IOTA/IOTA-ES occultation update for (349) Dembowska / UCAC4 593-011702 event on 2023 Feb 17, 10:34 UT Visible from Japan, China Summary ------- On 2023 Feb 17 UT, the 147.5 km diameter asteroid (349) Dembowska will occult a 12.4 mag star in the constellation Taurus for observers along a path across Japan, China. In the case of an occultation, the combined light of the asteroid and the star will drop by 0.32 mag to 11.27 mag (the magnitude of the asteroid) for at most 11.230 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 Feb 17, 10:26 - 2023 Feb 17, 10:42 * geocentric midpoint of event [JD]: 2459992.94079287 * magnitude of target star: 12.42 * magnitude drop [mag]: 0.32 * estimated maximum duration [s]: 11.230 * Moon: 12 % sunlit, 138° distance * Sun: 97° distance * rough path description: Japan, China Additional comments ------------------- low mag drop The occultation path -------------------- * approximate projected width [km]: 155 * 1 sigma uncertainty interval [path widths]: +/- 0.07 * 1 sigma uncertainty interval [seconds]: +/- 3.1 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.022, +/- 0.007) * 1 sigma uncertainty ellipse (major, minor, PA): (0.023", 0.001", 71°) * approx speed of asteroid's shadow [km/s]: 13.1330 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 593-011702 by 349 Dembowska on 2023 Feb 17 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 22 0 0 12 30 34 10 27 2.3 0 61 65 .. .. .. 13 19 16 .. .. .. 13 26 29 .... 23 0 0 13 3 56 10 27 2.4 1 61 65 12 15 26 13 52 42 12 8 17 13 59 57 -0.33 24 0 0 13 37 26 10 27 2.8 3 61 64 12 48 52 14 26 17 12 41 42 14 33 32 -0.33 25 0 0 14 11 4 10 27 3.3 4 61 64 13 22 25 14 59 58 13 15 14 15 7 14 -0.34 26 0 0 14 44 47 10 27 4.0 5 62 63 13 56 5 15 33 46 13 48 54 15 41 2 -0.34 27 0 0 15 18 36 10 27 5.0 6 62 63 14 29 50 16 7 38 14 22 38 16 14 55 -0.34 28 0 0 15 52 29 10 27 6.1 7 62 62 15 3 40 16 41 34 14 56 28 16 48 52 -0.34 29 0 0 16 26 25 10 27 7.4 8 62 62 15 37 33 17 15 34 15 30 20 17 22 52 -0.34 30 0 0 17 0 23 10 27 8.9 9 63 61 16 11 29 17 49 34 16 4 16 17 56 53 -0.34 31 0 0 17 34 23 10 27 10.6 10 63 60 16 45 26 18 23 36 16 38 12 18 30 55 -0.34 32 0 0 18 8 22 10 27 12.5 11 63 59 17 19 23 18 57 37 17 12 9 19 4 56 -0.34 33 0 0 18 42 19 10 27 14.6 13 64 59 17 53 19 19 31 36 17 46 5 19 38 56 -0.34 34 0 0 19 16 15 10 27 16.8 14 64 58 18 27 13 20 5 33 18 19 58 20 12 53 -0.34 35 0 0 19 50 7 10 27 19.3 15 64 57 19 1 4 20 39 26 18 53 49 20 46 46 -0.34 36 0 0 20 23 54 10 27 21.9 16 65 56 19 34 51 21 13 14 19 27 36 21 20 34 -0.34 37 0 0 20 57 36 10 27 24.6 17 65 56 20 8 32 21 46 57 20 1 18 21 54 16 -0.34 38 0 0 21 31 12 10 27 27.6 18 66 55 20 42 8 22 20 32 20 34 53 22 27 52 -0.34 39 0 0 22 4 40 10 27 30.7 19 66 54 21 15 36 22 53 59 21 8 22 23 1 19 -0.34 40 0 0 22 37 59 10 27 34.0 20 66 53 21 48 56 23 27 18 21 41 42 23 34 37 -0.34 41 0 0 23 11 8 10 27 37.4 21 67 52 22 22 6 24 0 26 22 14 52 24 7 45 -0.34 42 0 0 23 44 7 10 27 41.0 22 67 51 22 55 7 24 33 23 22 47 53 24 40 42 -0.34 43 0 0 24 16 54 10 27 44.7 23 68 50 23 27 55 25 6 8 23 20 42 25 13 27 -0.34 44 0 0 24 49 28 10 27 48.6 24 68 50 24 0 32 25 38 40 23 53 18 25 45 59 -0.34 45 0 0 25 21 49 10 27 52.7 26 69 49 24 32 55 26 10 58 24 25 42 26 18 17 -0.34 46 0 0 25 53 55 10 27 56.8 27 69 48 25 5 4 26 43 2 24 57 51 26 50 19 -0.34 47 0 0 26 25 46 10 28 1.1 28 70 47 25 36 58 27 14 49 25 29 46 27 22 7 -0.34 48 0 0 26 57 21 10 28 5.6 29 70 46 26 8 36 27 46 21 26 1 25 27 53 37 -0.34 49 0 0 27 28 38 10 28 10.1 30 71 45 26 39 58 28 17 34 26 32 46 28 24 50 -0.34 50 0 0 27 59 38 10 28 14.8 31 72 44 27 11 1 28 48 30 27 3 51 28 55 45 -0.34 51 0 0 28 30 19 10 28 19.6 32 72 43 27 41 47 29 19 6 27 34 37 29 26 21 -0.34 52 0 0 29 0 40 10 28 24.5 33 73 42 28 12 13 29 49 23 28 5 4 29 56 37 -0.34 53 0 0 29 30 42 10 28 29.5 34 73 41 28 42 20 30 19 19 28 35 11 30 26 33 -0.34 54 0 0 30 0 23 10 28 34.5 35 74 40 29 12 6 30 48 55 29 4 58 30 56 7 -0.34 55 0 0 30 29 42 10 28 39.7 36 75 39 29 41 31 31 18 9 29 34 24 31 25 20 -0.34 56 0 0 30 58 40 10 28 45.0 37 75 39 30 10 34 31 47 1 30 3 28 31 54 11 -0.34 57 0 0 31 27 15 10 28 50.4 38 76 38 30 39 15 32 15 29 30 32 10 32 22 39 -0.34 58 0 0 31 55 27 10 28 55.8 39 77 37 31 7 33 32 43 35 31 0 29 32 50 44 -0.34 59 0 0 32 23 15 10 29 1.4 40 78 36 31 35 28 33 11 17 31 28 25 33 18 25 -0.34 60 0 0 32 50 40 10 29 7.0 40 78 35 32 2 59 33 38 35 31 55 57 33 45 42 -0.33 61 0 0 33 17 40 10 29 12.6 41 79 34 32 30 6 34 5 28 32 23 4 34 12 34 -0.33 62 0 0 33 44 15 10 29 18.4 42 80 33 32 56 48 34 31 56 32 49 48 34 39 1 -0.33 63 0 0 34 10 25 10 29 24.2 43 81 32 33 23 5 34 57 59 33 16 6 35 5 3 -0.33 64 0 0 34 36 9 10 29 30.0 44 82 31 33 48 57 35 23 36 33 41 59 35 30 39 -0.33 65 0 0 35 1 28 10 29 35.9 45 83 30 34 14 23 35 48 47 34 7 26 35 55 49 -0.33 66 0 0 35 26 21 10 29 41.9 46 83 29 34 39 23 36 13 32 34 32 27 36 20 33 -0.33 67 0 0 35 50 47 10 29 47.8 47 84 29 35 3 57 36 37 51 34 57 2 36 44 50 -0.33 68 0 0 36 14 47 10 29 53.9 48 85 28 35 28 4 37 1 43 35 21 11 37 8 41 -0.33 69 0 0 36 38 20 10 29 59.9 48 86 27 35 51 45 37 25 8 35 44 53 37 32 5 -0.33 70 0 0 37 1 26 10 30 6.0 49 87 26 36 14 59 37 48 6 36 8 8 37 55 2 -0.33 71 0 0 37 24 5 10 30 12.2 50 88 25 36 37 46 38 10 37 36 30 56 38 17 31 -0.33 72 0 0 37 46 17 10 30 18.3 51 89 24 37 0 6 38 32 41 36 53 17 38 39 34 -0.33 73 0 0 38 8 2 10 30 24.5 52 90 23 37 21 59 38 54 17 37 15 11 39 1 10 -0.33 74 0 0 38 29 19 10 30 30.7 53 92 23 37 43 24 39 15 27 37 36 37 39 22 18 -0.33 75 0 0 38 50 9 10 30 37.0 53 93 22 38 4 22 39 36 9 37 57 37 39 42 59 -0.33 76 0 0 39 10 32 10 30 43.2 54 94 21 38 24 53 39 56 24 38 18 9 40 3 12 -0.33 77 0 0 39 30 28 10 30 49.5 55 95 20 38 44 57 40 16 11 38 38 13 40 22 58 -0.33 78 0 0 39 49 56 10 30 55.7 56 96 19 39 4 33 40 35 31 38 57 51 40 42 17 -0.33 79 0 0 40 8 57 10 31 2.0 56 98 18 39 23 41 40 54 24 39 17 0 41 1 9 -0.33 80 0 0 40 27 30 10 31 8.3 57 99 18 39 42 23 41 12 49 39 35 43 41 19 33 -0.33 81 0 0 40 45 36 10 31 14.6 58 100 17 40 0 37 41 30 48 39 53 58 41 37 30 -0.33 82 0 0 41 3 15 10 31 20.9 59 102 16 40 18 24 41 48 19 40 11 46 41 55 0 -0.33 83 0 0 41 20 27 10 31 27.2 59 103 15 40 35 43 42 5 23 40 29 7 42 12 3 -0.33 84 0 0 41 37 12 10 31 33.5 60 104 14 40 52 36 42 22 0 40 46 0 42 28 39 -0.33 85 0 0 41 53 30 10 31 39.8 61 106 13 41 9 1 42 38 11 41 2 27 42 44 49 -0.33 86 0 0 42 9 21 10 31 46.1 61 107 13 41 25 0 42 53 54 41 18 27 43 0 31 -0.33 87 0 0 42 24 46 10 31 52.4 62 109 12 41 40 32 43 9 12 41 33 59 43 15 47 -0.33 88 0 0 42 39 44 10 31 58.7 62 111 11 41 55 37 43 24 2 41 49 6 43 30 37 -0.33 89 0 0 42 54 15 10 32 5.0 63 112 10 42 10 15 43 38 27 42 3 45 43 45 0 -0.33 90 0 0 43 8 20 10 32 11.2 64 114 10 42 24 27 43 52 25 42 17 58 43 58 57 -0.33 91 0 0 43 21 59 10 32 17.5 64 116 9 42 38 13 44 5 57 42 31 45 44 12 28 -0.33 92 0 0 43 35 12 10 32 23.8 65 118 8 42 51 32 44 19 3 42 45 5 44 25 33 -0.33 93 0 0 43 47 59 10 32 30.0 65 120 7 43 4 25 44 31 43 42 57 59 44 38 13 -0.33 94 0 0 44 0 20 10 32 36.3 66 122 6 43 16 53 44 43 58 43 10 28 44 50 27 -0.33 95 0 0 44 12 15 10 32 42.5 66 124 6 43 28 54 44 55 47 43 22 30 45 2 15 -0.33 96 0 0 44 23 45 10 32 48.7 67 126 5 43 40 30 45 7 11 43 34 7 45 13 38 -0.33 97 0 0 44 34 50 10 32 55.0 67 128 4 43 51 40 45 18 10 43 45 18 45 24 35 -0.33 98 0 0 44 45 29 10 33 1.2 68 130 3 44 2 25 45 28 43 43 56 4 45 35 8 -0.33 99 0 0 44 55 43 10 33 7.4 68 132 3 44 12 45 45 38 52 44 6 24 45 45 16 -0.33 100 0 0 45 5 32 10 33 13.5 69 134 2 44 22 39 45 48 36 44 16 19 45 54 59 -0.33 101 0 0 45 14 57 10 33 19.7 69 137 1 44 32 9 45 57 55 44 25 50 46 4 18 -0.33 102 0 0 45 23 57 10 33 25.9 69 139 1 44 41 14 46 6 50 44 34 55 46 13 12 -0.33 103 0 0 45 32 32 10 33 32.0 70 142 0 44 49 54 46 15 20 44 43 36 46 21 42 -0.33 104 0 0 45 40 43 10 33 38.1 70 144 -1 44 58 9 46 23 27 44 51 51 46 29 47 -0.33 105 0 0 45 48 29 10 33 44.2 70 147 -2 45 6 0 46 31 9 44 59 43 46 37 29 -0.33 106 0 0 45 55 51 10 33 50.4 71 150 -2 45 13 26 46 38 27 45 7 10 46 44 46 -0.33 107 0 0 46 2 49 10 33 56.4 71 152 -3 45 20 28 46 45 21 45 14 13 46 51 40 -0.33 108 0 0 46 9 24 10 34 2.5 71 155 -4 45 27 6 46 51 52 45 20 51 46 58 10 -0.33 109 0 0 46 15 34 10 34 8.6 71 158 -5 45 33 20 46 57 58 45 27 5 47 4 16 -0.33 110 0 0 46 21 21 10 34 14.6 71 161 -5 45 39 10 47 3 42 45 32 56 47 9 59 -0.33 111 0 0 46 26 44 10 34 20.7 72 164 -6 45 44 36 47 9 2 45 38 22 47 15 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39 40 43 8 22 41 33 8 43 14 58 -0.33 163 0 0 42 8 32 10 39 20.9 50 266 -44 41 24 10 42 53 7 41 17 37 42 59 43 -0.33 164 0 0 41 52 43 10 39 26.3 49 268 -44 41 8 13 42 37 25 41 1 39 42 44 3 -0.33 165 0 0 41 36 28 10 39 31.7 48 269 -45 40 51 50 42 21 17 40 45 15 42 27 56 -0.33 166 0 0 41 19 45 10 39 37.1 47 270 -46 40 35 1 42 4 42 40 28 24 42 11 22 -0.33 167 0 0 41 2 36 10 39 42.5 46 271 -47 40 17 44 41 47 41 40 11 6 41 54 22 -0.33 168 0 0 40 45 1 10 39 47.8 46 271 -48 40 0 1 41 30 12 39 53 22 41 36 55 -0.33 169 0 0 40 26 58 10 39 53.1 45 272 -48 39 41 50 41 12 18 39 35 10 41 19 1 -0.34 170 0 0 40 8 28 10 39 58.3 44 273 -49 39 23 13 40 53 56 39 16 32 41 0 41 -0.34 171 0 0 39 49 32 10 40 3.5 43 274 -50 39 4 9 40 35 8 38 57 27 40 41 54 -0.34 172 0 0 39 30 9 10 40 8.7 43 275 -51 38 44 38 40 15 52 38 37 54 40 22 39 -0.34 173 0 0 39 10 18 10 40 13.8 42 276 -52 38 24 40 39 56 10 38 17 55 40 2 58 -0.34 174 0 0 38 50 1 10 40 18.9 41 277 -53 38 4 14 39 36 0 37 57 29 39 42 50 -0.34 175 0 0 38 29 17 10 40 24.0 40 278 -53 37 43 22 39 15 24 37 36 36 39 22 15 -0.34 176 0 0 38 8 6 10 40 29.0 39 279 -54 37 22 3 38 54 21 37 15 15 39 1 13 -0.34 177 0 0 37 46 28 10 40 33.9 38 279 -55 37 0 18 38 32 51 36 53 28 38 39 44 -0.34 178 0 0 37 24 23 10 40 38.8 37 280 -56 36 38 5 38 10 54 36 31 15 38 17 49 -0.34 179 0 0 37 1 52 10 40 43.6 37 281 -57 36 15 26 37 48 31 36 8 35 37 55 26 -0.34 180 0 0 36 38 54 10 40 48.4 36 282 -58 35 52 20 37 25 40 35 45 28 37 32 37 -0.34 -179 0 0 36 15 29 10 40 53.0 35 282 -59 35 28 48 37 2 24 35 21 55 37 9 22 -0.34 -178 0 0 35 51 39 10 40 57.7 34 283 -59 35 4 50 36 38 41 34 57 56 36 45 40 -0.34 -177 0 0 35 27 22 10 41 2.2 33 284 -60 34 40 26 36 14 32 34 33 30 36 21 32 -0.34 -176 0 0 35 2 40 10 41 6.7 32 285 -61 34 15 36 35 49 57 34 8 40 35 56 58 -0.34 -175 0 0 34 37 32 10 41 11.1 31 285 -62 33 50 21 35 24 56 33 43 23 35 31 58 -0.34 -174 0 0 34 11 58 10 41 15.4 30 286 -63 33 24 41 34 59 30 33 17 42 35 6 33 -0.34 -173 0 0 33 46 0 10 41 19.6 29 287 -64 32 58 36 34 33 39 32 51 36 34 40 43 -0.35 -172 0 0 33 19 37 10 41 23.7 28 287 -65 32 32 6 34 7 22 32 25 5 34 14 28 -0.35 -171 0 0 32 52 50 10 41 27.8 28 288 -65 32 5 12 33 40 42 31 58 10 33 47 48 -0.35 -170 0 0 32 25 38 10 41 31.7 27 289 -66 31 37 54 33 13 37 31 30 51 33 20 45 -0.35 -169 0 0 31 58 4 10 41 35.5 26 289 -67 31 10 13 32 46 9 31 3 10 32 53 17 -0.35 -168 0 0 31 30 6 10 41 39.3 25 290 -68 30 42 10 32 18 17 30 35 5 32 25 26 -0.35 -167 0 0 31 1 45 10 41 42.9 24 290 -69 30 13 44 31 50 2 30 6 38 31 57 13 -0.35 -166 0 0 30 33 3 10 41 46.4 23 291 -70 29 44 56 31 21 26 29 37 49 31 28 37 -0.35 -165 0 0 30 3 59 10 41 49.8 22 291 -70 29 15 47 30 52 27 29 8 39 30 59 39 -0.35 -164 0 0 29 34 35 10 41 53.0 21 292 -71 28 46 17 30 23 8 28 39 9 30 30 20 -0.35 -163 0 0 29 4 50 10 41 56.1 20 293 -72 28 16 27 29 53 28 28 9 19 30 0 41 -0.35 -162 0 0 28 34 45 10 41 59.1 19 293 -73 27 46 18 29 23 28 27 39 9 29 30 42 -0.36 -161 0 0 28 4 21 10 42 2.0 18 294 -74 27 15 50 28 53 8 27 8 40 29 0 23 -0.36 -160 0 0 27 33 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10 23 22 3 7 -0.43 -147 0 0 20 33 13 10 42 25.6 3 300 -77 19 44 15 21 22 26 19 37 2 21 29 45 -0.47 -146 0 0 19 59 45 10 42 26.0 2 300 -77 19 10 49 20 48 58 19 3 35 20 56 17 -0.55 -145 0 0 19 26 13 10 42 26.2 1 300 -76 18 37 18 20 15 25 18 30 5 20 22 44 -0.92 -144 0 0 .. .. .... .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 19 49 7 .... Uncertainty in time = +/- 3 secs Prediction of 2023 Feb 15.9 Data for the target star ------------------------ * name: UCAC4 593-011702 * constellation : Taurus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 04 08 34.6017 DE: +28 35 50.387 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 04 08 34.6015 DE: +28 35 50.387 * 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: (349) Dembowska asteroid class: approx. diameter [km]: 148 approx. diameter ["]: 0.081 distance from Earth [AU]: 2.51090 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#129 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): 0.023", 0.001", 71.342° remarks: * orbital elements for (349)Dembowska : Mean anomaly = 60.4735049259 deg Arg. of pericenter = 344.3130917215 deg Long. of node = 32.1923733991 deg Inclination = 8.2508973535 deg Eccentricity = 0.0894597768 Semimajor axis = 2.9230650619 AU Perihelion dist = 2.6615683140 AU Mag: H = 6.04, G = 0.37 Epoch of elements : MJD 59992.44090278 TDT (2023 Feb 17.4409) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#1292023Feb07,11.23,2023,2,17,10.579029,-0.020409,0.306714,7.395791,0.499265,0.005797,0.000992,0.000000,0.000000 116.6659,28.6594,24.81,-12.00,False UCAC4 593-011702,4.14294493,28.5973298,0.00,12.42,0.00,0.0,0,,4.16668211,28.6593881,0.32,0.00,0,0,0 349,Dembowska,11.27,147.5,2.5109,0,0,1.969,1.75,,8.4,0 0,60.3866,2023,2,17,344.3131,32.1924,8.2509,0.08946,2.92307,2.66157,6.01,5.0,0.15 1.074,0.0230,0.0012,71,0.0060,Known errors,-1.00,-1,-1,-1 20230217_011702,59990.86 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Feb 15, 20:37 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org