IOTA/IOTA-ES occultation update for (171) Ophelia / UCAC4 386-151214 event on 2024 Dec 07, 04:18 UT Visible from Summary ------- On 2024 Dec 07 UT, the 114.317437412925 km diameter asteroid (171) Ophelia will occult a 12.0 mag star in the constellation Aquarius for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 3.11 mag to 15.03 mag (the magnitude of the asteroid) for at most 5.410 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: 2024 Dec 07, 04:13 - 2024 Dec 07, 04:23 * geocentric midpoint of event [JD]: 2460651.67945242 * magnitude of target star: 11.98 * magnitude drop [mag]: 3.11 * estimated maximum duration [s]: 5.410 * Moon: 34 % sunlit, 6° distance * Sun: 77° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 129 * 1 sigma uncertainty interval [path widths]: +/- 0.05 * 1 sigma uncertainty interval [seconds]: +/- 1.4 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.010, +/- 0.004) * 1 sigma uncertainty ellipse (major, minor, PA): (0.011", 0.002", 71°) * approx speed of asteroid's shadow [km/s]: 21.1743 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 386-151214 by 171 Ophelia on 2024 Dec 7 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 107 0 0 3 38 52 4 13 56.8 1 103 63 3 3 15 4 14 40 2 59 49 4 18 8 .... 108 0 0 3 25 50 4 13 57.0 2 103 63 2 50 17 4 1 35 2 46 52 4 5 3 -0.32 109 0 0 3 13 19 4 13 57.2 3 103 64 2 37 49 3 49 1 2 34 24 3 52 28 -0.39 110 0 0 3 1 18 4 13 57.6 4 103 64 2 25 52 3 36 56 2 22 27 3 40 24 -0.42 111 0 0 2 49 48 4 13 58.0 5 103 64 2 14 25 3 25 23 2 11 0 3 28 50 -0.44 112 0 0 2 38 48 4 13 58.6 6 103 65 2 3 28 3 14 20 2 0 3 3 17 47 -0.45 113 0 0 2 28 19 4 13 59.2 7 103 65 1 53 2 3 3 48 1 49 37 3 7 14 -0.46 114 0 0 2 18 21 4 14 0.0 8 103 65 1 43 6 2 53 47 1 39 42 2 57 13 -0.47 115 0 0 2 8 54 4 14 0.9 9 103 65 1 33 42 2 44 17 1 30 18 2 47 43 -0.47 116 0 0 1 59 58 4 14 1.9 10 103 65 1 24 48 2 35 19 1 21 25 2 38 44 -0.48 117 0 0 1 51 33 4 14 3.0 11 103 65 1 16 25 2 26 51 1 13 2 2 30 17 -0.48 118 0 0 1 43 39 4 14 4.1 12 103 65 1 8 34 2 18 56 1 5 11 2 22 21 -0.48 119 0 0 1 36 17 4 14 5.4 13 103 65 1 1 14 2 11 32 0 57 51 2 14 57 -0.49 120 0 0 1 29 27 4 14 6.8 14 103 65 0 54 25 2 4 39 0 51 3 2 8 4 -0.49 121 0 0 1 23 7 4 14 8.3 15 104 65 0 48 8 1 58 18 0 44 45 2 1 43 -0.49 122 0 0 1 17 20 4 14 9.9 16 104 65 0 42 22 1 52 29 0 38 59 1 55 54 -0.49 123 0 0 1 12 4 4 14 11.6 17 104 65 0 37 7 1 47 12 0 33 45 1 50 36 -0.49 124 0 0 1 7 20 4 14 13.4 18 104 64 0 32 25 1 42 26 0 29 3 1 45 51 -0.50 125 0 0 1 3 8 4 14 15.3 19 104 64 0 28 14 1 38 13 0 24 52 1 41 37 -0.50 126 0 0 0 59 28 4 14 17.2 20 104 64 0 24 35 1 34 32 0 21 13 1 37 56 -0.50 127 0 0 0 56 19 4 14 19.3 21 104 63 0 21 27 1 31 23 0 18 5 1 34 47 -0.50 128 0 0 0 53 43 4 14 21.5 22 104 63 0 18 51 1 28 46 0 15 29 1 32 10 -0.50 129 0 0 0 51 39 4 14 23.8 23 104 62 0 16 47 1 26 41 0 13 26 1 30 5 -0.50 130 0 0 0 50 7 4 14 26.1 24 104 62 0 15 16 1 25 9 0 11 54 1 28 33 -0.50 131 0 0 0 49 7 4 14 28.6 25 104 61 0 14 16 1 24 9 0 10 54 1 27 33 -0.50 132 0 0 0 48 39 4 14 31.2 26 105 61 0 13 48 1 23 41 0 10 27 1 27 5 -0.50 133 0 0 0 48 44 4 14 33.8 27 105 60 0 13 53 1 23 46 0 10 31 1 27 10 -0.50 134 0 0 0 49 21 4 14 36.6 28 105 60 0 14 29 1 24 24 0 11 8 1 27 47 -0.51 135 0 0 0 50 30 4 14 39.4 29 105 59 0 15 38 1 25 33 0 12 16 1 28 57 -0.51 136 0 0 0 52 12 4 14 42.3 30 105 58 0 17 19 1 27 16 0 13 57 1 30 40 -0.51 137 0 0 0 54 26 4 14 45.3 31 105 58 0 19 32 1 29 30 0 16 10 1 32 54 -0.51 138 0 0 0 57 12 4 14 48.4 32 106 57 0 22 17 1 32 18 0 18 56 1 35 42 -0.51 139 0 0 1 0 31 4 14 51.6 33 106 56 0 25 35 1 35 38 0 22 13 1 39 2 -0.51 140 0 0 1 4 22 4 14 54.9 34 106 55 0 29 25 1 39 30 0 26 3 1 42 55 -0.51 141 0 0 1 8 46 4 14 58.3 35 106 55 0 33 47 1 43 56 0 30 25 1 47 20 -0.51 142 0 0 1 13 42 4 15 1.7 35 107 54 0 38 42 1 48 53 0 35 19 1 52 18 -0.51 143 0 0 1 19 11 4 15 5.2 36 107 53 0 44 9 1 54 24 0 40 46 1 57 49 -0.51 144 0 0 1 25 12 4 15 8.9 37 107 52 0 50 8 2 0 27 0 46 45 2 3 52 -0.51 145 0 0 1 31 45 4 15 12.6 38 108 51 0 56 39 2 7 3 0 53 16 2 10 28 -0.51 146 0 0 1 38 51 4 15 16.3 39 108 51 1 3 43 2 14 11 1 0 20 2 17 37 -0.51 147 0 0 1 46 30 4 15 20.2 40 108 50 1 11 19 2 21 52 1 7 56 2 25 18 -0.51 148 0 0 1 54 41 4 15 24.2 41 109 49 1 19 27 2 30 6 1 16 4 2 33 32 -0.51 149 0 0 2 3 24 4 15 28.2 42 109 48 1 28 8 2 38 52 1 24 44 2 42 18 -0.51 150 0 0 2 12 40 4 15 32.3 43 110 47 1 37 21 2 48 10 1 33 56 2 51 37 -0.51 151 0 0 2 22 28 4 15 36.5 44 110 46 1 47 6 2 58 2 1 43 41 3 1 29 -0.51 152 0 0 2 32 48 4 15 40.7 45 111 45 1 57 23 3 8 25 1 53 58 3 11 52 -0.51 153 0 0 2 43 41 4 15 45.0 46 111 44 2 8 12 3 19 21 2 4 47 3 22 49 -0.51 154 0 0 2 55 5 4 15 49.4 46 112 43 2 19 33 3 30 49 2 16 7 3 34 17 -0.51 155 0 0 3 7 2 4 15 53.9 47 113 42 2 31 26 3 42 50 2 28 0 3 46 18 -0.51 156 0 0 3 19 31 4 15 58.4 48 113 41 2 43 51 3 55 22 2 40 25 3 58 51 -0.51 157 0 0 3 32 31 4 16 3.1 49 114 40 2 56 48 4 8 27 2 53 21 4 11 56 -0.51 158 0 0 3 46 4 4 16 7.7 50 115 39 3 10 16 4 22 4 3 6 49 4 25 33 -0.51 159 0 0 4 0 8 4 16 12.5 51 116 38 3 24 16 4 36 12 3 20 49 4 39 42 -0.51 160 0 0 4 14 44 4 16 17.3 51 117 38 3 38 48 4 50 52 3 35 20 4 54 22 -0.51 161 0 0 4 29 51 4 16 22.2 52 118 37 3 53 50 5 6 4 3 50 22 5 9 35 -0.51 162 0 0 4 45 30 4 16 27.1 53 119 36 4 9 24 5 21 47 4 5 56 5 25 18 -0.51 163 0 0 5 1 39 4 16 32.1 54 120 35 4 25 29 5 38 2 4 22 0 5 41 33 -0.51 164 0 0 5 18 20 4 16 37.1 55 121 34 4 42 5 5 54 47 4 38 36 5 58 19 -0.51 165 0 0 5 35 31 4 16 42.2 55 122 32 4 59 12 6 12 3 4 55 42 6 15 36 -0.51 166 0 0 5 53 13 4 16 47.4 56 123 31 5 16 49 6 29 50 5 13 18 6 33 24 -0.51 167 0 0 6 11 26 4 16 52.6 57 125 30 5 34 56 6 48 8 5 31 25 6 51 42 -0.51 168 0 0 6 30 8 4 16 57.9 57 126 29 5 53 33 7 6 56 5 50 1 7 10 30 -0.51 169 0 0 6 49 20 4 17 3.2 58 127 28 6 12 40 7 26 13 6 9 8 7 29 48 -0.51 170 0 0 7 9 2 4 17 8.5 59 129 27 6 32 16 7 46 0 6 28 43 7 49 35 -0.51 171 0 0 7 29 13 4 17 13.9 59 131 26 6 52 21 8 6 17 6 48 48 8 9 52 -0.51 172 0 0 7 49 53 4 17 19.4 60 132 25 7 12 56 8 27 2 7 9 22 8 30 39 -0.51 173 0 0 8 11 1 4 17 24.9 60 134 24 7 33 59 8 48 16 7 30 25 8 51 53 -0.51 174 0 0 8 32 38 4 17 30.4 61 136 23 7 55 30 9 9 59 7 51 55 9 13 36 -0.51 175 0 0 8 54 42 4 17 35.9 61 138 22 8 17 29 9 32 9 8 13 53 9 35 47 -0.51 176 0 0 9 17 14 4 17 41.5 61 140 21 8 39 55 9 54 47 8 36 19 9 58 26 -0.51 177 0 0 9 40 13 4 17 47.1 62 142 20 9 2 48 10 17 52 8 59 12 10 21 31 -0.51 178 0 0 10 3 39 4 17 52.7 62 144 19 9 26 8 10 41 24 9 22 31 10 45 3 -0.51 179 0 0 10 27 31 4 17 58.4 62 146 18 9 49 54 11 5 22 9 46 17 11 9 2 -0.51 -180 0 0 10 51 48 4 18 4.1 62 148 17 10 14 6 11 29 45 10 10 27 11 33 26 -0.51 -179 0 0 11 16 31 4 18 9.8 63 151 16 10 38 42 11 54 33 10 35 4 11 58 15 -0.51 -178 0 0 11 41 38 4 18 15.5 63 153 15 11 3 43 12 19 46 11 0 4 12 23 28 -0.51 -177 0 0 12 7 9 4 18 21.2 63 155 13 11 29 8 12 45 23 11 25 29 12 49 6 -0.51 -176 0 0 12 33 3 4 18 26.9 63 158 12 11 54 57 13 11 24 11 51 17 13 15 7 -0.51 -175 0 0 12 59 20 4 18 32.6 63 160 11 12 21 8 13 37 47 12 17 27 13 41 30 -0.51 -174 0 0 13 25 59 4 18 38.4 63 162 10 12 47 42 14 4 32 12 44 0 14 8 16 -0.51 -173 0 0 13 53 0 4 18 44.1 63 165 9 13 14 37 14 31 38 13 10 55 14 35 23 -0.51 -172 0 0 14 20 22 4 18 49.8 62 167 8 13 41 52 14 59 5 13 38 10 15 2 51 -0.51 -171 0 0 14 48 3 4 18 55.5 62 169 7 14 9 28 15 26 53 14 5 45 15 30 39 -0.51 -170 0 0 15 16 4 4 19 1.2 62 171 6 14 37 23 15 54 59 14 33 40 15 58 45 -0.51 -169 0 0 15 44 23 4 19 6.9 61 174 5 15 5 37 16 23 24 15 1 53 16 27 11 -0.51 -168 0 0 16 13 0 4 19 12.6 61 176 4 15 34 8 16 52 6 15 30 24 16 55 54 -0.51 -167 0 0 16 41 54 4 19 18.2 61 178 3 16 2 57 17 21 5 15 59 12 17 24 54 -0.51 -166 0 0 17 11 4 4 19 23.8 60 180 1 16 32 2 17 50 21 16 28 16 17 54 9 -0.51 -165 0 0 17 40 29 4 19 29.4 60 182 0 17 1 22 18 19 51 16 57 36 18 23 40 -0.51 -164 0 0 18 10 8 4 19 34.9 59 184 -1 17 30 56 18 49 35 17 27 10 18 53 25 -0.51 -163 0 0 18 40 1 4 19 40.5 59 186 -2 18 0 44 19 19 33 17 56 57 19 23 23 -0.51 -162 0 0 19 10 6 4 19 45.9 58 187 -3 18 30 45 19 49 43 18 26 58 19 53 34 -0.51 -161 0 0 19 40 23 4 19 51.4 57 189 -4 19 0 57 20 20 5 18 57 10 20 23 56 -0.51 -160 0 0 20 10 51 4 19 56.7 57 191 -5 19 31 21 20 50 37 19 27 32 20 54 28 -0.51 -159 0 0 20 41 28 4 20 2.1 56 192 -6 20 1 54 21 21 18 19 58 5 21 25 10 -0.51 -158 0 0 21 12 14 4 20 7.3 55 194 -7 20 32 36 21 52 8 20 28 47 21 56 0 -0.51 -157 0 0 21 43 8 4 20 12.6 54 196 -8 21 3 25 22 23 6 20 59 36 22 26 58 -0.51 -156 0 0 22 14 8 4 20 17.7 54 197 -9 21 34 22 22 54 10 21 30 33 22 58 3 -0.51 -155 0 0 22 45 14 4 20 22.8 53 198 -10 22 5 25 23 25 19 22 1 35 23 29 13 -0.51 -154 0 0 23 16 25 4 20 27.9 52 200 -11 22 36 33 23 56 33 22 32 42 24 0 27 -0.51 -153 0 0 23 47 39 4 20 32.8 51 201 -13 23 7 44 24 27 51 23 3 54 24 31 45 -0.51 -152 0 0 24 18 57 4 20 37.7 51 202 -14 23 38 59 24 59 11 23 35 8 25 3 5 -0.51 -151 0 0 24 50 16 4 20 42.5 50 203 -15 24 10 15 25 30 32 24 6 24 25 34 27 -0.51 -150 0 0 25 21 35 4 20 47.3 49 205 -16 24 41 32 26 1 54 24 37 41 26 5 49 -0.51 -149 0 0 25 52 54 4 20 52.0 48 206 -17 25 12 49 26 33 15 25 8 58 26 37 10 -0.51 -148 0 0 26 24 12 4 20 56.5 47 207 -18 25 44 5 27 4 35 25 40 13 27 8 30 -0.51 -147 0 0 26 55 27 4 21 1.0 46 208 -19 26 15 19 27 35 52 26 11 27 27 39 47 -0.51 -146 0 0 27 26 39 4 21 5.5 45 209 -20 26 46 30 28 7 5 26 42 38 28 11 1 -0.51 -145 0 0 27 57 47 4 21 9.8 44 210 -21 27 17 37 28 38 14 27 13 44 28 42 10 -0.51 -144 0 0 28 28 50 4 21 14.0 44 211 -22 27 48 38 29 9 18 27 44 46 29 13 13 -0.51 -143 0 0 28 59 46 4 21 18.2 43 212 -23 28 19 34 29 40 15 28 15 42 29 44 10 -0.51 -142 0 0 29 30 35 4 21 22.3 42 213 -24 28 50 23 30 11 4 28 46 30 30 15 0 -0.51 -141 0 0 30 1 16 4 21 26.2 41 214 -25 29 21 4 30 41 45 29 17 11 30 45 41 -0.51 -140 0 0 30 31 48 4 21 30.1 40 215 -26 29 51 36 31 12 17 29 47 44 31 16 13 -0.51 -139 0 0 31 2 10 4 21 33.9 39 215 -27 30 21 59 31 42 39 30 18 6 31 46 34 -0.51 -138 0 0 31 32 22 4 21 37.6 38 216 -28 30 52 11 32 12 50 30 48 19 32 16 45 -0.51 -137 0 0 32 2 22 4 21 41.2 37 217 -29 31 22 12 32 42 49 31 18 20 32 46 44 -0.51 -136 0 0 32 32 10 4 21 44.7 36 218 -29 31 52 1 33 12 35 31 48 9 33 16 30 -0.51 -135 0 0 33 1 44 4 21 48.1 35 219 -30 32 21 37 33 42 8 32 17 45 33 46 3 -0.51 -134 0 0 33 31 5 4 21 51.4 34 220 -31 32 50 59 34 11 27 32 47 7 34 15 22 -0.51 -133 0 0 34 0 11 4 21 54.6 33 220 -32 33 20 7 34 40 31 33 16 16 34 44 26 -0.51 -132 0 0 34 29 2 4 21 57.7 33 221 -33 33 49 0 35 9 20 33 45 9 35 13 15 -0.51 -131 0 0 34 57 37 4 22 0.7 32 222 -34 34 17 37 35 37 52 34 13 46 35 41 47 -0.51 -130 0 0 35 25 55 4 22 3.6 31 223 -35 34 45 58 36 6 8 34 42 8 36 10 2 -0.51 -129 0 0 35 53 56 4 22 6.4 30 223 -36 35 14 2 36 34 6 35 10 12 36 38 0 -0.51 -128 0 0 36 21 40 4 22 9.1 29 224 -37 35 41 49 37 1 47 35 37 58 37 5 40 -0.51 -127 0 0 36 49 5 4 22 11.8 28 225 -37 36 9 17 37 29 8 36 5 27 37 33 2 -0.51 -126 0 0 37 16 11 4 22 14.3 27 226 -38 36 36 27 37 56 11 36 32 37 38 0 4 -0.51 -125 0 0 37 42 58 4 22 16.7 26 226 -39 37 3 17 38 22 54 36 59 28 38 26 47 -0.51 -124 0 0 38 9 25 4 22 19.1 25 227 -40 37 29 48 38 49 17 37 25 59 38 53 10 -0.51 -123 0 0 38 35 31 4 22 21.3 25 228 -41 37 55 59 39 15 20 37 52 10 39 19 12 -0.51 -122 0 0 39 1 18 4 22 23.5 24 229 -41 38 21 49 39 41 2 38 18 1 39 44 53 -0.51 -121 0 0 39 26 43 4 22 25.5 23 229 -42 38 47 18 40 6 23 38 43 31 40 10 14 -0.51 -120 0 0 39 51 47 4 22 27.5 22 230 -43 39 12 27 40 31 22 39 8 39 40 35 13 -0.51 -119 0 0 40 16 29 4 22 29.4 21 231 -44 39 37 14 40 56 0 39 33 27 40 59 50 -0.51 -118 0 0 40 40 49 4 22 31.2 20 231 -44 40 1 39 41 20 15 39 57 52 41 24 5 -0.51 -117 0 0 41 4 47 4 22 32.9 19 232 -45 40 25 42 41 44 8 40 21 56 41 47 57 -0.51 -116 0 0 41 28 23 4 22 34.6 19 233 -46 40 49 22 42 7 39 40 45 37 42 11 27 -0.51 -115 0 0 41 51 36 4 22 36.1 18 234 -46 41 12 40 42 30 47 41 8 55 42 34 35 -0.51 -114 0 0 42 14 26 4 22 37.6 17 234 -47 41 35 36 42 53 31 41 31 51 42 57 19 -0.51 -113 0 0 42 36 53 4 22 39.0 16 235 -48 41 58 8 43 15 53 41 54 24 43 19 40 -0.51 -112 0 0 42 58 57 4 22 40.3 15 236 -48 42 20 17 43 37 52 42 16 34 43 41 38 -0.51 -111 0 0 43 20 38 4 22 41.5 14 236 -49 42 42 3 43 59 27 42 38 20 44 3 13 -0.51 -110 0 0 43 41 55 4 22 42.7 14 237 -49 43 3 26 44 20 38 42 59 44 44 24 24 -0.51 -109 0 0 44 2 49 4 22 43.8 13 238 -50 43 24 26 44 41 27 43 20 44 44 45 12 -0.51 -108 0 0 44 23 19 4 22 44.8 12 239 -51 43 45 2 45 1 51 43 41 20 45 5 36 -0.51 -107 0 0 44 43 26 4 22 45.7 11 239 -51 44 5 14 45 21 53 44 1 34 45 25 36 -0.51 -106 0 0 45 3 10 4 22 46.6 10 240 -52 44 25 3 45 41 30 44 21 23 45 45 13 -0.51 -105 0 0 45 22 29 4 22 47.4 10 241 -52 44 44 29 46 0 44 44 40 49 46 4 27 -0.51 -104 0 0 45 41 25 4 22 48.1 9 241 -53 45 3 31 46 19 34 44 59 52 46 23 16 -0.51 -103 0 0 45 59 58 4 22 48.8 8 242 -53 45 22 9 46 38 1 45 18 30 46 41 42 -0.51 -102 0 0 46 18 7 4 22 49.4 7 243 -54 45 40 24 46 56 4 45 36 46 46 59 45 -0.51 -101 0 0 46 35 53 4 22 49.9 7 244 -54 45 58 15 47 13 44 45 54 38 47 17 24 -0.52 -100 0 0 46 53 15 4 22 50.4 6 244 -55 46 15 43 47 31 0 46 12 6 47 34 40 -0.52 - 99 0 0 47 10 14 4 22 50.8 5 245 -55 46 32 48 47 47 53 46 29 11 47 51 32 -0.52 - 98 0 0 47 26 49 4 22 51.2 4 246 -55 46 49 29 48 4 23 46 45 53 48 8 1 -0.52 - 97 0 0 47 43 2 4 22 51.5 4 247 -56 47 5 47 48 20 29 47 2 12 48 24 8 -0.52 - 96 0 0 47 58 51 4 22 51.7 3 247 -56 47 21 42 48 36 13 47 18 7 48 39 50 -0.53 - 95 0 0 48 14 17 4 22 51.9 2 248 -56 47 37 14 48 51 34 47 33 39 48 55 10 -0.53 - 94 0 0 48 29 20 4 22 52.0 2 249 -57 47 52 22 49 6 31 47 48 49 49 10 8 -0.55 - 93 0 0 48 44 1 4 22 52.1 1 250 -57 48 7 9 49 21 6 48 3 35 49 24 42 -0.58 - 92 0 0 48 58 19 4 22 52.1 0 250 -57 48 21 32 .. .. .. 48 17 59 .. .. .. -0.93 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: UCAC4 386-151214 * constellation : Aquarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 22 19 56.7524 DE: -12 50 52.216 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 22 19 56.7524 DE: -12 50 52.216 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 12.0 * B mag [mag]: 13.0 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (171) Ophelia asteroid class: approx. diameter [km]: 114 approx. diameter ["]: 0.044 distance from Earth [AU]: 3.62020 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#136 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", 0.002", 70.848° remarks: * orbital elements for (171)Ophelia : Mean anomaly = 195.7111852700 deg Arg. of pericenter = 55.3263185570 deg Long. of node = 100.4696019241 deg Inclination = 2.5470125441 deg Eccentricity = 0.1325033473 Semimajor axis = 3.1283997525 AU Perihelion dist = 2.7138763137 AU Mag: H = 8.64, G = 0.15 Epoch of elements : MJD 60651.17945225 TDT (2024 Dec 07.1795) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#1362023Apr24,5.41,2024,12,7,4.306858,-0.180844,0.419246,10.978129,4.724015,0.005538,0.002090,0.000000,0.000000 -165.7197,-12.7237,113.28,-22.66,False UCAC4 386-151214,22.33243126,-12.8478377,13.00,11.98,11.43,0.1,4,K,22.35453899,-12.7237231,3.12,3.21,0,0,0 171,Ophelia,15.03,114.580,3.6202,0,0,1.823,11.48,,5.8,0 0,195.6792,2024,12,7,55.3263,100.4696,2.5470,0.13250,3.12840,2.71388,8.64,5.0,0.15 1.048,0.0110,0.0020,71,0.0021,Known errors,1.02,0,-1,-1 20241207_151214,60140.73 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 17:31 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org