IOTA/IOTA-ES occultation update for (850) Altona / TYC 5285-00026-1 event on 2022 Oct 20, 11:25 UT Visible from W USA Summary ------- On 2022 Oct 20 UT, the 76.2 km diameter asteroid (850) Altona will occult a 11.4 mag star in the constellation Cetus for observers along a path across W USA. In the case of an occultation, the combined light of the asteroid and the star will drop by 3.24 mag to 14.60 mag (the magnitude of the asteroid) for at most 5.400 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: 2022 Oct 20, 11:18 - 2022 Oct 20, 11:32 * geocentric midpoint of event [JD]: 2459872.97594296 * magnitude of target star: 11.42 * magnitude drop [mag]: 3.24 * estimated maximum duration [s]: 5.400 * Moon: 25 % sunlit, 113° distance * Sun: 157° distance * rough path description: W USA Additional comments ------------------- RUWE high The occultation path -------------------- * approximate projected width [km]: 86 * 1 sigma uncertainty interval [path widths]: +/- 0.10 * 1 sigma uncertainty interval [seconds]: +/- 2.6 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.021, +/- 0.009) * 1 sigma uncertainty ellipse (major, minor, PA): (0.022", 0.004", 68°) * approx speed of asteroid's shadow [km/s]: 14.1018 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 5285-00026-1 by 850 Altona on 2022 Oct 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 ' " Latitude Latitude Latitude Latitude 108 0 0 5 4 59 11 32 2.4 1 98 -15 5 28 37 4 41 25 5 33 8 4 36 56 .... 109 0 0 4 56 46 11 32 2.3 2 98 -16 5 20 23 4 33 15 5 24 54 4 28 46 -0.32 110 0 0 4 49 2 11 32 1.9 3 98 -17 5 12 37 4 25 32 5 17 8 4 21 3 -0.40 111 0 0 4 41 46 11 32 1.5 4 99 -18 5 5 19 4 18 17 5 9 50 4 13 49 -0.44 112 0 0 4 34 58 11 32 0.8 5 99 -19 4 58 30 4 11 31 5 3 1 4 7 3 -0.46 113 0 0 4 28 39 11 32 0.0 6 99 -20 4 52 10 4 5 13 4 56 40 4 0 45 -0.47 114 0 0 4 22 48 11 31 59.1 7 99 -21 4 46 17 3 59 23 4 50 47 3 54 56 -0.48 115 0 0 4 17 25 11 31 58.0 8 99 -22 4 40 53 3 54 2 4 45 23 3 49 34 -0.49 116 0 0 4 12 31 11 31 56.8 9 99 -23 4 35 58 3 49 8 4 40 27 3 44 41 -0.49 117 0 0 4 8 4 11 31 55.4 10 99 -24 4 31 31 3 44 43 4 36 0 3 40 16 -0.49 118 0 0 4 4 7 11 31 53.8 11 99 -25 4 27 32 3 40 46 4 32 1 3 36 19 -0.50 119 0 0 4 0 37 11 31 52.1 12 99 -26 4 24 2 3 37 17 4 28 30 3 32 51 -0.50 120 0 0 3 57 36 11 31 50.3 13 99 -27 4 21 0 3 34 17 4 25 28 3 29 50 -0.50 121 0 0 3 55 3 11 31 48.3 13 99 -28 4 18 26 3 31 44 4 22 54 3 27 18 -0.50 122 0 0 3 52 58 11 31 46.2 14 100 -29 4 16 20 3 29 40 4 20 49 3 25 13 -0.50 123 0 0 3 51 21 11 31 43.9 15 100 -30 4 14 43 3 28 3 4 19 11 3 23 37 -0.51 124 0 0 3 50 12 11 31 41.5 16 100 -31 4 13 34 3 26 55 4 18 2 3 22 29 -0.51 125 0 0 3 49 31 11 31 38.9 17 100 -32 4 12 53 3 26 15 4 17 21 3 21 49 -0.51 126 0 0 3 49 19 11 31 36.2 18 100 -33 4 12 40 3 26 2 4 17 9 3 21 36 -0.51 127 0 0 3 49 34 11 31 33.4 19 100 -34 4 12 56 3 26 18 4 17 24 3 21 52 -0.51 128 0 0 3 50 18 11 31 30.4 20 100 -35 4 13 39 3 27 1 4 18 7 3 22 35 -0.51 129 0 0 3 51 29 11 31 27.3 21 100 -36 4 14 50 3 28 12 4 19 18 3 23 46 -0.51 130 0 0 3 53 8 11 31 24.1 22 100 -37 4 16 29 3 29 51 4 20 58 3 25 25 -0.51 131 0 0 3 55 15 11 31 20.7 23 101 -38 4 18 37 3 31 58 4 23 5 3 27 32 -0.51 132 0 0 3 57 49 11 31 17.2 24 101 -39 4 21 11 3 34 32 4 25 40 3 30 6 -0.51 133 0 0 4 0 51 11 31 13.5 25 101 -40 4 24 14 3 37 34 4 28 42 3 33 7 -0.51 134 0 0 4 4 21 11 31 9.7 26 101 -41 4 27 44 3 41 3 4 32 12 3 36 36 -0.51 135 0 0 4 8 18 11 31 5.8 27 101 -42 4 31 42 3 44 59 4 36 10 3 40 33 -0.51 136 0 0 4 12 43 11 31 1.8 28 102 -43 4 36 7 3 49 23 4 40 36 3 44 57 -0.51 137 0 0 4 17 34 11 30 57.6 29 102 -44 4 40 59 3 54 14 4 45 28 3 49 48 -0.51 138 0 0 4 22 54 11 30 53.3 30 102 -45 4 46 19 3 59 33 4 50 48 3 55 6 -0.51 139 0 0 4 28 40 11 30 48.9 31 102 -46 4 52 7 4 5 18 4 56 36 4 0 51 -0.51 140 0 0 4 34 53 11 30 44.4 32 103 -46 4 58 21 4 11 30 5 2 50 4 7 3 -0.51 141 0 0 4 41 33 11 30 39.7 33 103 -47 5 5 2 4 18 10 5 9 32 4 13 42 -0.51 142 0 0 4 48 40 11 30 34.9 34 103 -48 5 12 10 4 25 15 5 16 40 4 20 48 -0.51 143 0 0 4 56 14 11 30 30.0 34 103 -49 5 19 45 4 32 48 5 24 15 4 28 20 -0.51 144 0 0 5 4 15 11 30 25.0 35 104 -50 5 27 47 4 40 47 5 32 17 4 36 19 -0.51 145 0 0 5 12 42 11 30 19.8 36 104 -51 5 36 15 4 49 13 5 40 46 4 44 44 -0.51 146 0 0 5 21 35 11 30 14.6 37 105 -52 5 45 10 4 58 5 5 49 41 4 53 36 -0.51 147 0 0 5 30 55 11 30 9.2 38 105 -53 5 54 31 5 7 23 5 59 2 5 2 54 -0.51 148 0 0 5 40 40 11 30 3.8 39 105 -54 6 4 19 5 17 7 6 8 50 5 12 38 -0.51 149 0 0 5 50 52 11 29 58.2 40 106 -55 6 14 32 5 27 17 6 19 4 5 22 48 -0.51 150 0 0 6 1 30 11 29 52.5 41 106 -56 6 25 11 5 37 53 6 29 43 5 33 23 -0.51 151 0 0 6 12 33 11 29 46.7 42 107 -57 6 36 16 5 48 55 6 40 49 5 44 24 -0.51 152 0 0 6 24 2 11 29 40.8 43 107 -58 6 47 47 6 0 22 6 52 20 5 55 51 -0.51 153 0 0 6 35 56 11 29 34.8 43 108 -59 6 59 43 6 12 14 7 4 16 6 7 43 -0.51 154 0 0 6 48 15 11 29 28.7 44 108 -60 7 12 5 6 24 31 7 16 38 6 20 0 -0.51 155 0 0 7 1 0 11 29 22.5 45 109 -61 7 24 51 6 37 14 7 29 25 6 32 42 -0.51 156 0 0 7 14 9 11 29 16.2 46 110 -62 7 38 3 6 50 21 7 42 37 6 45 49 -0.51 157 0 0 7 27 43 11 29 9.8 47 110 -63 7 51 39 7 3 53 7 56 13 6 59 20 -0.51 158 0 0 7 41 42 11 29 3.3 48 111 -64 8 5 39 7 17 49 8 10 15 7 13 16 -0.51 159 0 0 7 56 4 11 28 56.8 48 112 -65 8 20 4 7 32 10 8 24 40 7 27 36 -0.51 160 0 0 8 10 51 11 28 50.1 49 113 -66 8 34 53 7 46 54 8 39 29 7 42 20 -0.51 161 0 0 8 26 2 11 28 43.4 50 114 -67 8 50 6 8 2 2 8 54 43 7 57 28 -0.51 162 0 0 8 41 36 11 28 36.5 51 114 -68 9 5 43 8 17 34 9 10 20 8 13 0 -0.51 163 0 0 8 57 33 11 28 29.6 52 115 -69 9 21 43 8 33 29 9 26 20 8 28 54 -0.52 164 0 0 9 13 54 11 28 22.7 52 116 -70 9 38 6 8 49 47 9 42 44 8 45 12 -0.52 165 0 0 9 30 37 11 28 15.6 53 117 -71 9 54 52 9 6 28 9 59 30 9 1 52 -0.52 166 0 0 9 47 43 11 28 8.5 54 119 -72 10 12 1 9 23 32 10 16 40 9 18 55 -0.52 167 0 0 10 5 12 11 28 1.3 54 120 -73 10 29 32 9 40 57 10 34 11 9 36 20 -0.52 168 0 0 10 23 2 11 27 54.0 55 121 -74 10 47 24 9 58 45 10 52 4 9 54 7 -0.52 169 0 0 10 41 14 11 27 46.7 56 122 -75 11 5 39 10 16 54 11 10 19 10 12 16 -0.52 170 0 0 10 59 47 11 27 39.3 56 124 -76 11 24 15 10 35 25 11 28 56 10 30 46 -0.52 171 0 0 11 18 41 11 27 31.8 57 125 -77 11 43 12 10 54 17 11 47 54 10 49 37 -0.52 172 0 0 11 37 56 11 27 24.3 58 126 -78 12 2 30 11 13 29 12 7 12 11 8 49 -0.52 173 0 0 11 57 32 11 27 16.8 58 128 -79 12 22 8 11 33 1 12 26 51 11 28 21 -0.52 174 0 0 12 17 27 11 27 9.2 59 130 -80 12 42 6 11 52 54 12 46 49 11 48 13 -0.52 175 0 0 12 37 42 11 27 1.5 59 131 -80 13 2 24 12 13 6 13 7 8 12 8 25 -0.52 176 0 0 12 58 16 11 26 53.8 60 133 -81 13 23 1 12 33 38 13 27 45 12 28 56 -0.52 177 0 0 13 19 10 11 26 46.1 60 135 -82 13 43 57 12 54 28 13 48 42 12 49 46 -0.52 178 0 0 13 40 21 11 26 38.3 60 136 -83 14 5 11 13 15 37 14 9 57 13 10 54 -0.52 179 0 0 14 1 51 11 26 30.6 61 138 -83 14 26 44 13 37 3 14 31 30 13 32 20 -0.52 -180 0 0 14 23 38 11 26 22.7 61 140 -84 14 48 34 13 58 48 14 53 20 13 54 4 -0.52 -179 0 0 14 45 42 11 26 14.9 61 142 -84 15 10 41 14 20 49 15 15 28 14 16 5 -0.52 -178 0 0 15 8 3 11 26 7.0 62 144 -85 15 33 5 14 43 7 15 37 52 14 38 22 -0.52 -177 0 0 15 30 40 11 25 59.1 62 146 -85 15 55 45 15 5 42 16 0 33 15 0 56 -0.52 -176 0 0 15 53 33 11 25 51.2 62 149 -84 16 18 40 15 28 32 16 23 29 15 23 46 -0.52 -175 0 0 16 16 41 11 25 43.3 62 151 -84 16 41 51 15 51 37 16 46 40 15 46 51 -0.52 -174 0 0 16 40 4 11 25 35.3 62 153 -84 17 5 17 16 14 57 17 10 7 16 10 10 -0.52 -173 0 0 17 3 41 11 25 27.4 62 155 -83 17 28 57 16 38 32 17 33 47 16 33 44 -0.52 -172 0 0 17 27 32 11 25 19.5 62 157 -82 17 52 50 17 2 20 17 57 41 16 57 32 -0.52 -171 0 0 17 51 36 11 25 11.6 62 160 -82 18 16 57 17 26 21 18 21 48 17 21 33 -0.52 -170 0 0 18 15 53 11 25 3.6 62 162 -81 18 41 16 17 50 35 18 46 8 17 45 46 -0.52 -169 0 0 18 40 21 11 24 55.7 62 164 -80 19 5 47 18 15 1 19 10 40 18 10 12 -0.52 -168 0 0 19 5 1 11 24 47.8 62 166 -79 19 30 30 18 39 39 19 35 23 18 34 49 -0.52 -167 0 0 19 29 52 11 24 40.0 62 168 -78 19 55 23 19 4 27 20 0 17 18 59 37 -0.52 -166 0 0 19 54 53 11 24 32.1 62 170 -77 20 20 27 19 29 26 20 25 21 19 24 35 -0.52 -165 0 0 20 20 4 11 24 24.3 61 173 -76 20 45 41 19 54 35 20 50 35 19 49 43 -0.52 -164 0 0 20 45 24 11 24 16.5 61 175 -75 21 11 3 20 19 52 21 15 57 20 15 1 -0.52 -163 0 0 21 10 53 11 24 8.8 61 177 -74 21 36 34 20 45 19 21 41 29 20 40 26 -0.53 -162 0 0 21 36 29 11 24 1.0 60 179 -73 22 2 12 21 10 53 22 7 8 21 6 0 -0.53 -161 0 0 22 2 13 11 23 53.4 60 181 -72 22 27 58 21 36 34 22 32 54 21 31 41 -0.53 -160 0 0 22 28 3 11 23 45.7 59 182 -71 22 53 50 22 2 22 22 58 46 21 57 29 -0.53 -159 0 0 22 53 59 11 23 38.1 59 184 -70 23 19 48 22 28 16 23 24 45 22 23 22 -0.53 -158 0 0 23 20 0 11 23 30.6 58 186 -70 23 45 51 22 54 16 23 50 48 22 49 21 -0.53 -157 0 0 23 46 6 11 23 23.1 58 188 -69 24 11 59 23 20 20 24 16 56 23 15 25 -0.53 -156 0 0 24 12 16 11 23 15.7 57 189 -68 24 38 11 23 46 28 24 43 8 23 41 33 -0.53 -155 0 0 24 38 29 11 23 8.4 57 191 -67 25 4 25 24 12 39 25 9 23 24 7 44 -0.53 -154 0 0 25 4 45 11 23 1.1 56 193 -66 25 30 43 24 38 53 25 35 41 24 33 58 -0.53 -153 0 0 25 31 2 11 22 53.9 55 194 -65 25 57 2 25 5 9 26 2 0 25 0 14 -0.53 -152 0 0 25 57 21 11 22 46.7 55 196 -64 26 23 22 25 31 27 26 28 21 25 26 31 -0.53 -151 0 0 26 23 41 11 22 39.7 54 197 -63 26 49 43 25 57 45 26 54 42 25 52 49 -0.53 -150 0 0 26 50 0 11 22 32.7 53 198 -62 27 16 4 26 24 3 27 21 3 26 19 7 -0.53 -149 0 0 27 16 19 11 22 25.8 53 200 -61 27 42 23 26 50 21 27 47 23 26 45 24 -0.53 -148 0 0 27 42 36 11 22 19.0 52 201 -60 28 8 42 27 16 37 28 13 41 27 11 41 -0.53 -147 0 0 28 8 51 11 22 12.2 51 202 -59 28 34 58 27 42 52 28 39 58 27 37 55 -0.53 -146 0 0 28 35 4 11 22 5.6 51 204 -58 29 1 11 28 9 4 29 6 11 28 4 6 -0.53 -145 0 0 29 1 13 11 21 59.0 50 205 -57 29 27 21 28 35 12 29 32 21 28 30 15 -0.53 -144 0 0 29 27 18 11 21 52.6 49 206 -56 29 53 26 29 1 17 29 58 27 28 56 19 -0.53 -143 0 0 29 53 18 11 21 46.2 48 207 -55 30 19 27 29 27 17 30 24 28 29 22 19 -0.53 -142 0 0 30 19 14 11 21 39.9 48 208 -54 30 45 23 29 53 11 30 50 23 29 48 14 -0.53 -141 0 0 30 45 3 11 21 33.8 47 209 -53 31 11 12 30 19 0 31 16 12 30 14 3 -0.53 -140 0 0 31 10 45 11 21 27.7 46 210 -52 31 36 55 30 44 43 31 41 55 30 39 45 -0.53 -139 0 0 31 36 21 11 21 21.8 45 211 -51 32 2 30 31 10 19 32 7 31 31 5 21 -0.53 -138 0 0 32 1 48 11 21 15.9 44 212 -50 32 27 58 31 35 46 32 32 58 31 30 49 -0.53 -137 0 0 32 27 8 11 21 10.2 44 213 -49 32 53 17 32 1 6 32 58 17 31 56 9 -0.53 -136 0 0 32 52 18 11 21 4.6 43 214 -48 33 18 27 32 26 17 33 23 27 32 21 19 -0.53 -135 0 0 33 17 19 11 20 59.1 42 215 -48 33 43 27 32 51 18 33 48 27 32 46 21 -0.53 -134 0 0 33 42 10 11 20 53.7 41 216 -47 34 8 17 33 16 10 34 13 17 33 11 13 -0.53 -133 0 0 34 6 51 11 20 48.4 40 217 -46 34 32 57 33 40 51 34 37 57 33 35 54 -0.53 -132 0 0 34 31 20 11 20 43.2 40 218 -45 34 57 25 34 5 21 35 2 25 34 0 24 -0.53 -131 0 0 34 55 37 11 20 38.1 39 219 -44 35 21 42 34 29 40 35 26 42 34 24 43 -0.53 -130 0 0 35 19 43 11 20 33.2 38 220 -43 35 45 46 34 53 46 35 50 46 34 48 50 -0.53 -129 0 0 35 43 36 11 20 28.3 37 220 -42 36 9 38 35 17 41 36 14 37 35 12 44 -0.53 -128 0 0 36 7 16 11 20 23.6 36 221 -41 36 33 17 35 41 22 36 38 16 35 36 26 -0.53 -127 0 0 36 30 42 11 20 19.0 35 222 -40 36 56 42 36 4 50 37 1 41 35 59 54 -0.53 -126 0 0 36 53 55 11 20 14.5 35 223 -40 37 19 53 36 28 4 37 24 51 36 23 8 -0.53 -125 0 0 37 16 53 11 20 10.2 34 224 -39 37 42 50 36 51 4 37 47 48 36 46 8 -0.53 -124 0 0 37 39 37 11 20 5.9 33 224 -38 38 5 31 37 13 49 38 10 29 37 8 54 -0.53 -123 0 0 38 2 5 11 20 1.8 32 225 -37 38 27 58 37 36 19 38 32 55 37 31 25 -0.53 -122 0 0 38 24 18 11 19 57.7 31 226 -36 38 50 9 37 58 34 38 55 6 37 53 40 -0.53 -121 0 0 38 46 15 11 19 53.8 31 227 -35 39 12 4 38 20 33 39 17 1 38 15 39 -0.53 -120 0 0 39 7 56 11 19 50.1 30 228 -34 39 33 43 38 42 16 39 38 39 38 37 23 -0.53 -119 0 0 39 29 21 11 19 46.4 29 228 -34 39 55 5 39 3 43 40 0 1 38 58 50 -0.53 -118 0 0 39 50 28 11 19 42.8 28 229 -33 40 16 11 39 24 53 40 21 6 39 20 0 -0.53 -117 0 0 40 11 19 11 19 39.4 27 230 -32 40 36 59 39 45 46 40 41 54 39 40 54 -0.53 -116 0 0 40 31 53 11 19 36.0 27 231 -31 40 57 30 40 6 22 41 2 25 40 1 30 -0.53 -115 0 0 40 52 9 11 19 32.8 26 231 -30 41 17 44 40 26 40 41 22 38 40 21 49 -0.54 -114 0 0 41 12 7 11 19 29.7 25 232 -30 41 37 39 40 46 41 41 42 33 40 41 50 -0.54 -113 0 0 41 31 47 11 19 26.7 24 233 -29 41 57 17 41 6 24 42 2 10 41 1 33 -0.54 -112 0 0 41 51 9 11 19 23.8 23 234 -28 42 16 36 41 25 48 42 21 29 41 20 59 -0.54 -111 0 0 42 10 13 11 19 21.0 23 234 -27 42 35 37 41 44 55 42 40 29 41 40 5 -0.54 -110 0 0 42 28 58 11 19 18.3 22 235 -26 42 54 20 42 3 42 42 59 11 41 58 54 -0.54 -109 0 0 42 47 24 11 19 15.7 21 236 -26 43 12 43 42 22 12 43 17 34 42 17 24 -0.54 -108 0 0 43 5 32 11 19 13.3 20 236 -25 43 30 48 42 40 22 43 35 38 42 35 35 -0.54 -107 0 0 43 23 21 11 19 10.9 20 237 -24 43 48 34 42 58 14 43 53 23 42 53 27 -0.54 -106 0 0 43 40 50 11 19 8.6 19 238 -23 44 6 0 43 15 46 44 10 50 43 11 0 -0.54 -105 0 0 43 58 1 11 19 6.5 18 239 -23 44 23 8 43 32 59 44 27 56 43 28 13 -0.54 -104 0 0 44 14 52 11 19 4.4 17 239 -22 44 39 56 43 49 54 44 44 44 43 45 8 -0.54 -103 0 0 44 31 23 11 19 2.4 17 240 -21 44 56 25 44 6 28 45 1 12 44 1 43 -0.54 -102 0 0 44 47 36 11 19 0.5 16 241 -20 45 12 34 44 22 44 45 17 21 44 17 59 -0.54 -101 0 0 45 3 29 11 18 58.8 15 242 -20 45 28 24 44 38 39 45 33 10 44 33 56 -0.54 -100 0 0 45 19 2 11 18 57.1 14 242 -19 45 43 54 44 54 16 45 48 40 44 49 33 -0.54 - 99 0 0 45 34 16 11 18 55.5 14 243 -18 45 59 5 45 9 33 46 3 50 45 4 50 -0.54 - 98 0 0 45 49 10 11 18 54.0 13 244 -18 46 13 56 45 24 30 46 18 41 45 19 48 -0.54 - 97 0 0 46 3 45 11 18 52.6 12 244 -17 46 28 28 45 39 8 46 33 12 45 34 26 -0.54 - 96 0 0 46 18 0 11 18 51.3 11 245 -16 46 42 40 45 53 26 46 47 23 45 48 45 -0.54 - 95 0 0 46 31 55 11 18 50.0 11 246 -15 46 56 32 46 7 24 47 1 15 46 2 44 -0.54 - 94 0 0 46 45 31 11 18 48.9 10 247 -15 47 10 5 46 21 3 47 14 47 46 16 23 -0.54 - 93 0 0 46 58 47 11 18 47.8 9 247 -14 47 23 18 46 34 22 47 28 0 46 29 43 -0.54 - 92 0 0 47 11 44 11 18 46.9 9 248 -13 47 36 12 46 47 21 47 40 53 46 42 43 -0.54 - 91 0 0 47 24 21 11 18 46.0 8 249 -13 47 48 46 47 0 1 47 53 26 46 55 23 -0.54 - 90 0 0 47 36 38 11 18 45.2 7 250 -12 48 1 0 47 12 21 48 5 40 47 7 44 -0.54 - 89 0 0 47 48 36 11 18 44.4 6 250 -11 48 12 55 47 24 22 48 17 34 47 19 45 -0.54 - 88 0 0 48 0 14 11 18 43.8 6 251 -11 48 24 31 47 36 3 48 29 9 47 31 27 -0.54 - 87 0 0 48 11 33 11 18 43.2 5 252 -10 48 35 47 47 47 25 48 40 25 47 42 49 -0.55 - 86 0 0 48 22 33 11 18 42.7 4 253 -9 48 46 44 47 58 28 48 51 21 47 53 52 -0.55 - 85 0 0 48 33 13 11 18 42.3 4 253 -9 48 57 21 48 9 10 49 1 58 48 4 36 -0.55 - 84 0 0 48 43 34 11 18 41.9 3 254 -8 49 7 39 48 19 34 49 12 16 48 15 0 -0.56 - 83 0 0 48 53 36 11 18 41.7 2 255 -7 49 17 38 48 29 38 49 22 15 48 25 4 -0.57 - 82 0 0 49 3 18 11 18 41.5 2 256 -7 49 27 18 48 39 23 49 31 54 48 34 50 -0.59 - 81 0 0 49 12 41 11 18 41.3 1 256 -6 49 36 39 48 48 49 49 41 14 48 44 16 -0.63 - 80 0 0 49 21 46 11 18 41.3 0 257 -6 49 45 41 48 57 56 49 50 15 48 53 23 -0.88 Uncertainty in time = +/- 3 secs Prediction of 2022 Oct 17.0 Data for the target star ------------------------ * name: TYC 5285-00026-1 * constellation : Cetus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 02 33 18.0602 DE: -08 18 22.370 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 02 33 18.0602 DE: -08 18 22.370 * position source: Gaia EDR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 11.4 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (850) Altona asteroid class: approx. diameter [km]: 76 approx. diameter ["]: 0.046 distance from Earth [AU]: 2.30670 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#61 date of fit: 2022 Sep 21 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): 0.022", 0.004", 68.46° remarks: * orbital elements for (850)Altona : Mean anomaly = 124.1838388826 deg Arg. of pericenter = 134.7930823255 deg Long. of node = 121.0063665210 deg Inclination = 15.5195685491 deg Eccentricity = 0.1281999205 Semimajor axis = 3.0005110936 AU Perihelion dist = 2.6158458098 AU Mag: H = 9.71, G = 0.15 Epoch of elements : MJD 59872.47576389 TDT (2022 Oct 20.4758) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#612022Sep21,5.40,2022,10,20,11.422631,-0.175860,0.427333,-7.361910,-3.025702,-0.001382,0.001854,0.000001,0.000001 -161.6361,-8.2046,4.86,-10.42,False TYC 5285-00026-1,2.55501672,-8.3062139,0.00,11.42,0.00,0.0,0,,2.57389055,-8.2046260,3.24,0.00,0,0,0 850,Altona,14.60,76.2,2.3067,0,0,-1.890,-11.53,,3.8,0 0,124.0936,2022,10,20,134.7931,121.0064,15.5196,0.12820,3.00051,2.61585,9.72,5.0,0.15 1.095,0.0220,0.0043,68,0.0043,Known errors,-1.00,-1,-1,-1 20221020_0026-1,59868.96 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2022 Oct 16, 23:05 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org