IOTA/IOTA-ES occultation update for (7) Iris / UCAC4 339-069723 event on 2023 Mar 16, 16:33 UT Visible from N Australia, Indonesia Summary ------- On 2023 Mar 16 UT, the 222.3 km diameter asteroid (7) Iris will occult a 12.0 mag star in the constellation Libra for observers along a path across N Australia, Indonesia. In the case of an occultation, the combined light of the asteroid and the star will drop by 0.25 mag to 10.51 mag (the magnitude of the asteroid) for at most 61.260 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 Mar 16, 16:02 - 2023 Mar 16, 17:02 * geocentric midpoint of event [JD]: 2460020.18945742 * magnitude of target star: 11.99 * magnitude drop [mag]: 0.25 * estimated maximum duration [s]: 61.260 * Moon: 33 % sunlit, 58° distance * Sun: 128° distance * rough path description: N Australia, Indonesia Additional comments ------------------- low mag drop The occultation path -------------------- * approximate projected width [km]: 224 * 1 sigma uncertainty interval [path widths]: +/- 0.09 * 1 sigma uncertainty interval [seconds]: +/- 7.0 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.016, +/- 0.013) * 1 sigma uncertainty ellipse (major, minor, PA): (0.016", 0.013", 98°) * approx speed of asteroid's shadow [km/s]: 3.6285 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 339-069723 by 7 Iris on 2023 Mar 16 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 69 0 0 10 9 12 17 1 48.4 0 113 -52 .. .. .. 9 2 48 .. .. .. 8 50 25 .... 70 0 0 9 44 16 17 1 47.9 1 113 -53 10 50 55 8 37 53 11 3 23 8 25 31 -0.02 71 0 0 9 19 21 17 1 46.8 3 113 -54 10 25 59 8 12 59 10 38 27 8 0 37 -0.09 72 0 0 8 54 27 17 1 45.0 4 113 -55 10 1 4 7 48 6 10 13 31 7 35 44 -0.12 73 0 0 8 29 35 17 1 42.7 5 113 -56 9 36 10 7 23 15 9 48 37 7 10 54 -0.14 74 0 0 8 4 45 17 1 39.7 6 114 -57 9 11 18 6 58 27 9 23 45 6 46 6 -0.14 75 0 0 7 39 58 17 1 36.2 7 114 -58 8 46 29 6 33 41 8 58 56 6 21 21 -0.15 76 0 0 7 15 14 17 1 32.1 8 114 -59 8 21 43 6 9 0 8 34 9 5 56 39 -0.16 77 0 0 6 50 34 17 1 27.3 9 114 -60 7 57 1 5 44 22 8 9 27 5 32 2 -0.16 78 0 0 6 25 58 17 1 22.0 10 114 -61 7 32 23 5 19 49 7 44 48 5 7 30 -0.16 79 0 0 6 1 28 17 1 16.1 11 114 -62 7 7 50 4 55 22 7 20 15 4 43 3 -0.16 80 0 0 5 37 4 17 1 9.7 12 114 -63 6 43 22 4 31 0 6 55 47 4 18 42 -0.17 81 0 0 5 12 45 17 1 2.7 13 114 -64 6 19 1 4 6 44 6 31 25 3 54 27 -0.17 82 0 0 4 48 33 17 0 55.1 14 115 -65 5 54 46 3 42 36 6 7 9 3 30 18 -0.17 83 0 0 4 24 28 17 0 46.9 15 115 -66 5 30 37 3 18 34 5 43 0 3 6 18 -0.17 84 0 0 4 0 31 17 0 38.3 16 115 -67 5 6 37 2 54 40 5 18 58 2 42 25 -0.17 85 0 0 3 36 42 17 0 29.1 17 115 -68 4 42 44 2 30 55 4 55 5 2 18 40 -0.17 86 0 0 3 13 1 17 0 19.3 18 115 -69 4 18 59 2 7 18 4 31 20 1 55 4 -0.17 87 0 0 2 49 30 17 0 9.0 19 115 -70 3 55 24 1 43 50 4 7 43 1 31 37 -0.17 88 0 0 2 26 7 16 59 58.3 20 115 -71 3 31 57 1 20 32 3 44 16 1 8 19 -0.17 89 0 0 2 2 55 16 59 47.0 21 115 -72 3 8 40 0 57 24 3 20 59 0 45 11 -0.17 90 0 0 1 39 53 16 59 35.2 22 115 -73 2 45 34 0 34 26 2 57 51 0 22 14 -0.17 91 0 0 1 17 1 16 59 22.9 23 115 -74 2 22 38 0 11 39 2 34 54 - 0 0 32 -0.17 92 0 0 0 54 20 16 59 10.2 24 115 -75 1 59 53 - 0 10 58 2 12 8 - 0 23 7 -0.17 93 0 0 0 31 51 16 58 57.0 25 115 -76 1 37 19 - 0 33 22 1 49 34 - 0 45 31 -0.17 94 0 0 0 9 34 16 58 43.3 26 115 -76 1 14 56 - 0 55 35 1 27 10 - 1 7 43 -0.17 95 0 0 - 0 12 32 16 58 29.1 27 115 -77 0 52 46 - 1 17 36 1 4 59 - 1 29 43 -0.17 96 0 0 - 0 34 25 16 58 14.6 28 115 -78 0 30 48 - 1 39 24 0 43 0 - 1 51 31 -0.17 97 0 0 - 0 56 5 16 57 59.5 29 115 -79 0 9 3 - 2 1 0 0 21 14 - 2 13 6 -0.17 98 0 0 - 1 17 33 16 57 44.1 30 115 -80 - 0 12 29 - 2 22 22 - 0 0 19 - 2 34 27 -0.17 99 0 0 - 1 38 47 16 57 28.2 31 115 -81 - 0 33 49 - 2 43 32 - 0 21 39 - 2 55 35 -0.17 100 0 0 - 1 59 47 16 57 12.0 32 115 -81 - 0 54 54 - 3 4 27 - 0 42 46 - 3 16 30 -0.17 101 0 0 - 2 20 34 16 56 55.3 33 115 -82 - 1 15 46 - 3 25 9 - 1 3 39 - 3 37 11 -0.17 102 0 0 - 2 41 7 16 56 38.3 34 115 -83 - 1 36 24 - 3 45 36 - 1 24 17 - 3 57 37 -0.17 103 0 0 - 3 1 25 16 56 20.9 35 115 -83 - 1 56 47 - 4 5 49 - 1 44 42 - 4 17 49 -0.17 104 0 0 - 3 21 28 16 56 3.1 36 115 -84 - 2 16 56 - 4 25 48 - 2 4 51 - 4 37 47 -0.17 105 0 0 - 3 41 17 16 55 44.9 37 116 -84 - 2 36 50 - 4 45 32 - 2 24 46 - 4 57 30 -0.17 106 0 0 - 4 0 51 16 55 26.4 38 116 -84 - 2 56 29 - 5 5 0 - 2 44 26 - 5 16 57 -0.16 107 0 0 - 4 20 9 16 55 7.6 39 116 -84 - 3 15 52 - 5 24 13 - 3 3 51 - 5 36 10 -0.16 108 0 0 - 4 39 12 16 54 48.4 40 116 -84 - 3 35 0 - 5 43 11 - 3 23 0 - 5 55 7 -0.16 109 0 0 - 4 57 59 16 54 28.9 41 116 -83 - 3 53 53 - 6 1 54 - 3 41 53 - 6 13 48 -0.16 110 0 0 - 5 16 31 16 54 9.1 42 116 -83 - 4 12 30 - 6 20 20 - 4 0 31 - 6 32 13 -0.16 111 0 0 - 5 34 46 16 53 49.0 43 116 -82 - 4 30 50 - 6 38 30 - 4 18 53 - 6 50 23 -0.16 112 0 0 - 5 52 46 16 53 28.5 44 116 -82 - 4 48 55 - 6 56 25 - 4 36 58 - 7 8 16 -0.16 113 0 0 - 6 10 29 16 53 7.8 45 116 -81 - 5 6 43 - 7 14 3 - 4 54 47 - 7 25 53 -0.16 114 0 0 - 6 27 55 16 52 46.8 46 116 -80 - 5 24 15 - 7 31 24 - 5 12 20 - 7 43 14 -0.16 115 0 0 - 6 45 5 16 52 25.6 47 116 -80 - 5 41 30 - 7 48 29 - 5 29 36 - 8 0 18 -0.16 116 0 0 - 7 1 59 16 52 4.1 48 116 -79 - 5 58 28 - 8 5 17 - 5 46 35 - 8 17 5 -0.16 117 0 0 - 7 18 35 16 51 42.3 49 116 -78 - 6 15 9 - 8 21 49 - 6 3 17 - 8 33 36 -0.16 118 0 0 - 7 34 54 16 51 20.3 50 116 -77 - 6 31 34 - 8 38 3 - 6 19 43 - 8 49 49 -0.16 119 0 0 - 7 50 56 16 50 58.0 51 116 -77 - 6 47 41 - 8 54 1 - 6 35 51 - 9 5 46 -0.16 120 0 0 - 8 6 41 16 50 35.5 52 116 -76 - 7 3 31 - 9 9 41 - 6 51 42 - 9 21 25 -0.16 121 0 0 - 8 22 9 16 50 12.8 52 116 -75 - 7 19 3 - 9 25 4 - 7 7 15 - 9 36 47 -0.16 122 0 0 - 8 37 20 16 49 49.9 53 116 -74 - 7 34 18 - 9 40 10 - 7 22 31 - 9 51 52 -0.15 123 0 0 - 8 52 12 16 49 26.8 54 116 -73 - 7 49 16 - 9 54 58 - 7 37 30 -10 6 39 -0.15 124 0 0 - 9 6 48 16 49 3.5 55 116 -72 - 8 3 56 -10 9 29 - 7 52 11 -10 21 9 -0.15 125 0 0 - 9 21 5 16 48 39.9 56 117 -71 - 8 18 18 -10 23 42 - 8 6 34 -10 35 22 -0.15 126 0 0 - 9 35 5 16 48 16.2 57 117 -71 - 8 32 23 -10 37 37 - 8 20 39 -10 49 16 -0.15 127 0 0 - 9 48 47 16 47 52.4 58 117 -70 - 8 46 9 -10 51 15 - 8 34 26 -11 2 53 -0.15 128 0 0 -10 2 12 16 47 28.3 59 117 -69 - 8 59 38 -11 4 35 - 8 47 56 -11 16 12 -0.15 129 0 0 -10 15 18 16 47 4.1 60 117 -68 - 9 12 48 -11 17 37 - 9 1 7 -11 29 14 -0.15 130 0 0 -10 28 6 16 46 39.7 61 117 -67 - 9 25 41 -11 30 21 - 9 14 1 -11 41 57 -0.15 131 0 0 -10 40 37 16 46 15.2 61 118 -66 - 9 38 15 -11 42 47 - 9 26 36 -11 54 23 -0.15 132 0 0 -10 52 49 16 45 50.5 62 118 -65 - 9 50 32 -11 54 56 - 9 38 53 -12 6 30 -0.15 133 0 0 -11 4 43 16 45 25.7 63 118 -65 -10 2 30 -12 6 46 - 9 50 52 -12 18 20 -0.15 134 0 0 -11 16 19 16 45 0.8 64 119 -64 -10 14 10 -12 18 18 -10 2 33 -12 29 51 -0.15 135 0 0 -11 27 37 16 44 35.8 65 119 -63 -10 25 31 -12 29 32 -10 13 55 -12 41 4 -0.15 136 0 0 -11 38 36 16 44 10.6 66 119 -62 -10 36 35 -12 40 28 -10 24 59 -12 51 59 -0.15 137 0 0 -11 49 17 16 43 45.3 67 120 -61 -10 47 19 -12 51 5 -10 35 44 -13 2 36 -0.15 138 0 0 -11 59 40 16 43 19.9 67 120 -60 -10 57 46 -13 1 24 -10 46 11 -13 12 55 -0.15 139 0 0 -12 9 45 16 42 54.4 68 121 -59 -11 7 54 -13 11 26 -10 56 20 -13 22 55 -0.14 140 0 0 -12 19 31 16 42 28.8 69 122 -58 -11 17 43 -13 21 8 -11 6 10 -13 32 37 -0.14 141 0 0 -12 28 58 16 42 3.1 70 122 -58 -11 27 14 -13 30 33 -11 15 42 -13 42 1 -0.14 142 0 0 -12 38 8 16 41 37.4 71 123 -57 -11 36 27 -13 39 39 -11 24 55 -13 51 7 -0.14 143 0 0 -12 46 59 16 41 11.5 71 124 -56 -11 45 21 -13 48 27 -11 33 49 -13 59 54 -0.14 144 0 0 -12 55 31 16 40 45.6 72 125 -55 -11 53 56 -13 56 56 -11 42 25 -14 8 23 -0.14 145 0 0 -13 3 45 16 40 19.6 73 126 -54 -12 2 13 -14 5 7 -11 50 43 -14 16 33 -0.14 146 0 0 -13 11 40 16 39 53.5 74 127 -53 -12 10 11 -14 13 0 -11 58 41 -14 24 26 -0.14 147 0 0 -13 19 17 16 39 27.4 75 128 -52 -12 17 51 -14 20 34 -12 6 21 -14 31 59 -0.14 148 0 0 -13 26 35 16 39 1.3 75 130 -52 -12 25 11 -14 27 50 -12 13 43 -14 39 14 -0.14 149 0 0 -13 33 35 16 38 35.0 76 131 -51 -12 32 14 -14 34 47 -12 20 45 -14 46 11 -0.14 150 0 0 -13 40 16 16 38 8.8 77 133 -50 -12 38 57 -14 41 26 -12 27 29 -14 52 50 -0.14 151 0 0 -13 46 39 16 37 42.5 77 135 -49 -12 45 22 -14 47 46 -12 33 54 -14 59 9 -0.14 152 0 0 -13 52 43 16 37 16.1 78 138 -48 -12 51 28 -14 53 48 -12 40 1 -15 5 11 -0.14 153 0 0 -13 58 28 16 36 49.8 79 141 -47 -12 57 15 -14 59 31 -12 45 49 -15 10 54 -0.14 154 0 0 -14 3 55 16 36 23.4 79 144 -47 -13 2 44 -15 4 56 -12 51 18 -15 16 18 -0.14 155 0 0 -14 9 3 16 35 56.9 80 147 -46 -13 7 54 -15 10 2 -12 56 28 -15 21 24 -0.14 156 0 0 -14 13 52 16 35 30.5 80 151 -45 -13 12 45 -15 14 50 -13 1 19 -15 26 11 -0.14 157 0 0 -14 18 23 16 35 4.1 81 155 -44 -13 17 17 -15 19 19 -13 5 52 -15 30 40 -0.14 158 0 0 -14 22 35 16 34 37.6 81 160 -43 -13 21 31 -15 23 29 -13 10 6 -15 34 51 -0.14 159 0 0 -14 26 28 16 34 11.1 82 165 -42 -13 25 26 -15 27 21 -13 14 1 -15 38 42 -0.14 160 0 0 -14 30 3 16 33 44.7 82 171 -41 -13 29 2 -15 30 55 -13 17 37 -15 42 15 -0.14 161 0 0 -14 33 19 16 33 18.2 82 177 -41 -13 32 19 -15 34 10 -13 20 55 -15 45 30 -0.14 162 0 0 -14 36 16 16 32 51.7 82 183 -40 -13 35 17 -15 37 6 -13 23 53 -15 48 26 -0.14 163 0 0 -14 38 55 16 32 25.3 82 188 -39 -13 37 57 -15 39 43 -13 26 33 -15 51 4 -0.14 164 0 0 -14 41 14 16 31 58.9 82 194 -38 -13 40 17 -15 42 2 -13 28 54 -15 53 22 -0.14 165 0 0 -14 43 15 16 31 32.5 82 200 -37 -13 42 19 -15 44 3 -13 30 55 -15 55 23 -0.14 166 0 0 -14 44 58 16 31 6.1 81 205 -36 -13 44 2 -15 45 44 -13 32 38 -15 57 4 -0.14 167 0 0 -14 46 21 16 30 39.7 81 210 -36 -13 45 26 -15 47 8 -13 34 3 -15 58 27 -0.14 168 0 0 -14 47 26 16 30 13.4 81 214 -35 -13 46 31 -15 48 12 -13 35 8 -15 59 32 -0.14 169 0 0 -14 48 12 16 29 47.1 80 218 -34 -13 47 17 -15 48 58 -13 35 54 -16 0 17 -0.14 170 0 0 -14 48 39 16 29 20.8 80 222 -33 -13 47 45 -15 49 25 -13 36 21 -16 0 44 -0.14 171 0 0 -14 48 48 16 28 54.6 79 225 -32 -13 47 53 -15 49 33 -13 36 30 -16 0 53 -0.14 172 0 0 -14 48 37 16 28 28.5 78 228 -31 -13 47 42 -15 49 23 -13 36 19 -16 0 42 -0.14 173 0 0 -14 48 8 16 28 2.4 78 230 -30 -13 47 13 -15 48 54 -13 35 50 -16 0 13 -0.14 174 0 0 -14 47 20 16 27 36.3 77 232 -30 -13 46 24 -15 48 6 -13 35 1 -15 59 26 -0.14 175 0 0 -14 46 13 16 27 10.3 76 234 -29 -13 45 17 -15 46 59 -13 33 53 -15 58 19 -0.14 176 0 0 -14 44 47 16 26 44.4 76 236 -28 -13 43 50 -15 45 34 -13 32 27 -15 56 54 -0.14 177 0 0 -14 43 2 16 26 18.5 75 237 -27 -13 42 5 -15 43 50 -13 30 41 -15 55 10 -0.14 178 0 0 -14 40 58 16 25 52.7 74 239 -26 -13 40 0 -15 41 47 -13 28 37 -15 53 7 -0.14 179 0 0 -14 38 36 16 25 27.0 73 240 -25 -13 37 37 -15 39 25 -13 26 13 -15 50 46 -0.14 180 0 0 -14 35 54 16 25 1.4 73 241 -25 -13 34 54 -15 36 45 -13 23 30 -15 48 5 -0.14 -179 0 0 -14 32 54 16 24 35.8 72 242 -24 -13 31 53 -15 33 46 -13 20 28 -15 45 6 -0.14 -178 0 0 -14 29 34 16 24 10.3 71 243 -23 -13 28 32 -15 30 27 -13 17 7 -15 41 48 -0.14 -177 0 0 -14 25 56 16 23 45.0 70 243 -22 -13 24 52 -15 26 50 -13 13 27 -15 38 12 -0.14 -176 0 0 -14 21 59 16 23 19.7 69 244 -21 -13 20 53 -15 22 55 -13 9 28 -15 34 16 -0.14 -175 0 0 -14 17 42 16 22 54.5 69 245 -20 -13 16 35 -15 18 40 -13 5 10 -15 30 2 -0.14 -174 0 0 -14 13 7 16 22 29.5 68 245 -19 -13 11 58 -15 14 6 -13 0 32 -15 25 28 -0.14 -173 0 0 -14 8 12 16 22 4.5 67 246 -19 -13 7 2 -15 9 13 -12 55 35 -15 20 36 -0.14 -172 0 0 -14 2 59 16 21 39.6 66 246 -18 -13 1 46 -15 4 2 -12 50 19 -15 15 25 -0.14 -171 0 0 -13 57 26 16 21 14.9 65 246 -17 -12 56 11 -14 58 31 -12 44 44 -15 9 55 -0.14 -170 0 0 -13 51 35 16 20 50.3 64 247 -16 -12 50 18 -14 52 42 -12 38 50 -15 4 6 -0.14 -169 0 0 -13 45 24 16 20 25.9 64 247 -15 -12 44 4 -14 46 34 -12 32 37 -14 57 58 -0.14 -168 0 0 -13 38 54 16 20 1.5 63 247 -14 -12 37 32 -14 40 6 -12 26 4 -14 51 31 -0.14 -167 0 0 -13 32 5 16 19 37.3 62 247 -13 -12 30 41 -14 33 20 -12 19 12 -14 44 45 -0.14 -166 0 0 -13 24 57 16 19 13.3 61 248 -13 -12 23 30 -14 26 14 -12 12 0 -14 37 40 -0.15 -165 0 0 -13 17 30 16 18 49.4 60 248 -12 -12 16 0 -14 18 50 -12 4 30 -14 30 16 -0.15 -164 0 0 -13 9 44 16 18 25.6 59 248 -11 -12 8 11 -14 11 7 -11 56 40 -14 22 33 -0.15 -163 0 0 -13 1 38 16 18 2.0 58 248 -10 -12 0 2 -14 3 4 -11 48 31 -14 14 31 -0.15 -162 0 0 -12 53 13 16 17 38.6 58 248 -9 -11 51 34 -13 54 42 -11 40 3 -14 6 10 -0.15 -161 0 0 -12 44 30 16 17 15.4 57 248 -8 -11 42 47 -13 46 2 -11 31 15 -13 57 30 -0.15 -160 0 0 -12 35 27 16 16 52.3 56 248 -7 -11 33 41 -13 37 2 -11 22 8 -13 48 31 -0.15 -159 0 0 -12 26 4 16 16 29.4 55 249 -7 -11 24 15 -13 27 43 -11 12 42 -13 39 13 -0.15 -158 0 0 -12 16 23 16 16 6.7 54 249 -6 -11 14 30 -13 18 6 -11 2 56 -13 29 36 -0.15 -157 0 0 -12 6 23 16 15 44.2 53 249 -5 -11 4 26 -13 8 9 -10 52 51 -13 19 39 -0.15 -156 0 0 -11 56 3 16 15 21.9 52 249 -4 -10 54 3 -12 57 53 -10 42 27 -13 9 24 -0.15 -155 0 0 -11 45 24 16 14 59.8 51 249 -3 -10 43 20 -12 47 18 -10 31 43 -12 58 50 -0.15 -154 0 0 -11 34 26 16 14 37.9 51 249 -2 -10 32 18 -12 36 23 -10 20 41 -12 47 56 -0.15 -153 0 0 -11 23 9 16 14 16.2 50 249 -1 -10 20 56 -12 25 10 -10 9 19 -12 36 44 -0.15 -152 0 0 -11 11 32 16 13 54.8 49 249 0 -10 9 16 -12 13 38 - 9 57 37 -12 25 12 -0.15 -151 0 0 -10 59 37 16 13 33.6 48 249 1 - 9 57 16 -12 1 47 - 9 45 37 -12 13 22 -0.15 -150 0 0 -10 47 22 16 13 12.6 47 249 1 - 9 44 57 -11 49 37 - 9 33 17 -12 1 12 -0.16 -149 0 0 -10 34 49 16 12 51.9 46 249 2 - 9 32 19 -11 37 7 - 9 20 38 -11 48 44 -0.16 -148 0 0 -10 21 56 16 12 31.4 45 249 3 - 9 19 22 -11 24 19 - 9 7 40 -11 35 56 -0.16 -147 0 0 -10 8 44 16 12 11.2 44 249 4 - 9 6 5 -11 11 12 - 8 54 22 -11 22 50 -0.16 -146 0 0 - 9 55 13 16 11 51.2 43 248 5 - 8 52 30 -10 57 46 - 8 40 46 -11 9 25 -0.16 -145 0 0 - 9 41 24 16 11 31.6 42 248 6 - 8 38 35 -10 44 1 - 8 26 50 -10 55 41 -0.16 -144 0 0 - 9 27 15 16 11 12.2 41 248 7 - 8 24 22 -10 29 57 - 8 12 36 -10 41 38 -0.16 -143 0 0 - 9 12 47 16 10 53.1 40 248 8 - 8 9 49 -10 15 34 - 7 58 3 -10 27 16 -0.16 -142 0 0 - 8 58 1 16 10 34.3 40 248 9 - 7 54 58 -10 0 53 - 7 43 10 -10 12 36 -0.16 -141 0 0 - 8 42 56 16 10 15.8 39 248 10 - 7 39 47 - 9 45 53 - 7 27 59 - 9 57 36 -0.16 -140 0 0 - 8 27 32 16 9 57.6 38 248 10 - 7 24 18 - 9 30 34 - 7 12 29 - 9 42 19 -0.16 -139 0 0 - 8 11 50 16 9 39.8 37 248 11 - 7 8 31 - 9 14 57 - 6 56 40 - 9 26 42 -0.16 -138 0 0 - 7 55 49 16 9 22.3 36 248 12 - 6 52 24 - 8 59 1 - 6 40 33 - 9 10 47 -0.16 -137 0 0 - 7 39 29 16 9 5.1 35 248 13 - 6 35 59 - 8 42 47 - 6 24 7 - 8 54 34 -0.17 -136 0 0 - 7 22 51 16 8 48.3 34 248 14 - 6 19 16 - 8 26 14 - 6 7 22 - 8 38 3 -0.17 -135 0 0 - 7 5 55 16 8 31.8 33 248 15 - 6 2 14 - 8 9 23 - 5 50 20 - 8 21 13 -0.17 -134 0 0 - 6 48 41 16 8 15.7 32 248 16 - 5 44 54 - 7 52 14 - 5 32 59 - 8 4 5 -0.17 -133 0 0 - 6 31 8 16 7 59.9 31 248 17 - 5 27 16 - 7 34 47 - 5 15 20 - 7 46 39 -0.17 -132 0 0 - 6 13 18 16 7 44.6 30 248 18 - 5 9 20 - 7 17 2 - 4 57 22 - 7 28 55 -0.17 -131 0 0 - 5 55 9 16 7 29.6 29 248 19 - 4 51 6 - 6 59 0 - 4 39 7 - 7 10 53 -0.17 -130 0 0 - 5 36 44 16 7 15.0 28 248 20 - 4 32 35 - 6 40 39 - 4 20 35 - 6 52 34 -0.17 -129 0 0 - 5 18 0 16 7 0.9 27 248 21 - 4 13 46 - 6 22 2 - 4 1 45 - 6 33 57 -0.17 -128 0 0 - 4 58 59 16 6 47.2 26 247 22 - 3 54 39 - 6 3 6 - 3 42 37 - 6 15 3 -0.17 -127 0 0 - 4 39 41 16 6 33.9 25 247 23 - 3 35 15 - 5 43 54 - 3 23 12 - 5 55 52 -0.17 -126 0 0 - 4 20 6 16 6 21.0 24 247 23 - 3 15 34 - 5 24 25 - 3 3 30 - 5 36 23 -0.17 -125 0 0 - 4 0 14 16 6 8.6 23 247 24 - 2 55 37 - 5 4 38 - 2 43 31 - 5 16 38 -0.17 -124 0 0 - 3 40 6 16 5 56.6 22 247 25 - 2 35 22 - 4 44 35 - 2 23 16 - 4 56 36 -0.17 -123 0 0 - 3 19 41 16 5 45.1 21 247 26 - 2 14 52 - 4 24 16 - 2 2 44 - 4 36 18 -0.18 -122 0 0 - 2 59 0 16 5 34.1 20 247 27 - 1 54 5 - 4 3 41 - 1 41 56 - 4 15 44 -0.18 -121 0 0 - 2 38 3 16 5 23.5 19 247 28 - 1 33 2 - 3 42 49 - 1 20 52 - 3 54 53 -0.18 -120 0 0 - 2 16 50 16 5 13.5 18 247 29 - 1 11 43 - 3 21 42 - 0 59 33 - 3 33 47 -0.18 -119 0 0 - 1 55 21 16 5 3.9 17 247 30 - 0 50 10 - 3 0 19 - 0 37 58 - 3 12 25 -0.18 -118 0 0 - 1 33 38 16 4 54.9 16 247 31 - 0 28 21 - 2 38 41 - 0 16 8 - 2 50 48 -0.18 -117 0 0 - 1 11 40 16 4 46.4 15 247 32 - 0 6 17 - 2 16 49 0 5 57 - 2 28 57 -0.18 -116 0 0 - 0 49 27 16 4 38.4 14 247 33 0 16 2 - 1 54 41 0 28 17 - 2 6 50 -0.18 -115 0 0 - 0 27 0 16 4 30.9 13 247 34 0 38 34 - 1 32 19 0 50 50 - 1 44 30 -0.18 -114 0 0 - 0 4 19 16 4 24.0 12 247 35 1 1 20 - 1 9 44 1 13 37 - 1 21 55 -0.18 -113 0 0 0 18 35 16 4 17.7 11 247 36 1 24 20 - 0 46 55 1 36 38 - 0 59 7 -0.18 -112 0 0 0 41 43 16 4 11.9 10 247 37 1 47 33 - 0 23 52 1 59 52 - 0 36 5 -0.18 -111 0 0 1 5 3 16 4 6.7 9 247 38 2 10 58 - 0 0 37 2 23 18 - 0 12 50 -0.18 -110 0 0 1 28 36 16 4 2.0 8 247 39 2 34 36 0 22 51 2 46 57 0 10 37 -0.18 -109 0 0 1 52 21 16 3 58.0 7 247 40 2 58 26 0 46 31 3 10 48 0 34 16 -0.18 -108 0 0 2 16 17 16 3 54.5 5 247 41 3 22 27 1 10 23 3 34 49 0 58 6 -0.18 -107 0 0 2 40 25 16 3 51.7 4 247 42 3 46 39 1 34 26 3 59 2 1 22 8 -0.18 -106 0 0 3 4 43 16 3 49.4 3 247 43 4 11 1 1 58 39 4 23 26 1 46 21 -0.18 -105 0 0 3 29 11 16 3 47.8 2 247 44 4 35 34 2 23 3 4 47 59 2 10 44 -0.17 -104 0 0 3 53 49 16 3 46.8 1 247 44 5 0 15 2 47 37 5 12 41 2 35 17 -0.16 -103 0 0 4 18 35 16 3 46.4 0 248 45 .. .. .. 3 12 20 .. .. .. 3 0 0 0.06 Uncertainty in time = +/- 7 secs Prediction of 2023 Feb 15.9 Data for the target star ------------------------ * name: UCAC4 339-069723 * constellation : Libra * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 14 54 04.2686 DE: -22 16 31.632 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 14 54 04.2687 DE: -22 16 31.632 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 12.0 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (7) Iris asteroid class: ShapeModel approx. diameter [km]: 222 approx. diameter ["]: 0.140 distance from Earth [AU]: 2.19610 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#125 date of fit: 2023 Feb 07 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): 0.016", 0.013", 98.151° remarks: * orbital elements for (7)Iris : Mean anomaly = 159.7386384167 deg Arg. of pericenter = 145.4163608713 deg Long. of node = 259.5034225442 deg Inclination = 5.5178816996 deg Eccentricity = 0.2296658060 Semimajor axis = 2.3869477802 AU Perihelion dist = 1.8387474942 AU Mag: H = 5.63, G = 0.15 Epoch of elements : MJD 60019.69020833 TDT (2023 Mar 16.6902) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#1252023Feb07,61.26,2023,3,16,16.546978,0.007738,0.136624,-2.044868,0.114137,-0.004351,0.001664,0.000001,0.000000 161.6410,-22.3702,-66.04,-1.66,False UCAC4 339-069723,14.90118572,-22.2754533,0.00,11.99,0.00,0.0,0,,14.92346901,-22.3701938,0.25,0.00,0,0,0 7,Iris,10.51,222.3,2.1961,0,0,-0.590,0.46,,15.2,0 0,159.5542,2023,3,16,145.4164,259.5034,5.5179,0.22967,2.38695,1.83875,5.62,5.0,0.15 1.093,0.0160,0.0130,98,0.0130,Known errors,-1.00,-1,-1,-1 20230316_069723,59990.87 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Feb 15, 20:49 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org