IOTA/IOTA-ES occultation update for (136) Austria / TYC 42-00928-1 event on 2024 Nov 20, 18:53 UT Visible from Summary ------- On 2024 Nov 20 UT, the 37.4998290728518 km diameter asteroid (136) Austria will occult a 9.6 mag star in the constellation Cetus for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 3.23 mag to 12.80 mag (the magnitude of the asteroid) for at most 4.720 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 Nov 20, 18:47 - 2024 Nov 20, 18:59 * geocentric midpoint of event [JD]: 2460635.28699558 * magnitude of target star: 9.63 * magnitude drop [mag]: 3.23 * estimated maximum duration [s]: 4.720 * Moon: 72 % sunlit, 88° distance * Sun: 155° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 89 * 1 sigma uncertainty interval [path widths]: +/- 0.23 * 1 sigma uncertainty interval [seconds]: +/- 3.1 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.027, +/- 0.006) * 1 sigma uncertainty ellipse (major, minor, PA): (0.027", 0.005", 82°) * approx speed of asteroid's shadow [km/s]: 7.9633 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 42-00928-1 by 136 Austria on 2024 Nov 20 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 ' " Longitude Longitude Longitude Longitude 61 11 27 -86 0 0 18 58 47.0 0 351 16 55 21 27 67 12 45 52 42 53 70 4 21 .... 59 40 37 -85 0 0 18 58 46.5 1 352 15 55 1 22 64 26 18 52 54 23 66 40 39 -1.35 59 2 32 -84 0 0 18 58 45.5 2 353 14 55 9 45 62 59 35 53 23 40 64 50 31 -1.72 58 54 29 -83 0 0 18 58 43.8 3 353 13 55 34 32 62 17 32 54 3 19 63 52 16 -1.87 59 5 14 -82 0 0 18 58 41.6 4 353 12 56 9 43 62 3 9 54 49 35 63 26 1 1.95 59 28 37 -81 0 0 18 58 38.7 5 352 11 56 51 58 62 7 13 55 40 24 63 21 0 2.00 60 1 0 -80 0 0 18 58 35.3 6 352 10 57 39 21 62 24 19 56 34 37 63 30 55 2.04 60 40 4 -79 0 0 18 58 31.3 7 351 9 58 30 35 62 50 59 57 31 25 63 51 48 2.06 61 24 18 -78 0 0 18 58 26.7 8 350 8 59 24 54 63 24 59 58 30 18 64 21 1 2.08 62 12 40 -77 0 0 18 58 21.6 9 350 7 60 21 43 64 4 47 59 30 59 64 56 48 2.10 63 4 26 -76 0 0 18 58 15.8 10 349 6 61 20 38 64 49 16 60 33 11 65 37 55 2.11 63 59 5 -75 0 0 18 58 9.4 11 348 5 62 21 28 65 37 41 61 36 50 66 23 26 2.13 64 56 16 -74 0 0 18 58 2.5 12 347 4 63 23 59 66 29 29 62 41 47 67 12 43 2.14 65 55 41 -73 0 0 18 57 55.0 13 346 3 64 28 3 67 24 12 63 47 58 68 5 15 2.14 66 57 8 -72 0 0 18 57 46.8 14 345 2 65 33 34 68 21 33 64 55 21 69 0 42 2.15 68 0 29 -71 0 0 18 57 38.1 15 344 1 66 40 30 69 21 17 66 3 55 69 58 46 2.16 69 5 40 -70 0 0 18 57 28.8 16 342 0 67 48 50 70 23 16 67 13 43 70 59 16 2.16 70 12 34 -69 0 0 18 57 18.9 16 341 -1 68 58 32 71 27 20 68 24 42 72 2 2 2.17 71 21 10 -68 0 0 18 57 8.4 17 340 -2 70 9 38 72 33 26 69 36 56 73 6 58 2.17 72 31 27 -67 0 0 18 56 57.3 18 339 -3 71 22 8 73 41 31 70 50 27 74 14 1 2.18 73 43 27 -66 0 0 18 56 45.7 19 337 -4 72 36 5 74 51 32 72 5 18 75 23 8 2.18 74 57 9 -65 0 0 18 56 33.4 19 336 -5 73 51 31 76 3 29 73 21 32 76 34 17 2.18 76 12 35 -64 0 0 18 56 20.5 20 335 -6 75 8 29 77 17 25 74 39 12 77 47 30 2.18 77 29 51 -63 0 0 18 56 7.1 21 333 -7 76 27 5 78 33 20 75 58 25 79 2 49 2.18 78 49 0 -62 0 0 18 55 53.0 21 332 -8 77 47 24 79 51 20 77 19 16 80 20 17 2.19 80 10 7 -61 0 0 18 55 38.4 22 330 -9 79 9 30 81 11 28 78 41 50 81 39 58 2.19 81 33 19 -60 0 0 18 55 23.2 23 329 -10 80 33 32 82 33 51 80 6 16 83 1 59 2.19 82 58 45 -59 0 0 18 55 7.3 23 327 -11 81 59 38 83 58 38 81 32 41 84 26 28 2.19 84 26 33 -58 0 0 18 54 50.9 23 325 -12 83 27 58 85 25 55 83 1 15 85 53 32 2.19 85 56 52 -57 0 0 18 54 33.8 24 323 -12 84 58 40 86 55 55 84 32 8 87 23 23 2.19 87 29 57 -56 0 0 18 54 16.2 24 322 -13 86 31 57 88 28 49 86 5 31 88 56 13 2.19 89 6 1 -55 0 0 18 53 57.9 24 320 -14 88 8 4 90 4 54 87 41 40 90 32 19 2.19 90 45 23 -54 0 0 18 53 39.1 24 318 -15 89 47 17 91 44 27 89 20 51 92 11 59 2.19 92 28 23 -53 0 0 18 53 19.6 25 316 -15 91 29 57 93 27 50 91 3 23 93 55 35 2.19 94 15 25 -52 0 0 18 52 59.4 25 314 -16 93 16 26 95 15 31 92 49 38 95 43 35 2.19 96 7 1 -51 0 0 18 52 38.7 24 312 -16 95 7 13 97 8 2 94 40 5 97 36 33 2.19 98 3 48 -50 0 0 18 52 17.2 24 310 -17 97 2 54 99 6 3 96 35 18 99 35 12 2.19 100 6 33 -49 0 0 18 51 55.1 24 308 -17 99 4 11 101 10 28 98 35 57 101 40 27 2.19 Latitude Latitude Latitude Latitude 101 0 0 -48 34 52 18 51 45.6 24 307 -17 -48 5 30 -49 4 55 -47 52 12 -49 19 0 2.18 102 0 0 -48 7 21 18 51 35.1 23 306 -17 -47 38 20 -48 37 2 -47 25 12 -48 50 57 2.18 103 0 0 -47 40 36 18 51 24.8 23 305 -18 -47 11 55 -48 9 56 -46 58 55 -48 23 40 2.18 104 0 0 -47 14 36 18 51 14.5 23 304 -18 -46 46 14 -47 43 36 -46 33 22 -47 57 10 2.18 105 0 0 -46 49 21 18 51 4.5 22 303 -18 -46 21 17 -47 18 2 -46 8 33 -47 31 27 2.18 106 0 0 -46 24 52 18 50 54.6 22 302 -18 -45 57 4 -46 53 14 -45 44 28 -47 6 30 2.18 107 0 0 -46 1 8 18 50 44.8 22 301 -18 -45 33 36 -46 29 13 -45 21 7 -46 42 21 2.18 108 0 0 -45 38 9 18 50 35.3 21 300 -18 -45 10 53 -46 5 58 -44 58 30 -46 18 58 2.18 109 0 0 -45 15 56 18 50 25.9 21 299 -18 -44 48 54 -45 43 29 -44 36 38 -45 56 22 2.18 110 0 0 -44 54 28 18 50 16.8 21 298 -17 -44 27 40 -45 21 47 -44 15 30 -45 34 33 2.19 111 0 0 -44 33 45 18 50 7.8 20 297 -17 -44 7 10 -45 0 51 -43 55 6 -45 13 30 2.19 112 0 0 -44 13 49 18 49 59.1 20 296 -17 -43 47 26 -44 40 41 -43 35 27 -44 53 14 2.19 113 0 0 -43 54 38 18 49 50.5 19 295 -17 -43 28 27 -44 21 18 -43 16 33 -44 33 45 2.19 114 0 0 -43 36 12 18 49 42.2 19 294 -17 -43 10 12 -44 2 41 -42 58 23 -44 15 2 2.19 115 0 0 -43 18 33 18 49 34.1 18 293 -17 -42 52 43 -43 44 51 -42 40 59 -43 57 7 2.19 116 0 0 -43 1 40 18 49 26.3 18 293 -16 -42 35 59 -43 27 47 -42 24 19 -43 39 58 2.19 117 0 0 -42 45 32 18 49 18.7 17 292 -16 -42 20 1 -43 11 30 -42 8 25 -43 23 37 2.20 118 0 0 -42 30 11 18 49 11.4 16 291 -16 -42 4 48 -42 56 0 -41 53 16 -43 8 2 2.20 119 0 0 -42 15 36 18 49 4.3 16 290 -15 -41 50 21 -42 41 16 -41 38 52 -42 53 15 2.20 120 0 0 -42 1 47 18 48 57.4 15 289 -15 -41 36 40 -42 27 20 -41 25 14 -42 39 14 2.20 121 0 0 -41 48 45 18 48 50.9 15 289 -15 -41 23 44 -42 14 10 -41 12 22 -42 26 1 2.21 122 0 0 -41 36 29 18 48 44.6 14 288 -14 -41 11 35 -42 1 48 -41 0 15 -42 13 36 2.21 123 0 0 -41 25 0 18 48 38.6 13 287 -14 -41 0 12 -41 50 13 -40 48 54 -42 1 58 2.22 124 0 0 -41 14 18 18 48 32.8 13 286 -14 -40 49 35 -41 39 25 -40 38 20 -41 51 7 2.22 125 0 0 -41 4 22 18 48 27.4 12 286 -13 -40 39 44 -41 29 24 -40 28 31 -41 41 4 2.23 126 0 0 -40 55 14 18 48 22.2 11 285 -13 -40 30 40 -41 20 12 -40 19 29 -41 31 49 2.23 127 0 0 -40 46 53 18 48 17.3 11 284 -12 -40 22 23 -41 11 47 -40 11 14 -41 23 22 2.24 128 0 0 -40 39 19 18 48 12.7 10 284 -12 -40 14 53 -41 4 9 -40 3 45 -41 15 43 2.24 129 0 0 -40 32 33 18 48 8.5 9 283 -11 -40 8 9 -40 57 20 -39 57 3 -41 8 53 2.25 130 0 0 -40 26 35 18 48 4.5 9 282 -11 -40 2 13 -40 51 19 -39 51 8 -41 2 51 2.26 131 0 0 -40 21 24 18 48 0.9 8 282 -10 -39 57 4 -40 46 6 -39 46 0 -40 57 37 2.27 132 0 0 -40 17 1 18 47 57.5 7 281 -10 -39 52 43 -40 41 42 -39 41 39 -40 53 12 2.28 133 0 0 -40 13 27 18 47 54.5 6 280 -9 -39 49 10 -40 38 6 -39 38 6 -40 49 36 2.30 134 0 0 -40 10 41 18 47 51.8 6 280 -8 -39 46 24 -40 35 20 -39 35 21 -40 46 49 2.32 135 0 0 -40 8 43 18 47 49.4 5 279 -8 -39 44 27 -40 33 22 -39 33 24 -40 44 51 2.34 136 0 0 -40 7 34 18 47 47.4 4 278 -7 -39 43 17 -40 32 14 -39 32 14 -40 43 43 2.37 137 0 0 -40 7 14 18 47 45.7 3 278 -7 -39 42 57 -40 31 55 -39 31 53 -40 43 24 2.41 138 0 0 -40 7 43 18 47 44.3 3 277 -6 -39 43 25 -40 32 25 -39 32 20 -40 43 55 2.48 139 0 0 -40 9 2 18 47 43.3 2 276 -5 -39 44 41 -40 33 46 -39 33 37 -40 45 17 2.59 140 0 0 -40 11 10 18 47 42.6 1 276 -5 -39 46 47 -40 35 56 -39 35 41 -40 47 29 2.85 141 0 0 -40 14 8 18 47 42.2 0 275 -4 -39 49 43 -40 38 57 -39 38 36 -40 50 31 3.99 Uncertainty in time = +/- 3 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: TYC 42-00928-1 * constellation : Cetus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 02 26 03.5291 DE: +03 31 55.738 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 02 26 03.5291 DE: +03 31 55.738 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 9.6 * B mag [mag]: 10.2 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (136) Austria asteroid class: approx. diameter [km]: 37 approx. diameter ["]: 0.039 distance from Earth [AU]: 1.32600 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#90 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): 0.027", 0.005", 81.705° remarks: * orbital elements for (136)Austria : Mean anomaly = 76.7745715560 deg Arg. of pericenter = 132.9851682397 deg Long. of node = 186.3957092055 deg Inclination = 9.5793407917 deg Eccentricity = 0.0843870758 Semimajor axis = 2.2871864017 AU Perihelion dist = 2.0941774295 AU Mag: H = 9.74, G = 0.15 Epoch of elements : MJD 60634.78699362 TDT (2024 Nov 20.7870) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#902023Apr24,4.72,2024,11,20,18.887894,0.385058,-0.821414,-4.069791,-1.907636,0.001778,0.001592,0.000001,0.000000 53.2473,3.6459,-106.87,-19.92,False TYC 42-00928-1,2.43431366,3.5321495,10.23,9.63,9.31,0.1,0,,2.45621672,3.6458562,3.23,3.11,0,0,0 136,Austria,12.80,37.596,1.3260,0,0,-1.802,-12.64,,2.0,0 0,76.5503,2024,11,20,132.9852,186.3957,9.5793,0.08439,2.28719,2.09418,9.74,5.0,0.15 1.230,0.0270,0.0047,82,0.0090,Known errors,1.14,0,-1,-1 20241120_0928-1,60140.71 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 16:58 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org