Regulus. 1812, June 12, 13, 15, 19, 20, 23,331 Mean of 10 23,331 22, 23, July 6, 7, 8 July 9, 14, 15, 18, 21, 23, 28, 23,205 Mean of 20 23,268 Oct. 1, 2, 3 Mar. 29, 31, Apr. 1, 2, 3, 4, 722,148 Mean of 50 22,692 8, 9, 11 Apr. 12, 13, 14, 20, 26, May 22,665 Mean of 60 22,688 24, 28, 31, June 2, 7 June 8, 11. July 6, 7, 9 22,576 Mean of 65 22,679 Not to be relied on with the same confidence as some others, as one of the above series differs a second from the mean; the result may be erroneous a quarter of a second, but, I think,, not inuch more. a Ophiuchi. 1812, June 28, 29, July 11, 1439,126 Mean of 10 39,126 21, 22, 26, 28, 30, Aug. 3 Aug. 19, 20, Sept. 15, 16, 19, 20, 21, Oct. 3, 8, 9 39,949 Mean of 20 39,537 Oct. 28, 31, Nov. 7, 15, 19, 21, 340,358 Mean of 30 39,811 22, 23, Dec. 6, 8 Dec. 29. 1813, Jan. 7, 9, 15,2 June 24, 25, 26, 27, July 5, 639,215 Mean of 40 39,662 July 9, 10, 11, 12, 13, 16, 17, 18, 19, 22 July 23, 24, 25, 26, 27, 28, 29, 38,849 Mean of 50 39,500 Aug. 7, 9, 10, 12, 13, 15, 17,38,115 Mean of 70 39,163 19, 20, 24 Some discordances in the above observations, which I cannot explain, render the result doubtful, and I reserve this star for future examination. 1812, July 26, 30, Aug. 1, 3, 6, 58,133 Mean of 10 58,133 9, 12, 14, 18, 19 Sept. 15, 16, 18, 19, 20, 21, 59,381 Mean of 20 58,757 Oct. 2, 3, 4, 7 Oct. 8, 10, 13, 15, 16, 19, 21, 58,963 Mean of 30 58,826 23, 24, 27 Oct. 28, 29, Nov. 2, 3, 6, 7,15,1 19, 21, 22 Nov. 23, 24, Dec. 8, 9, 10. 59,705 Mean of 40 59,045 1813, Jan. 21, Feb. 28, Mar. 59,626 Mean of 50 59,162 5, 6, 7 S Mar. 12, 20, 26, 27, Apr. 1, 358,014 Mean of 60 58,970 July 11, 12, 16, 17 July 19, 21, 22, 25, 26, 27, 28, 29, 30, Aug. 1 58,280 Mean of 70 58,872 Aug. 2, 3, 4, 7, 10, 11, 12, 13, 58,280 Mean of 80 58,799 15, 16 Procyon. 1812, June 12, 19, July 25, Sept. 15, 16, 17, 18, 19, 20. 1813,13,999 Mean of 10 13,999 Feb. 24 Mar. 3,6, 8, 17, 22, 29, Apr. 2, 4, 9, 10 Apr. 12, 14, 20, June 2, 7, 8, 7, 14,221 Mean of 20 14,110 14,795 Mean of 30 14,338 Aug. 17, 23, 24, Sept. 2, 6, 7} 14,426 Mean of 40 14,360 10, 12, 13, 14 Probably exact to a quarter of a second. a Orionis. 1812, July 17, 22, 25, Aug. 5, 13, 14, 16, 17, 19. 1813,16,044 Mean of 10 16,044 Jan. 2 Jan. 10, 11, 13, 16, 22, 25, 27, 28, Mar. 2, 11 15,486 Mean of 2015,765 Mar. 18, 22, Apr. 3, 4, 9, 10, 16,380 Mean of 30 15,970 11, 12, 13, 14 } 15,849 Mean of 40 15,940 14,856 Mean of 50 15,723. From the discordance of the last series, I consider this result as doubtful. a Serpentis. 1812, June 12, 13, 17, 19, 22, 88,187 Mean of 10 38,187 23, 28, 30, July 2, 4 July 6, 8, 9, 15, 18, 20, 21, 22, 26, 28 བ། ༑ Aug. 14, 15, 17, 18, 19, Sept. 15, 16, 18, 21, Oct. 3 39,508 Mean of 20 38,847 39,700 Mean of 30 39,132 Oct. 4, 13, 26, Dec. 6, 7, 12. 1813, Jan. 8, 9, 15, June 7 39,282 Mean of 40 39,169 39,244 Mean of 50 39,184 June 8, 10, 13, 16, 18, 21, 22, 24, 25, 27 July 5, 10, 11, 12, 16, 17, 18, 19,39,670 Mean of 60 39,265 20, 22 July 23, 26, 27, 28, 29, 30, 39,240 Mean of 70 39,260 Aug. 2, 7, 12, 15 MDCCCXIII. Result very exact. Rr The mean of more than 200 observations of this star is 1° 41′ 21′′,75. The above 167 were selected in preference; the result, however, is the same. Notwithstanding the great number of observations of this star, there are discordances which render the result doubtful to o",25. If the observations with four microscopes, previous to Oct. 1812, be rejected, the mean result with six microscopes will be 1° 41′ 21′′,6, which I prefer to the above. |