IOTA/IOTA-ES occultation update for (522) Helga / TYC 0290-00862-1 event on 2023 Apr 06, 01:35 UT Visible from Africa, NE USA, SE Canada Summary ------- On 2023 Apr 06 UT, the 104.9 km diameter asteroid (522) Helga will occult a 10.8 mag star in the constellation Virgo for observers along a path across Africa, NE USA, SE Canada. In the case of an occultation, the combined light of the asteroid and the star will drop by 3.89 mag to 14.67 mag (the magnitude of the asteroid) for at most 6.870 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 Apr 06, 01:28 - 2023 Apr 06, 01:41 * geocentric midpoint of event [JD]: 2460040.56614725 * magnitude of target star: 10.81 * magnitude drop [mag]: 3.89 * estimated maximum duration [s]: 6.870 * Moon: 100 % sunlit, 7° distance * Sun: 171° distance * rough path description: Africa, NE USA, SE Canada The occultation path -------------------- * approximate projected width [km]: 115 * 1 sigma uncertainty interval [path widths]: +/- 0.03 * 1 sigma uncertainty interval [seconds]: +/- 1.5 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.010, +/- 0.004) * 1 sigma uncertainty ellipse (major, minor, PA): (0.011", 0.001", 111°) * approx speed of asteroid's shadow [km/s]: 15.2755 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 0290-00862-1 by 522 Helga on 2023 Apr 6 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 -120 0 0 48 0 57 1 41 34.3 0 88 8 48 32 11 47 29 51 48 33 51 47 28 12 .... -119 0 0 48 2 17 1 41 34.2 1 89 8 48 33 31 47 31 11 48 35 10 47 29 32 -0.32 -118 0 0 48 3 19 1 41 34.1 2 90 7 48 34 32 47 32 13 48 36 12 47 30 34 -0.37 -117 0 0 48 4 2 1 41 33.9 2 90 6 48 35 15 47 32 56 48 36 55 47 31 17 -0.39 -116 0 0 48 4 27 1 41 33.7 3 91 5 48 35 40 47 33 21 48 37 20 47 31 42 -0.41 -115 0 0 48 4 33 1 41 33.3 4 92 5 48 35 46 47 33 27 48 37 26 47 31 48 -0.42 -114 0 0 48 4 21 1 41 33.0 4 93 4 48 35 35 47 33 15 48 37 14 47 31 36 -0.42 -113 0 0 48 3 51 1 41 32.5 5 93 3 48 35 5 47 32 45 48 36 45 47 31 6 -0.43 -112 0 0 48 3 3 1 41 32.0 6 94 3 48 34 17 47 31 56 48 35 57 47 30 17 -0.43 -111 0 0 48 1 56 1 41 31.5 6 95 2 48 33 11 47 30 49 48 34 51 47 29 10 -0.43 -110 0 0 48 0 31 1 41 30.8 7 95 2 48 31 46 47 29 23 48 33 26 47 27 44 -0.43 -109 0 0 47 58 48 1 41 30.1 8 96 1 48 30 4 47 27 39 48 31 44 47 26 0 -0.44 -108 0 0 47 56 46 1 41 29.4 8 97 0 48 28 3 47 25 37 48 29 43 47 23 58 -0.44 -107 0 0 47 54 26 1 41 28.6 9 98 0 48 25 44 47 23 16 48 27 24 47 21 37 -0.44 -106 0 0 47 51 48 1 41 27.7 10 98 -1 48 23 7 47 20 37 48 24 47 47 18 58 -0.44 -105 0 0 47 48 51 1 41 26.7 10 99 -2 48 20 12 47 17 39 48 21 52 47 16 0 -0.44 -104 0 0 47 45 37 1 41 25.7 11 100 -2 48 16 58 47 14 23 48 18 38 47 12 44 -0.44 -103 0 0 47 42 3 1 41 24.7 12 101 -3 48 13 26 47 10 48 48 15 6 47 9 9 -0.44 -102 0 0 47 38 12 1 41 23.5 12 101 -4 48 9 36 47 6 55 48 11 16 47 5 16 -0.44 -101 0 0 47 34 2 1 41 22.3 13 102 -5 48 5 28 47 2 44 48 7 8 47 1 4 -0.44 -100 0 0 47 29 34 1 41 21.1 14 103 -5 48 1 1 46 58 14 48 2 41 46 56 34 -0.44 - 99 0 0 47 24 47 1 41 19.7 14 104 -6 47 56 16 46 53 25 47 57 57 46 51 46 -0.45 - 98 0 0 47 19 42 1 41 18.4 15 104 -7 47 51 13 46 48 18 47 52 53 46 46 39 -0.45 - 97 0 0 47 14 18 1 41 16.9 16 105 -7 47 45 51 46 42 53 47 47 32 46 41 13 -0.45 - 96 0 0 47 8 36 1 41 15.4 16 106 -8 47 40 11 46 37 8 47 41 51 46 35 28 -0.45 - 95 0 0 47 2 35 1 41 13.8 17 107 -9 47 34 12 46 31 6 47 35 53 46 29 25 -0.45 - 94 0 0 46 56 15 1 41 12.1 18 107 -9 47 27 55 46 24 44 47 29 36 46 23 4 -0.45 - 93 0 0 46 49 37 1 41 10.4 19 108 -10 47 21 19 46 18 4 47 23 0 46 16 23 -0.45 - 92 0 0 46 42 41 1 41 8.6 19 109 -11 47 14 25 46 11 5 47 16 6 46 9 24 -0.45 - 91 0 0 46 35 25 1 41 6.8 20 110 -11 47 7 12 46 3 47 47 8 53 46 2 6 -0.45 - 90 0 0 46 27 51 1 41 4.8 21 110 -12 46 59 40 45 56 10 47 1 22 45 54 30 -0.45 - 89 0 0 46 19 58 1 41 2.8 21 111 -13 46 51 50 45 48 15 46 53 32 45 46 34 -0.45 - 88 0 0 46 11 47 1 41 0.8 22 112 -13 46 43 41 45 40 1 46 45 23 45 38 20 -0.45 - 87 0 0 46 3 16 1 40 58.6 23 113 -14 46 35 14 45 31 28 46 36 56 45 29 46 -0.45 - 86 0 0 45 54 27 1 40 56.4 23 114 -15 46 26 27 45 22 35 46 28 9 45 20 54 -0.45 - 85 0 0 45 45 19 1 40 54.2 24 114 -15 46 17 22 45 13 24 46 19 4 45 11 43 -0.45 - 84 0 0 45 35 52 1 40 51.8 25 115 -16 46 7 58 45 3 54 46 9 40 45 2 13 -0.45 - 83 0 0 45 26 6 1 40 49.4 25 116 -17 45 58 15 44 54 5 45 59 57 44 52 23 -0.45 - 82 0 0 45 16 1 1 40 46.9 26 117 -17 45 48 13 44 43 57 45 49 55 44 42 15 -0.45 - 81 0 0 45 5 36 1 40 44.3 27 117 -18 45 37 52 44 33 30 45 39 35 44 31 48 -0.45 - 80 0 0 44 54 53 1 40 41.7 28 118 -19 45 27 12 44 22 43 45 28 55 44 21 1 -0.45 - 79 0 0 44 43 51 1 40 39.0 28 119 -20 45 16 13 44 11 38 45 17 56 44 9 56 -0.45 - 78 0 0 44 32 30 1 40 36.2 29 120 -20 45 4 55 44 0 14 45 6 38 43 58 31 -0.45 - 77 0 0 44 20 49 1 40 33.3 30 121 -21 44 53 18 43 48 30 44 55 1 43 46 47 -0.45 - 76 0 0 44 8 50 1 40 30.4 30 121 -22 44 41 21 43 36 27 44 43 5 43 34 44 -0.45 - 75 0 0 43 56 31 1 40 27.3 31 122 -22 44 29 6 43 24 5 44 30 50 43 22 22 -0.45 - 74 0 0 43 43 53 1 40 24.2 32 123 -23 44 16 32 43 11 24 44 18 16 43 9 40 -0.45 - 73 0 0 43 30 56 1 40 21.0 32 124 -24 44 3 38 42 58 23 44 5 23 42 56 40 -0.45 - 72 0 0 43 17 40 1 40 17.8 33 125 -24 43 50 26 42 45 4 43 52 10 42 43 20 -0.46 - 71 0 0 43 4 5 1 40 14.4 34 125 -25 43 36 54 42 31 25 43 38 39 42 29 41 -0.46 - 70 0 0 42 50 11 1 40 11.0 35 126 -26 43 23 3 42 17 28 43 24 49 42 15 44 -0.46 - 69 0 0 42 35 58 1 40 7.5 35 127 -27 43 8 54 42 3 11 43 10 39 42 1 27 -0.46 - 68 0 0 42 21 25 1 40 3.9 36 128 -27 42 54 25 41 48 35 42 56 10 41 46 51 -0.46 - 67 0 0 42 6 34 1 40 0.3 37 129 -28 42 39 37 41 33 40 42 41 23 41 31 56 -0.46 - 66 0 0 41 51 24 1 39 56.5 38 130 -29 42 24 30 41 18 26 42 26 16 41 16 42 -0.46 - 65 0 0 41 35 55 1 39 52.7 38 131 -29 42 9 5 41 2 54 42 10 51 41 1 9 -0.46 - 64 0 0 41 20 7 1 39 48.7 39 131 -30 41 53 20 40 47 2 41 55 7 40 45 17 -0.46 - 63 0 0 41 4 0 1 39 44.7 40 132 -31 41 37 17 40 30 52 41 39 4 40 29 7 -0.46 - 62 0 0 40 47 35 1 39 40.7 40 133 -32 41 20 55 40 14 23 41 22 42 40 12 38 -0.46 - 61 0 0 40 30 50 1 39 36.5 41 134 -32 41 4 15 39 57 36 41 6 1 39 55 50 -0.46 - 60 0 0 40 13 48 1 39 32.2 42 135 -33 40 47 16 39 40 30 40 49 2 39 38 44 -0.46 - 59 0 0 39 56 27 1 39 27.9 43 136 -34 40 29 58 39 23 5 40 31 45 39 21 19 -0.46 - 58 0 0 39 38 48 1 39 23.5 43 137 -35 40 12 22 39 5 23 40 14 9 39 3 37 -0.46 - 57 0 0 39 20 50 1 39 18.9 44 138 -35 39 54 28 38 47 22 39 56 16 38 45 36 -0.46 - 56 0 0 39 2 35 1 39 14.3 45 139 -36 39 36 16 38 29 4 39 38 4 38 27 17 -0.46 - 55 0 0 38 44 2 1 39 9.7 46 140 -37 39 17 46 38 10 27 39 19 34 38 8 41 -0.46 - 54 0 0 38 25 11 1 39 4.9 46 141 -37 38 58 59 37 51 33 39 0 47 37 49 46 -0.46 - 53 0 0 38 6 3 1 39 0.0 47 142 -38 38 39 53 37 32 22 38 41 42 37 30 35 -0.46 - 52 0 0 37 46 37 1 38 55.1 48 143 -39 38 20 31 37 12 53 38 22 19 37 11 6 -0.46 - 51 0 0 37 26 55 1 38 50.1 49 144 -40 38 0 51 36 53 8 38 2 40 36 51 20 -0.46 - 50 0 0 37 6 55 1 38 44.9 49 145 -40 37 40 55 36 33 5 37 42 43 36 31 18 -0.46 - 49 0 0 36 46 39 1 38 39.7 50 146 -41 37 20 41 36 12 46 37 22 30 36 10 59 -0.46 - 48 0 0 36 26 6 1 38 34.5 51 147 -42 37 0 12 35 52 11 37 2 1 35 50 23 -0.46 - 47 0 0 36 5 18 1 38 29.1 51 149 -43 36 39 26 35 31 20 36 41 15 35 29 32 -0.46 - 46 0 0 35 44 13 1 38 23.6 52 150 -43 36 18 24 35 10 13 36 20 13 35 8 25 -0.46 - 45 0 0 35 22 53 1 38 18.1 53 151 -44 35 57 6 34 48 51 35 58 56 34 47 2 -0.46 - 44 0 0 35 1 18 1 38 12.5 53 152 -45 35 35 33 34 27 13 35 37 23 34 25 25 -0.46 - 43 0 0 34 39 28 1 38 6.8 54 154 -45 35 13 46 34 5 21 35 15 35 34 3 32 -0.46 - 42 0 0 34 17 23 1 38 1.0 55 155 -46 34 51 43 33 43 14 34 53 33 33 41 25 -0.46 - 41 0 0 33 55 4 1 37 55.2 56 156 -47 34 29 26 33 20 53 34 31 16 33 19 4 -0.46 - 40 0 0 33 32 32 1 37 49.3 56 158 -47 34 6 56 32 58 18 34 8 45 32 56 29 -0.46 - 39 0 0 33 9 45 1 37 43.3 57 159 -48 33 44 11 32 35 30 33 46 1 32 33 41 -0.46 - 38 0 0 32 46 46 1 37 37.2 57 161 -49 33 21 14 32 12 29 33 23 4 32 10 40 -0.46 - 37 0 0 32 23 34 1 37 31.0 58 162 -49 32 58 3 31 49 15 32 59 53 31 47 26 -0.46 - 36 0 0 32 0 10 1 37 24.8 59 164 -50 32 34 41 31 25 50 32 36 31 31 24 1 -0.46 - 35 0 0 31 36 34 1 37 18.5 59 166 -51 32 11 6 31 2 12 32 12 56 31 0 23 -0.46 - 34 0 0 31 12 47 1 37 12.2 60 167 -51 31 47 20 30 38 24 31 49 10 30 36 35 -0.46 - 33 0 0 30 48 48 1 37 5.7 60 169 -52 31 23 23 30 14 24 31 25 13 30 12 35 -0.46 - 32 0 0 30 24 40 1 36 59.2 61 171 -53 30 59 15 29 50 15 31 1 6 29 48 25 -0.46 - 31 0 0 30 0 21 1 36 52.7 61 173 -53 30 34 57 29 25 55 30 36 48 29 24 6 -0.46 - 30 0 0 29 35 53 1 36 46.1 62 175 -54 30 10 30 29 1 27 30 12 21 28 59 37 -0.46 - 29 0 0 29 11 16 1 36 39.4 62 177 -54 29 45 54 28 36 49 29 47 44 28 35 0 -0.46 - 28 0 0 28 46 31 1 36 32.7 63 179 -55 29 21 9 28 12 3 29 23 0 28 10 14 -0.46 - 27 0 0 28 21 38 1 36 25.9 63 181 -55 28 56 16 27 47 10 28 58 7 27 45 20 -0.46 - 26 0 0 27 56 37 1 36 19.1 64 183 -56 28 31 16 27 22 9 28 33 7 27 20 20 -0.46 - 25 0 0 27 31 30 1 36 12.2 64 186 -56 28 6 9 26 57 2 28 8 0 26 55 12 -0.46 - 24 0 0 27 6 17 1 36 5.3 64 188 -57 27 40 55 26 31 49 27 42 46 26 29 59 -0.46 - 23 0 0 26 40 58 1 35 58.3 65 190 -57 27 15 36 26 6 30 27 17 27 26 4 40 -0.46 - 22 0 0 26 15 34 1 35 51.3 65 193 -58 26 50 12 25 41 6 26 52 3 25 39 17 -0.46 - 21 0 0 25 50 6 1 35 44.3 65 195 -58 26 24 43 25 15 38 26 26 34 25 13 49 -0.46 - 20 0 0 25 24 33 1 35 37.2 65 198 -58 25 59 10 24 50 7 26 1 1 24 48 17 -0.46 - 19 0 0 24 58 58 1 35 30.1 65 200 -59 25 33 34 24 24 32 25 35 25 24 22 43 -0.46 - 18 0 0 24 33 20 1 35 23.0 65 203 -59 25 7 56 23 58 55 25 9 46 23 57 6 -0.46 - 17 0 0 24 7 40 1 35 15.8 65 205 -59 24 42 15 23 33 16 24 44 5 23 31 27 -0.46 - 16 0 0 23 41 59 1 35 8.6 65 208 -59 24 16 32 23 7 36 24 18 23 23 5 47 -0.46 - 15 0 0 23 16 17 1 35 1.5 65 211 -59 23 50 49 22 41 55 23 52 39 22 40 6 -0.46 - 14 0 0 22 50 35 1 34 54.3 65 213 -60 23 25 6 22 16 15 23 26 56 22 14 25 -0.46 - 13 0 0 22 24 53 1 34 47.0 65 216 -60 22 59 23 21 50 35 23 1 13 21 48 45 -0.46 - 12 0 0 21 59 13 1 34 39.8 65 218 -60 22 33 41 21 24 56 22 35 31 21 23 7 -0.46 - 11 0 0 21 33 35 1 34 32.6 65 220 -60 22 8 1 20 59 19 22 9 51 20 57 30 -0.46 - 10 0 0 21 7 58 1 34 25.4 64 223 -60 21 42 23 20 33 45 21 44 13 20 31 56 -0.46 - 9 0 0 20 42 25 1 34 18.2 64 225 -60 21 16 48 20 8 13 21 18 38 20 6 25 -0.46 - 8 0 0 20 16 56 1 34 10.9 64 227 -60 20 51 16 19 42 46 20 53 6 19 40 57 -0.46 - 7 0 0 19 51 31 1 34 3.7 63 230 -60 20 25 49 19 17 23 20 27 39 19 15 35 -0.46 - 6 0 0 19 26 11 1 33 56.6 63 232 -59 20 0 27 18 52 5 20 2 16 18 50 17 -0.46 - 5 0 0 19 0 57 1 33 49.4 62 234 -59 19 35 10 18 26 53 19 36 59 18 25 5 -0.46 - 4 0 0 18 35 48 1 33 42.2 62 236 -59 19 9 59 18 1 47 19 11 49 17 59 59 -0.45 - 3 0 0 18 10 47 1 33 35.1 61 238 -59 18 44 55 17 36 48 18 46 44 17 35 0 -0.45 - 2 0 0 17 45 52 1 33 28.0 61 239 -58 18 19 59 17 11 56 18 21 48 17 10 9 -0.45 - 1 0 0 17 21 6 1 33 21.0 60 241 -58 17 55 10 16 47 13 17 56 59 16 45 25 -0.45 0 0 0 16 56 29 1 33 13.9 60 243 -58 17 30 30 16 22 38 17 32 18 16 20 51 -0.45 1 0 0 16 32 1 1 33 7.0 59 244 -57 17 5 58 15 58 13 17 7 47 15 56 25 -0.45 2 0 0 16 7 42 1 33 0.0 58 246 -57 16 41 37 15 33 57 16 43 25 15 32 10 -0.45 3 0 0 15 43 34 1 32 53.1 58 247 -56 16 17 26 15 9 52 16 19 14 15 8 5 -0.45 4 0 0 15 19 37 1 32 46.3 57 249 -56 15 53 26 14 45 57 15 55 14 14 44 10 -0.45 5 0 0 14 55 51 1 32 39.5 56 250 -55 15 29 37 14 22 15 15 31 25 14 20 28 -0.45 6 0 0 14 32 17 1 32 32.7 55 251 -55 15 6 0 13 58 44 15 7 48 13 56 57 -0.45 7 0 0 14 8 56 1 32 26.1 55 252 -54 14 42 36 13 35 26 14 44 23 13 33 39 -0.45 8 0 0 13 45 48 1 32 19.4 54 254 -54 14 19 25 13 12 21 14 21 12 13 10 35 -0.45 9 0 0 13 22 54 1 32 12.9 53 255 -53 13 56 27 12 49 30 13 58 14 12 47 44 -0.45 10 0 0 13 0 13 1 32 6.4 52 256 -53 13 33 43 12 26 53 13 35 30 12 25 7 -0.45 11 0 0 12 37 48 1 32 0.0 51 257 -52 13 11 14 12 4 30 13 13 1 12 2 44 -0.45 12 0 0 12 15 37 1 31 53.7 50 257 -51 12 49 1 11 42 23 12 50 47 11 40 37 -0.45 13 0 0 11 53 42 1 31 47.4 50 258 -50 12 27 2 11 20 31 12 28 49 11 18 46 -0.45 14 0 0 11 32 3 1 31 41.2 49 259 -50 12 5 20 10 58 56 12 7 6 10 57 10 -0.45 15 0 0 11 10 41 1 31 35.1 48 260 -49 11 43 54 10 37 37 11 45 40 10 35 51 -0.45 16 0 0 10 49 35 1 31 29.1 47 261 -48 11 22 45 10 16 35 11 24 31 10 14 50 -0.45 17 0 0 10 28 47 1 31 23.2 46 261 -48 11 1 54 9 55 50 11 3 40 9 54 5 -0.45 18 0 0 10 8 17 1 31 17.4 45 262 -47 10 41 20 9 35 23 10 43 6 9 33 38 -0.45 19 0 0 9 48 5 1 31 11.6 44 263 -46 10 21 5 9 15 14 10 22 50 9 13 30 -0.45 20 0 0 9 28 12 1 31 6.0 43 263 -45 10 1 8 8 55 24 10 2 54 8 53 40 -0.45 21 0 0 9 8 38 1 31 0.4 42 264 -44 9 41 31 8 35 53 9 43 16 8 34 9 -0.45 22 0 0 8 49 23 1 30 55.0 42 264 -44 9 22 12 8 16 42 9 23 57 8 14 58 -0.45 23 0 0 8 30 27 1 30 49.6 41 265 -43 9 3 14 7 57 50 9 4 58 7 56 6 -0.45 24 0 0 8 11 52 1 30 44.4 40 265 -42 8 44 35 7 39 18 8 46 20 7 37 34 -0.46 25 0 0 7 53 38 1 30 39.2 39 266 -41 8 26 17 7 21 7 8 28 2 7 19 23 -0.46 26 0 0 7 35 44 1 30 34.2 38 266 -40 8 8 20 7 3 16 8 10 4 7 1 33 -0.46 27 0 0 7 18 11 1 30 29.3 37 267 -39 7 50 44 6 45 46 7 52 28 6 44 3 -0.46 28 0 0 7 1 0 1 30 24.5 36 267 -38 7 33 30 6 28 38 7 35 14 6 26 55 -0.46 29 0 0 6 44 10 1 30 19.8 35 267 -38 7 16 37 6 11 52 7 18 21 6 10 9 -0.46 30 0 0 6 27 43 1 30 15.2 34 268 -37 7 0 6 5 55 27 7 1 50 5 53 45 -0.46 31 0 0 6 11 37 1 30 10.7 33 268 -36 6 43 58 5 39 25 6 45 41 5 37 43 -0.46 32 0 0 5 55 55 1 30 6.4 32 268 -35 6 28 12 5 23 45 6 29 55 5 22 3 -0.46 33 0 0 5 40 35 1 30 2.1 31 268 -34 6 12 49 5 8 28 6 14 32 5 6 46 -0.46 34 0 0 5 25 38 1 29 58.0 30 269 -33 5 57 50 4 53 34 5 59 32 4 51 53 -0.46 35 0 0 5 11 4 1 29 54.0 29 269 -32 5 43 13 4 39 4 5 44 56 4 37 22 -0.46 36 0 0 4 56 54 1 29 50.2 28 269 -31 5 29 1 4 24 57 5 30 43 4 23 15 -0.46 37 0 0 4 43 8 1 29 46.4 27 269 -30 5 15 12 4 11 13 5 16 54 4 9 32 -0.46 38 0 0 4 29 46 1 29 42.8 26 270 -29 5 1 47 3 57 54 5 3 29 3 56 12 -0.46 39 0 0 4 16 48 1 29 39.3 25 270 -28 4 48 46 3 44 58 4 50 28 3 43 17 -0.46 40 0 0 4 4 15 1 29 36.0 24 270 -27 4 36 10 3 32 28 4 37 52 3 30 46 -0.46 41 0 0 3 52 6 1 29 32.7 23 270 -27 4 23 59 3 20 21 4 25 41 3 18 40 -0.46 42 0 0 3 40 22 1 29 29.6 22 270 -26 4 12 13 3 8 39 4 13 54 3 6 59 -0.46 43 0 0 3 29 3 1 29 26.6 21 270 -25 4 0 51 2 57 23 4 2 33 2 55 42 -0.46 44 0 0 3 18 9 1 29 23.8 20 270 -24 3 49 55 2 46 31 3 51 36 2 44 50 -0.46 45 0 0 3 7 40 1 29 21.1 19 271 -23 3 39 24 2 36 4 3 41 5 2 34 24 -0.46 46 0 0 2 57 37 1 29 18.5 18 271 -22 3 29 19 2 26 3 3 31 0 2 24 23 -0.47 47 0 0 2 47 59 1 29 16.0 17 271 -21 3 19 39 2 16 27 3 21 20 2 14 47 -0.47 48 0 0 2 38 47 1 29 13.7 16 271 -20 3 10 25 2 7 17 3 12 6 2 5 37 -0.47 49 0 0 2 30 1 1 29 11.5 15 271 -19 3 1 37 1 58 33 3 3 18 1 56 53 -0.47 50 0 0 2 21 41 1 29 9.5 14 271 -18 2 53 16 1 50 15 2 54 57 1 48 35 -0.47 51 0 0 2 13 48 1 29 7.6 13 271 -17 2 45 20 1 42 23 2 47 1 1 40 43 -0.47 52 0 0 2 6 20 1 29 5.8 12 271 -16 2 37 51 1 34 57 2 39 32 1 33 17 -0.47 53 0 0 1 59 19 1 29 4.2 11 271 -15 2 30 49 1 27 57 2 32 29 1 26 17 -0.47 54 0 0 1 52 44 1 29 2.7 10 271 -14 2 24 13 1 21 24 2 25 53 1 19 44 -0.48 55 0 0 1 46 36 1 29 1.3 9 271 -13 2 18 3 1 15 17 2 19 44 1 13 37 -0.48 56 0 0 1 40 55 1 29 0.1 8 271 -12 2 12 21 1 9 37 2 14 1 1 7 57 -0.48 57 0 0 1 35 40 1 28 59.0 7 271 -11 2 7 5 1 4 23 2 8 46 1 2 44 -0.49 58 0 0 1 30 53 1 28 58.0 6 271 -10 2 2 17 0 59 37 2 3 57 0 57 57 -0.49 59 0 0 1 26 32 1 28 57.2 5 271 -9 1 57 55 0 55 17 1 59 36 0 53 37 -0.50 60 0 0 1 22 39 1 28 56.5 4 271 -8 1 54 1 0 51 24 1 55 41 0 49 45 -0.51 61 0 0 1 19 12 1 28 56.0 3 272 -7 1 50 34 0 47 58 1 52 14 0 46 19 -0.53 62 0 0 1 16 13 1 28 55.6 2 272 -6 1 47 34 0 45 0 1 49 14 0 43 20 -0.56 63 0 0 1 13 41 1 28 55.3 1 272 -5 1 45 2 0 42 28 1 46 42 0 40 49 -0.63 64 0 0 1 11 37 1 28 55.2 0 272 -4 1 42 57 0 40 24 1 44 37 0 38 45 -1.10 Uncertainty in time = +/- 1 secs Prediction of 2023 Feb 15.9 Data for the target star ------------------------ * name: TYC 0290-00862-1 * constellation : Virgo * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 12 41 25.1062 DE: +01 43 05.778 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 12 41 25.1061 DE: +01 43 05.778 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 10.8 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (522) Helga asteroid class: approx. diameter [km]: 105 approx. diameter ["]: 0.049 distance from Earth [AU]: 2.94980 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#135 date of fit: 2023 Feb 07 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): 0.011", 0.001", 110.667° remarks: * orbital elements for (522)Helga : Mean anomaly = 185.9831340513 deg Arg. of pericenter = 249.0177510762 deg Long. of node = 116.5570648498 deg Inclination = 4.4188536352 deg Eccentricity = 0.0866108321 Semimajor axis = 3.6284764966 AU Perihelion dist = 3.3142111279 AU Mag: H = 9.08, G = 0.15 Epoch of elements : MJD 60040.06604167 TDT (2023 Apr 06.0660) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#1352023Feb07,6.87,2023,4,6,1.587534,0.164041,0.380529,-7.918490,3.411069,0.000418,-0.000809,0.000001,0.000000 -27.2488,1.5895,156.84,6.30,False TYC 0290-00862-1,12.69030726,1.7182717,0.00,10.81,0.00,0.0,0,,12.71030529,1.5895047,3.89,0.00,0,0,0 522,Helga,14.67,104.9,2.9498,0,0,-1.574,10.17,,7.0,0 0,185.8311,2023,4,5,249.0178,116.5571,4.4189,0.08661,3.62848,3.31421,9.09,5.0,0.15 1.027,0.0107,0.0012,111,0.0013,Known errors,-1.00,-1,-1,-1 20230406_0862-1,59990.87 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Feb 15, 20:57 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org