IOTA/IOTA-ES occultation update for (3428) Roberts / UCAC4 552-023273 event on 2024 Sep 03, 13:32 UT Visible from Summary ------- On 2024 Sep 03 UT, the 17.548 km diameter asteroid (3428) Roberts will occult a 11.0 mag star in the constellation Orion for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 6.75 mag to 17.74 mag (the magnitude of the asteroid) for at most 0.620 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 Sep 03, 13:30 - 2024 Sep 03, 13:35 * geocentric midpoint of event [JD]: 2460557.06456558 * magnitude of target star: 10.99 * magnitude drop [mag]: 6.75 * estimated maximum duration [s]: 0.620 * Moon: 0 % sunlit, 73° distance * Sun: 68° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 23 * 1 sigma uncertainty interval [path widths]: +/- 0.13 * 1 sigma uncertainty interval [seconds]: +/- 0.8 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.011, +/- 0.002) * 1 sigma uncertainty ellipse (major, minor, PA): (0.011", 0.001", 98°) * approx speed of asteroid's shadow [km/s]: 28.5053 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 552-023273 by 3428 Roberts on 2024 Sep 3 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 157 0 0 44 46 47 13 30 5.8 0 61 -38 44 39 44 44 53 52 44 37 57 44 55 39 .... 158 0 0 45 10 32 13 30 5.9 1 62 -38 45 3 29 45 17 36 45 1 42 45 19 23 -0.71 159 0 0 45 34 5 13 30 6.0 2 63 -37 45 27 2 45 41 8 45 25 15 45 42 55 -0.76 160 0 0 45 57 25 13 30 6.2 3 63 -37 45 50 22 46 4 28 45 48 36 46 6 15 -0.78 161 0 0 46 20 32 13 30 6.4 4 64 -36 46 13 29 46 27 35 46 11 43 46 29 22 -0.79 162 0 0 46 43 26 13 30 6.7 4 65 -36 46 36 24 46 50 29 46 34 37 46 52 15 -0.80 163 0 0 47 6 6 13 30 7.0 5 66 -36 46 59 4 47 13 8 46 57 18 47 14 55 -0.80 164 0 0 47 28 31 13 30 7.4 6 66 -35 47 21 30 47 35 33 47 19 44 47 37 20 -0.81 165 0 0 47 50 42 13 30 7.8 7 67 -35 47 43 41 47 57 43 47 41 55 47 59 30 -0.81 166 0 0 48 12 37 13 30 8.3 7 68 -34 48 5 37 48 19 38 48 3 51 48 21 25 -0.81 167 0 0 48 34 17 13 30 8.8 8 69 -34 48 27 17 48 41 18 48 25 32 48 43 4 -0.81 168 0 0 48 55 41 13 30 9.4 9 69 -33 48 48 42 49 2 42 48 46 56 49 4 27 -0.82 169 0 0 49 16 49 13 30 10.0 10 70 -33 49 9 50 49 23 49 49 8 5 49 25 35 -0.82 170 0 0 49 37 41 13 30 10.7 10 71 -32 49 30 42 49 44 40 49 28 57 49 46 25 -0.82 171 0 0 49 58 15 13 30 11.4 11 72 -32 49 51 17 50 5 13 49 49 32 50 6 59 -0.82 172 0 0 50 18 33 13 30 12.1 12 72 -31 50 11 36 50 25 30 50 9 51 50 27 16 -0.82 173 0 0 50 38 33 13 30 12.9 13 73 -31 50 31 37 50 45 30 50 29 52 50 47 15 -0.82 174 0 0 50 58 16 13 30 13.7 13 74 -30 50 51 20 51 5 12 50 49 36 51 6 57 -0.82 175 0 0 51 17 40 13 30 14.5 14 75 -30 51 10 46 51 24 36 51 9 1 51 26 21 -0.82 176 0 0 51 36 47 13 30 15.4 15 76 -29 51 29 53 51 43 42 51 28 9 51 45 27 -0.82 177 0 0 51 55 36 13 30 16.3 15 76 -29 51 48 43 52 2 30 51 46 59 52 4 15 -0.82 178 0 0 52 14 7 13 30 17.3 16 77 -28 52 7 15 52 21 0 52 5 31 52 22 44 -0.82 179 0 0 52 32 19 13 30 18.2 17 78 -28 52 25 28 52 39 11 52 23 44 52 40 55 -0.82 -180 0 0 52 50 13 13 30 19.3 17 79 -27 52 43 22 52 57 4 52 41 39 52 58 48 -0.82 -179 0 0 53 7 48 13 30 20.3 18 80 -26 53 0 58 53 14 39 52 59 15 53 16 22 -0.82 -178 0 0 53 25 5 13 30 21.3 19 81 -26 53 18 16 53 31 54 53 16 33 53 33 38 -0.82 -177 0 0 53 42 3 13 30 22.4 19 82 -25 53 35 15 53 48 51 53 33 32 53 50 34 -0.82 -176 0 0 53 58 42 13 30 23.6 20 82 -25 53 51 55 54 5 29 53 50 12 54 7 12 -0.82 -175 0 0 54 15 2 13 30 24.7 20 83 -24 54 8 16 54 21 48 54 6 34 54 23 31 -0.82 -174 0 0 54 31 3 13 30 25.8 21 84 -24 54 24 18 54 37 49 54 22 36 54 39 31 -0.82 -173 0 0 54 46 46 13 30 27.0 22 85 -23 54 40 1 54 53 30 54 38 20 54 55 12 -0.82 -172 0 0 55 2 9 13 30 28.2 22 86 -23 54 55 26 55 8 53 54 53 45 55 10 35 -0.82 -171 0 0 55 17 14 13 30 29.5 23 87 -22 55 10 32 55 23 57 55 8 50 55 25 38 -0.82 -170 0 0 55 32 0 13 30 30.7 23 88 -22 55 25 19 55 38 42 55 23 38 55 40 23 -0.82 -169 0 0 55 46 27 13 30 32.0 24 89 -21 55 39 47 55 53 8 55 38 6 55 54 49 -0.82 -168 0 0 56 0 35 13 30 33.2 25 90 -21 55 53 56 56 7 15 55 52 16 56 8 56 -0.82 -167 0 0 56 14 25 13 30 34.5 25 91 -20 56 7 47 56 21 4 56 6 6 56 22 44 -0.82 -166 0 0 56 27 56 13 30 35.8 26 92 -20 56 21 19 56 34 34 56 19 39 56 36 14 -0.82 -165 0 0 56 41 8 13 30 37.2 26 93 -19 56 34 32 56 47 45 56 32 52 56 49 25 -0.82 -164 0 0 56 54 2 13 30 38.5 27 94 -19 56 47 27 57 0 38 56 45 48 57 2 18 -0.82 -163 0 0 57 6 38 13 30 39.9 27 94 -18 57 0 4 57 13 13 56 58 24 57 14 52 -0.82 -162 0 0 57 18 55 13 30 41.2 28 95 -17 57 12 22 57 25 29 57 10 43 57 27 8 -0.82 -161 0 0 57 30 54 13 30 42.6 28 96 -17 57 24 22 57 37 27 57 22 43 57 39 6 -0.82 -160 0 0 57 42 35 13 30 44.0 29 97 -16 57 36 3 57 49 7 57 34 25 57 50 46 -0.82 -159 0 0 57 53 57 13 30 45.4 29 98 -16 57 47 27 58 0 29 57 45 49 58 2 7 -0.82 -158 0 0 58 5 2 13 30 46.8 30 99 -15 57 58 33 58 11 32 57 56 55 58 13 11 -0.82 -157 0 0 58 15 49 13 30 48.3 30 100 -15 58 9 20 58 22 18 58 7 43 58 23 56 -0.82 -156 0 0 58 26 18 13 30 49.7 31 101 -14 58 19 51 58 32 46 58 18 13 58 34 24 -0.82 -155 0 0 58 36 30 13 30 51.2 31 102 -14 58 30 3 58 42 57 58 28 26 58 44 35 -0.82 -154 0 0 58 46 24 13 30 52.6 32 103 -13 58 39 58 58 52 50 58 38 21 58 54 28 -0.82 -153 0 0 58 56 0 13 30 54.1 32 105 -13 58 49 35 59 2 26 58 47 58 59 4 3 -0.82 -152 0 0 59 5 19 13 30 55.6 33 106 -12 58 58 55 59 11 44 58 57 19 59 13 21 -0.82 -151 0 0 59 14 21 13 30 57.1 33 107 -12 59 7 58 59 20 45 59 6 22 59 22 22 -0.82 -150 0 0 59 23 6 13 30 58.5 34 108 -11 59 16 44 59 29 29 59 15 8 59 31 6 -0.82 -149 0 0 59 31 34 13 31 0.1 34 109 -11 59 25 13 59 37 56 59 23 37 59 39 33 -0.82 -148 0 0 59 39 45 13 31 1.6 34 110 -10 59 33 25 59 46 7 59 31 49 59 47 43 -0.82 -147 0 0 59 47 40 13 31 3.1 35 111 -10 59 41 20 59 54 0 59 39 44 59 55 36 -0.82 -146 0 0 59 55 17 13 31 4.6 35 112 -9 59 48 58 60 1 37 59 47 23 60 3 13 -0.82 -145 0 0 60 2 39 13 31 6.1 36 113 -9 59 56 20 60 8 58 59 54 45 60 10 33 -0.82 -144 0 0 60 9 43 13 31 7.7 36 114 -8 60 3 26 60 16 2 60 1 51 60 17 37 -0.82 -143 0 0 60 16 32 13 31 9.2 37 115 -8 60 10 15 60 22 49 60 8 40 60 24 25 -0.82 -142 0 0 60 23 4 13 31 10.8 37 116 -7 60 16 48 60 29 21 60 15 13 60 30 56 -0.82 -141 0 0 60 29 20 13 31 12.3 37 117 -7 60 23 4 60 35 36 60 21 30 60 37 11 -0.82 -140 0 0 60 35 20 13 31 13.9 38 119 -6 60 29 5 60 41 36 60 27 31 60 43 11 -0.82 -139 0 0 60 41 4 13 31 15.5 38 120 -6 60 34 50 60 47 19 60 33 16 60 48 54 -0.82 -138 0 0 60 46 33 13 31 17.1 39 121 -5 60 40 19 60 52 47 60 38 45 60 54 22 -0.82 -137 0 0 60 51 45 13 31 18.6 39 122 -5 60 45 32 60 57 59 60 43 58 60 59 34 -0.82 -136 0 0 60 56 42 13 31 20.2 39 123 -5 60 50 30 61 2 56 60 48 56 61 4 30 -0.82 -135 0 0 61 1 24 13 31 21.8 40 124 -4 60 55 12 61 7 37 60 53 38 61 9 11 -0.82 -134 0 0 61 5 50 13 31 23.4 40 125 -4 60 59 38 61 12 2 60 58 4 61 13 36 -0.82 -133 0 0 61 10 0 13 31 25.0 40 127 -3 61 3 49 61 16 12 61 2 15 61 17 46 -0.82 -132 0 0 61 13 56 13 31 26.7 41 128 -3 61 7 45 61 20 7 61 6 11 61 21 41 -0.82 -131 0 0 61 17 35 13 31 28.3 41 129 -2 61 11 25 61 23 47 61 9 52 61 25 20 -0.82 -130 0 0 61 21 0 13 31 29.9 41 130 -2 61 14 50 61 27 11 61 13 17 61 28 44 -0.82 -129 0 0 61 24 10 13 31 31.5 42 131 -1 61 18 0 61 30 20 61 16 27 61 31 53 -0.82 -128 0 0 61 27 4 13 31 33.2 42 133 -1 61 20 55 61 33 14 61 19 22 61 34 47 -0.82 -127 0 0 61 29 43 13 31 34.8 42 134 0 61 23 34 61 35 53 61 22 1 61 37 26 -0.82 -126 0 0 61 32 8 13 31 36.5 43 135 0 61 25 59 61 38 17 61 24 26 61 39 50 -0.82 -125 0 0 61 34 17 13 31 38.2 43 136 1 61 28 9 61 40 26 61 26 36 61 42 0 -0.82 -124 0 0 61 36 12 13 31 39.8 43 138 1 61 30 3 61 42 21 61 28 31 61 43 54 -0.82 -123 0 0 61 37 52 13 31 41.5 44 139 2 61 31 43 61 44 0 61 30 11 61 45 33 -0.82 -122 0 0 61 39 16 13 31 43.2 44 140 2 61 33 8 61 45 25 61 31 36 61 46 58 -0.82 -121 0 0 61 40 26 13 31 44.9 44 141 3 61 34 18 61 46 35 61 32 46 61 48 8 -0.82 -120 0 0 61 41 22 13 31 46.6 44 143 3 61 35 14 61 47 30 61 33 41 61 49 3 -0.82 -119 0 0 61 42 2 13 31 48.3 45 144 4 61 35 54 61 48 10 61 34 22 61 49 43 -0.82 -118 0 0 61 42 28 13 31 50.0 45 145 4 61 36 20 61 48 36 61 34 47 61 50 9 -0.82 -117 0 0 61 42 38 13 31 51.7 45 146 5 61 36 31 61 48 47 61 34 58 61 50 19 -0.83 -116 0 0 61 42 34 13 31 53.4 45 148 5 61 36 27 61 48 43 61 34 54 61 50 16 -0.83 -115 0 0 61 42 16 13 31 55.2 46 149 5 61 36 8 61 48 24 61 34 36 61 49 57 -0.83 -114 0 0 61 41 42 13 31 56.9 46 150 6 61 35 35 61 47 51 61 34 2 61 49 23 -0.83 -113 0 0 61 40 54 13 31 58.7 46 152 6 61 34 46 61 47 2 61 33 14 61 48 35 -0.83 -112 0 0 61 39 51 13 32 0.4 46 153 7 61 33 43 61 45 59 61 32 10 61 47 32 -0.83 -111 0 0 61 38 33 13 32 2.2 47 154 7 61 32 25 61 44 42 61 30 52 61 46 15 -0.83 -110 0 0 61 37 0 13 32 4.0 47 156 8 61 30 52 61 43 9 61 29 19 61 44 42 -0.83 -109 0 0 61 35 12 13 32 5.8 47 157 8 61 29 4 61 41 21 61 27 31 61 42 54 -0.83 -108 0 0 61 33 10 13 32 7.5 47 158 9 61 27 1 61 39 19 61 25 28 61 40 52 -0.83 -107 0 0 61 30 52 13 32 9.4 48 160 9 61 24 43 61 37 2 61 23 10 61 38 35 -0.83 -106 0 0 61 28 20 13 32 11.2 48 161 10 61 22 10 61 34 29 61 20 38 61 36 3 -0.83 -105 0 0 61 25 32 13 32 13.0 48 162 10 61 19 23 61 31 42 61 17 50 61 33 15 -0.83 -104 0 0 61 22 29 13 32 14.8 48 164 11 61 16 19 61 28 40 61 14 46 61 30 13 -0.83 -103 0 0 61 19 11 13 32 16.7 48 165 11 61 13 1 61 25 22 61 11 28 61 26 56 -0.83 -102 0 0 61 15 38 13 32 18.5 49 167 12 61 9 28 61 21 49 61 7 54 61 23 23 -0.83 -101 0 0 61 11 50 13 32 20.4 49 168 12 61 5 39 61 18 1 61 4 6 61 19 35 -0.83 -100 0 0 61 7 46 13 32 22.3 49 169 13 61 1 35 61 13 58 61 0 1 61 15 32 -0.83 - 99 0 0 61 3 27 13 32 24.2 49 171 13 60 57 15 61 9 39 60 55 41 61 11 13 -0.83 - 98 0 0 60 58 52 13 32 26.1 49 172 14 60 52 40 61 5 5 60 51 6 61 6 39 -0.83 - 97 0 0 60 54 2 13 32 28.0 49 174 14 60 47 49 61 0 15 60 46 15 61 1 49 -0.83 - 96 0 0 60 48 56 13 32 29.9 49 175 15 60 42 42 60 55 10 60 41 8 60 56 44 -0.83 - 95 0 0 60 43 34 13 32 31.8 50 177 15 60 37 20 60 49 49 60 35 46 60 51 23 -0.83 - 94 0 0 60 37 56 13 32 33.8 50 178 16 60 31 42 60 44 12 60 30 8 60 45 46 -0.83 - 93 0 0 60 32 3 13 32 35.7 50 180 16 60 25 48 60 38 19 60 24 13 60 39 53 -0.83 - 92 0 0 60 25 53 13 32 37.7 50 181 17 60 19 37 60 32 10 60 18 3 60 33 45 -0.83 - 91 0 0 60 19 27 13 32 39.7 50 183 17 60 13 11 60 25 44 60 11 36 60 27 20 -0.83 - 90 0 0 60 12 45 13 32 41.7 50 184 18 60 6 28 60 19 3 60 4 53 60 20 38 -0.83 - 89 0 0 60 5 47 13 32 43.7 50 186 18 59 59 29 60 12 5 59 57 54 60 13 41 -0.83 - 88 0 0 59 58 32 13 32 45.7 50 187 19 59 52 13 60 4 51 59 50 38 60 6 27 -0.83 - 87 0 0 59 51 0 13 32 47.7 50 189 19 59 44 41 59 57 20 59 43 6 59 58 56 -0.83 - 86 0 0 59 43 12 13 32 49.8 50 190 20 59 36 52 59 49 33 59 35 16 59 51 9 -0.83 - 85 0 0 59 35 7 13 32 51.8 50 192 20 59 28 46 59 41 29 59 27 10 59 43 5 -0.83 - 84 0 0 59 26 45 13 32 53.9 50 193 21 59 20 23 59 33 7 59 18 47 59 34 44 -0.83 - 83 0 0 59 18 6 13 32 56.0 50 195 21 59 11 44 59 24 29 59 10 7 59 26 6 -0.83 - 82 0 0 59 9 10 13 32 58.1 50 196 22 59 2 47 59 15 34 59 1 10 59 17 11 -0.83 - 81 0 0 58 59 56 13 33 0.2 50 198 22 58 53 32 59 6 21 58 51 55 59 7 58 -0.83 - 80 0 0 58 50 26 13 33 2.4 50 199 23 58 44 0 58 56 51 58 42 24 58 58 29 -0.83 - 79 0 0 58 40 37 13 33 4.5 50 201 24 58 34 11 58 47 4 58 32 34 58 48 41 -0.83 - 78 0 0 58 30 31 13 33 6.7 50 202 24 58 24 4 58 36 59 58 22 27 58 38 36 -0.83 - 77 0 0 58 20 7 13 33 8.8 50 204 25 58 13 39 58 26 36 58 12 2 58 28 13 -0.83 - 76 0 0 58 9 25 13 33 11.0 50 205 25 58 2 57 58 15 55 58 1 19 58 17 33 -0.83 - 75 0 0 57 58 26 13 33 13.2 50 207 26 57 51 56 58 4 56 57 50 18 58 6 34 -0.83 - 74 0 0 57 47 8 13 33 15.4 50 208 26 57 40 37 57 53 39 57 38 59 57 55 18 -0.83 - 73 0 0 57 35 32 13 33 17.7 50 210 27 57 29 0 57 42 4 57 27 21 57 43 43 -0.83 - 72 0 0 57 23 37 13 33 19.9 50 211 27 57 17 5 57 30 10 57 15 26 57 31 50 -0.83 - 71 0 0 57 11 24 13 33 22.2 50 213 28 57 4 51 57 17 59 57 3 12 57 19 38 -0.83 - 70 0 0 56 58 53 13 33 24.4 50 215 29 56 52 18 57 5 28 56 50 39 57 7 8 -0.83 - 69 0 0 56 46 3 13 33 26.7 49 216 29 56 39 27 56 52 39 56 37 48 56 54 19 -0.83 - 68 0 0 56 32 54 13 33 29.0 49 218 30 56 26 18 56 39 31 56 24 38 56 41 12 -0.83 - 67 0 0 56 19 27 13 33 31.4 49 219 30 56 12 49 56 26 5 56 11 9 56 27 45 -0.83 - 66 0 0 56 5 40 13 33 33.7 49 221 31 55 59 2 56 12 19 55 57 21 56 14 0 -0.83 - 65 0 0 55 51 35 13 33 36.0 49 222 31 55 44 55 55 58 15 55 43 15 55 59 56 -0.83 - 64 0 0 55 37 10 13 33 38.4 49 224 32 55 30 30 55 43 52 55 28 49 55 45 33 -0.83 - 63 0 0 55 22 27 13 33 40.7 48 225 33 55 15 45 55 29 9 55 14 4 55 30 51 -0.83 - 62 0 0 55 7 24 13 33 43.1 48 227 33 55 0 42 55 14 8 54 59 1 55 15 49 -0.83 - 61 0 0 54 52 3 13 33 45.5 48 228 34 54 45 19 54 58 47 54 43 38 55 0 29 -0.83 - 60 0 0 54 36 22 13 33 47.9 48 230 34 54 29 37 54 43 7 54 27 56 54 44 49 -0.83 - 59 0 0 54 20 22 13 33 50.3 47 231 35 54 13 36 54 27 8 54 11 54 54 28 50 -0.83 - 58 0 0 54 4 2 13 33 52.7 47 232 36 53 57 16 54 10 50 53 55 34 54 12 32 -0.83 - 57 0 0 53 47 24 13 33 55.2 47 234 36 53 40 37 53 54 12 53 38 54 53 55 55 -0.83 - 56 0 0 53 30 26 13 33 57.6 46 235 37 53 23 38 53 37 15 53 21 55 53 38 59 -0.83 - 55 0 0 53 13 10 13 34 0.1 46 237 38 53 6 20 53 20 0 53 4 37 53 21 43 -0.83 - 54 0 0 52 55 34 13 34 2.5 46 238 38 52 48 44 53 2 25 52 47 0 53 4 8 -0.83 - 53 0 0 52 37 39 13 34 5.0 45 239 39 52 30 48 52 44 31 52 29 5 52 46 15 -0.83 - 52 0 0 52 19 25 13 34 7.5 45 241 39 52 12 33 52 26 18 52 10 50 52 28 2 -0.83 - 51 0 0 52 0 53 13 34 9.9 45 242 40 51 54 0 52 7 46 51 52 16 52 9 31 -0.83 - 50 0 0 51 42 2 13 34 12.4 44 244 41 51 35 8 51 48 56 51 33 24 51 50 41 -0.83 - 49 0 0 51 22 52 13 34 14.9 44 245 41 51 15 58 51 29 47 51 14 13 51 31 32 -0.83 - 48 0 0 51 3 24 13 34 17.4 43 246 42 50 56 29 51 10 20 50 54 44 51 12 5 -0.83 - 47 0 0 50 43 38 13 34 19.9 43 247 42 50 36 42 50 50 35 50 34 57 50 52 20 -0.83 - 46 0 0 50 23 33 13 34 22.4 42 249 43 50 16 37 50 30 31 50 14 52 50 32 16 -0.83 - 45 0 0 50 3 11 13 34 24.8 42 250 44 49 56 14 50 10 9 49 54 29 50 11 55 -0.83 - 44 0 0 49 42 31 13 34 27.3 41 251 44 49 35 33 49 49 30 49 33 48 49 51 16 -0.83 - 43 0 0 49 21 34 13 34 29.8 41 253 45 49 14 36 49 28 34 49 12 50 49 30 20 -0.83 - 42 0 0 49 0 20 13 34 32.3 40 254 46 48 53 21 49 7 21 48 51 35 49 9 7 -0.83 - 41 0 0 48 38 50 13 34 34.7 40 255 46 48 31 50 48 45 50 48 30 4 48 47 37 -0.83 - 40 0 0 48 17 2 13 34 37.2 39 256 47 48 10 2 48 24 4 48 8 16 48 25 50 -0.84 - 39 0 0 47 54 59 13 34 39.7 39 257 47 47 47 58 48 2 1 47 46 12 48 3 48 -0.84 - 38 0 0 47 32 40 13 34 42.1 38 258 48 47 25 39 47 39 43 47 23 53 47 41 29 -0.84 - 37 0 0 47 10 6 13 34 44.5 37 260 49 47 3 4 47 17 9 47 1 18 47 18 56 -0.84 - 36 0 0 46 47 17 13 34 46.9 37 261 49 46 40 14 46 54 20 46 38 28 46 56 7 -0.84 - 35 0 0 46 24 13 13 34 49.3 36 262 50 46 17 11 46 31 17 46 15 24 46 33 4 -0.84 - 34 0 0 46 0 56 13 34 51.7 36 263 50 45 53 53 46 8 0 45 52 6 46 9 47 -0.84 - 33 0 0 45 37 25 13 34 54.1 35 264 51 45 30 21 45 44 29 45 28 35 45 46 16 -0.84 - 32 0 0 45 13 41 13 34 56.4 34 265 51 45 6 37 45 20 45 45 4 51 45 22 32 -0.84 - 31 0 0 44 49 44 13 34 58.7 34 266 52 44 42 40 44 56 49 44 40 54 44 58 36 -0.84 - 30 0 0 44 25 36 13 35 1.0 33 267 53 44 18 32 44 32 41 44 16 45 44 34 28 -0.84 - 29 0 0 44 1 16 13 35 3.3 32 268 53 43 54 12 44 8 21 43 52 25 44 10 8 -0.84 - 28 0 0 43 36 46 13 35 5.5 31 269 54 43 29 41 43 43 51 43 27 55 43 45 38 -0.84 - 27 0 0 43 12 5 13 35 7.7 31 270 54 43 5 1 43 19 10 43 3 14 43 20 57 -0.84 - 26 0 0 42 47 15 13 35 9.9 30 271 54 42 40 11 42 54 20 42 38 24 42 56 7 -0.84 - 25 0 0 42 22 16 13 35 12.0 29 272 55 42 15 12 42 29 21 42 13 25 42 31 8 -0.84 - 24 0 0 41 57 9 13 35 14.1 28 273 55 41 50 4 42 4 13 41 48 18 42 6 1 -0.84 - 23 0 0 41 31 54 13 35 16.2 28 273 56 41 24 50 41 38 58 41 23 3 41 40 46 -0.85 - 22 0 0 41 6 32 13 35 18.2 27 274 56 40 59 28 41 13 37 40 57 42 41 15 24 -0.85 - 21 0 0 40 41 4 13 35 20.2 26 275 57 40 34 1 40 48 9 40 32 14 40 49 56 -0.85 - 20 0 0 40 15 31 13 35 22.1 25 276 57 40 8 28 40 22 35 40 6 41 40 24 22 -0.85 - 19 0 0 39 49 53 13 35 24.0 25 277 57 39 42 50 39 56 57 39 41 4 39 58 44 -0.85 - 18 0 0 39 24 12 13 35 25.9 24 278 57 39 17 9 39 31 15 39 15 23 39 33 2 -0.85 - 17 0 0 38 58 27 13 35 27.6 23 278 58 38 51 24 39 5 30 38 49 38 39 7 16 -0.85 - 16 0 0 38 32 39 13 35 29.4 22 279 58 38 25 37 38 39 42 38 23 51 38 41 28 -0.85 - 15 0 0 38 6 50 13 35 31.1 21 280 58 37 59 49 38 13 52 37 58 3 38 15 39 -0.85 - 14 0 0 37 41 0 13 35 32.7 20 280 58 37 33 59 37 48 2 37 32 13 37 49 48 -0.85 - 13 0 0 37 15 10 13 35 34.2 19 281 58 37 8 10 37 22 11 37 6 24 37 23 57 -0.86 - 12 0 0 36 49 21 13 35 35.8 19 282 58 36 42 21 36 56 21 36 40 35 36 58 7 -0.86 - 11 0 0 36 23 33 13 35 37.2 18 283 59 36 16 34 36 30 33 36 14 48 36 32 19 -0.86 - 10 0 0 35 57 47 13 35 38.6 17 283 59 35 50 49 36 4 47 35 49 3 36 6 32 -0.86 - 9 0 0 35 32 5 13 35 39.9 16 284 59 35 25 7 35 39 3 35 23 22 35 40 49 -0.86 - 8 0 0 35 6 26 13 35 41.2 15 285 58 34 59 29 35 13 24 34 57 44 35 15 9 -0.87 - 7 0 0 34 40 52 13 35 42.3 14 285 58 34 33 55 34 47 49 34 32 10 34 49 34 -0.87 - 6 0 0 34 15 23 13 35 43.5 13 286 58 34 8 27 34 22 19 34 6 42 34 24 4 -0.87 - 5 0 0 33 50 0 13 35 44.5 12 286 58 33 43 5 33 56 56 33 41 21 33 58 41 -0.88 - 4 0 0 33 24 44 13 35 45.5 11 287 58 33 17 50 33 31 39 33 16 6 33 33 24 -0.88 - 3 0 0 32 59 36 13 35 46.4 10 288 58 32 52 43 33 6 30 32 50 59 33 8 15 -0.88 - 2 0 0 32 34 37 13 35 47.2 9 288 57 32 27 44 32 41 30 32 26 0 32 43 14 -0.89 - 1 0 0 32 9 46 13 35 48.0 9 289 57 32 2 55 32 16 39 32 1 11 32 18 23 -0.90 0 0 0 31 45 6 13 35 48.6 8 289 57 31 38 15 31 51 57 31 36 32 31 53 41 -0.90 1 0 0 31 20 36 13 35 49.2 7 290 56 31 13 46 31 27 27 31 12 3 31 29 10 -0.92 2 0 0 30 56 17 13 35 49.8 6 290 56 30 49 28 31 3 7 30 47 46 31 4 50 -0.93 3 0 0 30 32 11 13 35 50.2 5 291 56 30 25 23 30 39 0 30 23 40 30 40 43 -0.95 4 0 0 30 8 17 13 35 50.6 4 291 55 30 1 30 30 15 5 29 59 48 30 16 48 -0.98 5 0 0 29 44 37 13 35 50.9 3 292 55 29 37 50 29 51 24 29 36 8 29 53 6 -1.03 6 0 0 29 21 10 13 35 51.1 2 292 54 29 14 25 29 27 56 29 12 43 29 29 39 -1.13 7 0 0 28 57 58 13 35 51.2 1 293 54 28 51 14 29 4 43 28 49 32 29 6 26 -1.43 8 0 0 28 35 2 13 35 51.2 0 293 53 .. .. .. 28 41 46 .. .. .. 28 43 28 -81.00 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.5 Data for the target star ------------------------ * name: UCAC4 552-023273 * constellation : Orion * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 06 12 55.7284 DE: +20 19 00.207 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 06 12 55.7285 DE: +20 19 00.207 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 11.0 * B mag [mag]: 11.1 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (3428) Roberts asteroid class: approx. diameter [km]: 18 approx. diameter ["]: 0.008 distance from Earth [AU]: 2.88820 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#46 date of fit: 2023 Feb 10 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): 0.011", 0.001", 98.157° remarks: * orbital elements for (3428)Roberts : Mean anomaly = 277.3143533196 deg Arg. of pericenter = 303.3494308838 deg Long. of node = 230.7362157319 deg Inclination = 8.8781871811 deg Eccentricity = 0.1621630665 Semimajor axis = 2.6674767739 AU Perihelion dist = 2.2349105605 AU Mag: H = 12.28, G = 0.15 Epoch of elements : MJD 60556.56456479 TDT (2024 Sep 03.5646) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#462023Feb10,0.62,2024,9,3,13.549574,0.098111,0.626236,15.896540,-2.482479,-0.005235,0.000017,-0.000001,0.000000 -92.8250,20.3115,-23.45,7.23,False UCAC4 552-023273,6.21548009,20.3167241,11.08,10.99,10.94,0.0,0,,6.23977004,20.3115380,6.75,6.35,0,0,0 3428,Roberts,17.74,17.548,2.8882,0,0,3.441,-7.56,,1.6,0 0,277.1866,2024,9,3,303.3494,230.7362,8.8782,0.16216,2.66748,2.23491,12.28,5.0,0.15 1.126,0.0107,0.0010,98,0.0011,Known errors,1.04,0,-1,-1 20240903_023273,60140.54 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 12:55 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org