 ,006 51 47,1 1,58 ,094 | 64 | 28,4 ,95,057|| 76 14,4,48,029 88 2,0,07,004 52 45,4 1,52,090 65 27,2 ,91,055 77 | 13,4 ,45 ,027|| 89 1,0,03,002 53 43,8 1,47,088 66 25,9 ,87,052 78 12,3,41,025 90 0,0,00,000 54 42,21,41,085|| 67 | 24,71,831,050 | 79 | 11,2 1,38 1,023

49

The correction for an increase of altitude of one inch in the barometer, or for a depression of one degree in the thermometer, is to be added to the tabular refraction; but when the barometer is lower than 30 inches, or the thermometer higher than 47 degrees, the correction becomes subtractive.

When great accuracy is required, 0,003 inch should be deducted from the observed height of the barometer, for each degree that the thermometer near it is above 50 degrees, and the same quantity added for an equal depression.

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Logarithm for converting Sidereal into Mean Solar Time + 9.9988126

Mean Solar into Sidereal Time + 0.0011874 A second of time, at the Equator, contains 1521 feet.

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