IOTA/IOTA-ES occultation update for (1297) Quadea / UCAC4 572-026365 event on 2023 Feb 24, 11:54 UT Visible from Australia Summary ------- On 2023 Feb 24 UT, the 23.6 km diameter asteroid (1297) Quadea will occult a 11.0 mag star in the constellation Gemini for observers along a path across Australia. In the case of an occultation, the combined light of the asteroid and the star will drop by 4.96 mag to 15.96 mag (the magnitude of the asteroid) for at most 5.680 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: 68 * date and approx. time of event: 2023 Feb 24, 11:29 - 2023 Feb 24, 12:18 * geocentric midpoint of event [JD]: 2459999.99589883 * magnitude of target star: 11.01 * magnitude drop [mag]: 4.96 * estimated maximum duration [s]: 5.680 * Moon: 23 % sunlit, 61° distance * Sun: 118° distance * rough path description: Australia The occultation path -------------------- * approximate projected width [km]: 25 * 1 sigma uncertainty interval [path widths]: +/- 0.87 * 1 sigma uncertainty interval [seconds]: +/- 5.9 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.019, +/- 0.004) * 1 sigma uncertainty ellipse (major, minor, PA): (0.019", 0.001", 101°) * approx speed of asteroid's shadow [km/s]: 4.1577 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 572-026365 by 1297 Quadea on 2023 Feb 24 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 22 0 0 31 21 5 11 29 35.7 0 61 48 31 13 36 31 28 34 31 0 34 31 41 35 .... 23 0 0 31 48 30 11 29 36.2 1 62 47 31 41 4 31 55 56 31 28 7 32 8 51 0.07 24 0 0 32 14 54 11 29 37.1 2 62 47 32 7 31 32 22 17 31 54 40 32 35 7 0.15 25 0 0 32 40 19 11 29 38.4 3 63 46 32 32 59 32 47 39 32 20 12 33 0 24 0.18 26 0 0 33 4 44 11 29 40.1 4 64 45 32 57 27 33 12 2 32 44 45 33 24 42 0.20 27 0 0 33 28 12 11 29 42.3 5 64 45 33 20 57 33 35 26 33 8 20 33 48 2 0.21 28 0 0 33 50 42 11 29 44.8 6 65 44 33 43 30 33 57 54 33 30 58 34 10 25 0.22 29 0 0 34 12 17 11 29 47.8 7 65 43 34 5 7 34 19 26 33 52 39 34 31 53 0.23 30 0 0 34 32 56 11 29 51.0 8 66 43 34 25 48 34 40 2 34 13 24 34 52 25 0.23 31 0 0 34 52 40 11 29 54.7 9 66 42 34 45 35 34 59 44 34 33 15 35 12 3 0.24 32 0 0 35 11 30 11 29 58.7 10 67 41 35 4 27 35 18 32 34 52 11 35 30 47 0.24 33 0 0 35 29 27 11 30 3.1 11 68 41 35 22 27 35 36 28 35 10 14 35 48 38 0.25 34 0 0 35 46 32 11 30 7.8 11 68 40 35 39 33 35 53 30 35 27 25 36 5 37 0.25 35 0 0 36 2 45 11 30 12.8 12 69 39 35 55 48 36 9 41 35 43 43 36 21 45 0.25 36 0 0 36 18 7 11 30 18.1 13 69 39 36 11 12 36 25 1 35 59 9 36 37 2 0.26 37 0 0 36 32 38 11 30 23.8 14 70 38 36 25 45 36 39 31 36 13 45 36 51 29 0.26 38 0 0 36 46 19 11 30 29.8 15 70 37 36 39 28 36 53 10 36 27 31 37 5 5 0.26 39 0 0 36 59 11 11 30 36.1 16 71 37 36 52 21 37 6 1 36 40 27 37 17 53 0.26 40 0 0 37 11 14 11 30 42.7 17 72 36 37 4 26 37 18 2 36 52 34 37 29 52 0.27 41 0 0 37 22 29 11 30 49.5 17 72 35 37 15 42 37 29 16 37 3 52 37 41 3 0.27 42 0 0 37 32 55 11 30 56.7 18 73 35 37 26 9 37 39 41 37 14 22 37 51 26 0.27 43 0 0 37 42 34 11 31 4.2 19 73 34 37 35 49 37 49 19 37 24 5 38 1 2 0.27 44 0 0 37 51 26 11 31 11.9 20 74 33 37 44 42 37 58 10 37 32 59 38 9 51 0.27 45 0 0 37 59 31 11 31 20.0 21 75 33 37 52 48 38 6 14 37 41 7 38 17 54 0.28 46 0 0 38 6 49 11 31 28.3 21 75 32 38 0 7 38 13 31 37 48 27 38 25 9 0.28 47 0 0 38 13 21 11 31 36.9 22 76 31 38 6 40 38 20 2 37 55 1 38 31 39 0.28 48 0 0 38 19 6 11 31 45.8 23 76 31 38 12 26 38 25 47 38 0 48 38 37 23 0.28 49 0 0 38 24 6 11 31 54.9 24 77 30 38 17 26 38 30 46 38 5 49 38 42 21 0.28 50 0 0 38 28 19 11 32 4.4 25 78 30 38 21 40 38 34 59 38 10 4 38 46 33 0.29 51 0 0 38 31 47 11 32 14.1 26 78 29 38 25 8 38 38 26 38 13 32 38 50 0 0.29 52 0 0 38 34 29 11 32 24.2 26 79 28 38 27 50 38 41 8 38 16 15 38 52 42 0.29 53 0 0 38 36 25 11 32 34.5 27 79 28 38 29 46 38 43 4 38 18 12 38 54 37 0.29 54 0 0 38 37 36 11 32 45.1 28 80 27 38 30 57 38 44 14 38 19 22 38 55 48 0.29 55 0 0 38 38 0 11 32 55.9 29 81 26 38 31 21 38 44 39 38 19 46 38 56 12 0.29 56 0 0 38 37 38 11 33 7.1 30 81 26 38 30 59 38 44 17 38 19 24 38 55 51 0.30 57 0 0 38 36 30 11 33 18.6 30 82 25 38 29 51 38 43 10 38 18 15 38 54 44 0.30 58 0 0 38 34 36 11 33 30.4 31 82 24 38 27 56 38 41 16 38 16 19 38 52 51 0.30 59 0 0 38 31 55 11 33 42.5 32 83 24 38 25 14 38 38 35 38 13 37 38 50 11 0.30 60 0 0 38 28 26 11 33 54.9 33 83 23 38 21 45 38 35 7 38 10 7 38 46 44 0.30 61 0 0 38 24 10 11 34 7.6 34 84 23 38 17 29 38 30 52 38 5 49 38 42 30 0.30 62 0 0 38 19 7 11 34 20.7 34 84 22 38 12 24 38 25 49 38 0 43 38 37 29 0.30 63 0 0 38 13 15 11 34 34.0 35 85 21 38 6 31 38 19 58 37 54 48 38 31 39 0.30 64 0 0 38 6 34 11 34 47.7 36 85 21 37 59 49 38 13 18 37 48 4 38 25 1 0.31 65 0 0 37 59 3 11 35 1.8 37 86 20 37 52 17 38 5 49 37 40 30 38 17 34 0.31 66 0 0 37 50 42 11 35 16.2 38 86 19 37 43 55 37 57 29 37 32 6 38 9 17 0.31 67 0 0 37 41 31 11 35 31.0 39 87 19 37 34 42 37 48 19 37 22 50 38 0 9 0.31 68 0 0 37 31 27 11 35 46.1 39 87 18 37 24 37 37 38 17 37 12 42 37 50 10 0.31 69 0 0 37 20 32 11 36 1.6 40 88 17 37 13 39 37 27 23 37 1 42 37 39 19 0.31 70 0 0 37 8 43 11 36 17.5 41 88 17 37 1 49 37 15 36 36 49 48 37 27 35 0.31 71 0 0 36 55 59 11 36 33.8 42 89 16 36 49 3 37 2 55 36 36 59 37 14 57 0.31 72 0 0 36 42 20 11 36 50.5 43 89 15 36 35 22 36 49 18 36 23 14 37 1 24 0.31 73 0 0 36 27 45 11 37 7.7 44 90 15 36 20 45 36 34 45 36 8 32 36 46 55 0.32 74 0 0 36 12 12 11 37 25.2 45 90 14 36 5 9 36 19 14 35 52 53 36 31 29 0.32 75 0 0 35 55 40 11 37 43.3 45 90 13 35 48 34 36 2 45 35 36 13 36 15 4 0.32 76 0 0 35 38 7 11 38 1.8 46 91 12 35 30 59 35 45 15 35 18 34 35 57 39 0.32 77 0 0 35 19 33 11 38 20.7 47 91 12 35 12 22 35 26 44 34 59 51 35 39 13 0.32 78 0 0 34 59 56 11 38 40.2 48 91 11 34 52 42 35 7 10 34 40 5 35 19 44 0.32 79 0 0 34 39 13 11 39 0.2 49 92 10 34 31 56 34 46 30 34 19 14 34 59 10 0.32 80 0 0 34 17 24 11 39 20.7 50 92 10 34 10 3 34 24 45 33 57 16 34 37 30 0.32 81 0 0 33 54 27 11 39 41.8 51 92 9 33 47 2 34 1 51 33 34 8 34 14 43 0.32 82 0 0 33 30 19 11 40 3.4 52 92 8 33 22 51 33 37 47 33 9 50 33 50 45 0.32 83 0 0 33 4 58 11 40 25.6 53 92 7 32 57 26 33 12 30 32 44 18 33 25 36 0.32 84 0 0 32 38 23 11 40 48.5 54 92 7 32 30 47 32 46 0 32 17 32 32 59 12 0.32 85 0 0 32 10 32 11 41 11.9 54 92 6 32 2 51 32 18 12 31 49 27 32 31 33 0.32 86 0 0 31 41 21 11 41 36.0 55 92 5 31 33 35 31 49 6 31 20 4 32 2 34 0.32 87 0 0 31 10 48 11 42 0.8 56 92 4 31 2 57 31 18 38 30 49 17 31 32 15 0.32 88 0 0 30 38 50 11 42 26.3 57 92 3 30 30 55 30 46 46 30 17 6 31 0 32 0.32 89 0 0 30 5 26 11 42 52.5 58 92 3 29 57 25 30 13 27 29 43 26 30 27 22 0.32 90 0 0 29 30 32 11 43 19.4 59 91 2 29 22 25 29 38 38 29 8 16 29 52 43 0.32 91 0 0 28 54 4 11 43 47.2 60 91 1 28 45 51 29 2 16 28 31 32 29 16 31 0.32 92 0 0 28 16 0 11 44 15.7 61 90 0 28 7 41 28 24 18 27 53 11 28 38 44 0.32 93 0 0 27 36 16 11 44 45.0 62 89 -1 27 27 51 27 44 41 27 13 10 27 59 18 0.32 94 0 0 26 54 49 11 45 15.2 63 89 -2 26 46 17 27 3 21 26 31 24 27 18 10 0.32 95 0 0 26 11 36 11 45 46.3 64 87 -2 26 2 56 26 20 14 25 47 51 26 35 16 0.32 96 0 0 25 26 32 11 46 18.3 65 86 -3 25 17 45 25 35 18 25 2 27 25 50 32 0.32 97 0 0 24 39 34 11 46 51.2 66 85 -4 24 30 39 24 48 28 24 15 8 25 3 55 0.32 98 0 0 23 50 38 11 47 25.1 67 83 -5 23 41 35 23 59 39 23 25 49 24 15 21 0.32 99 0 0 22 59 39 11 48 0.0 68 81 -6 22 50 28 23 8 49 22 34 27 23 24 45 0.32 100 0 0 22 6 34 11 48 35.9 69 79 -7 21 57 14 22 15 53 21 40 58 22 32 4 0.31 101 0 0 21 11 19 11 49 12.8 70 76 -8 21 1 50 21 20 47 20 45 18 21 37 14 0.31 102 0 0 20 13 49 11 49 50.8 71 73 -9 20 4 10 20 23 26 19 47 21 20 40 9 0.31 103 0 0 19 14 0 11 50 29.8 71 70 -10 19 4 11 19 23 47 18 47 5 19 40 47 0.31 104 0 0 18 11 48 11 51 9.9 72 66 -11 18 1 49 18 21 46 17 44 25 18 39 4 0.31 105 0 0 17 7 9 11 51 51.1 73 62 -12 16 57 0 17 17 18 16 39 18 17 34 54 0.31 106 0 0 16 0 0 11 52 33.4 73 57 -13 15 49 40 16 10 19 15 31 38 16 28 15 0.30 107 0 0 14 50 17 11 53 16.8 73 52 -14 14 39 46 15 0 48 14 21 24 15 19 2 0.30 108 0 0 13 37 57 11 54 1.3 73 47 -15 13 27 14 13 48 39 13 8 33 14 7 14 0.30 109 0 0 12 22 58 11 54 46.8 73 42 -16 12 12 3 12 33 52 11 53 0 12 52 47 0.29 110 0 0 11 5 17 11 55 33.3 73 36 -17 10 54 10 11 16 23 10 34 46 11 35 39 0.29 111 0 0 9 44 53 11 56 20.7 73 31 -18 9 33 34 9 56 11 9 13 49 10 15 49 0.29 112 0 0 8 21 47 11 57 9.1 72 26 -19 8 10 15 8 33 18 7 50 8 8 53 16 0.29 113 0 0 6 55 59 11 57 58.3 71 21 -20 6 44 14 7 7 42 6 23 45 7 28 2 0.28 114 0 0 5 27 30 11 58 48.2 70 17 -21 5 15 33 5 39 26 4 54 42 6 0 8 0.28 115 0 0 3 56 25 11 59 38.8 69 12 -22 3 44 16 4 8 34 3 23 3 4 29 38 0.27 116 0 0 2 22 49 12 0 29.9 68 9 -23 2 10 27 2 35 10 1 48 53 2 56 35 0.27 117 0 0 0 46 48 12 1 21.3 66 6 -24 0 34 14 0 59 20 0 12 18 1 21 7 0.27 118 0 0 - 0 51 30 12 2 12.9 65 3 -25 - 1 4 16 - 0 38 46 - 1 26 31 - 0 16 39 0.26 119 0 0 - 2 31 54 12 3 4.5 63 0 -26 - 2 44 51 - 2 18 59 - 3 7 26 - 1 56 33 0.26 120 0 0 - 4 14 13 12 3 56.0 61 358 -26 - 4 27 20 - 4 1 7 - 4 50 13 - 3 38 23 0.26 121 0 0 - 5 58 12 12 4 47.1 60 356 -27 - 6 11 29 - 5 44 56 - 6 34 39 - 5 21 55 0.25 122 0 0 - 7 43 35 12 5 37.6 58 354 -28 - 7 57 2 - 7 30 11 - 8 20 28 - 7 6 54 0.25 123 0 0 - 9 30 8 12 6 27.4 56 352 -29 - 9 43 42 - 9 16 35 -10 7 22 - 8 53 5 0.25 124 0 0 -11 17 30 12 7 16.1 54 351 -29 -11 31 11 -11 3 50 -11 55 3 -10 40 8 0.24 125 0 0 -13 5 23 12 8 3.7 52 349 -30 -13 19 10 -12 51 38 -13 43 12 -12 27 45 0.24 126 0 0 -14 53 28 12 8 49.9 50 348 -30 -15 7 20 -14 39 38 -15 31 30 -14 15 38 0.24 127 0 0 -16 41 26 12 9 34.5 48 347 -31 -16 55 20 -16 27 32 -17 19 36 -16 3 25 0.24 128 0 0 -18 28 55 12 10 17.5 46 346 -31 -18 42 53 -18 15 0 -19 7 13 -17 50 49 0.23 129 0 0 -20 15 39 12 10 58.5 44 345 -31 -20 29 37 -20 1 42 -20 53 59 -19 37 30 0.23 130 0 0 -22 1 19 12 11 37.7 42 344 -31 -22 15 17 -21 47 22 -22 39 39 -21 23 10 0.23 131 0 0 -23 45 38 12 12 14.8 40 343 -32 -23 59 35 -23 31 43 -24 23 55 -23 7 32 0.23 132 0 0 -25 28 22 12 12 49.9 38 342 -32 -25 42 16 -25 14 28 -26 6 32 -24 50 21 0.23 133 0 0 -27 9 15 12 13 22.8 36 341 -32 -27 23 7 -26 55 25 -27 47 16 -26 31 24 0.23 134 0 0 -28 48 7 12 13 53.6 34 340 -32 -29 1 55 -28 34 21 -29 25 57 -28 10 27 0.23 135 0 0 -30 24 48 12 14 22.4 32 340 -32 -30 38 30 -30 11 7 -31 2 24 -29 47 21 0.22 136 0 0 -31 59 8 12 14 49.0 31 339 -31 -32 12 44 -31 45 32 -32 36 28 -31 21 56 0.22 137 0 0 -33 31 0 12 15 13.7 29 338 -31 -33 44 31 -33 17 31 -34 8 3 -32 54 6 0.22 138 0 0 -35 0 21 12 15 36.4 27 337 -31 -35 13 44 -34 46 58 -35 37 5 -34 23 46 0.22 139 0 0 -36 27 5 12 15 57.2 25 337 -31 -36 40 20 -36 13 50 -37 3 28 -35 50 50 0.22 140 0 0 -37 51 10 12 16 16.2 24 336 -30 -38 4 18 -37 38 3 -38 27 12 -37 15 16 0.23 141 0 0 -39 12 34 12 16 33.5 22 335 -30 -39 25 34 -38 59 36 -39 48 14 -38 37 3 0.23 142 0 0 -40 31 19 12 16 49.3 21 334 -30 -40 44 10 -40 18 28 -41 6 35 -39 56 11 0.23 143 0 0 -41 47 23 12 17 3.4 19 334 -29 -42 0 6 -41 34 42 -42 22 16 -41 12 39 0.23 144 0 0 -43 0 50 12 17 16.2 18 333 -29 -43 13 24 -42 48 17 -43 35 18 -42 26 30 0.23 145 0 0 -44 11 40 12 17 27.6 16 332 -28 -44 24 5 -43 59 16 -44 45 44 -43 37 45 0.23 146 0 0 -45 19 57 12 17 37.8 15 331 -28 -45 32 13 -45 7 42 -45 53 35 -44 46 26 0.23 147 0 0 -46 25 44 12 17 46.8 14 330 -27 -46 37 50 -46 13 38 -46 58 57 -45 52 38 0.23 148 0 0 -47 29 4 12 17 54.8 12 330 -27 -47 41 1 -47 17 7 -48 1 52 -46 56 23 0.23 149 0 0 -48 30 1 12 18 1.7 11 329 -26 -48 41 49 -48 18 14 -49 2 23 -47 57 45 0.23 150 0 0 -49 28 39 12 18 7.8 10 328 -26 -49 40 18 -49 17 1 -50 0 37 -48 56 49 0.23 151 0 0 -50 25 3 12 18 13.0 9 327 -26 -50 36 33 -50 13 34 -50 56 35 -49 53 37 0.23 152 0 0 -51 19 16 12 18 17.4 8 327 -25 -51 30 37 -51 7 56 -51 50 24 -50 48 16 0.24 153 0 0 -52 11 24 12 18 21.2 7 326 -25 -52 22 36 -52 0 13 -52 42 7 -51 40 48 0.24 154 0 0 -53 1 30 12 18 24.2 6 325 -24 -53 12 33 -52 50 28 -53 31 49 -52 31 18 0.24 155 0 0 -53 49 39 12 18 26.7 5 324 -24 -54 0 33 -53 38 45 -54 19 33 -53 19 50 0.23 156 0 0 -54 35 54 12 18 28.6 4 323 -23 -54 46 40 -54 25 9 -55 5 26 -54 6 29 0.23 157 0 0 -55 20 21 12 18 30.1 3 322 -23 -55 30 59 -55 9 45 -55 49 29 -54 51 20 0.23 158 0 0 -56 3 4 12 18 31.0 2 322 -22 -56 13 33 -55 52 36 -56 31 49 -55 34 25 0.22 159 0 0 -56 44 6 12 18 31.6 1 321 -22 -56 54 27 -56 33 46 -57 12 29 -56 15 49 0.20 160 0 0 -57 23 32 12 18 31.8 0 320 -22 -57 33 44 -57 13 20 .. .. .. -56 55 37 -0.10 Uncertainty in time = +/- 8 secs Prediction of 2023 Feb 15.9 Data for the target star ------------------------ * name: UCAC4 572-026365 * constellation : Gemini * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 06 14 09.8112 DE: +24 23 19.192 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 06 14 09.8112 DE: +24 23 19.192 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 11.0 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (1297) Quadea asteroid class: approx. diameter [km]: 24 approx. diameter ["]: 0.014 distance from Earth [AU]: 2.28210 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#51 date of fit: 2023 Feb 07 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): 0.019", 0.001", 101.132° remarks: * orbital elements for (1297)Quadea : Mean anomaly = 43.9016065264 deg Arg. of pericenter = 125.4257665072 deg Long. of node = 295.8386611929 deg Inclination = 8.9965724258 deg Eccentricity = 0.0670861905 Semimajor axis = 3.0205496249 AU Perihelion dist = 2.8179124575 AU Mag: H = 10.93, G = 0.15 Epoch of elements : MJD 59999.49583333 TDT (2023 Feb 24.4958) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#512023Feb07,5.68,2023,2,24,11.901572,-0.221609,-0.179479,1.477534,-1.823157,0.005242,-0.000189,0.000001,0.000000 121.2697,24.3825,4.78,-9.46,False UCAC4 572-026365,6.23605868,24.3886644,0.00,11.01,0.00,0.0,0,,6.25973608,24.3825357,4.96,0.00,0,0,0 1297,Quadea,15.96,23.6,2.2821,0,0,0.417,-7.03,,1.2,0 0,43.8085,2023,2,24,125.4258,295.8387,8.9966,0.06709,3.02055,2.81791,10.95,5.0,0.15 1.870,0.0193,0.0008,101,0.0124,Known errors,-1.00,-1,-1,-1 20230224_026365,59990.86 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Feb 15, 20:40 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org