IOTA/IOTA-ES occultation update for (623) Chimaera / UCAC4 424-053059 event on 2023 May 08, 05:40 UT Visible from Canada Summary ------- On 2023 May 08 UT, the 43.8 km diameter asteroid (623) Chimaera will occult a 12.1 mag star in the constellation Sextans for observers along a path across Canada. In the case of an occultation, the combined light of the asteroid and the star will drop by 3.32 mag to 15.37 mag (the magnitude of the asteroid) for at most 6.800 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 May 08, 05:31 - 2023 May 08, 05:50 * geocentric midpoint of event [JD]: 2460072.73669667 * magnitude of target star: 12.10 * magnitude drop [mag]: 3.32 * estimated maximum duration [s]: 6.800 * Moon: 93 % sunlit, 98° distance * Sun: 111° distance * rough path description: Canada The occultation path -------------------- * approximate projected width [km]: 80 * 1 sigma uncertainty interval [path widths]: +/- 0.22 * 1 sigma uncertainty interval [seconds]: +/- 2.0 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.009, +/- 0.007) * 1 sigma uncertainty ellipse (major, minor, PA): (0.011", 0.003", 125°) * approx speed of asteroid's shadow [km/s]: 6.4416 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 424-053059 by 623 Chimaera on 2023 May 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 125 0 0 55 45 16 5 31 50.1 0 100 46 55 23 29 56 7 16 55 13 56 .. .. .. .... 126 0 0 55 39 25 5 31 50.2 1 101 45 55 17 38 56 1 25 55 8 5 56 11 12 -0.69 127 0 0 55 33 35 5 31 50.5 1 101 45 55 11 49 55 55 34 55 2 15 56 5 22 -1.08 128 0 0 55 27 46 5 31 50.9 2 102 45 55 6 0 55 49 45 54 56 27 55 59 33 -1.22 129 0 0 55 21 59 5 31 51.6 2 103 44 55 0 13 55 43 58 54 50 39 55 53 45 -1.30 130 0 0 55 16 12 5 31 52.4 3 104 44 54 54 26 55 38 11 54 44 53 55 47 58 -1.34 131 0 0 55 10 27 5 31 53.5 4 105 44 54 48 42 55 32 26 54 39 9 55 42 13 -1.37 132 0 0 55 4 44 5 31 54.7 4 106 43 54 42 59 55 26 42 54 33 26 55 36 29 -1.39 133 0 0 54 59 2 5 31 56.1 5 106 43 54 37 17 55 21 1 54 27 44 55 30 48 -1.41 134 0 0 54 53 23 5 31 57.7 5 107 42 54 31 38 55 15 21 54 22 5 55 25 8 -1.42 135 0 0 54 47 45 5 31 59.5 6 108 42 54 26 0 55 9 43 54 16 27 55 19 30 -1.43 136 0 0 54 42 9 5 32 1.5 6 109 42 54 20 25 55 4 7 54 10 52 55 13 54 -1.44 137 0 0 54 36 36 5 32 3.7 7 110 41 54 14 52 54 58 34 54 5 19 55 8 20 -1.45 138 0 0 54 31 5 5 32 6.1 8 111 41 54 9 21 54 53 2 53 59 48 55 2 49 -1.45 139 0 0 54 25 36 5 32 8.7 8 111 40 54 3 52 54 47 33 53 54 20 54 57 20 -1.46 140 0 0 54 20 10 5 32 11.4 9 112 40 53 58 27 54 42 7 53 48 54 54 51 54 -1.46 141 0 0 54 14 47 5 32 14.4 9 113 39 53 53 4 54 36 44 53 43 32 54 46 30 -1.47 142 0 0 54 9 27 5 32 17.6 10 114 39 53 47 44 54 31 23 53 38 12 54 41 9 -1.47 143 0 0 54 4 10 5 32 21.0 11 115 38 53 42 27 54 26 6 53 32 55 54 35 52 -1.47 144 0 0 53 58 56 5 32 24.5 11 116 38 53 37 13 54 20 51 53 27 41 54 30 37 -1.48 145 0 0 53 53 45 5 32 28.3 12 117 37 53 32 2 54 15 40 53 22 30 54 25 26 -1.48 146 0 0 53 48 37 5 32 32.3 12 117 37 53 26 55 54 10 33 53 17 23 54 20 18 -1.48 147 0 0 53 43 33 5 32 36.5 13 118 36 53 21 51 54 5 28 53 12 19 54 15 14 -1.48 148 0 0 53 38 33 5 32 40.8 13 119 36 53 16 51 54 0 28 53 7 19 54 10 13 -1.49 149 0 0 53 33 37 5 32 45.4 14 120 35 53 11 55 53 55 31 53 2 23 54 5 17 -1.49 150 0 0 53 28 44 5 32 50.2 15 121 35 53 7 2 53 50 38 52 57 31 54 0 24 -1.49 151 0 0 53 23 55 5 32 55.1 15 122 34 53 2 14 53 45 50 52 52 43 53 55 35 -1.49 152 0 0 53 19 11 5 33 0.3 16 123 34 52 57 30 53 41 5 52 47 59 53 50 50 -1.49 153 0 0 53 14 31 5 33 5.6 16 124 33 52 52 50 53 36 25 52 43 19 53 46 10 -1.49 154 0 0 53 9 55 5 33 11.2 17 124 32 52 48 15 53 31 49 52 38 44 53 41 34 -1.50 155 0 0 53 5 24 5 33 16.9 17 125 32 52 43 44 53 27 18 52 34 13 53 37 2 -1.50 156 0 0 53 0 58 5 33 22.9 18 126 31 52 39 18 53 22 51 52 29 47 53 32 36 -1.50 157 0 0 52 56 36 5 33 29.0 18 127 31 52 34 56 53 18 29 52 25 25 53 28 13 -1.50 158 0 0 52 52 20 5 33 35.3 19 128 30 52 30 40 53 14 12 52 21 9 53 23 56 -1.50 159 0 0 52 48 8 5 33 41.8 19 129 30 52 26 29 53 10 0 52 16 58 53 19 45 -1.50 160 0 0 52 44 2 5 33 48.5 20 130 29 52 22 23 53 5 54 52 12 53 53 15 38 -1.50 161 0 0 52 40 1 5 33 55.3 20 131 28 52 18 22 53 1 53 52 8 52 53 11 37 -1.51 162 0 0 52 36 6 5 34 2.4 21 132 28 52 14 27 52 57 58 52 4 56 53 7 42 -1.51 163 0 0 52 32 15 5 34 9.6 21 133 27 52 10 36 52 54 7 52 1 6 53 3 51 -1.51 164 0 0 52 28 30 5 34 17.0 22 134 26 52 6 52 52 50 22 51 57 22 53 0 6 -1.51 165 0 0 52 24 51 5 34 24.6 22 135 26 52 3 13 52 46 43 51 53 43 52 56 26 -1.51 166 0 0 52 21 18 5 34 32.4 23 136 25 51 59 40 52 43 9 51 50 10 52 52 53 -1.51 167 0 0 52 17 51 5 34 40.3 23 137 25 51 56 13 52 39 42 51 46 43 52 49 26 -1.51 168 0 0 52 14 30 5 34 48.4 24 138 24 51 52 52 52 36 21 51 43 22 52 46 4 -1.51 169 0 0 52 11 15 5 34 56.7 24 139 23 51 49 37 52 33 6 51 40 8 52 42 49 -1.51 170 0 0 52 8 6 5 35 5.1 25 140 23 51 46 29 52 29 57 51 36 59 52 39 40 -1.51 171 0 0 52 5 4 5 35 13.6 25 141 22 51 43 27 52 26 54 51 33 57 52 36 37 -1.52 172 0 0 52 2 8 5 35 22.4 26 142 21 51 40 31 52 23 58 51 31 1 52 33 41 -1.52 173 0 0 51 59 18 5 35 31.3 26 143 21 51 37 41 52 21 8 51 28 12 52 30 51 -1.52 174 0 0 51 56 35 5 35 40.3 27 144 20 51 34 59 52 18 25 51 25 29 52 28 8 -1.52 175 0 0 51 53 59 5 35 49.4 27 145 20 51 32 22 52 15 48 51 22 53 52 25 31 -1.52 176 0 0 51 51 30 5 35 58.8 27 146 19 51 29 53 52 13 19 51 20 24 52 23 2 -1.52 177 0 0 51 49 7 5 36 8.2 28 147 18 51 27 31 52 10 56 51 18 2 52 20 39 -1.52 178 0 0 51 46 51 5 36 17.8 28 148 18 51 25 15 52 8 40 51 15 46 52 18 23 -1.52 179 0 0 51 44 42 5 36 27.5 28 149 17 51 23 6 52 6 31 51 13 37 52 16 14 -1.52 -180 0 0 51 42 41 5 36 37.3 29 151 16 51 21 5 52 4 30 51 11 36 52 14 12 -1.52 -179 0 0 51 40 46 5 36 47.3 29 152 16 51 19 10 52 2 35 51 9 41 52 12 18 -1.52 -178 0 0 51 38 59 5 36 57.3 30 153 15 51 17 23 52 0 47 51 7 54 52 10 30 -1.52 -177 0 0 51 37 19 5 37 7.5 30 154 14 51 15 43 51 59 7 51 6 14 52 8 50 -1.52 -176 0 0 51 35 46 5 37 17.8 30 155 14 51 14 10 51 57 34 51 4 41 52 7 17 -1.53 -175 0 0 51 34 20 5 37 28.1 30 156 13 51 12 45 51 56 8 51 3 16 52 5 51 -1.53 -174 0 0 51 33 2 5 37 38.6 31 157 12 51 11 27 51 54 50 51 1 58 52 4 33 -1.53 -173 0 0 51 31 52 5 37 49.2 31 159 12 51 10 16 51 53 40 51 0 47 52 3 22 -1.53 -172 0 0 51 30 48 5 37 59.8 31 160 11 51 9 13 51 52 36 50 59 44 52 2 19 -1.53 -171 0 0 51 29 53 5 38 10.5 31 161 11 51 8 17 51 51 41 50 58 48 52 1 23 -1.53 -170 0 0 51 29 4 5 38 21.3 32 162 10 51 7 29 51 50 53 50 58 0 52 0 35 -1.53 -169 0 0 51 28 24 5 38 32.2 32 163 9 51 6 48 51 50 12 50 57 19 51 59 55 -1.53 -168 0 0 51 27 51 5 38 43.1 32 165 9 51 6 15 51 49 39 50 56 46 51 59 22 -1.53 -167 0 0 51 27 25 5 38 54.1 32 166 8 51 5 50 51 49 14 50 56 21 51 58 56 -1.53 -166 0 0 51 27 8 5 39 5.2 32 167 7 51 5 32 51 48 56 50 56 3 51 58 38 -1.53 -165 0 0 51 26 57 5 39 16.3 33 168 7 51 5 22 51 48 46 50 55 53 51 58 28 -1.53 -164 0 0 51 26 55 5 39 27.4 33 169 6 51 5 19 51 48 43 50 55 50 51 58 26 -1.53 -163 0 0 51 27 0 5 39 38.6 33 171 6 51 5 25 51 48 49 50 55 56 51 58 31 -1.53 -162 0 0 51 27 13 5 39 49.8 33 172 5 51 5 37 51 49 2 50 56 9 51 58 44 -1.53 -161 0 0 51 27 34 5 40 1.1 33 173 4 51 5 58 51 49 22 50 56 29 51 59 5 -1.53 -160 0 0 51 28 2 5 40 12.3 33 174 4 51 6 26 51 49 50 50 56 57 51 59 33 -1.53 -159 0 0 51 28 38 5 40 23.6 33 176 3 51 7 2 51 50 26 50 57 33 52 0 9 -1.53 -158 0 0 51 29 22 5 40 34.9 33 177 2 51 7 46 51 51 10 50 58 17 52 0 53 -1.53 -157 0 0 51 30 13 5 40 46.2 33 178 2 51 8 37 51 52 1 50 59 8 52 1 44 -1.53 -156 0 0 51 31 11 5 40 57.5 33 179 1 51 9 35 51 53 0 51 0 6 52 2 43 -1.53 -155 0 0 51 32 18 5 41 8.8 33 181 1 51 10 42 51 54 7 51 1 13 52 3 49 -1.54 -154 0 0 51 33 32 5 41 20.0 33 182 0 51 11 55 51 55 20 51 2 26 52 5 3 -1.54 -153 0 0 51 34 53 5 41 31.3 33 183 0 51 13 17 51 56 42 51 3 47 52 6 25 -1.54 -152 0 0 51 36 22 5 41 42.5 33 184 -1 51 14 45 51 58 11 51 5 16 52 7 54 -1.54 -151 0 0 51 37 58 5 41 53.7 33 186 -1 51 16 21 51 59 47 51 6 52 52 9 30 -1.54 -150 0 0 51 39 41 5 42 4.9 33 187 -2 51 18 5 52 1 31 51 8 35 52 11 14 -1.54 -149 0 0 51 41 32 5 42 16.0 33 188 -3 51 19 55 52 3 22 51 10 26 52 13 5 -1.54 -148 0 0 51 43 30 5 42 27.1 32 189 -3 51 21 53 52 5 20 51 12 24 52 15 3 -1.54 -147 0 0 51 45 36 5 42 38.1 32 191 -4 51 23 59 52 7 26 51 14 29 52 17 9 -1.54 -146 0 0 51 47 48 5 42 49.1 32 192 -4 51 26 11 52 9 38 51 16 41 52 19 21 -1.54 -145 0 0 51 50 8 5 43 0.0 32 193 -5 51 28 30 52 11 58 51 19 1 52 21 41 -1.54 -144 0 0 51 52 34 5 43 10.8 32 194 -5 51 30 57 52 14 25 51 21 27 52 24 8 -1.54 -143 0 0 51 55 8 5 43 21.6 32 195 -6 51 33 30 52 16 58 51 24 0 52 26 42 -1.54 -142 0 0 51 57 48 5 43 32.3 31 197 -6 51 36 10 52 19 39 51 26 40 52 29 22 -1.54 -141 0 0 52 0 35 5 43 42.9 31 198 -7 51 38 57 52 22 26 51 29 27 52 32 9 -1.54 -140 0 0 52 3 29 5 43 53.4 31 199 -7 51 41 50 52 25 20 51 32 21 52 35 4 -1.54 -139 0 0 52 6 29 5 44 3.9 31 200 -8 51 44 51 52 28 20 51 35 21 52 38 4 -1.54 -138 0 0 52 9 36 5 44 14.2 30 201 -8 51 47 57 52 31 28 51 38 27 52 41 11 -1.54 -137 0 0 52 12 49 5 44 24.5 30 202 -8 51 51 10 52 34 41 51 41 40 52 44 25 -1.54 -136 0 0 52 16 9 5 44 34.6 30 204 -9 51 54 30 52 38 1 51 45 0 52 47 45 -1.54 -135 0 0 52 19 35 5 44 44.6 29 205 -9 51 57 55 52 41 27 51 48 25 52 51 11 -1.54 -134 0 0 52 23 7 5 44 54.5 29 206 -10 52 1 27 52 44 59 51 51 57 52 54 43 -1.54 -133 0 0 52 26 45 5 45 4.3 29 207 -10 52 5 5 52 48 37 51 55 34 52 58 22 -1.54 -132 0 0 52 30 29 5 45 14.0 28 208 -11 52 8 49 52 52 21 51 59 18 53 2 6 -1.54 -131 0 0 52 34 18 5 45 23.6 28 209 -11 52 12 38 52 56 11 52 3 7 53 5 56 -1.54 -130 0 0 52 38 14 5 45 33.0 28 210 -11 52 16 33 53 0 7 52 7 2 53 9 51 -1.54 -129 0 0 52 42 14 5 45 42.3 27 211 -12 52 20 34 53 4 8 52 11 3 53 13 53 -1.54 -128 0 0 52 46 21 5 45 51.4 27 213 -12 52 24 40 53 8 15 52 15 9 53 17 59 -1.54 -127 0 0 52 50 33 5 46 0.4 27 214 -12 52 28 52 53 12 27 52 19 20 53 22 11 -1.54 -126 0 0 52 54 50 5 46 9.3 26 215 -13 52 33 8 53 16 44 52 23 37 53 26 29 -1.54 -125 0 0 52 59 12 5 46 18.0 26 216 -13 52 37 30 53 21 6 52 27 59 53 30 51 -1.54 -124 0 0 53 3 39 5 46 26.6 25 217 -13 52 41 57 53 25 34 52 32 26 53 35 19 -1.54 -123 0 0 53 8 11 5 46 35.0 25 218 -14 52 46 29 53 30 6 52 36 58 53 39 51 -1.54 -122 0 0 53 12 48 5 46 43.3 24 219 -14 52 51 6 53 34 43 52 41 34 53 44 28 -1.54 -121 0 0 53 17 29 5 46 51.4 24 220 -14 52 55 47 53 39 24 52 46 15 53 49 10 -1.54 -120 0 0 53 22 15 5 46 59.3 23 221 -14 53 0 32 53 44 10 52 51 0 53 53 56 -1.54 -119 0 0 53 27 5 5 47 7.1 23 222 -15 53 5 22 53 49 1 52 55 50 53 58 47 -1.54 -118 0 0 53 31 59 5 47 14.7 23 223 -15 53 10 16 53 53 55 53 0 44 54 3 41 -1.54 -117 0 0 53 36 58 5 47 22.1 22 224 -15 53 15 15 53 58 54 53 5 43 54 8 40 -1.54 -116 0 0 53 42 1 5 47 29.4 22 225 -15 53 20 17 54 3 57 53 10 45 54 13 43 -1.54 -115 0 0 53 47 7 5 47 36.5 21 226 -16 53 25 23 54 9 4 53 15 51 54 18 50 -1.54 -114 0 0 53 52 17 5 47 43.4 21 227 -16 53 30 33 54 14 14 53 21 0 54 24 0 -1.54 -113 0 0 53 57 30 5 47 50.1 20 228 -16 53 35 46 54 19 28 53 26 14 54 29 14 -1.54 -112 0 0 54 2 47 5 47 56.7 20 229 -16 53 41 3 54 24 45 53 31 30 54 34 31 -1.54 -111 0 0 54 8 8 5 48 3.1 19 230 -16 53 46 23 54 30 5 53 36 50 54 39 52 -1.54 -110 0 0 54 13 31 5 48 9.3 19 231 -16 53 51 46 54 35 29 53 42 14 54 45 16 -1.54 -109 0 0 54 18 57 5 48 15.3 18 231 -17 53 57 12 54 40 55 53 47 40 54 50 42 -1.54 -108 0 0 54 24 27 5 48 21.1 17 232 -17 54 2 42 54 46 25 53 53 9 54 56 12 -1.54 -107 0 0 54 29 59 5 48 26.8 17 233 -17 54 8 13 54 51 57 53 58 40 55 1 44 -1.54 -106 0 0 54 35 33 5 48 32.3 16 234 -17 54 13 48 54 57 32 54 4 15 55 7 19 -1.54 -105 0 0 54 41 10 5 48 37.5 16 235 -17 54 19 25 55 3 9 54 9 51 55 12 56 -1.54 -104 0 0 54 46 50 5 48 42.6 15 236 -17 54 25 4 55 8 49 54 15 31 55 18 36 -1.54 -103 0 0 54 52 31 5 48 47.5 15 237 -17 54 30 45 55 14 31 54 21 12 55 24 18 -1.54 -102 0 0 54 58 15 5 48 52.3 14 238 -17 54 36 29 55 20 14 54 26 55 55 30 2 -1.54 -101 0 0 55 4 1 5 48 56.8 14 239 -17 54 42 14 55 26 0 54 32 41 55 35 48 -1.55 -100 0 0 55 9 48 5 49 1.1 13 240 -17 54 48 1 55 31 48 54 38 28 55 41 35 -1.55 - 99 0 0 55 15 37 5 49 5.3 13 241 -17 54 53 50 55 37 37 54 44 17 55 47 24 -1.55 - 98 0 0 55 21 27 5 49 9.3 12 241 -17 54 59 40 55 43 27 54 50 7 55 53 15 -1.55 - 97 0 0 55 27 19 5 49 13.1 12 242 -17 55 5 32 55 49 19 54 55 59 55 59 7 -1.55 - 96 0 0 55 33 12 5 49 16.6 11 243 -17 55 11 25 55 55 13 55 1 52 56 5 1 -1.55 - 95 0 0 55 39 7 5 49 20.1 10 244 -17 55 17 19 56 1 7 55 7 46 56 10 55 -1.55 - 94 0 0 55 45 2 5 49 23.3 10 245 -17 55 23 14 56 7 2 55 13 41 56 16 50 -1.55 - 93 0 0 55 50 58 5 49 26.3 9 246 -17 55 29 10 56 12 59 55 19 36 56 22 47 -1.56 - 92 0 0 55 56 55 5 49 29.2 9 247 -17 55 35 7 56 18 56 55 25 33 56 28 44 -1.56 - 91 0 0 56 2 52 5 49 31.8 8 247 -17 55 41 4 56 24 53 55 31 30 56 34 41 -1.56 - 90 0 0 56 8 50 5 49 34.3 8 248 -17 55 47 2 56 30 51 55 37 28 56 40 39 -1.56 - 89 0 0 56 14 48 5 49 36.6 7 249 -17 55 53 0 56 36 49 55 43 26 56 46 37 -1.57 - 88 0 0 56 20 47 5 49 38.7 6 250 -17 55 58 59 56 42 48 55 49 24 56 52 36 -1.57 - 87 0 0 56 26 45 5 49 40.6 6 251 -17 56 4 57 56 48 46 55 55 23 56 58 34 -1.58 - 86 0 0 56 32 43 5 49 42.4 5 252 -17 56 10 55 56 54 45 56 1 21 57 4 33 -1.58 - 85 0 0 56 38 42 5 49 43.9 5 253 -16 56 16 53 57 0 43 56 7 19 57 10 31 -1.59 - 84 0 0 56 44 40 5 49 45.3 4 253 -16 56 22 51 57 6 41 56 13 17 57 16 29 -1.60 - 83 0 0 56 50 37 5 49 46.6 4 254 -16 56 28 49 57 12 39 56 19 15 57 22 27 -1.61 - 82 0 0 56 56 34 5 49 47.6 3 255 -16 56 34 46 57 18 36 56 25 12 57 28 24 -1.63 - 81 0 0 57 2 31 5 49 48.5 3 256 -16 56 40 43 57 24 32 56 31 8 57 34 21 -1.65 - 80 0 0 57 8 27 5 49 49.1 2 257 -16 56 46 38 57 30 28 56 37 4 57 40 16 -1.69 - 79 0 0 57 14 22 5 49 49.7 1 258 -15 56 52 33 57 36 23 56 42 59 57 46 11 -1.75 - 78 0 0 57 20 15 5 49 50.0 1 258 -15 56 58 27 57 42 17 56 48 53 57 52 5 -1.89 - 77 0 0 57 26 8 5 49 50.2 0 259 -15 57 4 20 57 48 10 56 54 46 57 57 58 -2.45 Uncertainty in time = +/- 2 secs Prediction of 2023 Apr 29.2 Data for the target star ------------------------ * name: UCAC4 424-053059 * constellation : Sextans * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 10 21 03.1074 DE: -05 23 13.638 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 10 21 03.1072 DE: -05 23 13.638 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 12.1 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (623) Chimaera asteroid class: approx. diameter [km]: 44 approx. diameter ["]: 0.031 distance from Earth [AU]: 1.97510 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#93 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): 0.011", 0.003", 125.38° remarks: * orbital elements for (623)Chimaera : Mean anomaly = 96.7113612268 deg Arg. of pericenter = 124.8012628745 deg Long. of node = 308.2988533908 deg Inclination = 14.1231319761 deg Eccentricity = 0.1113227972 Semimajor axis = 2.4619831850 AU Perihelion dist = 2.1879083302 AU Mag: H = 10.79, G = 0.15 Epoch of elements : MJD 60072.23666667 TDT (2023 May 08.2367) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#932023Apr24,6.80,2023,5,8,5.680720,-0.012574,0.835302,3.635368,0.055735,0.004925,-0.001418,0.000000,0.000000 -155.4543,-5.5054,93.93,17.02,False UCAC4 424-053059,10.35086318,-5.3871218,0.00,12.10,0.00,0.0,0,,10.37037591,-5.5054147,3.32,0.00,0,0,0 623,Chimaera,15.37,43.8,1.9751,0,0,1.085,0.24,,2.8,0 0,96.6510,2023,5,8,124.8013,308.2989,14.1231,0.11132,2.46198,2.18791,10.82,5.0,0.15 1.221,0.0107,0.0030,125,0.0068,Known errors,-1.00,-1,-1,-1 20230508_053059,60063.18 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Apr 29, 04:23 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org