IOTA/IOTA-ES occultation update for (4327) Ries / TYC 6836-00894-1 event on 2024 Feb 08, 03:09 UT Visible from Summary ------- On 2024 Feb 08 UT, the 14.1872854919124 km diameter asteroid (4327) Ries will occult a 9.2 mag star in the constellation Ophiuchus for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 8.06 mag to 17.23 mag (the magnitude of the asteroid) for at most 0.400 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 Feb 08, 03:07 - 2024 Feb 08, 03:12 * geocentric midpoint of event [JD]: 2460348.63186383 * magnitude of target star: 9.17 * magnitude drop [mag]: 8.06 * estimated maximum duration [s]: 0.400 * Moon: 5 % sunlit, 28° distance * Sun: 52° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 16 * 1 sigma uncertainty interval [path widths]: +/- 0.28 * 1 sigma uncertainty interval [seconds]: +/- 0.8 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.013, +/- 0.004) * 1 sigma uncertainty ellipse (major, minor, PA): (0.014", 0.001", 106°) * approx speed of asteroid's shadow [km/s]: 37.8491 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 6836-00894-1 by 4327 Ries on 2024 Feb 8 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 - 11 0 0 - 7 8 49 3 7 13.2 1 117 -51 - 7 13 40 - 7 3 58 - 7 16 24 - 7 1 13 .... - 10 0 0 - 7 39 30 3 7 13.2 2 117 -50 - 7 44 22 - 7 34 38 - 7 47 7 - 7 31 54 0.33 - 9 0 0 - 8 10 29 3 7 13.4 3 116 -49 - 8 15 21 - 8 5 37 - 8 18 7 - 8 2 52 0.33 - 8 0 0 - 8 41 44 3 7 13.6 4 116 -48 - 8 46 37 - 8 36 52 - 8 49 23 - 8 34 6 0.33 - 7 0 0 - 9 13 16 3 7 13.9 5 116 -47 - 9 18 9 - 9 8 22 - 9 20 55 - 9 5 36 0.34 - 6 0 0 - 9 45 2 3 7 14.2 6 116 -45 - 9 49 56 - 9 40 8 - 9 52 43 - 9 37 22 0.34 - 5 0 0 -10 17 2 3 7 14.7 7 116 -44 -10 21 57 -10 12 8 -10 24 44 -10 9 21 0.34 - 4 0 0 -10 49 16 3 7 15.1 9 116 -43 -10 54 11 -10 44 21 -10 56 58 -10 41 34 0.34 - 3 0 0 -11 21 42 3 7 15.7 10 115 -42 -11 26 38 -11 16 46 -11 29 25 -11 13 59 0.34 - 2 0 0 -11 54 19 3 7 16.3 11 115 -41 -11 59 15 -11 49 23 -12 2 3 -11 46 35 0.34 - 1 0 0 -12 27 7 3 7 17.0 12 115 -40 -12 32 4 -12 22 10 -12 34 51 -12 19 22 0.34 - 0 0 0 -13 0 4 3 7 17.8 13 115 -39 -13 5 1 -12 55 7 -13 7 49 -12 52 19 0.34 1 0 0 -13 33 9 3 7 18.6 14 115 -38 -13 38 7 -13 28 11 -13 40 55 -13 25 23 0.34 2 0 0 -14 6 22 3 7 19.5 15 114 -37 -14 11 20 -14 1 24 -14 14 9 -13 58 35 0.34 3 0 0 -14 39 41 3 7 20.4 16 114 -35 -14 44 40 -14 34 43 -14 47 29 -14 31 54 0.34 4 0 0 -15 13 6 3 7 21.4 17 114 -34 -15 18 5 -15 8 7 -15 20 54 -15 5 18 0.34 5 0 0 -15 46 35 3 7 22.5 19 113 -33 -15 51 34 -15 41 36 -15 54 23 -15 38 47 0.34 6 0 0 -16 20 7 3 7 23.6 20 113 -32 -16 25 7 -16 15 8 -16 27 56 -16 12 18 0.34 7 0 0 -16 53 41 3 7 24.8 21 113 -31 -16 58 41 -16 48 42 -17 1 31 -16 45 52 0.34 8 0 0 -17 27 17 3 7 26.1 22 112 -30 -17 32 17 -17 22 17 -17 35 7 -17 19 28 0.34 9 0 0 -18 0 53 3 7 27.4 23 112 -29 -18 5 53 -17 55 53 -18 8 43 -17 53 3 0.34 10 0 0 -18 34 28 3 7 28.8 24 112 -28 -18 39 28 -18 29 27 -18 42 18 -18 26 38 0.34 11 0 0 -19 8 0 3 7 30.2 25 111 -27 -19 13 1 -19 3 0 -19 15 51 -19 0 10 0.34 12 0 0 -19 41 30 3 7 31.7 26 111 -25 -19 46 31 -19 36 30 -19 49 21 -19 33 40 0.34 13 0 0 -20 14 56 3 7 33.2 27 110 -24 -20 19 57 -20 9 55 -20 22 47 -20 7 5 0.34 14 0 0 -20 48 16 3 7 34.8 28 110 -23 -20 53 17 -20 43 16 -20 56 7 -20 40 26 0.34 15 0 0 -21 21 31 3 7 36.5 29 109 -22 -21 26 32 -21 16 30 -21 29 22 -21 13 40 0.34 16 0 0 -21 54 38 3 7 38.2 31 109 -21 -21 59 39 -21 49 37 -22 2 29 -21 46 48 0.34 17 0 0 -22 27 37 3 7 39.9 32 108 -20 -22 32 38 -22 22 37 -22 35 28 -22 19 47 0.34 18 0 0 -23 0 27 3 7 41.7 33 108 -19 -23 5 28 -22 55 27 -23 8 18 -22 52 37 0.34 19 0 0 -23 33 7 3 7 43.5 34 107 -18 -23 38 8 -23 28 7 -23 40 58 -23 25 17 0.34 20 0 0 -24 5 36 3 7 45.4 35 107 -17 -24 10 37 -24 0 36 -24 13 27 -23 57 46 0.34 21 0 0 -24 37 53 3 7 47.3 36 106 -16 -24 42 54 -24 32 53 -24 45 43 -24 30 4 0.34 22 0 0 -25 9 58 3 7 49.2 37 106 -15 -25 14 58 -25 4 58 -25 17 47 -25 2 8 0.34 23 0 0 -25 41 48 3 7 51.2 38 105 -14 -25 46 48 -25 36 48 -25 49 37 -25 33 59 0.34 24 0 0 -26 13 24 3 7 53.2 39 104 -13 -26 18 23 -26 8 25 -26 21 13 -26 5 36 0.34 25 0 0 -26 44 45 3 7 55.3 40 104 -12 -26 49 44 -26 39 46 -26 52 33 -26 36 57 0.34 26 0 0 -27 15 49 3 7 57.4 41 103 -10 -27 20 48 -27 10 50 -27 23 37 -27 8 1 0.34 27 0 0 -27 46 36 3 7 59.5 42 102 -9 -27 51 35 -27 41 38 -27 54 24 -27 38 50 0.34 28 0 0 -28 17 6 3 8 1.6 43 101 -8 -28 22 4 -28 12 8 -28 24 53 -28 9 20 0.34 29 0 0 -28 47 18 3 8 3.8 44 101 -7 -28 52 15 -28 42 20 -28 55 4 -28 39 32 0.34 30 0 0 -29 17 10 3 8 6.0 45 100 -6 -29 22 7 -29 12 13 -29 24 55 -29 9 25 0.34 31 0 0 -29 46 43 3 8 8.2 46 99 -5 -29 51 40 -29 41 47 -29 54 28 -29 38 59 0.34 32 0 0 -30 15 56 3 8 10.5 47 98 -4 -30 20 52 -30 11 0 -30 23 39 -30 8 12 0.34 33 0 0 -30 44 47 3 8 12.7 48 97 -3 -30 49 43 -30 39 52 -30 52 30 -30 37 5 0.34 34 0 0 -31 13 18 3 8 15.0 48 96 -2 -31 18 13 -31 8 23 -31 21 0 -31 5 36 0.34 35 0 0 -31 41 26 3 8 17.3 49 95 -2 -31 46 21 -31 36 32 -31 49 7 -31 33 45 0.34 36 0 0 -32 9 12 3 8 19.6 50 94 -1 -32 14 6 -32 4 18 -32 16 52 -32 1 32 0.34 37 0 0 -32 36 35 3 8 21.9 51 93 0 -32 41 29 -32 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68 50 22 -42 6 5 -41 56 57 -42 8 40 -41 54 22 0.34 64 0 0 -42 17 24 3 9 25.7 69 48 23 -42 21 57 -42 12 51 -42 24 32 -42 10 16 0.34 65 0 0 -42 32 51 3 9 28.0 69 45 24 -42 37 24 -42 28 19 -42 39 58 -42 25 45 0.34 66 0 0 -42 47 53 3 9 30.3 70 43 25 -42 52 25 -42 43 21 -42 54 59 -42 40 48 0.34 67 0 0 -43 2 30 3 9 32.5 70 40 25 -43 7 1 -42 57 58 -43 9 35 -42 55 25 0.34 68 0 0 -43 16 41 3 9 34.8 70 37 26 -43 21 12 -43 12 10 -43 23 45 -43 9 37 0.34 69 0 0 -43 30 27 3 9 37.1 70 35 27 -43 34 57 -43 25 57 -43 37 30 -43 23 24 0.34 70 0 0 -43 43 48 3 9 39.3 71 32 28 -43 48 17 -43 39 18 -43 50 49 -43 36 46 0.34 71 0 0 -43 56 44 3 9 41.5 71 29 28 -44 1 12 -43 52 15 -44 3 44 -43 49 43 0.34 72 0 0 -44 9 15 3 9 43.7 71 26 29 -44 13 43 -44 4 47 -44 16 14 -44 2 15 0.34 73 0 0 -44 21 21 3 9 46.0 71 23 30 -44 25 49 -44 16 54 -44 28 20 -44 14 22 0.34 74 0 0 -44 33 3 3 9 48.1 71 20 30 -44 37 30 -44 28 36 -44 40 1 -44 26 5 0.34 75 0 0 -44 44 20 3 9 50.3 71 17 31 -44 48 47 -44 39 54 -44 51 17 -44 37 24 0.34 76 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56 48 0.34 126 0 0 -45 55 42 3 11 28.3 49 282 58 -46 0 5 -45 51 20 -46 2 34 -45 48 51 0.34 127 0 0 -45 47 23 3 11 30.0 49 281 59 -45 51 46 -45 43 0 -45 54 15 -45 40 31 0.34 128 0 0 -45 38 41 3 11 31.7 48 280 59 -45 43 4 -45 34 17 -45 45 33 -45 31 48 0.34 129 0 0 -45 29 35 3 11 33.3 47 279 59 -45 33 59 -45 25 11 -45 36 28 -45 22 42 0.34 130 0 0 -45 20 5 3 11 35.0 47 278 59 -45 24 30 -45 15 41 -45 26 59 -45 13 11 0.34 131 0 0 -45 10 12 3 11 36.6 46 277 60 -45 14 37 -45 5 47 -45 17 7 -45 3 17 0.34 132 0 0 -44 59 55 3 11 38.3 45 276 60 -45 4 21 -44 55 29 -45 6 51 -44 52 59 0.34 133 0 0 -44 49 14 3 11 39.9 45 275 60 -44 53 40 -44 44 48 -44 56 11 -44 42 18 0.34 134 0 0 -44 38 9 3 11 41.5 44 274 61 -44 42 36 -44 33 42 -44 45 7 -44 31 12 0.34 135 0 0 -44 26 40 3 11 43.1 43 273 61 -44 31 7 -44 22 13 -44 33 38 -44 19 42 0.34 136 0 0 -44 14 46 3 11 44.6 42 272 61 -44 19 14 -44 10 19 -44 21 46 -44 7 47 0.34 137 0 0 -44 2 28 3 11 46.2 42 272 61 -44 6 57 -43 58 0 -44 9 29 -43 55 28 0.34 138 0 0 -43 49 46 3 11 47.8 41 271 61 -43 54 15 -43 45 17 -43 56 47 -43 42 45 0.34 139 0 0 -43 36 39 3 11 49.3 40 270 61 -43 41 9 -43 32 9 -43 43 41 -43 29 37 0.34 140 0 0 -43 23 7 3 11 50.8 40 269 62 -43 27 37 -43 18 37 -43 30 10 -43 16 4 0.34 141 0 0 -43 9 10 3 11 52.4 39 268 62 -43 13 41 -43 4 39 -43 16 15 -43 2 6 0.34 142 0 0 -42 54 48 3 11 53.9 38 267 62 -42 59 20 -42 50 17 -43 1 54 -42 47 43 0.34 143 0 0 -42 40 1 3 11 55.3 37 266 62 -42 44 34 -42 35 29 -42 47 8 -42 32 55 0.34 144 0 0 -42 24 49 3 11 56.8 37 265 62 -42 29 22 -42 20 16 -42 31 57 -42 17 42 0.34 145 0 0 -42 9 11 3 11 58.3 36 265 62 -42 13 45 -42 4 38 -42 16 20 -42 2 3 0.34 146 0 0 -41 53 8 3 11 59.7 35 264 62 -41 57 43 -41 48 34 -42 0 18 -41 45 59 0.34 147 0 0 -41 36 40 3 12 1.1 34 263 62 -41 41 15 -41 32 5 -41 43 51 -41 29 29 0.34 148 0 0 -41 19 46 3 12 2.5 34 262 62 -41 24 22 -41 15 10 -41 26 58 -41 12 34 0.35 149 0 0 -41 2 26 3 12 3.9 33 262 62 -41 7 3 -40 57 49 -41 9 39 -40 55 13 0.35 150 0 0 -40 44 40 3 12 5.2 32 261 62 -40 49 18 -40 40 3 -40 51 55 -40 37 26 0.35 151 0 0 -40 26 29 3 12 6.6 31 260 61 -40 31 7 -40 21 51 -40 33 45 -40 19 13 0.35 152 0 0 -40 7 52 3 12 7.9 30 259 61 -40 12 31 -40 3 13 -40 15 9 -40 0 35 0.35 153 0 0 -39 48 49 3 12 9.2 29 259 61 -39 53 28 -39 44 9 -39 56 7 -39 41 31 0.35 154 0 0 -39 29 20 3 12 10.5 29 258 61 -39 34 0 -39 24 39 -39 36 39 -39 22 1 0.35 155 0 0 -39 9 25 3 12 11.7 28 257 61 -39 14 6 -39 4 44 -39 16 45 -39 2 5 0.35 156 0 0 -38 49 4 3 12 12.9 27 256 60 -38 53 46 -38 44 22 -38 56 26 -38 41 43 0.35 157 0 0 -38 28 17 3 12 14.1 26 256 60 -38 33 0 -38 23 35 -38 35 40 -38 20 55 0.35 158 0 0 -38 7 5 3 12 15.3 25 255 60 -38 11 49 -38 2 22 -38 14 29 -37 59 41 0.35 159 0 0 -37 45 27 3 12 16.4 24 254 59 -37 50 11 -37 40 43 -37 52 52 -37 38 2 0.35 160 0 0 -37 23 23 3 12 17.6 24 254 59 -37 28 8 -37 18 38 -37 30 49 -37 15 57 0.35 161 0 0 -37 0 54 3 12 18.6 23 253 59 -37 5 39 -36 56 8 -37 8 21 -36 53 26 0.35 162 0 0 -36 37 59 3 12 19.7 22 252 58 -36 42 45 -36 33 12 -36 45 27 -36 30 30 0.35 163 0 0 -36 14 39 3 12 20.7 21 252 58 -36 19 26 -36 9 51 -36 22 8 -36 7 9 0.35 164 0 0 -35 50 53 3 12 21.7 20 251 57 -35 55 41 -35 46 5 -35 58 24 -35 43 23 0.35 165 0 0 -35 26 43 3 12 22.6 19 250 57 -35 31 32 -35 21 54 -35 34 15 -35 19 11 0.36 166 0 0 -35 2 8 3 12 23.6 18 250 56 -35 6 57 -34 57 19 -35 9 41 -34 54 35 0.36 167 0 0 -34 37 8 3 12 24.4 17 249 56 -34 41 58 -34 32 18 -34 44 42 -34 29 34 0.36 168 0 0 -34 11 44 3 12 25.3 16 249 55 -34 16 35 -34 6 54 -34 19 20 -34 4 9 0.36 169 0 0 -33 45 56 3 12 26.1 15 248 54 -33 50 48 -33 41 5 -33 53 33 -33 38 21 0.36 170 0 0 -33 19 45 3 12 26.8 15 247 54 -33 24 37 -33 14 53 -33 27 22 -33 12 8 0.36 171 0 0 -32 53 10 3 12 27.6 14 247 53 -32 58 3 -32 48 18 -33 0 48 -32 45 32 0.36 172 0 0 -32 26 12 3 12 28.2 13 246 53 -32 31 6 -32 21 19 -32 33 51 -32 18 34 0.37 173 0 0 -31 58 52 3 12 28.9 12 246 52 -32 3 46 -31 53 58 -32 6 32 -31 51 12 0.37 174 0 0 -31 31 9 3 12 29.5 11 245 51 -31 36 4 -31 26 15 -31 38 50 -31 23 29 0.37 175 0 0 -31 3 5 3 12 30.0 10 245 51 -31 8 0 -30 58 10 -31 10 47 -30 55 24 0.37 176 0 0 -30 34 40 3 12 30.5 9 244 50 -30 39 35 -30 29 45 -30 42 23 -30 26 58 0.38 177 0 0 -30 5 54 3 12 30.9 8 244 49 -30 10 50 -30 0 58 -30 13 37 -29 58 11 0.38 178 0 0 -29 36 48 3 12 31.3 7 243 48 -29 41 44 -29 31 51 -29 44 32 -29 29 4 0.39 179 0 0 -29 7 22 3 12 31.7 6 243 48 -29 12 19 -29 2 25 -29 15 7 -28 59 38 0.40 180 0 0 -28 37 37 3 12 32.0 5 242 47 -28 42 35 -28 32 40 -28 45 23 -28 29 52 0.41 -179 0 0 -28 7 35 3 12 32.2 4 242 46 -28 12 32 -28 2 37 -28 15 21 -27 59 49 0.43 -178 0 0 -27 37 14 3 12 32.4 3 241 45 -27 42 12 -27 32 16 -27 45 1 -27 29 28 0.47 -177 0 0 -27 6 37 3 12 32.5 2 241 44 -27 11 35 -27 1 38 -27 14 24 -26 58 50 0.55 -176 0 0 -26 35 43 3 12 32.6 1 240 43 -26 40 42 -26 30 44 -26 43 31 -26 27 56 0.87 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 13.2 Data for the target star ------------------------ * name: TYC 6836-00894-1 * constellation : Ophiuchus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 17 43 39.1962 DE: -26 36 41.635 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 17 43 39.1962 DE: -26 36 41.635 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 9.2 * B mag [mag]: 10.5 * Diameter [mas]: 0.40 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (4327) Ries asteroid class: approx. diameter [km]: 14 approx. diameter ["]: 0.006 distance from Earth [AU]: 3.04960 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#60 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): 0.014", 0.001", 106.461° remarks: * orbital elements for (4327)Ries : Mean anomaly = 301.4667326639 deg Arg. of pericenter = 276.8327515101 deg Long. of node = 55.7030121855 deg Inclination = 16.6656981017 deg Eccentricity = 0.2241475752 Semimajor axis = 2.7726667906 AU Perihelion dist = 2.1511802528 AU Mag: H = 11.84, G = 0.15 Epoch of elements : MJD 60348.13186370 TDT (2024 Feb 08.1319) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#602023Apr24,0.40,2024,2,8,3.164732,-0.059734,-0.312087,20.973671,-4.060286,-0.004633,-0.000080,-0.000001,0.000000 81.0768,-26.6227,136.06,-15.18,False TYC 6836-00894-1,17.72755445,-26.6115654,10.46,9.17,8.47,0.4,0,,17.75226233,-26.6227031,8.06,8.31,0,0,0 4327,Ries,17.23,15.072,3.0496,0,0,4.512,-11.71,,1.0,0 0,301.4386,2024,2,8,276.8328,55.7030,16.6657,0.22415,2.77267,2.15118,11.84,5.0,0.15 1.283,0.0140,0.0014,106,0.0019,Known errors,0.75,0,-1,-1 20240208_0894-1,60138.16 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 13, 03:48 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org