True Apparent Places of Thirty-seven of the Principal Fixed Stars, for every tenth day of the year. Epoch. -The Upper Culmination at Greenwich. Ursa Minoris. Libræ. Coronæ Bore- a Serpentis. pl Scorpionis. h. m. h. m. 74 15 8 8 15 28 sec. вес. " Jan. 1 9.81 46 61.7 40.63 48 25.0 7.27 14 14.6 38.12 54 58.2 26.03 22 30.3 True Apparent Places of Thirty-seven of the Principal Fixed Stars, for every tenth day of the year. Epoch.-The Upper Culmination at Greenwich. sec. " 44.02 40 40.5 h. m. 18 31 38 " " 40.33 38 36.1 h. m. 19 17 sec. 1 !! 40.50 48 42.1 .Dec. North. Right Asc. Dec. North. True Apparent Places of Thirty-seven of the Principal Fixed Stars, for every tenth day of the year. Epoch. The Upper Culmination at Greenwich. 1845. Dr. Young's Refractions, the Barometer being at 30 inches, and the internal Thermometer at 50, or the external at 47, degrees; with the corrections for - one degree in the ther one inch in the barometer, and for mometer of Fahrenheit. From page 19 of Vol. 1st of Pearson's Practical 4,0 50 10.15 20,7 1,43 3,9 11. 5. 0 9.58 20,1 1,33 10 9.42 19,6 1,34 20 9.2719,1 1,30 30 9.11 18,6 1,26| 40 8.58 18,1 1,22 50 8.45 17,6 1,19 25 21.37 45 30 21. 7 44 35 20.33 43 3,8 40 20.10 42 3,6 45 19.43 40 3,5 50 19.17 39 3,4 55 18.52 39 3,3 2. 018.29 38 3,2 518. 5 37 3,1 10 8.20 16,8 1,11 10 17.43 36 3,0 20 8. 916,4 1,09 15 17.21 36 2,9 30 7.58 16,0 1,06 2017. 0 35 2,8 40 7.47 15,7 1,03 25 16.40 34 2,8 50 7.37 15,3 1,00 30 16.21 33 2,77. 0 7.27 15,0,98 35 16. 2 33 2,7 10 7.17 14,6,95 40 15.43 32 2,6 20 7. 814,3,93 45 15.25 32 2,5 30 6.59 14,1,91 50 15. 8 31 2,4 40 6.51 13,9,89 55 14.51 30 2,3 50 6.43 13,5,87| 04.51 104.47 20 4.43 30 4.39 404.35 50 4.31 6.0 8.3217,2 1,15 12. 04.28,1 9,00,556 30 1.40,5 3,36,201 10 4.24,4 8,86,548 31 20 4.20,8 8,74,541 32 30 4.17,3 8,63,533 33 40 4.13,98,51,524 34 50 4.10,78,41,517 35 13. 04. 7,5 8,30,509 36 47,1 1,58,094 64 28,4,95,057 76 14,4,48,029 88 2,0,07,004 52 53 54 45,4 1,52,090 65 27,2,91,055 77 13,4,45,027 89 1,0,03,002 0,0,00,000 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. 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. 85 |