IOTA/IOTA-ES occultation update for (1624) Rabe / UCAC4 553-040973 event on 2024 Jan 21, 11:19 UT Visible from Summary ------- On 2024 Jan 21 UT, the 25.134 km diameter asteroid (1624) Rabe will occult a 11.3 mag star in the constellation Gemini for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 4.21 mag to 15.47 mag (the magnitude of the asteroid) for at most 2.040 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 Jan 21, 11:11 - 2024 Jan 21, 11:27 * geocentric midpoint of event [JD]: 2460330.97168563 * magnitude of target star: 11.28 * magnitude drop [mag]: 4.21 * estimated maximum duration [s]: 2.040 * Moon: 83 % sunlit, 42° distance * Sun: 173° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 27 * 1 sigma uncertainty interval [path widths]: +/- 0.16 * 1 sigma uncertainty interval [seconds]: +/- 3.5 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.030, +/- 0.004) * 1 sigma uncertainty ellipse (major, minor, PA): (0.030", 0.001", 98°) * approx speed of asteroid's shadow [km/s]: 12.2928 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 553-040973 by 1624 Rabe on 2024 Jan 21 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 81 0 0 33 7 57 11 27 13.8 1 66 5 33 15 59 32 59 56 33 18 34 32 57 22 .... 82 0 0 33 30 37 11 27 13.6 2 67 4 33 38 38 33 22 36 33 41 12 33 20 2 -0.38 83 0 0 33 52 58 11 27 13.2 3 67 3 34 0 58 33 44 58 34 3 33 33 42 24 -0.38 84 0 0 34 15 1 11 27 12.7 4 68 2 34 23 1 34 7 2 34 25 35 34 4 28 -0.38 85 0 0 34 36 46 11 27 12.1 4 68 1 34 44 44 34 28 48 34 47 19 34 26 14 -0.39 86 0 0 34 58 12 11 27 11.4 5 69 0 35 6 10 34 50 14 35 8 44 34 47 41 -0.39 87 0 0 35 19 19 11 27 10.5 6 69 -1 35 27 16 35 11 22 35 29 50 35 8 49 -0.39 88 0 0 35 40 7 11 27 9.5 7 70 -1 35 48 3 35 32 11 35 50 37 35 29 38 -0.39 89 0 0 36 0 36 11 27 8.3 8 71 -2 36 8 31 35 52 41 36 11 5 35 50 8 -0.39 90 0 0 36 20 45 11 27 7.1 9 71 -3 36 28 40 36 12 51 36 31 13 36 10 18 -0.39 91 0 0 36 40 35 11 27 5.7 10 72 -4 36 48 29 36 32 41 36 51 1 36 30 9 -0.39 92 0 0 37 0 5 11 27 4.2 11 72 -5 37 7 58 36 52 12 37 10 30 36 49 40 -0.39 93 0 0 37 19 15 11 27 2.6 11 73 -6 37 27 7 37 11 23 37 29 39 37 8 52 -0.39 94 0 0 37 38 5 11 27 0.9 12 74 -7 37 45 57 37 30 14 37 48 28 37 27 43 -0.39 95 0 0 37 56 35 11 26 59.0 13 74 -8 38 4 26 37 48 45 38 6 57 37 46 14 -0.39 96 0 0 38 14 45 11 26 57.1 14 75 -8 38 22 34 38 6 55 38 25 6 38 4 25 -0.39 97 0 0 38 32 34 11 26 55.1 15 76 -9 38 40 23 38 24 46 38 42 54 38 22 15 -0.39 98 0 0 38 50 3 11 26 53.0 16 76 -10 38 57 51 38 42 16 39 0 22 38 39 45 -0.39 99 0 0 39 7 12 11 26 50.7 16 77 -11 39 14 59 38 59 25 39 17 30 38 56 55 -0.39 100 0 0 39 24 1 11 26 48.4 17 77 -12 39 31 47 39 16 15 39 34 17 39 13 45 -0.39 101 0 0 39 40 29 11 26 46.0 18 78 -12 39 48 14 39 32 44 39 50 44 39 30 14 -0.39 102 0 0 39 56 36 11 26 43.5 19 79 -13 40 4 21 39 48 52 40 6 50 39 46 23 -0.39 103 0 0 40 12 23 11 26 40.9 20 79 -14 40 20 7 40 4 39 40 22 36 40 2 10 -0.40 104 0 0 40 27 49 11 26 38.2 20 80 -15 40 35 32 40 20 7 40 38 1 40 17 38 -0.40 105 0 0 40 42 55 11 26 35.5 21 81 -16 40 50 37 40 35 13 40 53 6 40 32 45 -0.40 106 0 0 40 57 40 11 26 32.6 22 82 -16 41 5 22 40 50 0 41 7 50 40 47 31 -0.40 107 0 0 41 12 5 11 26 29.7 23 82 -17 41 19 46 41 4 25 41 22 14 41 1 57 -0.40 108 0 0 41 26 10 11 26 26.7 24 83 -18 41 33 49 41 18 31 41 36 17 41 16 3 -0.40 109 0 0 41 39 54 11 26 23.6 24 84 -19 41 47 33 41 32 15 41 50 0 41 29 48 -0.40 110 0 0 41 53 17 11 26 20.5 25 84 -20 42 0 55 41 45 40 42 3 23 41 43 13 -0.40 111 0 0 42 6 21 11 26 17.2 26 85 -20 42 13 58 41 58 44 42 16 25 41 56 17 -0.40 112 0 0 42 19 4 11 26 14.0 27 86 -21 42 26 40 42 11 27 42 29 7 42 9 1 -0.40 113 0 0 42 31 26 11 26 10.6 27 87 -22 42 39 2 42 23 51 42 41 29 42 21 24 -0.40 114 0 0 42 43 29 11 26 7.2 28 87 -23 42 51 4 42 35 54 42 53 30 42 33 28 -0.40 115 0 0 42 55 11 11 26 3.7 29 88 -23 43 2 45 42 47 37 43 5 11 42 45 11 -0.40 116 0 0 43 6 33 11 26 0.1 29 89 -24 43 14 6 42 59 0 43 16 32 42 56 34 -0.40 117 0 0 43 17 35 11 25 56.5 30 90 -25 43 25 8 43 10 3 43 27 34 43 7 37 -0.40 118 0 0 43 28 17 11 25 52.8 31 90 -25 43 35 49 43 20 45 43 38 15 43 18 20 -0.40 119 0 0 43 38 39 11 25 49.1 32 91 -26 43 46 11 43 31 8 43 48 36 43 28 43 -0.40 120 0 0 43 48 42 11 25 45.3 32 92 -27 43 56 12 43 41 11 43 58 38 43 38 47 -0.40 121 0 0 43 58 24 11 25 41.4 33 93 -28 44 5 54 43 50 54 44 8 19 43 48 30 -0.40 122 0 0 44 7 47 11 25 37.5 34 94 -28 44 15 16 44 0 18 44 17 41 43 57 54 -0.40 123 0 0 44 16 50 11 25 33.6 34 94 -29 44 24 19 44 9 22 44 26 43 44 6 57 -0.40 124 0 0 44 25 34 11 25 29.6 35 95 -30 44 33 2 44 18 6 44 35 26 44 15 42 -0.40 125 0 0 44 33 58 11 25 25.5 36 96 -30 44 41 25 44 26 30 44 43 49 44 24 6 -0.40 126 0 0 44 42 2 11 25 21.4 36 97 -31 44 49 29 44 34 35 44 51 53 44 32 12 -0.40 127 0 0 44 49 47 11 25 17.2 37 98 -32 44 57 14 44 42 21 44 59 38 44 39 58 -0.40 128 0 0 44 57 13 11 25 13.0 38 99 -33 45 4 39 44 49 47 45 7 3 44 47 24 -0.40 129 0 0 45 4 19 11 25 8.7 38 99 -33 45 11 45 44 56 54 45 14 9 44 54 31 -0.40 130 0 0 45 11 7 11 25 4.4 39 100 -34 45 18 32 45 3 42 45 20 55 45 1 19 -0.40 131 0 0 45 17 35 11 25 0.0 40 101 -35 45 25 0 45 10 11 45 27 23 45 7 48 -0.40 132 0 0 45 23 44 11 24 55.6 40 102 -35 45 31 8 45 16 20 45 33 31 45 13 58 -0.40 133 0 0 45 29 34 11 24 51.2 41 103 -36 45 36 58 45 22 11 45 39 21 45 19 48 -0.40 134 0 0 45 35 5 11 24 46.7 42 104 -37 45 42 29 45 27 42 45 44 51 45 25 20 -0.40 135 0 0 45 40 18 11 24 42.1 42 105 -37 45 47 41 45 32 55 45 50 3 45 30 33 -0.40 136 0 0 45 45 11 11 24 37.5 43 106 -38 45 52 34 45 37 49 45 54 56 45 35 26 -0.40 137 0 0 45 49 45 11 24 32.9 44 107 -39 45 57 8 45 42 23 45 59 30 45 40 1 -0.40 138 0 0 45 54 1 11 24 28.2 44 108 -39 46 1 23 45 46 40 46 3 46 45 44 18 -0.40 139 0 0 45 57 58 11 24 23.5 45 109 -40 46 5 20 45 50 37 46 7 42 45 48 15 -0.40 140 0 0 46 1 37 11 24 18.7 46 110 -41 46 8 58 45 54 16 46 11 21 45 51 54 -0.40 141 0 0 46 4 57 11 24 13.9 46 111 -41 46 12 18 45 57 36 46 14 40 45 55 14 -0.40 142 0 0 46 7 58 11 24 9.1 47 112 -42 46 15 19 46 0 37 46 17 41 45 58 16 -0.40 143 0 0 46 10 41 11 24 4.2 47 113 -42 46 18 2 46 3 20 46 20 24 46 0 59 -0.40 144 0 0 46 13 5 11 23 59.3 48 114 -43 46 20 26 46 5 45 46 22 48 46 3 23 -0.41 145 0 0 46 15 11 11 23 54.3 49 115 -44 46 22 31 46 7 51 46 24 53 46 5 29 -0.41 146 0 0 46 16 58 11 23 49.3 49 116 -44 46 24 19 46 9 38 46 26 41 46 7 17 -0.41 147 0 0 46 18 27 11 23 44.3 50 117 -45 46 25 48 46 11 7 46 28 9 46 8 46 -0.41 148 0 0 46 19 38 11 23 39.2 50 118 -46 46 26 58 46 12 18 46 29 20 46 9 56 -0.41 149 0 0 46 20 30 11 23 34.0 51 119 -46 46 27 50 46 13 10 46 30 12 46 10 49 -0.41 150 0 0 46 21 4 11 23 28.9 52 120 -47 46 28 24 46 13 44 46 30 46 46 11 23 -0.41 151 0 0 46 21 19 11 23 23.7 52 121 -47 46 28 40 46 14 0 46 31 1 46 11 38 -0.41 152 0 0 46 21 17 11 23 18.4 53 123 -48 46 28 37 46 13 57 46 30 58 46 11 35 -0.41 153 0 0 46 20 56 11 23 13.1 53 124 -49 46 28 16 46 13 36 46 30 37 46 11 14 -0.41 154 0 0 46 20 16 11 23 7.8 54 125 -49 46 27 36 46 12 56 46 29 58 46 10 35 -0.41 155 0 0 46 19 18 11 23 2.4 54 126 -50 46 26 39 46 11 58 46 29 1 46 9 37 -0.41 156 0 0 46 18 2 11 22 57.0 55 128 -50 46 25 23 46 10 42 46 27 45 46 8 21 -0.41 157 0 0 46 16 28 11 22 51.6 55 129 -51 46 23 49 46 9 8 46 26 10 46 6 46 -0.41 158 0 0 46 14 35 11 22 46.1 56 130 -52 46 21 56 46 7 15 46 24 18 46 4 53 -0.41 159 0 0 46 12 24 11 22 40.6 57 131 -52 46 19 45 46 5 4 46 22 7 46 2 42 -0.41 160 0 0 46 9 55 11 22 35.0 57 133 -53 46 17 16 46 2 34 46 19 38 46 0 12 -0.41 161 0 0 46 7 7 11 22 29.4 58 134 -53 46 14 29 45 59 46 46 16 51 45 57 25 -0.41 162 0 0 46 4 1 11 22 23.8 58 136 -54 46 11 23 45 56 40 46 13 45 45 54 18 -0.41 163 0 0 46 0 37 11 22 18.1 59 137 -55 46 7 59 45 53 15 46 10 21 45 50 53 -0.41 164 0 0 45 56 54 11 22 12.4 59 139 -55 46 4 16 45 49 32 46 6 39 45 47 10 -0.41 165 0 0 45 52 53 11 22 6.6 60 140 -56 46 0 15 45 45 31 46 2 38 45 43 9 -0.41 166 0 0 45 48 33 11 22 0.8 60 142 -56 45 55 56 45 41 11 45 58 19 45 38 48 -0.41 167 0 0 45 43 55 11 21 55.0 61 143 -57 45 51 18 45 36 32 45 53 41 45 34 10 -0.41 168 0 0 45 38 58 11 21 49.1 61 145 -57 45 46 22 45 31 35 45 48 45 45 29 13 -0.41 169 0 0 45 33 43 11 21 43.2 61 146 -58 45 41 7 45 26 20 45 43 30 45 23 57 -0.41 170 0 0 45 28 9 11 21 37.3 62 148 -58 45 35 34 45 20 45 45 37 57 45 18 23 -0.41 171 0 0 45 22 17 11 21 31.3 62 150 -59 45 29 42 45 14 53 45 32 5 45 12 30 -0.41 172 0 0 45 16 6 11 21 25.2 63 152 -60 45 23 31 45 8 41 45 25 55 45 6 18 -0.41 173 0 0 45 9 36 11 21 19.1 63 153 -60 45 17 2 45 2 11 45 19 26 44 59 48 -0.41 174 0 0 45 2 48 11 21 13.0 64 155 -61 45 10 14 44 55 22 45 12 38 44 52 58 -0.41 175 0 0 44 55 41 11 21 6.9 64 157 -61 45 3 7 44 48 14 45 5 31 44 45 51 -0.41 176 0 0 44 48 15 11 21 0.7 64 159 -62 44 55 42 44 40 48 44 58 6 44 38 24 -0.41 177 0 0 44 40 30 11 20 54.5 65 161 -62 44 47 58 44 33 2 44 50 22 44 30 38 -0.41 178 0 0 44 32 26 11 20 48.2 65 163 -63 44 39 54 44 24 58 44 42 19 44 22 34 -0.41 179 0 0 44 24 3 11 20 41.9 65 165 -63 44 31 32 44 16 35 44 33 57 44 14 10 -0.41 -180 0 0 44 15 22 11 20 35.5 66 167 -64 44 22 51 44 7 52 44 25 16 44 5 28 -0.41 -179 0 0 44 6 21 11 20 29.2 66 169 -64 44 13 51 43 58 51 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30 2 57 29 46 48 30 5 33 29 44 13 -0.40 -128 0 0 29 30 38 11 14 31.1 48 268 -54 29 38 43 29 22 33 29 41 19 29 19 58 -0.40 -127 0 0 29 6 11 11 14 24.2 48 269 -54 29 14 16 28 58 6 29 16 52 28 55 30 -0.40 -126 0 0 28 41 32 11 14 17.5 47 270 -53 28 49 37 28 33 26 28 52 14 28 30 50 -0.40 -125 0 0 28 16 41 11 14 10.7 46 271 -52 28 24 47 28 8 35 28 27 23 28 5 59 -0.40 -124 0 0 27 51 39 11 14 4.1 45 272 -51 27 59 45 27 43 33 28 2 22 27 40 57 -0.40 -123 0 0 27 26 27 11 13 57.5 44 273 -50 27 34 33 27 18 21 27 37 10 27 15 45 -0.40 -122 0 0 27 1 5 11 13 51.0 43 273 -49 27 9 11 26 52 58 27 11 48 26 50 22 -0.40 -121 0 0 26 35 33 11 13 44.5 42 274 -49 26 43 39 26 27 26 26 46 16 26 24 50 -0.40 -120 0 0 26 9 52 11 13 38.2 42 275 -48 26 17 59 26 1 45 26 20 35 25 59 9 -0.40 -119 0 0 25 44 2 11 13 31.9 41 276 -47 25 52 10 25 35 56 25 54 46 25 33 19 -0.40 -118 0 0 25 18 5 11 13 25.7 40 276 -46 25 26 12 25 9 59 25 28 49 25 7 22 -0.40 -117 0 0 24 52 1 11 13 19.6 39 277 -45 25 0 8 24 43 54 25 2 45 24 41 18 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284 -33 19 14 44 18 58 34 19 17 21 18 55 58 -0.40 -103 0 0 18 39 58 11 12 6.5 25 284 -32 18 48 3 18 31 54 18 50 39 18 29 18 -0.41 -102 0 0 18 13 20 11 12 2.3 24 285 -31 18 21 25 18 5 16 18 24 1 18 2 41 -0.41 -101 0 0 17 46 45 11 11 58.2 23 285 -30 17 54 49 17 38 41 17 57 25 17 36 6 -0.41 -100 0 0 17 20 14 11 11 54.4 22 286 -29 17 28 17 17 12 11 17 30 53 17 9 35 -0.41 - 99 0 0 16 53 47 11 11 50.6 21 286 -28 17 1 50 16 45 44 17 4 26 16 43 9 -0.41 - 98 0 0 16 27 25 11 11 47.0 20 286 -27 16 35 28 16 19 23 16 38 3 16 16 48 -0.41 - 97 0 0 16 1 9 11 11 43.6 19 287 -25 16 9 12 15 53 8 16 11 47 15 50 33 -0.41 - 96 0 0 15 35 0 11 11 40.4 18 287 -24 15 43 2 15 26 59 15 45 37 15 24 24 -0.41 - 95 0 0 15 8 58 11 11 37.3 17 287 -23 15 16 59 15 0 57 15 19 34 14 58 23 -0.41 - 94 0 0 14 43 4 11 11 34.4 16 287 -22 14 51 4 14 35 4 14 53 39 14 32 29 -0.41 - 93 0 0 14 17 18 11 11 31.7 15 288 -21 14 25 18 14 9 19 14 27 53 14 6 45 -0.41 - 92 0 0 13 51 42 11 11 29.2 14 288 -20 13 59 41 13 43 43 14 2 15 13 41 9 -0.42 - 91 0 0 13 26 15 11 11 26.8 13 288 -19 13 34 14 13 18 17 13 36 48 13 15 43 -0.42 - 90 0 0 13 0 59 11 11 24.6 12 289 -18 13 8 57 12 53 2 13 11 31 12 50 28 -0.42 - 89 0 0 12 35 54 11 11 22.6 11 289 -17 12 43 52 12 27 57 12 46 25 12 25 24 -0.42 - 88 0 0 12 11 1 11 11 20.8 10 289 -16 12 18 58 12 3 5 12 21 31 12 0 32 -0.43 - 87 0 0 11 46 21 11 11 19.2 9 289 -15 11 54 17 11 38 25 11 56 50 11 35 52 -0.43 - 86 0 0 11 21 53 11 11 17.8 7 289 -14 11 29 48 11 13 58 11 32 21 11 11 26 -0.44 - 85 0 0 10 57 39 11 11 16.5 6 290 -13 11 5 34 10 49 45 11 8 6 10 47 13 -0.45 - 84 0 0 10 33 39 11 11 15.4 5 290 -12 10 41 33 10 25 46 10 44 6 10 23 14 -0.46 - 83 0 0 10 9 55 11 11 14.6 4 290 -11 10 17 48 10 2 2 10 20 20 9 59 30 -0.47 - 82 0 0 9 46 25 11 11 13.9 3 290 -10 9 54 18 9 38 33 9 56 50 9 36 2 -0.50 - 81 0 0 9 23 12 11 11 13.4 2 290 -9 9 31 3 9 15 21 9 33 35 9 12 49 -0.55 - 80 0 0 9 0 15 11 11 13.1 1 290 -8 9 8 6 8 52 25 9 10 37 8 49 53 -0.69 - 79 0 0 8 37 35 11 11 13.0 0 291 -7 8 45 25 8 29 46 8 47 56 8 27 15 -4.04 Uncertainty in time = +/- 4 secs Prediction of 2023 Jul 12.0 Data for the target star ------------------------ * name: UCAC4 553-040973 * constellation : Gemini * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 07 42 38.3523 DE: +20 26 57.125 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 07 42 38.3523 DE: +20 26 57.125 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 11.3 * B mag [mag]: 11.5 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (1624) Rabe asteroid class: approx. diameter [km]: 25 approx. diameter ["]: 0.017 distance from Earth [AU]: 1.98490 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#49 date of fit: 2023 Apr 27 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): 0.030", 0.001", 97.952° remarks: * orbital elements for (1624)Rabe : Mean anomaly = 321.7191838551 deg Arg. of pericenter = 28.3675088007 deg Long. of node = 133.3646451381 deg Inclination = 1.9969286601 deg Eccentricity = 0.0939339830 Semimajor axis = 3.1873745450 AU Perihelion dist = 2.8879717586 AU Mag: H = 11.37, G = 0.15 Epoch of elements : MJD 60330.47168591 TDT (2024 Jan 21.4717) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#492023Apr27,2.04,2024,1,21,11.320455,0.084559,0.366536,-6.760935,1.559174,0.000719,-0.000037,0.000001,0.000000 -174.1182,20.3921,12.98,-19.96,False UCAC4 553-040973,7.71065341,20.4492015,11.47,11.28,11.18,0.0,0,,7.73452974,20.3921067,4.21,3.88,0,0,1 1624,Rabe,15.47,25.134,1.9849,0,0,-2.130,6.90,,1.8,0 0,321.6375,2024,1,21,28.3675,133.3646,1.9969,0.09393,3.18737,2.88797,11.37,5.0,0.15 1.161,0.0300,0.0010,98,0.0028,Known errors,1.07,0,-1,-1 20240121_040973,60137.02 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 12, 00:34 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org