IOTA/IOTA-ES occultation update for (385) Ilmatar / TYC 2919-01862-1 event on 2022 Nov 10, 17:33 UT Visible from N Russia Summary ------- On 2022 Nov 10 UT, the 82.1 km diameter asteroid (385) Ilmatar will occult a 11.2 mag star in the constellation Auriga for observers along a path across N Russia. In the case of an occultation, the combined light of the asteroid and the star will drop by 1.44 mag to 12.28 mag (the magnitude of the asteroid) for at most 10.590 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: 2022 Nov 10, 17:20 - 2022 Nov 10, 17:47 * geocentric midpoint of event [JD]: 2459894.23180912 * magnitude of target star: 11.18 * magnitude drop [mag]: 1.44 * estimated maximum duration [s]: 10.590 * Moon: 95 % sunlit, 21° distance * Sun: 136° distance * rough path description: N Russia The occultation path -------------------- * approximate projected width [km]: 85 * 1 sigma uncertainty interval [path widths]: +/- 0.25 * 1 sigma uncertainty interval [seconds]: +/- 3.5 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.023, +/- 0.003) * 1 sigma uncertainty ellipse (major, minor, PA): (0.023", 0.002", 93°) * approx speed of asteroid's shadow [km/s]: 7.7508 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 2919-01862-1 by 385 Ilmatar on 2022 Nov 10 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 ' " Longitude Longitude Longitude Longitude .. .. .. -18 0 0 .. .. .... .. .. .. ... .. .. -149 36 25 ... .. .. -149 53 20 .... -150 4 32 -17 0 0 17 20 36.7 1 315 27 -149 31 10 -150 37 42 -149 14 16 -150 54 21 .... -151 4 42 -16 0 0 17 20 37.3 3 316 26 -150 31 51 -151 37 21 -150 15 14 -151 53 45 -0.24 -152 3 19 -15 0 0 17 20 38.4 4 316 25 -151 30 57 -152 35 30 -151 14 34 -152 51 40 -0.24 -153 0 30 -14 0 0 17 20 40.0 5 316 24 -152 28 35 -153 32 15 -152 12 26 -153 48 12 -0.24 -153 56 21 -13 0 0 17 20 42.1 7 316 23 -153 24 50 -154 27 43 -153 8 54 -154 43 28 -0.24 -154 50 59 -12 0 0 17 20 44.5 8 317 22 -154 19 50 -155 21 59 -154 4 6 -155 37 33 -0.24 -155 44 27 -11 0 0 17 20 47.4 9 317 21 -155 13 40 -156 15 7 -154 58 6 -156 30 31 -0.24 -156 36 52 -10 0 0 17 20 50.8 11 317 20 -156 6 24 -157 7 13 -155 50 59 -157 22 28 -0.24 -157 28 17 - 9 0 0 17 20 54.5 12 317 19 -156 58 6 -157 58 22 -156 42 51 -158 13 28 -0.24 -158 18 47 - 8 0 0 17 20 58.6 13 317 18 -157 48 52 -158 48 36 -157 33 45 -159 3 35 -0.24 -159 8 26 - 7 0 0 17 21 3.2 14 317 16 -158 38 45 -159 38 0 -158 23 46 -159 52 52 -0.24 -159 57 16 - 6 0 0 17 21 8.1 16 317 15 -159 27 49 -160 26 37 -159 12 56 -160 41 23 -0.24 -160 45 22 - 5 0 0 17 21 13.3 17 317 14 -160 16 7 -161 14 31 -160 1 20 -161 29 11 -0.24 -161 32 46 - 4 0 0 17 21 19.0 18 317 13 -161 3 42 -162 1 45 -160 49 1 -162 16 19 -0.24 -162 19 32 - 3 0 0 17 21 24.9 19 317 12 -161 50 38 -162 48 21 -161 36 2 -163 2 50 -0.24 -163 5 42 - 2 0 0 17 21 31.3 21 317 11 -162 36 57 -163 34 22 -162 22 26 -163 48 47 -0.24 -163 51 19 - 1 0 0 17 21 37.9 22 317 10 -163 22 42 -164 19 51 -163 8 15 -164 34 13 -0.24 -164 36 25 0 0 0 17 21 45.0 23 317 9 -164 7 55 -165 4 51 -163 53 31 -165 19 9 -0.24 -165 21 3 1 0 0 17 21 52.3 24 317 8 -164 52 39 -165 49 23 -164 38 18 -166 3 38 -0.24 Latitude Latitude Latitude Latitude -167 0 0 3 15 5 17 22 10.0 27 317 6 3 54 3 2 36 18 4 13 45 2 16 49 -0.23 -168 0 0 4 38 14 17 22 21.6 29 317 5 5 17 32 3 59 8 5 37 24 3 39 30 -0.24 -169 0 0 6 2 14 17 22 34.0 30 316 4 6 41 50 5 22 49 7 1 52 5 3 2 -0.24 -170 0 0 7 26 57 17 22 47.0 32 316 2 8 6 51 6 47 15 8 27 2 6 27 19 -0.24 -171 0 0 8 52 18 17 23 0.8 34 316 1 9 32 30 8 12 19 9 52 50 7 52 15 -0.24 -172 0 0 10 18 11 17 23 15.1 35 315 0 10 58 38 9 37 56 11 19 7 9 17 43 -0.24 -173 0 0 11 44 28 17 23 30.1 37 315 -2 12 25 11 11 3 58 12 45 47 10 43 38 -0.24 -174 0 0 13 11 2 17 23 45.7 39 315 -3 13 52 0 12 30 18 14 12 44 12 9 51 -0.24 -175 0 0 14 37 48 17 24 1.8 40 314 -4 15 18 59 13 56 50 15 39 50 13 36 17 -0.25 -176 0 0 16 4 36 17 24 18.5 42 313 -6 16 46 0 15 23 27 17 6 57 15 2 47 -0.25 -177 0 0 17 31 21 17 24 35.6 44 313 -7 18 12 56 16 50 0 18 33 59 16 29 15 -0.25 -178 0 0 18 57 55 17 24 53.2 45 312 -8 19 39 40 18 16 24 20 0 49 17 55 34 -0.25 -179 0 0 20 24 10 17 25 11.2 47 311 -9 21 6 5 19 42 31 21 27 18 19 21 37 -0.25 -180 0 0 21 50 0 17 25 29.6 48 310 -10 22 32 2 21 8 13 22 53 20 20 47 15 -0.25 179 0 0 23 15 17 17 25 48.3 50 309 -12 23 57 26 22 33 24 24 18 47 22 12 23 -0.25 178 0 0 24 39 55 17 26 7.2 51 308 -13 25 22 9 23 57 57 25 43 33 23 36 54 -0.26 177 0 0 26 3 47 17 26 26.4 53 307 -14 26 46 5 25 21 45 27 7 31 25 0 40 -0.26 176 0 0 27 26 46 17 26 45.7 54 306 -15 28 9 7 26 44 42 28 30 34 26 23 36 -0.26 175 0 0 28 48 47 17 27 5.1 56 304 -16 29 31 8 28 6 42 29 52 36 27 45 35 -0.26 174 0 0 30 9 43 17 27 24.6 57 303 -17 30 52 4 29 27 38 31 13 32 29 6 32 -0.26 173 0 0 31 29 29 17 27 44.2 59 301 -18 32 11 48 30 47 26 32 33 15 30 26 21 -0.26 172 0 0 32 47 59 17 28 3.7 60 300 -19 33 30 16 32 6 0 33 51 41 31 44 56 -0.27 171 0 0 34 5 10 17 28 23.2 61 298 -20 34 47 23 33 23 15 35 8 46 33 2 14 -0.27 170 0 0 35 20 57 17 28 42.5 62 296 -21 36 3 3 34 39 8 36 24 23 34 18 10 -0.27 169 0 0 36 35 16 17 29 1.8 64 294 -22 37 17 15 35 53 34 37 38 31 35 32 39 -0.27 168 0 0 37 48 3 17 29 20.8 65 291 -23 38 29 53 37 6 29 38 51 5 36 45 39 -0.27 167 0 0 38 59 15 17 29 39.7 66 289 -23 39 40 56 38 17 52 40 2 3 37 57 7 -0.27 166 0 0 40 8 51 17 29 58.3 67 286 -24 40 50 20 39 27 39 41 11 21 39 6 59 -0.27 165 0 0 41 16 47 17 30 16.6 68 283 -25 41 58 4 40 35 47 42 18 59 40 15 14 -0.28 164 0 0 42 23 3 17 30 34.7 69 280 -26 43 4 6 41 42 16 43 24 54 41 21 50 -0.28 163 0 0 43 27 36 17 30 52.4 69 277 -26 44 8 25 42 47 5 44 29 6 42 26 45 -0.28 162 0 0 44 30 27 17 31 9.9 70 274 -27 45 11 0 43 50 11 45 31 32 43 29 59 -0.28 161 0 0 45 31 34 17 31 27.0 71 270 -28 46 11 50 44 51 34 46 32 14 44 31 31 -0.28 160 0 0 46 30 58 17 31 43.7 71 267 -28 47 10 56 45 51 15 47 31 11 45 31 21 -0.28 159 0 0 47 28 38 17 32 0.1 72 263 -29 48 8 18 46 49 14 48 28 24 46 29 28 -0.28 158 0 0 48 24 36 17 32 16.1 72 259 -29 49 3 57 47 45 31 49 23 52 47 25 54 -0.29 157 0 0 49 18 52 17 32 31.7 73 255 -30 49 57 52 48 40 6 50 17 38 48 20 39 -0.29 156 0 0 50 11 26 17 32 46.9 73 251 -30 50 50 7 49 33 1 51 9 42 49 13 44 -0.29 155 0 0 51 2 22 17 33 1.8 73 247 -31 51 40 41 50 24 17 52 0 5 50 5 11 -0.29 154 0 0 51 51 39 17 33 16.3 74 243 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141 0 0 60 19 6 17 35 52.0 71 197 -35 60 52 14 59 46 8 61 8 59 59 29 35 -0.30 140 0 0 60 49 12 17 36 1.8 71 194 -35 61 21 58 60 16 35 61 38 32 60 0 12 -0.30 139 0 0 61 18 13 17 36 11.3 71 192 -35 61 50 38 60 45 57 62 7 1 60 29 44 -0.30 138 0 0 61 46 11 17 36 20.5 70 189 -35 62 18 15 61 14 15 62 34 27 60 58 13 -0.30 137 0 0 62 13 8 17 36 29.5 70 187 -35 62 44 51 61 41 32 63 0 53 61 25 40 -0.30 136 0 0 62 39 6 17 36 38.3 70 185 -35 63 10 29 62 7 50 63 26 21 61 52 8 -0.30 135 0 0 63 4 7 17 36 46.8 69 183 -35 63 35 11 62 33 11 63 50 53 62 17 38 -0.30 134 0 0 63 28 13 17 36 55.0 69 181 -36 63 58 58 62 57 36 64 14 30 62 42 13 -0.30 133 0 0 63 51 27 17 37 3.1 68 179 -36 64 21 52 63 21 8 64 37 15 63 5 54 -0.29 132 0 0 64 13 49 17 37 11.0 68 177 -36 64 43 56 63 43 49 64 59 9 63 28 44 -0.29 131 0 0 64 35 22 17 37 18.6 68 175 -36 65 5 11 64 5 39 65 20 15 63 50 44 -0.29 130 0 0 64 56 7 17 37 26.1 67 173 -36 65 25 38 64 26 42 65 40 33 64 11 55 -0.29 129 0 0 65 16 6 17 37 33.3 67 171 -36 65 45 20 64 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12 42 68 57 9 -0.28 51 0 0 69 25 17 17 43 12.8 42 80 -33 69 50 35 69 0 2 70 3 22 68 47 20 -0.28 50 0 0 69 15 16 17 43 16.7 42 79 -32 69 40 45 68 49 52 69 53 36 68 37 5 -0.28 49 0 0 69 4 49 17 43 20.6 41 78 -32 69 30 28 68 39 14 69 43 25 68 26 22 -0.28 48 0 0 68 53 54 17 43 24.5 41 77 -32 69 19 44 68 28 9 69 32 46 68 15 11 -0.28 47 0 0 68 42 31 17 43 28.4 41 76 -32 69 8 32 68 16 35 69 21 40 68 3 32 -0.28 46 0 0 68 30 39 17 43 32.4 40 75 -32 68 56 51 68 4 31 69 10 5 67 51 22 -0.28 45 0 0 68 18 17 17 43 36.4 40 74 -32 68 44 41 67 51 57 68 58 1 67 38 42 -0.28 44 0 0 68 5 23 17 43 40.5 39 73 -31 68 32 0 67 38 51 68 45 26 67 25 30 -0.28 43 0 0 67 51 58 17 43 44.6 39 72 -31 68 18 47 67 25 12 68 32 20 67 11 45 -0.28 42 0 0 67 37 59 17 43 48.7 38 71 -31 68 5 2 67 11 0 68 18 42 66 57 26 -0.28 41 0 0 67 23 26 17 43 52.9 38 70 -31 67 50 43 66 56 14 68 4 29 66 42 33 -0.28 40 0 0 67 8 17 17 43 57.1 38 69 -31 67 35 48 66 40 51 67 49 42 66 27 3 -0.28 39 0 0 66 52 32 17 44 1.3 37 68 -31 67 20 18 66 24 51 67 34 19 66 10 56 -0.28 38 0 0 66 36 9 17 44 5.6 37 67 -30 67 4 10 66 8 13 67 18 19 65 54 10 -0.28 37 0 0 66 19 6 17 44 9.9 36 66 -30 66 47 22 65 50 54 67 1 40 65 36 44 -0.28 36 0 0 66 1 22 17 44 14.3 36 65 -30 66 29 55 65 32 55 66 44 20 65 18 36 -0.28 35 0 0 65 42 56 17 44 18.7 35 64 -30 66 11 46 65 14 12 66 26 20 64 59 45 -0.28 34 0 0 65 23 46 17 44 23.2 35 63 -30 65 52 53 64 54 45 66 7 36 64 40 10 -0.28 33 0 0 65 3 51 17 44 27.7 34 62 -29 65 33 15 64 34 33 65 48 7 64 19 49 -0.28 32 0 0 64 43 8 17 44 32.2 34 61 -29 65 12 51 64 13 32 65 27 52 63 58 39 -0.28 31 0 0 64 21 37 17 44 36.8 33 60 -29 64 51 38 63 51 42 65 6 48 63 36 39 -0.28 30 0 0 63 59 14 17 44 41.4 33 59 -28 64 29 34 63 29 0 64 44 54 63 13 48 -0.28 29 0 0 63 35 58 17 44 46.1 32 58 -28 64 6 38 63 5 25 64 22 8 62 50 3 -0.28 28 0 0 63 11 48 17 44 50.8 31 57 -28 63 42 48 62 40 54 63 58 28 62 25 23 -0.28 27 0 0 62 46 40 17 44 55.5 31 56 -28 63 18 1 62 15 26 63 33 52 61 59 44 -0.28 26 0 0 62 20 33 17 45 0.3 30 55 -27 62 52 15 61 48 58 63 8 17 61 33 6 -0.28 25 0 0 61 53 24 17 45 5.1 30 54 -27 62 25 28 61 21 28 62 41 41 61 5 25 -0.28 24 0 0 61 25 11 17 45 10.0 29 54 -27 61 57 37 60 52 53 62 14 1 60 36 39 -0.27 23 0 0 60 55 52 17 45 14.9 28 53 -26 61 28 41 60 23 11 61 45 16 60 6 45 -0.27 22 0 0 60 25 23 17 45 19.8 28 52 -26 60 58 35 59 52 19 61 15 22 59 35 42 -0.27 21 0 0 59 53 42 17 45 24.8 27 51 -26 60 27 18 59 20 15 60 44 17 59 3 26 -0.27 20 0 0 59 20 47 17 45 29.7 26 50 -25 59 54 47 58 46 55 60 11 58 58 29 55 -0.27 19 0 0 58 46 34 17 45 34.7 25 49 -25 59 20 58 58 12 18 59 38 23 57 55 6 -0.27 18 0 0 58 11 0 17 45 39.7 25 48 -24 58 45 50 57 36 20 59 3 27 57 18 55 -0.27 17 0 0 57 34 3 17 45 44.6 24 47 -24 58 9 18 56 58 58 58 27 8 56 41 20 -0.27 16 0 0 56 55 39 17 45 49.6 23 46 -23 57 31 20 56 20 9 57 49 23 56 2 18 -0.27 15 0 0 56 15 46 17 45 54.5 22 46 -23 56 51 53 55 39 49 57 10 9 55 21 46 -0.27 14 0 0 55 34 19 17 45 59.4 21 45 -22 56 10 53 54 57 57 56 29 22 54 39 41 -0.27 13 0 0 54 51 16 17 46 4.3 20 44 -22 55 28 16 54 14 27 55 46 59 53 55 58 -0.27 12 0 0 54 6 34 17 46 9.1 19 43 -21 54 44 1 53 29 18 55 2 57 53 10 36 -0.27 11 0 0 53 20 9 17 46 13.8 18 42 -21 53 58 2 52 42 27 54 17 13 52 23 31 -0.27 10 0 0 52 31 57 17 46 18.5 17 41 -20 53 10 18 51 53 49 53 29 42 51 34 40 -0.27 9 0 0 51 41 57 17 46 23.0 16 41 -19 52 20 45 51 3 21 52 40 23 50 43 59 -0.27 8 0 0 50 50 4 17 46 27.4 15 40 -19 51 29 19 50 11 2 51 49 11 49 51 26 -0.27 7 0 0 49 56 16 17 46 31.6 14 39 -18 50 35 57 49 16 47 50 56 3 48 56 58 -0.28 6 0 0 49 0 29 17 46 35.6 13 38 -17 49 40 37 48 20 34 50 0 56 48 0 31 -0.28 5 0 0 48 2 41 17 46 39.5 12 38 -16 48 43 16 47 22 20 49 3 49 47 2 5 -0.28 4 0 0 47 2 50 17 46 43.0 11 37 -16 47 43 51 46 22 3 48 4 37 46 1 35 -0.28 3 0 0 46 0 53 17 46 46.3 10 36 -15 46 42 19 45 19 40 47 3 18 44 59 0 -0.28 2 0 0 44 56 48 17 46 49.3 8 35 -14 45 38 39 44 15 11 45 59 51 43 54 18 -0.29 1 0 0 43 50 34 17 46 52.0 7 35 -13 44 32 50 43 8 33 44 54 13 42 47 28 -0.30 0 0 0 42 42 9 17 46 54.3 6 34 -12 43 24 48 41 59 45 43 46 24 41 38 28 -0.31 - 1 0 0 41 31 33 17 46 56.1 4 33 -11 42 14 35 40 48 47 42 36 22 40 27 19 -0.33 - 2 0 0 40 18 46 17 46 57.5 3 33 -10 41 2 10 39 35 39 41 24 8 39 14 0 -0.37 - 3 0 0 39 3 49 17 46 58.3 1 32 -9 39 47 33 38 20 21 40 9 41 37 58 32 -0.51 Uncertainty in time = +/- 4 secs Prediction of 2022 Oct 17.0 Data for the target star ------------------------ * name: TYC 2919-01862-1 * constellation : Auriga * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 05 49 26.3920 DE: +42 27 14.835 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 05 49 26.3921 DE: +42 27 14.836 * position source: Gaia EDR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 11.2 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (385) Ilmatar asteroid class: approx. diameter [km]: 82 approx. diameter ["]: 0.055 distance from Earth [AU]: 2.05940 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#118 date of fit: 2022 Sep 21 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): 0.023", 0.002", 92.878° remarks: * orbital elements for (385)Ilmatar : Mean anomaly = 275.1284147964 deg Arg. of pericenter = 189.1809510274 deg Long. of node = 344.8542242883 deg Inclination = 13.5827980673 deg Eccentricity = 0.1261011004 Semimajor axis = 2.8463614053 AU Perihelion dist = 2.4874321000 AU Mag: H = 7.63, G = 0.15 Epoch of elements : MJD 59893.73159722 TDT (2022 Nov 10.7316) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#1182022Sep21,10.59,2022,11,10,17.563419,0.175833,0.208643,-3.341957,2.823062,-0.003750,-0.001525,0.000001,0.000000 134.4636,42.4602,-87.47,-17.28,False TYC 2919-01862-1,5.82399780,42.4541210,0.00,11.18,0.00,0.0,0,,5.85136797,42.4601869,1.44,0.00,0,0,0 385,Ilmatar,12.28,82.1,2.0594,0,0,-1.290,12.05,,3.6,0 0,274.9783,2022,11,10,189.1810,344.8542,13.5828,0.12610,2.84636,2.48743,7.64,5.0,0.15 1.252,0.0227,0.0023,93,0.0138,Known errors,-1.00,-1,-1,-1 20221110_1862-1,59868.97 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2022 Oct 16, 23:12 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org