IOTA/IOTA-ES occultation update for (1757) Porvoo / TYC 1866-01936-1 event on 2024 Sep 21, 19:56 UT Visible from Summary ------- On 2024 Sep 21 UT, the 12.732 km diameter asteroid (1757) Porvoo will occult a 11.9 mag star in the constellation Taurus for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 6.47 mag to 18.36 mag (the magnitude of the asteroid) for at most 0.800 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: 97 * date and approx. time of event: 2024 Sep 21, 19:49 - 2024 Sep 21, 20:02 * geocentric midpoint of event [JD]: 2460575.33072662 * magnitude of target star: 11.89 * magnitude drop [mag]: 6.47 * estimated maximum duration [s]: 0.800 * Moon: 80 % sunlit, 35° distance * Sun: 92° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 13 * 1 sigma uncertainty interval [path widths]: +/- 0.40 * 1 sigma uncertainty interval [seconds]: +/- 1.3 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.013, +/- 0.003) * 1 sigma uncertainty ellipse (major, minor, PA): (0.013", 0.003", 86°) * approx speed of asteroid's shadow [km/s]: 16.0138 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 1866-01936-1 by 1757 Porvoo on 2024 Sep 21 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 65 0 0 -13 23 8 19 49 39.6 0 64 -76 -13 27 0 -13 19 16 -13 30 4 -13 16 12 .... 66 0 0 -12 54 25 19 49 39.7 1 64 -76 -12 58 17 -12 50 33 -13 1 22 -12 47 29 -0.06 67 0 0 -12 25 31 19 49 40.0 2 64 -76 -12 29 23 -12 21 39 -12 32 28 -12 18 34 0.02 68 0 0 -11 56 27 19 49 40.3 3 63 -76 -12 0 19 -11 52 34 -12 3 24 -11 49 30 0.05 69 0 0 -11 27 13 19 49 40.9 5 63 -76 -11 31 5 -11 23 20 -11 34 10 -11 20 15 0.06 70 0 0 -10 57 49 19 49 41.5 6 63 -76 -11 1 42 -10 53 56 -11 4 47 -10 50 52 0.07 71 0 0 -10 28 18 19 49 42.4 7 63 -76 -10 32 11 -10 24 25 -10 35 16 -10 21 20 0.08 72 0 0 - 9 58 39 19 49 43.3 8 63 -75 -10 2 32 - 9 54 46 -10 5 37 - 9 51 40 0.08 73 0 0 - 9 28 53 19 49 44.5 9 62 -75 - 9 32 46 - 9 25 0 - 9 35 51 - 9 21 54 0.09 74 0 0 - 8 59 1 19 49 45.7 10 62 -74 - 9 2 54 - 8 55 8 - 9 5 59 - 8 52 2 0.09 75 0 0 - 8 29 4 19 49 47.2 11 62 -74 - 8 32 57 - 8 25 10 - 8 36 2 - 8 22 5 0.09 76 0 0 - 7 59 2 19 49 48.7 12 62 -73 - 8 2 56 - 7 55 9 - 8 6 1 - 7 52 4 0.09 77 0 0 - 7 28 57 19 49 50.5 13 62 -72 - 7 32 51 - 7 25 4 - 7 35 56 - 7 21 59 0.09 78 0 0 - 6 58 50 19 49 52.3 14 62 -72 - 7 2 43 - 6 54 56 - 7 5 48 - 6 51 51 0.10 79 0 0 - 6 28 40 19 49 54.4 16 62 -71 - 6 32 33 - 6 24 47 - 6 35 39 - 6 21 41 0.10 80 0 0 - 5 58 30 19 49 56.6 17 61 -70 - 6 2 23 - 5 54 36 - 6 5 28 - 5 51 31 0.10 81 0 0 - 5 28 19 19 49 58.9 18 61 -69 - 5 32 12 - 5 24 25 - 5 35 17 - 5 21 20 0.10 82 0 0 - 4 58 9 19 50 1.4 19 61 -68 - 5 2 2 - 4 54 15 - 5 5 7 - 4 51 10 0.10 83 0 0 - 4 28 0 19 50 4.0 20 61 -67 - 4 31 53 - 4 24 7 - 4 34 59 - 4 21 2 0.10 84 0 0 - 3 57 54 19 50 6.8 21 61 -66 - 4 1 47 - 3 54 1 - 4 4 52 - 3 50 56 0.10 85 0 0 - 3 27 51 19 50 9.7 22 61 -65 - 3 31 44 - 3 23 58 - 3 34 49 - 3 20 53 0.10 86 0 0 - 2 57 52 19 50 12.8 23 61 -65 - 3 1 45 - 2 53 59 - 3 4 50 - 2 50 55 0.10 87 0 0 - 2 27 58 19 50 16.0 25 61 -64 - 2 31 51 - 2 24 6 - 2 34 56 - 2 21 1 0.10 88 0 0 - 1 58 10 19 50 19.3 26 61 -63 - 2 2 3 - 1 54 18 - 2 5 8 - 1 51 13 0.10 89 0 0 - 1 28 29 19 50 22.8 27 61 -62 - 1 32 21 - 1 24 37 - 1 35 26 - 1 21 32 0.10 90 0 0 - 0 58 55 19 50 26.5 28 61 -61 - 1 2 47 - 0 55 3 - 1 5 52 - 0 51 59 0.10 91 0 0 - 0 29 29 19 50 30.2 29 61 -60 - 0 33 21 - 0 25 38 - 0 36 26 - 0 22 33 0.10 92 0 0 - 0 0 13 19 50 34.1 30 60 -59 - 0 4 5 0 3 39 - 0 7 9 0 6 43 0.11 93 0 0 0 28 54 19 50 38.1 31 60 -58 0 25 2 0 32 45 0 21 58 0 35 49 0.11 94 0 0 0 57 49 19 50 42.3 32 60 -57 0 53 58 1 1 40 0 50 55 1 4 44 0.11 95 0 0 1 26 34 19 50 46.6 34 60 -55 1 22 43 1 30 24 1 19 39 1 33 28 0.11 96 0 0 1 55 6 19 50 51.0 35 60 -54 1 51 15 1 58 56 1 48 12 2 1 59 0.11 97 0 0 2 23 25 19 50 55.5 36 60 -53 2 19 34 2 27 15 2 16 31 2 30 18 0.11 98 0 0 2 51 30 19 51 0.2 37 60 -52 2 47 40 2 55 20 2 44 37 2 58 22 0.11 99 0 0 3 19 20 19 51 4.9 38 60 -51 3 15 31 3 23 10 3 12 29 3 26 12 0.11 100 0 0 3 46 56 19 51 9.8 39 60 -50 3 43 7 3 50 45 3 40 5 3 53 47 0.11 101 0 0 4 14 16 19 51 14.8 40 60 -49 4 10 27 4 18 4 4 7 25 4 21 6 0.11 102 0 0 4 41 19 19 51 19.9 41 60 -48 4 37 30 4 45 7 4 34 29 4 48 9 0.11 103 0 0 5 8 5 19 51 25.1 42 60 -47 5 4 16 5 11 53 5 1 15 5 14 54 0.11 104 0 0 5 34 33 19 51 30.4 44 60 -46 5 30 45 5 38 20 5 27 44 5 41 21 0.11 105 0 0 6 0 42 19 51 35.8 45 60 -45 5 56 55 6 4 29 5 53 54 6 7 30 0.11 106 0 0 6 26 33 19 51 41.3 46 60 -44 6 22 46 6 30 20 6 19 46 6 33 20 0.11 107 0 0 6 52 4 19 51 46.8 47 60 -43 6 48 17 6 55 50 6 45 17 6 58 50 0.11 108 0 0 7 17 15 19 51 52.5 48 60 -42 7 13 29 7 21 1 7 10 29 7 24 0 0.11 109 0 0 7 42 5 19 51 58.2 49 60 -41 7 38 19 7 45 51 7 35 20 7 48 50 0.11 110 0 0 8 6 34 19 52 4.1 50 60 -40 8 2 49 8 10 19 7 59 50 8 13 18 0.11 111 0 0 8 30 42 19 52 10.0 51 60 -39 8 26 57 8 34 26 8 23 58 8 37 25 0.11 112 0 0 8 54 27 19 52 16.0 52 60 -38 8 50 43 8 58 11 8 47 45 9 1 10 0.11 113 0 0 9 17 50 19 52 22.0 53 60 -36 9 14 6 9 21 34 9 11 8 9 24 32 0.11 114 0 0 9 40 50 19 52 28.1 54 60 -35 9 37 7 9 44 33 9 34 9 9 47 31 0.11 115 0 0 10 3 27 19 52 34.3 55 60 -34 9 59 44 10 7 10 9 56 47 10 10 7 0.11 116 0 0 10 25 40 19 52 40.5 57 59 -33 10 21 57 10 29 22 10 19 0 10 32 19 0.12 117 0 0 10 47 28 19 52 46.8 58 59 -32 10 43 46 10 51 10 10 40 50 10 54 7 0.12 118 0 0 11 8 53 19 52 53.2 59 59 -31 11 5 11 11 12 34 11 2 15 11 15 30 0.12 119 0 0 11 29 52 19 52 59.6 60 59 -30 11 26 11 11 33 34 11 23 16 11 36 29 0.12 120 0 0 11 50 27 19 53 6.0 61 59 -29 11 46 46 11 54 8 11 43 51 11 57 3 0.12 121 0 0 12 10 36 19 53 12.5 62 59 -28 12 6 56 12 14 17 12 4 1 12 17 12 0.12 122 0 0 12 30 20 19 53 19.1 63 58 -27 12 26 41 12 34 0 12 23 46 12 36 54 0.12 123 0 0 12 49 38 19 53 25.7 64 58 -26 12 45 59 12 53 17 12 43 5 12 56 12 0.12 124 0 0 13 8 30 19 53 32.3 65 58 -25 13 4 51 13 12 9 13 1 57 13 15 3 0.12 125 0 0 13 26 56 19 53 38.9 66 57 -24 13 23 17 13 30 34 13 20 24 13 33 27 0.12 126 0 0 13 44 55 19 53 45.6 67 57 -23 13 41 17 13 48 33 13 38 24 13 51 26 0.12 127 0 0 14 2 27 19 53 52.3 68 56 -22 13 58 50 14 6 5 13 55 57 14 8 58 0.12 128 0 0 14 19 33 19 53 59.1 69 56 -21 14 15 56 14 23 10 14 13 3 14 26 2 0.12 129 0 0 14 36 12 19 54 5.9 70 55 -20 14 32 35 14 39 48 14 29 43 14 42 40 0.12 130 0 0 14 52 23 19 54 12.7 71 55 -19 14 48 47 14 55 59 14 45 55 14 58 51 0.12 131 0 0 15 8 8 19 54 19.5 72 54 -18 15 4 32 15 11 43 15 1 40 15 14 35 0.12 132 0 0 15 23 24 19 54 26.3 73 53 -17 15 19 49 15 27 0 15 16 58 15 29 51 0.12 133 0 0 15 38 14 19 54 33.1 74 52 -16 15 34 39 15 41 49 15 31 48 15 44 40 0.12 134 0 0 15 52 36 19 54 40.0 74 50 -15 15 49 1 15 56 10 15 46 11 15 59 1 0.12 135 0 0 16 6 30 19 54 46.9 75 49 -14 16 2 56 16 10 4 16 0 5 16 12 54 0.12 136 0 0 16 19 56 19 54 53.7 76 47 -13 16 16 22 16 23 30 16 13 32 16 26 20 0.12 137 0 0 16 32 55 19 55 0.6 77 45 -12 16 29 21 16 36 29 16 26 32 16 39 18 0.12 138 0 0 16 45 26 19 55 7.5 78 43 -11 16 41 53 16 48 59 16 39 3 16 51 48 0.12 139 0 0 16 57 29 19 55 14.4 79 41 -10 16 53 56 17 1 1 16 51 7 17 3 51 0.12 140 0 0 17 9 3 19 55 21.3 79 38 -9 17 5 31 17 12 36 17 2 42 17 15 25 0.12 141 0 0 17 20 10 19 55 28.2 80 34 -8 17 16 38 17 23 42 17 13 49 17 26 31 0.12 142 0 0 17 30 49 19 55 35.1 81 30 -7 17 27 17 17 34 21 17 24 29 17 37 9 0.12 143 0 0 17 41 0 19 55 42.0 81 25 -6 17 37 28 17 44 31 17 34 40 17 47 19 0.12 144 0 0 17 50 42 19 55 48.9 82 19 -5 17 47 11 17 54 13 17 44 23 17 57 1 0.12 145 0 0 17 59 56 19 55 55.7 82 13 -4 17 56 25 18 3 27 17 53 37 18 6 15 0.12 146 0 0 18 8 43 19 56 2.6 83 6 -3 18 5 12 18 12 13 18 2 24 18 15 1 0.12 147 0 0 18 17 1 19 56 9.5 83 359 -2 18 13 30 18 20 31 18 10 43 18 23 18 0.13 148 0 0 18 24 50 19 56 16.3 83 351 -1 18 21 20 18 28 21 18 18 33 18 31 8 0.13 149 0 0 18 32 12 19 56 23.2 83 343 0 18 28 42 18 35 42 18 25 55 18 38 29 0.13 150 0 0 18 39 6 19 56 30.0 83 336 1 18 35 36 18 42 36 18 32 49 18 45 22 0.13 151 0 0 18 45 31 19 56 36.8 82 329 2 18 42 1 18 49 1 18 39 14 18 51 47 0.13 152 0 0 18 51 28 19 56 43.6 82 324 3 18 47 58 18 54 58 18 45 12 18 57 44 0.13 153 0 0 18 56 57 19 56 50.4 81 318 4 18 53 28 19 0 26 18 50 41 19 3 13 0.12 154 0 0 19 1 58 19 56 57.1 81 314 5 18 58 28 19 5 27 18 55 42 19 8 13 0.12 155 0 0 19 6 30 19 57 3.8 80 310 6 19 3 1 19 9 59 19 0 15 19 12 46 0.12 156 0 0 19 10 35 19 57 10.5 79 307 7 19 7 6 19 14 4 19 4 20 19 16 50 0.12 157 0 0 19 14 11 19 57 17.2 78 304 8 19 10 42 19 17 40 19 7 56 19 20 26 0.12 158 0 0 19 17 19 19 57 23.9 78 302 9 19 13 50 19 20 48 19 11 5 19 23 34 0.12 159 0 0 19 19 59 19 57 30.5 77 300 10 19 16 31 19 23 28 19 13 45 19 26 14 0.12 160 0 0 19 22 11 19 57 37.1 76 298 11 19 18 43 19 25 40 19 15 57 19 28 26 0.12 161 0 0 19 23 55 19 57 43.7 75 296 12 19 20 26 19 27 24 19 17 41 19 30 9 0.12 162 0 0 19 25 11 19 57 50.3 74 295 13 19 21 42 19 28 39 19 18 56 19 31 25 0.12 163 0 0 19 25 58 19 57 56.8 73 294 14 19 22 30 19 29 27 19 19 44 19 32 12 0.12 164 0 0 19 26 18 19 58 3.3 73 293 15 19 22 49 19 29 46 19 20 4 19 32 32 0.12 165 0 0 19 26 9 19 58 9.8 72 292 15 19 22 41 19 29 38 19 19 55 19 32 23 0.12 166 0 0 19 25 33 19 58 16.2 71 291 16 19 22 4 19 29 1 19 19 18 19 31 47 0.12 167 0 0 19 24 28 19 58 22.6 70 291 17 19 20 59 19 27 57 19 18 14 19 30 42 0.12 168 0 0 19 22 55 19 58 28.9 69 290 18 19 19 27 19 26 24 19 16 41 19 29 10 0.12 169 0 0 19 20 55 19 58 35.3 68 290 19 19 17 26 19 24 23 19 14 40 19 27 9 0.12 170 0 0 19 18 26 19 58 41.5 67 290 20 19 14 57 19 21 55 19 12 11 19 24 41 0.12 171 0 0 19 15 29 19 58 47.8 66 289 21 19 12 0 19 18 58 19 9 14 19 21 44 0.12 172 0 0 19 12 5 19 58 54.0 65 289 22 19 8 36 19 15 34 19 5 50 19 18 19 0.12 173 0 0 19 8 12 19 59 0.1 64 289 23 19 4 43 19 11 41 19 1 57 19 14 27 0.12 174 0 0 19 3 51 19 59 6.2 63 289 24 19 0 22 19 7 20 18 57 36 19 10 7 0.12 175 0 0 18 59 3 19 59 12.3 62 289 25 18 55 33 19 2 32 18 52 47 19 5 18 0.12 176 0 0 18 53 46 19 59 18.3 61 288 26 18 50 17 18 57 16 18 47 30 19 0 2 0.12 177 0 0 18 48 2 19 59 24.3 61 288 27 18 44 32 18 51 31 18 41 46 18 54 18 0.12 178 0 0 18 41 50 19 59 30.2 60 288 28 18 38 20 18 45 19 18 35 33 18 48 6 0.12 179 0 0 18 35 9 19 59 36.1 59 288 29 18 31 39 18 38 39 18 28 52 18 41 26 0.12 180 0 0 18 28 1 19 59 42.0 58 288 30 18 24 31 18 31 32 18 21 44 18 34 19 0.12 -179 0 0 18 20 26 19 59 47.7 57 288 31 18 16 55 18 23 56 18 14 8 18 26 43 0.12 -178 0 0 18 12 22 19 59 53.4 56 288 32 18 8 51 18 15 53 18 6 4 18 18 40 0.12 -177 0 0 18 3 50 19 59 59.1 55 288 33 18 0 20 18 7 21 17 57 32 18 10 9 0.12 -176 0 0 17 54 51 20 0 4.7 54 289 34 17 51 20 17 58 22 17 48 32 18 1 10 0.12 -175 0 0 17 45 24 20 0 10.3 53 289 35 17 41 53 17 48 56 17 39 5 17 51 44 0.12 -174 0 0 17 35 30 20 0 15.7 52 289 36 17 31 58 17 39 2 17 29 10 17 41 50 0.12 -173 0 0 17 25 8 20 0 21.2 51 289 37 17 21 36 17 28 40 17 18 47 17 31 28 0.12 -172 0 0 17 14 18 20 0 26.5 50 289 38 17 10 46 17 17 50 17 7 57 17 20 39 0.12 -171 0 0 17 3 1 20 0 31.8 49 289 39 16 59 28 17 6 34 16 56 39 17 9 22 0.12 -170 0 0 16 51 16 20 0 37.1 48 289 40 16 47 43 16 54 49 16 44 54 16 57 38 0.12 -169 0 0 16 39 4 20 0 42.2 47 289 41 16 35 31 16 42 37 16 32 41 16 45 27 0.12 -168 0 0 16 26 25 20 0 47.3 46 290 42 16 22 51 16 29 58 16 20 2 16 32 48 0.12 -167 0 0 16 13 18 20 0 52.3 45 290 43 16 9 44 16 16 52 16 6 54 16 19 42 0.12 -166 0 0 15 59 45 20 0 57.3 44 290 44 15 56 10 16 3 19 15 53 20 16 6 9 0.12 -165 0 0 15 45 44 20 1 2.1 43 290 45 15 42 9 15 49 18 15 39 18 15 52 9 0.12 -164 0 0 15 31 16 20 1 6.9 42 290 46 15 27 41 15 34 51 15 24 50 15 37 42 0.12 -163 0 0 15 16 21 20 1 11.6 41 290 47 15 12 46 15 19 57 15 9 55 15 22 48 0.12 -162 0 0 15 1 0 20 1 16.2 40 291 48 14 57 24 15 4 36 14 54 33 15 7 27 0.12 -161 0 0 14 45 12 20 1 20.8 39 291 49 14 41 36 14 48 49 14 38 44 14 51 40 0.12 -160 0 0 14 28 58 20 1 25.2 38 291 50 14 25 21 14 32 35 14 22 29 14 35 27 0.12 -159 0 0 14 12 18 20 1 29.6 37 291 51 14 8 41 14 15 55 14 5 48 14 18 47 0.12 -158 0 0 13 55 11 20 1 33.9 36 291 52 13 51 33 13 58 48 13 48 41 14 1 41 0.12 -157 0 0 13 37 38 20 1 38.0 35 291 53 13 34 0 13 41 16 13 31 7 13 44 9 0.11 -156 0 0 13 19 40 20 1 42.1 34 292 54 13 16 2 13 23 18 13 13 8 13 26 12 0.11 -155 0 0 13 1 16 20 1 46.1 33 292 55 12 57 37 13 4 55 12 54 44 13 7 48 0.11 -154 0 0 12 42 27 20 1 50.0 32 292 56 12 38 48 12 46 6 12 35 54 12 49 0 0.11 -153 0 0 12 23 12 20 1 53.8 31 292 57 12 19 33 12 26 52 12 16 38 12 29 46 0.11 -152 0 0 12 3 33 20 1 57.5 30 292 58 11 59 53 12 7 13 11 56 59 12 10 8 0.11 -151 0 0 11 43 30 20 2 1.0 29 293 59 11 39 49 11 47 10 11 36 54 11 50 5 0.11 -150 0 0 11 23 2 20 2 4.5 28 293 60 11 19 21 11 26 42 11 16 25 11 29 38 0.11 -149 0 0 11 2 9 20 2 7.9 27 293 61 10 58 28 11 5 51 10 55 32 11 8 47 0.11 -148 0 0 10 40 54 20 2 11.1 25 293 62 10 37 12 10 44 35 10 34 16 10 47 32 0.11 -147 0 0 10 19 15 20 2 14.3 24 293 64 10 15 32 10 22 57 10 12 36 10 25 53 0.11 -146 0 0 9 57 12 20 2 17.3 23 293 65 9 53 30 10 0 55 9 50 33 10 3 52 0.11 -145 0 0 9 34 48 20 2 20.2 22 293 66 9 31 5 9 38 31 9 28 7 9 41 28 0.11 -144 0 0 9 12 0 20 2 22.9 21 294 67 9 8 17 9 15 44 9 5 19 9 18 41 0.11 -143 0 0 8 48 51 20 2 25.6 20 294 68 8 45 7 8 52 35 8 42 10 8 55 33 0.11 -142 0 0 8 25 21 20 2 28.1 19 294 69 8 21 36 8 29 5 8 18 38 8 32 3 0.11 -141 0 0 8 1 29 20 2 30.5 18 294 70 7 57 45 8 5 14 7 54 46 8 8 12 0.11 -140 0 0 7 37 17 20 2 32.8 17 294 71 7 33 32 7 41 2 7 30 33 7 44 1 0.11 -139 0 0 7 12 45 20 2 34.9 16 294 72 7 8 59 7 16 30 7 6 0 7 19 29 0.11 -138 0 0 6 47 53 20 2 36.9 15 294 73 6 44 7 6 51 39 6 41 7 6 54 38 0.11 -137 0 0 6 22 42 20 2 38.8 14 294 74 6 18 55 6 26 28 6 15 56 6 29 28 0.11 -136 0 0 5 57 12 20 2 40.5 13 295 75 5 53 25 6 0 59 5 50 25 6 3 59 0.11 -135 0 0 5 31 24 20 2 42.1 12 295 76 5 27 37 5 35 11 5 24 37 5 38 12 0.10 -134 0 0 5 5 19 20 2 43.6 10 295 78 5 1 32 5 9 7 4 58 31 5 12 7 0.10 -133 0 0 4 38 57 20 2 44.9 9 295 79 4 35 9 4 42 45 4 32 8 4 45 46 0.10 -132 0 0 4 12 19 20 2 46.1 8 295 80 4 8 30 4 16 7 4 5 29 4 19 8 0.10 -131 0 0 3 45 24 20 2 47.1 7 295 81 3 41 36 3 49 13 3 38 34 3 52 14 0.10 -130 0 0 3 18 15 20 2 48.0 6 295 82 3 14 26 3 22 4 3 11 24 3 25 6 0.10 -129 0 0 2 50 52 20 2 48.7 5 295 83 2 47 2 2 54 41 2 44 0 2 57 43 0.09 -128 0 0 2 23 14 20 2 49.3 4 295 84 2 19 25 2 27 4 2 16 22 2 30 6 0.09 -127 0 0 1 55 24 20 2 49.8 3 295 85 1 51 34 1 59 13 1 48 31 2 2 16 0.08 -126 0 0 1 27 21 20 2 50.1 2 295 86 1 23 31 1 31 11 1 20 28 1 34 14 0.06 -125 0 0 0 59 6 20 2 50.2 1 295 87 0 55 16 1 2 57 0 52 13 1 6 0 -0.05 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.6 Data for the target star ------------------------ * name: TYC 1866-01936-1 * constellation : Taurus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 05 46 36.3912 DE: +25 11 22.739 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 05 46 36.3913 DE: +25 11 22.739 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 11.9 * B mag [mag]: 12.1 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (1757) Porvoo asteroid class: approx. diameter [km]: 13 approx. diameter ["]: 0.008 distance from Earth [AU]: 2.24970 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#51 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): 0.013", 0.003", 86.06° remarks: * orbital elements for (1757)Porvoo : Mean anomaly = 247.3769235955 deg Arg. of pericenter = 148.9368725436 deg Long. of node = 39.3833624370 deg Inclination = 3.9717307607 deg Eccentricity = 0.1251487606 Semimajor axis = 2.3530189289 AU Perihelion dist = 2.0585415263 AU Mag: H = 13.50, G = 0.15 Epoch of elements : MJD 60574.83072671 TDT (2024 Sep 21.8307) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#512023Apr24,0.80,2024,9,21,19.937439,0.016326,-0.120546,8.954694,1.228869,-0.005564,-0.000123,0.000000,0.000000 146.7892,25.1997,-120.87,0.27,False TYC 1866-01936-1,5.77677530,25.1896496,12.14,11.89,11.76,0.0,0,,5.80217278,25.1997050,6.47,6.16,0,0,0 1757,Porvoo,18.36,12.732,2.2497,0,0,2.579,4.80,,1.0,0 0,247.1501,2024,9,21,148.9369,39.3834,3.9717,0.12515,2.35302,2.05854,13.50,5.0,0.15 1.397,0.0130,0.0030,86,0.0031,Known errors,1.23,0,-1,-1 20240921_1936-1,60140.58 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 13:50 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org