IOTA/IOTA-ES occultation update for (196) Philomela / TYC 6856-01792-1 event on 2023 Oct 02, 15:14 UT Visible from India Summary ------- On 2023 Oct 02 UT, the 140.1 km diameter asteroid (196) Philomela will occult a 10.8 mag star in the constellation Sagittarius for observers along a path across India. In the case of an occultation, the combined light of the asteroid and the star will drop by 1.80 mag to 12.39 mag (the magnitude of the asteroid) for at most 7.650 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 Oct 02, 15:09 - 2023 Oct 02, 15:19 * geocentric midpoint of event [JD]: 2460220.13491016 * magnitude of target star: 10.82 * magnitude drop [mag]: 1.80 * estimated maximum duration [s]: 7.650 * Moon: 86 % sunlit, 136° distance * Sun: 87° distance * rough path description: India The occultation path -------------------- * approximate projected width [km]: 178 * 1 sigma uncertainty interval [path widths]: +/- 0.02 * 1 sigma uncertainty interval [seconds]: +/- 0.7 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.006, +/- 0.001) * 1 sigma uncertainty ellipse (major, minor, PA): (0.006", 0.001", 95°) * approx speed of asteroid's shadow [km/s]: 18.3187 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 6856-01792-1 by 196 Philomela on 2023 Oct 2 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 - 34 0 0 29 23 52 15 9 42.7 0 123 54 28 27 4 .. .. .. 28 24 16 .. .. .. .... - 33 0 0 28 49 47 15 9 42.8 1 124 54 27 53 11 29 47 15 27 50 23 29 50 9 -0.27 - 32 0 0 28 15 56 15 9 43.1 2 124 54 27 19 32 29 13 11 27 16 44 29 16 4 -0.50 - 31 0 0 27 42 20 15 9 43.5 3 125 54 26 46 8 28 39 23 26 43 21 28 42 15 -0.58 - 30 0 0 27 9 1 15 9 44.0 4 125 54 26 13 1 28 5 51 26 10 15 28 8 42 -0.63 - 29 0 0 26 35 59 15 9 44.7 5 125 54 25 40 12 27 32 37 25 37 27 27 35 27 -0.66 - 28 0 0 26 3 17 15 9 45.5 6 126 53 25 7 42 26 59 41 25 4 57 27 2 31 -0.68 - 27 0 0 25 30 54 15 9 46.5 8 126 53 24 35 32 26 27 5 24 32 47 26 29 54 -0.69 - 26 0 0 24 58 52 15 9 47.6 9 127 53 24 3 43 25 54 50 24 0 59 25 57 38 -0.70 - 25 0 0 24 27 12 15 9 48.9 10 127 53 23 32 15 25 22 56 23 29 32 25 25 44 -0.71 - 24 0 0 23 55 54 15 9 50.3 11 128 53 23 1 10 24 51 26 22 58 28 24 54 13 -0.72 - 23 0 0 23 25 1 15 9 51.9 12 128 52 22 30 29 24 20 19 22 27 47 24 23 6 -0.72 - 22 0 0 22 54 32 15 9 53.6 13 129 52 22 0 13 23 49 37 21 57 32 23 52 23 -0.73 - 21 0 0 22 24 28 15 9 55.5 14 129 51 21 30 22 23 19 20 21 27 42 23 22 5 -0.73 - 20 0 0 21 54 51 15 9 57.5 15 129 51 21 0 58 22 49 30 20 58 18 22 52 15 -0.73 - 19 0 0 21 25 41 15 9 59.6 16 130 51 20 32 0 22 20 7 20 29 21 22 22 51 -0.74 - 18 0 0 20 56 59 15 10 1.9 17 130 50 20 3 31 21 51 12 20 0 52 21 53 55 -0.74 - 17 0 0 20 28 46 15 10 4.4 18 131 50 19 35 30 21 22 46 19 32 51 21 25 28 -0.74 - 16 0 0 20 1 2 15 10 6.9 19 131 49 19 7 58 20 54 49 19 5 20 20 57 31 -0.74 - 15 0 0 19 33 48 15 10 9.6 20 132 48 18 40 56 20 27 23 18 38 19 20 30 4 -0.75 - 14 0 0 19 7 5 15 10 12.5 21 132 48 18 14 25 20 0 27 18 11 49 20 3 8 -0.75 - 13 0 0 18 40 54 15 10 15.4 22 133 47 17 48 25 19 34 3 17 45 49 19 36 43 -0.75 - 12 0 0 18 15 14 15 10 18.5 23 133 46 17 22 57 19 8 11 17 20 22 19 10 51 -0.75 - 11 0 0 17 50 7 15 10 21.8 24 133 46 16 58 2 18 42 52 16 55 27 18 45 31 -0.75 - 10 0 0 17 25 32 15 10 25.1 25 134 45 16 33 39 18 18 6 16 31 4 18 20 45 -0.76 - 9 0 0 17 1 32 15 10 28.6 26 134 44 16 9 49 17 53 54 16 7 15 17 56 32 -0.76 - 8 0 0 16 38 5 15 10 32.2 27 135 44 15 46 33 17 30 16 15 44 0 17 32 53 -0.76 - 7 0 0 16 15 13 15 10 35.9 28 135 43 15 23 52 17 7 13 15 21 19 17 9 50 -0.76 - 6 0 0 15 52 55 15 10 39.7 29 136 42 15 1 45 16 44 45 14 59 12 16 47 21 -0.76 - 5 0 0 15 31 13 15 10 43.6 30 136 41 14 40 13 16 22 52 14 37 41 16 25 28 -0.76 - 4 0 0 15 10 7 15 10 47.7 31 137 40 14 19 16 16 1 35 14 16 45 16 4 10 -0.76 - 3 0 0 14 49 37 15 10 51.8 32 138 40 13 58 56 15 40 55 13 56 25 15 43 29 -0.76 - 2 0 0 14 29 43 15 10 56.1 32 138 39 13 39 11 15 20 51 13 36 41 15 23 25 -0.77 - 1 0 0 14 10 25 15 11 0.4 33 139 38 13 20 3 15 1 24 13 17 33 15 3 58 -0.77 - 0 0 0 13 51 45 15 11 4.8 34 139 37 13 1 32 14 42 34 12 59 2 14 45 7 -0.77 1 0 0 13 33 42 15 11 9.4 35 140 36 12 43 37 14 24 22 12 41 8 14 26 55 -0.77 2 0 0 13 16 16 15 11 14.0 36 141 35 12 26 20 14 6 48 12 23 51 14 9 20 -0.77 3 0 0 12 59 28 15 11 18.7 37 141 34 12 9 40 13 49 51 12 7 12 13 52 23 -0.77 4 0 0 12 43 18 15 11 23.6 38 142 33 11 53 38 13 33 33 11 51 10 13 36 4 -0.77 5 0 0 12 27 46 15 11 28.5 38 143 33 11 38 14 13 17 53 11 35 46 13 20 24 -0.77 6 0 0 12 12 52 15 11 33.4 39 143 32 11 23 27 13 2 52 11 21 0 13 5 23 -0.77 7 0 0 11 58 37 15 11 38.5 40 144 31 11 9 19 12 48 30 11 6 52 12 51 0 -0.77 8 0 0 11 45 1 15 11 43.6 41 145 30 10 55 49 12 34 46 10 53 23 12 37 16 -0.77 9 0 0 11 32 3 15 11 48.8 42 146 29 10 42 58 12 21 42 10 40 32 12 24 12 -0.77 10 0 0 11 19 44 15 11 54.1 42 147 28 10 30 45 12 9 17 10 28 19 12 11 46 -0.78 11 0 0 11 8 5 15 11 59.4 43 148 27 10 19 11 11 57 32 10 16 46 12 0 0 -0.78 12 0 0 10 57 4 15 12 4.8 44 148 26 10 8 16 11 46 25 10 5 51 11 48 54 -0.78 13 0 0 10 46 43 15 12 10.3 44 149 25 9 58 0 11 35 59 9 55 35 11 38 27 -0.78 14 0 0 10 37 1 15 12 15.8 45 150 24 9 48 23 11 26 12 9 45 58 11 28 40 -0.78 15 0 0 10 27 59 15 12 21.4 46 151 23 9 39 25 11 17 5 9 37 1 11 19 33 -0.78 16 0 0 10 19 36 15 12 27.0 46 152 22 9 31 7 11 8 38 9 28 42 11 11 6 -0.78 17 0 0 10 11 53 15 12 32.7 47 153 21 9 23 27 11 0 51 9 21 3 11 3 19 -0.78 18 0 0 10 4 49 15 12 38.5 47 155 20 9 16 27 10 53 44 9 14 3 10 56 11 -0.78 19 0 0 9 58 26 15 12 44.2 48 156 19 9 10 7 10 47 17 9 7 43 10 49 44 -0.78 20 0 0 9 52 42 15 12 50.1 48 157 18 9 4 26 10 41 30 9 2 2 10 43 57 -0.78 21 0 0 9 47 38 15 12 55.9 49 158 17 8 59 24 10 36 24 8 57 0 10 38 50 -0.78 22 0 0 9 43 13 15 13 1.8 49 159 16 8 55 2 10 31 57 8 52 38 10 34 24 -0.78 23 0 0 9 39 29 15 13 7.8 50 160 15 8 51 19 10 28 11 8 48 56 10 30 38 -0.78 24 0 0 9 36 25 15 13 13.7 50 162 14 8 48 17 10 25 5 8 45 53 10 27 32 -0.78 25 0 0 9 34 0 15 13 19.7 50 163 13 8 45 53 10 22 40 8 43 30 10 25 6 -0.78 26 0 0 9 32 16 15 13 25.8 51 164 12 8 44 10 10 20 54 8 41 47 10 23 21 -0.78 27 0 0 9 31 12 15 13 31.8 51 166 11 8 43 6 10 19 50 8 40 43 10 22 16 -0.78 28 0 0 9 30 48 15 13 37.9 51 167 10 8 42 42 10 19 25 8 40 19 10 21 52 -0.78 29 0 0 9 31 3 15 13 44.0 51 169 9 8 42 58 10 19 41 8 40 34 10 22 8 -0.78 30 0 0 9 31 59 15 13 50.1 52 170 8 8 43 53 10 20 38 8 41 30 10 23 4 -0.78 31 0 0 9 33 35 15 13 56.2 52 171 7 8 45 28 10 22 15 8 43 5 10 24 41 -0.78 32 0 0 9 35 51 15 14 2.4 52 173 6 8 47 43 10 24 32 8 45 20 10 26 58 -0.79 33 0 0 9 38 47 15 14 8.5 52 174 5 8 50 37 10 27 30 8 48 14 10 29 56 -0.79 34 0 0 9 42 24 15 14 14.7 52 176 4 8 54 12 10 31 8 8 51 48 10 33 34 -0.79 35 0 0 9 46 40 15 14 20.8 52 177 3 8 58 26 10 35 26 8 56 2 10 37 53 -0.79 36 0 0 9 51 36 15 14 27.0 52 179 2 9 3 19 10 40 25 9 0 56 10 42 52 -0.79 37 0 0 9 57 12 15 14 33.1 52 180 1 9 8 53 10 46 4 9 6 29 10 48 31 -0.79 38 0 0 10 3 29 15 14 39.3 52 182 0 9 15 6 10 52 24 9 12 42 10 54 51 -0.79 39 0 0 10 10 25 15 14 45.4 51 183 -1 9 21 58 10 59 24 9 19 34 11 1 51 -0.79 40 0 0 10 18 1 15 14 51.6 51 184 -2 9 29 31 11 7 4 9 27 6 11 9 32 -0.79 41 0 0 10 26 17 15 14 57.7 51 186 -3 9 37 42 11 15 24 9 35 18 11 17 52 -0.79 42 0 0 10 35 13 15 15 3.8 51 187 -4 9 46 34 11 24 25 9 44 9 11 26 53 -0.79 43 0 0 10 44 48 15 15 9.9 50 189 -5 9 56 4 11 34 5 9 53 39 11 36 34 -0.79 44 0 0 10 55 3 15 15 16.0 50 190 -6 10 6 14 11 44 26 10 3 49 11 46 55 -0.79 45 0 0 11 5 58 15 15 22.0 50 191 -7 10 17 4 11 55 26 10 14 38 11 57 56 -0.79 46 0 0 11 17 33 15 15 28.1 49 193 -8 10 28 32 12 7 7 10 26 6 12 9 36 -0.79 47 0 0 11 29 46 15 15 34.0 49 194 -9 10 40 40 12 19 27 10 38 13 12 21 57 -0.79 48 0 0 11 42 39 15 15 40.0 48 195 -10 10 53 26 12 32 27 10 51 0 12 34 57 -0.79 49 0 0 11 56 12 15 15 45.9 48 196 -11 11 6 52 12 46 6 11 4 25 12 48 36 -0.79 50 0 0 12 10 23 15 15 51.8 47 198 -12 11 20 56 13 0 25 11 18 29 13 2 55 -0.79 51 0 0 12 25 13 15 15 57.7 47 199 -13 11 35 39 13 15 22 11 33 11 13 17 54 -0.79 52 0 0 12 40 42 15 16 3.5 46 200 -14 11 51 0 13 30 59 11 48 32 13 33 31 -0.79 53 0 0 12 56 50 15 16 9.2 46 201 -15 12 6 59 13 47 15 12 4 31 13 49 47 -0.79 54 0 0 13 13 36 15 16 14.9 45 202 -16 12 23 37 14 4 10 12 21 8 14 6 42 -0.78 55 0 0 13 31 0 15 16 20.6 44 203 -17 12 40 53 14 21 43 12 38 24 14 24 16 -0.78 56 0 0 13 49 2 15 16 26.1 44 204 -18 12 58 46 14 39 54 12 56 16 14 42 27 -0.78 57 0 0 14 7 42 15 16 31.7 43 205 -19 13 17 17 14 58 43 13 14 47 15 1 17 -0.78 58 0 0 14 26 59 15 16 37.1 42 206 -20 13 36 25 15 18 11 13 33 54 15 20 45 -0.78 59 0 0 14 46 54 15 16 42.5 42 207 -21 13 56 10 15 38 15 13 53 39 15 40 50 -0.78 60 0 0 15 7 25 15 16 47.8 41 208 -22 14 16 31 15 58 57 14 14 0 16 1 32 -0.78 61 0 0 15 28 33 15 16 53.1 40 209 -23 14 37 29 16 20 16 14 34 57 16 22 51 -0.78 62 0 0 15 50 17 15 16 58.3 39 210 -24 14 59 3 16 42 11 14 56 30 16 44 47 -0.78 63 0 0 16 12 38 15 17 3.4 39 210 -25 15 21 12 17 4 42 15 18 39 17 7 19 -0.78 64 0 0 16 35 33 15 17 8.4 38 211 -26 15 43 57 17 27 49 15 41 24 17 30 26 -0.78 65 0 0 16 59 4 15 17 13.3 37 212 -27 16 7 17 17 51 31 16 4 43 17 54 9 -0.78 66 0 0 17 23 9 15 17 18.1 36 213 -28 16 31 11 18 15 48 16 28 36 18 18 26 -0.78 67 0 0 17 47 49 15 17 22.9 35 213 -29 16 55 39 18 40 39 16 53 3 18 43 18 -0.78 68 0 0 18 13 1 15 17 27.5 34 214 -30 17 20 40 19 6 4 17 18 4 19 8 44 -0.78 69 0 0 18 38 48 15 17 32.0 33 215 -31 17 46 14 19 32 3 17 43 38 19 34 43 -0.78 70 0 0 19 5 6 15 17 36.5 32 216 -31 18 12 21 19 58 34 18 9 44 20 1 15 -0.78 71 0 0 19 31 57 15 17 40.8 31 216 -32 18 38 59 20 25 37 18 36 22 20 28 19 -0.78 72 0 0 19 59 19 15 17 45.0 31 217 -33 19 6 9 20 53 12 19 3 31 20 55 54 -0.78 73 0 0 20 27 11 15 17 49.1 30 217 -34 19 33 49 21 21 17 19 31 10 21 24 0 -0.78 74 0 0 20 55 34 15 17 53.1 29 218 -35 20 1 59 21 49 53 19 59 19 21 52 36 -0.78 75 0 0 21 24 25 15 17 57.0 28 219 -36 20 30 38 22 18 58 20 27 58 22 21 42 -0.78 76 0 0 21 53 46 15 18 0.7 27 219 -37 20 59 45 22 48 31 20 57 5 22 51 16 -0.78 77 0 0 22 23 34 15 18 4.3 26 220 -37 21 29 21 23 18 32 21 26 39 23 21 18 -0.78 78 0 0 22 53 48 15 18 7.8 25 220 -38 21 59 23 23 49 0 21 56 41 23 51 47 -0.78 79 0 0 23 24 29 15 18 11.2 24 221 -39 22 29 51 24 19 55 22 27 8 24 22 42 -0.78 80 0 0 23 55 35 15 18 14.4 23 222 -40 23 0 44 24 51 14 22 58 1 24 54 2 -0.78 81 0 0 24 27 5 15 18 17.5 22 222 -40 23 32 1 25 22 58 23 29 17 25 25 47 -0.78 82 0 0 24 58 59 15 18 20.5 21 223 -41 24 3 42 25 55 5 24 0 57 25 57 54 -0.78 83 0 0 25 31 15 15 18 23.3 20 223 -42 24 35 44 26 27 34 24 33 0 26 30 24 -0.78 84 0 0 26 3 52 15 18 26.0 19 224 -43 25 8 9 27 0 24 25 5 23 27 3 15 -0.78 85 0 0 26 36 49 15 18 28.6 18 224 -43 25 40 53 27 33 34 25 38 7 27 36 25 -0.78 86 0 0 27 10 5 15 18 31.0 17 225 -44 26 13 57 28 7 3 26 11 10 28 9 55 -0.78 87 0 0 27 43 38 15 18 33.2 16 225 -44 26 47 18 28 40 50 26 44 31 28 43 42 -0.78 88 0 0 28 17 29 15 18 35.3 15 226 -45 27 20 56 29 14 54 27 18 8 29 17 47 -0.78 89 0 0 28 51 35 15 18 37.3 14 226 -45 27 54 50 29 49 13 27 52 2 29 52 7 -0.78 90 0 0 29 25 56 15 18 39.1 13 227 -46 28 28 59 30 23 47 28 26 10 30 26 41 -0.79 91 0 0 30 0 31 15 18 40.8 11 227 -46 29 3 22 30 58 33 29 0 32 31 1 28 -0.79 92 0 0 30 35 17 15 18 42.3 10 228 -47 29 37 57 31 33 32 29 35 6 31 36 27 -0.79 93 0 0 31 10 14 15 18 43.7 9 229 -47 30 12 43 32 8 40 30 9 52 32 11 37 -0.79 94 0 0 31 45 21 15 18 44.9 8 229 -48 30 47 38 32 43 58 30 44 47 32 46 56 -0.79 95 0 0 32 20 35 15 18 46.0 7 230 -48 31 22 42 33 19 24 31 19 50 33 22 22 -0.79 96 0 0 32 55 57 15 18 46.9 6 230 -48 31 57 53 33 54 57 31 55 1 33 57 55 -0.80 97 0 0 33 31 24 15 18 47.7 5 231 -49 32 33 10 34 30 34 32 30 17 34 33 33 -0.80 98 0 0 34 6 55 15 18 48.4 4 231 -49 33 8 31 35 6 16 33 5 38 35 9 15 -0.81 99 0 0 34 42 29 15 18 48.9 3 232 -49 33 43 56 35 42 0 33 41 2 35 45 0 -0.82 100 0 0 35 18 5 15 18 49.3 2 232 -49 34 19 23 36 17 45 34 16 29 36 20 45 -0.84 101 0 0 35 53 41 15 18 49.5 1 233 -50 34 54 50 36 53 30 34 51 56 36 56 30 -0.89 102 0 0 36 29 15 15 18 49.6 0 234 -50 35 30 17 .. .. .. 35 27 22 .. .. .. -1.33 Uncertainty in time = +/- 1 secs Prediction of 2023 Aug 27.0 Data for the target star ------------------------ * name: TYC 6856-01792-1 * constellation : Sagittarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 18 24 56.4740 DE: -28 24 05.895 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 18 24 56.4739 DE: -28 24 05.895 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 10.8 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (196) Philomela asteroid class: approx. diameter [km]: 140 approx. diameter ["]: 0.065 distance from Earth [AU]: 2.96030 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#132 date of fit: 2023 Aug 22 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): 0.006", 0.001", 95.401° remarks: * orbital elements for (196)Philomela : Mean anomaly = 18.3898478829 deg Arg. of pericenter = 203.5777409567 deg Long. of node = 72.2992679038 deg Inclination = 7.2629558847 deg Eccentricity = 0.0147109885 Semimajor axis = 3.1127450643 AU Perihelion dist = 3.0669535074 AU Mag: H = 6.74, G = 0.15 Epoch of elements : MJD 60219.63500000 TDT (2023 Oct 02.6350) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#1322023Aug22,7.65,2023,10,2,15.237844,-0.046476,0.615764,10.310299,0.777306,0.005766,0.000236,0.000000,0.000000 36.9577,-28.3899,-51.22,-3.64,False TYC 6856-01792-1,18.41568725,-28.4016376,0.00,10.82,0.00,0.0,4,,18.44052112,-28.3898855,1.80,0.00,0,0,0 196,Philomela,12.39,140.100,2.9603,0,0,2.321,2.31,,8.0,0 0,18.2759,2023,10,2,203.5777,72.2993,7.2630,0.01471,3.11275,3.06695,6.63,5.0,0.15 1.025,0.0057,0.0013,95,0.0058,Known errors,-1.00,0,-1,-1 20231002_1792-1,60183.00 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Aug 26, 23:54 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org