Date. 5. Moon Culminations observed at Cambridge. Lon. West of Greenwich, 4 h. 44 m. 32 s. Name of Object. 66 D's 2d Limb 10 06 24.67 "b1 Leonis e Leonis Feb. 25 f Libræ "D's 2d Limb 66 66 B2 B1 66 66 66 66 66 10 17 15 94 15.90 -0.04 10 24 50.01 49.92 15 25 53.28 53.16 -0.12 15 42 50.66 15 56 37.16 37.20 +0.04 16 06 23.19 23.66 +0.47 17 27 27.92 18 31 47.01 47.08+0 07 4 11 09.26 09.25 -0.01 4 27 12.69 12.67 5 09 47.69 -0.02 5 28 34.43 34.56 +0.13 * B1 is the initial of W. C. Bond; B2, that of G. P. Bond. "The above are corrected for known instrumental errors and for the rate of the chronometer. The Seconds of Tabular Right Ascension are taken from the Nautical Almanac." 6. Double Stars observed at Cambridge Observatory. -1848-49. 170 P. VII. a2 Geminorum 1848.27 32 + 536142 40 1848.30 724 +32 14 249 45 1.3 4 5.1 .26 .30 249 20 5.3 248 40 5.2 140 B The two components make a star of the 7th or 8th magnitude. 860 BA 1st, 2d, B: = 3d. 5 860 B1 860 B2 4 860 BA and B. 860 BA and C. 2.9 4 860 B2 860 B' Seen through dense clouds; the definition is good. 5 860 B2 860 B' The images of the stars are pretty well defined, though not good. 860 B2 A= 3d orange, B = 7th green. 860 B2 A= 3d golden, B = 7th blue or greenish. 4.3 5 860 B' 860 B Very unsteady images. 1560 B2 5 1240 B 4 1560 B2 5 1240 B1 Images unsteady. 5 1560 B2 1240 B2 Not a favorable evening for close objects, but the components are separated with 400 B1A= 1st, B = 10th. [certainty. 400 B2 .42 172 30 1848.56 16 23+2 18 9.50 1.4 2.2 10 140 B1 .41 212 30 118.1 5 140 B 140 B1 140 B2 140 B2 1560 B2 Very fine definition. 860 B Bad definition. 860 B1 860 B2 860 B When the micrometer-wires are set at 1", both wires are decidedly within the stars. 220 B1 A=6th, B=15th. A resembles Antares to the naked eye, but its red is deeper. is one of the most strikingly colored stars we remember to have seen. On the 29th of June this star was seen with thirty companions of from the 15th to the 20th magnitudes, within a radius of 6. With a power of 1500 there is no sign of a planetary disk under fine definition. 140 B2 A=7th, 8th, B= 14th. A appears to have decreased in brilliancy; its ruby-red color still remains. The star is at once recognized from its neighbours by its color alone. 140 B1 320 BA=7th, 8th, B= 15th. A is sensibly less than when first seen. 1848.55 17 05-26 22 215 30? 4.3 1848.55 17 07 +14 33 176 45 1848.52 17 57+2 32 118 07 .52 1848.47 18 39+39 30 21 04 5 22.9 6.9 117 45 6.8 3.1 5 66 .47 172 50 207.1 149 00 2.5 66 00 73.3 .41 60.4 1848.41 20 36+44 43 88 35 95.5 1848.25 19 24+27 39 55 55 33.5 1848.56 20 24+ 10 44 209 50 1849.45 12 03 0 37 179 49 .451 179 45 1849.52 16 19 -26 06 270 27 0.5 3.0 10 860 B The position-angle does not agree with its computed value. 860 B1 A= 3d, B=8th. Longer axis of the ring. 140 B Shorter axis. 140 B Seeing not good. Companion star 12th magnitude. 3.0 5 860 B2 3.4 10 860 B1 |