IOTA/IOTA-ES occultation update for (7563) 1988 BC / UCAC4 344-078758 event on 2024 Aug 12, 22:09 UT Visible from Summary ------- On 2024 Aug 12 UT, the 16.154 km diameter asteroid (7563) 1988 BC will occult a 11.5 mag star in the constellation Scorpius for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 6.71 mag to 18.20 mag (the magnitude of the asteroid) for at most 1.680 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: 99 * date and approx. time of event: 2024 Aug 12, 21:58 - 2024 Aug 12, 22:20 * geocentric midpoint of event [JD]: 2460535.42345567 * magnitude of target star: 11.49 * magnitude drop [mag]: 6.71 * estimated maximum duration [s]: 1.680 * Moon: 52 % sunlit, 13° distance * Sun: 104° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 17 * 1 sigma uncertainty interval [path widths]: +/- 0.28 * 1 sigma uncertainty interval [seconds]: +/- 2.6 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.013, +/- 0.006) * 1 sigma uncertainty ellipse (major, minor, PA): (0.014", 0.002", 113°) * approx speed of asteroid's shadow [km/s]: 9.6133 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 344-078758 by 7563 1988 BC on 2024 Aug 12 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 -118 0 0 40 54 22 21 59 2.2 1 119 53 40 49 15 40 59 30 40 46 25 41 2 20 .... -117 0 0 40 28 35 21 59 2.4 1 120 52 40 23 26 40 33 44 40 20 36 40 36 35 -0.04 -116 0 0 40 2 9 21 59 2.7 2 121 52 39 56 59 40 7 20 39 54 8 40 10 12 -0.11 -115 0 0 39 35 4 21 59 3.2 3 121 51 39 29 53 39 40 16 39 27 0 39 43 8 -0.14 -114 0 0 39 7 19 21 59 3.8 4 122 51 39 2 6 39 12 33 38 59 13 39 15 26 -0.16 -113 0 0 38 38 55 21 59 4.7 5 122 51 38 33 40 38 44 9 38 30 46 38 47 3 -0.17 -112 0 0 38 9 50 21 59 5.7 6 123 50 38 4 34 38 15 6 38 1 39 38 18 0 -0.18 -111 0 0 37 40 4 21 59 6.9 7 124 50 37 34 47 37 45 21 37 31 51 37 48 17 -0.18 -110 0 0 37 9 38 21 59 8.3 8 124 49 37 4 19 37 14 57 37 1 23 37 17 53 -0.19 -109 0 0 36 38 31 21 59 9.9 9 125 49 36 33 10 36 43 51 36 30 13 36 46 48 -0.19 -108 0 0 36 6 42 21 59 11.8 10 126 48 36 1 21 36 12 4 35 58 23 36 15 2 -0.19 -107 0 0 35 34 13 21 59 13.8 11 126 47 35 28 50 35 39 36 35 25 51 35 42 35 -0.19 -106 0 0 35 1 2 21 59 16.1 12 127 47 34 55 38 35 6 27 34 52 39 35 9 26 -0.20 -105 0 0 34 27 11 21 59 18.6 13 127 46 34 21 45 34 32 37 34 18 45 34 35 37 -0.20 -104 0 0 33 52 38 21 59 21.3 14 128 45 33 47 10 33 58 5 33 44 10 34 1 6 -0.20 -103 0 0 33 17 23 21 59 24.3 15 128 45 33 11 55 33 22 52 33 8 53 33 25 54 -0.20 -102 0 0 32 41 28 21 59 27.6 16 129 44 32 35 58 32 46 58 32 32 56 32 50 1 -0.20 -101 0 0 32 4 53 21 59 31.1 17 130 43 31 59 21 32 10 24 31 56 18 32 13 27 -0.20 -100 0 0 31 27 36 21 59 34.8 18 130 43 31 22 4 31 33 9 31 19 0 31 36 13 -0.20 - 99 0 0 30 49 40 21 59 38.8 19 131 42 30 44 6 30 55 14 30 41 1 30 58 18 -0.20 - 98 0 0 30 11 4 21 59 43.1 20 131 41 30 5 29 30 16 39 30 2 23 30 19 44 -0.20 - 97 0 0 29 31 48 21 59 47.7 21 132 40 29 26 12 29 37 25 29 23 6 29 40 31 -0.20 - 96 0 0 28 51 54 21 59 52.6 22 132 39 28 46 17 28 57 32 28 43 10 29 0 39 -0.20 - 95 0 0 28 11 22 21 59 57.7 23 133 39 28 5 44 28 17 1 28 2 37 28 20 9 -0.20 - 94 0 0 27 30 13 22 0 3.2 24 133 38 27 24 33 27 35 53 27 21 26 27 39 1 -0.21 - 93 0 0 26 48 28 22 0 9.0 26 134 37 26 42 47 26 54 9 26 39 38 26 57 17 -0.21 - 92 0 0 26 6 7 22 0 15.0 27 134 36 26 0 25 26 11 49 25 57 16 26 14 58 -0.21 - 91 0 0 25 23 11 22 0 21.4 28 135 35 25 17 28 25 28 54 25 14 19 25 32 4 -0.21 - 90 0 0 24 39 42 22 0 28.1 29 135 34 24 33 58 24 45 26 24 30 48 24 48 36 -0.21 - 89 0 0 23 55 41 22 0 35.1 30 136 33 23 49 56 24 1 26 23 46 46 24 4 36 -0.21 - 88 0 0 23 11 9 22 0 42.4 31 137 32 23 5 24 23 16 55 23 2 13 23 20 6 -0.21 - 87 0 0 22 26 8 22 0 50.0 33 137 31 22 20 22 22 31 54 22 17 10 22 35 5 -0.21 - 86 0 0 21 40 38 22 0 58.0 34 138 30 21 34 52 21 46 25 21 31 40 21 49 37 -0.21 - 85 0 0 20 54 43 22 1 6.2 35 138 29 20 48 55 21 0 30 20 45 43 21 3 42 -0.21 - 84 0 0 20 8 22 22 1 14.8 36 139 28 20 2 34 20 14 10 19 59 22 20 17 23 -0.21 - 83 0 0 19 21 38 22 1 23.7 38 139 27 19 15 50 19 27 27 19 12 38 19 30 40 -0.21 - 82 0 0 18 34 34 22 1 33.0 39 140 26 18 28 45 18 40 23 18 25 32 18 43 35 -0.21 - 81 0 0 17 47 10 22 1 42.5 40 140 25 17 41 21 17 52 59 17 38 8 17 56 12 -0.21 - 80 0 0 16 59 28 22 1 52.3 41 141 24 16 53 39 17 5 18 16 50 26 17 8 31 -0.21 - 79 0 0 16 11 32 22 2 2.4 42 141 23 16 5 42 16 17 21 16 2 29 16 20 34 -0.21 - 78 0 0 15 23 22 22 2 12.9 44 142 21 15 17 32 15 29 11 15 14 19 15 32 25 -0.21 - 77 0 0 14 35 1 22 2 23.6 45 142 20 14 29 11 14 40 51 14 25 58 14 44 4 -0.21 - 76 0 0 13 46 31 22 2 34.6 46 143 19 13 40 42 13 52 21 13 37 29 13 55 34 -0.22 - 75 0 0 12 57 55 22 2 45.9 47 144 18 12 52 6 13 3 45 12 48 53 13 6 58 -0.22 - 74 0 0 12 9 15 22 2 57.4 49 144 17 12 3 26 12 15 4 12 0 13 12 18 17 -0.22 - 73 0 0 11 20 33 22 3 9.2 50 145 16 11 14 44 11 26 22 11 11 31 11 29 35 -0.22 - 72 0 0 10 31 51 22 3 21.3 51 145 14 10 26 3 10 37 39 10 22 50 10 40 52 -0.22 - 71 0 0 9 43 12 22 3 33.6 52 146 13 9 37 24 9 49 0 9 34 12 9 52 12 -0.22 - 70 0 0 8 54 38 22 3 46.1 54 147 12 8 48 51 9 0 25 8 45 39 9 3 37 -0.22 - 69 0 0 8 6 11 22 3 58.8 55 148 11 8 0 25 8 11 58 7 57 13 8 15 10 -0.22 - 68 0 0 7 17 54 22 4 11.7 56 148 10 7 12 8 7 23 40 7 8 57 7 26 52 -0.22 - 67 0 0 6 29 49 22 4 24.9 57 149 8 6 24 4 6 35 34 6 20 53 6 38 45 -0.22 - 66 0 0 5 41 58 22 4 38.2 59 150 7 5 36 14 5 47 43 5 33 4 5 50 53 -0.22 - 65 0 0 4 54 24 22 4 51.6 60 151 6 4 48 41 5 0 7 4 45 31 5 3 17 -0.22 - 64 0 0 4 7 8 22 5 5.2 61 152 5 4 1 26 4 12 50 3 58 17 4 16 0 -0.22 - 63 0 0 3 20 13 22 5 18.9 62 153 4 3 14 32 3 25 54 3 11 23 3 29 3 -0.23 - 62 0 0 2 33 40 22 5 32.8 63 155 2 2 28 0 2 39 20 2 24 52 2 42 29 -0.23 - 61 0 0 1 47 32 22 5 46.7 65 156 1 1 41 53 1 53 11 1 38 46 1 56 19 -0.23 - 60 0 0 1 1 51 22 6 0.8 66 158 0 0 56 13 1 7 28 0 53 6 1 10 35 -0.23 - 59 0 0 0 16 37 22 6 14.9 67 159 -1 0 11 1 0 22 14 0 7 55 0 25 20 -0.23 - 58 0 0 - 0 28 6 22 6 29.1 68 161 -2 - 0 33 41 - 0 22 31 - 0 36 46 - 0 19 25 -0.23 - 57 0 0 - 1 12 18 22 6 43.4 69 163 -4 - 1 17 52 - 1 6 44 - 1 20 56 - 1 3 39 -0.23 - 56 0 0 - 1 55 57 22 6 57.7 70 165 -5 - 2 1 29 - 1 50 24 - 2 4 33 - 1 47 20 -0.23 - 55 0 0 - 2 39 1 22 7 12.0 71 167 -6 - 2 44 32 - 2 33 30 - 2 47 35 - 2 30 27 -0.23 - 54 0 0 - 3 21 29 22 7 26.3 72 170 -7 - 3 26 58 - 3 15 59 - 3 30 1 - 3 12 57 -0.23 - 53 0 0 - 4 3 20 22 7 40.6 72 173 -8 - 4 8 48 - 3 57 52 - 4 11 49 - 3 54 50 -0.23 - 52 0 0 - 4 44 33 22 7 55.0 73 176 -10 - 4 49 59 - 4 39 6 - 4 53 0 - 4 36 5 -0.24 - 51 0 0 - 5 25 6 22 8 9.3 74 179 -11 - 5 30 31 - 5 19 41 - 5 33 30 - 5 16 41 -0.24 - 50 0 0 - 6 4 59 22 8 23.5 75 183 -12 - 6 10 22 - 5 59 35 - 6 13 21 - 5 56 36 -0.24 - 49 0 0 - 6 44 10 22 8 37.7 75 187 -13 - 6 49 32 - 6 38 48 - 6 52 30 - 6 35 50 -0.24 - 48 0 0 - 7 22 39 22 8 51.9 76 191 -14 - 7 28 0 - 7 17 19 - 7 30 57 - 7 14 22 -0.24 - 47 0 0 - 8 0 26 22 9 6.0 76 196 -16 - 8 5 45 - 7 55 7 - 8 8 41 - 7 52 11 -0.24 - 46 0 0 - 8 37 29 22 9 20.1 76 200 -17 - 8 42 46 - 8 32 11 - 8 45 41 - 8 29 16 -0.24 - 45 0 0 - 9 13 47 22 9 34.0 76 205 -18 - 9 19 3 - 9 8 32 - 9 21 58 - 9 5 37 -0.24 - 44 0 0 - 9 49 22 22 9 47.9 76 210 -19 - 9 54 36 - 9 44 8 - 9 57 29 - 9 41 14 -0.24 - 43 0 0 -10 24 11 22 10 1.7 76 215 -20 -10 29 23 -10 18 58 -10 32 16 -10 16 5 -0.24 - 42 0 0 -10 58 15 22 10 15.4 76 219 -21 -11 3 25 -10 53 3 -11 6 17 -10 50 11 -0.24 - 41 0 0 -11 31 33 22 10 28.9 76 224 -22 -11 36 42 -11 26 23 -11 39 33 -11 23 32 -0.24 - 40 0 0 -12 4 5 22 10 42.4 76 228 -23 -12 9 12 -11 58 57 -12 12 3 -11 56 6 -0.24 - 39 0 0 -12 35 50 22 10 55.7 75 232 -25 -12 40 57 -12 30 44 -12 43 46 -12 27 55 -0.24 - 38 0 0 -13 6 50 22 11 9.0 75 235 -26 -13 11 55 -13 1 45 -13 14 43 -12 58 56 -0.25 - 37 0 0 -13 37 3 22 11 22.1 74 238 -27 -13 42 7 -13 32 0 -13 44 54 -13 29 12 -0.25 - 36 0 0 -14 6 30 22 11 35.0 73 241 -28 -14 11 32 -14 1 28 -14 14 19 -13 58 41 -0.25 - 35 0 0 -14 35 11 22 11 47.8 73 244 -29 -14 40 11 -14 30 10 -14 42 57 -14 27 24 -0.25 - 34 0 0 -15 3 5 22 12 0.5 72 246 -30 -15 8 4 -14 58 6 -15 10 49 -14 55 20 -0.25 - 33 0 0 -15 30 13 22 12 13.1 71 249 -31 -15 35 10 -15 25 15 -15 37 55 -15 22 30 -0.25 - 32 0 0 -15 56 35 22 12 25.5 70 250 -32 -16 1 31 -15 51 38 -16 4 15 -15 48 54 -0.25 - 31 0 0 -16 22 10 22 12 37.7 70 252 -33 -16 27 5 -16 17 15 -16 29 48 -16 14 32 -0.25 - 30 0 0 -16 47 0 22 12 49.8 69 254 -34 -16 51 54 -16 42 6 -16 54 36 -16 39 24 -0.25 - 29 0 0 -17 11 4 22 13 1.8 68 255 -35 -17 15 57 -17 6 12 -17 18 38 -17 3 30 -0.25 - 28 0 0 -17 34 23 22 13 13.6 67 256 -36 -17 39 14 -17 29 32 -17 41 55 -17 26 51 -0.25 - 27 0 0 -17 56 56 22 13 25.3 66 257 -37 -18 1 46 -17 52 6 -18 4 27 -17 49 26 -0.25 - 26 0 0 -18 18 45 22 13 36.8 65 258 -38 -18 23 34 -18 13 56 -18 26 13 -18 11 16 -0.25 - 25 0 0 -18 39 49 22 13 48.1 64 259 -39 -18 44 36 -18 35 1 -18 47 15 -18 32 22 -0.25 - 24 0 0 -19 0 8 22 13 59.3 63 260 -40 -19 4 54 -18 55 21 -19 7 33 -18 52 43 -0.25 - 23 0 0 -19 19 43 22 14 10.3 62 260 -41 -19 24 28 -19 14 57 -19 27 6 -19 12 20 -0.25 - 22 0 0 -19 38 34 22 14 21.2 62 261 -42 -19 43 18 -19 33 50 -19 45 56 -19 31 12 -0.25 - 21 0 0 -19 56 41 22 14 31.9 61 261 -43 -20 1 25 -19 51 58 -20 4 1 -19 49 21 -0.25 - 20 0 0 -20 14 5 22 14 42.5 60 262 -44 -20 18 48 -20 9 23 -20 21 24 -20 6 47 -0.25 - 19 0 0 -20 30 46 22 14 52.9 59 262 -45 -20 35 28 -20 26 5 -20 38 3 -20 23 29 -0.25 - 18 0 0 -20 46 45 22 15 3.1 58 262 -46 -20 51 25 -20 42 4 -20 54 0 -20 39 29 -0.25 - 17 0 0 -21 2 0 22 15 13.2 57 263 -47 -21 6 40 -20 57 21 -21 9 14 -20 54 46 -0.25 - 16 0 0 -21 16 34 22 15 23.1 56 263 -48 -21 21 12 -21 11 55 -21 23 47 -21 9 21 -0.25 - 15 0 0 -21 30 25 22 15 32.9 55 263 -49 -21 35 3 -21 25 47 -21 37 37 -21 23 13 -0.25 - 14 0 0 -21 43 35 22 15 42.5 54 263 -50 -21 48 12 -21 38 58 -21 50 45 -21 36 24 -0.25 - 13 0 0 -21 56 3 22 15 52.0 53 263 -51 -22 0 40 -21 51 27 -22 3 13 -21 48 54 -0.25 - 12 0 0 -22 7 51 22 16 1.3 52 263 -52 -22 12 26 -22 3 15 -22 14 59 -22 0 42 -0.25 - 11 0 0 -22 18 57 22 16 10.5 51 263 -53 -22 23 32 -22 14 22 -22 26 4 -22 11 49 -0.25 - 10 0 0 -22 29 23 22 16 19.5 50 263 -54 -22 33 57 -22 24 48 -22 36 29 -22 22 16 -0.25 - 9 0 0 -22 39 8 22 16 28.3 49 263 -55 -22 43 42 -22 34 34 -22 46 13 -22 32 2 -0.25 - 8 0 0 -22 48 13 22 16 37.0 48 263 -56 -22 52 47 -22 43 40 -22 55 18 -22 41 8 -0.25 - 7 0 0 -22 56 38 22 16 45.6 48 263 -57 -23 1 11 -22 52 5 -23 3 42 -22 49 34 -0.25 - 6 0 0 -23 4 24 22 16 54.0 47 263 -58 -23 8 56 -22 59 51 -23 11 27 -22 57 20 -0.25 - 5 0 0 -23 11 30 22 17 2.2 46 262 -59 -23 16 2 -23 6 58 -23 18 32 -23 4 27 -0.25 - 4 0 0 -23 17 57 22 17 10.3 45 262 -60 -23 22 28 -23 13 25 -23 24 58 -23 10 54 -0.25 - 3 0 0 -23 23 44 22 17 18.2 44 262 -60 -23 28 15 -23 19 13 -23 30 45 -23 16 43 -0.25 - 2 0 0 -23 28 53 22 17 26.0 43 262 -61 -23 33 24 -23 24 22 -23 35 54 -23 21 52 -0.25 - 1 0 0 -23 33 22 22 17 33.7 42 262 -62 -23 37 53 -23 28 52 -23 40 23 -23 26 22 -0.25 0 0 0 -23 37 14 22 17 41.1 41 261 -63 -23 41 44 -23 32 43 -23 44 14 -23 30 13 -0.25 1 0 0 -23 40 26 22 17 48.5 40 261 -64 -23 44 57 -23 35 56 -23 47 26 -23 33 26 -0.25 2 0 0 -23 43 0 22 17 55.7 39 261 -65 -23 47 31 -23 38 30 -23 50 0 -23 36 1 -0.25 3 0 0 -23 44 56 22 18 2.7 38 261 -66 -23 49 26 -23 40 26 -23 51 56 -23 37 57 -0.25 4 0 0 -23 46 14 22 18 9.6 37 260 -67 -23 50 44 -23 41 44 -23 53 13 -23 39 15 -0.25 5 0 0 -23 46 54 22 18 16.3 36 260 -68 -23 51 24 -23 42 24 -23 53 53 -23 39 55 -0.24 6 0 0 -23 46 56 22 18 22.9 36 260 -68 -23 51 26 -23 42 26 -23 53 55 -23 39 56 -0.24 7 0 0 -23 46 19 22 18 29.3 35 259 -69 -23 50 49 -23 41 50 -23 53 18 -23 39 20 -0.24 8 0 0 -23 45 5 22 18 35.6 34 259 -70 -23 49 35 -23 40 35 -23 52 4 -23 38 6 -0.24 9 0 0 -23 43 14 22 18 41.8 33 259 -71 -23 47 44 -23 38 43 -23 50 13 -23 36 14 -0.24 10 0 0 -23 40 44 22 18 47.7 32 259 -72 -23 45 14 -23 36 14 -23 47 43 -23 33 44 -0.24 11 0 0 -23 37 36 22 18 53.6 31 258 -73 -23 42 7 -23 33 6 -23 44 36 -23 30 37 -0.24 12 0 0 -23 33 51 22 18 59.2 30 258 -74 -23 38 22 -23 29 21 -23 40 51 -23 26 51 -0.24 13 0 0 -23 29 29 22 19 4.8 29 258 -74 -23 33 59 -23 24 58 -23 36 29 -23 22 28 -0.24 14 0 0 -23 24 28 22 19 10.1 28 257 -75 -23 28 59 -23 19 57 -23 31 29 -23 17 27 -0.24 15 0 0 -23 18 50 22 19 15.3 27 257 -76 -23 23 21 -23 14 18 -23 25 51 -23 11 48 -0.24 16 0 0 -23 12 34 22 19 20.4 26 257 -77 -23 17 5 -23 8 2 -23 19 35 -23 5 32 -0.24 17 0 0 -23 5 40 22 19 25.3 25 256 -78 -23 10 11 -23 1 8 -23 12 42 -22 58 37 -0.24 18 0 0 -22 58 8 22 19 30.0 24 256 -78 -23 2 40 -22 53 36 -23 5 11 -22 51 5 -0.24 19 0 0 -22 49 58 22 19 34.6 23 256 -79 -22 54 31 -22 45 26 -22 57 2 -22 42 55 -0.24 20 0 0 -22 41 11 22 19 39.0 22 255 -80 -22 45 44 -22 36 38 -22 48 15 -22 34 7 -0.24 21 0 0 -22 31 45 22 19 43.3 21 255 -81 -22 36 19 -22 27 12 -22 38 50 -22 24 40 -0.24 22 0 0 -22 21 42 22 19 47.3 21 254 -81 -22 26 16 -22 17 7 -22 28 47 -22 14 36 -0.24 23 0 0 -22 11 0 22 19 51.3 20 254 -82 -22 15 35 -22 6 25 -22 18 6 -22 3 53 -0.24 24 0 0 -21 59 40 22 19 55.0 19 254 -82 -22 4 15 -21 55 5 -22 6 47 -21 52 33 -0.24 25 0 0 -21 47 42 22 19 58.6 18 253 -83 -21 52 18 -21 43 6 -21 54 50 -21 40 33 -0.23 26 0 0 -21 35 5 22 20 2.0 17 253 -83 -21 39 42 -21 30 29 -21 42 14 -21 27 56 -0.23 27 0 0 -21 21 50 22 20 5.2 16 253 -83 -21 26 27 -21 17 13 -21 29 0 -21 14 40 -0.23 28 0 0 -21 7 57 22 20 8.3 15 252 -83 -21 12 34 -21 3 19 -21 15 8 -21 0 45 -0.23 29 0 0 -20 53 24 22 20 11.1 14 252 -83 -20 58 3 -20 48 46 -21 0 37 -20 46 12 -0.23 30 0 0 -20 38 14 22 20 13.8 13 252 -83 -20 42 53 -20 33 34 -20 45 27 -20 31 0 -0.23 31 0 0 -20 22 24 22 20 16.3 12 251 -83 -20 27 4 -20 17 44 -20 29 39 -20 15 9 -0.23 32 0 0 -20 5 55 22 20 18.7 11 251 -82 -20 10 36 -20 1 14 -20 13 11 -19 58 39 -0.23 33 0 0 -19 48 48 22 20 20.8 10 251 -82 -19 53 29 -19 44 6 -19 56 5 -19 41 30 -0.23 34 0 0 -19 31 1 22 20 22.7 9 250 -81 -19 35 43 -19 26 18 -19 38 20 -19 23 42 -0.23 35 0 0 -19 12 35 22 20 24.5 8 250 -80 -19 17 19 -19 7 52 -19 19 55 -19 5 15 -0.23 36 0 0 -18 53 30 22 20 26.0 7 250 -80 -18 58 15 -18 48 46 -19 0 52 -18 46 9 -0.23 37 0 0 -18 33 46 22 20 27.3 6 249 -79 -18 38 31 -18 29 1 -18 41 9 -18 26 23 -0.23 38 0 0 -18 13 23 22 20 28.5 5 249 -78 -18 18 9 -18 8 36 -18 20 47 -18 5 58 -0.23 39 0 0 -17 52 20 22 20 29.4 4 249 -77 -17 57 7 -17 47 33 -17 59 46 -17 44 54 -0.23 40 0 0 -17 30 38 22 20 30.1 3 248 -76 -17 35 26 -17 25 49 -17 38 5 -17 23 10 -0.23 41 0 0 -17 8 16 22 20 30.6 2 248 -75 -17 13 5 -17 3 27 -17 15 45 -17 0 47 -0.22 42 0 0 -16 45 15 22 20 30.9 1 248 -74 -16 50 5 -16 40 25 -16 52 46 -16 37 44 -0.22 Uncertainty in time = +/- 3 secs Prediction of 2023 Jul 15.2 Data for the target star ------------------------ * name: UCAC4 344-078758 * constellation : Scorpius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 16 10 56.2027 DE: -21 21 27.078 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 16 10 56.2025 DE: -21 21 27.078 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 11.5 * B mag [mag]: 11.9 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (7563) 1988 BC asteroid class: approx. diameter [km]: 16 approx. diameter ["]: 0.009 distance from Earth [AU]: 2.51730 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#42 date of fit: 2023 Apr 25 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): 0.014", 0.002", 112.991° remarks: * orbital elements for (7563)1988 BC : Mean anomaly = 103.1455966652 deg Arg. of pericenter = 54.5517253551 deg Long. of node = 83.2006075736 deg Inclination = 12.6345536879 deg Eccentricity = 0.2295787409 Semimajor axis = 2.6777318467 AU Perihelion dist = 2.0629815410 AU Mag: H = 12.87, G = 0.15 Epoch of elements : MJD 60534.92345558 TDT (2024 Aug 12.9235) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#422023Apr25,1.68,2024,8,12,22.162936,0.121783,0.200352,4.642045,-2.809452,0.005370,-0.000974,0.000000,0.000000 -51.1937,-21.4223,-151.22,14.60,False UCAC4 344-078758,16.18227854,-21.3575218,11.87,11.49,11.28,0.0,0,,16.20651871,-21.4223356,6.71,6.47,0,0,0 7563,1988 BC,18.20,16.154,2.5173,0,0,1.162,-9.81,,1.4,0 0,102.9379,2024,8,12,54.5517,83.2006,12.6346,0.22958,2.67773,2.06298,12.87,5.0,0.15 1.276,0.0137,0.0015,113,0.0025,Known errors,1.07,0,-1,-1 20240812_078758,60140.24 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 05:49 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org