IOTA/IOTA-ES occultation update for (395) Delia / HIP 105079 event on 2023 May 24, 02:32 UT Visible from Africa Summary ------- On 2023 May 24 UT, the 49.6930508311641 km diameter asteroid (395) Delia will occult a 6.4 mag star in the constellation Aquarius for observers along a path across Africa. In the case of an occultation, the combined light of the asteroid and the star will drop by 8.86 mag to 15.26 mag (the magnitude of the asteroid) for at most 4.750 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: 100 * date and approx. time of event: 2023 May 24, 02:24 - 2023 May 24, 02:39 * geocentric midpoint of event [JD]: 2460088.60571687 * magnitude of target star: 6.40 * magnitude drop [mag]: 8.86 * estimated maximum duration [s]: 4.750 * Moon: 19 % sunlit, 155° distance * Sun: 105° distance * rough path description: Africa The occultation path -------------------- * approximate projected width [km]: 69 * 1 sigma uncertainty interval [path widths]: +/- 0.08 * 1 sigma uncertainty interval [seconds]: +/- 2.5 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.016, +/- 0.006) * 1 sigma uncertainty ellipse (major, minor, PA): (0.017", 0.002", 70°) * approx speed of asteroid's shadow [km/s]: 10.5369 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of HIP 105079 by 395 Delia on 2023 May 24 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 - 44 0 0 15 50 5 2 24 57.1 0 104 -53 15 30 57 16 9 20 15 27 55 16 12 25 .... - 43 0 0 15 36 25 2 24 57.3 1 104 -53 15 17 20 15 55 37 15 14 18 15 58 41 -0.48 - 42 0 0 15 23 27 2 24 57.7 2 104 -54 15 4 24 15 42 36 15 1 22 15 45 40 -0.69 - 41 0 0 15 11 11 2 24 58.4 3 105 -54 14 52 11 15 30 17 14 49 9 15 33 21 -0.77 - 40 0 0 14 59 37 2 24 59.3 4 105 -54 14 40 39 15 18 41 14 37 38 15 21 44 -0.81 - 39 0 0 14 48 45 2 25 0.5 5 105 -55 14 29 49 15 7 47 14 26 48 15 10 50 -0.84 - 38 0 0 14 38 36 2 25 1.9 6 105 -55 14 19 42 14 57 36 14 16 42 15 0 39 -0.86 - 37 0 0 14 29 10 2 25 3.6 7 106 -55 14 10 18 14 48 8 14 7 17 14 51 10 -0.87 - 36 0 0 14 20 26 2 25 5.5 8 106 -55 14 1 36 14 39 23 13 58 36 14 42 25 -0.88 - 35 0 0 14 12 26 2 25 7.6 9 106 -55 13 53 37 14 31 21 13 50 37 14 34 23 -0.89 - 34 0 0 14 5 9 2 25 10.0 10 106 -55 13 46 21 14 24 2 13 43 21 14 27 4 -0.90 - 33 0 0 13 58 35 2 25 12.7 11 107 -55 13 39 48 14 17 27 13 36 49 14 20 29 -0.90 - 32 0 0 13 52 44 2 25 15.6 12 107 -55 13 33 59 14 11 36 13 31 0 14 14 37 -0.91 - 31 0 0 13 47 38 2 25 18.7 13 107 -55 13 28 53 14 6 28 13 25 54 14 9 30 -0.91 - 30 0 0 13 43 15 2 25 22.0 14 108 -55 13 24 30 14 2 5 13 21 31 14 5 6 -0.92 - 29 0 0 13 39 35 2 25 25.6 15 108 -55 13 20 52 13 58 25 13 17 53 14 1 26 -0.92 - 28 0 0 13 36 40 2 25 29.5 16 108 -55 13 17 57 13 55 29 13 14 58 13 58 30 -0.92 - 27 0 0 13 34 29 2 25 33.5 17 109 -54 13 15 46 13 53 18 13 12 47 13 56 19 -0.93 - 26 0 0 13 33 2 2 25 37.8 18 109 -54 13 14 19 13 51 52 13 11 20 13 54 52 -0.93 - 25 0 0 13 32 20 2 25 42.3 19 109 -54 13 13 36 13 51 9 13 10 37 13 54 10 -0.93 - 24 0 0 13 32 22 2 25 47.1 20 110 -53 13 13 38 13 51 12 13 10 39 13 54 13 -0.93 - 23 0 0 13 33 9 2 25 52.1 21 110 -53 13 14 24 13 51 59 13 11 25 13 55 0 -0.94 - 22 0 0 13 34 41 2 25 57.3 21 110 -53 13 15 55 13 53 32 13 12 56 13 56 33 -0.94 - 21 0 0 13 36 57 2 26 2.7 22 111 -52 13 18 11 13 55 49 13 15 11 13 58 50 -0.94 - 20 0 0 13 39 58 2 26 8.4 23 111 -52 13 21 11 13 58 52 13 18 12 14 1 53 -0.94 - 19 0 0 13 43 45 2 26 14.3 24 111 -51 13 24 57 14 2 40 13 21 57 14 5 41 -0.94 - 18 0 0 13 48 17 2 26 20.3 25 112 -51 13 29 27 14 7 13 13 26 27 14 10 15 -0.94 - 17 0 0 13 53 34 2 26 26.7 26 112 -50 13 34 43 14 12 32 13 31 42 14 15 34 -0.95 - 16 0 0 13 59 37 2 26 33.2 27 113 -49 13 40 43 14 18 36 13 37 43 14 21 39 -0.95 - 15 0 0 14 6 25 2 26 39.9 28 113 -49 13 47 30 14 25 26 13 44 29 14 28 29 -0.95 - 14 0 0 14 13 59 2 26 46.9 29 114 -48 13 55 2 14 33 3 13 52 1 14 36 6 -0.95 - 13 0 0 14 22 19 2 26 54.0 29 114 -48 14 3 19 14 41 25 14 0 18 14 44 28 -0.95 - 12 0 0 14 31 25 2 27 1.4 30 115 -47 14 12 22 14 50 33 14 9 20 14 53 37 -0.95 - 11 0 0 14 41 16 2 27 8.9 31 116 -46 14 22 11 15 0 27 14 19 9 15 3 32 -0.95 - 10 0 0 14 51 54 2 27 16.7 32 116 -45 14 32 46 15 11 8 14 29 43 15 14 13 -0.95 - 9 0 0 15 3 18 2 27 24.6 33 117 -45 14 44 7 15 22 35 14 41 4 15 25 40 -0.95 - 8 0 0 15 15 28 2 27 32.8 34 118 -44 14 56 14 15 34 48 14 53 10 15 37 54 -0.96 - 7 0 0 15 28 24 2 27 41.1 34 118 -43 15 9 6 15 47 48 15 6 2 15 50 54 -0.96 - 6 0 0 15 42 6 2 27 49.6 35 119 -42 15 22 45 16 1 34 15 19 40 16 4 41 -0.96 - 5 0 0 15 56 35 2 27 58.3 36 120 -41 15 37 10 16 16 6 15 34 5 16 19 14 -0.96 - 4 0 0 16 11 50 2 28 7.2 37 121 -40 15 52 21 16 31 25 15 49 15 16 34 34 -0.96 - 3 0 0 16 27 52 2 28 16.3 37 122 -40 16 8 19 16 47 31 16 5 12 16 50 40 -0.96 - 2 0 0 16 44 39 2 28 25.5 38 122 -39 16 25 2 17 4 23 16 21 55 17 7 33 -0.96 - 1 0 0 17 2 13 2 28 34.9 39 123 -38 16 42 32 17 22 2 16 39 24 17 25 12 -0.96 0 0 0 17 20 34 2 28 44.5 39 124 -37 17 0 47 17 40 27 16 57 38 17 43 38 -0.96 1 0 0 17 39 40 2 28 54.2 40 125 -36 17 19 49 17 59 38 17 16 39 18 2 50 -0.96 2 0 0 17 59 33 2 29 4.1 41 126 -35 17 39 36 18 19 36 17 36 26 18 22 49 -0.96 3 0 0 18 20 11 2 29 14.1 41 127 -34 18 0 10 18 40 20 17 56 58 18 43 34 -0.96 4 0 0 18 41 36 2 29 24.3 42 128 -33 18 21 29 19 1 50 18 18 17 19 5 4 -0.96 5 0 0 19 3 46 2 29 34.6 42 130 -32 18 43 33 19 24 5 18 40 20 19 27 21 -0.96 6 0 0 19 26 41 2 29 45.1 43 131 -31 19 6 23 19 47 7 19 3 9 19 50 23 -0.96 7 0 0 19 50 22 2 29 55.6 43 132 -30 19 29 58 20 10 53 19 26 43 20 14 11 -0.96 8 0 0 20 14 47 2 30 6.3 44 133 -29 19 54 17 20 35 25 19 51 1 20 38 44 -0.96 9 0 0 20 39 58 2 30 17.1 44 135 -28 20 19 21 21 0 42 20 16 4 21 4 2 -0.96 10 0 0 21 5 52 2 30 28.0 44 136 -27 20 45 9 21 26 43 20 41 52 21 30 4 -0.96 11 0 0 21 32 31 2 30 39.0 45 137 -26 21 11 42 21 53 29 21 8 23 21 56 50 -0.96 12 0 0 21 59 53 2 30 50.1 45 139 -25 21 38 57 22 20 58 21 35 37 22 24 21 -0.96 13 0 0 22 27 59 2 31 1.3 45 140 -24 22 6 55 22 49 10 22 3 34 22 52 34 -0.96 14 0 0 22 56 46 2 31 12.5 46 142 -23 22 35 36 23 18 5 22 32 14 23 21 30 -0.96 15 0 0 23 26 16 2 31 23.9 46 143 -22 23 4 59 23 47 42 23 1 35 23 51 8 -0.96 16 0 0 23 56 27 2 31 35.2 46 145 -21 23 35 2 24 18 1 23 31 38 24 21 28 -0.96 17 0 0 24 27 19 2 31 46.7 46 146 -20 24 5 47 24 49 0 24 2 21 24 52 29 -0.96 18 0 0 24 58 51 2 31 58.1 46 148 -18 24 37 11 25 20 40 24 33 44 25 24 10 -0.96 19 0 0 25 31 2 2 32 9.6 46 149 -17 25 9 15 25 52 59 25 5 47 25 56 30 -0.96 20 0 0 26 3 52 2 32 21.1 46 151 -16 25 41 56 26 25 56 25 38 27 26 29 29 -0.96 21 0 0 26 37 19 2 32 32.7 46 153 -15 26 15 15 26 59 31 26 11 45 27 3 5 -0.96 22 0 0 27 11 22 2 32 44.2 46 154 -14 26 49 11 27 33 43 26 45 39 27 37 18 -0.96 23 0 0 27 46 1 2 32 55.7 46 156 -13 27 23 42 28 8 30 27 20 9 28 12 6 -0.96 24 0 0 28 21 14 2 33 7.2 46 157 -12 27 58 47 28 43 52 27 55 13 28 47 29 -0.95 25 0 0 28 57 1 2 33 18.7 46 159 -11 28 34 25 29 19 46 28 30 50 29 23 26 -0.95 26 0 0 29 33 19 2 33 30.1 45 161 -10 29 10 35 29 56 13 29 6 59 29 59 54 -0.95 27 0 0 30 10 8 2 33 41.4 45 162 -9 29 47 16 30 33 11 29 43 38 30 36 53 -0.95 28 0 0 30 47 27 2 33 52.7 45 164 -8 30 24 27 31 10 38 30 20 47 31 14 22 -0.95 29 0 0 31 25 14 2 34 4.0 44 165 -6 31 2 5 31 48 33 30 58 24 31 52 18 -0.95 30 0 0 32 3 27 2 34 15.1 44 167 -5 31 40 10 32 26 55 31 36 27 32 30 41 -0.95 31 0 0 32 42 5 2 34 26.2 44 168 -4 32 18 39 33 5 41 32 14 56 33 9 29 -0.95 32 0 0 33 21 6 2 34 37.1 43 170 -3 32 57 32 33 44 51 32 53 47 33 48 40 -0.95 33 0 0 34 0 29 2 34 47.9 43 171 -2 33 36 47 34 24 22 33 33 1 34 28 12 -0.95 34 0 0 34 40 11 2 34 58.6 42 173 -1 34 16 22 35 4 13 34 12 34 35 8 4 -0.95 35 0 0 35 20 12 2 35 9.1 41 174 0 34 56 14 35 44 22 34 52 26 35 48 15 -0.95 36 0 0 36 0 29 2 35 19.5 41 176 1 35 36 24 36 24 48 35 32 34 36 28 42 -0.95 37 0 0 36 41 1 2 35 29.8 40 177 2 36 16 48 37 5 27 36 12 56 37 9 23 -0.95 38 0 0 37 21 45 2 35 39.8 40 178 3 36 57 24 37 46 19 36 53 32 37 50 16 -0.95 39 0 0 38 2 40 2 35 49.7 39 180 4 37 38 12 38 27 22 37 34 18 38 31 20 -0.95 40 0 0 38 43 44 2 35 59.4 38 181 5 38 19 8 39 8 33 38 15 13 39 12 32 -0.95 41 0 0 39 24 54 2 36 8.9 38 182 6 39 0 11 39 49 51 38 56 15 39 53 51 -0.95 42 0 0 40 6 9 2 36 18.2 37 184 7 39 41 19 40 31 13 39 37 22 40 35 14 -0.95 43 0 0 40 47 27 2 36 27.3 36 185 8 40 22 30 41 12 37 40 18 32 41 16 40 -0.95 44 0 0 41 28 45 2 36 36.2 35 186 9 41 3 41 41 54 2 40 59 42 41 58 6 -0.95 45 0 0 42 10 1 2 36 44.8 35 187 10 41 44 52 42 35 25 41 40 52 42 39 30 -0.94 46 0 0 42 51 14 2 36 53.2 34 188 11 42 25 59 43 16 44 42 21 58 43 20 50 -0.94 47 0 0 43 32 22 2 37 1.4 33 189 12 43 7 0 43 57 57 43 2 59 44 2 4 -0.94 48 0 0 44 13 21 2 37 9.3 32 191 13 43 47 55 44 39 2 43 43 52 44 43 10 -0.94 49 0 0 44 54 11 2 37 17.0 31 192 14 44 28 40 45 19 57 44 24 36 45 24 5 -0.94 50 0 0 45 34 49 2 37 24.5 31 193 15 45 9 13 46 0 40 45 5 9 46 4 49 -0.94 51 0 0 46 15 14 2 37 31.7 30 194 16 45 49 33 46 41 9 45 45 29 46 45 18 -0.94 52 0 0 46 55 23 2 37 38.7 29 195 16 46 29 39 47 21 22 46 25 34 47 25 32 -0.94 53 0 0 47 35 14 2 37 45.4 28 196 17 47 9 27 48 1 17 47 5 21 48 5 28 -0.94 54 0 0 48 14 47 2 37 51.8 27 197 18 47 48 57 48 40 53 47 44 51 48 45 4 -0.94 55 0 0 48 53 59 2 37 58.0 26 198 19 48 28 6 49 20 7 48 23 59 49 24 19 -0.94 56 0 0 49 32 48 2 38 4.0 26 199 20 49 6 53 49 58 59 49 2 46 50 3 11 -0.94 57 0 0 50 11 14 2 38 9.7 25 200 20 49 45 17 50 37 26 49 41 10 50 41 39 -0.94 58 0 0 50 49 13 2 38 15.2 24 201 21 50 23 15 51 15 27 50 19 8 51 19 40 -0.94 59 0 0 51 26 46 2 38 20.4 23 202 22 51 0 47 51 53 1 50 56 40 51 57 14 -0.94 60 0 0 52 3 51 2 38 25.4 22 203 22 51 37 51 52 30 6 51 33 44 52 34 19 -0.94 61 0 0 52 40 26 2 38 30.1 21 204 23 52 14 27 53 6 41 52 10 19 53 10 54 -0.94 62 0 0 53 16 30 2 38 34.6 21 205 24 52 50 31 53 42 45 52 46 24 53 46 58 -0.95 63 0 0 53 52 3 2 38 38.9 20 205 24 53 26 5 54 18 17 53 21 57 54 22 30 -0.95 64 0 0 54 27 3 2 38 43.0 19 206 25 54 1 6 54 53 15 53 56 59 54 57 28 -0.95 65 0 0 55 1 29 2 38 46.8 18 207 26 54 35 34 55 27 40 54 31 27 55 31 52 -0.95 66 0 0 55 35 21 2 38 50.5 18 208 26 55 9 28 56 1 29 55 5 21 56 5 41 -0.95 67 0 0 56 8 38 2 38 53.9 17 209 27 55 42 47 56 34 43 55 38 41 56 38 55 -0.95 68 0 0 56 41 18 2 38 57.1 16 210 27 56 15 31 57 7 21 56 11 25 57 11 32 -0.95 69 0 0 57 13 23 2 39 0.1 15 211 28 56 47 39 57 39 22 56 43 34 57 43 33 -0.95 70 0 0 57 44 51 2 39 3.0 15 212 28 57 19 11 58 10 46 57 15 6 58 14 56 -0.95 71 0 0 58 15 42 2 39 5.6 14 213 29 57 50 6 58 41 33 57 46 2 58 45 42 -0.95 72 0 0 58 45 55 2 39 8.1 13 214 29 58 20 24 59 11 41 58 16 20 59 15 50 -0.95 73 0 0 59 15 31 2 39 10.4 12 215 30 58 50 4 59 41 12 58 46 2 59 45 20 -0.95 74 0 0 59 44 29 2 39 12.6 12 215 30 59 19 7 60 10 5 59 15 6 60 14 12 -0.95 75 0 0 60 12 49 2 39 14.6 11 216 30 59 47 33 60 38 20 59 43 32 60 42 26 -0.95 76 0 0 60 40 32 2 39 16.4 10 217 31 60 15 22 61 5 56 60 11 22 61 10 1 -0.95 77 0 0 61 7 37 2 39 18.1 10 218 31 60 42 33 61 32 55 60 38 34 61 36 59 -0.95 78 0 0 61 34 4 2 39 19.7 9 219 32 61 9 6 61 59 16 61 5 8 62 3 19 -0.95 79 0 0 61 59 54 2 39 21.1 8 220 32 61 35 3 62 25 0 61 31 6 62 29 1 -0.95 80 0 0 62 25 7 2 39 22.4 8 221 32 62 0 23 62 50 6 61 56 27 62 54 6 -0.95 81 0 0 62 49 43 2 39 23.6 7 222 33 62 25 6 63 14 35 62 21 11 63 18 34 -0.95 82 0 0 63 13 43 2 39 24.6 7 223 33 62 49 13 63 38 27 62 45 19 63 42 26 -0.95 83 0 0 63 37 7 2 39 25.6 6 224 33 63 12 44 64 1 43 63 8 51 64 5 41 -0.96 84 0 0 63 59 55 2 39 26.4 5 224 33 63 35 39 64 24 24 63 31 48 64 28 20 -0.96 85 0 0 64 22 8 2 39 27.1 5 225 34 63 58 0 64 46 29 63 54 10 64 50 24 -0.96 86 0 0 64 43 46 2 39 27.8 4 226 34 64 19 46 65 7 59 64 15 57 65 11 53 -0.96 87 0 0 65 4 50 2 39 28.4 4 227 34 64 40 58 65 28 55 64 37 10 65 32 47 -0.96 88 0 0 65 25 21 2 39 28.8 3 228 34 65 1 36 65 49 18 64 57 49 65 53 8 -0.96 89 0 0 65 45 18 2 39 29.2 3 229 35 65 21 41 66 9 7 65 17 56 66 12 56 -0.97 90 0 0 66 4 42 2 39 29.5 2 230 35 65 41 13 66 28 23 65 37 29 66 32 11 -0.97 91 0 0 66 23 35 2 39 29.8 2 231 35 66 0 14 66 47 7 65 56 31 66 50 54 -0.98 92 0 0 66 41 56 2 39 29.9 1 232 35 66 18 43 67 5 20 66 15 1 67 9 5 -0.99 93 0 0 66 59 46 2 39 30.0 1 233 35 66 36 41 67 23 2 66 33 1 67 26 46 -1.02 94 0 0 67 17 6 2 39 30.1 0 234 35 66 54 9 .. .. .. 66 50 30 .. .. .. -1.23 Uncertainty in time = +/- 3 secs Prediction of 2023 Apr 29.2 Data for the target star ------------------------ * name: HIP 105079 * constellation : Aquarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 21 17 13.5224 DE: -13 16 44.360 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 21 17 13.5228 DE: -13 16 44.358 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.500,0.300) * V mag [mag]: 6.4 * Diameter [mas]: 0.20 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (395) Delia asteroid class: approx. diameter [km]: 50 approx. diameter ["]: 0.032 distance from Earth [AU]: 2.11610 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#72 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): 0.017", 0.001", 69.567° remarks: * orbital elements for (395)Delia : Mean anomaly = 20.8865660503 deg Arg. of pericenter = 11.2898304643 deg Long. of node = 259.2503129126 deg Inclination = 3.3543700773 deg Eccentricity = 0.0841498866 Semimajor axis = 2.7841067122 AU Perihelion dist = 2.5498244480 AU Mag: H = 10.50, G = 0.15 Epoch of elements : MJD 60088.10583333 TDT (2023 May 24.1058) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#722023Apr24,4.75,2023,5,24,2.537205,-0.319397,0.612244,5.277425,2.742194,-0.005076,-0.001681,0.000000,0.000000 40.1264,-13.1820,141.15,20.70,False HIP 105079,21.28708954,-13.2789890,0.00,6.40,0.00,0.2,0,,21.30833566,-13.1819650,8.86,0.00,0,0,0 395,Delia,15.26,50.0,2.1161,0,0,1.502,11.40,,3.0,0 0,20.8641,2023,5,24,11.2898,259.2503,3.3544,0.08415,2.78411,2.54982,10.51,5.0,0.15 1.080,0.0173,0.0015,70,0.0026,Known errors,-1.00,-1,-1,-1 20230524_105079,60063.19 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Apr 29, 04:29 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org