IOTA/IOTA-ES occultation update for (2474) Ruby / TYC 1261-01106-1 event on 2024 Oct 01, 18:03 UT Visible from Summary ------- On 2024 Oct 01 UT, the 21.1200031310696 km diameter asteroid (2474) Ruby will occult a 9.7 mag star in the constellation Taurus for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 7.50 mag to 17.24 mag (the magnitude of the asteroid) for at most 4.280 seconds. This update is based on, astrometry for the asteroid kindly provided by the IAU Minor Planet Center. This work has made use of data from the European Space Agency (ESA) mission Gaia (http://www.cosmos.esa.int/gaia), processed by the Gaia Data Processing and Analysis Consortium (DPAC, http://www.cosmos.esa.int/web/gaia/dpac/consortium). Funding for the DPAC has been provided by national institutions, in particular the institutions participating in the Gaia Multilateral Agreement. The event at a glimpse ---------------------- * Rank: 92 * date and approx. time of event: 2024 Oct 01, 17:42 - 2024 Oct 01, 18:24 * geocentric midpoint of event [JD]: 2460585.25264383 * magnitude of target star: 9.74 * magnitude drop [mag]: 7.50 * estimated maximum duration [s]: 4.280 * Moon: 1 % sunlit, 116° distance * Sun: 128° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 22 * 1 sigma uncertainty interval [path widths]: +/- 0.49 * 1 sigma uncertainty interval [seconds]: +/- 3.9 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.012, +/- 0.004) * 1 sigma uncertainty ellipse (major, minor, PA): (0.012", 0.004", 88°) * approx speed of asteroid's shadow [km/s]: 4.9785 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 1261-01106-1 by 2474 Ruby on 2024 Oct 1 Centre Star Star Sun Path Limits Error Limits Alt E. Longitude Latitude U.T. Alt Az Alt Limit 1 Limit 2 Limit 3 Limit 4 Crn o ' " o ' " h m s o o o o ' " o ' " o ' " o ' " Latitude Latitude Latitude Latitude 61 0 0 -39 16 31 18 24 14.6 0 61 -43 -39 9 34 -39 23 28 -39 2 40 .. .. .. .... 62 0 0 -38 50 4 18 24 14.5 1 60 -44 -38 43 5 -38 57 2 -38 36 11 -39 3 58 0.02 63 0 0 -38 23 6 18 24 14.0 2 59 -45 -38 16 6 -38 30 6 -38 9 10 -38 37 3 0.16 64 0 0 -37 55 36 18 24 13.1 3 59 -46 -37 48 35 -38 2 38 -37 41 37 -38 9 36 0.22 65 0 0 -37 27 35 18 24 11.9 4 58 -46 -37 20 33 -37 34 38 -37 13 34 -37 41 38 0.24 66 0 0 -36 59 4 18 24 10.4 5 58 -47 -36 52 0 -37 6 8 -36 44 59 -37 13 9 0.26 67 0 0 -36 30 2 18 24 8.5 6 57 -48 -36 22 56 -36 37 7 -36 15 55 -36 44 10 0.27 68 0 0 -36 0 29 18 24 6.2 7 56 -49 -35 53 23 -36 7 36 -35 46 20 -36 14 40 0.28 69 0 0 -35 30 27 18 24 3.6 7 56 -49 -35 23 19 -35 37 35 -35 16 15 -35 44 41 0.29 70 0 0 -34 59 56 18 24 0.6 8 55 -50 -34 52 46 -35 7 5 -34 45 41 -35 14 12 0.29 71 0 0 -34 28 55 18 23 57.2 9 55 -51 -34 21 45 -34 36 6 -34 14 38 -34 43 13 0.30 72 0 0 -33 57 26 18 23 53.3 10 54 -52 -33 50 14 -34 4 38 -33 43 7 -34 11 47 0.30 73 0 0 -33 25 29 18 23 49.1 11 54 -52 -33 18 16 -33 32 42 -33 11 8 -33 39 52 0.30 74 0 0 -32 53 5 18 23 44.5 12 53 -53 -32 45 51 -33 0 19 -32 38 41 -33 7 30 0.31 75 0 0 -32 20 14 18 23 39.4 13 53 -54 -32 12 59 -32 27 29 -32 5 48 -32 34 41 0.31 76 0 0 -31 46 57 18 23 33.9 14 52 -54 -31 39 41 -31 54 13 -31 32 29 -32 1 25 0.31 77 0 0 -31 13 14 18 23 28.0 15 51 -55 -31 5 58 -31 20 31 -30 58 45 -31 27 45 0.31 78 0 0 -30 39 7 18 23 21.6 16 51 -56 -30 31 50 -30 46 25 -30 24 36 -30 53 40 0.31 79 0 0 -30 4 37 18 23 14.8 17 50 -56 -29 57 18 -30 11 55 -29 50 4 -30 19 10 0.31 80 0 0 -29 29 43 18 23 7.6 18 50 -57 -29 22 24 -29 37 2 -29 15 9 -29 44 18 0.32 81 0 0 -28 54 27 18 22 59.9 19 49 -58 -28 47 7 -29 1 47 -28 39 52 -29 9 3 0.32 82 0 0 -28 18 50 18 22 51.8 20 49 -58 -28 11 30 -28 26 10 -28 4 14 -28 33 28 0.32 83 0 0 -27 42 53 18 22 43.2 21 48 -59 -27 35 32 -27 50 14 -27 28 15 -27 57 31 0.32 84 0 0 -27 6 36 18 22 34.1 22 48 -59 -26 59 15 -27 13 57 -26 51 58 -27 21 16 0.32 85 0 0 -26 30 1 18 22 24.6 23 47 -60 -26 22 40 -26 37 23 -26 15 22 -26 44 42 0.32 86 0 0 -25 53 9 18 22 14.7 25 47 -60 -25 45 47 -26 0 31 -25 38 29 -26 7 50 0.32 87 0 0 -25 16 1 18 22 4.2 26 46 -61 -25 8 39 -25 23 23 -25 1 21 -25 30 42 0.32 88 0 0 -24 38 37 18 21 53.4 27 46 -61 -24 31 15 -24 46 0 -24 23 57 -24 53 19 0.32 89 0 0 -24 1 0 18 21 42.0 28 46 -62 -23 53 37 -24 8 23 -23 46 19 -24 15 42 0.32 90 0 0 -23 23 10 18 21 30.2 29 45 -62 -23 15 47 -23 30 32 -23 8 29 -23 37 52 0.32 91 0 0 -22 45 8 18 21 18.0 30 45 -62 -22 37 45 -22 52 30 -22 30 27 -22 59 50 0.32 92 0 0 -22 6 55 18 21 5.3 31 44 -63 -21 59 33 -22 14 18 -21 52 14 -22 21 37 0.32 93 0 0 -21 28 33 18 20 52.2 32 44 -63 -21 21 11 -21 35 56 -21 13 53 -21 43 15 0.32 94 0 0 -20 50 3 18 20 38.6 33 43 -63 -20 42 41 -20 57 25 -20 35 23 -21 4 45 0.32 95 0 0 -20 11 26 18 20 24.7 34 43 -63 -20 4 4 -20 18 48 -19 56 46 -20 26 7 0.32 96 0 0 -19 32 43 18 20 10.2 35 42 -63 -19 25 21 -19 40 5 -19 18 4 -19 47 23 0.32 97 0 0 -18 53 55 18 19 55.4 36 42 -63 -18 46 34 -19 1 17 -18 39 17 -19 8 35 0.32 98 0 0 -18 15 4 18 19 40.1 37 41 -63 -18 7 43 -18 22 25 -18 0 26 -18 29 43 0.32 99 0 0 -17 36 11 18 19 24.5 38 41 -63 -17 28 50 -17 43 31 -17 21 34 -17 50 49 0.32 100 0 0 -16 57 16 18 19 8.4 39 40 -63 -16 49 56 -17 4 36 -16 42 41 -17 11 53 0.32 101 0 0 -16 18 22 18 18 52.0 41 40 -63 -16 11 3 -16 25 42 -16 3 48 -16 32 58 0.32 102 0 0 -15 39 29 18 18 35.2 42 39 -63 -15 32 10 -15 46 48 -15 24 56 -15 54 4 0.32 103 0 0 -15 0 39 18 18 18.0 43 39 -63 -14 53 21 -15 7 57 -14 46 7 -15 15 12 0.32 104 0 0 -14 21 52 18 18 0.4 44 38 -62 -14 14 34 -14 29 9 -14 7 21 -14 36 23 0.32 105 0 0 -13 43 9 18 17 42.5 45 38 -62 -13 35 53 -13 50 26 -13 28 41 -13 57 40 0.32 106 0 0 -13 4 33 18 17 24.3 46 37 -62 -12 57 17 -13 11 49 -12 50 6 -13 19 2 0.32 107 0 0 -12 26 4 18 17 5.8 47 37 -61 -12 18 49 -12 33 19 -12 11 38 -12 40 31 0.32 108 0 0 -11 47 42 18 16 46.9 48 36 -61 -11 40 28 -11 54 56 -11 33 18 -12 2 7 0.32 109 0 0 -11 9 30 18 16 27.7 49 36 -60 -11 2 17 -11 16 43 -10 55 8 -11 23 53 0.32 110 0 0 -10 31 27 18 16 8.3 50 35 -60 -10 24 16 -10 38 40 -10 17 7 -10 45 49 0.32 111 0 0 - 9 53 36 18 15 48.5 51 34 -59 - 9 46 25 -10 0 48 - 9 39 18 -10 7 56 0.31 112 0 0 - 9 15 57 18 15 28.5 52 34 -59 - 9 8 47 - 9 23 7 - 9 1 41 - 9 30 14 0.31 113 0 0 - 8 38 31 18 15 8.3 53 33 -58 - 8 31 22 - 8 45 40 - 8 24 17 - 8 52 46 0.31 114 0 0 - 8 1 18 18 14 47.8 54 32 -58 - 7 54 10 - 8 8 26 - 7 47 6 - 8 15 31 0.31 115 0 0 - 7 24 21 18 14 27.1 55 32 -57 - 7 17 14 - 7 31 28 - 7 10 11 - 7 38 32 0.31 116 0 0 - 6 47 39 18 14 6.2 56 31 -56 - 6 40 33 - 6 54 45 - 6 33 31 - 7 1 47 0.31 117 0 0 - 6 11 13 18 13 45.1 57 30 -56 - 6 4 9 - 6 18 18 - 5 57 8 - 6 25 20 0.31 118 0 0 - 5 35 5 18 13 23.7 58 29 -55 - 5 28 2 - 5 42 9 - 5 21 3 - 5 49 9 0.31 119 0 0 - 4 59 15 18 13 2.3 59 28 -54 - 4 52 13 - 5 6 18 - 4 45 15 - 5 13 17 0.31 120 0 0 - 4 23 44 18 12 40.6 60 27 -53 - 4 16 43 - 4 30 45 - 4 9 46 - 4 37 43 0.31 121 0 0 - 3 48 33 18 12 18.8 61 26 -53 - 3 41 33 - 3 55 33 - 3 34 37 - 4 2 29 0.31 122 0 0 - 3 13 41 18 11 56.9 62 25 -52 - 3 6 43 - 3 20 40 - 2 59 48 - 3 27 36 0.31 123 0 0 - 2 39 11 18 11 34.8 63 24 -51 - 2 32 14 - 2 46 8 - 2 25 20 - 2 53 3 0.31 124 0 0 - 2 5 2 18 11 12.7 64 23 -50 - 1 58 6 - 2 11 58 - 1 51 14 - 2 18 51 0.30 125 0 0 - 1 31 15 18 10 50.4 64 21 -49 - 1 24 21 - 1 38 10 - 1 17 29 - 1 45 2 0.30 126 0 0 - 0 57 51 18 10 28.0 65 20 -49 - 0 50 58 - 1 4 45 - 0 44 8 - 1 11 36 0.30 127 0 0 - 0 24 50 18 10 5.6 66 18 -48 - 0 17 58 - 0 31 43 - 0 11 10 - 0 38 32 0.30 128 0 0 0 7 47 18 9 43.1 67 17 -47 0 14 38 0 0 55 0 21 25 - 0 5 53 0.30 129 0 0 0 39 59 18 9 20.6 68 15 -46 0 46 49 0 33 9 0 53 35 0 26 22 0.30 130 0 0 1 11 47 18 8 58.0 68 13 -45 1 18 36 1 4 58 1 25 20 0 58 13 0.30 131 0 0 1 43 10 18 8 35.3 69 11 -44 1 49 57 1 36 22 1 56 40 1 29 38 0.30 132 0 0 2 14 7 18 8 12.7 70 9 -43 2 20 53 2 7 20 2 27 35 2 0 37 0.30 133 0 0 2 44 38 18 7 50.0 70 7 -42 2 51 22 2 37 53 2 58 3 2 31 11 0.30 134 0 0 3 14 42 18 7 27.4 71 5 -42 3 21 26 3 7 58 3 28 5 3 1 18 0.30 135 0 0 3 44 20 18 7 4.7 71 2 -41 3 51 2 3 37 37 3 57 41 3 30 58 0.30 136 0 0 4 13 30 18 6 42.1 72 359 -40 4 20 11 4 6 49 4 26 49 4 0 11 0.29 137 0 0 4 42 14 18 6 19.5 72 357 -39 4 48 53 4 35 34 4 55 29 4 28 57 0.29 138 0 0 5 10 29 18 5 56.9 73 354 -38 5 17 8 5 3 50 5 23 43 4 57 15 0.29 139 0 0 5 38 17 18 5 34.4 73 351 -37 5 44 54 5 31 39 5 51 28 5 25 5 0.29 140 0 0 6 5 36 18 5 11.9 73 348 -36 6 12 12 5 59 0 6 18 45 5 52 26 0.29 141 0 0 6 32 27 18 4 49.5 74 344 -35 6 39 2 6 25 52 6 45 33 6 19 20 0.29 142 0 0 6 58 49 18 4 27.1 74 341 -34 7 5 23 6 52 15 7 11 53 6 45 44 0.29 143 0 0 7 24 42 18 4 4.8 74 338 -33 7 31 15 7 18 10 7 37 44 7 11 40 0.29 144 0 0 7 50 6 18 3 42.6 74 334 -33 7 56 38 7 43 35 8 3 6 7 37 6 0.29 145 0 0 8 15 1 18 3 20.5 74 331 -32 8 21 31 8 8 31 8 27 58 8 2 4 0.29 146 0 0 8 39 27 18 2 58.5 74 328 -31 8 45 56 8 32 58 8 52 21 8 26 31 0.29 147 0 0 9 3 23 18 2 36.6 74 325 -30 9 9 51 8 56 55 9 16 15 8 50 30 0.29 148 0 0 9 26 49 18 2 14.8 73 322 -29 9 33 16 9 20 22 9 39 39 9 13 58 0.29 149 0 0 9 49 46 18 1 53.1 73 319 -28 9 56 12 9 43 20 10 2 34 9 36 57 0.29 150 0 0 10 12 13 18 1 31.5 73 316 -27 10 18 37 10 5 48 10 24 58 9 59 26 0.29 151 0 0 10 34 9 18 1 10.0 72 313 -26 10 40 33 10 27 46 10 46 53 10 21 25 0.29 152 0 0 10 55 36 18 0 48.7 72 311 -25 11 1 59 10 49 13 11 8 18 10 42 54 0.29 153 0 0 11 16 33 18 0 27.5 71 309 -24 11 22 54 11 10 11 11 29 12 11 3 52 0.29 154 0 0 11 36 59 18 0 6.4 71 306 -24 11 43 19 11 30 38 11 49 37 11 24 21 0.29 155 0 0 11 56 55 17 59 45.5 70 304 -23 12 3 15 11 50 35 12 9 31 11 44 19 0.28 156 0 0 12 16 21 17 59 24.7 70 302 -22 12 22 39 12 10 2 12 28 55 12 3 46 0.28 157 0 0 12 35 16 17 59 4.1 69 301 -21 12 41 34 12 28 59 12 47 48 12 22 44 0.28 158 0 0 12 53 42 17 58 43.6 69 299 -20 12 59 58 12 47 25 13 6 12 12 41 11 0.28 159 0 0 13 11 36 17 58 23.3 68 297 -19 13 17 52 13 5 20 13 24 4 12 59 7 0.28 160 0 0 13 29 1 17 58 3.1 67 296 -18 13 35 15 13 22 45 13 41 27 13 16 33 0.28 161 0 0 13 45 54 17 57 43.1 67 295 -17 13 52 8 13 39 40 13 58 19 13 33 29 0.28 162 0 0 14 2 18 17 57 23.3 66 294 -16 14 8 31 13 56 4 14 14 41 13 49 54 0.28 163 0 0 14 18 11 17 57 3.6 65 293 -16 14 24 23 14 11 58 14 30 32 14 5 48 0.28 164 0 0 14 33 33 17 56 44.1 64 292 -15 14 39 45 14 27 21 14 45 53 14 21 12 0.28 165 0 0 14 48 25 17 56 24.8 64 291 -14 14 54 36 14 42 14 15 0 43 14 36 6 0.28 166 0 0 15 2 46 17 56 5.7 63 290 -13 15 8 56 14 56 36 15 15 3 14 50 29 0.28 167 0 0 15 16 37 17 55 46.7 62 289 -12 15 22 46 15 10 28 15 28 53 15 4 21 0.28 168 0 0 15 29 58 17 55 27.9 61 288 -11 15 36 6 15 23 49 15 42 12 15 17 43 0.28 169 0 0 15 42 47 17 55 9.3 61 288 -10 15 48 55 15 36 39 15 55 0 15 30 34 0.28 170 0 0 15 55 7 17 54 50.9 60 287 -9 16 1 14 15 48 59 16 7 18 15 42 55 0.28 171 0 0 16 6 56 17 54 32.6 59 287 -8 16 13 2 16 0 49 16 19 6 15 54 45 0.28 172 0 0 16 18 14 17 54 14.6 58 286 -8 16 24 20 16 12 8 16 30 23 16 6 4 0.28 173 0 0 16 29 2 17 53 56.7 57 286 -7 16 35 7 16 22 56 16 41 10 16 16 53 0.28 174 0 0 16 39 19 17 53 39.0 57 286 -6 16 45 24 16 33 14 16 51 26 16 27 11 0.28 175 0 0 16 49 6 17 53 21.6 56 285 -5 16 55 10 16 43 1 17 1 12 16 36 59 0.28 176 0 0 16 58 22 17 53 4.3 55 285 -4 17 4 26 16 52 18 17 10 27 16 46 17 0.28 177 0 0 17 7 8 17 52 47.2 54 285 -3 17 13 12 17 1 4 17 19 12 16 55 3 0.28 178 0 0 17 15 23 17 52 30.3 53 284 -2 17 21 26 17 9 20 17 27 26 17 3 19 0.28 179 0 0 17 23 8 17 52 13.6 53 284 -1 17 29 11 17 17 5 17 35 10 17 11 5 0.28 180 0 0 17 30 22 17 51 57.1 52 284 0 17 36 24 17 24 19 17 42 23 17 18 19 0.29 -179 0 0 17 37 5 17 51 40.9 51 284 0 17 43 7 17 31 3 17 49 6 17 25 4 0.29 -178 0 0 17 43 18 17 51 24.8 50 284 1 17 49 20 17 37 16 17 55 18 17 31 17 0.29 -177 0 0 17 49 0 17 51 8.9 49 284 2 17 55 2 17 42 59 18 1 0 17 37 0 0.29 -176 0 0 17 54 12 17 50 53.2 48 284 3 18 0 13 17 48 10 18 6 11 17 42 12 0.29 -175 0 0 17 58 52 17 50 37.8 47 284 4 18 4 53 17 52 51 18 10 51 17 46 53 0.29 -174 0 0 18 3 2 17 50 22.6 47 284 5 18 9 3 17 57 1 18 15 1 17 51 3 0.29 -173 0 0 18 6 41 17 50 7.5 46 284 6 18 12 42 18 0 41 18 18 40 17 54 43 0.29 -172 0 0 18 9 50 17 49 52.7 45 284 7 18 15 50 18 3 49 18 21 48 17 57 51 0.29 -171 0 0 18 12 27 17 49 38.1 44 284 7 18 18 27 18 6 26 18 24 25 18 0 29 0.29 -170 0 0 18 14 33 17 49 23.7 43 284 8 18 20 34 18 8 33 18 26 31 18 2 35 0.29 -169 0 0 18 16 9 17 49 9.6 42 284 9 18 22 9 18 10 8 18 28 6 18 4 10 0.29 -168 0 0 18 17 13 17 48 55.7 41 284 10 18 23 13 18 11 12 18 29 10 18 5 14 0.29 -167 0 0 18 17 46 17 48 42.0 41 284 11 18 23 46 18 11 45 18 29 43 18 5 47 0.29 -166 0 0 18 17 47 17 48 28.5 40 284 12 18 23 47 18 11 47 18 29 45 18 5 49 0.29 -165 0 0 18 17 17 17 48 15.2 39 284 13 18 23 18 18 11 17 18 29 15 18 5 19 0.29 -164 0 0 18 16 16 17 48 2.2 38 284 14 18 22 16 18 10 15 18 28 14 18 4 17 0.29 -163 0 0 18 14 43 17 47 49.4 37 285 15 18 20 43 18 8 42 18 26 41 18 2 44 0.29 -162 0 0 18 12 38 17 47 36.9 36 285 15 18 18 39 18 6 37 18 24 37 18 0 39 0.30 -161 0 0 18 10 1 17 47 24.6 35 285 16 18 16 3 18 4 0 18 22 1 17 58 1 0.30 -160 0 0 18 6 53 17 47 12.5 34 285 17 18 12 54 18 0 51 18 18 52 17 54 52 0.30 -159 0 0 18 3 12 17 47 0.7 34 285 18 18 9 14 17 57 10 18 15 12 17 51 11 0.30 -158 0 0 17 58 59 17 46 49.1 33 285 19 18 5 1 17 52 57 18 11 0 17 46 57 0.30 -157 0 0 17 54 14 17 46 37.8 32 286 20 18 0 16 17 48 11 18 6 15 17 42 11 0.30 -156 0 0 17 48 56 17 46 26.7 31 286 21 17 54 58 17 42 53 18 0 58 17 36 52 0.30 -155 0 0 17 43 5 17 46 15.9 30 286 22 17 49 8 17 37 1 17 55 8 17 31 1 0.30 -154 0 0 17 36 41 17 46 5.3 29 286 23 17 42 45 17 30 37 17 48 45 17 24 36 0.30 -153 0 0 17 29 44 17 45 55.0 28 286 24 17 35 49 17 23 40 17 41 50 17 17 38 0.30 -152 0 0 17 22 14 17 45 45.0 27 287 25 17 28 19 17 16 10 17 34 21 17 10 7 0.30 -151 0 0 17 14 11 17 45 35.3 26 287 25 17 20 16 17 8 6 17 26 18 17 2 3 0.30 -150 0 0 17 5 34 17 45 25.8 25 287 26 17 11 40 16 59 28 17 17 43 16 53 25 0.31 -149 0 0 16 56 23 17 45 16.6 25 287 27 17 2 30 16 50 16 17 8 33 16 44 12 0.31 -148 0 0 16 46 38 17 45 7.7 24 287 28 16 52 45 16 40 31 16 58 49 16 34 26 0.31 -147 0 0 16 36 19 17 44 59.1 23 288 29 16 42 27 16 30 11 16 48 31 16 24 5 0.31 -146 0 0 16 25 25 17 44 50.8 22 288 30 16 31 34 16 19 16 16 37 39 16 13 10 0.31 -145 0 0 16 13 56 17 44 42.8 21 288 31 16 20 6 16 7 47 16 26 12 16 1 40 0.31 -144 0 0 16 1 53 17 44 35.1 20 288 32 16 8 3 15 55 42 16 14 10 15 49 35 0.31 -143 0 0 15 49 14 17 44 27.7 19 289 33 15 55 25 15 43 3 16 1 33 15 36 54 0.31 -142 0 0 15 36 0 17 44 20.6 18 289 34 15 42 12 15 29 48 15 48 21 15 23 38 0.31 -141 0 0 15 22 10 17 44 13.8 17 289 35 15 28 23 15 15 57 15 34 33 15 9 46 0.31 -140 0 0 15 7 44 17 44 7.4 16 289 36 15 13 58 15 1 30 15 20 9 14 55 19 0.32 -139 0 0 14 52 42 17 44 1.3 15 290 37 14 58 58 14 46 27 15 5 9 14 40 15 0.32 -138 0 0 14 37 4 17 43 55.6 14 290 38 14 43 20 14 30 48 14 49 33 14 24 34 0.32 -137 0 0 14 20 49 17 43 50.2 13 290 39 14 27 6 14 14 32 14 33 20 14 8 17 0.32 -136 0 0 14 3 57 17 43 45.1 12 290 40 14 10 15 13 57 38 14 16 30 13 51 23 0.32 -135 0 0 13 46 28 17 43 40.5 11 290 41 13 52 47 13 40 8 13 59 3 13 33 51 0.32 -134 0 0 13 28 21 17 43 36.1 10 291 42 13 34 42 13 22 0 13 40 59 13 15 42 0.32 -133 0 0 13 9 36 17 43 32.2 9 291 43 13 15 58 13 3 14 13 22 17 12 56 55 0.32 -132 0 0 12 50 14 17 43 28.7 8 291 44 12 56 37 12 43 50 13 2 57 12 37 30 0.33 -131 0 0 12 30 13 17 43 25.5 7 291 45 12 36 38 12 23 48 12 42 59 12 17 26 0.33 -130 0 0 12 9 34 17 43 22.8 6 292 46 12 16 0 12 3 8 12 22 23 11 56 44 0.33 -129 0 0 11 48 16 17 43 20.5 5 292 47 11 54 44 11 41 48 12 1 8 11 35 24 0.33 -128 0 0 11 26 19 17 43 18.6 4 292 48 11 32 48 11 19 50 11 39 14 11 13 24 0.34 -127 0 0 11 3 43 17 43 17.1 3 292 49 11 10 14 10 57 12 11 16 40 10 50 45 0.34 -126 0 0 10 40 28 17 43 16.0 2 292 50 10 47 0 10 33 55 10 53 28 10 27 26 0.35 -125 0 0 10 16 33 17 43 15.4 1 292 51 10 23 6 10 9 59 10 29 36 10 3 28 0.38 Uncertainty in time = +/- 4 secs Prediction of 2023 Jul 15.6 Data for the target star ------------------------ * name: TYC 1261-01106-1 * constellation : Taurus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 03 52 20.2133 DE: +22 11 12.203 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 03 52 20.2137 DE: +22 11 12.204 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 9.7 * B mag [mag]: 10.0 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (2474) Ruby asteroid class: approx. diameter [km]: 21 approx. diameter ["]: 0.012 distance from Earth [AU]: 2.46800 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#56 date of fit: 2023 Apr 24 source of used astrometry: MPC, JPL number of used observations: 0 number of rejected observations: 0 time covered by the observations: 1800 Jan 01 - 1800 Jan 01 1 sigma uncertainty ellipse (major, minor, PA): 0.012", 0.004", 87.697° remarks: * orbital elements for (2474)Ruby : Mean anomaly = 140.8702693407 deg Arg. of pericenter = 14.6262995288 deg Long. of node = 237.7756816039 deg Inclination = 7.5260295229 deg Eccentricity = 0.2193981071 Semimajor axis = 2.6860665301 AU Perihelion dist = 2.0967486178 AU Mag: H = 11.95, G = 0.15 Epoch of elements : MJD 60584.75263909 TDT (2024 Oct 01.7526) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#562023Apr24,4.28,2024,10,1,18.063452,0.124210,-0.248888,-2.507268,-1.268728,-0.004489,-0.001081,0.000001,0.000000 136.5387,22.2620,-93.60,-3.59,False TYC 1261-01106-1,3.87228145,22.1867230,10.02,9.74,9.59,0.1,0,,3.89678423,22.2619506,7.50,7.20,0,0,0 2474,Ruby,17.24,21.299,2.4680,0,0,-0.644,-4.52,,1.6,0 0,140.7018,2024,10,1,14.6263,237.7757,7.5260,0.21940,2.68607,2.09675,11.95,5.0,0.15 1.496,0.0117,0.0037,88,0.0059,Known errors,0.96,0,-1,-1 20241001_1106-1,60140.60 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 14:27 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org