IOTA/IOTA-ES occultation update for (2483) Guinevere / TYC 5777-00654-1 event on 2023 Aug 12, 06:11 UT Visible from Canada, USA Summary ------- On 2023 Aug 12 UT, the 38 km diameter asteroid (2483) Guinevere will occult a 10.5 mag star in the constellation Aquarius for observers along a path across Canada, USA. In the case of an occultation, the combined light of the asteroid and the star will drop by 6.28 mag to 16.80 mag (the magnitude of the asteroid) for at most 2.420 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 Aug 12, 06:08 - 2023 Aug 12, 06:15 * geocentric midpoint of event [JD]: 2460168.75850388 * magnitude of target star: 10.52 * magnitude drop [mag]: 6.28 * estimated maximum duration [s]: 2.420 * Moon: 15 % sunlit, 133° distance * Sun: 174° distance * rough path description: Canada, USA The occultation path -------------------- * approximate projected width [km]: 74 * 1 sigma uncertainty interval [path widths]: +/- 0.06 * 1 sigma uncertainty interval [seconds]: +/- 2.1 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.013, +/- 0.005) * 1 sigma uncertainty ellipse (major, minor, PA): (0.014", 0.000", 70°) * approx speed of asteroid's shadow [km/s]: 15.6840 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 5777-00654-1 by 2483 Guinevere on 2023 Aug 12 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 -174 0 0 42 11 12 6 15 43.6 1 103 4 42 31 56 41 50 40 42 34 31 41 48 9 .... -173 0 0 42 1 33 6 15 43.4 1 104 3 42 22 14 41 41 5 42 24 49 41 38 33 -1.13 -172 0 0 41 52 23 6 15 43.1 2 105 2 42 13 1 41 31 58 42 15 35 41 29 26 -1.32 -171 0 0 41 43 41 6 15 42.6 3 105 1 42 4 16 41 23 19 42 6 50 41 20 48 -1.42 -170 0 0 41 35 29 6 15 42.0 4 106 1 41 56 1 41 15 8 41 58 35 41 12 38 -1.47 -169 0 0 41 27 45 6 15 41.3 4 107 0 41 48 14 41 7 27 41 50 48 41 4 57 -1.51 -168 0 0 41 20 30 6 15 40.4 5 107 -1 41 40 57 41 0 14 41 43 30 40 57 45 -1.53 -167 0 0 41 13 44 6 15 39.4 6 108 -1 41 34 9 40 53 31 41 36 42 40 51 1 -1.55 -166 0 0 41 7 27 6 15 38.3 7 109 -2 41 27 50 40 47 16 41 30 23 40 44 47 -1.57 -165 0 0 41 1 40 6 15 37.0 7 109 -3 41 22 1 40 41 30 41 24 33 40 39 1 -1.58 -164 0 0 40 56 21 6 15 35.6 8 110 -4 41 16 41 40 36 14 41 19 13 40 33 45 -1.59 -163 0 0 40 51 33 6 15 34.1 9 111 -4 41 11 50 40 31 27 41 14 22 40 28 58 -1.60 -162 0 0 40 47 13 6 15 32.4 10 111 -5 41 7 30 40 27 9 41 10 1 40 24 40 -1.60 -161 0 0 40 43 23 6 15 30.6 10 112 -6 41 3 38 40 23 20 41 6 10 40 20 52 -1.61 -160 0 0 40 40 3 6 15 28.7 11 113 -7 41 0 17 40 20 1 41 2 48 40 17 33 -1.61 -159 0 0 40 37 12 6 15 26.6 12 114 -7 40 57 24 40 17 11 40 59 56 40 14 43 -1.62 -158 0 0 40 34 50 6 15 24.4 12 114 -8 40 55 2 40 14 50 40 57 33 40 12 22 -1.62 -157 0 0 40 32 58 6 15 22.1 13 115 -9 40 53 9 40 12 59 40 55 40 40 10 31 -1.62 -156 0 0 40 31 36 6 15 19.7 14 116 -9 40 51 46 40 11 37 40 54 17 40 9 9 -1.63 -155 0 0 40 30 43 6 15 17.1 15 116 -10 40 50 52 40 10 44 40 53 23 40 8 17 -1.63 -154 0 0 40 30 19 6 15 14.5 15 117 -11 40 50 28 40 10 21 40 52 59 40 7 53 -1.63 -153 0 0 40 30 25 6 15 11.7 16 118 -11 40 50 34 40 10 27 40 53 5 40 7 59 -1.63 -152 0 0 40 31 0 6 15 8.8 17 119 -12 40 51 9 40 11 2 40 53 40 40 8 34 -1.63 -151 0 0 40 32 4 6 15 5.8 17 119 -12 40 52 13 40 12 6 40 54 44 40 9 39 -1.64 -150 0 0 40 33 37 6 15 2.6 18 120 -13 40 53 47 40 13 40 40 56 18 40 11 12 -1.64 -149 0 0 40 35 40 6 14 59.4 18 121 -14 40 55 50 40 15 42 40 58 21 40 13 14 -1.64 -148 0 0 40 38 12 6 14 56.1 19 122 -14 40 58 22 40 18 13 41 0 53 40 15 45 -1.64 -147 0 0 40 41 13 6 14 52.6 20 122 -15 41 1 24 40 21 13 41 3 55 40 18 45 -1.64 -146 0 0 40 44 42 6 14 49.1 20 123 -15 41 4 54 40 24 42 41 7 25 40 22 14 -1.64 -145 0 0 40 48 41 6 14 45.4 21 124 -16 41 8 54 40 28 40 41 11 25 40 26 12 -1.64 -144 0 0 40 53 8 6 14 41.7 21 125 -17 41 13 22 40 33 6 41 15 53 40 30 37 -1.65 -143 0 0 40 58 4 6 14 37.9 22 126 -17 41 18 19 40 38 0 41 20 51 40 35 32 -1.65 -142 0 0 41 3 28 6 14 34.0 23 127 -18 41 23 45 40 43 23 41 26 16 40 40 54 -1.65 -141 0 0 41 9 20 6 14 30.0 23 127 -18 41 29 39 40 49 14 41 32 11 40 46 45 -1.65 -140 0 0 41 15 41 6 14 25.9 24 128 -19 41 36 1 40 55 33 41 38 33 40 53 4 -1.65 -139 0 0 41 22 30 6 14 21.7 24 129 -19 41 42 52 41 2 20 41 45 24 40 59 51 -1.65 -138 0 0 41 29 46 6 14 17.4 25 130 -20 41 50 10 41 9 35 41 52 43 41 7 5 -1.65 -137 0 0 41 37 30 6 14 13.1 25 131 -20 41 57 57 41 17 17 42 0 29 41 14 47 -1.65 -136 0 0 41 45 42 6 14 8.7 26 132 -20 42 6 11 41 25 26 42 8 44 41 22 56 -1.65 -135 0 0 41 54 21 6 14 4.2 26 133 -21 42 14 52 41 34 3 42 17 25 41 31 33 -1.65 -134 0 0 42 3 28 6 13 59.7 26 134 -21 42 24 1 41 43 7 42 26 35 41 40 36 -1.65 -133 0 0 42 13 1 6 13 55.0 27 135 -22 42 33 37 41 52 37 42 36 11 41 50 7 -1.65 -132 0 0 42 23 1 6 13 50.4 27 136 -22 42 43 39 42 2 35 42 46 14 42 0 3 -1.66 -131 0 0 42 33 27 6 13 45.6 28 137 -22 42 54 9 42 12 58 42 56 43 42 10 27 -1.66 -130 0 0 42 44 20 6 13 40.9 28 138 -23 43 5 4 42 23 48 43 7 40 42 21 16 -1.66 -129 0 0 42 55 38 6 13 36.0 28 139 -23 43 16 26 42 35 3 43 19 2 42 32 31 -1.66 -128 0 0 43 7 23 6 13 31.1 29 140 -23 43 28 14 42 46 44 43 30 50 42 44 12 -1.66 -127 0 0 43 19 33 6 13 26.2 29 141 -24 43 40 28 42 58 51 43 43 4 42 56 18 -1.66 -126 0 0 43 32 8 6 13 21.2 29 142 -24 43 53 6 43 11 23 43 55 43 43 8 49 -1.66 -125 0 0 43 45 8 6 13 16.2 29 143 -24 44 6 10 43 24 19 44 8 48 43 21 45 -1.66 -124 0 0 43 58 33 6 13 11.1 30 144 -24 44 19 39 43 37 40 44 22 17 43 35 6 -1.66 -123 0 0 44 12 22 6 13 6.1 30 145 -24 44 33 32 43 51 25 44 36 10 43 48 50 -1.66 -122 0 0 44 26 35 6 13 1.0 30 146 -25 44 47 49 44 5 34 44 50 28 44 2 59 -1.66 -121 0 0 44 41 11 6 12 55.8 30 147 -25 45 2 30 44 20 7 45 5 10 44 17 31 -1.66 -120 0 0 44 56 12 6 12 50.7 30 149 -25 45 17 35 44 35 3 45 20 15 44 32 26 -1.67 -119 0 0 45 11 35 6 12 45.5 31 150 -25 45 33 2 44 50 21 45 35 43 44 47 44 -1.67 -118 0 0 45 27 20 6 12 40.3 31 151 -25 45 48 53 45 6 2 45 51 34 45 3 25 -1.67 -117 0 0 45 43 28 6 12 35.1 31 152 -25 46 5 5 45 22 6 46 7 47 45 19 28 -1.67 -116 0 0 45 59 58 6 12 29.9 31 153 -25 46 21 40 45 38 31 46 24 22 45 35 52 -1.67 -115 0 0 46 16 49 6 12 24.7 31 154 -25 46 38 36 45 55 17 46 41 19 45 52 38 -1.67 -114 0 0 46 34 1 6 12 19.5 31 155 -25 46 55 53 46 12 24 46 58 37 46 9 44 -1.67 -113 0 0 46 51 33 6 12 14.3 31 156 -25 47 13 31 46 29 51 47 16 15 46 27 11 -1.67 -112 0 0 47 9 26 6 12 9.1 31 158 -25 47 31 29 46 47 39 47 34 14 46 44 58 -1.67 -111 0 0 47 27 38 6 12 3.9 31 159 -25 47 49 46 47 5 46 47 52 32 47 3 4 -1.67 -110 0 0 47 46 10 6 11 58.8 31 160 -25 48 8 23 47 24 12 48 11 10 47 21 29 -1.67 -109 0 0 48 4 59 6 11 53.6 31 161 -25 48 27 19 47 42 56 48 30 6 47 40 13 -1.68 -108 0 0 48 24 7 6 11 48.5 31 162 -25 48 46 32 48 1 59 48 49 20 47 59 15 -1.68 -107 0 0 48 43 33 6 11 43.4 30 163 -25 49 6 4 48 21 19 49 8 52 48 18 34 -1.68 -106 0 0 49 3 15 6 11 38.3 30 165 -25 49 25 52 48 40 55 49 28 41 48 38 10 -1.68 -105 0 0 49 23 14 6 11 33.3 30 166 -25 49 45 57 49 0 48 49 48 47 48 58 3 -1.68 -104 0 0 49 43 29 6 11 28.3 30 167 -24 50 6 17 49 20 57 50 9 8 49 18 11 -1.68 -103 0 0 50 3 59 6 11 23.4 30 168 -24 50 26 53 49 41 21 50 29 45 49 38 34 -1.68 -102 0 0 50 24 43 6 11 18.5 30 169 -24 50 47 44 50 2 0 50 50 36 49 59 12 -1.68 -101 0 0 50 45 42 6 11 13.6 29 170 -24 51 8 49 50 22 52 51 11 42 50 20 4 -1.68 -100 0 0 51 6 54 6 11 8.8 29 171 -24 51 30 7 50 43 58 51 33 1 50 41 9 -1.68 - 99 0 0 51 28 18 6 11 4.0 29 173 -23 51 51 37 51 5 17 51 54 32 51 2 27 -1.69 - 98 0 0 51 49 54 6 10 59.3 29 174 -23 52 13 20 51 26 47 52 16 16 51 23 57 -1.69 - 97 0 0 52 11 42 6 10 54.7 28 175 -23 52 35 14 51 48 29 52 38 10 51 45 38 -1.69 - 96 0 0 52 33 40 6 10 50.1 28 176 -22 52 57 19 52 10 21 53 0 16 52 7 29 -1.69 - 95 0 0 52 55 49 6 10 45.6 28 177 -22 53 19 33 52 32 23 53 22 31 52 29 30 -1.69 - 94 0 0 53 18 6 6 10 41.2 27 178 -22 53 41 57 52 54 35 53 44 56 52 51 41 -1.69 - 93 0 0 53 40 32 6 10 36.8 27 179 -21 54 4 29 53 16 54 54 7 28 53 14 0 -1.69 - 92 0 0 54 3 5 6 10 32.5 27 180 -21 54 27 8 53 39 22 54 30 9 53 36 26 -1.69 - 91 0 0 54 25 45 6 10 28.3 26 181 -21 54 49 55 54 1 56 54 52 56 53 59 0 -1.69 - 90 0 0 54 48 31 6 10 24.1 26 182 -20 55 12 47 54 24 36 55 15 49 54 21 40 -1.69 - 89 0 0 55 11 23 6 10 20.1 25 184 -20 55 35 45 54 47 22 55 38 47 54 44 25 -1.69 - 88 0 0 55 34 19 6 10 16.1 25 185 -19 55 58 47 55 10 12 56 1 50 55 7 14 -1.69 - 87 0 0 55 57 19 6 10 12.2 24 186 -19 56 21 52 55 33 6 56 24 57 55 30 8 -1.70 - 86 0 0 56 20 21 6 10 8.4 24 187 -19 56 45 1 55 56 3 56 48 6 55 53 4 -1.70 - 85 0 0 56 43 26 6 10 4.7 24 188 -18 57 8 11 56 19 2 57 11 17 56 16 2 -1.70 - 84 0 0 57 6 32 6 10 1.0 23 189 -18 57 31 22 56 42 3 57 34 29 56 39 2 -1.70 - 83 0 0 57 29 38 6 9 57.5 23 190 -17 57 54 34 57 5 4 57 57 41 57 2 2 -1.70 - 82 0 0 57 52 44 6 9 54.1 22 191 -17 58 17 45 57 28 4 58 20 53 57 25 3 -1.70 - 81 0 0 58 15 48 6 9 50.7 22 192 -16 58 40 55 57 51 4 58 44 3 57 48 1 -1.70 - 80 0 0 58 38 51 6 9 47.5 21 193 -16 59 4 2 58 14 2 59 7 12 58 10 59 -1.70 - 79 0 0 59 1 50 6 9 44.3 21 194 -15 59 27 7 58 36 57 59 30 17 58 33 53 -1.70 - 78 0 0 59 24 46 6 9 41.2 20 195 -15 59 50 7 58 59 48 59 53 18 58 56 44 -1.70 - 77 0 0 59 47 38 6 9 38.3 20 196 -14 60 13 3 59 22 35 60 16 14 59 19 31 -1.70 - 76 0 0 60 10 24 6 9 35.4 19 197 -14 60 35 54 59 45 18 60 39 5 59 42 12 -1.70 - 75 0 0 60 33 4 6 9 32.6 19 198 -13 60 58 38 60 7 54 61 1 49 60 4 48 -1.70 - 74 0 0 60 55 37 6 9 29.9 18 199 -13 61 21 15 60 30 24 61 24 27 60 27 18 -1.70 - 73 0 0 61 18 3 6 9 27.3 18 200 -12 61 43 44 60 52 46 61 46 57 60 49 40 -1.70 - 72 0 0 61 40 21 6 9 24.8 17 201 -12 62 6 5 61 15 1 62 9 18 61 11 54 -1.70 - 71 0 0 62 2 29 6 9 22.4 17 202 -11 62 28 16 61 37 6 62 31 30 61 33 59 -1.70 - 70 0 0 62 24 28 6 9 20.1 16 203 -11 62 50 17 61 59 2 62 53 31 61 55 55 -1.71 - 69 0 0 62 46 16 6 9 17.9 16 204 -10 63 12 8 62 20 48 63 15 22 62 17 40 -1.71 - 68 0 0 63 7 53 6 9 15.8 15 205 -10 63 33 47 62 42 23 63 37 1 62 39 15 -1.71 - 67 0 0 63 29 18 6 9 13.8 15 206 -9 63 55 14 63 3 47 63 58 28 63 0 38 -1.71 - 66 0 0 63 50 31 6 9 11.9 14 207 -9 64 16 28 63 24 58 64 19 43 63 21 50 -1.71 - 65 0 0 64 11 31 6 9 10.0 14 207 -8 64 37 30 63 45 57 64 40 45 63 42 48 -1.71 - 64 0 0 64 32 17 6 9 8.3 13 208 -8 64 58 17 64 6 43 65 1 32 64 3 34 -1.71 - 63 0 0 64 52 49 6 9 6.6 13 209 -7 65 18 50 64 27 14 65 22 5 64 24 6 -1.71 - 62 0 0 65 13 7 6 9 5.0 12 210 -7 65 39 8 64 47 32 65 42 23 64 44 23 -1.71 - 61 0 0 65 33 10 6 9 3.5 12 211 -6 65 59 10 65 7 34 66 2 25 65 4 26 -1.71 - 60 0 0 65 52 57 6 9 2.1 11 212 -6 66 18 57 65 27 22 66 22 12 65 24 13 -1.71 - 59 0 0 66 12 28 6 9 0.7 11 213 -5 66 38 27 65 46 53 66 41 42 65 43 45 -1.71 - 58 0 0 66 31 43 6 8 59.4 10 214 -5 66 57 41 66 6 9 67 0 56 66 3 1 -1.71 - 57 0 0 66 50 41 6 8 58.3 10 215 -4 67 16 38 66 25 9 67 19 53 66 22 1 -1.71 - 56 0 0 67 9 22 6 8 57.1 9 216 -4 67 35 17 66 43 52 67 38 32 66 40 44 -1.71 - 55 0 0 67 27 46 6 8 56.1 9 217 -4 67 53 39 67 2 18 67 56 54 66 59 10 -1.71 - 54 0 0 67 45 53 6 8 55.1 8 218 -3 68 11 44 67 20 26 68 14 58 67 17 18 -1.71 - 53 0 0 68 3 41 6 8 54.2 8 219 -3 68 29 30 67 38 17 68 32 43 67 35 10 -1.71 - 52 0 0 68 21 12 6 8 53.3 7 220 -2 68 46 57 67 55 50 68 50 11 67 52 43 -1.71 - 51 0 0 68 38 24 6 8 52.6 7 221 -2 69 4 6 68 13 5 69 7 19 68 9 59 -1.71 - 50 0 0 68 55 18 6 8 51.8 6 222 -1 69 20 57 68 30 3 69 24 9 68 26 56 -1.72 - 49 0 0 69 11 53 6 8 51.2 6 223 -1 69 37 28 68 46 41 69 40 41 68 43 36 -1.72 - 48 0 0 69 28 10 6 8 50.6 5 223 0 69 53 41 69 3 2 69 56 53 68 59 57 -1.72 - 47 0 0 69 44 8 6 8 50.0 5 224 0 70 9 35 69 19 4 70 12 46 69 15 59 -1.72 - 46 0 0 69 59 48 6 8 49.5 5 225 0 70 25 11 69 34 48 70 28 21 69 31 43 -1.72 - 45 0 0 70 15 8 6 8 49.1 4 226 1 70 40 27 69 50 13 70 43 37 69 47 9 -1.72 - 44 0 0 70 30 11 6 8 48.7 4 227 1 70 55 24 70 5 20 70 58 34 70 2 16 -1.73 - 43 0 0 70 44 54 6 8 48.3 3 228 2 71 10 3 70 20 8 71 13 12 70 17 5 -1.73 - 42 0 0 70 59 19 6 8 48.0 3 229 2 71 24 23 70 34 38 71 27 31 70 31 36 -1.73 - 40 59 59 71 13 26 6 8 47.8 3 230 3 71 38 24 70 48 50 71 41 31 70 45 48 -1.74 - 39 59 59 71 27 14 6 8 47.6 2 231 3 71 52 7 71 2 43 71 55 13 70 59 42 -1.75 - 38 59 59 71 40 43 6 8 47.4 2 232 3 72 5 31 71 16 18 72 8 37 71 13 18 -1.76 - 37 59 59 71 53 55 6 8 47.2 1 233 4 72 18 36 71 29 35 72 21 42 71 26 35 -1.77 - 36 59 59 72 6 49 6 8 47.1 1 234 4 72 31 24 71 42 34 72 34 28 71 39 35 -1.81 - 35 59 59 72 19 24 6 8 47.1 1 235 4 72 43 54 71 55 15 72 46 57 71 52 17 -1.87 - 34 59 59 72 31 42 6 8 47.0 0 236 5 72 56 6 72 7 39 72 59 8 72 4 42 -2.09 - 34 0 0 .. .. .... .. .. .. .. .. .. .. .. .. 72 19 45 .. .. .. 72 16 49 .... Uncertainty in time = +/- 2 secs Prediction of 2023 Aug 6.7 Data for the target star ------------------------ * name: TYC 5777-00654-1 * constellation : Aquarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 21 21 49.2072 DE: -09 39 05.821 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 21 21 49.2072 DE: -09 39 05.820 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 10.5 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (2483) Guinevere asteroid class: approx. diameter [km]: 38 approx. diameter ["]: 0.017 distance from Earth [AU]: 3.14620 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#44 date of fit: 2023 Jul 30 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): 0.014", 0.000", 69.924° remarks: * orbital elements for (2483)Guinevere : Mean anomaly = 275.7086854653 deg Arg. of pericenter = 183.0633228041 deg Long. of node = 252.0441920373 deg Inclination = 4.5018551079 deg Eccentricity = 0.2774789596 Semimajor axis = 3.9658989157 AU Perihelion dist = 2.8654454108 AU Mag: H = 11.03, G = 0.15 Epoch of elements : MJD 60168.25826389 TDT (2023 Aug 12.2583) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#442023Jul30,2.42,2023,8,12,6.204093,-0.238384,0.822333,-8.502476,-2.464590,0.000074,-0.000563,0.000001,0.000000 -92.7296,-9.5503,88.23,15.03,False TYC 5777-00654-1,21.36366868,-9.6516169,0.00,10.52,0.00,0.0,0,,21.38503719,-9.5502808,6.28,0.00,0,0,0 2483,Guinevere,16.80,38.000,3.1462,0,0,-1.606,-6.89,,3.0,0 0,275.6765,2023,8,12,183.0633,252.0442,4.5019,0.27748,3.96590,2.86545,11.03,5.0,0.15 1.062,0.0143,0.0003,70,0.0143,Known errors,-1.00,0,-1,-1 20230812_0654-1,60162.67 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Aug 06, 16:01 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org