IOTA/IOTA-ES occultation update for (3816) Chugainov / UCAC4 336-189531 event on 2024 Oct 31, 18:19 UT Visible from Summary ------- On 2024 Oct 31 UT, the 12.9396699572779 km diameter asteroid (3816) Chugainov will occult a 10.4 mag star in the constellation Sagittarius for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 7.25 mag to 17.62 mag (the magnitude of the asteroid) for at most 0.650 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: 2024 Oct 31, 18:16 - 2024 Oct 31, 18:22 * geocentric midpoint of event [JD]: 2460615.26322321 * magnitude of target star: 10.37 * magnitude drop [mag]: 7.25 * estimated maximum duration [s]: 0.650 * Moon: 1 % sunlit, 79° distance * Sun: 70° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 24 * 1 sigma uncertainty interval [path widths]: +/- 0.34 * 1 sigma uncertainty interval [seconds]: +/- 0.8 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.009, +/- 0.003) * 1 sigma uncertainty ellipse (major, minor, PA): (0.009", 0.003", 75°) * approx speed of asteroid's shadow [km/s]: 26.5294 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 336-189531 by 3816 Chugainov on 2024 Oct 31 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 -103 0 0 24 44 20 18 16 6.9 0 115 51 24 37 18 24 51 23 24 32 37 24 56 6 24 40 49 24 47 51 .... -102 0 0 24 18 34 18 16 6.9 1 116 51 24 11 34 24 25 35 24 6 54 24 30 17 24 15 5 24 22 4 -0.33 -101 0 0 23 53 20 18 16 7.1 2 116 52 23 46 22 24 0 19 23 41 42 24 5 0 23 49 51 23 56 49 -0.61 -100 0 0 23 28 38 18 16 7.4 3 117 52 23 21 41 23 35 35 23 17 3 23 40 15 23 25 9 23 32 6 -0.72 - 99 0 0 23 4 28 18 16 7.7 4 117 53 22 57 32 23 11 23 22 52 55 23 16 2 23 1 0 23 7 55 -0.77 - 98 0 0 22 40 50 18 16 8.2 5 117 53 22 33 57 22 47 45 22 29 21 22 52 22 22 37 24 22 44 17 -0.80 - 97 0 0 22 17 47 18 16 8.7 6 118 53 22 10 55 22 24 39 22 6 20 22 29 16 22 14 21 22 21 13 -0.82 - 96 0 0 21 55 17 18 16 9.4 7 118 54 21 48 27 22 2 8 21 43 53 22 6 44 21 51 52 21 58 42 -0.84 - 95 0 0 21 33 21 18 16 10.2 8 119 54 21 26 33 21 40 11 21 22 0 21 44 45 21 29 57 21 36 46 -0.85 - 94 0 0 21 12 0 18 16 11.0 9 119 54 21 5 13 21 18 48 21 0 41 21 23 22 21 8 37 21 15 24 -0.86 - 93 0 0 20 51 14 18 16 12.0 10 119 54 20 44 28 20 58 1 20 39 57 21 2 33 20 47 52 20 54 37 -0.86 - 92 0 0 20 31 4 18 16 13.0 11 120 55 20 24 19 20 37 49 20 19 49 20 42 20 20 27 42 20 34 26 -0.87 - 91 0 0 20 11 29 18 16 14.2 12 120 55 20 4 46 20 18 13 20 0 16 20 22 43 20 8 7 20 14 50 -0.88 - 90 0 0 19 52 30 18 16 15.4 13 121 55 19 45 48 19 59 13 19 41 20 20 3 42 19 49 9 19 55 51 -0.88 - 89 0 0 19 34 8 18 16 16.7 14 121 55 19 27 27 19 40 49 19 23 0 19 45 18 19 30 48 19 37 28 -0.88 - 88 0 0 19 16 22 18 16 18.1 15 121 55 19 9 43 19 23 2 19 5 16 19 27 30 19 13 3 19 19 42 -0.89 - 87 0 0 18 59 13 18 16 19.7 16 122 55 18 52 35 19 5 52 18 48 9 19 10 19 18 55 55 19 2 32 -0.89 - 86 0 0 18 42 42 18 16 21.3 17 122 55 18 36 5 18 49 20 18 31 40 18 53 46 18 39 24 18 46 0 -0.89 - 85 0 0 18 26 48 18 16 22.9 18 123 55 18 20 12 18 33 24 18 15 48 18 37 50 18 23 30 18 30 6 -0.90 - 84 0 0 18 11 31 18 16 24.7 19 123 55 18 4 56 18 18 7 18 0 33 18 22 32 18 8 14 18 14 49 -0.90 - 83 0 0 17 56 53 18 16 26.6 20 123 54 17 50 19 18 3 27 17 45 56 18 7 51 17 53 36 18 0 9 -0.90 - 82 0 0 17 42 52 18 16 28.5 21 124 54 17 36 19 17 49 25 17 31 57 17 53 49 17 39 36 17 46 8 -0.90 - 81 0 0 17 29 30 18 16 30.6 22 124 54 17 22 58 17 36 2 17 18 36 17 40 25 17 26 14 17 32 45 -0.90 - 80 0 0 17 16 46 18 16 32.7 22 125 54 17 10 15 17 23 17 17 5 54 17 27 40 17 13 30 17 20 1 -0.91 - 79 0 0 17 4 40 18 16 34.9 23 125 53 16 58 10 17 11 11 16 53 50 17 15 33 17 1 25 17 7 55 -0.91 - 78 0 0 16 53 13 18 16 37.2 24 126 53 16 46 44 16 59 43 16 42 24 17 4 5 16 49 59 16 56 28 -0.91 - 77 0 0 16 42 25 18 16 39.5 25 126 53 16 35 57 16 48 55 16 31 37 16 53 15 16 39 11 16 45 40 -0.91 - 76 0 0 16 32 17 18 16 42.0 26 127 52 16 25 49 16 38 45 16 21 30 16 43 5 16 29 3 16 35 30 -0.91 - 75 0 0 16 22 47 18 16 44.5 27 127 52 16 16 19 16 29 15 16 12 1 16 33 34 16 19 33 16 26 0 -0.91 - 74 0 0 16 13 56 18 16 47.1 28 128 51 16 7 29 16 20 23 16 3 11 16 24 43 16 10 43 16 17 9 -0.91 - 73 0 0 16 5 45 18 16 49.7 29 128 51 15 59 18 16 12 11 15 55 1 16 16 30 16 2 32 16 8 57 -0.92 - 72 0 0 15 58 12 18 16 52.4 29 129 50 15 51 47 16 4 39 15 47 29 16 8 57 15 55 0 16 1 25 -0.92 - 71 0 0 15 51 20 18 16 55.2 30 129 49 15 44 55 15 57 46 15 40 38 16 2 4 15 48 7 15 54 32 -0.92 - 70 0 0 15 45 7 18 16 58.1 31 130 49 15 38 42 15 51 32 15 34 25 15 55 50 15 41 55 15 48 19 -0.92 - 69 0 0 15 39 33 18 17 1.0 32 131 48 15 33 9 15 45 58 15 28 52 15 50 16 15 36 21 15 42 45 -0.92 - 68 0 0 15 34 39 18 17 4.0 33 131 48 15 28 15 15 41 4 15 23 59 15 45 21 15 31 28 15 37 51 -0.92 - 67 0 0 15 30 25 18 17 7.1 33 132 47 15 24 2 15 36 50 15 19 45 15 41 7 15 27 14 15 33 37 -0.92 - 66 0 0 15 26 51 18 17 10.2 34 133 46 15 20 27 15 33 15 15 16 11 15 37 32 15 23 39 15 30 3 -0.92 - 65 0 0 15 23 56 18 17 13.4 35 133 46 15 17 33 15 30 20 15 13 17 15 34 37 15 20 45 15 27 8 -0.92 - 64 0 0 15 21 42 18 17 16.7 36 134 45 15 15 19 15 28 6 15 11 3 15 32 23 15 18 30 15 24 53 -0.92 - 63 0 0 15 20 7 18 17 20.0 36 135 44 15 13 44 15 26 31 15 9 28 15 30 48 15 16 56 15 23 19 -0.92 - 62 0 0 15 19 12 18 17 23.3 37 135 43 15 12 49 15 25 36 15 8 34 15 29 53 15 16 1 15 22 24 -0.92 - 61 0 0 15 18 58 18 17 26.8 38 136 43 15 12 35 15 25 21 15 8 19 15 29 38 15 15 46 15 22 9 -0.93 - 60 0 0 15 19 23 18 17 30.2 38 137 42 15 13 0 15 25 47 15 8 45 15 30 4 15 16 12 15 22 35 -0.93 - 59 0 0 15 20 29 18 17 33.7 39 138 41 15 14 6 15 26 53 15 9 50 15 31 10 15 17 17 15 23 40 -0.93 - 58 0 0 15 22 14 18 17 37.3 40 139 40 15 15 51 15 28 38 15 11 35 15 32 55 15 19 3 15 25 26 -0.93 - 57 0 0 15 24 40 18 17 40.9 40 140 39 15 18 16 15 31 4 15 14 0 15 35 21 15 21 28 15 27 51 -0.93 - 56 0 0 15 27 45 18 17 44.6 41 141 38 15 21 21 15 34 10 15 17 5 15 38 27 15 24 34 15 30 57 -0.93 - 55 0 0 15 31 31 18 17 48.3 42 142 38 15 25 7 15 37 56 15 20 50 15 42 13 15 28 19 15 34 43 -0.93 - 54 0 0 15 35 57 18 17 52.1 42 143 37 15 29 32 15 42 22 15 25 16 15 46 40 15 32 45 15 39 9 -0.93 - 53 0 0 15 41 3 18 17 55.9 43 144 36 15 34 38 15 47 28 15 30 21 15 51 46 15 37 50 15 44 15 -0.93 - 52 0 0 15 46 48 18 17 59.7 43 145 35 15 40 23 15 53 14 15 36 6 15 57 33 15 43 36 15 50 1 -0.93 - 51 0 0 15 53 14 18 18 3.6 44 146 34 15 46 49 15 59 41 15 42 31 16 4 0 15 50 2 15 56 27 -0.93 - 50 0 0 16 0 21 18 18 7.5 44 147 33 15 53 54 16 6 48 15 49 36 16 11 7 15 57 8 16 3 34 -0.93 - 49 0 0 16 8 7 18 18 11.4 44 148 32 16 1 40 16 14 34 15 57 21 16 18 54 16 4 53 16 11 20 -0.93 - 48 0 0 16 16 33 18 18 15.4 45 149 31 16 10 5 16 23 1 16 5 46 16 27 21 16 13 19 16 19 46 -0.93 - 47 0 0 16 25 38 18 18 19.4 45 151 30 16 19 10 16 32 7 16 14 51 16 36 28 16 22 25 16 28 52 -0.93 - 46 0 0 16 35 24 18 18 23.4 45 152 29 16 28 55 16 41 54 16 24 36 16 46 15 16 32 10 16 38 39 -0.93 - 45 0 0 16 45 50 18 18 27.5 46 153 29 16 39 20 16 52 20 16 35 0 16 56 42 16 42 35 16 49 5 -0.93 - 44 0 0 16 56 55 18 18 31.6 46 154 28 16 50 25 17 3 26 16 46 4 17 7 48 16 53 40 17 0 10 -0.93 - 43 0 0 17 8 40 18 18 35.7 46 156 27 17 2 9 17 15 12 16 57 47 17 19 35 17 5 25 17 11 56 -0.93 - 42 0 0 17 21 5 18 18 39.8 46 157 26 17 14 32 17 27 38 17 10 10 17 32 1 17 17 49 17 24 21 -0.93 - 41 0 0 17 34 9 18 18 43.9 47 158 25 17 27 35 17 40 43 17 23 13 17 45 7 17 30 52 17 37 25 -0.93 - 40 0 0 17 47 52 18 18 48.1 47 160 24 17 41 18 17 54 27 17 36 54 17 58 51 17 44 35 17 51 9 -0.93 - 39 0 0 18 2 14 18 18 52.3 47 161 23 17 55 39 18 8 50 17 51 15 18 13 16 17 58 57 18 5 32 -0.93 - 38 0 0 18 17 16 18 18 56.5 47 162 22 18 10 39 18 23 53 18 6 15 18 28 19 18 13 58 18 20 34 -0.93 - 37 0 0 18 32 56 18 19 0.7 47 164 21 18 26 19 18 39 35 18 21 53 18 44 1 18 29 38 18 36 15 -0.93 - 36 0 0 18 49 15 18 19 4.9 47 165 20 18 42 36 18 55 55 18 38 10 19 0 23 18 45 56 18 52 35 -0.93 - 35 0 0 19 6 13 18 19 9.1 47 167 19 18 59 33 19 12 54 18 55 6 19 17 22 19 2 53 19 9 33 -0.93 - 34 0 0 19 23 49 18 19 13.3 47 168 18 19 17 8 19 30 31 19 12 40 19 35 0 19 20 28 19 27 10 -0.93 - 33 0 0 19 42 3 18 19 17.5 47 169 17 19 35 20 19 48 46 19 30 51 19 53 17 19 38 42 19 45 24 -0.93 - 32 0 0 20 0 55 18 19 21.7 47 171 16 19 54 11 20 7 40 19 49 41 20 12 11 19 57 33 20 4 17 -0.93 - 31 0 0 20 20 24 18 19 25.9 46 172 15 20 13 39 20 27 11 20 9 8 20 31 43 20 17 2 20 23 47 -0.93 - 30 0 0 20 40 31 18 19 30.1 46 174 14 20 33 44 20 47 19 20 29 12 20 51 52 20 37 8 20 43 54 -0.93 - 29 0 0 21 1 15 18 19 34.3 46 175 13 20 54 26 21 8 4 20 49 54 21 12 38 20 57 51 21 4 39 -0.93 - 28 0 0 21 22 35 18 19 38.4 46 176 12 21 15 45 21 29 26 21 11 11 21 34 1 21 19 10 21 26 0 -0.93 - 27 0 0 21 44 32 18 19 42.6 45 178 11 21 37 40 21 51 24 21 33 6 21 56 0 21 41 6 21 47 58 -0.93 - 26 0 0 22 7 4 18 19 46.7 45 179 10 22 0 11 22 13 58 21 55 35 22 18 36 22 3 38 22 10 31 -0.93 - 25 0 0 22 30 12 18 19 50.8 45 180 9 22 23 18 22 37 8 22 18 41 22 41 47 22 26 45 22 33 40 -0.93 - 24 0 0 22 53 56 18 19 54.9 44 182 8 22 46 59 23 0 53 22 42 21 23 5 33 22 50 28 22 57 24 -0.93 - 23 0 0 23 18 13 18 19 59.0 44 183 7 23 11 15 23 25 12 23 6 36 23 29 53 23 14 44 23 21 42 -0.93 - 22 0 0 23 43 5 18 20 3.0 43 184 6 23 36 5 23 50 6 23 31 25 23 54 48 23 39 35 23 46 35 -0.93 - 21 0 0 24 8 30 18 20 7.0 43 185 5 24 1 28 24 15 33 23 56 47 24 20 16 24 5 0 24 12 1 -0.93 - 20 0 0 24 34 28 18 20 11.0 42 187 4 24 27 25 24 41 33 24 22 42 24 46 17 24 30 57 24 38 0 -0.93 - 19 0 0 25 0 59 18 20 14.9 42 188 3 24 53 54 25 8 5 24 49 10 25 12 51 24 57 27 25 4 32 -0.93 - 18 0 0 25 28 2 18 20 18.8 41 189 2 25 20 54 25 35 10 25 16 9 25 39 57 25 24 28 25 31 35 -0.93 - 17 0 0 25 55 35 18 20 22.7 41 190 1 25 48 26 26 2 45 25 43 39 26 7 34 25 52 1 25 59 10 -0.93 - 16 0 0 26 23 39 18 20 26.5 40 191 0 26 16 28 26 30 51 26 11 40 26 35 41 26 20 4 26 27 15 -0.93 - 15 0 0 26 52 13 18 20 30.2 39 192 -1 26 45 0 26 59 27 26 40 11 27 4 18 26 48 37 26 55 49 -0.93 - 14 0 0 27 21 15 18 20 33.9 39 194 -2 27 14 0 27 28 31 27 9 10 27 33 23 27 17 38 27 24 53 -0.93 - 13 0 0 27 50 46 18 20 37.5 38 195 -3 27 43 29 27 58 4 27 38 37 28 2 57 27 47 8 27 54 25 -0.93 - 12 0 0 28 20 44 18 20 41.1 37 196 -4 28 13 25 28 28 4 28 8 32 28 32 59 28 17 5 28 24 24 -0.93 - 11 0 0 28 51 8 18 20 44.7 36 197 -5 28 43 47 28 58 31 28 38 53 29 3 27 28 47 28 28 54 49 -0.93 - 10 0 0 29 21 58 18 20 48.1 36 198 -6 29 14 35 29 29 22 29 9 40 29 34 20 29 18 17 29 25 40 -0.93 - 9 0 0 29 53 13 18 20 51.5 35 199 -7 29 45 48 30 0 39 29 40 51 30 5 38 29 49 30 29 56 55 -0.93 - 8 0 0 30 24 51 18 20 54.8 34 200 -8 30 17 24 30 32 19 30 12 25 30 37 19 30 21 7 30 28 34 -0.93 - 7 0 0 30 56 51 18 20 58.1 33 201 -9 30 49 22 31 4 21 30 44 22 31 9 23 30 53 7 31 0 36 -0.93 - 6 0 0 31 29 13 18 21 1.3 33 201 -10 31 21 42 31 36 45 31 16 41 31 41 48 31 25 28 31 32 59 -0.93 - 5 0 0 32 1 56 18 21 4.4 32 202 -11 31 54 23 32 9 30 31 49 20 32 14 34 31 58 9 32 5 42 -0.93 - 4 0 0 32 34 58 18 21 7.4 31 203 -12 32 27 22 32 42 34 32 22 19 32 47 40 32 31 10 32 38 45 -0.93 - 3 0 0 33 8 17 18 21 10.4 30 204 -13 33 0 40 33 15 56 32 55 35 33 21 3 33 4 29 33 12 6 -0.93 - 2 0 0 33 41 54 18 21 13.2 29 205 -14 33 34 15 33 49 35 33 29 9 33 54 43 33 38 5 33 45 44 -0.93 - 1 0 0 34 15 47 18 21 16.0 28 206 -15 34 8 6 34 23 29 34 2 58 34 28 39 34 11 57 34 19 37 -0.93 0 0 0 34 49 54 18 21 18.7 27 207 -16 34 42 11 34 57 38 34 37 2 35 2 49 34 46 3 34 53 45 -0.93 1 0 0 35 24 14 18 21 21.3 27 208 -17 35 16 29 35 32 0 35 11 19 35 37 13 35 20 22 35 28 7 -0.93 2 0 0 35 58 46 18 21 23.9 26 208 -18 35 50 59 36 6 34 35 45 48 36 11 48 35 54 53 36 2 40 -0.93 3 0 0 36 33 29 18 21 26.3 25 209 -18 36 25 40 36 41 19 36 20 27 36 46 34 36 29 35 36 37 23 -0.93 4 0 0 37 8 21 18 21 28.7 24 210 -19 37 0 30 37 16 13 36 55 16 37 21 29 37 4 26 37 12 16 -0.93 5 0 0 37 43 20 18 21 30.9 23 211 -20 37 35 28 37 51 14 37 30 13 37 56 31 37 39 25 37 47 17 -0.93 6 0 0 38 18 27 18 21 33.1 22 211 -21 38 10 32 38 26 22 38 5 16 38 31 40 38 14 30 38 22 24 -0.93 7 0 0 38 53 38 18 21 35.1 21 212 -22 38 45 42 39 1 35 38 40 25 39 6 54 38 49 40 38 57 36 -0.93 8 0 0 39 28 53 18 21 37.1 20 213 -23 39 20 55 39 36 51 39 15 37 39 42 12 39 24 54 39 32 51 -0.93 9 0 0 40 4 10 18 21 39.0 19 214 -23 39 56 11 40 12 10 39 50 51 40 17 32 40 0 10 40 8 9 -0.93 10 0 0 40 39 28 18 21 40.8 18 215 -24 40 31 27 40 47 29 40 26 7 40 52 52 40 35 28 40 43 28 -0.94 11 0 0 41 14 45 18 21 42.5 17 215 -25 41 6 43 41 22 48 41 1 22 41 28 12 41 10 44 41 18 46 -0.94 12 0 0 41 50 0 18 21 44.1 17 216 -26 41 41 57 41 58 5 41 36 35 42 3 30 41 45 59 41 54 2 -0.94 13 0 0 42 25 12 18 21 45.6 16 217 -26 42 17 8 42 33 19 42 11 44 42 38 44 42 21 10 42 29 15 -0.94 14 0 0 43 0 20 18 21 47.0 15 218 -27 42 52 14 43 8 27 42 46 50 43 13 54 42 56 17 43 4 23 -0.94 15 0 0 43 35 21 18 21 48.3 14 218 -28 43 27 14 43 43 30 43 21 49 43 48 57 43 31 18 43 39 25 -0.94 16 0 0 44 10 15 18 21 49.5 13 219 -28 44 2 7 44 18 24 43 56 41 44 23 52 44 6 11 44 14 19 -0.94 17 0 0 44 44 59 18 21 50.7 12 220 -29 44 36 50 44 53 10 44 31 24 44 58 39 44 40 55 44 49 4 -0.94 18 0 0 45 19 34 18 21 51.7 11 221 -29 45 11 24 45 27 46 45 5 57 45 33 15 45 15 29 45 23 39 -0.94 19 0 0 45 53 57 18 21 52.7 10 221 -30 45 45 46 46 2 10 45 40 19 46 7 40 45 49 52 45 58 3 -0.94 20 0 0 46 28 8 18 21 53.5 9 222 -31 46 19 56 46 36 21 46 14 28 46 41 51 46 24 2 46 32 14 -0.94 21 0 0 47 2 4 18 21 54.3 8 223 -31 46 53 52 47 10 18 46 48 24 47 15 49 46 57 58 47 6 11 -0.94 22 0 0 47 35 46 18 21 55.0 8 224 -32 47 27 33 47 44 0 47 22 4 47 49 31 47 31 39 47 39 52 -0.95 23 0 0 48 9 11 18 21 55.6 7 224 -32 48 0 57 48 17 26 47 55 28 48 22 57 48 5 4 48 13 18 -0.95 24 0 0 48 42 18 18 21 56.2 6 225 -33 48 34 5 48 50 34 48 28 35 48 56 6 48 38 12 48 46 25 -0.95 25 0 0 49 15 8 18 21 56.6 5 226 -33 49 6 54 49 23 23 49 1 24 49 28 55 49 11 1 49 19 15 -0.96 26 0 0 49 47 37 18 21 57.0 4 227 -34 49 39 23 49 55 53 49 33 53 50 1 25 49 43 30 49 51 44 -0.96 27 0 0 50 19 46 18 21 57.3 3 227 -34 50 11 32 50 28 2 50 6 2 50 33 34 50 15 39 50 23 53 -0.97 28 0 0 50 51 34 18 21 57.5 2 228 -34 50 43 20 50 59 50 50 37 50 51 5 22 50 47 27 50 55 41 -0.98 29 0 0 51 23 0 18 21 57.7 2 229 -35 51 14 46 51 31 15 51 9 16 51 36 47 51 18 53 51 27 7 -1.01 30 0 0 51 54 2 18 21 57.8 1 230 -35 51 45 48 52 2 17 51 40 19 52 7 49 51 49 55 51 58 9 -1.08 31 0 0 52 24 40 18 21 57.8 0 230 -36 52 16 27 .. .. .. 52 10 58 .. .. .. 52 20 34 52 28 47 -3.19 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: UCAC4 336-189531 * constellation : Sagittarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 19 19 34.5536 DE: -22 59 17.281 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 19 19 34.5536 DE: -22 59 17.281 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.500,0.400) * V mag [mag]: 10.4 * B mag [mag]: 12.9 * Diameter [mas]: 1.90 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (3816) Chugainov asteroid class: approx. diameter [km]: 13 approx. diameter ["]: 0.006 distance from Earth [AU]: 3.09890 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#52 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): 0.009", 0.003", 74.539° remarks: * orbital elements for (3816)Chugainov : Mean anomaly = 153.6497774006 deg Arg. of pericenter = 196.6661778541 deg Long. of node = 310.8914745695 deg Inclination = 12.1808748175 deg Eccentricity = 0.1269091111 Semimajor axis = 2.6056262492 AU Perihelion dist = 2.2749485381 AU Mag: H = 11.90, G = 0.15 Epoch of elements : MJD 60614.76322304 TDT (2024 Oct 31.7632) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#522023Apr24,0.65,2024,10,31,18.317357,-0.189385,0.654856,14.387440,4.149662,0.005491,0.000736,0.000000,0.000000 -25.0369,-22.9436,-98.86,-14.44,False UCAC4 336-189531,19.32626492,-22.9881336,12.93,10.37,8.99,1.9,4,,19.35096196,-22.9435536,7.25,8.18,0,0,0 3816,Chugainov,17.62,17.210,3.0989,0,0,2.956,11.78,,0.8,0 0,153.4709,2024,10,31,196.6662,310.8915,12.1809,0.12691,2.60563,2.27495,11.89,5.0,0.15 1.334,0.0090,0.0026,75,0.0026,Known errors,1.14,0,-1,-1 20241031_189531,60140.67 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 16:07 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org