IOTA/IOTA-ES occultation update for (488) Kreusa / UCAC4-564-023329 event on 2023 Nov 18, 09:35 UT Visible from E USA, Canada Summary ------- On 2023 Nov 18 UT, the 156.8 km diameter asteroid (488) Kreusa will occult a 12.4 mag star in the constellation Gemini for observers along a path across E USA, Canada. In the case of an occultation, the combined light of the asteroid and the star will drop by 0.91 mag to 12.66 mag (the magnitude of the asteroid) for at most 19.610 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: 100 * date and approx. time of event: 2023 Nov 18, 09:22 - 2023 Nov 18, 09:46 * geocentric midpoint of event [JD]: 2460266.89891388 * magnitude of target star: 12.37 * magnitude drop [mag]: 0.91 * estimated maximum duration [s]: 19.610 * Moon: 28 % sunlit, 151° distance * Sun: 144° distance * rough path description: E USA, Canada The occultation path -------------------- * approximate projected width [km]: 183 * 1 sigma uncertainty interval [path widths]: +/- 0.10 * 1 sigma uncertainty interval [seconds]: +/- 2.8 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.017, +/- 0.004) * 1 sigma uncertainty ellipse (major, minor, PA): (0.017", 0.002", 80°) * approx speed of asteroid's shadow [km/s]: 7.9970 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4-564-023329 by 488 Kreusa on 2023 Nov 18 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 0 0 0 .. .. .... .. .. .. .. .. .. 50 42 53 .. .. .. 50 55 19 .. .. .. .... 129 0 0 50 10 22 9 45 48.6 0 54 -20 51 11 42 .. .. .. 51 24 5 .. .. .. .... 130 0 0 50 38 48 9 45 48.4 1 54 -21 51 39 54 49 38 30 51 52 14 49 26 30 -0.54 131 0 0 51 6 38 9 45 48.1 2 55 -22 52 7 29 50 6 34 52 19 47 49 54 37 -0.56 132 0 0 51 33 52 9 45 47.6 3 56 -22 52 34 28 50 34 3 52 46 42 50 22 9 -0.56 133 0 0 52 0 30 9 45 46.9 3 57 -23 53 0 50 51 0 55 53 13 2 50 49 4 -0.57 134 0 0 52 26 32 9 45 46.1 4 57 -24 53 26 37 51 27 12 53 38 45 51 15 24 -0.57 135 0 0 52 51 58 9 45 45.1 5 58 -24 53 51 48 51 52 53 54 3 53 51 41 8 -0.57 136 0 0 53 16 49 9 45 44.0 6 59 -25 54 16 23 52 17 59 54 28 25 52 6 17 -0.57 137 0 0 53 41 5 9 45 42.8 6 60 -25 54 40 24 52 42 31 54 52 23 52 30 51 -0.57 138 0 0 54 4 47 9 45 41.5 7 61 -26 55 3 50 53 6 28 55 15 45 52 54 51 -0.57 139 0 0 54 27 54 9 45 40.0 8 61 -27 55 26 41 53 29 50 55 38 34 53 18 17 -0.58 140 0 0 54 50 28 9 45 38.4 8 62 -27 55 48 59 53 52 39 56 0 48 53 41 9 -0.58 141 0 0 55 12 28 9 45 36.7 9 63 -28 56 10 43 54 14 55 56 22 29 54 3 27 -0.58 142 0 0 55 33 55 9 45 34.9 10 64 -28 56 31 55 54 36 37 56 43 37 54 25 13 -0.58 143 0 0 55 54 50 9 45 33.1 10 65 -29 56 52 33 54 57 47 57 4 13 54 46 26 -0.58 144 0 0 56 15 12 9 45 31.1 11 66 -29 57 12 40 55 18 24 57 24 16 55 7 6 -0.58 145 0 0 56 35 3 9 45 29.0 12 66 -30 57 32 15 55 38 30 57 43 48 55 27 15 -0.58 146 0 0 56 54 22 9 45 26.9 12 67 -30 57 51 19 55 58 5 58 2 49 55 46 52 -0.58 147 0 0 57 13 11 9 45 24.7 13 68 -31 58 9 52 56 17 8 58 21 19 56 5 59 -0.58 148 0 0 57 31 29 9 45 22.4 13 69 -31 58 27 55 56 35 41 58 39 19 56 24 35 -0.58 149 0 0 57 49 18 9 45 20.0 14 70 -31 58 45 28 56 53 44 58 56 49 56 42 41 -0.58 150 0 0 58 6 37 9 45 17.5 15 71 -32 59 2 32 57 11 18 59 13 50 57 0 17 -0.58 151 0 0 58 23 27 9 45 15.0 15 72 -32 59 19 8 57 28 22 59 30 22 57 17 24 -0.58 152 0 0 58 39 48 9 45 12.5 16 72 -33 59 35 14 57 44 58 59 46 26 57 34 3 -0.58 153 0 0 58 55 41 9 45 9.8 16 73 -33 59 50 53 58 1 5 60 2 2 57 50 13 -0.58 154 0 0 59 11 7 9 45 7.2 17 74 -34 60 6 5 58 16 45 60 17 10 58 5 55 -0.58 155 0 0 59 26 6 9 45 4.4 18 75 -34 60 20 49 58 31 57 60 31 52 58 21 10 -0.58 156 0 0 59 40 37 9 45 1.7 18 76 -34 60 35 7 58 46 42 60 46 7 58 35 57 -0.59 157 0 0 59 54 43 9 44 58.8 19 77 -35 60 48 59 59 1 0 60 59 56 58 50 18 -0.59 158 0 0 60 8 22 9 44 55.9 19 78 -35 61 2 26 59 14 53 61 13 20 59 4 13 -0.59 159 0 0 60 21 37 9 44 53.0 20 79 -35 61 15 27 59 28 19 61 26 18 59 17 43 -0.59 160 0 0 60 34 26 9 44 50.1 20 79 -36 61 28 3 59 41 21 61 38 52 59 30 46 -0.59 161 0 0 60 46 50 9 44 47.1 21 80 -36 61 40 15 59 53 57 61 51 1 59 43 25 -0.59 162 0 0 60 58 50 9 44 44.0 21 81 -36 61 52 3 60 6 9 62 2 47 59 55 39 -0.59 163 0 0 61 10 26 9 44 40.9 22 82 -37 62 3 27 60 17 57 62 14 9 60 7 29 -0.59 164 0 0 61 21 39 9 44 37.8 22 83 -37 62 14 28 60 29 21 62 25 7 60 18 56 -0.59 165 0 0 61 32 28 9 44 34.7 23 84 -37 62 25 6 60 40 21 62 35 43 60 29 58 -0.59 166 0 0 61 42 55 9 44 31.5 23 85 -38 62 35 22 60 50 59 62 45 57 60 40 38 -0.59 167 0 0 61 52 59 9 44 28.2 24 86 -38 62 45 16 61 1 13 62 55 48 60 50 54 -0.59 168 0 0 62 2 41 9 44 25.0 24 87 -38 62 54 47 61 11 6 63 5 18 61 0 49 -0.59 169 0 0 62 12 2 9 44 21.7 25 88 -38 63 3 58 61 20 36 63 14 26 61 10 21 -0.59 170 0 0 62 21 1 9 44 18.4 25 89 -39 63 12 47 61 29 44 63 23 13 61 19 31 -0.59 171 0 0 62 29 38 9 44 15.1 26 90 -39 63 21 15 61 38 31 63 31 39 61 28 19 -0.59 172 0 0 62 37 55 9 44 11.7 26 91 -39 63 29 23 61 46 56 63 39 45 61 36 47 -0.59 173 0 0 62 45 51 9 44 8.3 26 91 -40 63 37 10 61 55 1 63 47 31 61 44 53 -0.59 174 0 0 62 53 27 9 44 4.9 27 92 -40 63 44 38 62 2 45 63 54 57 61 52 39 -0.59 175 0 0 63 0 43 9 44 1.4 27 93 -40 63 51 45 62 10 9 64 2 3 62 0 4 -0.59 176 0 0 63 7 39 9 43 57.9 28 94 -40 63 58 34 62 17 13 64 8 49 62 7 9 -0.59 177 0 0 63 14 16 9 43 54.4 28 95 -40 64 5 3 62 23 56 64 15 17 62 13 54 -0.59 178 0 0 63 20 33 9 43 50.9 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-30 46 41 38 44 37 31 46 54 16 44 25 16 -0.60 - 80 0 0 45 6 48 9 32 42.1 58 236 -30 46 9 25 44 5 4 46 22 4 43 52 48 -0.60 - 79 0 0 44 33 59 9 32 30.2 58 238 -29 45 36 42 43 32 9 45 49 23 43 19 52 -0.60 - 78 0 0 44 0 42 9 32 18.1 57 239 -28 45 3 31 42 58 47 45 16 13 42 46 29 -0.60 - 77 0 0 43 26 58 9 32 6.0 57 241 -28 44 29 52 42 24 58 44 42 35 42 12 39 -0.60 - 76 0 0 42 52 47 9 31 53.8 57 243 -27 43 55 45 41 50 43 44 8 29 41 38 23 -0.60 - 75 0 0 42 18 10 9 31 41.6 56 245 -26 43 21 12 41 16 2 43 33 56 41 3 41 -0.60 - 74 0 0 41 43 7 9 31 29.2 56 247 -25 42 46 12 40 40 57 42 58 57 40 28 35 -0.60 - 73 0 0 41 7 40 9 31 16.8 55 249 -25 42 10 47 40 5 27 42 23 33 39 53 5 -0.60 - 72 0 0 40 31 49 9 31 4.3 55 251 -24 41 34 58 39 29 34 41 47 44 39 17 12 -0.60 - 71 0 0 39 55 35 9 30 51.8 54 252 -23 40 58 45 38 53 19 41 11 32 38 40 56 -0.59 - 70 0 0 39 18 59 9 30 39.3 54 254 -22 40 22 10 38 16 42 40 34 56 38 4 20 -0.59 - 69 0 0 38 42 2 9 30 26.7 53 256 -21 39 45 12 37 39 45 39 57 59 37 27 22 -0.59 - 68 0 0 38 4 44 9 30 14.1 53 257 -21 39 7 54 37 2 28 39 20 41 36 50 6 -0.59 - 67 0 0 37 27 8 9 30 1.5 52 259 -20 38 30 16 36 24 53 38 43 2 36 12 31 -0.59 - 66 0 0 36 49 13 9 29 49.0 52 261 -19 37 52 20 35 47 0 38 5 5 35 34 38 -0.59 - 65 0 0 36 11 2 9 29 36.4 51 262 -18 37 14 5 35 8 51 37 26 51 34 56 29 -0.59 - 64 0 0 35 32 34 9 29 23.8 50 263 -17 36 35 35 34 30 27 36 48 19 34 18 6 -0.59 - 63 0 0 34 53 52 9 29 11.3 50 265 -16 35 56 49 33 51 48 36 9 33 33 39 28 -0.59 - 62 0 0 34 14 57 9 28 58.8 49 266 -15 35 17 49 33 12 57 35 30 32 33 0 37 -0.59 - 61 0 0 33 35 49 9 28 46.4 48 268 -15 34 38 36 32 33 54 34 51 18 32 21 35 -0.59 - 60 0 0 32 56 30 9 28 34.0 47 269 -14 33 59 12 31 54 41 34 11 53 31 42 23 -0.59 - 59 0 0 32 17 2 9 28 21.8 46 270 -13 33 19 38 31 15 18 33 32 17 31 3 2 -0.59 - 58 0 0 31 37 26 9 28 9.6 46 271 -12 32 39 55 30 35 48 32 52 32 30 23 33 -0.59 - 57 0 0 30 57 42 9 27 57.5 45 272 -11 32 0 4 29 56 11 32 12 40 29 43 57 -0.59 - 56 0 0 30 17 53 9 27 45.5 44 273 -10 31 20 7 29 16 29 31 32 42 29 4 17 -0.59 - 55 0 0 29 37 59 9 27 33.6 43 274 -9 30 40 5 28 36 43 30 52 38 28 24 32 -0.59 - 54 0 0 28 58 2 9 27 21.9 42 275 -8 30 0 0 27 56 55 30 12 31 27 44 45 -0.59 - 53 0 0 28 18 4 9 27 10.4 41 276 -7 29 19 52 27 17 5 29 32 22 27 4 57 -0.59 - 52 0 0 27 38 6 9 26 58.9 40 277 -6 28 39 44 26 37 16 28 52 12 26 25 10 -0.59 - 51 0 0 26 58 8 9 26 47.7 40 278 -5 27 59 37 25 57 28 28 12 2 25 45 24 -0.58 - 50 0 0 26 18 14 9 26 36.6 39 279 -4 27 19 32 25 17 43 27 31 55 25 5 41 -0.58 - 49 0 0 25 38 23 9 26 25.7 38 280 -3 26 39 30 24 38 2 26 51 51 24 26 2 -0.58 - 48 0 0 24 58 37 9 26 15.1 37 281 -2 25 59 34 23 58 27 26 11 52 23 46 29 -0.58 - 47 0 0 24 18 58 9 26 4.6 36 281 -1 25 19 43 23 18 59 25 31 59 23 7 3 -0.58 - 46 0 0 23 39 27 9 25 54.4 35 282 0 24 40 0 22 39 39 24 52 14 22 27 45 -0.58 - 45 0 0 23 0 5 9 25 44.3 34 283 1 24 0 27 22 0 29 24 12 38 21 48 37 -0.58 - 44 0 0 22 20 54 9 25 34.6 33 283 3 23 21 3 21 21 29 23 33 12 21 9 40 -0.58 - 43 0 0 21 41 55 9 25 25.0 32 284 4 22 41 52 20 42 42 22 53 58 20 30 55 -0.58 - 42 0 0 21 3 9 9 25 15.7 31 285 5 22 2 53 20 4 8 22 14 57 19 52 23 -0.58 - 41 0 0 20 24 37 9 25 6.7 30 285 6 21 24 8 19 25 49 21 36 9 19 14 7 -0.58 - 40 0 0 19 46 21 9 24 58.0 29 286 7 20 45 39 18 47 45 20 57 38 18 36 6 -0.59 - 39 0 0 19 8 22 9 24 49.5 28 286 8 20 7 27 18 9 59 20 19 23 17 58 22 -0.59 - 38 0 0 18 30 41 9 24 41.4 26 287 9 19 29 33 17 32 31 19 41 26 17 20 56 -0.59 - 37 0 0 17 53 20 9 24 33.5 25 287 10 18 51 58 16 55 22 19 3 48 16 43 50 -0.59 - 36 0 0 17 16 18 9 24 25.9 24 288 11 18 14 43 16 18 34 18 26 30 16 7 5 -0.59 - 35 0 0 16 39 38 9 24 18.6 23 288 12 17 37 49 15 42 8 17 49 34 15 30 41 -0.59 - 34 0 0 16 3 21 9 24 11.6 22 288 13 17 1 18 15 6 4 17 13 0 14 54 39 -0.59 - 33 0 0 15 27 28 9 24 5.0 21 289 14 16 25 11 14 30 23 16 36 49 14 19 2 -0.59 - 32 0 0 14 51 58 9 23 58.6 20 289 16 15 49 28 13 55 8 16 1 4 13 43 48 -0.59 - 31 0 0 14 16 55 9 23 52.6 19 289 17 15 14 10 13 20 18 15 25 43 13 9 1 -0.59 - 30 0 0 13 42 18 9 23 46.9 18 290 18 14 39 19 12 45 54 14 50 50 12 34 40 -0.59 - 29 0 0 13 8 8 9 23 41.6 17 290 19 14 4 56 12 11 58 14 16 23 12 0 47 -0.60 - 28 0 0 12 34 27 9 23 36.5 16 290 20 13 31 1 11 38 30 13 42 26 11 27 21 -0.60 - 27 0 0 12 1 15 9 23 31.8 15 291 21 12 57 35 11 5 31 13 8 57 10 54 25 -0.60 - 26 0 0 11 28 33 9 23 27.5 14 291 22 12 24 39 10 33 2 12 35 58 10 21 59 -0.60 - 25 0 0 10 56 21 9 23 23.4 12 291 23 11 52 14 10 1 4 12 3 30 9 50 3 -0.61 - 24 0 0 10 24 41 9 23 19.8 11 291 24 11 20 20 9 29 37 11 31 34 9 18 39 -0.61 - 23 0 0 9 53 34 9 23 16.4 10 291 25 10 48 59 8 58 42 11 0 10 8 47 47 -0.61 - 22 0 0 9 22 59 9 23 13.4 9 292 27 10 18 11 8 28 20 10 29 19 8 17 27 -0.62 - 21 0 0 8 52 57 9 23 10.7 8 292 28 9 47 56 7 58 31 9 59 2 7 47 41 -0.63 - 20 0 0 8 23 30 9 23 8.4 7 292 29 9 18 16 7 29 17 9 29 19 7 18 29 -0.64 - 19 0 0 7 54 37 9 23 6.4 6 292 30 8 49 10 7 0 37 9 0 10 6 49 51 -0.65 - 18 0 0 7 26 20 9 23 4.8 5 292 31 8 20 40 6 32 31 8 31 38 6 21 48 -0.67 - 17 0 0 6 58 38 9 23 3.4 4 292 32 7 52 46 6 5 2 8 3 41 5 54 21 -0.70 - 16 0 0 6 31 32 9 23 2.5 3 293 33 7 25 28 5 38 8 7 36 20 5 27 30 -0.75 - 15 0 0 6 5 4 9 23 1.8 2 293 34 6 58 47 5 11 51 7 9 37 5 1 15 -0.87 - 14 0 0 5 39 12 9 23 1.5 0 293 35 6 32 44 4 46 11 6 43 31 4 35 38 -1.57 Uncertainty in time = +/- 3 secs Prediction of 2023 Oct 15.9 Data for the target star ------------------------ * name: UCAC4-564-023329 * constellation : Gemini * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 06 06 48.2812 DE: +22 41 32.605 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 06 06 48.2812 DE: +22 41 32.605 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 12.4 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (488) Kreusa asteroid class: approx. diameter [km]: 157 approx. diameter ["]: 0.101 distance from Earth [AU]: 2.14710 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#128 date of fit: 2023 Oct 09 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): 0.017", 0.002", 79.833° remarks: * orbital elements for (488)Kreusa : Mean anomaly = 297.7480042152 deg Arg. of pericenter = 76.9960715855 deg Long. of node = 82.9801693668 deg Inclination = 11.4747461539 deg Eccentricity = 0.1582595160 Semimajor axis = 3.1674442277 AU Perihelion dist = 2.6661660371 AU Mag: H = 7.91, G = 0.15 Epoch of elements : MJD 60266.39937500 TDT (2023 Nov 18.3994) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#1282023Oct09,19.61,2023,11,18,9.573933,0.216708,0.465369,-4.091200,1.906848,-0.003487,0.000115,0.000001,0.000000 -108.7189,22.6903,32.67,-19.20,False UCAC4-564-023329,6.11341142,22.6923904,0.00,12.37,0.00,0.0,0,,6.13769703,22.6902807,0.91,0.00,0,0,0 488,Kreusa,12.66,156.800,2.1471,0,0,-1.211,7.81,,8.8,0 0,297.6782,2023,11,18,76.9961,82.9802,11.4747,0.15826,3.16744,2.66617,7.92,5.0,0.15 1.100,0.0173,0.0018,80,0.0174,Known errors,-1.00,0,-1,-1 20231118_023329,60232.88 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Oct 15, 21:06 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org