IOTA/IOTA-ES occultation update for (979) Ilsewa / UCAC4 417-131032 event on 2023 Aug 19, 00:02 UT Visible from Europe, N Africa, South America Summary ------- On 2023 Aug 19 UT, the 37.9 km diameter asteroid (979) Ilsewa will occult a 12.4 mag star in the constellation Aquila for observers along a path across Europe, N Africa, South America. In the case of an occultation, the combined light of the asteroid and the star will drop by 1.91 mag to 14.12 mag (the magnitude of the asteroid) for at most 5.010 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 18, 23:49 - 2023 Aug 19, 00:15 * geocentric midpoint of event [JD]: 2460175.50163154 * magnitude of target star: 12.41 * magnitude drop [mag]: 1.91 * estimated maximum duration [s]: 5.010 * Moon: 6 % sunlit, 120° distance * Sun: 147° distance * rough path description: Europe, N Africa, South America The occultation path -------------------- * approximate projected width [km]: 42 * 1 sigma uncertainty interval [path widths]: +/- 0.06 * 1 sigma uncertainty interval [seconds]: +/- 2.1 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.011, +/- 0.003) * 1 sigma uncertainty ellipse (major, minor, PA): (0.012", 0.000", 74°) * approx speed of asteroid's shadow [km/s]: 7.5589 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 417-131032 by 979 Ilsewa on 2023 Aug 19 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 -125 0 0 - 0 55 45 0 15 10.0 1 97 31 - 0 44 22 - 1 7 8 - 0 42 54 - 1 8 36 .... -124 0 0 - 1 2 10 0 15 9.7 2 97 30 - 0 50 48 - 1 13 32 - 0 49 19 - 1 15 0 -0.29 -123 0 0 - 1 8 5 0 15 9.1 3 97 29 - 0 56 43 - 1 19 26 - 0 55 15 - 1 20 53 -0.36 -122 0 0 - 1 13 29 0 15 8.3 4 97 28 - 1 2 7 - 1 24 49 - 1 0 40 - 1 26 17 -0.38 -121 0 0 - 1 18 23 0 15 7.1 5 96 27 - 1 7 2 - 1 29 42 - 1 5 34 - 1 31 10 -0.40 -120 0 0 - 1 22 46 0 15 5.7 6 96 26 - 1 11 26 - 1 34 5 - 1 9 58 - 1 35 33 -0.41 -119 0 0 - 1 26 39 0 15 4.0 7 96 25 - 1 15 20 - 1 37 58 - 1 13 52 - 1 39 25 -0.42 -118 0 0 - 1 30 3 0 15 2.0 8 96 24 - 1 18 43 - 1 41 21 - 1 17 16 - 1 42 48 -0.42 -117 0 0 - 1 32 56 0 14 59.7 9 96 23 - 1 21 37 - 1 44 14 - 1 20 9 - 1 45 41 -0.43 -116 0 0 - 1 35 19 0 14 57.2 10 96 22 - 1 24 1 - 1 46 36 - 1 22 33 - 1 48 4 -0.43 -115 0 0 - 1 37 12 0 14 54.4 11 96 21 - 1 25 54 - 1 48 30 - 1 24 27 - 1 49 57 -0.43 -114 0 0 - 1 38 36 0 14 51.4 12 96 20 - 1 27 18 - 1 49 53 - 1 25 51 - 1 51 20 -0.43 -113 0 0 - 1 39 30 0 14 48.1 12 96 19 - 1 28 13 - 1 50 47 - 1 26 45 - 1 52 14 -0.43 -112 0 0 - 1 39 55 0 14 44.5 13 96 18 - 1 28 37 - 1 51 11 - 1 27 10 - 1 52 38 -0.44 -111 0 0 - 1 39 50 0 14 40.7 14 96 17 - 1 28 32 - 1 51 6 - 1 27 5 - 1 52 33 -0.44 -110 0 0 - 1 39 16 0 14 36.6 15 96 16 - 1 27 58 - 1 50 32 - 1 26 31 - 1 51 59 -0.44 -109 0 0 - 1 38 12 0 14 32.2 16 96 16 - 1 26 55 - 1 49 28 - 1 25 27 - 1 50 55 -0.44 -108 0 0 - 1 36 39 0 14 27.6 17 96 15 - 1 25 22 - 1 47 56 - 1 23 55 - 1 49 23 -0.44 -107 0 0 - 1 34 38 0 14 22.8 18 96 14 - 1 23 20 - 1 45 54 - 1 21 53 - 1 47 21 -0.44 -106 0 0 - 1 32 7 0 14 17.7 19 96 13 - 1 20 49 - 1 43 23 - 1 19 22 - 1 44 50 -0.44 -105 0 0 - 1 29 7 0 14 12.3 20 96 12 - 1 17 50 - 1 40 24 - 1 16 22 - 1 41 51 -0.44 -104 0 0 - 1 25 39 0 14 6.7 21 97 11 - 1 14 21 - 1 36 56 - 1 12 54 - 1 38 23 -0.44 -103 0 0 - 1 21 42 0 14 0.9 22 97 10 - 1 10 24 - 1 32 59 - 1 8 57 - 1 34 26 -0.44 -102 0 0 - 1 17 17 0 13 54.8 23 97 9 - 1 5 58 - 1 28 34 - 1 4 31 - 1 30 1 -0.44 -101 0 0 - 1 12 23 0 13 48.4 24 97 8 - 1 1 4 - 1 23 40 - 0 59 37 - 1 25 8 -0.44 -100 0 0 - 1 7 1 0 13 41.9 25 97 7 - 0 55 42 - 1 18 19 - 0 54 14 - 1 19 46 -0.44 - 99 0 0 - 1 1 10 0 13 35.1 26 97 6 - 0 49 51 - 1 12 29 - 0 48 23 - 1 13 56 -0.44 - 98 0 0 - 0 54 52 0 13 28.0 27 97 5 - 0 43 32 - 1 6 11 - 0 42 4 - 1 7 38 -0.44 - 97 0 0 - 0 48 6 0 13 20.8 28 97 4 - 0 36 45 - 0 59 25 - 0 35 18 - 1 0 52 -0.44 - 96 0 0 - 0 40 51 0 13 13.3 29 97 3 - 0 29 31 - 0 52 11 - 0 28 3 - 0 53 39 -0.44 - 95 0 0 - 0 33 9 0 13 5.5 30 97 2 - 0 21 48 - 0 44 30 - 0 20 20 - 0 45 57 -0.44 - 94 0 0 - 0 25 0 0 12 57.6 31 97 2 - 0 13 38 - 0 36 21 - 0 12 10 - 0 37 49 -0.44 - 93 0 0 - 0 16 23 0 12 49.4 32 98 1 - 0 5 0 - 0 27 45 - 0 3 32 - 0 29 12 -0.44 - 92 0 0 - 0 7 19 0 12 41.0 33 98 0 0 4 5 - 0 18 41 0 5 33 - 0 20 9 -0.44 - 91 0 0 0 2 13 0 12 32.4 34 98 -1 0 13 37 - 0 9 10 0 15 5 - 0 10 38 -0.44 - 90 0 0 0 12 11 0 12 23.5 34 98 -2 0 23 36 0 0 48 0 25 5 - 0 0 40 -0.44 - 89 0 0 0 22 37 0 12 14.5 35 98 -3 0 34 3 0 11 12 0 35 31 0 9 44 -0.44 - 88 0 0 0 33 29 0 12 5.2 36 99 -4 0 44 56 0 22 4 0 46 24 0 20 36 -0.44 - 87 0 0 0 44 48 0 11 55.7 37 99 -5 0 56 15 0 33 22 0 57 44 0 31 53 -0.44 - 86 0 0 0 56 33 0 11 46.1 38 99 -6 1 8 2 0 45 6 1 9 30 0 43 38 -0.44 - 85 0 0 1 8 45 0 11 36.2 39 99 -7 1 20 14 0 57 17 1 21 43 0 55 48 -0.44 - 84 0 0 1 21 23 0 11 26.1 40 100 -7 1 32 53 1 9 54 1 34 22 1 8 25 -0.44 - 83 0 0 1 34 27 0 11 15.8 41 100 -8 1 45 58 1 22 57 1 47 27 1 21 28 -0.44 - 82 0 0 1 47 56 0 11 5.3 42 100 -9 1 59 28 1 36 25 2 0 58 1 34 56 -0.44 - 81 0 0 2 1 51 0 10 54.6 43 101 -10 2 13 25 1 50 19 2 14 54 1 48 50 -0.44 - 80 0 0 2 16 12 0 10 43.8 44 101 -11 2 27 46 2 4 39 2 29 16 2 3 10 -0.44 - 79 0 0 2 30 58 0 10 32.7 44 102 -12 2 42 33 2 19 24 2 44 3 2 17 54 -0.44 - 78 0 0 2 46 9 0 10 21.5 45 102 -13 2 57 45 2 34 33 2 59 15 2 33 4 -0.44 - 77 0 0 3 1 44 0 10 10.1 46 103 -13 3 13 22 2 50 8 3 14 52 2 48 38 -0.44 - 76 0 0 3 17 45 0 9 58.5 47 103 -14 3 29 23 3 6 7 3 30 54 3 4 37 -0.44 - 75 0 0 3 34 9 0 9 46.7 48 104 -15 3 45 50 3 22 30 3 47 20 3 21 0 -0.44 - 74 0 0 3 50 58 0 9 34.8 49 105 -16 4 2 40 3 39 18 4 4 10 3 37 48 -0.44 - 73 0 0 4 8 11 0 9 22.6 50 105 -17 4 19 54 3 56 30 4 21 24 3 54 59 -0.44 - 72 0 0 4 25 48 0 9 10.4 50 106 -18 4 37 32 4 14 5 4 39 2 4 12 34 -0.44 - 71 0 0 4 43 48 0 8 57.9 51 107 -19 4 55 33 4 32 3 4 57 4 4 30 33 -0.44 - 70 0 0 5 2 11 0 8 45.4 52 107 -19 5 13 57 4 50 25 5 15 28 4 48 54 -0.44 - 69 0 0 5 20 57 0 8 32.6 53 108 -20 5 32 44 5 9 10 5 34 16 5 7 39 -0.44 - 68 0 0 5 40 5 0 8 19.7 54 109 -21 5 51 54 5 28 17 5 53 26 5 26 46 -0.44 - 67 0 0 5 59 36 0 8 6.7 54 110 -22 6 11 26 5 47 46 6 12 58 5 46 15 -0.44 - 66 0 0 6 19 29 0 7 53.6 55 111 -23 6 31 21 6 7 38 6 32 52 6 6 6 -0.44 - 65 0 0 6 39 43 0 7 40.3 56 112 -23 6 51 36 6 27 51 6 53 9 6 26 19 -0.44 - 64 0 0 7 0 19 0 7 26.8 57 113 -24 7 12 14 6 48 25 7 13 46 6 46 53 -0.44 - 63 0 0 7 21 16 0 7 13.3 57 115 -25 7 33 12 7 9 21 7 34 44 7 7 49 -0.44 - 62 0 0 7 42 33 0 6 59.6 58 116 -26 7 54 31 7 30 37 7 56 3 7 29 4 -0.44 - 61 0 0 8 4 11 0 6 45.9 59 117 -27 8 16 10 7 52 13 8 17 43 7 50 41 -0.44 - 60 0 0 8 26 9 0 6 32.0 59 119 -27 8 38 9 8 14 9 8 39 42 8 12 37 -0.44 - 59 0 0 8 48 26 0 6 18.0 60 120 -28 9 0 28 8 36 25 9 2 1 8 34 52 -0.44 - 58 0 0 9 11 3 0 6 3.9 61 122 -29 9 23 6 8 59 0 9 24 39 8 57 27 -0.44 - 57 0 0 9 33 58 0 5 49.7 61 123 -30 9 46 3 9 21 54 9 47 36 9 20 21 -0.44 - 56 0 0 9 57 11 0 5 35.4 62 125 -30 10 9 18 9 45 6 10 10 51 9 43 33 -0.45 - 55 0 0 10 20 43 0 5 21.1 62 127 -31 10 32 51 10 8 36 10 34 24 10 7 3 -0.45 - 54 0 0 10 44 32 0 5 6.7 63 129 -32 10 56 41 10 32 24 10 58 15 10 30 50 -0.45 - 53 0 0 11 8 38 0 4 52.2 63 130 -32 11 20 48 10 56 28 11 22 23 10 54 54 -0.45 - 52 0 0 11 33 0 0 4 37.6 64 133 -33 11 45 12 11 20 49 11 46 47 11 19 15 -0.45 - 51 0 0 11 57 39 0 4 23.0 64 135 -34 12 9 52 11 45 26 12 11 27 11 43 52 -0.45 - 50 0 0 12 22 33 0 4 8.4 64 137 -34 12 34 48 12 10 19 12 36 23 12 8 44 -0.45 - 49 0 0 12 47 42 0 3 53.7 65 139 -35 12 59 59 12 35 27 13 1 34 12 33 52 -0.45 - 48 0 0 13 13 6 0 3 39.0 65 141 -36 13 25 24 13 0 49 13 26 59 12 59 14 -0.45 - 47 0 0 13 38 44 0 3 24.2 65 144 -36 13 51 3 13 26 26 13 52 38 13 24 51 -0.45 - 46 0 0 14 4 35 0 3 9.4 65 146 -37 14 16 56 13 52 16 14 18 31 13 50 40 -0.45 - 45 0 0 14 30 39 0 2 54.6 66 148 -38 14 43 2 14 18 19 14 44 37 14 16 43 -0.45 - 44 0 0 14 56 56 0 2 39.8 66 151 -38 15 9 20 14 44 34 15 10 56 14 42 59 -0.45 - 43 0 0 15 23 25 0 2 25.0 66 153 -39 15 35 50 15 11 1 15 37 26 15 9 26 -0.45 - 42 0 0 15 50 5 0 2 10.2 66 156 -39 16 2 31 15 37 40 16 4 7 15 36 4 -0.45 - 41 0 0 16 16 55 0 1 55.4 66 158 -40 16 29 23 16 4 29 16 30 59 16 2 53 -0.45 - 40 0 0 16 43 56 0 1 40.6 65 161 -40 16 56 25 16 31 29 16 58 1 16 29 53 -0.45 - 39 0 0 17 11 6 0 1 25.8 65 163 -41 17 23 36 16 58 38 17 25 13 16 57 2 -0.45 - 38 0 0 17 38 25 0 1 11.1 65 166 -41 17 50 57 17 25 56 17 52 33 17 24 19 -0.46 - 37 0 0 18 5 53 0 0 56.4 65 168 -42 18 18 25 17 53 22 18 20 2 17 51 45 -0.46 - 36 0 0 18 33 28 0 0 41.7 65 170 -42 18 46 1 18 20 56 18 47 38 18 19 19 -0.46 - 35 0 0 19 1 9 0 0 27.2 64 173 -42 19 13 44 18 48 36 19 15 21 18 46 59 -0.46 - 34 0 0 19 28 57 0 0 12.6 64 175 -43 19 41 33 19 16 23 19 43 10 19 14 46 -0.46 - 33 0 0 19 56 51 23 59 58.1 - 64 177 -43 20 9 28 19 44 16 20 11 5 19 42 39 -0.46 - 32 0 0 20 24 50 23 59 43.8 - 63 179 -44 20 37 28 20 12 14 20 39 5 20 10 36 -0.46 - 31 0 0 20 52 53 23 59 29.4 - 63 181 -44 21 5 32 20 40 16 21 7 9 20 38 38 -0.46 - 30 0 0 21 21 0 23 59 15.2 - 62 183 -44 21 33 39 21 8 22 21 35 17 21 6 44 -0.46 - 29 0 0 21 49 9 23 59 1.1 - 62 185 -44 22 1 50 21 36 31 22 3 28 21 34 53 -0.46 - 28 0 0 22 17 21 23 58 47.0 - 61 187 -45 22 30 2 22 4 42 22 31 41 22 3 4 -0.46 - 27 0 0 22 45 35 23 58 33.1 - 60 189 -45 22 58 17 22 32 54 22 59 55 22 31 17 -0.46 - 26 0 0 23 13 49 23 58 19.3 - 60 190 -45 23 26 32 23 1 8 23 28 10 22 59 30 -0.46 - 25 0 0 23 42 4 23 58 5.6 - 59 192 -45 23 54 47 23 29 22 23 56 26 23 27 44 -0.46 - 24 0 0 24 10 18 23 57 52.0 - 59 194 -45 24 23 2 23 57 36 24 24 41 23 55 58 -0.46 - 23 0 0 24 38 31 23 57 38.5 - 58 195 -46 24 51 16 24 25 48 24 52 54 24 24 10 -0.46 - 22 0 0 25 6 42 23 57 25.2 - 57 197 -46 25 19 27 24 53 59 25 21 6 24 52 21 -0.46 - 21 0 0 25 34 51 23 57 12.1 - 56 198 -46 25 47 37 25 22 7 25 49 15 25 20 29 -0.46 - 20 0 0 26 2 56 23 56 59.0 - 56 200 -46 26 15 42 25 50 12 26 17 21 25 48 34 -0.47 - 19 0 0 26 30 58 23 56 46.1 - 55 201 -46 26 43 44 26 18 13 26 45 23 26 16 35 -0.47 - 18 0 0 26 58 55 23 56 33.4 - 54 202 -46 27 11 42 26 46 10 27 13 20 26 44 32 -0.47 - 17 0 0 27 26 47 23 56 20.9 - 54 203 -46 27 39 34 27 14 2 27 41 13 27 12 23 -0.47 - 16 0 0 27 54 33 23 56 8.5 - 53 205 -46 28 7 20 27 41 47 28 8 59 27 40 9 -0.47 - 15 0 0 28 22 12 23 55 56.2 - 52 206 -46 28 34 59 28 9 27 28 36 38 28 7 48 -0.47 - 14 0 0 28 49 44 23 55 44.2 - 51 207 -46 29 2 32 28 36 59 29 4 10 28 35 20 -0.47 - 13 0 0 29 17 9 23 55 32.3 - 50 208 -45 29 29 56 29 4 23 29 31 35 29 2 45 -0.47 - 12 0 0 29 44 25 23 55 20.6 - 50 209 -45 29 57 12 29 31 39 29 58 51 29 30 1 -0.47 - 11 0 0 30 11 32 23 55 9.1 - 49 210 -45 30 24 19 29 58 47 30 25 58 29 57 8 -0.47 - 10 0 0 30 38 29 23 54 57.8 - 48 211 -45 30 51 16 30 25 44 30 52 55 30 24 6 -0.47 - 9 0 0 31 5 16 23 54 46.7 - 47 212 -45 31 18 2 30 52 31 31 19 41 30 50 53 -0.47 - 8 0 0 31 31 52 23 54 35.7 - 46 213 -45 31 44 38 31 19 8 31 46 17 31 17 29 -0.47 - 7 0 0 31 58 17 23 54 25.0 - 46 214 -44 32 11 3 31 45 33 32 12 42 31 43 55 -0.47 - 6 0 0 32 24 30 23 54 14.5 - 45 215 -44 32 37 15 32 11 46 32 38 54 32 10 8 -0.47 - 5 0 0 32 50 30 23 54 4.1 - 44 216 -44 33 3 15 32 37 47 33 4 54 32 36 9 -0.47 - 4 0 0 33 16 18 23 53 54.0 - 43 217 -44 33 29 2 33 3 35 33 30 41 33 1 57 -0.47 - 3 0 0 33 41 52 23 53 44.1 - 42 218 -43 33 54 35 33 29 10 33 56 14 33 27 31 -0.47 - 2 0 0 34 7 12 23 53 34.3 - 41 219 -43 34 19 55 33 54 30 34 21 33 33 52 52 -0.47 - 1 0 0 34 32 17 23 53 24.8 - 41 220 -43 34 44 59 34 19 36 34 46 37 34 17 58 -0.47 0 0 0 34 57 7 23 53 15.5 - 40 220 -42 35 9 49 34 44 27 35 11 27 34 42 50 -0.47 1 0 0 35 21 42 23 53 6.4 - 39 221 -42 35 34 23 35 9 3 35 36 1 35 7 26 -0.47 2 0 0 35 46 2 23 52 57.5 - 38 222 -41 35 58 41 35 33 24 36 0 19 35 31 46 -0.47 3 0 0 36 10 5 23 52 48.9 - 37 223 -41 36 22 44 35 57 27 36 24 21 35 55 50 -0.47 4 0 0 36 33 51 23 52 40.4 - 37 224 -41 36 46 29 36 21 15 36 48 7 36 19 38 -0.47 5 0 0 36 57 21 23 52 32.1 - 36 224 -40 37 9 57 36 44 45 37 11 35 36 43 8 -0.47 6 0 0 37 20 33 23 52 24.1 - 35 225 -40 37 33 8 37 7 59 37 34 46 37 6 22 -0.47 7 0 0 37 43 27 23 52 16.2 - 34 226 -39 37 56 2 37 30 54 37 57 39 37 29 17 -0.47 8 0 0 38 6 4 23 52 8.6 - 33 227 -39 38 18 37 37 53 32 38 20 14 37 51 55 -0.47 9 0 0 38 28 22 23 52 1.2 - 32 227 -38 38 40 54 38 15 51 38 42 31 38 14 14 -0.47 10 0 0 38 50 21 23 51 53.9 - 32 228 -38 39 2 52 38 37 52 39 4 29 38 36 15 -0.47 11 0 0 39 12 2 23 51 46.9 - 31 229 -37 39 24 32 38 59 34 39 26 8 38 57 58 -0.47 12 0 0 39 33 24 23 51 40.1 - 30 230 -37 39 45 52 39 20 57 39 47 28 39 19 21 -0.47 13 0 0 39 54 26 23 51 33.5 - 29 230 -36 40 6 53 39 42 0 40 8 29 39 40 24 -0.47 14 0 0 40 15 9 23 51 27.1 - 28 231 -36 40 27 34 40 2 44 40 29 10 40 1 9 -0.47 15 0 0 40 35 31 23 51 20.9 - 28 232 -35 40 47 55 40 23 9 40 49 31 40 21 33 -0.47 16 0 0 40 55 34 23 51 14.9 - 27 233 -35 41 7 57 40 43 13 41 9 33 40 41 38 -0.47 17 0 0 41 15 17 23 51 9.1 - 26 233 -34 41 27 38 41 2 58 41 29 14 41 1 22 -0.47 18 0 0 41 34 40 23 51 3.5 - 25 234 -34 41 47 0 41 22 22 41 48 35 41 20 47 -0.47 19 0 0 41 53 42 23 50 58.1 - 25 235 -33 42 6 0 41 41 26 42 7 36 41 39 51 -0.47 20 0 0 42 12 24 23 50 52.9 - 24 236 -33 42 24 40 42 0 9 42 26 15 41 58 34 -0.47 21 0 0 42 30 45 23 50 47.8 - 23 236 -32 42 43 0 42 18 31 42 44 35 42 16 57 -0.47 22 0 0 42 48 45 23 50 43.0 - 22 237 -32 43 0 59 42 36 33 43 2 33 42 34 59 -0.47 23 0 0 43 6 25 23 50 38.3 - 21 238 -31 43 18 37 42 54 14 43 20 11 42 52 40 -0.47 24 0 0 43 23 43 23 50 33.8 - 21 238 -31 43 35 54 43 11 35 43 37 28 43 10 1 -0.47 25 0 0 43 40 41 23 50 29.5 - 20 239 -30 43 52 50 43 28 34 43 54 24 43 27 0 -0.47 26 0 0 43 57 18 23 50 25.4 - 19 240 -30 44 9 25 43 45 12 44 10 58 43 43 39 -0.47 27 0 0 44 13 33 23 50 21.5 - 18 241 -29 44 25 38 44 1 29 44 27 12 43 59 56 -0.47 28 0 0 44 29 28 23 50 17.7 - 18 241 -29 44 41 31 44 17 25 44 43 5 44 15 52 -0.47 29 0 0 44 45 1 23 50 14.1 - 17 242 -28 44 57 3 44 33 0 44 58 36 44 31 27 -0.47 30 0 0 45 0 13 23 50 10.7 - 16 243 -27 45 12 14 44 48 14 45 13 46 44 46 41 -0.47 31 0 0 45 15 4 23 50 7.4 - 15 244 -27 45 27 3 45 3 7 45 28 36 45 1 34 -0.47 32 0 0 45 29 34 23 50 4.3 - 15 244 -26 45 41 31 45 17 38 45 43 4 45 16 6 -0.47 33 0 0 45 43 43 23 50 1.4 - 14 245 -26 45 55 39 45 31 49 45 57 11 45 30 17 -0.47 34 0 0 45 57 31 23 49 58.6 - 13 246 -25 46 9 25 45 45 38 46 10 57 45 44 6 -0.47 35 0 0 46 10 57 23 49 56.0 - 13 246 -25 46 22 50 45 59 6 46 24 22 45 57 35 -0.47 36 0 0 46 24 3 23 49 53.5 - 12 247 -24 46 35 54 46 12 13 46 37 25 46 10 42 -0.47 37 0 0 46 36 47 23 49 51.2 - 11 248 -23 46 48 37 46 24 59 46 50 8 46 23 28 -0.47 38 0 0 46 49 11 23 49 49.1 - 10 249 -23 47 0 59 46 37 24 47 2 30 46 35 53 -0.47 39 0 0 47 1 14 23 49 47.1 - 10 249 -22 47 13 0 46 49 28 47 14 31 46 47 58 -0.47 40 0 0 47 12 55 23 49 45.2 - 9 250 -22 47 24 40 47 1 12 47 26 11 46 59 41 -0.47 41 0 0 47 24 16 23 49 43.5 - 8 251 -21 47 35 59 47 12 34 47 37 30 47 11 4 -0.47 42 0 0 47 35 16 23 49 42.0 - 8 252 -21 47 46 58 47 23 36 47 48 28 47 22 5 -0.47 43 0 0 47 45 56 23 49 40.6 - 7 252 -20 47 57 36 47 34 16 47 59 6 47 32 46 -0.47 44 0 0 47 56 14 23 49 39.3 - 6 253 -19 48 7 53 47 44 36 48 9 23 47 43 7 -0.48 45 0 0 48 6 12 23 49 38.1 - 6 254 -19 48 17 50 47 54 36 48 19 20 47 53 6 -0.48 46 0 0 48 15 50 23 49 37.1 - 5 254 -18 48 27 26 48 4 15 48 28 56 48 2 45 -0.48 47 0 0 48 25 7 23 49 36.3 - 4 255 -18 48 36 42 48 13 33 48 38 11 48 12 3 -0.48 48 0 0 48 34 3 23 49 35.5 - 4 256 -17 48 45 37 48 22 31 48 47 6 48 21 1 -0.49 49 0 0 48 42 39 23 49 34.9 - 3 257 -17 48 54 12 48 31 8 48 55 41 48 29 39 -0.49 50 0 0 48 50 55 23 49 34.4 - 2 257 -16 49 2 26 48 39 25 49 3 55 48 37 56 -0.50 51 0 0 48 58 51 23 49 34.1 - 2 258 -15 49 10 21 48 47 22 49 11 50 48 45 53 -0.52 52 0 0 49 6 26 23 49 33.9 - 1 259 -15 49 17 55 48 54 58 49 19 24 48 53 30 -0.56 53 0 0 49 13 41 23 49 33.8 - 0 260 -14 49 25 9 49 2 14 49 26 38 49 0 46 -0.92 Uncertainty in time = +/- 2 secs Prediction of 2023 Aug 6.7 Data for the target star ------------------------ * name: UCAC4 417-131032 * constellation : Aquila * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 19 40 21.9047 DE: -06 38 04.323 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 19 40 21.9047 DE: -06 38 04.323 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 12.4 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (979) Ilsewa asteroid class: approx. diameter [km]: 38 approx. diameter ["]: 0.028 distance from Earth [AU]: 1.89230 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#60 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): 0.012", 0.000", 73.527° remarks: * orbital elements for (979)Ilsewa : Mean anomaly = 329.4645181575 deg Arg. of pericenter = 115.8567227571 deg Long. of node = 230.5853813379 deg Inclination = 10.1155964339 deg Eccentricity = 0.1384734700 Semimajor axis = 3.1550902787 AU Perihelion dist = 2.7181939796 AU Mag: H = 9.79, G = 0.15 Epoch of elements : MJD 60175.00138889 TDT (2023 Aug 19.0014) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#602023Jul30,5.01,2023,8,19,0.039157,-0.175026,0.372525,-3.861600,-1.814086,0.002971,-0.000718,0.000001,0.000000 -32.2667,-6.5793,-179.63,12.92,False UCAC4 417-131032,19.67275131,-6.6345341,0.00,12.41,0.00,0.0,0,,19.69405215,-6.5792891,1.91,0.00,0,0,0 979,Ilsewa,14.12,37.900,1.8923,0,0,-1.204,-8.43,,2.0,0 0,329.2884,2023,8,18,115.8567,230.5854,10.1156,0.13847,3.15509,2.71819,9.80,5.0,0.15 1.064,0.0117,0.0002,74,0.0117,Known errors,-1.00,0,-1,-1 20230819_131032,60162.67 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Aug 06, 16:04 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org