IOTA/IOTA-ES occultation update for (3429) Chuvaev / UCAC4 406-140136 event on 2024 Oct 27, 13:04 UT Visible from Summary ------- On 2024 Oct 27 UT, the 9.219 km diameter asteroid (3429) Chuvaev will occult a 11.8 mag star in the constellation Aquarius for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 5.23 mag to 17.06 mag (the magnitude of the asteroid) for at most 1.630 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 Oct 27, 12:49 - 2024 Oct 27, 13:20 * geocentric midpoint of event [JD]: 2460611.04507804 * magnitude of target star: 11.84 * magnitude drop [mag]: 5.23 * estimated maximum duration [s]: 1.630 * Moon: 21 % sunlit, 177° distance * Sun: 123° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 11 * 1 sigma uncertainty interval [path widths]: +/- 0.29 * 1 sigma uncertainty interval [seconds]: +/- 6.1 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.038, +/- 0.014) * 1 sigma uncertainty ellipse (major, minor, PA): (0.041", 0.002", 70°) * approx speed of asteroid's shadow [km/s]: 5.6526 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 406-140136 by 3429 Chuvaev on 2024 Oct 27 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 10 0 0 -52 15 6 12 49 46.0 1 104 45 -52 18 19 -52 11 54 -52 20 12 -52 10 1 .... 11 0 0 -52 24 14 12 49 46.3 1 103 45 -52 27 27 -52 21 2 -52 29 19 -52 19 10 0.63 12 0 0 -52 33 8 12 49 46.7 2 102 44 -52 36 20 -52 29 56 -52 38 12 -52 28 4 0.67 13 0 0 -52 41 46 12 49 47.3 2 101 44 -52 44 58 -52 38 35 -52 46 50 -52 36 42 0.69 14 0 0 -52 50 10 12 49 48.0 3 100 43 -52 53 21 -52 46 58 -52 55 13 -52 45 6 0.70 15 0 0 -52 58 18 12 49 48.9 4 100 43 -53 1 29 -52 55 7 -53 3 21 -52 53 15 0.71 16 0 0 -53 6 12 12 49 50.0 4 99 42 -53 9 23 -53 3 1 -53 11 15 -53 1 10 0.71 17 0 0 -53 13 51 12 49 51.2 5 98 42 -53 17 1 -53 10 40 -53 18 53 -53 8 49 0.72 18 0 0 -53 21 14 12 49 52.6 6 97 41 -53 24 24 -53 18 4 -53 26 16 -53 16 13 0.72 19 0 0 -53 28 23 12 49 54.1 6 96 41 -53 31 33 -53 25 13 -53 33 24 -53 23 22 0.72 20 0 0 -53 35 17 12 49 55.8 7 96 40 -53 38 27 -53 32 7 -53 40 18 -53 30 16 0.72 21 0 0 -53 41 56 12 49 57.6 7 95 40 -53 45 5 -53 38 46 -53 46 56 -53 36 56 0.72 22 0 0 -53 48 20 12 49 59.6 8 94 39 -53 51 29 -53 45 11 -53 53 20 -53 43 20 0.72 23 0 0 -53 54 29 12 50 1.8 9 93 39 -53 57 38 -53 51 20 -53 59 28 -53 49 29 0.72 24 0 0 -54 0 23 12 50 4.1 9 92 38 -54 3 31 -53 57 14 -54 5 22 -53 55 24 0.73 25 0 0 -54 6 2 12 50 6.5 10 92 38 -54 9 10 -54 2 54 -54 11 1 -54 1 3 0.73 26 0 0 -54 11 26 12 50 9.0 10 91 37 -54 14 34 -54 8 18 -54 16 25 -54 6 28 0.73 27 0 0 -54 16 35 12 50 11.8 11 90 37 -54 19 43 -54 13 28 -54 21 34 -54 11 38 0.73 28 0 0 -54 21 30 12 50 14.6 12 89 36 -54 24 38 -54 18 22 -54 26 28 -54 16 32 0.73 29 0 0 -54 26 9 12 50 17.6 12 88 35 -54 29 17 -54 23 2 -54 31 7 -54 21 12 0.73 30 0 0 -54 30 34 12 50 20.7 13 87 35 -54 33 41 -54 27 27 -54 35 31 -54 25 37 0.73 31 0 0 -54 34 44 12 50 24.0 13 87 34 -54 37 51 -54 31 37 -54 39 40 -54 29 47 0.73 32 0 0 -54 38 38 12 50 27.4 14 86 34 -54 41 45 -54 35 32 -54 43 35 -54 33 42 0.73 33 0 0 -54 42 18 12 50 31.0 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18 -5 -49 57 48 -49 51 17 -49 59 42 -49 49 23 0.72 97 0 0 -49 41 10 12 59 8.5 48 17 -6 -49 44 26 -49 37 55 -49 46 21 -49 36 1 0.72 98 0 0 -49 27 31 12 59 21.6 49 15 -7 -49 30 47 -49 24 15 -49 32 42 -49 22 21 0.72 99 0 0 -49 13 34 12 59 35.0 49 14 -7 -49 16 50 -49 10 18 -49 18 45 -49 8 23 0.72 100 0 0 -48 59 20 12 59 48.5 49 12 -8 -49 2 36 -48 56 3 -49 4 32 -48 54 8 0.72 101 0 0 -48 44 48 13 0 2.3 50 11 -9 -48 48 5 -48 41 31 -48 50 1 -48 39 36 0.73 102 0 0 -48 30 0 13 0 16.1 50 9 -10 -48 33 17 -48 26 42 -48 35 13 -48 24 47 0.73 103 0 0 -48 14 54 13 0 30.2 50 8 -10 -48 18 11 -48 11 36 -48 20 7 -48 9 40 0.73 104 0 0 -47 59 30 13 0 44.4 51 6 -11 -48 2 49 -47 56 12 -48 4 45 -47 54 16 0.73 105 0 0 -47 43 50 13 0 58.8 51 4 -12 -47 47 9 -47 40 32 -47 49 5 -47 38 36 0.73 106 0 0 -47 27 53 13 1 13.4 51 3 -12 -47 31 12 -47 24 35 -47 33 9 -47 22 38 0.73 107 0 0 -47 11 39 13 1 28.1 52 1 -13 -47 14 59 -47 8 20 -47 16 56 -47 6 24 0.73 108 0 0 -46 55 9 13 1 43.0 52 359 -14 -46 58 29 -46 51 50 -47 0 26 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121 0 0 -42 56 50 13 5 10.1 54 336 -24 -43 0 13 -42 53 26 -43 2 13 -42 51 27 0.74 122 0 0 -42 36 50 13 5 26.9 54 334 -25 -42 40 14 -42 33 26 -42 42 13 -42 31 27 0.74 123 0 0 -42 16 37 13 5 43.9 54 332 -25 -42 20 1 -42 13 13 -42 22 1 -42 11 14 0.74 124 0 0 -41 56 13 13 6 0.9 53 330 -26 -41 59 37 -41 52 49 -42 1 37 -41 50 49 0.74 125 0 0 -41 35 37 13 6 17.9 53 328 -27 -41 39 1 -41 32 12 -41 41 1 -41 30 13 0.74 126 0 0 -41 14 49 13 6 35.1 53 326 -28 -41 18 14 -41 11 25 -41 20 14 -41 9 25 0.74 127 0 0 -40 53 51 13 6 52.3 53 324 -28 -40 57 16 -40 50 27 -40 59 17 -40 48 27 0.74 128 0 0 -40 32 43 13 7 9.6 53 322 -29 -40 36 8 -40 29 18 -40 38 9 -40 27 18 0.74 129 0 0 -40 11 25 13 7 27.0 53 321 -30 -40 14 51 -40 8 0 -40 16 51 -40 6 0 0.74 130 0 0 -39 49 59 13 7 44.3 52 319 -31 -39 53 24 -39 46 33 -39 55 24 -39 44 33 0.74 131 0 0 -39 28 23 13 8 1.8 52 317 -31 -39 31 49 -39 24 58 -39 33 49 -39 22 58 0.74 132 0 0 -39 6 40 13 8 19.2 52 315 -32 -39 10 5 -39 3 14 -39 12 6 -39 1 14 0.74 133 0 0 -38 44 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13 12 3.1 45 295 -41 -34 20 26 -34 13 35 -34 22 27 -34 11 35 0.75 146 0 0 -33 54 34 13 12 19.7 45 294 -42 -33 58 0 -33 51 9 -34 0 0 -33 49 9 0.76 147 0 0 -33 32 10 13 12 36.2 44 292 -42 -33 35 35 -33 28 45 -33 37 35 -33 26 45 0.76 148 0 0 -33 9 49 13 12 52.5 43 291 -43 -33 13 13 -33 6 24 -33 15 14 -33 4 24 0.76 149 0 0 -32 47 31 13 13 8.7 43 290 -44 -32 50 55 -32 44 6 -32 52 56 -32 42 6 0.76 150 0 0 -32 25 17 13 13 24.7 42 289 -44 -32 28 42 -32 21 53 -32 30 42 -32 19 53 0.76 151 0 0 -32 3 9 13 13 40.4 41 288 -45 -32 6 33 -31 59 45 -32 8 33 -31 57 45 0.76 152 0 0 -31 41 6 13 13 56.0 40 287 -45 -31 44 30 -31 37 42 -31 46 30 -31 35 43 0.76 153 0 0 -31 19 10 13 14 11.4 40 286 -46 -31 22 34 -31 15 46 -31 24 34 -31 13 47 0.76 154 0 0 -30 57 21 13 14 26.6 39 285 -46 -31 0 45 -30 53 58 -31 2 44 -30 51 58 0.76 155 0 0 -30 35 40 13 14 41.5 38 284 -46 -30 39 3 -30 32 17 -30 41 3 -30 30 17 0.76 156 0 0 -30 14 7 13 14 56.2 37 283 -47 -30 17 30 -30 10 44 -30 19 29 -30 8 45 0.76 157 0 0 -29 52 43 13 15 10.6 36 282 -47 -29 56 6 -29 49 21 -29 58 5 -29 47 22 0.76 158 0 0 -29 31 30 13 15 24.7 36 281 -48 -29 34 52 -29 28 7 -29 36 51 -29 26 8 0.77 159 0 0 -29 10 26 13 15 38.6 35 280 -48 -29 13 48 -29 7 4 -29 15 47 -29 5 6 0.77 160 0 0 -28 49 34 13 15 52.2 34 279 -48 -28 52 56 -28 46 12 -28 54 54 -28 44 14 0.77 161 0 0 -28 28 53 13 16 5.6 33 278 -48 -28 32 15 -28 25 32 -28 34 13 -28 23 34 0.77 162 0 0 -28 8 25 13 16 18.6 32 277 -49 -28 11 46 -28 5 4 -28 13 44 -28 3 6 0.77 163 0 0 -27 48 9 13 16 31.3 31 277 -49 -27 51 30 -27 44 48 -27 53 28 -27 42 51 0.77 164 0 0 -27 28 7 13 16 43.7 30 276 -49 -27 31 28 -27 24 47 -27 33 26 -27 22 49 0.77 165 0 0 -27 8 19 13 16 55.7 29 275 -49 -27 11 40 -27 4 59 -27 13 37 -27 3 2 0.77 166 0 0 -26 48 46 13 17 7.5 29 275 -49 -26 52 6 -26 45 26 -26 54 3 -26 43 29 0.77 167 0 0 -26 29 27 13 17 18.9 28 274 -49 -26 32 47 -26 26 8 -26 34 44 -26 24 11 0.77 168 0 0 -26 10 24 13 17 30.0 27 273 -49 -26 13 43 -26 7 5 -26 15 40 -26 5 8 0.77 169 0 0 -25 51 37 13 17 40.7 26 273 -49 -25 54 56 -25 48 18 -25 56 53 -25 46 22 0.77 170 0 0 -25 33 7 13 17 51.0 25 272 -49 -25 36 25 -25 29 48 -25 38 22 -25 27 52 0.77 171 0 0 -25 14 53 13 18 1.0 24 271 -49 -25 18 12 -25 11 35 -25 20 8 -25 9 39 0.77 172 0 0 -24 56 57 13 18 10.7 23 271 -49 -25 0 15 -24 53 39 -25 2 11 -24 51 43 0.78 173 0 0 -24 39 19 13 18 19.9 22 270 -49 -24 42 36 -24 36 1 -24 44 32 -24 34 6 0.78 174 0 0 -24 21 58 13 18 28.8 21 270 -49 -24 25 16 -24 18 41 -24 27 11 -24 16 46 0.78 175 0 0 -24 4 57 13 18 37.3 20 269 -49 -24 8 14 -24 1 40 -24 10 9 -23 59 45 0.78 176 0 0 -23 48 14 13 18 45.4 19 269 -48 -23 51 31 -23 44 58 -23 53 26 -23 43 3 0.78 177 0 0 -23 31 51 13 18 53.2 18 268 -48 -23 35 7 -23 28 35 -23 37 2 -23 26 40 0.78 178 0 0 -23 15 47 13 19 0.5 17 268 -48 -23 19 2 -23 12 31 -23 20 57 -23 10 37 0.78 179 0 0 -23 0 3 13 19 7.5 16 267 -48 -23 3 18 -22 56 47 -23 5 13 -22 54 53 0.78 180 0 0 -22 44 39 13 19 14.1 15 267 -47 -22 47 54 -22 41 24 -22 49 48 -22 39 30 0.78 -179 0 0 -22 29 35 13 19 20.3 14 266 -47 -22 32 50 -22 26 21 -22 34 44 -22 24 27 0.79 -178 0 0 -22 14 52 13 19 26.0 14 266 -47 -22 18 7 -22 11 38 -22 20 1 -22 9 45 0.79 -177 0 0 -22 0 31 13 19 31.4 13 265 -46 -22 3 45 -21 57 17 -22 5 38 -21 55 23 0.79 -176 0 0 -21 46 30 13 19 36.4 12 265 -46 -21 49 44 -21 43 16 -21 51 37 -21 41 23 0.79 -175 0 0 -21 32 51 13 19 41.0 11 265 -45 -21 36 4 -21 29 38 -21 37 57 -21 27 44 0.80 -174 0 0 -21 19 33 13 19 45.2 10 264 -45 -21 22 46 -21 16 21 -21 24 40 -21 14 28 0.80 -173 0 0 -21 6 38 13 19 49.0 9 264 -44 -21 9 50 -21 3 25 -21 11 43 -21 1 32 0.80 -172 0 0 -20 54 4 13 19 52.4 8 263 -44 -20 57 16 -20 50 51 -20 59 9 -20 48 59 0.81 -171 0 0 -20 41 52 13 19 55.3 7 263 -43 -20 45 4 -20 38 40 -20 46 56 -20 36 48 0.82 -170 0 0 -20 30 2 13 19 57.9 6 263 -43 -20 33 14 -20 26 51 -20 35 6 -20 24 58 0.83 -169 0 0 -20 18 35 13 20 0.1 5 262 -42 -20 21 46 -20 15 24 -20 23 39 -20 13 32 0.84 -168 0 0 -20 7 30 13 20 1.9 4 262 -41 -20 10 41 -20 4 19 -20 12 33 -20 2 27 0.86 -167 0 0 -19 56 48 13 20 3.3 3 262 -41 -19 59 59 -19 53 37 -20 1 51 -19 51 46 0.90 -166 0 0 -19 46 29 13 20 4.3 2 261 -40 -19 49 39 -19 43 18 -19 51 31 -19 41 27 0.97 -165 0 0 -19 36 32 13 20 4.9 1 261 -40 -19 39 42 -19 33 22 -19 41 34 -19 31 31 1.19 -164 0 0 -19 26 58 13 20 5.1 0 261 -39 -19 30 8 -19 23 48 -19 31 59 -19 21 57 12.62 Uncertainty in time = +/- 6 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: UCAC4 406-140136 * constellation : Aquarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 22 36 03.7501 DE: -08 55 21.799 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 22 36 03.7500 DE: -08 55 21.799 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 11.8 * B mag [mag]: 12.2 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (3429) Chuvaev asteroid class: approx. diameter [km]: 9 approx. diameter ["]: 0.011 distance from Earth [AU]: 1.18100 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#42 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): 0.041", 0.002", 69.819° remarks: * orbital elements for (3429)Chuvaev : Mean anomaly = 13.0932559379 deg Arg. of pericenter = 163.0383288849 deg Long. of node = 180.6156498613 deg Inclination = 1.3341496868 deg Eccentricity = 0.1892932514 Semimajor axis = 2.3387901275 AU Perihelion dist = 1.8960729400 AU Mag: H = 14.11, G = 0.15 Epoch of elements : MJD 60610.54507875 TDT (2024 Oct 27.5451) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#422023Apr24,1.63,2024,10,27,13.081873,0.168413,-0.565148,3.057730,0.910828,0.004083,0.001641,0.000001,0.000000 106.7323,-8.7936,-20.27,-13.06,False UCAC4 406-140136,22.60104171,-8.9227218,12.15,11.84,11.67,0.0,0,,22.62292465,-8.7936255,5.23,4.95,0,0,0 3429,Chuvaev,17.06,9.219,1.1810,0,0,1.537,6.79,,0.6,0 0,12.9431,2024,10,27,163.0383,180.6156,1.3341,0.18929,2.33879,1.89607,14.11,5.0,0.15 1.293,0.0407,0.0019,70,0.0032,Known errors,0.77,0,-1,-1 20241027_140136,60140.66 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 15:54 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org