IOTA/IOTA-ES occultation update for (257) Silesia / UCAC4 451-000218 event on 2021 Feb 01, 19:02 UT Visible from Europe Summary ------- On 2021 Feb 01 UT, the 76.2 km diameter asteroid (257) Silesia will occult a 11.3 mag star in the constellation Pisces for observers along a path across Europe. In the case of an occultation, the combined light of the asteroid and the star will drop by 3.92 mag to 15.19 mag (the magnitude of the asteroid) for at most 2.1 seconds. This update is based on UNSO/Flagstaff astrometry for the asteroid kindly provided by Hugh Harris, astrometry for the asteroid kindly provided by Bill Owen, 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: 2021 Feb 01, 18:59 - 2021 Feb 01, 19:05 * geocentric midpoint of event [JD]: 2459247.29330833 * magnitude of target star: 11.30 * magnitude drop [mag]: 3.92 * estimated maximum duration [s]: 2.1 * Moon: 81 % sunlit, 175° distance * Sun: 49° distance * rough path description: Europe The occultation path -------------------- * approximate projected width [km]: 81 * 1 sigma uncertainty interval [path widths]: +/- 0.26 * 1 sigma uncertainty interval [seconds]: +/- 1.0 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.014, +/- 0.010) * 1 sigma uncertainty ellipse (major, minor, PA): (0.015", 0.008", 63°) * approx speed of asteroid's shadow [km/s]: 36.6695 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 451-000218 by 257 Silesia on 2021 Feb 1 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 -144 0 0 - 5 44 51 18 59 38.3 0 90 47 - 6 6 48 - 5 22 51 - 6 18 11 - 5 11 25 .... -143 0 0 - 5 44 11 18 59 38.4 1 90 48 - 6 6 9 - 5 22 11 - 6 17 31 - 5 10 45 -0.23 -142 0 0 - 5 43 3 18 59 38.5 2 90 49 - 6 5 0 - 5 21 2 - 6 16 23 - 5 9 36 -0.29 -141 0 0 - 5 41 25 18 59 38.6 3 89 50 - 6 3 23 - 5 19 24 - 6 14 46 - 5 7 57 -0.31 -140 0 0 - 5 39 19 18 59 38.9 4 89 51 - 6 1 17 - 5 17 18 - 6 12 40 - 5 5 50 -0.32 -139 0 0 - 5 36 43 18 59 39.1 5 89 52 - 5 58 42 - 5 14 42 - 6 10 6 - 5 3 14 -0.33 -138 0 0 - 5 33 39 18 59 39.5 6 89 53 - 5 55 38 - 5 11 37 - 6 7 2 - 5 0 9 -0.34 -137 0 0 - 5 30 6 18 59 39.8 7 89 53 - 5 52 6 - 5 8 3 - 6 3 30 - 4 56 34 -0.34 -136 0 0 - 5 26 3 18 59 40.3 8 89 54 - 5 48 4 - 5 3 59 - 5 59 28 - 4 52 31 -0.34 -135 0 0 - 5 21 32 18 59 40.8 9 89 55 - 5 43 33 - 4 59 27 - 5 54 58 - 4 47 58 -0.35 -134 0 0 - 5 16 32 18 59 41.3 10 89 56 - 5 38 34 - 4 54 26 - 5 50 0 - 4 42 57 -0.35 -133 0 0 - 5 11 2 18 59 41.9 11 89 57 - 5 33 6 - 4 48 56 - 5 44 32 - 4 37 26 -0.35 -132 0 0 - 5 5 4 18 59 42.6 12 89 58 - 5 27 9 - 4 42 57 - 5 38 35 - 4 31 26 -0.35 -131 0 0 - 4 58 37 18 59 43.3 13 89 59 - 5 20 43 - 4 36 28 - 5 32 10 - 4 24 57 -0.35 -130 0 0 - 4 51 41 18 59 44.1 14 89 60 - 5 13 48 - 4 29 31 - 5 25 16 - 4 17 59 -0.35 -129 0 0 - 4 44 16 18 59 44.9 15 88 60 - 5 6 24 - 4 22 5 - 5 17 53 - 4 10 32 -0.35 -128 0 0 - 4 36 22 18 59 45.8 16 88 61 - 4 58 32 - 4 14 9 - 5 10 1 - 4 2 36 -0.35 -127 0 0 - 4 27 59 18 59 46.7 17 88 62 - 4 50 11 - 4 5 45 - 5 1 40 - 3 54 11 -0.36 -126 0 0 - 4 19 8 18 59 47.7 18 88 63 - 4 41 20 - 3 56 52 - 4 52 51 - 3 45 17 -0.36 -125 0 0 - 4 9 47 18 59 48.8 19 88 64 - 4 32 2 - 3 47 30 - 4 43 33 - 3 35 54 -0.36 -124 0 0 - 3 59 58 18 59 49.9 20 88 64 - 4 22 14 - 3 37 39 - 4 33 47 - 3 26 2 -0.36 -123 0 0 - 3 49 40 18 59 51.1 21 88 65 - 4 11 58 - 3 27 19 - 4 23 32 - 3 15 41 -0.36 -122 0 0 - 3 38 54 18 59 52.3 22 88 66 - 4 1 13 - 3 16 31 - 4 12 48 - 3 4 52 -0.36 -121 0 0 - 3 27 38 18 59 53.6 23 88 67 - 3 50 0 - 3 5 13 - 4 1 36 - 2 53 34 -0.36 -120 0 0 - 3 15 55 18 59 54.9 24 88 67 - 3 38 19 - 2 53 28 - 3 49 55 - 2 41 47 -0.36 -119 0 0 - 3 3 43 18 59 56.3 25 88 68 - 3 26 8 - 2 41 13 - 3 37 46 - 2 29 32 -0.36 -118 0 0 - 2 51 2 18 59 57.8 26 88 69 - 3 13 30 - 2 28 31 - 3 25 9 - 2 16 48 -0.36 -117 0 0 - 2 37 53 18 59 59.3 27 88 69 - 3 0 23 - 2 15 20 - 3 12 3 - 2 3 36 -0.36 -116 0 0 - 2 24 16 19 0 0.8 28 88 70 - 2 46 49 - 2 1 40 - 2 58 30 - 1 49 55 -0.36 -115 0 0 - 2 10 11 19 0 2.4 29 89 70 - 2 32 46 - 1 47 33 - 2 44 28 - 1 35 46 -0.36 -114 0 0 - 1 55 38 19 0 4.1 30 89 71 - 2 18 15 - 1 32 57 - 2 29 59 - 1 21 9 -0.36 -113 0 0 - 1 40 37 19 0 5.8 31 89 71 - 2 3 17 - 1 17 54 - 2 15 1 - 1 6 5 -0.36 -112 0 0 - 1 25 8 19 0 7.6 32 89 71 - 1 47 51 - 1 2 23 - 1 59 37 - 0 50 32 -0.36 -111 0 0 - 1 9 12 19 0 9.4 33 89 72 - 1 31 57 - 0 46 24 - 1 43 44 - 0 34 32 -0.36 -110 0 0 - 0 52 49 19 0 11.3 34 89 72 - 1 15 36 - 0 29 58 - 1 27 25 - 0 18 5 -0.36 -109 0 0 - 0 35 58 19 0 13.2 36 89 72 - 0 58 48 - 0 13 4 - 1 10 38 - 0 1 10 -0.36 -108 0 0 - 0 18 40 19 0 15.2 37 89 72 - 0 41 33 0 4 16 - 0 53 24 0 16 12 -0.36 -107 0 0 - 0 0 55 19 0 17.3 38 90 72 - 0 23 51 0 22 4 - 0 35 44 0 34 1 -0.36 -106 0 0 0 17 16 19 0 19.4 39 90 72 - 0 5 42 0 40 18 - 0 17 37 0 52 17 -0.36 -105 0 0 0 35 54 19 0 21.5 40 90 72 0 12 52 0 58 58 0 0 57 1 10 59 -0.36 -104 0 0 0 54 57 19 0 23.7 41 90 72 0 31 53 1 18 5 0 19 56 1 30 7 -0.36 -103 0 0 1 14 27 19 0 25.9 42 91 72 0 51 20 1 37 38 0 39 21 1 49 41 -0.36 -102 0 0 1 34 22 19 0 28.2 43 91 72 1 11 12 1 57 36 0 59 12 2 9 41 -0.36 -101 0 0 1 54 43 19 0 30.6 44 91 71 1 31 30 2 17 59 1 19 28 2 30 6 -0.36 -100 0 0 2 15 28 19 0 33.0 45 92 71 1 52 13 2 38 48 1 40 9 2 50 56 -0.36 - 99 0 0 2 36 39 19 0 35.4 46 92 70 2 13 20 3 0 1 2 1 15 3 12 11 -0.36 - 98 0 0 2 58 13 19 0 37.9 47 93 70 2 34 51 3 21 39 2 22 45 3 33 50 -0.36 - 97 0 0 3 20 12 19 0 40.4 48 93 69 2 56 47 3 43 40 2 44 39 3 55 53 -0.36 - 96 0 0 3 42 34 19 0 43.0 49 94 69 3 19 6 4 6 6 3 6 57 4 18 20 -0.36 - 95 0 0 4 5 19 19 0 45.6 49 94 68 3 41 48 4 28 54 3 29 37 4 41 10 -0.36 - 94 0 0 4 28 27 19 0 48.3 50 95 67 4 4 53 4 52 5 3 52 41 5 4 23 -0.36 - 93 0 0 4 51 58 19 0 51.0 51 96 67 4 28 21 5 15 38 4 16 6 5 27 57 -0.36 - 92 0 0 5 15 50 19 0 53.8 52 96 66 4 52 10 5 39 34 4 39 54 5 51 54 -0.36 - 91 0 0 5 40 3 19 0 56.6 53 97 65 5 16 20 6 3 50 5 4 3 6 16 12 -0.36 - 90 0 0 6 4 38 19 0 59.4 54 98 64 5 40 52 6 28 27 5 28 33 6 40 51 -0.36 - 89 0 0 6 29 32 19 1 2.3 55 99 63 6 5 44 6 53 25 5 53 23 7 5 51 -0.36 - 88 0 0 6 54 47 19 1 5.2 56 100 63 6 30 55 7 18 43 6 18 33 7 31 10 -0.36 - 87 0 0 7 20 21 19 1 8.1 57 101 62 6 56 26 7 44 19 6 44 3 7 56 48 -0.36 - 86 0 0 7 46 13 19 1 11.1 58 102 61 7 22 16 8 10 15 7 9 51 8 22 45 -0.36 - 85 0 0 8 12 24 19 1 14.1 59 103 60 7 48 23 8 36 28 7 35 57 8 48 59 -0.36 - 84 0 0 8 38 52 19 1 17.1 60 104 59 8 14 48 9 2 59 8 2 21 9 15 32 -0.36 - 83 0 0 9 5 36 19 1 20.2 61 106 58 8 41 30 9 29 46 8 29 1 9 42 20 -0.36 - 82 0 0 9 32 37 19 1 23.3 61 107 57 9 8 28 9 56 49 8 55 58 10 9 25 -0.36 - 81 0 0 9 59 53 19 1 26.4 62 109 56 9 35 42 10 24 8 9 23 10 10 36 45 -0.36 - 80 0 0 10 27 24 19 1 29.5 63 110 55 10 3 10 10 51 42 9 50 37 11 4 20 -0.36 - 79 0 0 10 55 9 19 1 32.7 64 112 54 10 30 53 11 19 29 10 18 18 11 32 9 -0.36 - 78 0 0 11 23 7 19 1 35.9 64 114 53 10 58 48 11 47 30 10 46 13 12 0 11 -0.36 - 77 0 0 11 51 18 19 1 39.1 65 116 52 11 26 57 12 15 42 11 14 20 12 28 25 -0.36 - 76 0 0 12 19 40 19 1 42.3 66 118 51 11 55 17 12 44 7 11 42 39 12 56 51 -0.36 - 75 0 0 12 48 13 19 1 45.5 66 121 50 12 23 48 13 12 43 12 11 9 13 25 27 -0.36 - 74 0 0 13 16 57 19 1 48.8 67 123 49 12 52 29 13 41 28 12 39 49 13 54 14 -0.36 - 73 0 0 13 45 50 19 1 52.1 68 125 48 13 21 20 14 10 23 13 8 39 14 23 10 -0.36 - 72 0 0 14 14 51 19 1 55.3 68 128 47 13 50 20 14 39 26 13 37 38 14 52 14 -0.36 - 71 0 0 14 44 0 19 1 58.6 69 131 46 14 19 27 15 8 37 14 6 44 15 21 26 -0.36 - 70 0 0 15 13 16 19 2 1.9 69 134 45 14 48 41 15 37 55 14 35 57 15 50 44 -0.36 - 69 0 0 15 42 38 19 2 5.2 69 137 44 15 18 1 16 7 18 15 5 17 16 20 8 -0.36 - 68 0 0 16 12 5 19 2 8.5 70 140 43 15 47 27 16 36 46 15 34 41 16 49 37 -0.36 - 67 0 0 16 41 36 19 2 11.8 70 143 42 16 16 57 17 6 19 16 4 11 17 19 11 -0.36 - 66 0 0 17 11 10 19 2 15.1 70 146 41 16 46 30 17 35 55 16 33 43 17 48 47 -0.36 - 65 0 0 17 40 48 19 2 18.4 70 149 40 17 16 6 18 5 33 17 3 19 18 18 26 -0.36 - 64 0 0 18 10 26 19 2 21.7 70 153 39 17 45 44 18 35 13 17 32 56 18 48 6 -0.36 - 63 0 0 18 40 6 19 2 24.9 70 156 38 18 15 23 19 4 53 18 2 34 19 17 47 -0.36 - 62 0 0 19 9 45 19 2 28.2 70 159 37 18 45 2 19 34 33 18 32 13 19 47 28 -0.36 - 61 0 0 19 39 24 19 2 31.5 70 163 36 19 14 39 20 4 13 19 1 50 20 17 7 -0.36 - 60 0 0 20 9 1 19 2 34.7 70 166 34 19 44 16 20 33 50 19 31 26 20 46 45 -0.36 - 59 0 0 20 38 34 19 2 38.0 69 169 33 20 13 49 21 3 24 20 1 0 21 16 19 -0.36 - 58 0 0 21 8 5 19 2 41.2 69 172 32 20 43 19 21 32 55 20 30 30 21 45 50 -0.36 - 57 0 0 21 37 31 19 2 44.4 69 175 31 21 12 45 22 2 21 20 59 56 22 15 16 -0.36 - 56 0 0 22 6 52 19 2 47.6 68 178 30 21 42 6 22 31 42 21 29 17 22 44 37 -0.36 - 55 0 0 22 36 7 19 2 50.7 68 180 29 22 11 21 23 0 56 21 58 32 23 13 51 -0.36 - 54 0 0 23 5 14 19 2 53.8 67 183 28 22 40 29 23 30 4 22 27 40 23 42 59 -0.36 - 53 0 0 23 34 15 19 2 57.0 67 186 27 23 9 30 23 59 4 22 56 41 24 11 59 -0.36 - 52 0 0 24 3 7 19 3 0.0 66 188 26 23 38 22 24 27 55 23 25 34 24 40 50 -0.36 - 51 0 0 24 31 49 19 3 3.1 65 190 25 24 7 6 24 56 37 23 54 17 25 9 31 -0.36 - 50 0 0 25 0 22 19 3 6.1 65 192 24 24 35 39 25 25 9 24 22 51 25 38 3 -0.36 - 49 0 0 25 28 44 19 3 9.1 64 194 23 25 4 2 25 53 30 24 51 14 26 6 23 -0.36 - 48 0 0 25 56 55 19 3 12.1 63 196 22 25 32 14 26 21 40 25 19 27 26 34 32 -0.36 - 47 0 0 26 24 53 19 3 15.0 63 198 21 26 0 14 26 49 37 25 47 27 27 2 29 -0.36 - 46 0 0 26 52 39 19 3 17.9 62 200 20 26 28 1 27 17 21 26 15 15 27 30 13 -0.36 - 45 0 0 27 20 11 19 3 20.8 61 202 19 26 55 34 27 44 52 26 42 49 27 57 43 -0.36 - 44 0 0 27 47 30 19 3 23.7 60 204 18 27 22 54 28 12 9 27 10 10 28 24 59 -0.36 - 43 0 0 28 14 33 19 3 26.5 60 205 17 27 50 0 28 39 11 27 37 16 28 52 0 -0.36 - 42 0 0 28 41 22 19 3 29.2 59 207 16 28 16 50 29 5 58 28 4 7 29 18 46 -0.36 - 41 0 0 29 7 55 19 3 31.9 58 208 15 28 43 24 29 32 29 28 30 43 29 45 16 -0.36 - 40 0 0 29 34 11 19 3 34.6 57 209 14 29 9 43 29 58 43 28 57 2 30 11 30 -0.36 - 39 0 0 30 0 11 19 3 37.3 56 211 13 29 35 44 30 24 41 29 23 4 30 37 26 -0.36 - 38 0 0 30 25 53 19 3 39.9 56 212 12 30 1 29 30 50 21 29 48 50 31 3 5 -0.36 - 37 0 0 30 51 17 19 3 42.4 55 213 11 30 26 55 31 15 43 30 14 18 31 28 26 -0.36 - 36 0 0 31 16 23 19 3 45.0 54 214 10 30 52 4 31 40 47 30 39 27 31 53 29 -0.36 - 35 0 0 31 41 11 19 3 47.5 53 216 9 31 16 54 32 5 32 31 4 18 32 18 13 -0.36 - 34 0 0 32 5 40 19 3 49.9 52 217 8 31 41 25 32 29 59 31 28 51 32 42 38 -0.36 - 33 0 0 32 29 49 19 3 52.3 52 218 7 32 5 36 32 54 5 31 53 4 33 6 43 -0.36 - 32 0 0 32 53 38 19 3 54.6 51 219 6 32 29 28 33 17 52 32 16 57 33 30 28 -0.36 - 31 0 0 33 17 7 19 3 57.0 50 220 5 32 53 0 33 41 18 32 40 30 33 53 54 -0.36 - 30 0 0 33 40 16 19 3 59.2 49 221 5 33 16 11 34 4 25 33 3 43 34 16 58 -0.36 - 29 0 0 34 3 4 19 4 1.5 48 222 4 33 39 2 34 27 10 33 26 35 34 39 42 -0.36 - 28 0 0 34 25 31 19 4 3.6 47 223 3 34 1 32 34 49 34 33 49 7 35 2 5 -0.36 - 27 0 0 34 47 37 19 4 5.8 46 224 2 34 23 41 35 11 38 34 11 17 35 24 7 -0.36 - 26 0 0 35 9 22 19 4 7.9 46 225 1 34 45 29 35 33 19 34 33 6 35 45 47 -0.36 - 25 0 0 35 30 45 19 4 9.9 45 226 0 35 6 55 35 54 39 34 54 33 36 7 6 -0.36 - 24 0 0 35 51 46 19 4 12.0 44 227 -1 35 27 59 36 15 38 35 15 39 36 28 2 -0.36 - 23 0 0 36 12 26 19 4 13.9 43 228 -2 35 48 41 36 36 14 35 36 23 36 48 37 -0.36 - 22 0 0 36 32 43 19 4 15.8 42 228 -3 36 9 1 36 56 28 35 56 44 37 8 50 -0.36 - 21 0 0 36 52 38 19 4 17.7 41 229 -4 36 28 59 37 16 20 36 16 44 37 28 40 -0.36 - 20 0 0 37 12 10 19 4 19.6 41 230 -4 36 48 35 37 35 49 36 36 21 37 48 8 -0.36 - 19 0 0 37 31 20 19 4 21.4 40 231 -5 37 7 48 37 54 56 36 55 36 38 7 13 -0.36 - 18 0 0 37 50 8 19 4 23.1 39 232 -6 37 26 38 38 13 41 37 14 28 38 25 56 -0.36 - 17 0 0 38 8 33 19 4 24.8 38 233 -7 37 45 6 38 32 3 37 32 58 38 44 17 -0.36 - 16 0 0 38 26 35 19 4 26.5 37 233 -8 38 3 12 38 50 2 37 51 5 39 2 14 -0.36 - 15 0 0 38 44 15 19 4 28.2 37 234 -9 38 20 55 39 7 39 38 8 49 39 19 49 -0.36 - 14 0 0 39 1 32 19 4 29.7 36 235 -9 38 38 15 39 24 53 38 26 10 39 37 1 -0.36 - 13 0 0 39 18 26 19 4 31.3 35 236 -10 38 55 12 39 41 44 38 43 9 39 53 51 -0.36 - 12 0 0 39 34 57 19 4 32.8 34 237 -11 39 11 46 39 58 12 38 59 45 40 10 18 -0.36 - 11 0 0 39 51 6 19 4 34.3 33 237 -12 39 27 58 40 14 18 39 15 58 40 26 22 -0.36 - 10 0 0 40 6 52 19 4 35.7 33 238 -13 39 43 47 40 30 1 39 31 49 40 42 3 -0.36 - 9 0 0 40 22 15 19 4 37.1 32 239 -14 39 59 13 40 45 21 39 47 16 40 57 22 -0.36 - 8 0 0 40 37 16 19 4 38.5 31 240 -14 40 14 16 41 0 19 40 2 21 41 12 18 -0.36 - 7 0 0 40 51 54 19 4 39.8 30 240 -15 40 28 57 41 14 54 40 17 3 41 26 52 -0.36 - 6 0 0 41 6 9 19 4 41.1 29 241 -16 40 43 15 41 29 6 40 31 23 41 41 2 -0.36 - 5 0 0 41 20 1 19 4 42.3 29 242 -17 40 57 10 41 42 56 40 45 20 41 54 51 -0.36 - 4 0 0 41 33 31 19 4 43.5 28 243 -18 41 10 43 41 56 23 40 58 54 42 8 17 -0.36 - 3 0 0 41 46 39 19 4 44.7 27 243 -18 41 23 53 42 9 28 41 12 6 42 21 20 -0.36 - 2 0 0 41 59 24 19 4 45.8 26 244 -19 41 36 41 42 22 10 41 24 55 42 34 1 -0.36 - 1 0 0 42 11 47 19 4 46.9 26 245 -20 41 49 7 42 34 31 41 37 22 42 46 20 -0.36 0 0 0 42 23 48 19 4 48.0 25 246 -21 42 1 10 42 46 29 41 49 26 42 58 17 -0.36 1 0 0 42 35 26 19 4 49.0 24 246 -21 42 12 51 42 58 5 42 1 8 43 9 51 -0.36 2 0 0 42 46 42 19 4 50.0 23 247 -22 42 24 10 43 9 18 42 12 28 43 21 4 -0.36 3 0 0 42 57 37 19 4 50.9 23 248 -23 42 35 6 43 20 10 42 23 26 43 31 54 -0.36 4 0 0 43 8 9 19 4 51.8 22 248 -24 42 45 41 43 30 40 42 34 2 43 42 23 -0.36 5 0 0 43 18 19 19 4 52.7 21 249 -24 42 55 53 43 40 48 42 44 16 43 52 30 -0.36 6 0 0 43 28 8 19 4 53.6 20 250 -25 43 5 44 43 50 35 42 54 8 44 2 15 -0.36 7 0 0 43 37 35 19 4 54.4 20 251 -26 43 15 13 43 59 59 43 3 38 44 11 39 -0.36 8 0 0 43 46 40 19 4 55.2 19 251 -26 43 24 20 44 9 2 43 12 46 44 20 41 -0.36 9 0 0 43 55 23 19 4 56.0 18 252 -27 43 33 6 44 17 44 43 21 33 44 29 21 -0.36 10 0 0 44 3 45 19 4 56.7 17 253 -28 43 41 30 44 26 4 43 29 58 44 37 40 -0.36 11 0 0 44 11 46 19 4 57.4 17 254 -29 43 49 33 44 34 3 43 38 1 44 45 38 -0.36 12 0 0 44 19 26 19 4 58.0 16 254 -29 43 57 14 44 41 40 43 45 44 44 53 15 -0.36 13 0 0 44 26 44 19 4 58.7 15 255 -30 44 4 34 44 48 57 43 53 4 45 0 30 -0.37 14 0 0 44 33 41 19 4 59.3 15 256 -31 44 11 32 44 55 52 44 0 4 45 7 25 -0.37 15 0 0 44 40 16 19 4 59.8 14 256 -31 44 18 10 45 2 26 44 6 42 45 13 58 -0.37 16 0 0 44 46 31 19 5 0.4 13 257 -32 44 24 26 45 8 40 44 12 59 45 20 11 -0.37 17 0 0 44 52 25 19 5 0.9 12 258 -33 44 30 21 45 14 32 44 18 55 45 26 2 -0.37 18 0 0 44 57 58 19 5 1.4 12 259 -33 44 35 56 45 20 4 44 24 30 45 31 33 -0.37 19 0 0 45 3 10 19 5 1.8 11 259 -34 44 41 9 45 25 15 44 29 44 45 36 44 -0.37 20 0 0 45 8 2 19 5 2.2 10 260 -35 44 46 1 45 30 5 44 34 37 45 41 33 -0.37 21 0 0 45 12 32 19 5 2.6 10 261 -36 44 50 33 45 34 34 44 39 10 45 46 2 -0.37 22 0 0 45 16 42 19 5 3.0 9 261 -36 44 54 44 45 38 43 44 43 21 45 50 11 -0.37 23 0 0 45 20 32 19 5 3.3 8 262 -37 44 58 35 45 42 32 44 47 12 45 53 59 -0.37 24 0 0 45 24 1 19 5 3.6 7 263 -38 45 2 4 45 46 0 44 50 42 45 57 26 -0.37 25 0 0 45 27 9 19 5 3.9 7 264 -38 45 5 13 45 49 8 44 53 52 46 0 33 -0.38 26 0 0 45 29 57 19 5 4.2 6 264 -39 45 8 2 45 51 55 44 56 40 46 3 20 -0.38 27 0 0 45 32 24 19 5 4.4 5 265 -40 45 10 30 45 54 22 44 59 9 46 5 47 -0.38 28 0 0 45 34 31 19 5 4.6 5 266 -40 45 12 38 45 56 28 45 1 17 46 7 53 -0.39 29 0 0 45 36 18 19 5 4.8 4 266 -41 45 14 25 45 58 14 45 3 4 46 9 39 -0.39 30 0 0 45 37 45 19 5 4.9 3 267 -41 45 15 51 45 59 41 45 4 31 46 11 5 -0.40 31 0 0 45 38 51 19 5 5.0 2 268 -42 45 16 58 46 0 46 45 5 37 46 12 11 -0.41 32 0 0 45 39 36 19 5 5.1 2 269 -43 45 17 44 46 1 32 45 6 23 46 12 56 -0.43 33 0 0 45 40 2 19 5 5.2 1 269 -43 45 18 9 46 1 57 45 6 49 46 13 22 -0.48 34 0 0 45 40 7 19 5 5.2 0 270 -44 45 18 15 46 2 3 45 6 54 46 13 27 -0.71 Uncertainty in time = +/- 1 secs Prediction of 2020 Dec 31.0 Data for the target star ------------------------ * name: UCAC4 451-000218 * constellation : Pisces * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 00 09 56.8221 DE: +00 07 56.657 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 00 09 56.8220 DE: +00 07 56.656 * position source: Gaia EDR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 11.3 * B mag [mag]: 12.6 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (257) Silesia asteroid class: approx. diameter [km]: 76 approx. diameter ["]: 0.031 distance from Earth [AU]: 3.40550 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: Preston date of fit: 2020 Dec 12 source of used astrometry: MPC, FASTT, TMO number of used observations: 3159 number of rejected observations: 16 time covered by the observations: 1960 Oct 22 - 2020 Oct 20 1 sigma uncertainty ellipse (major, minor, PA): 0.015", 0.008", 62.8° remarks: * orbital elements for (257)Silesia : Mean anomaly = 320.85493627 deg Arg. of pericenter = 31.56331067 deg Long. of node = 34.05772277 deg Inclination = 3.61326400 deg Eccentricity = 0.11162635 Semimajor axis = 3.11743520 AU Perihelion dist = 2.76944729 AU Mag: H = 9.40, G = 0.15 Epoch of elements : MJD 59246.79300000 TDT (2021 Feb 01.7930) ------ occelmnt file for Occult BEGIN ----------------------------------- Preston2020Dec12,2.1,2021,2,1,19.0394,-0.14754,0.30609,18.66926,8.93517,0.00418,0.00174,0.00000,0.00000 -55.0428,0.2465,-102.18,-16.87,False UCAC4 451-000218,0.16578393,0.1324048,12.60,11.30,10.60,0.0,0,,0.18331148,0.2464782 257,Silesia,15.19,76.2,3.4055,0,0,3.214,23.07,,3.8 0,320.7129,2021,2,1,31.5633,34.0577,3.6133,0.11163,3.11744,2.76945,9.40,5.0,0.15 1.260,0.0150,0.0080,63,0.0080,Known errors 20210201_000218,59214.00 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2020 Dec 31, 00:58 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org