IOTA/IOTA-ES occultation update for (550) Senta / TYC 5727-02200-1 event on 2024 Oct 07, 17:59 UT Visible from Summary ------- On 2024 Oct 07 UT, the 41.828 km diameter asteroid (550) Senta will occult a 12.0 mag star in the constellation Aquila for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 1.47 mag to 13.13 mag (the magnitude of the asteroid) for at most 2.700 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: 99 * date and approx. time of event: 2024 Oct 07, 17:55 - 2024 Oct 07, 18:03 * geocentric midpoint of event [JD]: 2460591.24978450 * magnitude of target star: 11.99 * magnitude drop [mag]: 1.47 * estimated maximum duration [s]: 2.700 * Moon: 21 % sunlit, 49° distance * Sun: 100° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 77 * 1 sigma uncertainty interval [path widths]: +/- 0.13 * 1 sigma uncertainty interval [seconds]: +/- 1.3 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.017, +/- 0.007) * 1 sigma uncertainty ellipse (major, minor, PA): (0.018", 0.001", 68°) * approx speed of asteroid's shadow [km/s]: 15.5012 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 5727-02200-1 by 550 Senta on 2024 Oct 7 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 - 67 0 0 49 36 59 17 56 0.8 0 107 30 49 15 9 49 59 3 49 9 18 50 5 2 .... - 66 0 0 49 25 16 17 56 0.9 1 108 30 49 3 28 49 47 18 48 57 38 49 53 17 -0.97 - 65 0 0 49 13 44 17 56 1.1 2 109 30 48 51 58 49 35 44 48 46 8 49 41 42 -1.19 - 64 0 0 49 2 23 17 56 1.5 3 110 30 48 40 39 49 24 21 48 34 50 49 30 19 -1.29 - 63 0 0 48 51 14 17 56 1.9 3 111 30 48 29 32 49 13 10 48 23 43 49 19 7 -1.35 - 62 0 0 48 40 17 17 56 2.5 4 111 30 48 18 36 49 2 11 48 12 48 49 8 7 -1.38 - 61 0 0 48 29 32 17 56 3.1 5 112 29 48 7 53 48 51 24 48 2 5 48 57 20 -1.41 - 60 0 0 48 18 59 17 56 3.9 5 113 29 47 57 22 48 40 49 47 51 35 48 46 45 -1.43 - 59 0 0 48 8 39 17 56 4.8 6 114 29 47 47 4 48 30 27 47 41 17 48 36 22 -1.45 - 58 0 0 47 58 32 17 56 5.8 7 114 28 47 36 59 48 20 19 47 31 13 48 26 13 -1.46 - 57 0 0 47 48 39 17 56 7.0 7 115 28 47 27 8 48 10 24 47 21 22 48 16 18 -1.47 - 56 0 0 47 39 0 17 56 8.2 8 116 28 47 17 30 48 0 42 47 11 44 48 6 36 -1.48 - 55 0 0 47 29 34 17 56 9.5 9 117 27 47 8 6 47 51 15 47 2 21 47 57 9 -1.49 - 54 0 0 47 20 23 17 56 11.0 9 117 27 46 58 57 47 42 3 46 53 12 47 47 55 -1.49 - 53 0 0 47 11 27 17 56 12.6 10 118 27 46 50 2 47 33 4 46 44 18 47 38 57 -1.50 - 52 0 0 47 2 45 17 56 14.2 11 119 26 46 41 22 47 24 21 46 35 38 47 30 13 -1.50 - 51 0 0 46 54 18 17 56 16.0 11 120 26 46 32 57 47 15 53 46 27 13 47 21 44 -1.51 - 50 0 0 46 46 7 17 56 17.9 12 120 26 46 24 47 47 7 40 46 19 4 47 13 31 -1.51 - 49 0 0 46 38 12 17 56 20.0 13 121 25 46 16 53 46 59 43 46 11 10 47 5 34 -1.52 - 48 0 0 46 30 32 17 56 22.1 13 122 25 46 9 14 46 52 2 46 3 32 46 57 52 -1.52 - 47 0 0 46 23 8 17 56 24.3 14 123 24 46 1 52 46 44 37 45 56 10 46 50 27 -1.52 - 46 0 0 46 16 1 17 56 26.7 15 124 24 45 54 46 46 37 28 45 49 4 46 43 18 -1.52 - 45 0 0 46 9 10 17 56 29.1 15 124 23 45 47 56 46 30 36 45 42 15 46 36 25 -1.53 - 44 0 0 46 2 36 17 56 31.7 16 125 23 45 41 23 46 24 1 45 35 42 46 29 49 -1.53 - 43 0 0 45 56 19 17 56 34.3 17 126 22 45 35 7 46 17 42 45 29 26 46 23 31 -1.53 - 42 0 0 45 50 18 17 56 37.1 17 127 22 45 29 8 46 11 41 45 23 28 46 17 29 -1.53 - 41 0 0 45 44 35 17 56 40.0 18 128 21 45 23 26 46 5 57 45 17 46 46 11 45 -1.54 - 40 0 0 45 39 10 17 56 42.9 18 129 21 45 18 2 46 0 31 45 12 22 46 6 18 -1.54 - 39 0 0 45 34 2 17 56 46.0 19 129 20 45 12 55 45 55 22 45 7 15 46 1 9 -1.54 - 38 0 0 45 29 12 17 56 49.2 20 130 20 45 8 6 45 50 31 45 2 26 45 56 18 -1.54 - 37 0 0 45 24 40 17 56 52.4 20 131 19 45 3 34 45 45 58 44 57 55 45 51 45 -1.54 - 36 0 0 45 20 26 17 56 55.8 21 132 18 44 59 21 45 41 43 44 53 42 45 47 30 -1.54 - 35 0 0 45 16 30 17 56 59.2 21 133 18 44 55 26 45 37 47 44 49 47 45 43 33 -1.55 - 34 0 0 45 12 53 17 57 2.8 22 134 17 44 51 49 45 34 8 44 46 10 45 39 55 -1.55 - 33 0 0 45 9 34 17 57 6.4 22 135 17 44 48 31 45 30 49 44 42 52 45 36 35 -1.55 - 32 0 0 45 6 33 17 57 10.1 23 136 16 44 45 31 45 27 48 44 39 52 45 33 34 -1.55 - 31 0 0 45 3 51 17 57 13.9 24 137 15 44 42 49 45 25 6 44 37 11 45 30 51 -1.55 - 30 0 0 45 1 28 17 57 17.8 24 137 15 44 40 26 45 22 42 44 34 48 45 28 28 -1.55 - 29 0 0 44 59 24 17 57 21.8 25 138 14 44 38 23 45 20 38 44 32 44 45 26 23 -1.55 - 28 0 0 44 57 39 17 57 25.9 25 139 13 44 36 37 45 18 52 44 30 59 45 24 37 -1.55 - 27 0 0 44 56 12 17 57 30.0 26 140 13 44 35 11 45 17 25 44 29 33 45 23 11 -1.56 - 26 0 0 44 55 5 17 57 34.2 26 141 12 44 34 4 45 16 18 44 28 26 45 22 3 -1.56 - 25 0 0 44 54 17 17 57 38.5 26 142 11 44 33 16 45 15 30 44 27 38 45 21 15 -1.56 - 24 0 0 44 53 48 17 57 42.8 27 143 11 44 32 47 45 15 1 44 27 9 45 20 46 -1.56 - 23 0 0 44 53 38 17 57 47.2 27 144 10 44 32 37 45 14 51 44 26 59 45 20 36 -1.56 - 22 0 0 44 53 47 17 57 51.7 28 145 9 44 32 46 45 15 0 44 27 8 45 20 46 -1.56 - 21 0 0 44 54 16 17 57 56.2 28 146 9 44 33 15 45 15 29 44 27 36 45 21 14 -1.56 - 20 0 0 44 55 3 17 58 0.8 29 147 8 44 34 2 45 16 17 44 28 24 45 22 2 -1.56 - 19 0 0 44 56 10 17 58 5.5 29 149 7 44 35 8 45 17 24 44 29 30 45 23 9 -1.56 - 18 0 0 44 57 36 17 58 10.2 29 150 7 44 36 34 45 18 50 44 30 56 45 24 36 -1.56 - 17 0 0 44 59 21 17 58 14.9 30 151 6 44 38 18 45 20 35 44 32 40 45 26 21 -1.56 - 16 0 0 45 1 25 17 58 19.7 30 152 5 44 40 22 45 22 40 44 34 43 45 28 26 -1.56 - 15 0 0 45 3 48 17 58 24.6 30 153 4 44 42 45 45 25 4 44 37 6 45 30 50 -1.57 - 14 0 0 45 6 30 17 58 29.5 30 154 4 44 45 26 45 27 47 44 39 47 45 33 33 -1.57 - 13 0 0 45 9 31 17 58 34.4 31 155 3 44 48 26 45 30 48 44 42 47 45 36 35 -1.57 - 12 0 0 45 12 51 17 58 39.4 31 156 2 44 51 46 45 34 9 44 46 6 45 39 56 -1.57 - 11 0 0 45 16 30 17 58 44.4 31 157 2 44 55 24 45 37 48 44 49 44 45 43 35 -1.57 - 10 0 0 45 20 27 17 58 49.4 31 159 1 44 59 20 45 41 47 44 53 40 45 47 34 -1.57 - 9 0 0 45 24 43 17 58 54.5 32 160 0 45 3 35 45 46 4 44 57 55 45 51 51 -1.57 - 8 0 0 45 29 18 17 58 59.5 32 161 -1 45 8 9 45 50 39 45 2 28 45 56 27 -1.57 - 7 0 0 45 34 10 17 59 4.6 32 162 -1 45 13 0 45 55 33 45 7 20 46 1 21 -1.57 - 6 0 0 45 39 21 17 59 9.8 32 163 -2 45 18 10 46 0 45 45 12 29 46 6 33 -1.57 - 5 0 0 45 44 50 17 59 14.9 32 164 -3 45 23 38 46 6 15 45 17 57 46 12 3 -1.57 - 4 0 0 45 50 37 17 59 20.0 32 166 -3 45 29 24 46 12 3 45 23 42 46 17 52 -1.57 - 3 0 0 45 56 41 17 59 25.2 32 167 -4 45 35 27 46 18 9 45 29 45 46 23 58 -1.57 - 2 0 0 46 3 4 17 59 30.3 32 168 -5 45 41 48 46 24 32 45 36 6 46 30 22 -1.57 - 1 0 0 46 9 43 17 59 35.5 32 169 -6 45 48 26 46 31 13 45 42 44 46 37 3 -1.57 0 0 0 46 16 40 17 59 40.6 32 170 -6 45 55 22 46 38 12 45 49 39 46 44 2 -1.57 1 0 0 46 23 54 17 59 45.8 32 172 -7 46 2 34 46 45 27 45 56 51 46 51 18 -1.57 2 0 0 46 31 25 17 59 50.9 32 173 -8 46 10 3 46 52 59 46 4 20 46 58 51 -1.57 3 0 0 46 39 13 17 59 56.0 32 174 -8 46 17 49 47 0 48 46 12 6 47 6 40 -1.57 4 0 0 46 47 16 18 0 1.2 32 175 -9 46 25 52 47 8 54 46 20 7 47 14 46 -1.57 5 0 0 46 55 36 18 0 6.2 32 176 -10 46 34 10 47 17 15 46 28 25 47 23 8 -1.57 6 0 0 47 4 12 18 0 11.3 32 177 -11 46 42 44 47 25 53 46 36 59 47 31 46 -1.57 7 0 0 47 13 4 18 0 16.4 32 179 -11 46 51 34 47 34 46 46 45 48 47 40 40 -1.57 8 0 0 47 22 11 18 0 21.4 32 180 -12 47 0 39 47 43 55 46 54 53 47 49 49 -1.57 9 0 0 47 31 33 18 0 26.4 32 181 -13 47 10 0 47 53 19 47 4 13 47 59 14 -1.57 10 0 0 47 41 10 18 0 31.4 32 182 -13 47 19 35 48 2 58 47 13 48 48 8 53 -1.57 11 0 0 47 51 2 18 0 36.3 31 183 -14 47 29 25 48 12 52 47 23 37 48 18 47 -1.57 12 0 0 48 1 8 18 0 41.2 31 185 -15 47 39 29 48 23 0 47 33 41 48 28 56 -1.57 13 0 0 48 11 28 18 0 46.0 31 186 -15 47 49 47 48 33 21 47 43 59 48 39 18 -1.57 14 0 0 48 22 1 18 0 50.8 31 187 -16 48 0 19 48 43 57 47 54 30 48 49 54 -1.57 15 0 0 48 32 48 18 0 55.6 30 188 -17 48 11 4 48 54 46 48 5 14 49 0 44 -1.57 16 0 0 48 43 48 18 1 0.3 30 189 -17 48 22 2 49 5 48 48 16 12 49 11 46 -1.57 17 0 0 48 55 1 18 1 4.9 30 190 -18 48 33 13 49 17 3 48 27 22 49 23 2 -1.57 18 0 0 49 6 26 18 1 9.5 29 191 -18 48 44 36 49 28 30 48 38 45 49 34 29 -1.58 19 0 0 49 18 3 18 1 14.1 29 193 -19 48 56 11 49 40 9 48 50 20 49 46 9 -1.58 20 0 0 49 29 52 18 1 18.6 29 194 -20 49 7 58 49 52 0 49 2 6 49 58 1 -1.58 21 0 0 49 41 52 18 1 23.0 28 195 -20 49 19 56 50 4 3 49 14 4 50 10 4 -1.58 22 0 0 49 54 4 18 1 27.4 28 196 -21 49 32 5 50 16 16 49 26 12 50 22 18 -1.58 23 0 0 50 6 25 18 1 31.7 28 197 -21 49 44 25 50 28 40 49 38 32 50 34 42 -1.58 24 0 0 50 18 57 18 1 35.9 27 198 -22 49 56 55 50 41 14 49 51 1 50 47 17 -1.58 25 0 0 50 31 39 18 1 40.0 27 199 -22 50 9 35 50 53 58 50 3 40 51 0 1 -1.58 26 0 0 50 44 30 18 1 44.1 26 200 -23 50 22 24 51 6 51 50 16 29 51 12 55 -1.58 27 0 0 50 57 30 18 1 48.1 26 201 -23 50 35 22 51 19 53 50 29 26 51 25 58 -1.58 28 0 0 51 10 39 18 1 52.1 26 202 -24 50 48 29 51 33 4 50 42 33 51 39 9 -1.58 29 0 0 51 23 57 18 1 55.9 25 203 -25 51 1 44 51 46 23 50 55 47 51 52 29 -1.58 30 0 0 51 37 22 18 1 59.7 25 204 -25 51 15 7 51 59 50 51 9 10 52 5 57 -1.58 31 0 0 51 50 54 18 2 3.4 24 205 -25 51 28 38 52 13 25 51 22 40 52 19 32 -1.58 32 0 0 52 4 33 18 2 7.1 24 206 -26 51 42 15 52 27 6 51 36 17 52 33 14 -1.58 33 0 0 52 18 20 18 2 10.6 23 207 -26 51 55 59 52 40 54 51 50 1 52 47 2 -1.58 34 0 0 52 32 12 18 2 14.1 23 208 -27 52 9 50 52 54 49 52 3 50 53 0 57 -1.58 35 0 0 52 46 10 18 2 17.4 22 209 -27 52 23 46 53 8 49 52 17 46 53 14 58 -1.58 36 0 0 53 0 13 18 2 20.7 22 210 -28 52 37 48 53 22 54 52 31 47 53 29 3 -1.58 37 0 0 53 14 22 18 2 23.9 21 211 -28 52 51 54 53 37 4 52 45 53 53 43 14 -1.58 38 0 0 53 28 35 18 2 27.0 21 212 -28 53 6 5 53 51 19 53 0 4 53 57 29 -1.58 39 0 0 53 42 52 18 2 30.0 20 213 -29 53 20 21 54 5 38 53 14 19 54 11 49 -1.58 40 0 0 53 57 12 18 2 33.0 20 214 -29 53 34 40 54 20 0 53 28 37 54 26 12 -1.58 41 0 0 54 11 36 18 2 35.8 19 215 -30 53 49 2 54 34 26 53 42 59 54 40 38 -1.58 42 0 0 54 26 3 18 2 38.6 19 216 -30 54 3 27 54 48 54 53 57 24 54 55 7 -1.58 43 0 0 54 40 32 18 2 41.3 18 217 -30 54 17 55 55 3 25 54 11 52 55 9 38 -1.58 44 0 0 54 55 4 18 2 43.8 17 218 -31 54 32 25 55 17 58 54 26 21 55 24 11 -1.58 45 0 0 55 9 37 18 2 46.3 17 219 -31 54 46 56 55 32 32 54 40 52 55 38 46 -1.58 46 0 0 55 24 11 18 2 48.7 16 220 -31 55 1 29 55 47 8 54 55 24 55 53 22 -1.58 47 0 0 55 38 46 18 2 51.0 16 221 -31 55 16 3 56 1 44 55 9 58 56 7 59 -1.58 48 0 0 55 53 21 18 2 53.2 15 221 -32 55 30 37 56 16 21 55 24 32 56 22 36 -1.58 49 0 0 56 7 57 18 2 55.4 15 222 -32 55 45 11 56 30 58 55 39 5 56 37 13 -1.58 50 0 0 56 22 32 18 2 57.4 14 223 -32 55 59 45 56 45 34 55 53 39 56 51 50 -1.58 51 0 0 56 37 6 18 2 59.3 14 224 -32 56 14 18 57 0 9 56 8 12 57 6 25 -1.58 52 0 0 56 51 39 18 3 1.2 13 225 -32 56 28 50 57 14 44 56 22 44 57 21 0 -1.58 53 0 0 57 6 11 18 3 3.0 12 226 -33 56 43 21 57 29 16 56 37 14 57 35 33 -1.58 54 0 0 57 20 40 18 3 4.7 12 227 -33 56 57 50 57 43 47 56 51 43 57 50 4 -1.58 55 0 0 57 35 8 18 3 6.2 11 228 -33 57 12 17 57 58 15 57 6 10 58 4 32 -1.58 56 0 0 57 49 33 18 3 7.8 11 229 -33 57 26 41 58 12 41 57 20 33 58 18 58 -1.59 57 0 0 58 3 55 18 3 9.2 10 230 -33 57 41 2 58 27 3 57 34 54 58 33 21 -1.59 58 0 0 58 18 13 18 3 10.5 10 230 -33 57 55 20 58 41 23 57 49 12 58 47 40 -1.59 59 0 0 58 32 28 18 3 11.8 9 231 -33 58 9 34 58 55 38 58 3 27 59 1 56 -1.59 60 0 0 58 46 39 18 3 13.0 9 232 -33 58 23 45 59 9 49 58 17 37 59 16 7 -1.59 61 0 0 59 0 46 18 3 14.0 8 233 -34 58 37 52 59 23 57 58 31 44 59 30 15 -1.59 62 0 0 59 14 48 18 3 15.1 7 234 -34 58 51 54 59 37 59 58 45 46 59 44 17 -1.59 63 0 0 59 28 46 18 3 16.0 7 235 -34 59 5 51 59 51 57 58 59 43 59 58 15 -1.60 64 0 0 59 42 38 18 3 16.8 6 236 -34 59 19 43 60 5 49 59 13 35 60 12 7 -1.60 65 0 0 59 56 24 18 3 17.6 6 237 -34 59 33 29 60 19 35 59 27 21 60 25 53 -1.60 66 0 0 60 10 5 18 3 18.3 5 237 -34 59 47 10 60 33 16 59 41 2 60 39 34 -1.61 67 0 0 60 23 40 18 3 19.0 5 238 -34 60 0 45 60 46 51 59 54 37 60 53 9 -1.61 68 0 0 60 37 9 18 3 19.5 4 239 -34 60 14 14 61 0 19 60 8 6 61 6 37 -1.62 69 0 0 60 50 30 18 3 20.0 4 240 -34 60 27 36 61 13 41 60 21 28 61 19 59 -1.63 70 0 0 61 3 46 18 3 20.4 3 241 -34 60 40 52 61 26 56 60 34 44 61 33 13 -1.64 71 0 0 61 16 54 18 3 20.7 3 242 -34 60 54 0 61 40 3 60 47 53 61 46 21 -1.65 72 0 0 61 29 55 18 3 21.0 2 243 -33 61 7 2 61 53 4 61 0 54 61 59 21 -1.67 73 0 0 61 42 48 18 3 21.2 2 244 -33 61 19 56 62 5 57 61 13 49 62 12 14 -1.71 74 0 0 61 55 34 18 3 21.4 1 244 -33 61 32 43 62 18 42 61 26 35 62 24 59 -1.78 75 0 0 62 8 12 18 3 21.5 0 245 -33 61 45 21 62 31 19 61 39 14 62 37 36 -2.01 76 0 0 .. .. .... .. .. .. .. .. .. 61 57 52 .. .. .. 61 51 45 .. .. .. .... Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.6 Data for the target star ------------------------ * name: TYC 5727-02200-1 * constellation : Aquila * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 19 38 55.0286 DE: -10 58 16.947 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 19 38 55.0285 DE: -10 58 16.948 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 12.0 * B mag [mag]: 12.4 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (550) Senta asteroid class: approx. diameter [km]: 42 approx. diameter ["]: 0.036 distance from Earth [AU]: 1.58980 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#57 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): 0.018", 0.001", 68.001° remarks: * orbital elements for (550)Senta : Mean anomaly = 5.4457863296 deg Arg. of pericenter = 45.1948315406 deg Long. of node = 270.6605465138 deg Inclination = 10.1067227236 deg Eccentricity = 0.2221507038 Semimajor axis = 2.5886864561 AU Perihelion dist = 2.0136079380 AU Mag: H = 9.32, G = 0.15 Epoch of elements : MJD 60590.74978417 TDT (2024 Oct 07.7498) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#572023Apr24,2.70,2024,10,7,17.994828,-0.097882,0.836064,8.689916,1.017565,0.005192,0.000740,0.000000,0.000000 8.2763,-10.9147,-93.02,-5.90,False TYC 5727-02200-1,19.64861908,-10.9713742,12.40,11.99,11.77,0.0,0,,19.67139779,-10.9146826,1.46,1.30,0,0,0 550,Senta,13.13,41.828,1.5898,0,0,3.264,5.63,,1.8,0 0,5.2684,2024,10,7,45.1948,270.6605,10.1067,0.22215,2.58869,2.01361,9.32,5.0,0.15 1.135,0.0180,0.0012,68,0.0049,Known errors,0.96,0,-1,-1 20241007_2200-1,60140.62 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 14:49 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org