IOTA/IOTA-ES occultation update for (54) Alexandra / UCAC4-360-202950 event on 2023 Oct 08, 05:11 UT Visible from W USA Summary ------- On 2023 Oct 08 UT, the 152.1 km diameter asteroid (54) Alexandra will occult a 12.5 mag star in the constellation Sagittarius 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 0.54 mag to 12.01 mag (the magnitude of the asteroid) for at most 10.960 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: 2023 Oct 08, 05:04 - 2023 Oct 08, 05:18 * geocentric midpoint of event [JD]: 2460225.71643683 * magnitude of target star: 12.48 * magnitude drop [mag]: 0.54 * estimated maximum duration [s]: 10.960 * Moon: 34 % sunlit, 170° distance * Sun: 103° distance * rough path description: W USA The occultation path -------------------- * approximate projected width [km]: 174 * 1 sigma uncertainty interval [path widths]: +/- 0.01 * 1 sigma uncertainty interval [seconds]: +/- 1.5 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.015, +/- 0.007) * 1 sigma uncertainty ellipse (major, minor, PA): (0.017", 0.001", 65°) * approx speed of asteroid's shadow [km/s]: 13.8723 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4-360-202950 by 54 Alexandra on 2023 Oct 8 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 118 0 0 3 22 2 5 4 58.9 0 108 70 2 32 49 4 11 40 2 32 1 4 12 29 .... 119 0 0 3 2 59 5 4 59.1 1 108 70 2 13 54 3 52 28 2 13 6 3 53 17 -0.27 120 0 0 2 44 31 5 4 59.4 3 108 69 1 55 34 3 33 53 1 54 46 3 34 41 -0.39 121 0 0 2 26 40 5 4 59.9 4 108 68 1 37 50 3 15 54 1 37 2 3 16 42 -0.44 122 0 0 2 9 24 5 5 0.6 5 108 67 1 20 42 2 58 31 1 19 54 2 59 19 -0.46 123 0 0 1 52 45 5 5 1.4 6 108 66 1 4 10 2 41 44 1 3 22 2 42 32 -0.48 124 0 0 1 36 43 5 5 2.5 7 108 66 0 48 14 2 25 35 0 47 27 2 26 23 -0.49 125 0 0 1 21 17 5 5 3.7 8 108 65 0 32 55 2 10 2 0 32 8 2 10 50 -0.50 126 0 0 1 6 28 5 5 5.0 9 108 64 0 18 12 1 55 7 0 17 25 1 55 54 -0.51 127 0 0 0 52 16 5 5 6.5 10 108 63 0 4 6 1 40 48 0 3 19 1 41 36 -0.51 128 0 0 0 38 40 5 5 8.2 11 108 62 - 0 9 23 1 27 7 - 0 10 10 1 27 55 -0.52 129 0 0 0 25 43 5 5 10.1 12 108 61 - 0 22 15 1 14 3 - 0 23 2 1 14 51 -0.52 130 0 0 0 13 22 5 5 12.1 13 108 60 - 0 34 31 1 1 37 - 0 35 17 1 2 25 -0.52 131 0 0 0 1 39 5 5 14.3 14 109 59 - 0 46 9 0 49 49 - 0 46 55 0 50 36 -0.53 132 0 0 - 0 9 27 5 5 16.6 15 109 58 - 0 57 10 0 38 38 - 0 57 56 0 39 26 -0.53 133 0 0 - 0 19 55 5 5 19.1 16 109 57 - 1 7 33 0 28 6 - 1 8 20 0 28 53 -0.53 134 0 0 - 0 29 45 5 5 21.8 17 109 56 - 1 17 20 0 18 11 - 1 18 6 0 18 58 -0.53 135 0 0 - 0 38 58 5 5 24.6 18 109 55 - 1 26 28 0 8 54 - 1 27 15 0 9 41 -0.54 136 0 0 - 0 47 33 5 5 27.6 19 109 54 - 1 34 59 0 0 16 - 1 35 46 0 1 3 -0.54 137 0 0 - 0 55 30 5 5 30.7 20 109 53 - 1 42 53 - 0 7 45 - 1 43 39 - 0 6 58 -0.54 138 0 0 - 1 2 49 5 5 34.0 21 109 52 - 1 50 9 - 0 15 7 - 1 50 55 - 0 14 20 -0.54 139 0 0 - 1 9 30 5 5 37.4 22 109 51 - 1 56 47 - 0 21 51 - 1 57 33 - 0 21 4 -0.54 140 0 0 - 1 15 33 5 5 41.0 23 109 50 - 2 2 48 - 0 27 56 - 2 3 34 - 0 27 9 -0.54 141 0 0 - 1 20 58 5 5 44.7 24 109 49 - 2 8 10 - 0 33 23 - 2 8 56 - 0 32 36 -0.54 142 0 0 - 1 25 44 5 5 48.5 25 109 48 - 2 12 55 - 0 38 12 - 2 13 41 - 0 37 25 -0.55 143 0 0 - 1 29 52 5 5 52.6 26 109 47 - 2 17 2 - 0 42 22 - 2 17 47 - 0 41 35 -0.55 144 0 0 - 1 33 22 5 5 56.7 27 109 46 - 2 20 30 - 0 45 53 - 2 21 16 - 0 45 6 -0.55 145 0 0 - 1 36 14 5 6 1.0 28 110 45 - 2 23 21 - 0 48 45 - 2 24 6 - 0 47 58 -0.55 146 0 0 - 1 38 27 5 6 5.5 29 110 44 - 2 25 33 - 0 50 59 - 2 26 19 - 0 50 12 -0.55 147 0 0 - 1 40 1 5 6 10.0 30 110 43 - 2 27 7 - 0 52 33 - 2 27 53 - 0 51 47 -0.55 148 0 0 - 1 40 57 5 6 14.8 31 110 42 - 2 28 3 - 0 53 29 - 2 28 48 - 0 52 43 -0.55 149 0 0 - 1 41 14 5 6 19.6 32 110 41 - 2 28 20 - 0 53 46 - 2 29 6 - 0 52 59 -0.55 150 0 0 - 1 40 52 5 6 24.6 33 110 40 - 2 27 59 - 0 53 24 - 2 28 45 - 0 52 37 -0.55 151 0 0 - 1 39 52 5 6 29.7 34 111 39 - 2 26 59 - 0 52 22 - 2 27 45 - 0 51 36 -0.55 152 0 0 - 1 38 12 5 6 35.0 35 111 38 - 2 25 21 - 0 50 42 - 2 26 7 - 0 49 55 -0.55 153 0 0 - 1 35 54 5 6 40.4 35 111 37 - 2 23 4 - 0 48 22 - 2 23 50 - 0 47 35 -0.55 154 0 0 - 1 32 57 5 6 45.9 36 111 36 - 2 20 9 - 0 45 23 - 2 20 55 - 0 44 36 -0.55 155 0 0 - 1 29 20 5 6 51.6 37 112 35 - 2 16 34 - 0 41 44 - 2 17 20 - 0 40 57 -0.56 156 0 0 - 1 25 5 5 6 57.3 38 112 34 - 2 12 21 - 0 37 26 - 2 13 7 - 0 36 39 -0.56 157 0 0 - 1 20 10 5 7 3.3 39 112 33 - 2 7 29 - 0 32 29 - 2 8 16 - 0 31 42 -0.56 158 0 0 - 1 14 36 5 7 9.3 40 113 32 - 2 1 58 - 0 26 52 - 2 2 45 - 0 26 5 -0.56 159 0 0 - 1 8 23 5 7 15.4 41 113 31 - 1 55 49 - 0 20 35 - 1 56 35 - 0 19 48 -0.56 160 0 0 - 1 1 30 5 7 21.7 42 113 30 - 1 49 0 - 0 13 38 - 1 49 46 - 0 12 51 -0.56 161 0 0 - 0 53 58 5 7 28.1 43 114 29 - 1 41 31 - 0 6 2 - 1 42 18 - 0 5 15 -0.56 162 0 0 - 0 45 46 5 7 34.7 44 114 28 - 1 33 24 0 2 14 - 1 34 11 0 3 1 -0.56 163 0 0 - 0 36 55 5 7 41.3 45 115 27 - 1 24 37 0 11 10 - 1 25 24 0 11 58 -0.56 164 0 0 - 0 27 24 5 7 48.1 45 116 26 - 1 15 12 0 20 46 - 1 15 58 0 21 34 -0.56 165 0 0 - 0 17 14 5 7 54.9 46 116 25 - 1 5 6 0 31 2 - 1 5 53 0 31 50 -0.56 166 0 0 - 0 6 23 5 8 1.9 47 117 24 - 0 54 22 0 41 58 - 0 55 8 0 42 46 -0.56 167 0 0 0 5 7 5 8 9.0 48 117 23 - 0 42 57 0 53 34 - 0 43 44 0 54 22 -0.56 168 0 0 0 17 17 5 8 16.2 49 118 22 - 0 30 54 1 5 51 - 0 31 41 1 6 38 -0.56 169 0 0 0 30 6 5 8 23.5 50 119 21 - 0 18 11 1 18 47 - 0 18 58 1 19 35 -0.56 170 0 0 0 43 36 5 8 31.0 50 120 20 - 0 4 48 1 32 23 - 0 5 35 1 33 11 -0.56 171 0 0 0 57 45 5 8 38.5 51 121 19 0 9 14 1 46 40 0 8 27 1 47 28 -0.56 172 0 0 1 12 34 5 8 46.1 52 122 18 0 23 56 2 1 37 0 23 9 2 2 25 -0.56 173 0 0 1 28 3 5 8 53.8 53 123 16 0 39 17 2 17 14 0 38 30 2 18 2 -0.56 174 0 0 1 44 12 5 9 1.7 53 124 15 0 55 18 2 33 31 0 54 31 2 34 19 -0.56 175 0 0 2 1 1 5 9 9.6 54 125 14 1 11 59 2 50 28 1 11 11 2 51 17 -0.56 176 0 0 2 18 30 5 9 17.6 55 126 13 1 29 19 3 8 6 1 28 31 3 8 54 -0.56 177 0 0 2 36 38 5 9 25.7 55 127 12 1 47 18 3 26 23 1 46 30 3 27 12 -0.56 178 0 0 2 55 26 5 9 33.9 56 129 11 2 5 57 3 45 20 2 5 9 3 46 9 -0.56 179 0 0 3 14 53 5 9 42.2 57 130 10 2 25 15 4 4 57 2 24 27 4 5 46 -0.56 -180 0 0 3 35 0 5 9 50.5 57 132 9 2 45 12 4 25 14 2 44 24 4 26 3 -0.56 -179 0 0 3 55 46 5 9 59.0 58 133 8 3 5 49 4 46 10 3 5 0 4 46 59 -0.56 -178 0 0 4 17 11 5 10 7.5 58 135 7 3 27 4 5 7 45 3 26 15 5 8 35 -0.56 -177 0 0 4 39 16 5 10 16.0 59 137 6 3 48 58 5 30 0 3 48 9 5 30 50 -0.56 -176 0 0 5 1 59 5 10 24.7 59 138 5 4 11 30 5 52 54 4 10 41 5 53 44 -0.56 -175 0 0 5 25 20 5 10 33.4 59 140 4 4 34 41 6 16 27 4 33 51 6 17 17 -0.56 -174 0 0 5 49 20 5 10 42.1 60 142 3 4 58 30 6 40 38 4 57 40 6 41 28 -0.56 -173 0 0 6 13 58 5 10 51.0 60 144 2 5 22 56 7 5 27 5 22 7 7 6 18 -0.56 -172 0 0 6 39 13 5 10 59.8 60 146 0 5 48 1 7 30 54 5 47 11 7 31 45 -0.56 -171 0 0 7 5 6 5 11 8.7 60 148 -1 6 13 42 7 56 59 6 12 52 7 57 50 -0.56 -170 0 0 7 31 36 5 11 17.7 61 150 -2 6 40 0 8 23 41 6 39 10 8 24 32 -0.56 -169 0 0 7 58 43 5 11 26.7 61 152 -3 7 6 55 8 51 0 7 6 4 8 51 51 -0.56 -168 0 0 8 26 25 5 11 35.7 61 154 -4 7 34 25 9 18 54 7 33 34 9 19 46 -0.56 -167 0 0 8 54 43 5 11 44.8 61 157 -5 8 2 31 9 47 25 8 1 40 9 48 17 -0.56 -166 0 0 9 23 37 5 11 53.8 61 159 -6 8 31 12 10 16 31 8 30 21 10 17 23 -0.56 -165 0 0 9 53 4 5 12 2.9 61 161 -7 9 0 28 10 46 11 8 59 36 10 47 3 -0.56 -164 0 0 10 23 6 5 12 12.0 60 163 -8 9 30 17 11 16 25 9 29 26 11 17 18 -0.56 -163 0 0 10 53 41 5 12 21.1 60 165 -9 10 0 40 11 47 13 9 59 48 11 48 6 -0.56 -162 0 0 11 24 48 5 12 30.2 60 167 -10 10 31 35 12 18 33 10 30 43 12 19 26 -0.56 -161 0 0 11 56 28 5 12 39.3 60 169 -11 11 3 2 12 50 26 11 2 10 12 51 19 -0.56 -160 0 0 12 28 38 5 12 48.4 59 172 -12 11 35 0 13 22 49 11 34 7 13 23 42 -0.56 -159 0 0 13 1 19 5 12 57.5 59 174 -13 12 7 28 13 55 42 12 6 35 13 56 36 -0.56 -158 0 0 13 34 29 5 13 6.5 58 176 -14 12 40 25 14 29 5 12 39 33 14 29 59 -0.56 -157 0 0 14 8 7 5 13 15.5 58 177 -15 13 13 51 15 2 56 13 12 58 15 3 50 -0.56 -156 0 0 14 42 13 5 13 24.4 57 179 -16 13 47 45 15 37 14 13 46 52 15 38 8 -0.56 -155 0 0 15 16 45 5 13 33.4 57 181 -17 14 22 5 16 11 59 14 21 12 16 12 53 -0.56 -154 0 0 15 51 42 5 13 42.2 56 183 -18 14 56 50 16 47 9 14 55 57 16 48 3 -0.55 -153 0 0 16 27 4 5 13 51.0 56 185 -19 15 32 0 17 22 42 15 31 7 17 23 37 -0.55 -152 0 0 17 2 49 5 13 59.7 55 186 -20 16 7 34 17 58 39 16 6 40 17 59 34 -0.55 -151 0 0 17 38 56 5 14 8.4 54 188 -21 16 43 29 18 34 58 16 42 35 18 35 53 -0.55 -150 0 0 18 15 23 5 14 17.0 53 189 -22 17 19 45 19 11 37 17 18 51 19 12 32 -0.55 -149 0 0 18 52 10 5 14 25.5 53 191 -23 17 56 21 19 48 35 17 55 26 19 49 30 -0.55 -148 0 0 19 29 15 5 14 33.9 52 192 -24 18 33 15 20 25 51 18 32 20 20 26 46 -0.55 -147 0 0 20 6 36 5 14 42.2 51 194 -25 19 10 26 21 3 23 19 9 31 21 4 19 -0.55 -146 0 0 20 44 13 5 14 50.3 50 195 -26 19 47 53 21 41 10 19 46 58 21 42 6 -0.55 -145 0 0 21 22 4 5 14 58.4 49 196 -27 20 25 34 22 19 11 20 24 39 22 20 7 -0.55 -144 0 0 22 0 7 5 15 6.4 48 197 -28 21 3 27 22 57 24 21 2 32 22 58 20 -0.55 -143 0 0 22 38 21 5 15 14.2 48 199 -29 21 41 33 23 35 47 21 40 37 23 36 44 -0.55 -142 0 0 23 16 45 5 15 21.9 47 200 -30 22 19 48 24 14 20 22 18 52 24 15 17 -0.55 -141 0 0 23 55 17 5 15 29.5 46 201 -31 22 58 11 24 53 0 22 57 15 24 53 57 -0.55 -140 0 0 24 33 55 5 15 36.9 45 202 -31 23 36 41 25 31 46 23 35 46 25 32 43 -0.55 -139 0 0 25 12 38 5 15 44.2 44 203 -32 24 15 17 26 10 37 24 14 21 26 11 34 -0.55 -138 0 0 25 51 24 5 15 51.3 43 204 -33 24 53 57 26 49 31 24 53 1 26 50 28 -0.55 -137 0 0 26 30 13 5 15 58.3 42 205 -34 25 32 39 27 28 25 25 31 43 27 29 23 -0.55 -136 0 1 27 9 1 5 16 5.1 41 206 -35 26 11 22 28 7 20 26 10 26 28 8 18 -0.55 -135 0 1 27 47 49 5 16 11.7 40 207 -35 26 50 4 28 46 13 26 49 8 28 47 11 -0.55 -134 0 1 28 26 33 5 16 18.2 39 208 -36 27 28 44 29 25 3 27 27 47 29 26 0 -0.55 -133 0 1 29 5 14 5 16 24.5 38 209 -37 28 7 20 30 3 47 28 6 23 30 4 45 -0.55 -132 0 1 29 43 48 5 16 30.7 37 209 -37 28 45 51 30 42 26 28 44 54 30 43 24 -0.55 -131 0 1 30 22 16 5 16 36.6 36 210 -38 29 24 15 31 20 56 29 23 18 31 21 54 -0.55 -130 0 1 31 0 34 5 16 42.4 35 211 -39 30 2 31 31 59 18 30 1 34 32 0 16 -0.55 -129 0 1 31 38 43 5 16 48.0 34 212 -39 30 40 37 32 37 28 30 39 41 32 38 26 -0.55 -128 0 1 32 16 40 5 16 53.4 33 213 -40 31 18 33 33 15 27 31 17 36 33 16 25 -0.55 -127 0 1 32 54 24 5 16 58.7 32 214 -40 31 56 16 33 53 12 31 55 19 33 54 10 -0.55 -126 0 1 33 31 54 5 17 3.8 31 214 -41 32 33 46 34 30 42 32 32 49 34 31 40 -0.55 -125 0 1 34 9 8 5 17 8.6 30 215 -41 33 11 0 35 7 56 33 10 4 35 8 54 -0.55 -124 0 1 34 46 6 5 17 13.3 29 216 -42 33 47 59 35 44 53 33 47 2 35 45 50 -0.55 -123 0 1 35 22 45 5 17 17.9 28 217 -42 34 24 40 36 21 31 34 23 43 36 22 29 -0.55 -122 0 1 35 59 6 5 17 22.2 27 217 -43 35 1 3 36 57 49 35 0 6 36 58 47 -0.55 -121 0 1 36 35 6 5 17 26.4 26 218 -43 35 37 6 37 33 47 35 36 9 37 34 45 -0.55 -120 0 1 37 10 46 5 17 30.3 25 219 -44 36 12 48 38 9 23 36 11 52 38 10 21 -0.55 -119 0 1 37 46 3 5 17 34.1 24 220 -44 36 48 9 38 44 37 36 47 12 38 45 34 -0.55 -118 0 1 38 20 57 5 17 37.8 23 220 -44 37 23 7 39 19 26 37 22 11 39 20 24 -0.55 -117 0 1 38 55 27 5 17 41.2 22 221 -45 37 57 42 39 53 51 37 56 46 39 54 49 -0.55 -116 0 1 39 29 32 5 17 44.5 21 222 -45 38 31 52 40 27 51 38 30 56 40 28 49 -0.55 -115 0 1 40 3 12 5 17 47.6 20 223 -45 39 5 38 41 1 25 39 4 42 41 2 22 -0.55 -114 0 1 40 36 25 5 17 50.6 19 223 -45 39 38 57 41 34 32 39 38 1 41 35 29 -0.55 -113 0 1 41 9 12 5 17 53.4 18 224 -45 40 11 50 42 7 12 40 10 54 42 8 9 -0.55 -112 0 1 41 41 30 5 17 56.0 18 225 -46 40 44 16 42 39 23 40 43 20 42 40 20 -0.55 -111 0 1 42 13 21 5 17 58.5 17 225 -46 41 16 14 43 11 6 41 15 19 43 12 3 -0.55 -110 0 1 42 44 43 5 18 0.8 16 226 -46 41 47 45 43 42 21 41 46 49 43 43 17 -0.55 -109 0 1 43 15 37 5 18 3.0 15 227 -46 42 18 46 44 13 5 42 17 51 44 14 2 -0.55 -108 0 1 43 46 0 5 18 5.0 14 228 -46 42 49 18 44 43 20 42 48 23 44 44 17 -0.55 -107 0 1 44 15 54 5 18 6.9 13 228 -46 43 19 21 45 13 5 43 18 26 45 14 1 -0.55 -106 0 1 44 45 18 5 18 8.6 12 229 -46 43 48 55 45 42 19 43 48 0 45 43 15 -0.55 -105 0 1 45 14 12 5 18 10.2 11 230 -46 44 17 58 46 11 3 44 17 3 46 11 59 -0.55 -104 0 1 45 42 35 5 18 11.7 11 230 -46 44 46 31 46 39 16 44 45 36 46 40 12 -0.55 -103 0 1 46 10 27 5 18 13.0 10 231 -46 45 14 33 47 6 58 45 13 39 47 7 53 -0.55 -102 0 1 46 37 49 5 18 14.2 9 232 -46 45 42 5 47 34 8 45 41 11 47 35 4 -0.55 -101 0 1 47 4 40 5 18 15.3 8 233 -46 46 9 7 48 0 48 46 8 13 48 1 43 -0.55 -100 0 1 47 30 59 5 18 16.3 7 233 -46 46 35 37 48 26 57 46 34 43 48 27 52 -0.55 - 99 0 1 47 56 48 5 18 17.2 6 234 -46 47 1 37 48 52 34 47 0 43 48 53 29 -0.55 - 98 0 1 48 22 6 5 18 17.9 6 235 -46 47 27 6 49 17 40 47 26 12 49 18 35 -0.55 - 97 0 1 48 46 53 5 18 18.6 5 236 -45 47 52 4 49 42 16 47 51 11 49 43 10 -0.56 - 96 0 1 49 11 9 5 18 19.1 4 236 -45 48 16 32 50 6 20 48 15 38 50 7 14 -0.56 - 95 0 1 49 34 54 5 18 19.5 3 237 -45 48 40 29 50 29 53 48 39 36 50 30 47 -0.56 - 94 0 1 49 58 9 5 18 19.9 3 238 -45 49 3 55 50 52 56 49 3 2 50 53 50 -0.56 - 93 0 1 50 20 53 5 18 20.1 2 239 -45 49 26 51 51 15 28 49 25 58 51 16 22 -0.57 - 92 0 1 50 43 7 5 18 20.3 1 240 -44 49 49 17 51 37 30 49 48 24 51 38 24 -0.58 - 91 0 1 51 4 51 5 18 20.4 0 240 -44 50 11 13 .. .. .. 50 10 20 .. .. .. -0.65 - 90 0 0 .. .. .... .. .. .. .. .. .. 50 32 39 .. .. .. 50 31 47 .. .. .. .... Uncertainty in time = +/- 2 secs Prediction of 2023 Aug 27.0 Data for the target star ------------------------ * name: UCAC4-360-202950 * constellation : Sagittarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 19 55 50.3096 DE: -18 01 24.661 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 19 55 50.3096 DE: -18 01 24.661 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 12.5 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (54) Alexandra asteroid class: approx. diameter [km]: 152 approx. diameter ["]: 0.119 distance from Earth [AU]: 1.76020 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#195 date of fit: 2023 Aug 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): 0.017", 0.001", 65.107° remarks: * orbital elements for (54)Alexandra : Mean anomaly = 16.8043346412 deg Arg. of pericenter = 345.2999945673 deg Long. of node = 313.2298009665 deg Inclination = 11.7970013364 deg Eccentricity = 0.1966931663 Semimajor axis = 2.7105880506 AU Perihelion dist = 2.1774339044 AU Mag: H = 8.00, G = 0.15 Epoch of elements : MJD 60225.21652778 TDT (2023 Oct 08.2165) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#1952023Aug24,10.96,2023,10,8,5.194484,-0.210792,0.440308,7.063129,3.379246,0.005246,0.000978,0.000000,0.000000 -155.2002,-17.9611,99.01,-5.78,False UCAC4-360-202950,19.93064159,-18.0235169,0.00,12.48,0.00,0.0,0,,19.95340110,-17.9611432,0.54,0.00,0,0,1 54,Alexandra,12.01,152.100,1.7602,0,0,2.474,16.88,,7.6,0 0,16.7565,2023,10,8,345.3000,313.2298,11.7970,0.19669,2.71059,2.17743,7.87,5.0,0.15 1.008,0.0167,0.0010,65,0.0167,Known errors,-1.00,0,-1,-1 20231008_202950,60183.00 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Aug 26, 23:56 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org