IOTA/IOTA-ES occultation update for (623) Chimaera / HIP 86535 event on 2024 Feb 21, 17:11 UT Visible from Summary ------- On 2024 Feb 21 UT, the 43.7916525513663 km diameter asteroid (623) Chimaera will occult a 8.4 mag star in the constellation Scorpius for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 7.94 mag to 16.31 mag (the magnitude of the asteroid) for at most 1.560 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 Feb 21, 17:08 - 2024 Feb 21, 17:15 * geocentric midpoint of event [JD]: 2460362.21661400 * magnitude of target star: 8.37 * magnitude drop [mag]: 7.94 * estimated maximum duration [s]: 1.560 * Moon: 93 % sunlit, 144° distance * Sun: 67° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 46 * 1 sigma uncertainty interval [path widths]: +/- 0.15 * 1 sigma uncertainty interval [seconds]: +/- 0.6 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.008, +/- 0.003) * 1 sigma uncertainty ellipse (major, minor, PA): (0.008", 0.003", 84°) * approx speed of asteroid's shadow [km/s]: 28.2391 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of HIP 86535 by 623 Chimaera on 2024 Feb 21 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 122 0 0 - 9 4 47 17 8 19.9 1 125 -65 - 9 20 12 - 8 49 24 - 9 24 50 - 8 44 47 .... 123 0 0 - 9 47 29 17 8 20.0 2 125 -64 -10 2 56 - 9 32 4 -10 7 35 - 9 27 25 0.32 124 0 0 -10 30 26 17 8 20.2 3 125 -63 -10 45 55 -10 14 58 -10 50 35 -10 10 19 0.32 125 0 0 -11 13 36 17 8 20.6 4 125 -61 -11 29 8 -10 58 6 -11 33 49 -10 53 26 0.32 126 0 0 -11 56 58 17 8 21.0 6 125 -60 -12 12 32 -11 41 26 -12 17 14 -11 36 46 0.32 127 0 0 -12 40 31 17 8 21.6 7 124 -59 -12 56 7 -12 24 56 -13 0 49 -12 20 15 0.32 128 0 0 -13 24 12 17 8 22.2 8 124 -58 -13 39 50 -13 8 36 -13 44 33 -13 3 54 0.32 129 0 0 -14 8 0 17 8 23.0 9 124 -57 -14 23 40 -13 52 22 -14 28 23 -13 47 40 0.32 130 0 0 -14 51 54 17 8 23.8 10 124 -55 -15 7 35 -14 36 14 -15 12 19 -14 31 31 0.32 131 0 0 -15 35 51 17 8 24.8 12 123 -54 -15 51 34 -15 20 9 -15 56 18 -15 15 26 0.32 132 0 0 -16 19 49 17 8 25.9 13 123 -53 -16 35 34 -16 4 7 -16 40 18 -15 59 23 0.32 133 0 0 -17 3 48 17 8 27.0 14 123 -52 -17 19 33 -16 48 4 -17 24 18 -16 43 20 0.32 134 0 0 -17 47 45 17 8 28.3 15 122 -51 -18 3 31 -17 32 0 -18 8 17 -17 27 16 0.32 135 0 0 -18 31 38 17 8 29.6 16 122 -49 -18 47 25 -18 15 52 -18 52 11 -18 11 8 0.32 136 0 0 -19 15 26 17 8 31.1 18 122 -48 -19 31 14 -18 59 40 -19 36 0 -18 54 55 0.32 137 0 0 -19 59 7 17 8 32.7 19 121 -47 -20 14 56 -19 43 20 -20 19 41 -19 38 36 0.32 138 0 0 -20 42 39 17 8 34.3 20 121 -46 -20 58 28 -20 26 52 -21 3 14 -20 22 8 0.32 139 0 0 -21 26 1 17 8 36.0 21 120 -45 -21 41 50 -21 10 14 -21 46 36 -21 5 29 0.32 140 0 0 -22 9 11 17 8 37.8 22 120 -44 -22 25 0 -21 53 24 -22 29 46 -21 48 39 0.32 141 0 0 -22 52 7 17 8 39.7 24 120 -42 -23 7 55 -22 36 20 -23 12 41 -22 31 35 0.32 142 0 0 -23 34 47 17 8 41.7 25 119 -41 -23 50 36 -23 19 1 -23 55 21 -23 14 17 0.32 143 0 0 -24 17 11 17 8 43.7 26 119 -40 -24 32 59 -24 1 25 -24 37 44 -23 56 41 0.32 144 0 0 -24 59 16 17 8 45.9 27 118 -39 -25 15 3 -24 43 31 -25 19 48 -24 38 47 0.32 145 0 0 -25 41 1 17 8 48.0 28 118 -38 -25 56 47 -25 25 17 -26 1 32 -25 20 33 0.32 146 0 0 -26 22 25 17 8 50.3 29 117 -37 -26 38 10 -26 6 42 -26 42 54 -26 1 59 0.32 147 0 0 -27 3 26 17 8 52.6 30 117 -35 -27 19 9 -26 47 44 -27 23 54 -26 43 1 0.32 148 0 0 -27 44 3 17 8 55.0 31 116 -34 -27 59 45 -27 28 23 -28 4 29 -27 23 40 0.32 149 0 0 -28 24 15 17 8 57.5 33 115 -33 -28 39 55 -28 8 36 -28 44 38 -28 3 54 0.32 150 0 0 -29 4 0 17 8 59.9 34 115 -32 -29 19 38 -28 48 23 -29 24 21 -28 43 42 0.32 151 0 0 -29 43 17 17 9 2.5 35 114 -31 -29 58 54 -29 27 43 -30 3 36 -29 23 2 0.32 152 0 0 -30 22 6 17 9 5.1 36 113 -30 -30 37 40 -30 6 34 -30 42 22 -30 1 53 0.32 153 0 0 -31 0 25 17 9 7.7 37 113 -29 -31 15 57 -30 44 55 -31 20 38 -30 40 15 0.32 154 0 0 -31 38 14 17 9 10.4 38 112 -28 -31 53 44 -31 22 46 -31 58 24 -31 18 7 0.32 155 0 0 -32 15 31 17 9 13.1 39 111 -27 -32 30 58 -32 0 6 -32 35 38 -31 55 28 0.32 156 0 0 -32 52 16 17 9 15.9 40 110 -26 -33 7 41 -32 36 53 -33 12 19 -32 32 16 0.32 157 0 0 -33 28 28 17 9 18.7 41 110 -25 -33 43 50 -33 13 8 -33 48 28 -33 8 32 0.32 158 0 0 -34 4 7 17 9 21.5 42 109 -24 -34 19 26 -33 48 50 -34 24 3 -33 44 14 0.32 159 0 0 -34 39 11 17 9 24.3 43 108 -23 -34 54 27 -34 23 57 -34 59 3 -34 19 22 0.32 160 0 0 -35 13 41 17 9 27.2 44 107 -22 -35 28 54 -34 58 29 -35 33 29 -34 53 55 0.32 161 0 0 -35 47 35 17 9 30.1 45 106 -21 -36 2 45 -35 32 27 -36 7 19 -35 27 54 0.32 162 0 0 -36 20 54 17 9 33.0 46 105 -20 -36 36 0 -36 5 49 -36 40 34 -36 1 17 0.31 163 0 0 -36 53 37 17 9 35.9 47 104 -19 -37 8 40 -36 38 35 -37 13 12 -36 34 4 0.31 164 0 0 -37 25 44 17 9 38.8 47 104 -18 -37 40 44 -37 10 46 -37 45 15 -37 6 16 0.31 165 0 0 -37 57 14 17 9 41.7 48 103 -17 -38 12 11 -37 42 19 -38 16 41 -37 37 50 0.31 166 0 0 -38 28 8 17 9 44.7 49 102 -16 -38 43 1 -38 13 17 -38 47 30 -38 8 49 0.31 167 0 0 -38 58 25 17 9 47.6 50 100 -15 -39 13 14 -38 43 37 -39 17 42 -38 39 10 0.31 168 0 0 -39 28 6 17 9 50.6 51 99 -14 -39 42 51 -39 13 21 -39 47 18 -39 8 55 0.31 169 0 0 -39 57 9 17 9 53.6 52 98 -13 -40 11 51 -39 42 28 -40 16 17 -39 38 3 0.31 170 0 0 -40 25 36 17 9 56.5 53 97 -12 -40 40 14 -40 10 59 -40 44 39 -40 6 35 0.31 171 0 0 -40 53 25 17 9 59.5 53 96 -11 -41 8 0 -40 38 52 -41 12 24 -40 34 29 0.31 172 0 0 -41 20 39 17 10 2.5 54 95 -10 -41 35 10 -41 6 9 -41 39 32 -41 1 47 0.31 173 0 0 -41 47 15 17 10 5.4 55 94 -9 -42 1 42 -41 32 49 -42 6 4 -41 28 29 0.31 174 0 0 -42 13 15 17 10 8.4 56 92 -9 -42 27 39 -41 58 53 -42 31 59 -41 54 34 0.31 175 0 0 -42 38 39 17 10 11.4 57 91 -8 -42 52 59 -42 24 20 -42 57 18 -42 20 2 0.31 176 0 0 -43 3 27 17 10 14.3 57 90 -7 -43 17 43 -42 49 12 -43 22 1 -42 44 55 0.31 177 0 0 -43 27 39 17 10 17.2 58 88 -6 -43 41 51 -43 13 27 -43 46 8 -43 9 11 0.31 178 0 0 -43 51 15 17 10 20.2 59 87 -5 -44 5 24 -43 37 7 -44 9 40 -43 32 52 0.31 179 0 0 -44 14 16 17 10 23.1 59 86 -4 -44 28 21 -44 0 12 -44 32 36 -43 55 58 0.31 -180 0 0 -44 36 42 17 10 26.0 60 84 -4 -44 50 43 -44 22 41 -44 54 57 -44 18 28 0.31 -179 0 0 -44 58 33 17 10 28.9 61 83 -3 -45 12 31 -44 44 36 -45 16 43 -44 40 24 0.31 -178 0 0 -45 19 49 17 10 31.8 61 81 -2 -45 33 44 -45 5 56 -45 37 55 -45 1 45 0.31 -177 0 0 -45 40 32 17 10 34.7 62 80 -1 -45 54 23 -45 26 42 -45 58 33 -45 22 32 0.31 -176 0 0 -46 0 40 17 10 37.5 63 78 0 -46 14 28 -45 46 54 -46 18 37 -45 42 45 0.31 -175 0 0 -46 20 15 17 10 40.4 63 76 0 -46 33 59 -46 6 32 -46 38 8 -46 2 25 0.31 -174 0 0 -46 39 17 17 10 43.2 64 75 1 -46 52 58 -46 25 37 -46 57 5 -46 21 31 0.31 -173 0 0 -46 57 46 17 10 46.1 64 73 2 -47 11 24 -46 44 10 -47 15 30 -46 40 4 0.31 -172 0 0 -47 15 43 17 10 48.9 65 71 3 -47 29 17 -47 2 10 -47 33 22 -46 58 5 0.31 -171 0 0 -47 33 8 17 10 51.7 66 69 3 -47 46 39 -47 19 38 -47 50 43 -47 15 34 0.31 -170 0 0 -47 50 0 17 10 54.4 66 67 4 -48 3 28 -47 36 34 -48 7 32 -47 32 31 0.31 -169 0 0 -48 6 22 17 10 57.2 67 65 5 -48 19 47 -47 52 58 -48 23 49 -47 48 56 0.31 -168 0 0 -48 22 12 17 11 0.0 67 63 5 -48 35 34 -48 8 52 -48 39 36 -48 4 51 0.31 -167 0 0 -48 37 32 17 11 2.7 68 61 6 -48 50 51 -48 24 14 -48 54 52 -48 20 14 0.31 -166 0 0 -48 52 21 17 11 5.4 68 59 7 -49 5 37 -48 39 7 -49 9 37 -48 35 7 0.31 -165 0 0 -49 6 41 17 11 8.2 68 57 8 -49 19 54 -48 53 29 -49 23 53 -48 49 31 0.31 -164 0 0 -49 20 31 17 11 10.9 69 55 8 -49 33 41 -49 7 21 -49 37 39 -49 3 24 0.31 -163 0 0 -49 33 51 17 11 13.5 69 52 9 -49 46 59 -49 20 44 -49 50 56 -49 16 48 0.31 -162 0 0 -49 46 43 17 11 16.2 70 50 10 -49 59 48 -49 33 39 -50 3 44 -49 29 43 0.31 -161 0 0 -49 59 6 17 11 18.9 70 48 10 -50 12 8 -49 46 4 -50 16 4 -49 42 9 0.31 -160 0 0 -50 11 0 17 11 21.5 70 45 11 -50 24 0 -49 58 1 -50 27 55 -49 54 7 0.31 -159 0 0 -50 22 27 17 11 24.1 71 43 12 -50 35 25 -50 9 30 -50 39 19 -50 5 36 0.31 -158 0 0 -50 33 25 17 11 26.8 71 40 12 -50 46 21 -50 20 31 -50 50 15 -50 16 38 0.32 -157 0 0 -50 43 57 17 11 29.4 71 38 13 -50 56 50 -50 31 4 -51 0 43 -50 27 12 0.32 -156 0 0 -50 54 1 17 11 31.9 71 35 13 -51 6 52 -50 41 11 -51 10 44 -50 37 19 0.32 -155 0 0 -51 3 38 17 11 34.5 72 32 14 -51 16 27 -50 50 50 -51 20 19 -50 46 59 0.32 -154 0 0 -51 12 49 17 11 37.1 72 30 15 -51 25 36 -51 0 2 -51 29 27 -50 56 12 0.32 -153 0 0 -51 21 33 17 11 39.6 72 27 15 -51 34 18 -51 8 48 -51 38 9 -51 4 58 0.32 -152 0 0 -51 29 51 17 11 42.2 72 24 16 -51 42 35 -51 17 8 -51 46 25 -51 13 19 0.32 -151 0 0 -51 37 43 17 11 44.7 72 21 17 -51 50 25 -51 25 2 -51 54 15 -51 21 13 0.32 -150 0 0 -51 45 10 17 11 47.2 72 18 17 -51 57 50 -51 32 30 -52 1 39 -51 28 42 0.32 -149 0 0 -51 52 11 17 11 49.7 72 16 18 -52 4 49 -51 39 33 -52 8 38 -51 35 45 0.32 -148 0 0 -51 58 46 17 11 52.2 72 13 18 -52 11 24 -51 46 10 -52 15 12 -51 42 22 0.32 -147 0 0 -52 4 57 17 11 54.7 72 10 19 -52 17 33 -51 52 22 -52 21 21 -51 48 35 0.32 -146 0 0 -52 10 43 17 11 57.2 72 7 20 -52 23 18 -51 58 9 -52 27 5 -51 54 22 0.32 -145 0 0 -52 16 4 17 11 59.7 72 4 20 -52 28 37 -52 3 31 -52 32 24 -51 59 45 0.32 -144 0 0 -52 21 0 17 12 2.1 72 1 21 -52 33 33 -52 8 29 -52 37 19 -52 4 43 0.32 -143 0 0 -52 25 32 17 12 4.6 72 359 21 -52 38 4 -52 13 2 -52 41 50 -52 9 16 0.32 -142 0 0 -52 29 40 17 12 7.0 72 356 22 -52 42 11 -52 17 10 -52 45 57 -52 13 25 0.32 -141 0 0 -52 33 24 17 12 9.5 72 353 23 -52 45 53 -52 20 55 -52 49 39 -52 17 10 0.32 -140 0 0 -52 36 43 17 12 11.9 72 350 23 -52 49 12 -52 24 15 -52 52 58 -52 20 30 0.32 -139 0 0 -52 39 39 17 12 14.3 72 348 24 -52 52 7 -52 27 11 -52 55 52 -52 23 26 0.32 -138 0 0 -52 42 10 17 12 16.7 72 345 24 -52 54 38 -52 29 43 -52 58 23 -52 25 59 0.32 -137 0 0 -52 44 18 17 12 19.1 71 343 25 -52 56 45 -52 31 52 -53 0 30 -52 28 7 0.32 -136 0 0 -52 46 2 17 12 21.5 71 340 26 -52 58 29 -52 33 36 -53 2 14 -52 29 52 0.32 -135 0 0 -52 47 22 17 12 23.9 71 338 26 -52 59 49 -52 34 57 -53 3 34 -52 31 12 0.32 -134 0 0 -52 48 19 17 12 26.3 71 335 27 -53 0 45 -52 35 54 -53 4 30 -52 32 9 0.32 -133 0 0 -52 48 52 17 12 28.7 70 333 27 -53 1 18 -52 36 27 -53 5 3 -52 32 43 0.32 -132 0 0 -52 49 2 17 12 31.1 70 330 28 -53 1 28 -52 36 36 -53 5 13 -52 32 52 0.32 -131 0 0 -52 48 48 17 12 33.5 70 328 28 -53 1 14 -52 36 22 -53 4 59 -52 32 38 0.31 -130 0 0 -52 48 10 17 12 35.8 69 326 29 -53 0 36 -52 35 44 -53 4 21 -52 32 0 0.31 -129 0 0 -52 47 8 17 12 38.2 69 324 30 -52 59 35 -52 34 43 -53 3 20 -52 30 58 0.31 -128 0 0 -52 45 43 17 12 40.6 69 322 30 -52 58 10 -52 33 17 -53 1 55 -52 29 33 0.31 -127 0 0 -52 43 55 17 12 42.9 68 320 31 -52 56 22 -52 31 28 -53 0 7 -52 27 44 0.31 -126 0 0 -52 41 42 17 12 45.3 68 317 31 -52 54 10 -52 29 15 -52 57 56 -52 25 31 0.31 -125 0 0 -52 39 6 17 12 47.7 68 315 32 -52 51 35 -52 26 39 -52 55 20 -52 22 54 0.31 -124 0 0 -52 36 6 17 12 50.0 67 314 32 -52 48 35 -52 23 38 -52 52 21 -52 19 53 0.31 -123 0 0 -52 32 42 17 12 52.4 67 312 33 -52 45 12 -52 20 13 -52 48 58 -52 16 28 0.31 -122 0 0 -52 28 54 17 12 54.7 66 310 34 -52 41 25 -52 16 24 -52 45 11 -52 12 38 0.31 -121 0 0 -52 24 42 17 12 57.1 66 308 34 -52 37 13 -52 12 11 -52 41 0 -52 8 25 0.31 -120 0 0 -52 20 5 17 12 59.4 66 306 35 -52 32 38 -52 7 33 -52 36 24 -52 3 47 0.31 -119 0 0 -52 15 4 17 13 1.8 65 304 35 -52 27 38 -52 2 31 -52 31 25 -51 58 44 0.31 -118 0 0 -52 9 38 17 13 4.1 65 303 36 -52 22 13 -51 57 4 -52 26 1 -51 53 17 0.31 -117 0 0 -52 3 48 17 13 6.5 64 301 36 -52 16 24 -51 51 12 -52 20 12 -51 47 25 0.31 -116 0 0 -51 57 33 17 13 8.8 64 299 37 -52 10 10 -51 44 56 -52 13 59 -51 41 8 0.31 -115 0 0 -51 50 52 17 13 11.2 63 298 38 -52 3 32 -51 38 14 -52 7 20 -51 34 26 0.31 -114 0 0 -51 43 47 17 13 13.5 63 296 38 -51 56 27 -51 31 7 -52 0 17 -51 27 18 0.31 -113 0 0 -51 36 16 17 13 15.8 62 295 39 -51 48 58 -51 23 34 -51 52 48 -51 19 45 0.31 -112 0 0 -51 28 19 17 13 18.2 62 293 39 -51 41 3 -51 15 36 -51 44 53 -51 11 46 0.31 -111 0 0 -51 19 56 17 13 20.5 61 292 40 -51 32 42 -51 7 12 -51 36 33 -51 3 21 0.31 -110 0 0 -51 11 8 17 13 22.9 61 290 40 -51 23 56 -50 58 21 -51 27 47 -50 54 30 0.31 -109 0 0 -51 1 53 17 13 25.2 60 289 41 -51 14 42 -50 49 4 -51 18 34 -50 45 13 0.31 -108 0 0 -50 52 11 17 13 27.6 60 288 41 -51 5 3 -50 39 20 -51 8 55 -50 35 28 0.31 -107 0 0 -50 42 3 17 13 29.9 59 286 42 -50 54 56 -50 29 10 -50 58 50 -50 25 17 0.31 -106 0 0 -50 31 27 17 13 32.3 58 285 43 -50 44 23 -50 18 32 -50 48 17 -50 14 39 0.31 -105 0 0 -50 20 24 17 13 34.7 58 283 43 -50 33 22 -50 7 26 -50 37 17 -50 3 33 0.31 -104 0 0 -50 8 53 17 13 37.0 57 282 44 -50 21 54 -49 55 53 -50 25 49 -49 51 59 0.31 -103 0 0 -49 56 54 17 13 39.4 57 281 44 -50 9 58 -49 43 52 -50 13 54 -49 39 57 0.31 -102 0 0 -49 44 27 17 13 41.7 56 280 45 -49 57 33 -49 31 23 -50 1 30 -49 27 26 0.31 -101 0 0 -49 31 32 17 13 44.1 55 278 46 -49 44 40 -49 18 24 -49 48 37 -49 14 27 0.31 -100 0 0 -49 18 7 17 13 46.5 55 277 46 -49 31 18 -49 4 57 -49 35 16 -49 0 59 0.31 - 99 0 0 -49 4 13 17 13 48.8 54 276 47 -49 17 27 -48 51 1 -49 21 26 -48 47 2 0.31 - 98 0 0 -48 49 50 17 13 51.2 54 275 47 -49 3 6 -48 36 34 -49 7 6 -48 32 35 0.31 - 97 0 0 -48 34 57 17 13 53.5 53 274 48 -48 48 16 -48 21 38 -48 52 17 -48 17 38 0.31 - 96 0 0 -48 19 33 17 13 55.9 52 273 48 -48 32 56 -48 6 12 -48 36 57 -48 2 11 0.32 - 95 0 0 -48 3 39 17 13 58.3 52 271 49 -48 17 4 -47 50 15 -48 21 7 -47 46 13 0.32 - 94 0 0 -47 47 14 17 14 0.6 51 270 50 -48 0 43 -47 33 47 -48 4 46 -47 29 44 0.32 - 93 0 0 -47 30 18 17 14 3.0 50 269 50 -47 43 49 -47 16 47 -47 47 54 -47 12 43 0.32 - 92 0 0 -47 12 50 17 14 5.3 50 268 51 -47 26 25 -46 59 16 -47 30 30 -46 55 11 0.32 - 91 0 0 -46 54 50 17 14 7.7 49 267 51 -47 8 28 -46 41 13 -47 12 35 -46 37 7 0.32 - 90 0 0 -46 36 18 17 14 10.0 48 266 52 -46 49 59 -46 22 38 -46 54 7 -46 18 31 0.32 - 89 0 0 -46 17 13 17 14 12.4 47 265 52 -46 30 58 -46 3 29 -46 35 6 -45 59 22 0.32 - 88 0 0 -45 57 35 17 14 14.7 47 264 53 -46 11 23 -45 43 48 -46 15 33 -45 39 40 0.32 - 87 0 0 -45 37 24 17 14 17.1 46 263 54 -45 51 16 -45 23 34 -45 55 26 -45 19 24 0.32 - 86 0 0 -45 16 39 17 14 19.4 45 262 54 -45 30 34 -45 2 46 -45 34 46 -44 58 35 0.32 - 85 0 0 -44 55 21 17 14 21.7 45 261 55 -45 9 19 -44 41 23 -45 13 32 -44 37 12 0.32 - 84 0 0 -44 33 28 17 14 24.1 44 260 55 -44 47 30 -44 19 27 -44 51 44 -44 15 14 0.32 - 83 0 0 -44 11 0 17 14 26.4 43 259 56 -44 25 6 -43 56 56 -44 29 21 -43 52 42 0.32 - 82 0 0 -43 47 58 17 14 28.7 42 258 56 -44 2 7 -43 33 50 -44 6 23 -43 29 35 0.32 - 81 0 0 -43 24 21 17 14 31.0 41 257 57 -43 38 34 -43 10 9 -43 42 50 -43 5 53 0.32 - 80 0 0 -43 0 8 17 14 33.3 41 257 57 -43 14 24 -42 45 53 -43 18 42 -42 41 35 0.32 - 79 0 0 -42 35 19 17 14 35.5 40 256 58 -42 49 40 -42 21 1 -42 53 59 -42 16 42 0.32 - 78 0 0 -42 9 55 17 14 37.8 39 255 58 -42 24 19 -41 55 33 -42 28 39 -41 51 13 0.32 - 77 0 0 -41 43 55 17 14 40.0 38 254 59 -41 58 23 -41 29 29 -42 2 44 -41 25 9 0.32 - 76 0 0 -41 17 19 17 14 42.2 37 253 59 -41 31 50 -41 2 49 -41 36 13 -40 58 28 0.32 - 75 0 0 -40 50 7 17 14 44.4 36 252 60 -41 4 41 -40 35 33 -41 9 5 -40 31 11 0.32 - 74 0 0 -40 22 18 17 14 46.6 36 252 60 -40 36 56 -40 7 41 -40 41 21 -40 3 17 0.32 - 73 0 0 -39 53 53 17 14 48.8 35 251 61 -40 8 35 -39 39 12 -40 13 0 -39 34 47 0.32 - 72 0 0 -39 24 51 17 14 50.9 34 250 61 -39 39 37 -39 10 7 -39 44 3 -39 5 41 0.32 - 71 0 0 -38 55 13 17 14 53.0 33 249 61 -39 10 2 -38 40 25 -39 14 30 -38 35 58 0.32 - 70 0 0 -38 24 59 17 14 55.1 32 248 62 -38 39 51 -38 10 8 -38 44 20 -38 5 40 0.32 - 69 0 0 -37 54 8 17 14 57.1 31 248 62 -38 9 4 -37 39 14 -38 13 34 -37 34 45 0.32 - 68 0 0 -37 22 42 17 14 59.1 30 247 62 -37 37 41 -37 7 44 -37 42 12 -37 3 14 0.33 - 67 0 0 -36 50 39 17 15 1.1 29 246 63 -37 5 42 -36 35 38 -37 10 14 -36 31 7 0.33 - 66 0 0 -36 18 1 17 15 3.0 28 246 63 -36 33 7 -36 2 56 -36 37 40 -35 58 24 0.33 - 65 0 0 -35 44 47 17 15 4.9 27 245 63 -35 59 56 -35 29 39 -36 4 30 -35 25 6 0.33 - 64 0 0 -35 10 58 17 15 6.8 26 244 63 -35 26 11 -34 55 48 -35 30 45 -34 51 14 0.33 - 63 0 0 -34 36 35 17 15 8.6 25 244 63 -34 51 50 -34 21 21 -34 56 26 -34 16 47 0.33 - 62 0 0 -34 1 38 17 15 10.4 24 243 64 -34 16 56 -33 46 21 -34 21 32 -33 41 46 0.33 - 61 0 0 -33 26 7 17 15 12.1 23 242 64 -33 41 27 -33 10 47 -33 46 5 -33 6 11 0.33 - 60 0 0 -32 50 3 17 15 13.7 22 242 64 -33 5 26 -32 34 41 -33 10 4 -32 30 3 0.33 - 59 0 0 -32 13 26 17 15 15.3 21 241 64 -32 28 52 -31 58 2 -32 33 31 -31 53 24 0.33 - 58 0 0 -31 36 18 17 15 16.9 20 241 64 -31 51 47 -31 20 51 -31 56 26 -31 16 13 0.33 - 57 0 0 -30 58 39 17 15 18.3 19 240 63 -31 14 10 -30 43 10 -31 18 51 -30 38 31 0.34 - 56 0 0 -30 20 30 17 15 19.8 18 240 63 -30 36 3 -30 4 59 -30 40 45 -30 0 19 0.34 - 55 0 0 -29 41 52 17 15 21.1 17 239 63 -29 57 27 -29 26 19 -30 2 9 -29 21 38 0.34 - 54 0 0 -29 2 46 17 15 22.4 16 238 63 -29 18 23 -28 47 11 -29 23 6 -28 42 30 0.34 - 53 0 0 -28 23 13 17 15 23.6 15 238 62 -28 38 52 -28 7 36 -28 43 35 -28 2 54 0.34 - 52 0 0 -27 43 14 17 15 24.7 14 237 62 -27 58 54 -27 27 35 -28 3 38 -27 22 53 0.34 - 51 0 0 -27 2 50 17 15 25.8 12 237 62 -27 18 32 -26 47 10 -27 23 16 -26 42 28 0.35 - 50 0 0 -26 22 3 17 15 26.7 11 237 61 -26 37 46 -26 6 21 -26 42 30 -26 1 38 0.35 - 49 0 0 -25 40 53 17 15 27.6 10 236 61 -25 56 37 -25 25 11 -26 1 21 -25 20 27 0.35 - 48 0 0 -24 59 22 17 15 28.4 9 236 60 -25 15 7 -24 43 39 -25 19 52 -24 38 55 0.36 - 47 0 0 -24 17 32 17 15 29.1 8 235 60 -24 33 18 -24 1 48 -24 38 3 -23 57 4 0.37 - 46 0 0 -23 35 24 17 15 29.7 7 235 59 -23 51 10 -23 19 39 -23 55 55 -23 14 55 0.37 - 45 0 0 -22 52 59 17 15 30.3 6 234 58 -23 8 45 -22 37 14 -23 13 31 -22 32 30 0.39 - 44 0 0 -22 10 19 17 15 30.7 4 234 58 -22 26 6 -21 54 34 -22 30 51 -21 49 49 0.40 - 43 0 0 -21 27 25 17 15 31.0 3 234 57 -21 43 12 -21 11 40 -21 47 58 -21 6 56 0.43 - 42 0 0 -20 44 20 17 15 31.3 2 233 56 -21 0 7 -20 28 35 -21 4 52 -20 23 51 0.50 - 41 0 0 -20 1 4 17 15 31.4 1 233 55 -20 16 51 -19 45 20 -20 21 36 -19 40 36 0.72 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 13.2 Data for the target star ------------------------ * name: HIP 86535 * constellation : Scorpius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 17 41 04.6461 DE: -34 53 46.662 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 17 41 04.6465 DE: -34 53 46.662 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.300,0.100) * V mag [mag]: 8.4 * B mag [mag]: 8.6 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (623) Chimaera asteroid class: approx. diameter [km]: 44 approx. diameter ["]: 0.020 distance from Earth [AU]: 2.96920 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#93 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): 0.008", 0.003", 84.178° remarks: * orbital elements for (623)Chimaera : Mean anomaly = 170.4883957100 deg Arg. of pericenter = 124.8749059132 deg Long. of node = 308.2849704732 deg Inclination = 14.1229736834 deg Eccentricity = 0.1114215900 Semimajor axis = 2.4620187584 AU Perihelion dist = 2.1876967136 AU Mag: H = 10.79, G = 0.15 Epoch of elements : MJD 60361.71661388 TDT (2024 Feb 21.7166) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#932023Apr24,1.56,2024,2,21,17.198736,-0.035114,-0.292606,15.832169,-1.841529,-0.005363,-0.000306,-0.000001,0.000000 -143.4392,-34.9082,-74.57,-10.56,False HIP 86535,17.68462387,-34.8962951,8.60,8.37,8.25,0.1,0,,17.71119135,-34.9082346,7.94,7.61,0,0,0 623,Chimaera,16.31,44.007,2.9692,0,0,3.813,-5.45,,2.8,0 0,170.3056,2024,2,21,124.8749,308.2850,14.1230,0.11142,2.46202,2.18770,10.78,5.0,0.15 1.151,0.0077,0.0027,84,0.0031,Known errors,0.88,0,-1,-1 20240221__86535,60138.18 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 13, 04:24 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org