IOTA/IOTA-ES occultation update for (729) Watsonia / UCAC4 432-072743 event on 2023 Jun 05, 09:00 UT Visible from SE USA, Mexico Summary ------- On 2023 Jun 05 UT, the 51.1 km diameter asteroid (729) Watsonia will occult a 12.2 mag star in the constellation Ophiuchus for observers along a path across SE USA, Mexico. In the case of an occultation, the combined light of the asteroid and the star will drop by 1.29 mag to 13.13 mag (the magnitude of the asteroid) for at most 4.910 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: 2023 Jun 05, 08:51 - 2023 Jun 05, 09:10 * geocentric midpoint of event [JD]: 2460100.87562771 * magnitude of target star: 12.23 * magnitude drop [mag]: 1.29 * estimated maximum duration [s]: 4.910 * Moon: 98 % sunlit, 24° distance * Sun: 156° distance * rough path description: SE USA, Mexico The occultation path -------------------- * approximate projected width [km]: 55 * 1 sigma uncertainty interval [path widths]: +/- 0.27 * 1 sigma uncertainty interval [seconds]: +/- 2.3 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.023, +/- 0.007) * 1 sigma uncertainty ellipse (major, minor, PA): (0.023", 0.004", 105°) * approx speed of asteroid's shadow [km/s]: 10.3971 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 432-072743 by 729 Watsonia on 2023 Jun 5 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 149 0 0 6 58 22 9 10 25.3 1 94 -13 7 13 19 6 43 27 7 21 31 6 35 16 .... 150 0 0 6 54 42 9 10 25.1 2 94 -14 7 9 39 6 39 47 7 17 51 6 31 37 -0.26 151 0 0 6 51 19 9 10 24.6 3 94 -15 7 6 15 6 36 24 7 14 27 6 28 14 -0.31 152 0 0 6 48 13 9 10 24.0 4 94 -16 7 3 9 6 33 18 7 11 21 6 25 9 -0.33 153 0 0 6 45 24 9 10 23.2 5 94 -16 7 0 20 6 30 30 7 8 32 6 22 20 -0.35 154 0 0 6 42 52 9 10 22.2 6 94 -17 6 57 48 6 27 58 7 6 0 6 19 49 -0.36 155 0 0 6 40 38 9 10 21.0 7 95 -18 6 55 33 6 25 44 7 3 45 6 17 35 -0.36 156 0 0 6 38 40 9 10 19.6 8 95 -19 6 53 36 6 23 47 7 1 47 6 15 38 -0.37 157 0 0 6 37 0 9 10 18.0 9 95 -20 6 51 55 6 22 7 7 0 6 6 13 58 -0.37 158 0 0 6 35 37 9 10 16.2 10 95 -21 6 50 32 6 20 44 6 58 43 6 12 35 -0.37 159 0 0 6 34 31 9 10 14.2 11 95 -22 6 49 26 6 19 38 6 57 37 6 11 29 -0.37 160 0 0 6 33 42 9 10 12.0 12 95 -23 6 48 37 6 18 49 6 56 48 6 10 40 -0.38 161 0 0 6 33 10 9 10 9.7 13 95 -24 6 48 5 6 18 17 6 56 16 6 10 8 -0.38 162 0 0 6 32 55 9 10 7.1 13 95 -24 6 47 50 6 18 2 6 56 1 6 9 54 -0.38 163 0 0 6 32 57 9 10 4.4 14 96 -25 6 47 52 6 18 5 6 56 2 6 9 56 -0.38 164 0 0 6 33 16 9 10 1.5 15 96 -26 6 48 11 6 18 24 6 56 21 6 10 15 -0.38 165 0 0 6 33 52 9 9 58.4 16 96 -27 6 48 46 6 19 0 6 56 57 6 10 51 -0.38 166 0 0 6 34 45 9 9 55.1 17 96 -28 6 49 39 6 19 52 6 57 50 6 11 44 -0.38 167 0 0 6 35 54 9 9 51.7 18 96 -29 6 50 49 6 21 2 6 58 59 6 12 53 -0.38 168 0 0 6 37 21 9 9 48.0 19 96 -30 6 52 15 6 22 28 7 0 26 6 14 19 -0.38 169 0 0 6 39 4 9 9 44.2 20 97 -30 6 53 58 6 24 11 7 2 9 6 16 2 -0.38 170 0 0 6 41 3 9 9 40.2 21 97 -31 6 55 57 6 26 10 7 4 8 6 18 1 -0.38 171 0 0 6 43 19 9 9 36.1 22 97 -32 6 58 14 6 28 26 7 6 25 6 20 17 -0.38 172 0 0 6 45 52 9 9 31.7 23 97 -33 7 0 46 6 30 58 7 8 57 6 22 50 -0.38 173 0 0 6 48 41 9 9 27.2 24 97 -34 7 3 35 6 33 47 7 11 46 6 25 38 -0.38 174 0 0 6 51 46 9 9 22.6 25 97 -34 7 6 41 6 36 52 7 14 52 6 28 43 -0.38 175 0 0 6 55 7 9 9 17.7 26 98 -35 7 10 2 6 40 14 7 18 14 6 32 4 -0.38 176 0 0 6 58 45 9 9 12.7 27 98 -36 7 13 40 6 43 51 7 21 51 6 35 42 -0.38 177 0 0 7 2 39 9 9 7.6 28 98 -37 7 17 34 6 47 45 7 25 46 6 39 35 -0.38 178 0 0 7 6 48 9 9 2.2 29 98 -37 7 21 44 6 51 54 7 29 56 6 43 44 -0.38 179 0 0 7 11 14 9 8 56.7 30 99 -38 7 26 10 6 56 19 7 34 21 6 48 10 -0.38 -180 0 0 7 15 55 9 8 51.1 31 99 -39 7 30 51 7 1 0 7 39 3 6 52 50 -0.38 -179 0 0 7 20 52 9 8 45.3 32 99 -40 7 35 48 7 5 57 7 44 1 6 57 47 -0.38 -178 0 0 7 26 4 9 8 39.3 33 99 -40 7 41 1 7 11 9 7 49 14 7 2 59 -0.38 -177 0 0 7 31 32 9 8 33.2 34 100 -41 7 46 30 7 16 37 7 54 42 7 8 27 -0.38 -176 0 0 7 37 16 9 8 27.0 35 100 -42 7 52 13 7 22 20 8 0 26 7 14 9 -0.38 -175 0 0 7 43 14 9 8 20.6 36 100 -42 7 58 12 7 28 18 8 6 25 7 20 7 -0.38 -174 0 0 7 49 28 9 8 14.0 36 101 -43 8 4 26 7 34 31 8 12 39 7 26 20 -0.38 -173 0 0 7 55 57 9 8 7.3 37 101 -44 8 10 55 7 41 0 8 19 8 7 32 48 -0.38 -172 0 0 8 2 40 9 8 0.5 38 101 -44 8 17 39 7 47 43 8 25 52 7 39 31 -0.38 -171 0 0 8 9 38 9 7 53.5 39 102 -45 8 24 37 7 54 40 8 32 51 7 46 29 -0.38 -170 0 0 8 16 51 9 7 46.4 40 102 -46 8 31 51 8 1 53 8 40 4 7 53 41 -0.38 -169 0 0 8 24 18 9 7 39.2 41 102 -46 8 39 18 8 9 19 8 47 32 8 1 7 -0.38 -168 0 0 8 32 0 9 7 31.8 42 103 -47 8 47 0 8 17 0 8 55 14 8 8 48 -0.39 -167 0 0 8 39 55 9 7 24.3 43 103 -47 8 54 56 8 24 56 9 3 11 8 16 43 -0.39 -166 0 0 8 48 5 9 7 16.7 44 104 -48 9 3 6 8 33 5 9 11 21 8 24 52 -0.39 -165 0 0 8 56 28 9 7 9.0 45 104 -48 9 11 30 8 41 28 9 19 45 8 33 15 -0.39 -164 0 0 9 5 5 9 7 1.1 46 105 -49 9 20 8 8 50 4 9 28 23 8 41 51 -0.39 -163 0 0 9 13 56 9 6 53.1 46 105 -49 9 28 59 8 58 55 9 37 15 8 50 41 -0.39 -162 0 0 9 23 0 9 6 45.0 47 106 -50 9 38 4 9 7 58 9 46 20 8 59 45 -0.39 -161 0 0 9 32 17 9 6 36.8 48 107 -50 9 47 22 9 17 15 9 55 38 9 9 1 -0.39 -160 0 0 9 41 48 9 6 28.5 49 107 -51 9 56 52 9 26 45 10 5 9 9 18 30 -0.39 -159 0 0 9 51 31 9 6 20.1 50 108 -51 10 6 36 9 36 27 10 14 53 9 28 13 -0.39 -158 0 0 10 1 27 9 6 11.5 51 109 -51 10 16 32 9 46 23 10 24 49 9 38 8 -0.39 -157 0 0 10 11 35 9 6 2.9 52 109 -52 10 26 41 9 56 30 10 34 59 9 48 15 -0.39 -156 0 0 10 21 56 9 5 54.2 52 110 -52 10 37 2 10 6 50 10 45 20 9 58 35 -0.39 -155 0 0 10 32 28 9 5 45.3 53 111 -52 10 47 36 10 17 23 10 55 54 10 9 7 -0.39 -154 0 0 10 43 13 9 5 36.4 54 112 -53 10 58 21 10 28 7 11 6 39 10 19 51 -0.39 -153 0 0 10 54 9 9 5 27.4 55 113 -53 11 9 18 10 39 2 11 17 36 10 30 46 -0.39 -152 0 0 11 5 17 9 5 18.3 56 114 -53 11 20 26 10 50 10 11 28 45 10 41 53 -0.39 -151 0 0 11 16 36 9 5 9.1 56 115 -53 11 31 46 11 1 28 11 40 5 10 53 11 -0.39 -150 0 0 11 28 6 9 4 59.9 57 116 -54 11 43 17 11 12 58 11 51 36 11 4 41 -0.39 -149 0 0 11 39 48 9 4 50.6 58 117 -54 11 54 58 11 24 39 12 3 18 11 16 21 -0.39 -148 0 0 11 51 39 9 4 41.2 59 118 -54 12 6 51 11 36 30 12 15 11 11 28 12 -0.39 -147 0 0 12 3 42 9 4 31.7 59 119 -54 12 18 54 11 48 31 12 27 14 11 40 13 -0.39 -146 0 0 12 15 54 9 4 22.1 60 121 -54 12 31 7 12 0 43 12 39 27 11 52 25 -0.39 -145 0 0 12 28 17 9 4 12.5 61 122 -54 12 43 30 12 13 5 12 51 51 12 4 46 -0.39 -144 0 0 12 40 49 9 4 2.9 61 124 -54 12 56 3 12 25 37 13 4 24 12 17 18 -0.39 -143 0 0 12 53 31 9 3 53.1 62 125 -54 13 8 45 12 38 18 13 17 7 12 29 59 -0.39 -142 0 0 13 6 22 9 3 43.4 63 127 -54 13 21 37 12 51 9 13 29 59 12 42 49 -0.39 -141 0 0 13 19 22 9 3 33.5 63 128 -54 13 34 37 13 4 9 13 43 0 12 55 48 -0.39 -140 0 0 13 32 31 9 3 23.7 64 130 -54 13 47 47 13 17 17 13 56 10 13 8 57 -0.39 -139 0 0 13 45 49 9 3 13.7 65 132 -54 14 1 5 13 30 34 14 9 28 13 22 13 -0.39 -138 0 0 13 59 15 9 3 3.8 65 134 -54 14 14 32 13 43 59 14 22 55 13 35 38 -0.39 -137 0 0 14 12 49 9 2 53.8 66 136 -53 14 28 6 13 57 33 14 36 30 13 49 12 -0.39 -136 0 0 14 26 31 9 2 43.8 66 138 -53 14 41 49 14 11 14 14 50 13 14 2 53 -0.39 -135 0 0 14 40 20 9 2 33.7 66 140 -53 14 55 39 14 25 3 15 4 3 14 16 41 -0.39 -134 0 0 14 54 17 9 2 23.6 67 142 -53 15 9 36 14 38 59 15 18 0 14 30 37 -0.39 -133 0 0 15 8 21 9 2 13.5 67 145 -52 15 23 40 14 53 3 15 32 5 14 44 40 -0.39 -132 0 0 15 22 31 9 2 3.4 68 147 -52 15 37 51 15 7 13 15 46 16 14 58 50 -0.39 -131 0 0 15 36 48 9 1 53.3 68 150 -52 15 52 9 15 21 29 16 0 34 15 13 6 -0.39 -130 0 0 15 51 11 9 1 43.1 68 152 -51 16 6 32 15 35 52 16 14 58 15 27 29 -0.39 -129 0 0 16 5 41 9 1 33.0 68 155 -51 16 21 2 15 50 21 16 29 28 15 41 57 -0.39 -128 0 0 16 20 16 9 1 22.8 68 157 -50 16 35 38 16 4 55 16 44 4 15 56 31 -0.39 -127 0 0 16 34 56 9 1 12.6 68 160 -50 16 50 18 16 19 35 16 58 45 16 11 11 -0.39 -126 0 0 16 49 41 9 1 2.5 69 163 -50 17 5 4 16 34 20 17 13 31 16 25 56 -0.39 -125 0 0 17 4 32 9 0 52.3 69 165 -49 17 19 55 16 49 10 17 28 22 16 40 45 -0.39 -124 0 0 17 19 27 9 0 42.2 69 168 -49 17 34 50 17 4 4 17 43 17 16 55 40 -0.39 -123 0 0 17 34 26 9 0 32.0 68 171 -48 17 49 50 17 19 3 17 58 17 17 10 38 -0.39 -122 0 0 17 49 29 9 0 21.9 68 174 -48 18 4 53 17 34 6 18 13 21 17 25 41 -0.39 -121 0 0 18 4 36 9 0 11.8 68 176 -47 18 20 1 17 49 13 18 28 28 17 40 47 -0.39 -120 0 0 18 19 46 9 0 1.7 68 179 -47 18 35 11 18 4 22 18 43 39 17 55 57 -0.39 -119 0 0 18 34 59 8 59 51.7 68 181 -46 18 50 25 18 19 35 18 58 53 18 11 10 -0.39 -118 0 0 18 50 16 8 59 41.7 67 184 -45 19 5 42 18 34 51 19 14 10 18 26 25 -0.39 -117 0 0 19 5 34 8 59 31.7 67 186 -45 19 21 1 18 50 10 19 29 29 18 41 44 -0.39 -116 0 0 19 20 55 8 59 21.7 67 189 -44 19 36 22 19 5 31 19 44 51 18 57 4 -0.40 -115 0 0 19 36 18 8 59 11.8 66 191 -44 19 51 45 19 20 53 20 0 14 19 12 27 -0.40 -114 0 0 19 51 43 8 59 2.0 66 193 -43 20 7 10 19 36 18 20 15 39 19 27 51 -0.40 -113 0 0 20 7 9 8 58 52.1 65 195 -42 20 22 37 19 51 44 20 31 6 19 43 17 -0.40 -112 0 0 20 22 36 8 58 42.4 65 197 -42 20 38 4 20 7 10 20 46 33 19 58 44 -0.40 -111 0 0 20 38 4 8 58 32.7 64 199 -41 20 53 32 20 22 38 21 2 1 20 14 11 -0.40 -110 0 0 20 53 33 8 58 23.0 64 201 -40 21 9 0 20 38 6 21 17 30 20 29 39 -0.40 -109 0 0 21 9 1 8 58 13.4 63 203 -40 21 24 29 20 53 35 21 32 59 20 45 8 -0.40 -108 0 0 21 24 30 8 58 3.9 63 205 -39 21 39 58 21 9 3 21 48 27 21 0 36 -0.40 -107 0 0 21 39 58 8 57 54.4 62 206 -38 21 55 26 21 24 31 22 3 56 21 16 4 -0.40 -106 0 0 21 55 25 8 57 45.0 61 208 -38 22 10 54 21 39 58 22 19 23 21 31 31 -0.40 -105 0 0 22 10 52 8 57 35.6 61 209 -37 22 26 20 21 55 25 22 34 50 21 46 57 -0.40 -104 0 0 22 26 17 8 57 26.4 60 211 -36 22 41 45 22 10 50 22 50 15 22 2 22 -0.40 -103 0 0 22 41 40 8 57 17.2 59 212 -35 22 57 9 22 26 13 23 5 39 22 17 46 -0.40 -102 0 0 22 57 2 8 57 8.1 59 214 -35 23 12 31 22 41 35 23 21 1 22 33 8 -0.40 -101 0 0 23 12 22 8 56 59.1 58 215 -34 23 27 51 22 56 55 23 36 20 22 48 27 -0.40 -100 0 0 23 27 39 8 56 50.1 57 216 -33 23 43 8 23 12 12 23 51 38 23 3 45 -0.40 - 99 0 0 23 42 54 8 56 41.3 57 218 -32 23 58 22 23 27 27 24 6 52 23 19 0 -0.40 - 98 0 0 23 58 6 8 56 32.5 56 219 -32 24 13 34 23 42 39 24 22 4 23 34 11 -0.40 - 97 0 0 24 13 14 8 56 23.9 55 220 -31 24 28 42 23 57 47 24 37 12 23 49 20 -0.40 - 96 0 0 24 28 19 8 56 15.3 54 221 -30 24 43 47 24 12 52 24 52 17 24 4 25 -0.40 - 95 0 0 24 43 20 8 56 6.8 54 222 -29 24 58 48 24 27 54 25 7 18 24 19 27 -0.40 - 94 0 0 24 58 17 8 55 58.4 53 223 -29 25 13 45 24 42 51 25 22 15 24 34 24 -0.40 - 93 0 0 25 13 10 8 55 50.1 52 224 -28 25 28 38 24 57 44 25 37 7 24 49 17 -0.40 - 92 0 0 25 27 58 8 55 42.0 51 225 -27 25 43 26 25 12 32 25 51 55 25 4 5 -0.40 - 91 0 0 25 42 41 8 55 33.9 50 226 -26 25 58 9 25 27 16 26 6 38 25 18 49 -0.40 - 90 0 0 25 57 20 8 55 25.9 50 227 -25 26 12 47 25 41 54 26 21 16 25 33 27 -0.40 - 89 0 0 26 11 53 8 55 18.1 49 228 -25 26 27 20 25 56 27 26 35 49 25 48 1 -0.40 - 88 0 0 26 26 20 8 55 10.4 48 229 -24 26 41 47 26 10 55 26 50 15 26 2 28 -0.40 - 87 0 0 26 40 41 8 55 2.7 47 230 -23 26 56 8 26 25 16 27 4 36 26 16 50 -0.40 - 86 0 0 26 54 57 8 54 55.2 46 231 -22 27 10 23 26 39 32 27 18 51 26 31 6 -0.40 - 85 0 0 27 9 5 8 54 47.8 46 231 -21 27 24 31 26 53 41 27 33 0 26 45 15 -0.40 - 84 0 0 27 23 8 8 54 40.5 45 232 -21 27 38 33 27 7 44 27 47 1 26 59 18 -0.40 - 83 0 0 27 37 3 8 54 33.4 44 233 -20 27 52 28 27 21 40 28 0 56 27 13 14 -0.40 - 82 0 0 27 50 52 8 54 26.3 43 234 -19 28 6 17 27 35 29 28 14 44 27 27 3 -0.40 - 81 0 0 28 4 33 8 54 19.4 42 234 -18 28 19 57 27 49 10 28 28 25 27 40 45 -0.40 - 80 0 0 28 18 7 8 54 12.6 41 235 -17 28 33 31 28 2 45 28 41 58 27 54 20 -0.40 - 79 0 0 28 31 33 8 54 6.0 41 236 -17 28 46 56 28 16 11 28 55 23 28 7 46 -0.40 - 78 0 0 28 44 51 8 53 59.4 40 237 -16 29 0 14 28 29 30 29 8 41 28 21 5 -0.40 - 77 0 0 28 58 1 8 53 53.0 39 237 -15 29 13 24 28 42 40 29 21 50 28 34 16 -0.40 - 76 0 0 29 11 3 8 53 46.7 38 238 -14 29 26 25 28 55 42 29 34 51 28 47 18 -0.40 - 75 0 0 29 23 56 8 53 40.6 37 239 -13 29 39 17 29 8 36 29 47 43 29 0 12 -0.40 - 74 0 0 29 36 40 8 53 34.5 36 239 -12 29 52 1 29 21 21 30 0 27 29 12 57 -0.40 - 73 0 0 29 49 16 8 53 28.6 36 240 -12 30 4 36 29 33 56 30 13 2 29 25 33 -0.40 - 72 0 0 30 1 42 8 53 22.9 35 241 -11 30 17 2 29 46 23 30 25 27 29 38 1 -0.40 - 71 0 0 30 13 59 8 53 17.2 34 241 -10 30 29 18 29 58 41 30 37 43 29 50 18 -0.40 - 70 0 0 30 26 6 8 53 11.8 33 242 -9 30 41 25 30 10 49 30 49 50 30 2 27 -0.40 - 69 0 0 30 38 4 8 53 6.4 32 243 -8 30 53 23 30 22 47 31 1 47 30 14 25 -0.40 - 68 0 0 30 49 52 8 53 1.2 31 243 -8 31 5 10 30 34 36 31 13 34 30 26 14 -0.40 - 67 0 0 31 1 30 8 52 56.1 31 244 -7 31 16 47 30 46 14 31 25 11 30 37 53 -0.40 - 66 0 0 31 12 58 8 52 51.1 30 244 -6 31 28 15 30 57 43 31 36 38 30 49 22 -0.40 - 65 0 0 31 24 15 8 52 46.3 29 245 -5 31 39 31 31 9 1 31 47 54 31 0 40 -0.40 - 64 0 0 31 35 22 8 52 41.6 28 246 -4 31 50 38 31 20 8 31 59 0 31 11 48 -0.40 - 63 0 0 31 46 19 8 52 37.0 27 246 -4 32 1 34 31 31 5 32 9 56 31 22 45 -0.40 - 62 0 0 31 57 4 8 52 32.6 26 247 -3 32 12 19 31 41 51 32 20 40 31 33 32 -0.40 - 61 0 0 32 7 39 8 52 28.3 25 247 -2 32 22 53 31 52 27 32 31 14 31 44 7 -0.40 - 60 0 0 32 18 3 8 52 24.2 25 248 -1 32 33 16 32 2 51 32 41 37 31 54 32 -0.40 - 59 0 0 32 28 15 8 52 20.2 24 249 0 32 43 28 32 13 4 32 51 48 32 4 46 -0.40 - 58 0 0 32 38 16 8 52 16.3 23 249 1 32 53 28 32 23 6 33 1 49 32 14 48 -0.40 - 57 0 0 32 48 6 8 52 12.6 22 250 1 33 3 17 32 32 56 33 11 37 32 24 38 -0.40 - 56 0 0 32 57 44 8 52 9.0 21 250 2 33 12 55 32 42 35 33 21 14 32 34 17 -0.40 - 55 0 0 33 7 10 8 52 5.6 20 251 3 33 22 20 32 52 2 33 30 40 32 43 45 -0.40 - 54 0 0 33 16 25 8 52 2.2 20 252 4 33 31 34 33 1 17 33 39 53 32 53 0 -0.40 - 53 0 0 33 25 28 8 51 59.1 19 252 5 33 40 36 33 10 21 33 48 55 33 2 4 -0.40 - 52 0 0 33 34 18 8 51 56.0 18 253 5 33 49 26 33 19 12 33 57 45 33 10 56 -0.40 - 51 0 0 33 42 57 8 51 53.1 17 253 6 33 58 4 33 27 51 34 6 22 33 19 35 -0.40 - 50 0 0 33 51 23 8 51 50.4 16 254 7 34 6 30 33 36 18 34 14 48 33 28 2 -0.40 - 49 0 0 33 59 37 8 51 47.7 16 254 8 34 14 43 33 44 33 34 23 1 33 36 17 -0.41 - 48 0 0 34 7 39 8 51 45.2 15 255 9 34 22 44 33 52 35 34 31 1 33 44 20 -0.41 - 47 0 0 34 15 28 8 51 42.9 14 256 10 34 30 33 34 0 24 34 38 50 33 52 10 -0.41 - 46 0 0 34 23 4 8 51 40.7 13 256 10 34 38 9 34 8 1 34 46 25 33 59 47 -0.41 - 45 0 0 34 30 28 8 51 38.6 12 257 11 34 45 32 34 15 26 34 53 48 34 7 12 -0.41 - 44 0 0 34 37 39 8 51 36.7 11 257 12 34 52 42 34 22 37 35 0 58 34 14 24 -0.41 - 43 0 0 34 44 37 8 51 34.9 11 258 13 34 59 40 34 29 36 35 7 55 34 21 23 -0.41 - 42 0 0 34 51 23 8 51 33.2 10 258 14 35 6 25 34 36 22 35 14 40 34 28 9 -0.41 - 41 0 0 34 57 55 8 51 31.7 9 259 14 35 12 56 34 42 55 35 21 11 34 34 42 -0.41 - 40 0 0 35 4 14 8 51 30.3 8 260 15 35 19 15 34 49 15 35 27 30 34 41 2 -0.41 - 39 0 0 35 10 20 8 51 29.0 7 260 16 35 25 21 34 55 21 35 33 35 34 47 9 -0.41 - 38 0 0 35 16 13 8 51 27.9 6 261 17 35 31 13 35 1 15 35 39 27 34 53 3 -0.42 - 37 0 0 35 21 53 8 51 26.9 6 261 18 35 36 52 35 6 55 35 45 6 34 58 43 -0.42 - 36 0 0 35 27 19 8 51 26.0 5 262 18 35 42 18 35 12 21 35 50 31 35 4 10 -0.42 - 35 0 0 35 32 32 8 51 25.3 4 262 19 35 47 30 35 17 35 35 55 43 35 9 24 -0.43 - 34 0 0 35 37 31 8 51 24.7 3 263 20 35 52 29 35 22 35 36 0 42 35 14 24 -0.44 - 33 0 0 35 42 17 8 51 24.3 2 264 21 35 57 15 35 27 21 36 5 27 35 19 11 -0.45 - 32 0 0 35 46 50 8 51 23.9 2 264 22 36 1 47 35 31 54 36 9 59 35 23 44 -0.48 - 31 0 0 35 51 9 8 51 23.8 1 265 22 36 6 5 35 36 13 36 14 17 35 28 3 -0.57 Uncertainty in time = +/- 3 secs Prediction of 2023 Apr 29.2 Data for the target star ------------------------ * name: UCAC4 432-072743 * constellation : Ophiuchus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 17 54 50.2194 DE: -03 47 04.724 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 17 54 50.2194 DE: -03 47 04.724 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 12.2 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (729) Watsonia asteroid class: Barbarian approx. diameter [km]: 51 approx. diameter ["]: 0.044 distance from Earth [AU]: 1.61400 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#61 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): 0.023", 0.004", 104.956° remarks: * orbital elements for (729)Watsonia : Mean anomaly = 41.6483449756 deg Arg. of pericenter = 87.3774787836 deg Long. of node = 124.3161538838 deg Inclination = 18.0486171150 deg Eccentricity = 0.0966998751 Semimajor axis = 2.7597151867 AU Perihelion dist = 2.4928510729 AU Mag: H = 9.41, G = 0.15 Epoch of elements : MJD 60100.37548611 TDT (2023 Jun 05.3755) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#612023Apr24,4.91,2023,6,5,9.015065,-0.090831,0.353263,-5.683862,-1.460054,-0.001388,-0.001764,0.000001,0.000000 -119.7395,-3.7897,44.39,22.53,False UCAC4 432-072743,17.91394982,-3.7846457,0.00,12.23,0.00,0.0,0,,17.93472792,-3.7897267,1.29,0.00,0,0,0 729,Watsonia,13.13,51.1,1.6140,0,0,-2.069,-7.96,,2.6,0 0,41.5676,2023,6,5,87.3775,124.3162,18.0486,0.09670,2.75972,2.49285,9.42,5.0,0.15 1.274,0.0233,0.0040,105,0.0120,Known errors,-1.00,-1,-1,-1 20230605_072743,60063.19 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Apr 29, 04:34 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org