IOTA/IOTA-ES occultation update for (7456) Doressoundiram / UCAC4 489-058518 event on 2024 May 19, 23:46 UT Visible from Summary ------- On 2024 May 19 UT, the 8.76965744385822 km diameter asteroid (7456) Doressoundiram will occult a 9.6 mag star in the constellation Bootes for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 7.43 mag to 17.03 mag (the magnitude of the asteroid) for at most 0.840 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: 66 * date and approx. time of event: 2024 May 19, 23:38 - 2024 May 19, 23:55 * geocentric midpoint of event [JD]: 2460450.49072859 * magnitude of target star: 9.60 * magnitude drop [mag]: 7.43 * estimated maximum duration [s]: 0.840 * Moon: 87 % sunlit, 31° distance * Sun: 149° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 11 * 1 sigma uncertainty interval [path widths]: +/- 0.91 * 1 sigma uncertainty interval [seconds]: +/- 2.3 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.022, +/- 0.007) * 1 sigma uncertainty ellipse (major, minor, PA): (0.023", 0.003", 106°) * approx speed of asteroid's shadow [km/s]: 10.6655 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 489-058518 by 7456 Doressoundiram on 2024 May 19 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 -108 0 0 33 47 48 23 54 52.7 1 81 26 33 50 46 33 44 49 33 56 13 33 39 24 .... -107 0 0 33 55 46 23 54 52.5 1 82 25 33 58 45 33 52 47 34 4 11 33 47 22 -0.52 -106 0 0 34 3 44 23 54 52.2 2 82 24 34 6 43 34 0 45 34 12 9 33 55 20 -0.58 -105 0 0 34 11 42 23 54 51.7 3 83 23 34 14 40 34 8 43 34 20 7 34 3 18 -0.60 -104 0 0 34 19 39 23 54 51.0 4 84 23 34 22 38 34 16 41 34 28 4 34 11 15 -0.62 -103 0 0 34 27 36 23 54 50.2 5 84 22 34 30 35 34 24 37 34 36 1 34 19 12 -0.63 -102 0 0 34 35 32 23 54 49.3 6 85 21 34 38 31 34 32 34 34 43 57 34 27 8 -0.64 -101 0 0 34 43 28 23 54 48.2 6 85 20 34 46 26 34 40 29 34 51 53 34 35 3 -0.64 -100 0 0 34 51 22 23 54 47.0 7 86 20 34 54 21 34 48 23 34 59 47 34 42 58 -0.65 - 99 0 0 34 59 15 23 54 45.6 8 86 19 35 2 14 34 56 17 35 7 40 34 50 51 -0.65 - 98 0 0 35 7 7 23 54 44.1 9 87 18 35 10 6 35 4 9 35 15 32 34 58 43 -0.65 - 97 0 0 35 14 58 23 54 42.4 10 88 17 35 17 57 35 11 59 35 23 23 35 6 34 -0.65 - 96 0 0 35 22 47 23 54 40.6 10 88 16 35 25 46 35 19 48 35 31 12 35 14 23 -0.66 - 95 0 0 35 30 34 23 54 38.6 11 89 16 35 33 33 35 27 36 35 38 59 35 22 10 -0.66 - 94 0 0 35 38 20 23 54 36.5 12 89 15 35 41 18 35 35 21 35 46 45 35 29 56 -0.66 - 93 0 0 35 46 3 23 54 34.3 13 90 14 35 49 2 35 43 5 35 54 28 35 37 39 -0.66 - 92 0 0 35 53 44 23 54 31.9 14 91 13 35 56 43 35 50 46 36 2 9 35 45 20 -0.66 - 91 0 0 36 1 24 23 54 29.4 14 91 13 36 4 22 35 58 25 36 9 49 35 53 0 -0.66 - 90 0 0 36 9 1 23 54 26.8 15 92 12 36 11 59 36 6 2 36 17 25 36 0 37 -0.66 - 89 0 0 36 16 35 23 54 24.0 16 92 11 36 19 34 36 13 36 36 25 0 36 8 11 -0.66 - 88 0 0 36 24 7 23 54 21.1 17 93 11 36 27 5 36 21 8 36 32 31 36 15 43 -0.66 - 87 0 0 36 31 36 23 54 18.1 18 94 10 36 34 34 36 28 37 36 40 0 36 23 12 -0.66 - 86 0 0 36 39 2 23 54 14.9 18 94 9 36 42 1 36 36 4 36 47 27 36 30 38 -0.66 - 85 0 0 36 46 25 23 54 11.7 19 95 8 36 49 24 36 43 27 36 54 50 36 38 2 -0.67 - 84 0 0 36 53 45 23 54 8.3 20 96 8 36 56 44 36 50 47 37 2 10 36 45 22 -0.67 - 83 0 0 37 1 2 23 54 4.7 21 96 7 37 4 1 36 58 4 37 9 27 36 52 39 -0.67 - 82 0 0 37 8 16 23 54 1.1 22 97 6 37 11 15 37 5 18 37 16 40 36 59 52 -0.67 - 81 0 0 37 15 26 23 53 57.4 22 98 6 37 18 25 37 12 28 37 23 51 37 7 3 -0.67 - 80 0 0 37 22 33 23 53 53.5 23 98 5 37 25 31 37 19 35 37 30 57 37 14 10 -0.67 - 79 0 0 37 29 36 23 53 49.5 24 99 4 37 32 35 37 26 38 37 38 0 37 21 13 -0.67 - 78 0 0 37 36 35 23 53 45.4 25 100 4 37 39 34 37 33 37 37 45 0 37 28 12 -0.67 - 77 0 0 37 43 31 23 53 41.2 25 100 3 37 46 29 37 40 33 37 51 55 37 35 8 -0.67 - 76 0 0 37 50 22 23 53 36.9 26 101 2 37 53 21 37 47 24 37 58 47 37 41 59 -0.67 - 75 0 0 37 57 10 23 53 32.5 27 102 2 38 0 8 37 54 12 38 5 34 37 48 47 -0.67 - 74 0 0 38 3 53 23 53 28.0 28 103 1 38 6 52 38 0 55 38 12 17 37 55 30 -0.67 - 73 0 0 38 10 32 23 53 23.4 28 103 0 38 13 31 38 7 34 38 18 56 38 2 9 -0.67 - 72 0 0 38 17 7 23 53 18.6 29 104 0 38 20 5 38 14 9 38 25 31 38 8 44 -0.67 - 71 0 0 38 23 38 23 53 13.8 30 105 -1 38 26 36 38 20 39 38 32 1 38 15 15 -0.67 - 70 0 0 38 30 3 23 53 8.9 30 106 -2 38 33 2 38 27 5 38 38 27 38 21 41 -0.67 - 69 0 0 38 36 24 23 53 3.9 31 107 -2 38 39 23 38 33 26 38 44 48 38 28 2 -0.67 - 68 0 0 38 42 41 23 52 58.8 32 107 -3 38 45 39 38 39 43 38 51 4 38 34 18 -0.67 - 67 0 0 38 48 53 23 52 53.6 32 108 -4 38 51 51 38 45 55 38 57 16 38 40 30 -0.67 - 66 0 0 38 55 0 23 52 48.3 33 109 -4 38 57 58 38 52 2 39 3 23 38 46 37 -0.67 - 65 0 0 39 1 2 23 52 43.0 34 110 -5 39 4 0 38 58 4 39 9 25 38 52 39 -0.67 - 64 0 0 39 6 58 23 52 37.5 35 111 -5 39 9 56 39 4 0 39 15 22 38 58 36 -0.67 - 63 0 0 39 12 50 23 52 32.0 35 112 -6 39 15 48 39 9 52 39 21 13 39 4 28 -0.67 - 62 0 0 39 18 37 23 52 26.4 36 112 -7 39 21 35 39 15 39 39 27 0 39 10 15 -0.67 - 61 0 0 39 24 18 23 52 20.7 37 113 -7 39 27 16 39 21 20 39 32 41 39 15 56 -0.67 - 60 0 0 39 29 54 23 52 14.9 37 114 -8 39 32 52 39 26 57 39 38 17 39 21 32 -0.67 - 59 0 0 39 35 25 23 52 9.1 38 115 -8 39 38 23 39 32 27 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-28 41 52 55 41 47 1 41 58 18 41 41 39 -0.69 5 0 0 41 48 28 23 44 33.5 53 207 -28 41 51 25 41 45 31 41 56 48 41 40 9 -0.69 6 0 0 41 46 52 23 44 26.2 53 209 -28 41 49 49 41 43 55 41 55 12 41 38 32 -0.69 7 0 0 41 45 8 23 44 18.9 52 210 -28 41 48 5 41 42 11 41 53 28 41 36 48 -0.69 8 0 0 41 43 17 23 44 11.7 52 212 -28 41 46 14 41 40 20 41 51 37 41 34 58 -0.69 9 0 0 41 41 20 23 44 4.5 52 213 -28 41 44 17 41 38 23 41 49 40 41 33 0 -0.69 10 0 0 41 39 16 23 43 57.3 51 214 -28 41 42 13 41 36 19 41 47 36 41 30 56 -0.69 11 0 0 41 37 4 23 43 50.1 51 216 -28 41 40 2 41 34 8 41 45 25 41 28 45 -0.69 12 0 0 41 34 47 23 43 43.0 50 217 -28 41 37 44 41 31 50 41 43 7 41 26 27 -0.69 13 0 0 41 32 22 23 43 35.9 50 219 -28 41 35 19 41 29 25 41 40 42 41 24 2 -0.69 14 0 0 41 29 51 23 43 28.9 50 220 -28 41 32 48 41 26 54 41 38 11 41 21 31 -0.69 15 0 0 41 27 13 23 43 21.9 49 221 -28 41 30 10 41 24 16 41 35 33 41 18 53 -0.69 16 0 0 41 24 28 23 43 14.9 49 223 -28 41 27 25 41 21 31 41 32 48 41 16 8 -0.69 17 0 0 41 21 36 23 43 8.0 48 224 -27 41 24 34 41 18 39 41 29 57 41 13 17 -0.69 18 0 0 41 18 38 23 43 1.1 48 225 -27 41 21 36 41 15 41 41 26 59 41 10 19 -0.69 19 0 0 41 15 34 23 42 54.3 47 226 -27 41 18 31 41 12 37 41 23 55 41 7 14 -0.69 20 0 0 41 12 23 23 42 47.5 47 228 -27 41 15 20 41 9 25 41 20 43 41 4 3 -0.69 21 0 0 41 9 5 23 42 40.7 46 229 -27 41 12 2 41 6 7 41 17 25 41 0 44 -0.69 22 0 0 41 5 40 23 42 34.0 46 230 -27 41 8 38 41 2 43 41 14 1 40 57 20 -0.69 23 0 0 41 2 9 23 42 27.4 45 231 -26 41 5 7 40 59 12 41 10 30 40 53 49 -0.69 24 0 0 40 58 32 23 42 20.8 45 232 -26 41 1 29 40 55 35 41 6 53 40 50 12 -0.69 25 0 0 40 54 48 23 42 14.3 44 233 -26 40 57 46 40 51 51 41 3 10 40 46 28 -0.69 26 0 0 40 50 58 23 42 7.8 44 234 -26 40 53 56 40 48 1 40 59 20 40 42 38 -0.69 27 0 0 40 47 2 23 42 1.4 43 236 -26 40 49 59 40 44 5 40 55 23 40 38 41 -0.69 28 0 0 40 42 59 23 41 55.0 42 237 -25 40 45 57 40 40 2 40 51 21 40 34 39 -0.69 29 0 0 40 38 50 23 41 48.7 42 238 -25 40 41 48 40 35 53 40 47 12 40 30 30 -0.69 30 0 0 40 34 35 23 41 42.4 41 239 -25 40 37 33 40 31 38 40 42 57 40 26 14 -0.69 31 0 0 40 30 14 23 41 36.3 41 240 -24 40 33 11 40 27 16 40 38 35 40 21 53 -0.69 32 0 0 40 25 46 23 41 30.1 40 241 -24 40 28 44 40 22 49 40 34 8 40 17 25 -0.69 33 0 0 40 21 13 23 41 24.1 39 242 -24 40 24 10 40 18 15 40 29 35 40 12 52 -0.69 34 0 0 40 16 33 23 41 18.1 39 243 -24 40 19 31 40 13 36 40 24 55 40 8 12 -0.69 35 0 0 40 11 48 23 41 12.2 38 244 -23 40 14 45 40 8 50 40 20 10 40 3 27 -0.69 36 0 0 40 6 56 23 41 6.4 38 245 -23 40 9 54 40 3 59 40 15 18 39 58 35 -0.69 37 0 0 40 1 59 23 41 0.6 37 245 -23 40 4 57 39 59 1 40 10 21 39 53 38 -0.69 38 0 0 39 56 56 23 40 54.9 36 246 -22 39 59 54 39 53 58 40 5 18 39 48 35 -0.69 39 0 0 39 51 47 23 40 49.3 36 247 -22 39 54 45 39 48 50 40 0 10 39 43 26 -0.69 40 0 0 39 46 33 23 40 43.8 35 248 -22 39 49 31 39 43 35 39 54 55 39 38 11 -0.69 41 0 0 39 41 13 23 40 38.3 34 249 -21 39 44 10 39 38 15 39 49 35 39 32 51 -0.69 42 0 0 39 35 47 23 40 33.0 34 250 -21 39 38 45 39 32 49 39 44 10 39 27 25 -0.69 43 0 0 39 30 16 23 40 27.7 33 251 -20 39 33 14 39 27 18 39 38 39 39 21 54 -0.69 44 0 0 39 24 39 23 40 22.5 32 252 -20 39 27 37 39 21 41 39 33 2 39 16 17 -0.69 45 0 0 39 18 57 23 40 17.4 32 252 -20 39 21 55 39 16 0 39 27 20 39 10 35 -0.69 46 0 0 39 13 10 23 40 12.4 31 253 -19 39 16 8 39 10 12 39 21 33 39 4 48 -0.69 47 0 0 39 7 18 23 40 7.5 30 254 -19 39 10 16 39 4 20 39 15 41 38 58 56 -0.69 48 0 0 39 1 20 23 40 2.6 29 255 -18 39 4 18 38 58 22 39 9 44 38 52 58 -0.69 49 0 0 38 55 18 23 39 57.9 29 256 -18 38 58 16 38 52 20 39 3 41 38 46 56 -0.69 50 0 0 38 49 11 23 39 53.2 28 256 -17 38 52 9 38 46 13 38 57 34 38 40 48 -0.69 51 0 0 38 42 58 23 39 48.7 27 257 -17 38 45 56 38 40 0 38 51 22 38 34 36 -0.69 52 0 0 38 36 41 23 39 44.3 27 258 -16 38 39 39 38 33 43 38 45 4 38 28 18 -0.69 53 0 0 38 30 19 23 39 39.9 26 259 -16 38 33 17 38 27 21 38 38 42 38 21 56 -0.69 54 0 0 38 23 52 23 39 35.7 25 259 -15 38 26 50 38 20 54 38 32 16 38 15 29 -0.69 55 0 0 38 17 21 23 39 31.6 24 260 -15 38 20 19 38 14 23 38 25 45 38 8 58 -0.69 56 0 0 38 10 45 23 39 27.5 24 261 -14 38 13 43 38 7 47 38 19 9 38 2 22 -0.69 57 0 0 38 4 5 23 39 23.6 23 261 -14 38 7 3 38 1 7 38 12 29 37 55 42 -0.69 58 0 0 37 57 21 23 39 19.8 22 262 -13 38 0 19 37 54 22 38 5 45 37 48 57 -0.69 59 0 0 37 50 32 23 39 16.1 21 263 -13 37 53 30 37 47 34 37 58 56 37 42 9 -0.69 60 0 0 37 43 39 23 39 12.6 21 263 -12 37 46 38 37 40 41 37 52 4 37 35 16 -0.69 61 0 0 37 36 43 23 39 9.1 20 264 -12 37 39 41 37 33 45 37 45 7 37 28 20 -0.69 62 0 0 37 29 42 23 39 5.8 19 265 -11 37 32 41 37 26 44 37 38 7 37 21 19 -0.69 63 0 0 37 22 38 23 39 2.5 18 265 -11 37 25 37 37 19 40 37 31 2 37 14 15 -0.69 64 0 0 37 15 30 23 38 59.4 18 266 -10 37 18 29 37 12 32 37 23 54 37 7 7 -0.69 65 0 0 37 8 19 23 38 56.5 17 267 -9 37 11 17 37 5 20 37 16 43 36 59 55 -0.69 66 0 0 37 1 4 23 38 53.6 16 267 -9 37 4 2 36 58 5 37 9 28 36 52 40 -0.70 67 0 0 36 53 45 23 38 50.9 15 268 -8 36 56 44 36 50 47 37 2 10 36 45 21 -0.70 68 0 0 36 46 24 23 38 48.3 14 269 -8 36 49 22 36 43 25 36 54 48 36 38 0 -0.70 69 0 0 36 38 59 23 38 45.8 14 269 -7 36 41 57 36 36 0 36 47 24 36 30 35 -0.70 70 0 0 36 31 31 23 38 43.5 13 270 -6 36 34 30 36 28 32 36 39 56 36 23 7 -0.70 71 0 0 36 24 0 23 38 41.3 12 271 -6 36 26 59 36 21 2 36 32 25 36 15 36 -0.70 72 0 0 36 16 27 23 38 39.2 11 271 -5 36 19 25 36 13 28 36 24 52 36 8 3 -0.71 73 0 0 36 8 51 23 38 37.3 10 272 -4 36 11 49 36 5 52 36 17 16 36 0 27 -0.71 74 0 0 36 1 12 23 38 35.5 10 272 -4 36 4 11 35 58 14 36 9 37 35 52 48 -0.71 75 0 0 35 53 32 23 38 33.8 9 273 -3 35 56 30 35 50 33 36 1 56 35 45 7 -0.71 76 0 0 35 45 48 23 38 32.3 8 274 -2 35 48 47 35 42 50 35 54 13 35 37 24 -0.72 77 0 0 35 38 3 23 38 31.0 7 274 -2 35 41 2 35 35 4 35 46 28 35 29 39 -0.72 78 0 0 35 30 16 23 38 29.7 6 275 -1 35 33 15 35 27 17 35 38 41 35 21 52 -0.73 79 0 0 35 22 27 23 38 28.7 6 275 0 35 25 26 35 19 28 35 30 52 35 14 3 -0.74 80 0 0 35 14 36 23 38 27.7 5 276 0 35 17 35 35 11 38 35 23 1 35 6 12 -0.75 81 0 0 35 6 44 23 38 26.9 4 276 1 35 9 43 35 3 45 35 15 9 34 58 20 -0.76 82 0 0 34 58 50 23 38 26.3 3 277 2 35 1 49 34 55 52 35 7 15 34 50 26 -0.79 83 0 0 34 50 55 23 38 25.8 2 278 2 34 53 54 34 47 57 34 59 20 34 42 31 -0.83 84 0 0 34 42 59 23 38 25.5 1 278 3 34 45 58 34 40 0 34 51 24 34 34 35 -0.93 85 0 0 34 35 2 23 38 25.3 1 279 4 34 38 1 34 32 3 34 43 27 34 26 38 -1.30 Uncertainty in time = +/- 2 secs Prediction of 2023 Jul 14.3 Data for the target star ------------------------ * name: UCAC4 489-058518 * constellation : Bootes * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 14 51 48.2799 DE: +07 36 08.875 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 14 51 48.2799 DE: +07 36 08.875 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 9.6 * B mag [mag]: 10.5 * Diameter [mas]: 0.20 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (7456) Doressoundiram asteroid class: approx. diameter [km]: 9 approx. diameter ["]: 0.008 distance from Earth [AU]: 1.56040 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 25 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): 0.023", 0.003", 106.2° remarks: * orbital elements for (7456)Doressoundiram : Mean anomaly = 296.9643216736 deg Arg. of pericenter = 203.8841406363 deg Long. of node = 119.9007320455 deg Inclination = 14.7900187756 deg Eccentricity = 0.2997499927 Semimajor axis = 2.6213154845 AU Perihelion dist = 1.8355761873 AU Mag: H = 13.36, G = 0.15 Epoch of elements : MJD 60449.99072854 TDT (2024 May 19.9907) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#492023Apr25,0.84,2024,5,19,23.777486,-0.003857,0.562385,-6.019767,-0.041210,0.001262,-0.002509,0.000001,0.000000 -11.5396,7.5012,-177.52,20.04,False UCAC4 489-058518,14.86341109,7.6024651,10.52,9.60,9.10,0.2,0,,14.88370221,7.5011899,7.43,7.48,0,0,0 7456,Doressoundiram,17.03,8.996,1.5604,0,0,-2.281,-0.24,,0.8,0 0,296.7342,2024,5,19,203.8841,119.9007,14.7900,0.29975,2.62132,1.83558,13.36,5.0,0.15 1.912,0.0227,0.0033,106,0.0072,Known errors,1.12,0,-1,-1 20240519_058518,60139.35 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 14, 08:22 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org