Researches in Stellar Photometry During the Years 1894 to 1906
Researches in Stellar Photometry During the Years 1894 to 1906
John Adelbert Parkhurst
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10 0. 05 0. 15 11. 13 "38 0. 08 40-INCH. ^ August 30. September 13. November 3 January 3. Mean. w Mag. J Mag. Mag. ^ Mag. Mag. J Mag. > Mag. JMag . Mag. H . Mag. P. A Mag. I . 10. 25 10. 48 "43 11. 99 0. 07 10. 39 0. 15 10. 66 -0. 07 11. 54 4-o. I6 11. 78 + 0. 07 + 0. 03 + 0. 04 -0. 05 10. 32 ^ 10. 63 3 i i . 50 ^ "-83 10. 57 10. 88 "75 12. 08 0. 07 0. 07 0. 04 0. 08 m 10. 70 o 11. 51 x "-77 Mean. + 0. 07 + O. OI 0. 06 10. 67 "53 11. 79 + O. O + 0. 0 o. O 11. 07 11. 32 0. 06 y 12. 40 a 14. 19 t... + 0. 09 + 0. 29 12. 60 13. 89 + 0. 29 11. 95 o. Oi 13. 54 .... 1 2 86 -0. 36 -0. 36 12. 28 13. 97 -0. 0 + 0. 0 3 12. 31 i 13-90 (12. 86 (14. 94 (14. 34 12. 56 H-I5 13 " 15-19 14-59 0. 19 0. 18 r Also 3, 1905 November 18, 15. 48 and 15. 73. CHAPTER IX. CYGNI. 125 TABLE 76. 7220 S CYGNI. VISUAL OBSERVATIONS OP THE VARIABLE. No. Date. h Aperture. Comparisons. Reduction, Steps. Means. Seeing. I. J Mag. Month and Day. Hour C. S. T. Julian Day G. M. T. Steps. Mag. i 2 3 4 5 6 7 8 9 IO 1 1 12 13 '4 15 16 18 '9 20 21 22 23 24 25 26 27 28 29 30 3' 32 33 34 35 36 37 38 39 40 4 42 43 1892 Dec.
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