IOTA/IOTA-ES occultation update for (4052) Crovisier / UCAC4 313-101609 event on 2024 Sep 21, 02:58 UT Visible from Summary ------- On 2024 Sep 21 UT, the 13.198 km diameter asteroid (4052) Crovisier will occult a 11.7 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 6.48 mag to 18.22 mag (the magnitude of the asteroid) for at most 0.600 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: 98 * date and approx. time of event: 2024 Sep 21, 02:54 - 2024 Sep 21, 03:01 * geocentric midpoint of event [JD]: 2460574.62366713 * magnitude of target star: 11.74 * magnitude drop [mag]: 6.48 * estimated maximum duration [s]: 0.600 * Moon: 87 % sunlit, 144° distance * Sun: 78° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 18 * 1 sigma uncertainty interval [path widths]: +/- 0.38 * 1 sigma uncertainty interval [seconds]: +/- 1.5 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.014, +/- 0.002) * 1 sigma uncertainty ellipse (major, minor, PA): (0.014", 0.002", 89°) * approx speed of asteroid's shadow [km/s]: 21.9284 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 313-101609 by 4052 Crovisier on 2024 Sep 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 140 0 0 .. .. .... .. .. .. .. .. .. .. .. .. .. .. .. 31 50 56 .. .. .. .... 141 0 0 31 27 45 2 54 27.6 1 123 59 31 22 6 31 33 24 31 17 54 31 37 37 .... 142 0 0 30 54 57 2 54 27.8 2 124 59 30 49 20 31 0 35 30 45 9 31 4 47 -0.53 143 0 0 30 22 27 2 54 28.1 3 124 59 30 16 51 30 28 3 30 12 41 30 32 15 -0.65 144 0 0 29 50 15 2 54 28.5 4 125 59 29 44 41 29 55 50 29 40 32 30 0 0 -0.71 145 0 0 29 18 23 2 54 29.0 5 125 60 29 12 50 29 23 56 29 8 42 29 28 6 -0.74 146 0 0 28 46 52 2 54 29.7 6 126 60 28 41 20 28 52 24 28 37 13 28 56 32 -0.76 147 0 0 28 15 42 2 54 30.4 7 126 60 28 10 12 28 21 13 28 6 6 28 25 20 -0.78 148 0 0 27 44 55 2 54 31.3 8 127 60 27 39 26 27 50 24 27 35 21 27 54 30 -0.79 149 0 0 27 14 31 2 54 32.4 9 127 60 27 9 4 27 19 59 27 5 0 27 24 4 -0.80 150 0 0 26 44 32 2 54 33.5 10 128 60 26 39 6 26 49 59 26 35 3 26 54 3 -0.81 151 0 0 26 14 58 2 54 34.8 11 128 60 26 9 34 26 20 23 26 5 32 26 24 26 -0.82 152 0 0 25 45 51 2 54 36.2 12 129 60 25 40 27 25 51 14 25 36 26 25 55 16 -0.82 153 0 0 25 17 10 2 54 37.7 13 129 60 25 11 48 25 22 32 25 7 48 25 26 33 -0.83 154 0 0 24 48 57 2 54 39.3 14 130 59 24 43 37 24 54 18 24 39 38 24 58 18 -0.83 155 0 0 24 21 13 2 54 41.1 15 130 59 24 15 53 24 26 32 24 11 56 24 30 31 -0.84 156 0 0 23 53 58 2 54 42.9 16 131 59 23 48 40 23 59 16 23 44 43 24 3 14 -0.84 157 0 0 23 27 12 2 54 44.9 17 131 58 23 21 56 23 32 29 23 18 0 23 36 26 -0.84 158 0 0 23 0 57 2 54 47.0 18 132 58 22 55 42 23 6 13 22 51 47 23 10 9 -0.84 159 0 0 22 35 14 2 54 49.2 19 132 58 22 30 0 22 40 29 22 26 6 22 44 24 -0.85 160 0 0 22 10 2 2 54 51.5 20 133 57 22 4 49 22 15 15 22 0 56 22 19 10 -0.85 161 0 0 21 45 23 2 54 54.0 21 133 57 21 40 11 21 50 35 21 36 19 21 54 28 -0.85 162 0 0 21 21 16 2 54 56.5 22 134 56 21 16 6 21 26 27 21 12 14 21 30 19 -0.85 163 0 0 20 57 43 2 54 59.1 23 134 56 20 52 33 21 2 52 20 48 43 21 6 44 -0.85 164 0 0 20 34 43 2 55 1.9 24 135 55 20 29 35 20 39 52 20 25 46 20 43 43 -0.86 165 0 0 20 12 18 2 55 4.7 25 135 54 20 7 11 20 17 26 20 3 22 20 21 15 -0.86 166 0 0 19 50 28 2 55 7.7 26 136 54 19 45 22 19 55 34 19 41 34 19 59 23 -0.86 167 0 0 19 29 13 2 55 10.7 27 136 53 19 24 8 19 34 18 19 20 21 19 38 6 -0.86 168 0 0 19 8 33 2 55 13.8 28 137 52 19 3 29 19 13 37 18 59 43 19 17 24 -0.86 169 0 0 18 48 29 2 55 17.1 28 137 52 18 43 26 18 53 32 18 39 41 18 57 19 -0.86 170 0 0 18 29 2 2 55 20.4 29 138 51 18 24 0 18 34 4 18 20 15 18 37 50 -0.86 171 0 0 18 10 10 2 55 23.8 30 139 50 18 5 10 18 15 12 18 1 25 18 18 57 -0.87 172 0 0 17 51 56 2 55 27.3 31 139 49 17 46 56 17 56 57 17 43 13 18 0 41 -0.87 173 0 0 17 34 19 2 55 30.8 32 140 48 17 29 20 17 39 19 17 25 37 17 43 2 -0.87 174 0 0 17 17 20 2 55 34.5 33 141 48 17 12 21 17 22 18 17 8 39 17 26 1 -0.87 175 0 0 17 0 58 2 55 38.2 34 141 47 16 56 0 17 5 55 16 52 19 17 9 38 -0.87 176 0 0 16 45 13 2 55 42.1 34 142 46 16 40 17 16 50 10 16 36 36 16 53 52 -0.87 177 0 0 16 30 7 2 55 45.9 35 143 45 16 25 11 16 35 3 16 21 31 16 38 44 -0.87 178 0 0 16 15 39 2 55 49.9 36 143 44 16 10 44 16 20 35 16 7 4 16 24 15 -0.87 179 0 0 16 1 50 2 55 53.9 37 144 43 15 56 56 16 6 44 15 53 16 16 10 25 -0.87 -180 0 0 15 48 39 2 55 58.0 37 145 42 15 43 45 15 53 33 15 40 7 15 57 13 -0.87 -179 0 0 15 36 7 2 56 2.2 38 146 41 15 31 14 15 41 0 15 27 36 15 44 39 -0.87 -178 0 0 15 24 14 2 56 6.4 39 147 41 15 19 21 15 29 6 15 15 43 15 32 45 -0.88 -177 0 0 15 13 0 2 56 10.7 40 147 40 15 8 8 15 17 52 15 4 30 15 21 30 -0.88 -176 0 0 15 2 25 2 56 15.0 40 148 39 14 57 33 15 7 16 14 53 56 15 10 54 -0.88 -175 0 0 14 52 29 2 56 19.4 41 149 38 14 47 38 14 57 20 14 44 2 15 0 58 -0.88 -174 0 0 14 43 13 2 56 23.9 42 150 37 14 38 23 14 48 3 14 34 46 14 51 40 -0.88 -173 0 0 14 34 36 2 56 28.4 42 151 36 14 29 46 14 39 26 14 26 10 14 43 3 -0.88 -172 0 0 14 26 39 2 56 33.0 43 152 35 14 21 49 14 31 28 14 18 14 14 35 5 -0.88 -171 0 0 14 19 21 2 56 37.6 43 153 34 14 14 32 14 24 10 14 10 57 14 27 47 -0.88 -170 0 0 14 12 43 2 56 42.2 44 154 33 14 7 55 14 17 32 14 4 19 14 21 8 -0.88 -169 0 0 14 6 45 2 56 46.9 44 155 32 14 1 57 14 11 34 13 58 22 14 15 10 -0.88 -168 0 0 14 1 27 2 56 51.6 45 156 31 13 56 39 14 6 15 13 53 4 14 9 51 -0.88 -167 0 0 13 56 49 2 56 56.4 45 158 30 13 52 1 14 1 37 13 48 26 14 5 12 -0.88 -166 0 0 13 52 50 2 57 1.2 46 159 29 13 48 3 13 57 38 13 44 28 14 1 13 -0.88 -165 0 0 13 49 32 2 57 6.0 46 160 28 13 44 44 13 54 20 13 41 10 13 57 55 -0.88 -164 0 0 13 46 53 2 57 10.9 46 161 27 13 42 6 13 51 41 13 38 32 13 55 16 -0.88 -163 0 0 13 44 55 2 57 15.8 47 162 26 13 40 8 13 49 43 13 36 34 13 53 18 -0.88 -162 0 0 13 43 37 2 57 20.7 47 164 25 13 38 50 13 48 24 13 35 16 13 51 59 -0.88 -161 0 0 13 42 59 2 57 25.6 47 165 24 13 38 12 13 47 46 13 34 38 13 51 21 -0.88 -160 0 0 13 43 1 2 57 30.6 48 166 23 13 38 14 13 47 48 13 34 39 13 51 23 -0.89 -159 0 0 13 43 43 2 57 35.6 48 167 22 13 38 56 13 48 30 13 35 21 13 52 5 -0.89 -158 0 0 13 45 5 2 57 40.6 48 169 21 13 40 18 13 49 53 13 36 44 13 53 27 -0.89 -157 0 0 13 47 7 2 57 45.6 48 170 20 13 42 20 13 51 55 13 38 46 13 55 30 -0.89 -156 0 0 13 49 50 2 57 50.6 48 171 19 13 45 2 13 54 38 13 41 28 13 58 13 -0.89 -155 0 0 13 53 12 2 57 55.7 48 173 18 13 48 24 13 58 0 13 44 50 14 1 36 -0.89 -154 0 0 13 57 15 2 58 0.7 48 174 17 13 52 27 14 2 3 13 48 52 14 5 39 -0.89 -153 0 0 14 1 58 2 58 5.7 48 176 16 13 57 9 14 6 46 13 53 34 14 10 22 -0.89 -152 0 0 14 7 20 2 58 10.8 48 177 15 14 2 32 14 12 9 13 58 57 14 15 45 -0.89 -151 0 0 14 13 23 2 58 15.8 48 178 14 14 8 34 14 18 12 14 4 59 14 21 48 -0.89 -150 0 0 14 20 6 2 58 20.9 48 180 13 14 15 16 14 24 55 14 11 41 14 28 32 -0.89 -149 0 0 14 27 28 2 58 25.9 48 181 12 14 22 39 14 32 18 14 19 3 14 35 55 -0.89 -148 0 0 14 35 31 2 58 31.0 48 182 11 14 30 41 14 40 21 14 27 5 14 43 58 -0.89 -147 0 0 14 44 13 2 58 36.0 48 184 10 14 39 23 14 49 4 14 35 46 14 52 41 -0.89 -146 0 0 14 53 35 2 58 41.0 48 185 9 14 48 44 14 58 26 14 45 7 15 2 4 -0.89 -145 0 0 15 3 37 2 58 46.0 47 186 8 14 58 45 15 8 29 14 55 8 15 12 7 -0.89 -144 0 0 15 14 18 2 58 51.0 47 188 7 15 9 26 15 19 11 15 5 48 15 22 49 -0.89 -143 0 0 15 25 39 2 58 55.9 47 189 6 15 20 46 15 30 32 15 17 8 15 34 11 -0.89 -142 0 0 15 37 39 2 59 0.9 46 190 5 15 32 46 15 42 33 15 29 7 15 46 12 -0.89 -141 0 0 15 50 18 2 59 5.8 46 191 4 15 45 24 15 55 13 15 41 45 15 58 53 -0.89 -140 0 0 16 3 37 2 59 10.7 45 193 3 15 58 42 16 8 32 15 55 2 16 12 12 -0.89 -139 0 0 16 17 34 2 59 15.5 45 194 2 16 12 39 16 22 30 16 8 59 16 26 11 -0.89 -138 0 0 16 32 11 2 59 20.3 45 195 2 16 27 14 16 37 7 16 23 34 16 40 49 -0.89 -137 0 0 16 47 26 2 59 25.1 44 196 1 16 42 29 16 52 23 16 38 47 16 56 5 -0.89 -136 0 0 17 3 19 2 59 29.9 44 197 0 16 58 21 17 8 17 16 54 39 17 12 0 -0.89 -135 0 0 17 19 51 2 59 34.6 43 198 -1 17 14 52 17 24 50 17 11 9 17 28 33 -0.89 -134 0 0 17 37 0 2 59 39.2 42 199 -2 17 32 1 17 42 0 17 28 17 17 45 44 -0.89 -133 0 0 17 54 48 2 59 43.8 42 200 -3 17 49 47 17 59 49 17 46 3 18 3 34 -0.89 -132 0 0 18 13 13 2 59 48.4 41 201 -4 18 8 12 18 18 15 18 4 27 18 22 0 -0.89 -131 0 0 18 32 15 2 59 52.9 40 202 -5 18 27 13 18 37 18 18 23 27 18 41 4 -0.89 -130 0 0 18 51 55 2 59 57.4 40 203 -6 18 46 51 18 56 59 18 43 5 19 0 46 -0.89 -129 0 0 19 12 11 3 0 1.8 39 204 -7 19 7 6 19 17 16 19 3 19 19 21 4 -0.89 -128 0 0 19 33 3 3 0 6.1 38 205 -8 19 27 58 19 38 9 19 24 10 19 41 58 -0.89 -127 0 0 19 54 32 3 0 10.4 38 206 -9 19 49 25 19 59 39 19 45 36 20 3 28 -0.89 -126 0 0 20 16 36 3 0 14.6 37 207 -10 20 11 28 20 21 44 20 7 38 20 25 34 -0.89 -125 0 0 20 39 15 3 0 18.7 36 208 -11 20 34 6 20 44 24 20 30 15 20 48 15 -0.89 -124 0 0 21 2 29 3 0 22.8 35 209 -12 20 57 19 21 7 39 20 53 27 21 11 31 -0.89 -123 0 0 21 26 17 3 0 26.8 35 210 -13 21 21 6 21 31 29 21 17 14 21 35 22 -0.89 -122 0 0 21 50 39 3 0 30.7 34 210 -14 21 45 26 21 55 52 21 41 33 21 59 46 -0.89 -121 0 0 22 15 34 3 0 34.5 33 211 -14 22 10 21 22 20 49 22 6 27 22 24 43 -0.89 -120 0 0 22 41 2 3 0 38.3 32 212 -15 22 35 47 22 46 18 22 31 52 22 50 14 -0.89 -119 0 0 23 7 3 3 0 41.9 31 213 -16 23 1 46 23 12 19 22 57 51 23 16 16 -0.89 -118 0 0 23 33 34 3 0 45.5 30 213 -17 23 28 17 23 38 53 23 24 20 23 42 50 -0.89 -117 0 0 24 0 37 3 0 49.0 29 214 -18 23 55 18 24 5 57 23 51 21 24 9 55 -0.89 -116 0 0 24 28 10 3 0 52.3 28 215 -19 24 22 50 24 33 31 24 18 51 24 37 31 -0.89 -115 0 0 24 56 13 3 0 55.6 28 215 -20 24 50 51 25 1 35 24 46 51 25 5 36 -0.89 -114 0 0 25 24 44 3 0 58.8 27 216 -20 25 19 21 25 30 8 25 15 20 25 34 9 -0.89 -113 0 0 25 53 44 3 1 1.9 26 217 -21 25 48 19 25 59 8 25 44 17 26 3 11 -0.89 -112 0 0 26 23 10 3 1 4.9 25 217 -22 26 17 45 26 28 37 26 13 42 26 32 40 -0.89 -111 0 0 26 53 3 3 1 7.8 24 218 -23 26 47 36 26 58 31 26 43 32 27 2 36 -0.89 -110 0 0 27 23 22 3 1 10.5 23 219 -24 27 17 54 27 28 51 27 13 49 27 32 57 -0.89 -109 0 0 27 54 5 3 1 13.2 22 219 -24 27 48 35 27 59 36 27 44 29 28 3 43 -0.89 -108 0 0 28 25 12 3 1 15.8 21 220 -25 28 19 41 28 30 44 28 15 34 28 34 52 -0.89 -107 0 0 28 56 42 3 1 18.2 20 221 -26 28 51 9 29 2 15 28 47 1 29 6 25 -0.89 -106 0 0 29 28 34 3 1 20.5 19 221 -26 29 22 59 29 34 8 29 18 50 29 38 19 -0.89 -105 0 0 30 0 46 3 1 22.7 18 222 -27 29 55 10 30 6 22 29 51 0 30 10 33 -0.89 -104 0 0 30 33 18 3 1 24.8 17 222 -28 30 27 41 30 38 55 30 23 30 30 43 8 -0.89 -103 0 0 31 6 8 3 1 26.8 16 223 -28 31 0 30 31 11 47 30 56 18 31 16 0 -0.89 -102 0 0 31 39 16 3 1 28.6 15 224 -29 31 33 36 31 44 56 31 29 23 31 49 11 -0.89 -101 0 0 32 12 40 3 1 30.4 14 224 -30 32 6 59 32 18 22 32 2 45 32 22 37 -0.89 -100 0 0 32 46 19 3 1 32.0 13 225 -30 32 40 37 32 52 2 32 36 22 32 56 19 -0.89 - 99 0 0 33 20 12 3 1 33.5 12 225 -31 33 14 29 33 25 57 33 10 12 33 30 14 -0.89 - 98 0 0 33 54 18 3 1 34.8 11 226 -31 33 48 33 34 0 4 33 44 16 34 4 22 -0.89 - 97 0 0 34 28 35 3 1 36.1 10 226 -32 34 22 49 34 34 22 34 18 30 34 38 42 -0.90 - 96 0 0 35 3 2 3 1 37.2 9 227 -32 34 57 15 35 8 51 34 52 55 35 13 11 -0.90 - 95 0 0 35 37 38 3 1 38.2 8 228 -33 35 31 49 35 43 28 35 27 29 35 47 49 -0.90 - 94 0 0 36 12 22 3 1 39.1 7 228 -33 36 6 31 36 18 12 36 2 10 36 22 35 -0.90 - 93 0 0 36 47 11 3 1 39.9 6 229 -34 36 41 20 36 53 3 36 36 58 36 57 26 -0.91 - 92 0 0 37 22 6 3 1 40.5 5 229 -34 37 16 13 37 27 59 37 11 51 37 32 23 -0.91 - 91 0 0 37 57 4 3 1 41.1 4 230 -34 37 51 10 38 2 58 37 46 47 38 7 23 -0.92 - 90 0 0 38 32 4 3 1 41.5 3 231 -35 38 26 9 38 38 0 38 21 45 38 42 25 -0.93 - 89 0 0 39 7 5 3 1 41.8 2 231 -35 39 1 9 39 13 2 38 56 44 39 17 28 -0.96 - 88 0 0 39 42 6 3 1 42.0 1 232 -35 39 36 9 39 48 3 39 31 43 39 52 30 -1.02 - 87 0 0 40 17 5 3 1 42.0 0 233 -35 40 11 7 40 23 3 40 6 40 40 27 31 -1.49 Uncertainty in time = +/- 2 secs Prediction of 2023 Jul 15.6 Data for the target star ------------------------ * name: UCAC4 313-101609 * constellation : Ophiuchus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 16 59 53.8966 DE: -27 26 52.148 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 16 59 53.8965 DE: -27 26 52.148 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.300,0.200) * V mag [mag]: 11.7 * B mag [mag]: 12.4 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (4052) Crovisier asteroid class: approx. diameter [km]: 13 approx. diameter ["]: 0.006 distance from Earth [AU]: 3.26810 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#48 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", 0.002", 88.503° remarks: * orbital elements for (4052)Crovisier : Mean anomaly = 199.4283628306 deg Arg. of pericenter = 131.4571754667 deg Long. of node = 305.6787995054 deg Inclination = 9.1588672031 deg Eccentricity = 0.0677542573 Semimajor axis = 3.0254770036 AU Perihelion dist = 2.8204880563 AU Mag: H = 12.18, G = 0.15 Epoch of elements : MJD 60574.12366696 TDT (2024 Sep 21.1237) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#482023Apr24,0.60,2024,9,21,2.968011,-0.059772,0.660510,12.326974,1.111570,0.005617,-0.000666,0.000000,0.000000 -149.6470,-27.4859,133.74,0.55,False UCAC4 313-101609,16.99830463,-27.4478189,12.39,11.74,11.39,0.0,0,,17.02386439,-27.4858995,6.48,6.38,0,0,0 4052,Crovisier,18.22,13.198,3.2681,0,0,2.493,2.99,,1.2,0 0,199.4052,2024,9,21,131.4572,305.6788,9.1589,0.06775,3.02548,2.82049,12.18,5.0,0.15 1.373,0.0143,0.0019,89,0.0021,Known errors,1.29,0,-1,-1 20240921_101609,60140.58 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 13:48 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org