IOTA/IOTA-ES occultation update for (54) Alexandra / TYC 7412-00470-1 event on 2023 Mar 14, 08:21 UT Visible from South America Summary ------- On 2023 Mar 14 UT, the 152.1 km diameter asteroid (54) Alexandra will occult a 11.3 mag star in the constellation Sagittarius for observers along a path across South America. In the case of an occultation, the combined light of the asteroid and the star will drop by 1.64 mag to 12.68 mag (the magnitude of the asteroid) for at most 5.140 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 Mar 14, 08:17 - 2023 Mar 14, 08:24 * geocentric midpoint of event [JD]: 2460017.84798100 * magnitude of target star: 11.31 * magnitude drop [mag]: 1.64 * estimated maximum duration [s]: 5.140 * Moon: 59 % sunlit, 28° distance * Sun: 72° distance * rough path description: South America The occultation path -------------------- * approximate projected width [km]: 168 * 1 sigma uncertainty interval [path widths]: +/- 0.04 * 1 sigma uncertainty interval [seconds]: +/- 0.9 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.016, +/- 0.005) * 1 sigma uncertainty ellipse (major, minor, PA): (0.017", 0.001", 74°) * approx speed of asteroid's shadow [km/s]: 29.5837 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 7412-00470-1 by 54 Alexandra on 2023 Mar 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 - 91 0 0 17 42 56 8 17 49.8 0 124 -56 16 48 21 .. .. .. 16 43 52 .. .. .. .... - 90 0 0 17 3 50 8 17 49.9 1 125 -55 16 9 24 17 58 44 16 4 55 18 3 18 -0.08 - 89 0 0 16 24 56 8 17 50.0 2 125 -55 15 30 39 17 19 42 15 26 12 17 24 14 -0.26 - 88 0 0 15 46 17 8 17 50.3 4 125 -54 14 52 9 16 40 53 14 47 42 16 45 24 -0.32 - 87 0 0 15 7 52 8 17 50.6 5 125 -53 14 13 53 16 2 18 14 9 27 16 6 49 -0.36 - 86 0 0 14 29 43 8 17 51.0 6 126 -52 13 35 54 15 23 59 13 31 28 15 28 29 -0.38 - 85 0 0 13 51 51 8 17 51.6 7 126 -52 12 58 13 14 45 57 12 53 48 14 50 27 -0.39 - 84 0 0 13 14 19 8 17 52.2 8 126 -51 12 20 50 14 8 14 12 16 26 14 12 43 -0.40 - 83 0 0 12 37 6 8 17 52.9 9 126 -50 11 43 48 13 30 51 11 39 25 13 35 18 -0.41 - 82 0 0 12 0 14 8 17 53.8 10 127 -49 11 7 7 12 53 48 11 2 45 12 58 15 -0.41 - 81 0 0 11 23 45 8 17 54.7 12 127 -48 10 30 48 12 17 8 10 26 27 12 21 33 -0.42 - 80 0 0 10 47 39 8 17 55.7 13 127 -47 9 54 53 11 40 50 9 50 33 11 45 15 -0.42 - 79 0 0 10 11 57 8 17 56.8 14 127 -46 9 19 22 11 4 57 9 15 2 11 9 21 -0.42 - 78 0 0 9 36 40 8 17 58.0 15 127 -46 8 44 16 10 29 29 8 39 58 10 33 52 -0.43 - 77 0 0 9 1 50 8 17 59.2 16 128 -45 8 9 37 9 54 27 8 5 20 9 58 49 -0.43 - 76 0 0 8 27 26 8 18 0.6 17 128 -44 7 35 26 9 19 52 7 31 9 9 24 13 -0.43 - 75 0 0 7 53 31 8 18 2.1 18 128 -43 7 1 42 8 45 45 6 57 26 8 50 5 -0.43 - 74 0 0 7 20 5 8 18 3.6 20 128 -42 6 28 27 8 12 7 6 24 12 8 16 26 -0.43 - 73 0 0 6 47 8 8 18 5.2 21 128 -41 5 55 42 7 38 59 5 51 28 7 43 17 -0.43 - 72 0 0 6 14 42 8 18 6.9 22 129 -40 5 23 28 7 6 21 5 19 15 7 10 38 -0.44 - 71 0 0 5 42 48 8 18 8.7 23 129 -39 4 51 45 6 34 14 4 47 33 6 38 30 -0.44 - 70 0 0 5 11 25 8 18 10.6 24 129 -38 4 20 33 6 2 40 4 16 22 6 6 55 -0.44 - 69 0 0 4 40 34 8 18 12.5 25 129 -37 3 49 54 5 31 37 3 45 44 5 35 51 -0.44 - 68 0 0 4 10 17 8 18 14.6 26 129 -36 3 19 48 5 1 8 3 15 39 5 5 21 -0.44 - 67 0 0 3 40 33 8 18 16.6 27 130 -35 2 50 15 4 31 13 2 46 7 4 35 25 -0.44 - 66 0 0 3 11 23 8 18 18.8 28 130 -34 2 21 17 4 1 51 2 17 9 4 6 2 -0.44 - 65 0 0 2 42 48 8 18 21.0 29 130 -33 1 52 53 3 33 5 1 48 46 3 37 15 -0.44 - 64 0 0 2 14 48 8 18 23.3 31 130 -32 1 25 4 3 4 53 1 20 58 3 9 3 -0.44 - 63 0 0 1 47 23 8 18 25.7 32 131 -31 0 57 50 2 37 18 0 53 45 2 41 26 -0.45 - 62 0 0 1 20 34 8 18 28.1 33 131 -30 0 31 12 2 10 18 0 27 8 2 14 25 -0.45 - 61 0 0 0 54 22 8 18 30.6 34 131 -29 0 5 10 1 43 54 0 1 7 1 48 1 -0.45 - 60 0 0 0 28 46 8 18 33.2 35 131 -28 - 0 20 15 1 18 7 - 0 24 17 1 22 13 -0.45 - 59 0 0 0 3 46 8 18 35.8 36 131 -27 - 0 45 4 0 52 58 - 0 49 5 0 57 2 -0.45 - 58 0 0 - 0 20 36 8 18 38.5 37 132 -26 - 1 9 16 0 28 25 - 1 13 17 0 32 29 -0.45 - 57 0 0 - 0 44 21 8 18 41.2 38 132 -25 - 1 32 51 0 4 30 - 1 36 51 0 8 33 -0.45 - 56 0 0 - 1 7 28 8 18 44.0 39 132 -24 - 1 55 49 - 0 18 47 - 1 59 47 - 0 14 45 -0.45 - 55 0 0 - 1 29 58 8 18 46.8 40 133 -23 - 2 18 9 - 0 41 27 - 2 22 7 - 0 37 25 -0.45 - 54 0 0 - 1 51 49 8 18 49.7 41 133 -21 - 2 39 51 - 1 3 28 - 2 43 48 - 0 59 28 -0.45 - 53 0 0 - 2 13 3 8 18 52.6 42 133 -20 - 3 0 55 - 1 24 51 - 3 4 52 - 1 20 51 -0.45 - 52 0 0 - 2 33 39 8 18 55.6 43 134 -19 - 3 21 22 - 1 45 36 - 3 25 18 - 1 41 37 -0.45 - 51 0 0 - 2 53 36 8 18 58.6 44 134 -18 - 3 41 10 - 2 5 42 - 3 45 5 - 2 1 44 -0.45 - 50 0 0 - 3 12 55 8 19 1.7 45 134 -17 - 4 0 21 - 2 25 10 - 4 4 15 - 2 21 12 -0.45 - 49 0 0 - 3 31 35 8 19 4.8 46 135 -16 - 4 18 53 - 2 43 58 - 4 22 46 - 2 40 2 -0.45 - 48 0 0 - 3 49 37 8 19 8.0 47 135 -15 - 4 36 47 - 3 2 8 - 4 40 40 - 2 58 12 -0.45 - 47 0 0 - 4 7 0 8 19 11.2 47 136 -14 - 4 54 2 - 3 19 40 - 4 57 55 - 3 15 44 -0.45 - 46 0 0 - 4 23 45 8 19 14.4 48 136 -13 - 5 10 39 - 3 36 32 - 5 14 31 - 3 32 37 -0.45 - 45 0 0 - 4 39 51 8 19 17.6 49 137 -12 - 5 26 38 - 3 52 45 - 5 30 29 - 3 48 51 -0.46 - 44 0 0 - 4 55 18 8 19 20.9 50 138 -11 - 5 41 58 - 4 8 20 - 5 45 49 - 4 4 26 -0.46 - 43 0 0 - 5 10 7 8 19 24.3 51 138 -10 - 5 56 40 - 4 23 15 - 6 0 30 - 4 19 22 -0.46 - 42 0 0 - 5 24 17 8 19 27.6 52 139 -9 - 6 10 44 - 4 37 32 - 6 14 33 - 4 33 39 -0.46 - 41 0 0 - 5 37 48 8 19 31.0 53 139 -8 - 6 24 9 - 4 51 10 - 6 27 58 - 4 47 18 -0.46 - 40 0 0 - 5 50 41 8 19 34.4 53 140 -7 - 6 36 55 - 5 4 8 - 6 40 44 - 5 0 17 -0.46 - 39 0 0 - 6 2 54 8 19 37.9 54 141 -6 - 6 49 4 - 5 16 28 - 6 52 52 - 5 12 37 -0.46 - 38 0 0 - 6 14 30 8 19 41.3 55 142 -5 - 7 0 33 - 5 28 8 - 7 4 21 - 5 24 18 -0.46 - 37 0 0 - 6 25 26 8 19 44.8 56 143 -4 - 7 11 25 - 5 39 10 - 7 15 12 - 5 35 20 -0.46 - 36 0 0 - 6 35 44 8 19 48.4 57 144 -3 - 7 21 38 - 5 49 33 - 7 25 24 - 5 45 43 -0.46 - 35 0 0 - 6 45 23 8 19 51.9 57 145 -2 - 7 31 12 - 5 59 16 - 7 34 59 - 5 55 27 -0.46 - 34 0 0 - 6 54 23 8 19 55.5 58 146 -1 - 7 40 9 - 6 8 21 - 7 43 55 - 6 4 32 -0.46 - 33 0 0 - 7 2 45 8 19 59.1 59 147 0 - 7 48 27 - 6 16 47 - 7 52 12 - 6 12 58 -0.46 - 32 0 0 - 7 10 29 8 20 2.7 59 148 1 - 7 56 7 - 6 24 34 - 7 59 52 - 6 20 46 -0.46 - 31 0 0 - 7 17 34 8 20 6.3 60 149 2 - 8 3 8 - 6 31 42 - 8 6 53 - 6 27 54 -0.46 - 30 0 0 - 7 24 0 8 20 9.9 61 151 3 - 8 9 32 - 6 38 12 - 8 13 16 - 6 34 24 -0.46 - 29 0 0 - 7 29 48 8 20 13.6 61 152 4 - 8 15 17 - 6 44 3 - 8 19 1 - 6 40 15 -0.46 - 28 0 0 - 7 34 58 8 20 17.3 62 153 5 - 8 20 24 - 6 49 15 - 8 24 8 - 6 45 27 -0.46 - 27 0 0 - 7 39 29 8 20 21.0 62 155 6 - 8 24 53 - 6 53 48 - 8 28 37 - 6 50 1 -0.46 - 26 0 0 - 7 43 21 8 20 24.7 63 156 7 - 8 28 44 - 6 57 42 - 8 32 28 - 6 53 55 -0.46 - 25 0 0 - 7 46 36 8 20 28.4 63 158 8 - 8 31 56 - 7 0 58 - 8 35 40 - 6 57 11 -0.46 - 24 0 0 - 7 49 11 8 20 32.1 63 160 9 - 8 34 31 - 7 3 35 - 8 38 15 - 6 59 48 -0.46 - 23 0 0 - 7 51 9 8 20 35.8 64 161 10 - 8 36 27 - 7 5 33 - 8 40 11 - 7 1 47 -0.46 - 22 0 0 - 7 52 28 8 20 39.6 64 163 11 - 8 37 46 - 7 6 53 - 8 41 30 - 7 3 6 -0.46 - 21 0 0 - 7 53 8 8 20 43.4 64 165 12 - 8 38 26 - 7 7 34 - 8 42 10 - 7 3 47 -0.46 - 20 0 0 - 7 53 11 8 20 47.1 65 167 13 - 8 38 28 - 7 7 36 - 8 42 12 - 7 3 50 -0.46 - 19 0 0 - 7 52 35 8 20 50.9 65 169 14 - 8 37 53 - 7 7 0 - 8 41 36 - 7 3 13 -0.46 - 18 0 0 - 7 51 20 8 20 54.7 65 171 15 - 8 36 39 - 7 5 45 - 8 40 23 - 7 1 58 -0.46 - 17 0 0 - 7 49 27 8 20 58.5 65 173 16 - 8 34 47 - 7 3 51 - 8 38 31 - 7 0 4 -0.46 - 16 0 0 - 7 46 56 8 21 2.2 65 175 17 - 8 32 17 - 7 1 18 - 8 36 1 - 6 57 32 -0.46 - 15 0 0 - 7 43 46 8 21 6.0 65 177 18 - 8 29 8 - 6 58 7 - 8 32 53 - 6 54 20 -0.46 - 14 0 0 - 7 39 58 8 21 9.8 65 179 19 - 8 25 22 - 6 54 17 - 8 29 6 - 6 50 30 -0.46 - 13 0 0 - 7 35 31 8 21 13.6 65 181 20 - 8 20 58 - 6 49 48 - 8 24 42 - 6 46 1 -0.46 - 12 0 0 - 7 30 26 8 21 17.4 65 183 21 - 8 15 55 - 6 44 41 - 8 19 39 - 6 40 53 -0.46 - 11 0 0 - 7 24 42 8 21 21.2 65 185 22 - 8 10 14 - 6 38 54 - 8 13 59 - 6 35 6 -0.46 - 10 0 0 - 7 18 20 8 21 25.0 65 187 23 - 8 3 55 - 6 32 29 - 8 7 40 - 6 28 41 -0.46 - 9 0 0 - 7 11 19 8 21 28.8 64 189 24 - 7 56 57 - 6 25 25 - 8 0 42 - 6 21 36 -0.46 - 8 0 0 - 7 3 40 8 21 32.6 64 191 25 - 7 49 21 - 6 17 41 - 7 53 7 - 6 13 53 -0.46 - 7 0 0 - 6 55 22 8 21 36.4 64 193 26 - 7 41 7 - 6 9 19 - 7 44 53 - 6 5 30 -0.46 - 6 0 0 - 6 46 25 8 21 40.2 63 195 27 - 7 32 15 - 6 0 18 - 7 36 1 - 5 56 29 -0.46 - 5 0 0 - 6 36 50 8 21 44.0 63 196 28 - 7 22 44 - 5 50 38 - 7 26 30 - 5 46 49 -0.46 - 4 0 0 - 6 26 35 8 21 47.7 62 198 29 - 7 12 34 - 5 40 19 - 7 16 21 - 5 36 29 -0.46 - 3 0 0 - 6 15 43 8 21 51.5 62 200 30 - 7 1 46 - 5 29 21 - 7 5 34 - 5 25 31 -0.46 - 2 0 0 - 6 4 11 8 21 55.2 61 201 31 - 6 50 20 - 5 17 44 - 6 54 8 - 5 13 53 -0.46 - 1 0 0 - 5 52 0 8 21 59.0 61 203 32 - 6 38 15 - 5 5 28 - 6 42 4 - 5 1 36 -0.46 0 0 0 - 5 39 11 8 22 2.7 60 204 33 - 6 25 32 - 4 52 32 - 6 29 21 - 4 48 40 -0.46 1 0 0 - 5 25 43 8 22 6.4 60 205 34 - 6 12 10 - 4 38 57 - 6 15 59 - 4 35 5 -0.46 2 0 0 - 5 11 36 8 22 10.1 59 207 35 - 5 58 9 - 4 24 44 - 6 1 59 - 4 20 51 -0.46 3 0 0 - 4 56 49 8 22 13.8 58 208 36 - 5 43 30 - 4 9 51 - 5 47 20 - 4 5 57 -0.46 4 0 0 - 4 41 25 8 22 17.5 58 209 37 - 5 28 12 - 3 54 19 - 5 32 3 - 3 50 25 -0.46 5 0 0 - 4 25 21 8 22 21.1 57 210 38 - 5 12 16 - 3 38 8 - 5 16 7 - 3 34 13 -0.46 6 0 0 - 4 8 38 8 22 24.7 56 211 39 - 4 55 41 - 3 21 17 - 4 59 33 - 3 17 22 -0.46 7 0 0 - 3 51 17 8 22 28.3 55 212 40 - 4 38 27 - 3 3 48 - 4 42 20 - 2 59 52 -0.46 8 0 0 - 3 33 17 8 22 31.9 55 213 41 - 4 20 35 - 2 45 39 - 4 24 29 - 2 41 42 -0.46 9 0 0 - 3 14 38 8 22 35.5 54 214 42 - 4 2 4 - 2 26 52 - 4 5 59 - 2 22 54 -0.46 10 0 0 - 2 55 20 8 22 39.0 53 215 43 - 3 42 55 - 2 7 25 - 3 46 50 - 2 3 27 -0.46 11 0 0 - 2 35 24 8 22 42.5 52 215 44 - 3 23 8 - 1 47 20 - 3 27 4 - 1 43 21 -0.46 12 0 0 - 2 14 49 8 22 46.0 51 216 45 - 3 2 42 - 1 26 36 - 3 6 39 - 1 22 36 -0.46 13 0 0 - 1 53 36 8 22 49.4 50 217 46 - 2 41 38 - 1 5 14 - 2 45 35 - 1 1 13 -0.46 14 0 0 - 1 31 44 8 22 52.8 49 218 47 - 2 19 56 - 0 43 12 - 2 23 54 - 0 39 11 -0.46 15 0 0 - 1 9 15 8 22 56.2 48 218 48 - 1 57 36 - 0 20 33 - 2 1 35 - 0 16 31 -0.46 16 0 0 - 0 46 7 8 22 59.5 48 219 49 - 1 34 38 0 2 45 - 1 38 38 0 6 48 -0.46 17 0 0 - 0 22 21 8 23 2.8 47 219 50 - 1 11 3 0 26 41 - 1 15 3 0 30 45 -0.46 18 0 0 0 2 2 8 23 6.1 46 220 51 - 0 46 50 0 51 14 - 0 50 51 0 55 19 -0.46 19 0 0 0 27 2 8 23 9.3 45 220 52 - 0 22 0 1 16 25 - 0 26 2 1 20 31 -0.46 20 0 0 0 52 40 8 23 12.5 44 221 53 0 3 27 1 42 14 - 0 0 36 1 46 20 -0.46 21 0 0 1 18 54 8 23 15.6 43 221 54 0 29 30 2 8 39 0 25 26 2 12 47 -0.46 22 0 0 1 45 45 8 23 18.7 42 222 55 0 56 10 2 35 41 0 52 5 2 39 50 -0.46 23 0 0 2 13 12 8 23 21.7 41 222 56 1 23 26 3 3 19 1 19 20 3 7 29 -0.46 24 0 0 2 41 15 8 23 24.7 40 223 57 1 51 18 3 31 34 1 47 11 3 35 44 -0.46 25 0 0 3 9 53 8 23 27.6 39 223 58 2 19 45 4 0 23 2 15 37 4 4 34 -0.46 26 0 0 3 39 6 8 23 30.5 38 223 59 2 48 46 4 29 48 2 44 38 4 34 0 -0.46 27 0 0 4 8 53 8 23 33.3 37 224 60 3 18 22 4 59 47 3 14 13 5 4 0 -0.46 28 0 0 4 39 15 8 23 36.0 35 224 61 3 48 32 5 30 20 3 44 22 5 34 35 -0.46 29 0 0 5 10 10 8 23 38.7 34 224 62 4 19 15 6 1 27 4 15 4 6 5 42 -0.46 30 0 0 5 41 37 8 23 41.3 33 225 62 4 50 31 6 33 6 4 46 19 6 37 23 -0.46 31 0 0 6 13 37 8 23 43.9 32 225 63 5 22 20 7 5 18 5 18 6 7 9 35 -0.46 32 0 0 6 46 8 8 23 46.3 31 225 64 5 54 39 7 38 1 5 50 25 7 42 20 -0.46 33 0 0 7 19 10 8 23 48.8 30 226 65 6 27 30 8 11 15 6 23 15 8 15 34 -0.46 34 0 0 7 52 42 8 23 51.1 29 226 65 7 0 50 8 44 59 6 56 34 8 49 19 -0.46 35 0 0 8 26 43 8 23 53.3 28 226 66 7 34 40 9 19 12 7 30 23 9 23 33 -0.46 36 0 0 9 1 13 8 23 55.5 27 227 67 8 8 58 9 53 53 8 4 40 9 58 16 -0.46 37 0 0 9 36 10 8 23 57.6 26 227 67 8 43 43 10 29 2 8 39 25 10 33 25 -0.46 38 0 0 10 11 34 8 23 59.6 24 227 68 9 18 56 11 4 37 9 14 36 11 9 1 -0.46 39 0 0 10 47 23 8 24 1.6 23 227 68 9 54 34 11 40 38 9 50 13 11 45 3 -0.46 40 0 0 11 23 37 8 24 3.4 22 228 69 10 30 36 12 17 3 10 26 15 12 21 29 -0.46 41 0 0 12 0 14 8 24 5.2 21 228 69 11 7 3 12 53 51 11 2 40 12 58 18 -0.46 42 0 0 12 37 13 8 24 6.9 20 228 69 11 43 52 13 31 2 11 39 28 13 35 30 -0.46 43 0 0 13 14 34 8 24 8.5 19 229 69 12 21 2 14 8 34 12 16 38 14 13 3 -0.46 44 0 0 13 52 15 8 24 10.0 18 229 70 12 58 33 14 46 25 12 54 8 14 50 55 -0.46 45 0 0 14 30 15 8 24 11.4 16 229 70 13 36 22 15 24 35 13 31 57 15 29 6 -0.46 46 0 0 15 8 33 8 24 12.7 15 230 70 14 14 30 16 3 3 14 10 3 16 7 34 -0.46 47 0 0 15 47 6 8 24 13.9 14 230 70 14 52 54 16 41 47 14 48 27 16 46 19 -0.46 48 0 0 16 25 55 8 24 15.0 13 230 69 15 31 34 17 20 45 15 27 6 17 25 18 -0.46 49 0 0 17 4 58 8 24 16.0 12 230 69 16 10 27 17 59 57 16 5 58 18 4 30 -0.46 50 0 0 17 44 12 8 24 17.0 11 231 69 16 49 33 18 39 20 16 45 4 18 43 55 -0.46 51 0 0 18 23 38 8 24 17.8 10 231 68 17 28 51 19 18 54 17 24 21 19 23 29 -0.46 52 0 0 19 3 13 8 24 18.6 8 231 68 18 8 18 19 58 37 18 3 47 20 3 13 -0.46 53 0 0 19 42 56 8 24 19.2 7 232 68 18 47 54 20 38 28 18 43 22 20 43 4 -0.46 54 0 0 20 22 46 8 24 19.7 6 232 67 19 27 36 21 18 25 19 23 4 21 23 2 -0.46 55 0 0 21 2 40 8 24 20.2 5 232 66 20 7 24 21 58 26 20 2 52 22 3 4 -0.46 56 0 0 21 42 38 8 24 20.6 4 233 66 20 47 16 22 38 31 20 42 43 22 43 9 -0.47 57 0 0 22 22 39 8 24 20.8 3 233 65 21 27 11 23 18 37 21 22 37 23 23 16 -0.47 58 0 0 23 2 39 8 24 21.0 2 234 64 22 7 6 23 58 43 22 2 32 24 3 22 -0.49 59 0 0 23 42 40 8 24 21.0 0 234 64 22 47 1 .. .. .. 22 42 27 .. .. .. -0.58 Uncertainty in time = +/- 1 secs Prediction of 2023 Jan 12.3 Data for the target star ------------------------ * name: TYC 7412-00470-1 * constellation : Sagittarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 18 52 07.7949 DE: -32 28 17.188 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 18 52 07.7949 DE: -32 28 17.188 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 11.3 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (54) Alexandra asteroid class: approx. diameter [km]: 152 approx. diameter ["]: 0.088 distance from Earth [AU]: 2.37340 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#192 date of fit: 2022 Nov 25 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", 73.857° remarks: * orbital elements for (54)Alexandra : Mean anomaly = 330.9193670755 deg Arg. of pericenter = 345.2704368710 deg Long. of node = 313.2313024628 deg Inclination = 11.7965100304 deg Eccentricity = 0.1967892610 Semimajor axis = 2.7109188677 AU Perihelion dist = 2.1774391470 AU Mag: H = 7.87, G = 0.15 Epoch of elements : MJD 60017.34798611 TDT (2023 Mar 14.3480) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#1922022Nov25,5.14,2023,3,14,8.351544,-0.026964,0.418565,16.662190,1.090916,-0.005252,-0.000782,-0.000001,0.000000 -13.5671,-32.4436,57.05,-2.59,False TYC 7412-00470-1,18.86883186,-32.4714413,0.00,11.31,0.00,0.0,0,,18.89363483,-32.4435540,1.64,0.00,0,0,0 54,Alexandra,12.68,152.1,2.3734,0,0,4.878,4.05,,7.6,0 0,330.8425,2023,3,14,345.2704,313.2313,11.7965,0.19679,2.71092,2.17744,7.88,5.0,0.15 1.041,0.0167,0.0007,74,0.0036,Known errors,-1.00,-1,-1,-1 20230314_0470-1,59956.27 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jan 12, 06:25 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org