IOTA/IOTA-ES occultation update for (540) Rosamunde / UCAC4 523-019967 event on 2024 Dec 14, 08:03 UT Visible from Summary ------- On 2024 Dec 14 UT, the 18.3731751936101 km diameter asteroid (540) Rosamunde will occult a 10.6 mag star in the constellation Orion for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 2.86 mag to 13.34 mag (the magnitude of the asteroid) for at most 1.830 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 Dec 14, 07:52 - 2024 Dec 14, 08:14 * geocentric midpoint of event [JD]: 2460658.83579008 * magnitude of target star: 10.56 * magnitude drop [mag]: 2.86 * estimated maximum duration [s]: 1.830 * Moon: 98 % sunlit, 26° distance * Sun: 168° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 19 * 1 sigma uncertainty interval [path widths]: +/- 0.29 * 1 sigma uncertainty interval [seconds]: +/- 1.9 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.021, +/- 0.005) * 1 sigma uncertainty ellipse (major, minor, PA): (0.021", 0.005", 90°) * approx speed of asteroid's shadow [km/s]: 10.0638 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 523-019967 by 540 Rosamunde on 2024 Dec 14 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 154 0 0 - 2 15 0 8 14 3.3 0 76 -7 - 2 9 49 - 2 20 11 - 2 6 47 - 2 23 13 .... 155 0 0 - 1 59 22 8 14 3.1 1 76 -8 - 1 54 11 - 2 4 34 - 1 51 9 - 2 7 36 -0.12 156 0 0 - 1 43 37 8 14 2.8 2 75 -9 - 1 38 25 - 1 48 48 - 1 35 23 - 1 51 50 -0.10 157 0 0 - 1 27 43 8 14 2.2 3 75 -10 - 1 22 31 - 1 32 55 - 1 19 29 - 1 35 57 -0.10 158 0 0 - 1 11 42 8 14 1.5 4 75 -11 - 1 6 30 - 1 16 54 - 1 3 28 - 1 19 56 -0.09 159 0 0 - 0 55 34 8 14 0.5 5 75 -12 - 0 50 21 - 1 0 46 - 0 47 19 - 1 3 48 -0.09 160 0 0 - 0 39 19 8 13 59.3 6 75 -13 - 0 34 6 - 0 44 31 - 0 31 4 - 0 47 33 -0.09 161 0 0 - 0 22 57 8 13 58.0 7 75 -14 - 0 17 45 - 0 28 10 - 0 14 42 - 0 31 12 -0.09 162 0 0 - 0 6 29 8 13 56.4 8 75 -15 - 0 1 17 - 0 11 42 0 1 46 - 0 14 44 -0.09 163 0 0 0 10 4 8 13 54.6 9 75 -16 0 15 17 0 4 51 0 18 19 0 1 49 -0.09 164 0 0 0 26 43 8 13 52.6 10 75 -17 0 31 56 0 21 30 0 34 58 0 18 27 -0.09 165 0 0 0 43 27 8 13 50.4 12 75 -18 0 48 40 0 38 14 0 51 42 0 35 11 -0.09 166 0 0 1 0 15 8 13 48.1 13 75 -19 1 5 28 0 55 2 1 8 31 0 51 59 -0.09 167 0 0 1 17 8 8 13 45.5 14 75 -20 1 22 21 1 11 55 1 25 24 1 8 52 -0.09 168 0 0 1 34 5 8 13 42.7 15 76 -21 1 39 18 1 28 52 1 42 21 1 25 49 -0.08 169 0 0 1 51 6 8 13 39.7 16 76 -22 1 56 19 1 45 52 1 59 22 1 42 50 -0.08 170 0 0 2 8 10 8 13 36.6 17 76 -23 2 13 23 2 2 56 2 16 26 1 59 53 -0.08 171 0 0 2 25 17 8 13 33.2 18 76 -24 2 30 30 2 20 3 2 33 33 2 17 0 -0.08 172 0 0 2 42 26 8 13 29.6 19 76 -26 2 47 40 2 37 13 2 50 43 2 34 10 -0.08 173 0 0 2 59 38 8 13 25.9 20 76 -27 3 4 51 2 54 24 3 7 54 2 51 21 -0.08 174 0 0 3 16 51 8 13 22.0 21 76 -28 3 22 5 3 11 38 3 25 8 3 8 35 -0.08 175 0 0 3 34 7 8 13 17.8 22 76 -29 3 39 20 3 28 53 3 42 23 3 25 50 -0.08 176 0 0 3 51 23 8 13 13.5 23 76 -30 3 56 37 3 46 9 3 59 40 3 43 6 -0.08 177 0 0 4 8 40 8 13 9.1 24 76 -31 4 13 54 4 3 26 4 16 57 4 0 23 -0.08 178 0 0 4 25 58 8 13 4.4 25 76 -32 4 31 11 4 20 44 4 34 15 4 17 41 -0.08 179 0 0 4 43 15 8 12 59.6 26 76 -33 4 48 29 4 38 2 4 51 32 4 34 59 -0.08 -180 0 0 5 0 33 8 12 54.5 27 76 -34 5 5 47 4 55 19 5 8 50 4 52 16 -0.08 -179 0 0 5 17 50 8 12 49.3 28 76 -35 5 23 4 5 12 36 5 26 7 5 9 33 -0.08 -178 0 0 5 35 6 8 12 44.0 29 77 -36 5 40 20 5 29 52 5 43 23 5 26 49 -0.08 -177 0 0 5 52 21 8 12 38.5 30 77 -37 5 57 34 5 47 7 6 0 37 5 44 4 -0.08 -176 0 0 6 9 34 8 12 32.8 31 77 -38 6 14 47 6 4 20 6 17 51 6 1 17 -0.08 -175 0 0 6 26 45 8 12 26.9 32 77 -39 6 31 59 6 21 31 6 35 2 6 18 28 -0.08 -174 0 0 6 43 54 8 12 20.9 33 77 -40 6 49 8 6 38 40 6 52 11 6 35 37 -0.08 -173 0 0 7 1 0 8 12 14.7 34 77 -41 7 6 14 6 55 47 7 9 17 6 52 44 -0.08 -172 0 0 7 18 4 8 12 8.4 35 77 -42 7 23 17 7 12 50 7 26 20 7 9 47 -0.08 -171 0 0 7 35 4 8 12 1.9 36 78 -43 7 40 17 7 29 51 7 43 20 7 26 48 -0.08 -170 0 0 7 52 1 8 11 55.3 37 78 -44 7 57 14 7 46 47 8 0 17 7 43 44 -0.08 -169 0 0 8 8 53 8 11 48.5 38 78 -45 8 14 7 8 3 40 8 17 9 8 0 37 -0.08 -168 0 0 8 25 42 8 11 41.6 39 78 -46 8 30 55 8 20 29 8 33 58 8 17 26 -0.08 -167 0 0 8 42 26 8 11 34.6 40 78 -47 8 47 39 8 37 13 8 50 42 8 34 10 -0.08 -166 0 0 8 59 5 8 11 27.4 41 79 -48 9 4 18 8 53 52 9 7 21 8 50 49 -0.08 -165 0 0 9 15 39 8 11 20.1 42 79 -49 9 20 52 9 10 26 9 23 55 9 7 23 -0.09 -164 0 0 9 32 8 8 11 12.6 43 79 -49 9 37 20 9 26 55 9 40 23 9 23 52 -0.09 -163 0 0 9 48 31 8 11 5.0 44 79 -50 9 53 43 9 43 18 9 56 46 9 40 15 -0.09 -162 0 0 10 4 47 8 10 57.3 45 80 -51 10 10 0 9 59 35 10 13 3 9 56 33 -0.09 -161 0 0 10 20 58 8 10 49.5 46 80 -52 10 26 11 10 15 46 10 29 13 10 12 43 -0.09 -160 0 0 10 37 2 8 10 41.6 47 80 -53 10 42 15 10 31 50 10 45 17 10 28 48 -0.09 -159 0 0 10 53 0 8 10 33.5 48 80 -54 10 58 12 10 47 47 11 1 14 10 44 45 -0.09 -158 0 0 11 8 50 8 10 25.3 49 81 -55 11 14 2 11 3 38 11 17 4 11 0 36 -0.09 -157 0 0 11 24 33 8 10 17.1 50 81 -56 11 29 45 11 19 21 11 32 47 11 16 19 -0.09 -156 0 0 11 40 8 8 10 8.7 51 81 -57 11 45 20 11 34 56 11 48 22 11 31 54 -0.09 -155 0 0 11 55 35 8 10 0.2 52 82 -58 12 0 47 11 50 24 12 3 49 11 47 22 -0.09 -154 0 0 12 10 54 8 9 51.6 53 82 -59 12 16 6 12 5 43 12 19 8 12 2 41 -0.09 -153 0 0 12 26 5 8 9 42.9 54 82 -60 12 31 17 12 20 54 12 34 18 12 17 52 -0.09 -152 0 0 12 41 7 8 9 34.2 55 83 -61 12 46 19 12 35 56 12 49 20 12 32 55 -0.09 -151 0 0 12 56 1 8 9 25.3 56 83 -62 13 1 12 12 50 50 13 4 13 12 47 48 -0.09 -150 0 0 13 10 45 8 9 16.4 57 84 -63 13 15 56 13 5 34 13 18 57 13 2 33 -0.09 -149 0 0 13 25 20 8 9 7.4 58 84 -64 13 30 31 13 20 10 13 33 32 13 17 8 -0.09 -148 0 0 13 39 46 8 8 58.3 58 84 -65 13 44 56 13 34 35 13 47 58 13 31 34 -0.09 -147 0 0 13 54 2 8 8 49.1 59 85 -66 13 59 12 13 48 51 14 2 13 13 45 50 -0.09 -146 0 0 14 8 8 8 8 39.9 60 85 -67 14 13 18 14 2 58 14 16 19 13 59 57 -0.09 -145 0 0 14 22 3 8 8 30.5 61 86 -68 14 27 13 14 16 54 14 30 14 14 13 53 -0.09 -144 0 0 14 35 49 8 8 21.2 62 87 -69 14 40 59 14 30 39 14 44 0 14 27 39 -0.09 -143 0 0 14 49 24 8 8 11.7 63 87 -70 14 54 34 14 44 14 14 57 34 14 41 14 -0.09 -142 0 0 15 2 48 8 8 2.2 64 88 -70 15 7 58 14 57 39 15 10 58 14 54 38 -0.09 -141 0 0 15 16 2 8 7 52.7 65 88 -71 15 21 11 15 10 53 15 24 11 15 7 52 -0.09 -140 0 0 15 29 4 8 7 43.0 66 89 -72 15 34 13 15 23 55 15 37 13 15 20 55 -0.09 -139 0 0 15 41 55 8 7 33.4 67 90 -73 15 47 4 15 36 46 15 50 4 15 33 46 -0.09 -138 0 0 15 54 35 8 7 23.7 68 91 -74 15 59 44 15 49 26 16 2 44 15 46 26 -0.09 -137 0 0 16 7 3 8 7 13.9 69 91 -75 16 12 11 16 1 55 16 15 11 15 58 55 -0.09 -136 0 0 16 19 20 8 7 4.1 70 92 -76 16 24 28 16 14 11 16 27 28 16 11 12 -0.09 -135 0 0 16 31 24 8 6 54.3 71 93 -77 16 36 32 16 26 16 16 39 32 16 23 17 -0.09 -134 0 0 16 43 17 8 6 44.4 71 94 -78 16 48 25 16 38 9 16 51 24 16 35 9 -0.09 -133 0 0 16 54 57 8 6 34.5 72 95 -78 17 0 5 16 49 50 17 3 4 16 46 50 -0.09 -132 0 0 17 6 25 8 6 24.5 73 96 -79 17 11 33 17 1 18 17 14 32 16 58 19 -0.09 -131 0 0 17 17 41 8 6 14.6 74 98 -80 17 22 48 17 12 34 17 25 48 17 9 35 -0.09 -130 0 0 17 28 44 8 6 4.6 75 99 -81 17 33 51 17 23 37 17 36 50 17 20 38 -0.09 -129 0 0 17 39 35 8 5 54.6 76 101 -82 17 44 41 17 34 28 17 47 40 17 31 29 -0.09 -128 0 0 17 50 12 8 5 44.5 77 103 -82 17 55 19 17 45 6 17 58 18 17 42 7 -0.09 -127 0 0 18 0 37 8 5 34.5 78 105 -83 18 5 43 17 55 31 18 8 42 17 52 32 -0.09 -126 0 0 18 10 49 8 5 24.4 78 107 -84 18 15 55 18 5 42 18 18 53 18 2 44 -0.09 -125 0 0 18 20 47 8 5 14.3 79 109 -84 18 25 53 18 15 41 18 28 52 18 12 42 -0.09 -124 0 0 18 30 32 8 5 4.2 80 112 -85 18 35 38 18 25 26 18 38 37 18 22 28 -0.09 -123 0 0 18 40 4 8 4 54.1 81 116 -85 18 45 10 18 34 58 18 48 8 18 32 0 -0.09 -122 0 0 18 49 22 8 4 44.0 81 119 -85 18 54 28 18 44 17 18 57 26 18 41 19 -0.09 -121 0 0 18 58 27 8 4 33.9 82 124 -85 19 3 33 18 53 22 19 6 31 18 50 24 -0.09 -120 0 0 19 7 18 8 4 23.8 83 129 -85 19 12 24 19 2 13 19 15 22 18 59 15 -0.09 -119 0 0 19 15 56 8 4 13.7 83 136 -85 19 21 1 19 10 51 19 23 59 19 7 53 -0.10 -118 0 0 19 24 19 8 4 3.6 84 143 -84 19 29 24 19 19 15 19 32 22 19 16 17 -0.10 -117 0 0 19 32 29 8 3 53.5 84 152 -84 19 37 34 19 27 25 19 40 31 19 24 27 -0.10 -116 0 0 19 40 25 8 3 43.4 84 161 -83 19 45 29 19 35 20 19 48 27 19 32 23 -0.10 -115 0 0 19 48 6 8 3 33.3 84 171 -82 19 53 11 19 43 2 19 56 8 19 40 5 -0.10 -114 0 0 19 55 34 8 3 23.3 84 181 -82 20 0 38 19 50 30 20 3 35 19 47 32 -0.10 -113 0 0 20 2 47 8 3 13.2 84 191 -81 20 7 51 19 57 43 20 10 48 19 54 46 -0.10 -112 0 0 20 9 46 8 3 3.2 84 199 -80 20 14 50 20 4 42 20 17 47 20 1 45 -0.10 -111 0 0 20 16 31 8 2 53.2 83 207 -79 20 21 34 20 11 27 20 24 32 20 8 30 -0.10 -110 0 0 20 23 1 8 2 43.2 83 213 -78 20 28 4 20 17 57 20 31 1 20 15 0 -0.10 -109 0 0 20 29 17 8 2 33.2 82 219 -78 20 34 20 20 24 13 20 37 17 20 21 16 -0.10 -108 0 0 20 35 18 8 2 23.3 82 224 -77 20 40 21 20 30 15 20 43 18 20 27 18 -0.10 -107 0 0 20 41 4 8 2 13.4 81 228 -76 20 46 7 20 36 1 20 49 4 20 33 4 -0.10 -106 0 0 20 46 36 8 2 3.5 80 231 -75 20 51 39 20 41 33 20 54 36 20 38 37 -0.10 -105 0 0 20 51 54 8 1 53.6 79 234 -74 20 56 56 20 46 51 20 59 53 20 43 54 -0.10 -104 0 0 20 56 56 8 1 43.8 79 237 -73 21 1 59 20 51 53 21 4 55 20 48 57 -0.09 -103 0 0 21 1 44 8 1 34.0 78 239 -72 21 6 46 20 56 41 21 9 43 20 53 45 -0.09 -102 0 0 21 6 17 8 1 24.3 77 241 -72 21 11 19 21 1 14 21 14 16 20 58 18 -0.09 -101 0 0 21 10 35 8 1 14.6 76 243 -71 21 15 37 21 5 32 21 18 34 21 2 36 -0.09 -100 0 0 21 14 38 8 1 4.9 75 245 -70 21 19 40 21 9 36 21 22 37 21 6 39 -0.09 - 99 0 0 21 18 26 8 0 55.3 75 246 -69 21 23 28 21 13 24 21 26 25 21 10 28 -0.09 - 98 0 0 21 21 59 8 0 45.7 74 248 -68 21 27 1 21 16 57 21 29 58 21 14 1 -0.09 - 97 0 0 21 25 17 8 0 36.2 73 249 -67 21 30 19 21 20 15 21 33 16 21 17 19 -0.09 - 96 0 0 21 28 20 8 0 26.7 72 250 -66 21 33 22 21 23 19 21 36 19 21 20 22 -0.09 - 95 0 0 21 31 8 8 0 17.2 71 251 -66 21 36 10 21 26 7 21 39 7 21 23 10 -0.09 - 94 0 0 21 33 41 8 0 7.8 70 252 -65 21 38 43 21 28 39 21 41 39 21 25 43 -0.09 - 93 0 0 21 35 59 7 59 58.5 69 253 -64 21 41 1 21 30 57 21 43 57 21 28 1 -0.09 - 92 0 0 21 38 1 7 59 49.2 69 254 -63 21 43 3 21 33 0 21 45 59 21 30 4 -0.09 - 91 0 0 21 39 49 7 59 40.0 68 255 -62 21 44 50 21 34 47 21 47 47 21 31 51 -0.09 - 90 0 0 21 41 21 7 59 30.8 67 256 -61 21 46 22 21 36 19 21 49 19 21 33 23 -0.09 - 89 0 0 21 42 38 7 59 21.7 66 257 -60 21 47 39 21 37 36 21 50 35 21 34 40 -0.09 - 88 0 0 21 43 39 7 59 12.7 65 257 -59 21 48 41 21 38 38 21 51 37 21 35 42 -0.09 - 87 0 0 21 44 25 7 59 3.7 64 258 -59 21 49 27 21 39 24 21 52 23 21 36 28 -0.09 - 86 0 0 21 44 56 7 58 54.8 63 259 -58 21 49 58 21 39 55 21 52 54 21 36 59 -0.09 - 85 0 0 21 45 12 7 58 45.9 62 260 -57 21 50 14 21 40 11 21 53 10 21 37 15 -0.09 - 84 0 0 21 45 12 7 58 37.1 62 260 -56 21 50 14 21 40 11 21 53 10 21 37 15 -0.09 - 83 0 0 21 44 57 7 58 28.4 61 261 -55 21 49 59 21 39 56 21 52 55 21 37 0 -0.09 - 82 0 0 21 44 27 7 58 19.7 60 261 -54 21 49 28 21 39 25 21 52 24 21 36 29 -0.09 - 81 0 0 21 43 41 7 58 11.2 59 262 -53 21 48 42 21 38 39 21 51 38 21 35 43 -0.09 - 80 0 0 21 42 40 7 58 2.7 58 263 -52 21 47 41 21 37 38 21 50 37 21 34 42 -0.09 - 79 0 0 21 41 23 7 57 54.3 57 263 -51 21 46 25 21 36 21 21 49 21 21 33 25 -0.09 - 78 0 0 21 39 51 7 57 45.9 56 264 -51 21 44 53 21 34 49 21 47 49 21 31 53 -0.09 - 77 0 0 21 38 3 7 57 37.7 55 264 -50 21 43 5 21 33 2 21 46 1 21 30 6 -0.09 - 76 0 0 21 36 1 7 57 29.5 55 265 -49 21 41 2 21 30 59 21 43 58 21 28 3 -0.09 - 75 0 0 21 33 42 7 57 21.4 54 265 -48 21 38 44 21 28 41 21 41 40 21 25 44 -0.09 - 74 0 0 21 31 9 7 57 13.4 53 266 -47 21 36 10 21 26 7 21 39 7 21 23 11 -0.09 - 73 0 0 21 28 19 7 57 5.4 52 266 -46 21 33 21 21 23 18 21 36 18 21 20 21 -0.09 - 72 0 0 21 25 15 7 56 57.6 51 267 -45 21 30 17 21 20 13 21 33 13 21 17 17 -0.09 - 71 0 0 21 21 55 7 56 49.9 50 267 -44 21 26 57 21 16 53 21 29 53 21 13 57 -0.09 - 70 0 0 21 18 20 7 56 42.2 49 268 -43 21 23 22 21 13 18 21 26 18 21 10 21 -0.09 - 69 0 0 21 14 29 7 56 34.7 48 268 -43 21 19 31 21 9 27 21 22 28 21 6 30 -0.09 - 68 0 0 21 10 23 7 56 27.2 47 269 -42 21 15 25 21 5 21 21 18 22 21 2 24 -0.09 - 67 0 0 21 6 1 7 56 19.8 46 269 -41 21 11 4 21 0 59 21 14 0 20 58 2 -0.09 - 66 0 0 21 1 24 7 56 12.6 46 270 -40 21 6 27 20 56 22 21 9 24 20 53 25 -0.09 - 65 0 0 20 56 32 7 56 5.4 45 270 -39 21 1 35 20 51 30 21 4 32 20 48 33 -0.09 - 64 0 0 20 51 25 7 55 58.4 44 270 -38 20 56 28 20 46 22 20 59 24 20 43 25 -0.09 - 63 0 0 20 46 2 7 55 51.4 43 271 -37 20 51 5 20 40 59 20 54 2 20 38 2 -0.09 - 62 0 0 20 40 24 7 55 44.6 42 271 -36 20 45 27 20 35 21 20 48 24 20 32 24 -0.09 - 61 0 0 20 34 31 7 55 37.8 41 272 -35 20 39 34 20 29 28 20 42 31 20 26 31 -0.09 - 60 0 0 20 28 22 7 55 31.2 40 272 -34 20 33 25 20 23 19 20 36 22 20 20 22 -0.09 - 59 0 0 20 21 58 7 55 24.7 39 272 -34 20 27 2 20 16 55 20 29 59 20 13 58 -0.09 - 58 0 0 20 15 20 7 55 18.3 38 273 -33 20 20 23 20 10 16 20 23 20 20 7 19 -0.09 - 57 0 0 20 8 26 7 55 12.0 37 273 -32 20 13 29 20 3 22 20 16 27 20 0 25 -0.09 - 56 0 0 20 1 17 7 55 5.9 36 274 -31 20 6 20 19 56 13 20 9 18 19 53 15 -0.09 - 55 0 0 19 53 52 7 54 59.8 35 274 -30 19 58 57 19 48 48 20 1 54 19 45 51 -0.09 - 54 0 0 19 46 13 7 54 53.9 35 274 -29 19 51 18 19 41 9 19 54 15 19 38 12 -0.09 - 53 0 0 19 38 19 7 54 48.1 34 275 -28 19 43 24 19 33 15 19 46 22 19 30 17 -0.09 - 52 0 0 19 30 11 7 54 42.5 33 275 -27 19 35 15 19 25 6 19 38 13 19 22 8 -0.09 - 51 0 0 19 21 47 7 54 37.0 32 275 -26 19 26 52 19 16 42 19 29 50 19 13 44 -0.09 - 50 0 0 19 13 8 7 54 31.6 31 276 -25 19 18 13 19 8 4 19 21 11 19 5 6 -0.09 - 49 0 0 19 4 15 7 54 26.3 30 276 -24 19 9 21 18 59 10 19 12 19 18 56 12 -0.09 - 48 0 0 18 55 8 7 54 21.2 29 276 -23 19 0 13 18 50 2 19 3 11 18 47 4 -0.09 - 47 0 0 18 45 45 7 54 16.2 28 277 -22 18 50 51 18 40 40 18 53 49 18 37 41 -0.09 - 46 0 0 18 36 8 7 54 11.3 27 277 -22 18 41 14 18 31 3 18 44 13 18 28 4 -0.09 - 45 0 0 18 26 17 7 54 6.6 26 277 -21 18 31 23 18 21 11 18 34 22 18 18 13 -0.09 - 44 0 0 18 16 12 7 54 2.1 25 278 -20 18 21 18 18 11 6 18 24 17 18 8 7 -0.09 - 43 0 0 18 5 52 7 53 57.7 24 278 -19 18 10 58 18 0 46 18 13 57 17 57 47 -0.09 - 42 0 0 17 55 18 7 53 53.4 23 278 -18 18 0 25 17 50 11 18 3 24 17 47 13 -0.09 - 41 0 0 17 44 30 7 53 49.3 22 279 -17 17 49 37 17 39 23 17 52 36 17 36 24 -0.09 - 40 0 0 17 33 28 7 53 45.3 21 279 -16 17 38 35 17 28 21 17 41 35 17 25 22 -0.09 - 39 0 0 17 22 13 7 53 41.5 20 279 -15 17 27 20 17 17 5 17 30 19 17 14 6 -0.09 - 38 0 0 17 10 43 7 53 37.9 19 280 -14 17 15 51 17 5 36 17 18 50 17 2 36 -0.09 - 37 0 0 16 59 0 7 53 34.4 19 280 -13 17 4 8 16 53 53 17 7 8 16 50 53 -0.09 - 36 0 0 16 47 4 7 53 31.1 18 280 -12 16 52 12 16 41 56 16 55 12 16 38 56 -0.09 - 35 0 0 16 34 54 7 53 27.9 17 281 -11 16 40 2 16 29 46 16 43 2 16 26 46 -0.09 - 34 0 0 16 22 31 7 53 24.9 16 281 -10 16 27 40 16 17 23 16 30 40 16 14 23 -0.09 - 33 0 0 16 9 55 7 53 22.1 15 281 -9 16 15 4 16 4 47 16 18 4 16 1 47 -0.09 - 32 0 0 15 57 6 7 53 19.4 14 281 -8 16 2 15 15 51 58 16 5 16 15 48 58 -0.09 - 31 0 0 15 44 5 7 53 17.0 13 282 -7 15 49 14 15 38 56 15 52 14 15 35 56 -0.09 - 30 0 0 15 30 51 7 53 14.6 12 282 -6 15 36 0 15 25 41 15 39 0 15 22 41 -0.09 - 29 0 0 15 17 24 7 53 12.5 11 282 -5 15 22 34 15 12 15 15 25 34 15 9 14 -0.09 - 28 0 0 15 3 45 7 53 10.6 10 282 -4 15 8 55 14 58 36 15 11 56 14 55 35 -0.10 - 27 0 0 14 49 54 7 53 8.8 9 283 -3 14 55 4 14 44 45 14 58 5 14 41 44 -0.10 - 26 0 0 14 35 52 7 53 7.2 8 283 -2 14 41 2 14 30 42 14 44 3 14 27 41 -0.10 - 25 0 0 14 21 37 7 53 5.8 7 283 -2 14 26 48 14 16 27 14 29 49 14 13 26 -0.10 - 24 0 0 14 7 11 7 53 4.6 6 283 -1 14 12 22 14 2 1 14 15 23 13 59 0 -0.10 - 23 0 0 13 52 34 7 53 3.6 5 284 0 13 57 45 13 47 23 14 0 46 13 44 22 -0.11 - 22 0 0 13 37 46 7 53 2.7 4 284 1 13 42 57 13 32 35 13 45 59 13 29 34 -0.12 - 21 0 0 13 22 47 7 53 2.1 3 284 2 13 27 58 13 17 36 13 31 0 13 14 34 -0.13 - 20 0 0 13 7 37 7 53 1.6 2 284 3 13 12 49 13 2 26 13 15 51 12 59 24 -0.16 - 19 0 0 12 52 18 7 53 1.4 1 285 4 12 57 29 12 47 6 13 0 31 12 44 4 -0.25 Uncertainty in time = +/- 2 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: UCAC4 523-019967 * constellation : Orion * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 05 59 29.9123 DE: +14 25 02.408 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 05 59 29.9124 DE: +14 25 02.407 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 10.6 * B mag [mag]: 11.2 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (540) Rosamunde asteroid class: approx. diameter [km]: 18 approx. diameter ["]: 0.020 distance from Earth [AU]: 1.23850 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#56 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): 0.021", 0.005", 90.024° remarks: * orbital elements for (540)Rosamunde : Mean anomaly = 277.5000712516 deg Arg. of pericenter = 337.3535180086 deg Long. of node = 202.0863565673 deg Inclination = 5.5804887919 deg Eccentricity = 0.0894080788 Semimajor axis = 2.2196884576 AU Perihelion dist = 2.0212303770 AU Mag: H = 10.72, G = 0.15 Epoch of elements : MJD 60658.33579120 TDT (2024 Dec 14.3358) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#562023Apr24,1.83,2024,12,14,8.058962,-0.012397,0.091891,-5.629358,-0.759041,-0.000715,0.000874,0.000001,0.000000 -114.1374,14.4197,57.82,-23.24,False UCAC4 523-019967,5.99164231,14.4173355,11.20,10.56,10.21,0.1,0,,6.01570802,14.4196577,2.86,2.76,0,0,0 540,Rosamunde,13.34,18.463,1.2385,0,0,-2.751,-5.39,,1.0,0 0,277.4000,2024,12,14,337.3535,202.0864,5.5805,0.08941,2.21969,2.02123,10.72,5.0,0.15 1.292,0.0210,0.0053,90,0.0060,Known errors,1.04,0,-1,-1 20241214_019967,60140.74 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 17:45 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org