IOTA/IOTA-ES occultation update for (253) Mathilde / TYC 0675-00413-1 event on 2023 Dec 31, 23:34 UT Visible from S Africa, South America Summary ------- On 2023 Dec 31 UT, the 57.9 km diameter asteroid (253) Mathilde will occult a 11.2 mag star in the constellation Taurus for observers along a path across S Africa, South America. In the case of an occultation, the combined light of the asteroid and the star will drop by 3.25 mag to 14.42 mag (the magnitude of the asteroid) for at most 9.090 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 Dec 31, 23:20 - 2023 Dec 31, 23:49 * geocentric midpoint of event [JD]: 2460310.48245683 * magnitude of target star: 11.23 * magnitude drop [mag]: 3.25 * estimated maximum duration [s]: 9.090 * Moon: 78 % sunlit, 92° distance * Sun: 144° distance * rough path description: S Africa, South America Additional comments ------------------- RUWE The occultation path -------------------- * approximate projected width [km]: 69 * 1 sigma uncertainty interval [path widths]: +/- 0.04 * 1 sigma uncertainty interval [seconds]: +/- 1.3 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.007, +/- 0.001) * 1 sigma uncertainty ellipse (major, minor, PA): (0.007", 0.001", 83°) * approx speed of asteroid's shadow [km/s]: 6.3697 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 0675-00413-1 by 253 Mathilde on 2023 Dec 31 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 -117 0 0 -22 55 54 23 48 43.7 1 77 36 -22 36 37 -23 15 15 -22 34 55 -23 16 57 .... -116 0 0 -22 44 0 23 48 43.3 2 77 35 -22 24 45 -23 3 20 -22 23 3 -23 5 3 0.42 -115 0 0 -22 32 21 23 48 42.6 3 77 34 -22 13 6 -22 51 39 -22 11 25 -22 53 22 0.51 -114 0 0 -22 20 55 23 48 41.6 4 76 33 -22 1 42 -22 40 12 -22 0 0 -22 41 54 0.55 -113 0 0 -22 9 43 23 48 40.2 4 76 32 -21 50 31 -22 29 0 -21 48 50 -22 30 42 0.58 -112 0 0 -21 58 46 23 48 38.5 5 75 31 -21 39 35 -22 18 1 -21 37 54 -22 19 43 0.59 -111 0 0 -21 48 4 23 48 36.5 6 75 30 -21 28 54 -22 7 18 -21 27 13 -22 9 0 0.60 -110 0 0 -21 37 36 23 48 34.2 7 75 29 -21 18 27 -21 56 49 -21 16 46 -21 58 30 0.61 -109 0 0 -21 27 23 23 48 31.6 8 74 28 -21 8 16 -21 46 35 -21 6 35 -21 48 16 0.62 -108 0 0 -21 17 25 23 48 28.7 9 74 27 -20 58 19 -21 36 36 -20 56 38 -21 38 17 0.62 -107 0 0 -21 7 42 23 48 25.4 10 74 26 -20 48 37 -21 26 52 -20 46 57 -21 28 33 0.63 -106 0 0 -20 58 15 23 48 21.9 11 73 25 -20 39 11 -21 17 23 -20 37 30 -21 19 5 0.63 -105 0 0 -20 49 3 23 48 18.0 12 73 24 -20 30 0 -21 8 10 -20 28 20 -21 9 52 0.63 -104 0 0 -20 40 7 23 48 13.9 13 72 24 -20 21 5 -20 59 13 -20 19 24 -21 0 54 0.63 -103 0 0 -20 31 26 23 48 9.4 14 72 23 -20 12 25 -20 50 31 -20 10 45 -20 52 12 0.63 -102 0 0 -20 23 1 23 48 4.7 15 72 22 -20 4 1 -20 42 5 -20 2 21 -20 43 46 0.64 -101 0 0 -20 14 52 23 47 59.6 16 71 21 -19 55 53 -20 33 55 -19 54 13 -20 35 36 0.64 -100 0 0 -20 6 59 23 47 54.3 17 71 20 -19 48 1 -20 26 1 -19 46 21 -20 27 42 0.64 - 99 0 0 -19 59 22 23 47 48.6 17 71 19 -19 40 25 -20 18 23 -19 38 45 -20 20 4 0.64 - 98 0 0 -19 52 1 23 47 42.7 18 70 18 -19 33 5 -20 11 1 -19 31 25 -20 12 42 0.64 - 97 0 0 -19 44 56 23 47 36.5 19 70 17 -19 26 1 -20 3 56 -19 24 21 -20 5 36 0.64 - 96 0 0 -19 38 8 23 47 30.0 20 69 16 -19 19 14 -19 57 6 -19 17 34 -19 58 47 0.64 - 95 0 0 -19 31 36 23 47 23.3 21 69 15 -19 12 42 -19 50 34 -19 11 3 -19 52 14 0.64 - 94 0 0 -19 25 20 23 47 16.3 22 69 14 -19 6 28 -19 44 17 -19 4 48 -19 45 57 0.64 - 93 0 0 -19 19 21 23 47 9.0 23 68 14 -19 0 29 -19 38 17 -18 58 50 -19 39 57 0.64 - 92 0 0 -19 13 39 23 47 1.4 24 68 13 -18 54 47 -19 32 34 -18 53 8 -19 34 14 0.64 - 91 0 0 -19 8 12 23 46 53.6 25 67 12 -18 49 22 -19 27 7 -18 47 43 -19 28 47 0.64 - 90 0 0 -19 3 3 23 46 45.5 25 67 11 -18 44 13 -19 21 57 -18 42 34 -19 23 37 0.64 - 89 0 0 -18 58 10 23 46 37.2 26 66 10 -18 39 21 -19 17 3 -18 37 42 -19 18 43 0.64 - 88 0 0 -18 53 34 23 46 28.6 27 66 9 -18 34 45 -19 12 26 -18 33 6 -19 14 6 0.64 - 87 0 0 -18 49 14 23 46 19.8 28 65 8 -18 30 27 -19 8 6 -18 28 47 -19 9 46 0.64 - 86 0 0 -18 45 11 23 46 10.7 29 65 7 -18 26 24 -19 4 3 -18 24 45 -19 5 42 0.64 - 85 0 0 -18 41 25 23 46 1.4 30 64 7 -18 22 39 -19 0 16 -18 21 0 -19 1 56 0.64 - 84 0 0 -18 37 56 23 45 51.8 31 64 6 -18 19 10 -18 56 46 -18 17 31 -18 58 26 0.64 - 83 0 0 -18 34 43 23 45 42.0 31 63 5 -18 15 58 -18 53 33 -18 14 19 -18 55 12 0.64 - 82 0 0 -18 31 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52 52 -23 12 48 -23 54 33 0.66 - 21 0 0 -23 45 34 23 31 14.9 54 348 -35 -23 26 24 -24 4 48 -23 24 43 -24 6 30 0.66 - 20 0 0 -23 57 40 23 31 0.0 54 346 -36 -23 38 29 -24 16 56 -23 36 48 -24 18 38 0.66 - 19 0 0 -24 9 57 23 30 45.3 53 345 -36 -23 50 44 -24 29 13 -23 49 3 -24 30 55 0.66 - 18 0 0 -24 22 23 23 30 30.5 53 343 -36 -24 3 10 -24 41 40 -24 1 28 -24 43 23 0.66 - 17 0 0 -24 34 59 23 30 15.9 53 342 -37 -24 15 45 -24 54 17 -24 14 3 -24 56 0 0.66 - 16 0 0 -24 47 45 23 30 1.4 52 341 -37 -24 28 29 -25 7 4 -24 26 48 -25 8 46 0.66 - 15 0 0 -25 0 39 23 29 47.0 52 339 -37 -24 41 23 -25 20 0 -24 39 42 -25 21 43 0.66 - 14 0 0 -25 13 43 23 29 32.7 51 338 -37 -24 54 26 -25 33 5 -24 52 44 -25 34 48 0.66 - 13 0 0 -25 26 56 23 29 18.5 51 337 -37 -25 7 38 -25 46 19 -25 5 56 -25 48 2 0.66 - 12 0 0 -25 40 18 23 29 4.4 50 336 -37 -25 20 59 -25 59 42 -25 19 17 -26 1 24 0.66 - 11 0 0 -25 53 48 23 28 50.5 49 334 -38 -25 34 27 -26 13 12 -25 32 45 -26 14 55 0.66 - 10 0 0 -26 7 26 23 28 36.6 49 333 -38 -25 48 4 -26 26 51 -25 46 22 -26 28 34 0.66 - 9 0 0 -26 21 11 23 28 22.9 48 332 -38 -26 1 49 -26 40 38 -26 0 7 -26 42 21 0.66 - 8 0 0 -26 35 5 23 28 9.4 48 331 -38 -26 15 42 -26 54 33 -26 13 59 -26 56 16 0.66 - 7 0 0 -26 49 6 23 27 55.9 47 330 -38 -26 29 42 -27 8 34 -26 27 59 -27 10 18 0.66 - 6 0 0 -27 3 14 23 27 42.7 46 329 -38 -26 43 49 -27 22 43 -26 42 6 -27 24 27 0.66 - 5 0 0 -27 17 28 23 27 29.5 46 328 -38 -26 58 2 -27 36 59 -26 56 20 -27 38 42 0.66 - 4 0 0 -27 31 50 23 27 16.6 45 327 -38 -27 12 23 -27 51 21 -27 10 40 -27 53 5 0.66 - 3 0 0 -27 46 17 23 27 3.8 44 326 -38 -27 26 49 -28 5 50 -27 25 7 -28 7 33 0.66 - 2 0 0 -28 0 51 23 26 51.1 44 325 -38 -27 41 22 -28 20 24 -27 39 39 -28 22 8 0.66 - 1 0 0 -28 15 30 23 26 38.6 43 324 -38 -27 56 1 -28 35 5 -27 54 18 -28 36 48 0.66 - 0 0 0 -28 30 15 23 26 26.3 42 323 -38 -28 10 45 -28 49 50 -28 9 2 -28 51 34 0.67 1 0 0 -28 45 5 23 26 14.2 42 322 -38 -28 25 34 -29 4 41 -28 23 51 -29 6 25 0.67 2 0 0 -29 0 0 23 26 2.2 41 321 -38 -28 40 28 -29 19 37 -28 38 45 -29 21 21 0.67 3 0 0 -29 15 0 23 25 50.4 40 320 -37 -28 55 27 -29 34 38 -28 53 44 -29 36 22 0.67 4 0 0 -29 30 4 23 25 38.9 40 319 -37 -29 10 30 -29 49 42 -29 8 47 -29 51 26 0.67 5 0 0 -29 45 12 23 25 27.5 39 318 -37 -29 25 37 -30 4 51 -29 23 54 -30 6 35 0.67 6 0 0 -30 0 23 23 25 16.3 38 318 -37 -29 40 48 -30 20 3 -29 39 5 -30 21 48 0.67 7 0 0 -30 15 39 23 25 5.3 37 317 -37 -29 56 2 -30 35 19 -29 54 19 -30 37 4 0.67 8 0 0 -30 30 57 23 24 54.5 37 316 -37 -30 11 20 -30 50 38 -30 9 36 -30 52 23 0.67 9 0 0 -30 46 18 23 24 43.9 36 315 -36 -30 26 40 -31 6 0 -30 24 57 -31 7 44 0.67 10 0 0 -31 1 41 23 24 33.5 35 314 -36 -30 42 3 -31 21 24 -30 40 20 -31 23 9 0.67 11 0 0 -31 17 7 23 24 23.3 34 314 -36 -30 57 29 -31 36 51 -30 55 45 -31 38 35 0.67 12 0 0 -31 32 35 23 24 13.3 34 313 -35 -31 12 56 -31 52 19 -31 11 12 -31 54 4 0.67 13 0 0 -31 48 4 23 24 3.6 33 312 -35 -31 28 24 -32 7 49 -31 26 41 -32 9 33 0.67 14 0 0 -32 3 35 23 23 54.0 32 311 -35 -31 43 55 -32 23 20 -31 42 11 -32 25 5 0.67 15 0 0 -32 19 7 23 23 44.7 31 311 -35 -31 59 26 -32 38 52 -31 57 42 -32 40 37 0.67 16 0 0 -32 34 39 23 23 35.6 30 310 -34 -32 14 58 -32 54 25 -32 13 14 -32 56 10 0.67 17 0 0 -32 50 12 23 23 26.8 30 309 -34 -32 30 30 -33 9 58 -32 28 46 -33 11 43 0.67 18 0 0 -33 5 44 23 23 18.2 29 309 -33 -32 46 2 -33 25 31 -32 44 18 -33 27 16 0.67 19 0 0 -33 21 17 23 23 9.7 28 308 -33 -33 1 34 -33 41 4 -32 59 50 -33 42 49 0.67 20 0 0 -33 36 49 23 23 1.6 27 307 -33 -33 17 6 -33 56 36 -33 15 22 -33 58 21 0.67 21 0 0 -33 52 20 23 22 53.6 26 307 -32 -33 32 37 -34 12 8 -33 30 53 -34 13 53 0.67 22 0 0 -34 7 50 23 22 45.9 26 306 -32 -33 48 7 -34 27 38 -33 46 23 -34 29 23 0.67 23 0 0 -34 23 18 23 22 38.5 25 305 -31 -34 3 35 -34 43 6 -34 1 51 -34 44 51 0.67 24 0 0 -34 38 45 23 22 31.2 24 305 -31 -34 19 1 -34 58 33 -34 17 17 -35 0 18 0.68 25 0 0 -34 54 9 23 22 24.3 23 304 -30 -34 34 26 -35 13 58 -34 32 42 -35 15 43 0.68 26 0 0 -35 9 32 23 22 17.5 22 303 -30 -34 49 48 -35 29 20 -34 48 4 -35 31 5 0.68 27 0 0 -35 24 51 23 22 11.0 22 303 -30 -35 5 7 -35 44 39 -35 3 23 -35 46 24 0.68 28 0 0 -35 40 7 23 22 4.7 21 302 -29 -35 20 23 -35 59 56 -35 18 39 -36 1 41 0.68 29 0 0 -35 55 20 23 21 58.7 20 301 -29 -35 35 37 -36 15 9 -35 33 53 -36 16 54 0.68 30 0 0 -36 10 30 23 21 52.9 19 301 -28 -35 50 46 -36 30 18 -35 49 2 -36 32 3 0.68 31 0 0 -36 25 35 23 21 47.4 18 300 -28 -36 5 52 -36 45 24 -36 4 8 -36 47 8 0.68 32 0 0 -36 40 37 23 21 42.1 18 299 -27 -36 20 53 -37 0 25 -36 19 9 -37 2 10 0.68 33 0 0 -36 55 33 23 21 37.1 17 299 -26 -36 35 50 -37 15 21 -36 34 6 -37 17 6 0.68 34 0 0 -37 10 26 23 21 32.3 16 298 -26 -36 50 43 -37 30 13 -36 48 59 -37 31 58 0.68 35 0 0 -37 25 13 23 21 27.7 15 298 -25 -37 5 30 -37 45 0 -37 3 46 -37 46 45 0.68 36 0 0 -37 39 54 23 21 23.4 14 297 -25 -37 20 12 -37 59 41 -37 18 28 -38 1 26 0.68 37 0 0 -37 54 30 23 21 19.3 14 296 -24 -37 34 49 -38 14 17 -37 33 5 -38 16 2 0.68 38 0 0 -38 9 1 23 21 15.5 13 296 -24 -37 49 19 -38 28 47 -37 47 35 -38 30 32 0.68 39 0 0 -38 23 25 23 21 11.9 12 295 -23 -38 3 44 -38 43 10 -38 2 0 -38 44 55 0.68 40 0 0 -38 37 42 23 21 8.5 11 294 -23 -38 18 2 -38 57 28 -38 16 18 -38 59 12 0.68 41 0 0 -38 51 53 23 21 5.4 10 294 -22 -38 32 13 -39 11 38 -38 30 30 -39 13 23 0.68 42 0 0 -39 5 58 23 21 2.5 10 293 -21 -38 46 18 -39 25 42 -38 44 34 -39 27 26 0.69 43 0 0 -39 19 55 23 20 59.9 9 292 -21 -39 0 16 -39 39 38 -38 58 32 -39 41 22 0.69 44 0 0 -39 33 44 23 20 57.5 8 292 -20 -39 14 6 -39 53 27 -39 12 22 -39 55 11 0.69 45 0 0 -39 47 26 23 20 55.3 7 291 -20 -39 27 48 -40 7 8 -39 26 5 -40 8 53 0.69 46 0 0 -40 1 0 23 20 53.4 6 291 -19 -39 41 23 -40 20 42 -39 39 40 -40 22 26 0.69 47 0 0 -40 14 26 23 20 51.7 6 290 -18 -39 54 50 -40 34 7 -39 53 7 -40 35 51 0.70 48 0 0 -40 27 44 23 20 50.2 5 289 -18 -40 8 8 -40 47 24 -40 6 25 -40 49 8 0.70 49 0 0 -40 40 53 23 20 49.0 4 289 -17 -40 21 18 -41 0 32 -40 19 35 -41 2 16 0.71 50 0 0 -40 53 53 23 20 48.0 3 288 -16 -40 34 20 -41 13 32 -40 32 36 -41 15 16 0.72 51 0 0 -41 6 45 23 20 47.2 2 287 -16 -40 47 12 -41 26 22 -40 45 29 -41 28 6 0.73 52 0 0 -41 19 27 23 20 46.6 2 287 -15 -40 59 55 -41 39 3 -40 58 12 -41 40 47 0.76 53 0 0 -41 32 0 23 20 46.3 1 286 -15 -41 12 29 -41 51 35 -41 10 46 -41 53 19 0.84 54 0 0 -41 44 23 23 20 46.2 0 285 -14 -41 24 53 .. .. .. -41 23 10 .. .. .. 2.61 Uncertainty in time = +/- 1 secs Prediction of 2023 Nov 13.9 Data for the target star ------------------------ * name: TYC 0675-00413-1 * constellation : Taurus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 04 17 23.5788 DE: +11 18 13.660 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 04 17 23.5787 DE: +11 18 13.660 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.300,0.200) * V mag [mag]: 11.2 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (253) Mathilde asteroid class: approx. diameter [km]: 58 approx. diameter ["]: 0.046 distance from Earth [AU]: 1.72410 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#236 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): 0.007", 0.001", 82.506° remarks: * orbital elements for (253)Mathilde : Mean anomaly = 69.5327858677 deg Arg. of pericenter = 157.7689317447 deg Long. of node = 179.5188914005 deg Inclination = 6.7402226556 deg Eccentricity = 0.2641459094 Semimajor axis = 2.6482029189 AU Perihelion dist = 1.9486909506 AU Mag: H = 10.40, G = 0.15 Epoch of elements : MJD 60309.98222222 TDT (2023 Dec 31.9822) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#2362023Oct09,9.09,2023,12,31,23.578964,-0.090438,-0.536826,-3.545262,0.597239,0.003172,0.001393,0.000001,0.000000 -29.1354,11.3633,-172.91,-23.06,False TYC 0675-00413-1,4.28988300,11.3037945,0.00,11.23,0.00,0.0,0,,4.31220505,11.3632995,3.24,0.00,0,0,0 253,Mathilde,14.42,57.900,1.7241,0,0,-1.229,3.05,,0.6,0 0,69.3081,2023,12,31,157.7689,179.5189,6.7402,0.26415,2.64820,1.94869,10.41,5.0,0.15 1.044,0.0067,0.0006,83,0.0067,Known errors,-1.00,0,-1,-1 20231231_0413-1,60261.88 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Nov 13, 21:03 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org