IOTA/IOTA-ES occultation update for (1686) De Sitter / TYC 272-00753-1 event on 2023 Mar 25, 00:11 UT Visible from Europe, SW Asia Summary ------- On 2023 Mar 25 UT, the 31.0267037606879 km diameter asteroid (1686) De Sitter will occult a 9.7 mag star in the constellation Virgo for observers along a path across Europe, SW Asia. In the case of an occultation, the combined light of the asteroid and the star will drop by 6.33 mag to 16.03 mag (the magnitude of the asteroid) for at most 2.180 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: 68 * date and approx. time of event: 2023 Mar 25, 00:07 - 2023 Mar 25, 00:16 * geocentric midpoint of event [JD]: 2460028.50823546 * magnitude of target star: 9.70 * magnitude drop [mag]: 6.33 * estimated maximum duration [s]: 2.180 * Moon: 13 % sunlit, 130° distance * Sun: 172° distance * rough path description: Europe, SW Asia The occultation path -------------------- * approximate projected width [km]: 50 * 1 sigma uncertainty interval [path widths]: +/- 0.87 * 1 sigma uncertainty interval [seconds]: +/- 3.0 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.023, +/- 0.017) * 1 sigma uncertainty ellipse (major, minor, PA): (0.025", 0.016", 114°) * approx speed of asteroid's shadow [km/s]: 14.2645 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 272-00753-1 by 1686 De Sitter on 2023 Mar 25 Centre Star Star Sun Path Limit1 Path Limit2 Error Limit1 Error Limit2 Alt E. Longitude Latitude U.T. Alt Az Alt Crn o ' " o ' " h m s o o o o ' " o ' " o ' " o ' " o ' " o ' " o ' " o ' " Longitude Latitude Longitude Latitude Longitude Latitude Longitude Latitude .. .. .. .. .. .. .. .. .... .. .. .. ... .. .. .. .. .. ... .. .. .. .. .. ... .. .. .. .. .. 80 9 51 28 41 0 .... .. .. .. .. .. .. .. .. .... .. .. .. ... .. .. .. .. .. 79 53 40 29 5 35 ... .. .. .. .. .. 76 53 30 28 55 45 .... 78 13 55 29 26 16 0 7 16.8 4 270 -9 80 23 42 29 31 8 76 45 49 29 20 6 ... .. .. .. .. .. 74 48 30 29 8 15 .... 75 46 20 29 39 32 0 7 19.4 6 268 -11 77 0 50 29 46 9 74 42 53 29 32 34 80 15 10 29 55 40 73 8 36 29 19 58 -1.06 73 56 22 29 51 37 0 7 21.9 8 267 -13 74 54 27 29 58 46 73 4 2 29 44 17 76 57 17 30 10 34 71 42 46 29 31 15 -1.15 72 24 33 30 3 8 0 7 24.4 9 267 -14 73 13 55 30 10 35 71 38 53 29 55 35 74 52 1 30 23 11 70 26 14 29 42 14 -1.18 71 3 57 30 14 18 0 7 27.0 10 266 -15 71 47 42 30 21 56 70 22 50 30 6 35 73 12 2 30 35 1 69 16 27 29 53 1 -1.20 69 51 8 30 25 14 0 7 29.5 11 265 -16 70 30 55 30 33 1 69 13 24 30 17 24 71 46 11 30 46 24 68 11 51 30 3 39 -1.21 68 44 11 30 35 59 0 7 32.0 12 265 -17 69 20 57 30 43 53 68 9 6 30 28 3 70 29 39 30 57 30 67 11 24 30 14 10 -1.22 67 41 51 30 46 36 0 7 34.6 13 264 -18 68 16 13 30 54 35 67 8 52 30 38 35 69 19 53 31 8 24 66 14 20 30 24 34 -1.23 66 43 15 30 57 7 0 7 37.1 14 264 -19 67 15 39 31 5 10 66 12 1 30 49 2 68 15 18 31 19 8 65 20 7 30 34 54 -1.23 65 47 44 31 7 32 0 7 39.6 15 263 -19 66 18 31 31 15 39 65 17 58 30 59 23 67 14 53 31 29 45 64 28 21 30 45 10 -1.23 64 54 51 31 17 53 0 7 42.2 16 263 -20 65 24 15 31 26 4 64 26 21 31 9 41 66 17 51 31 40 16 63 38 42 30 55 22 -1.24 64 4 13 31 28 10 0 7 44.7 16 262 -21 64 32 25 31 36 24 63 36 49 31 19 55 65 23 40 31 50 43 62 50 53 31 5 31 -1.24 63 15 33 31 38 24 0 7 47.2 17 262 -21 63 42 43 31 46 41 62 49 8 31 30 6 64 31 55 32 1 5 62 4 44 31 15 37 -1.24 62 28 38 31 48 35 0 7 49.8 18 261 -22 62 54 52 31 56 55 62 3 4 31 40 14 63 42 17 32 11 24 61 20 3 31 25 42 -1.24 61 43 16 31 58 44 0 7 52.3 18 261 -22 62 8 40 32 7 6 61 18 28 31 50 21 62 54 30 32 21 40 60 36 41 31 35 44 -1.24 60 59 17 32 8 51 0 7 54.8 19 260 -23 61 23 57 32 17 16 60 35 11 32 0 25 62 8 22 32 31 54 59 54 29 31 45 45 -1.25 60 16 33 32 18 56 0 7 57.4 19 260 -23 60 40 33 32 27 23 59 53 4 32 10 28 61 23 42 32 42 6 59 13 25 31 55 44 -1.25 59 34 57 32 28 59 0 7 59.9 20 259 -24 59 58 20 32 37 28 59 12 4 32 20 30 60 40 21 32 52 15 58 33 20 32 5 43 -1.25 58 54 25 32 39 1 0 8 2.4 20 259 -24 59 17 14 32 47 33 58 32 3 32 30 30 59 58 10 33 2 23 57 54 11 32 15 40 -1.25 58 14 50 32 49 3 0 8 5.0 21 258 -25 58 37 8 32 57 36 57 52 58 32 40 29 59 17 6 33 12 30 57 15 53 32 25 36 -1.25 57 36 7 32 59 3 0 8 7.5 21 258 -25 57 57 57 33 7 38 57 14 42 32 50 28 58 37 3 33 22 35 56 38 22 32 35 31 -1.25 56 58 14 33 9 2 0 8 10.0 22 257 -26 57 19 38 33 17 39 56 37 14 33 0 25 57 57 54 33 32 40 56 1 35 32 45 25 -1.25 56 21 6 33 19 0 0 8 12.6 22 257 -26 56 42 5 33 27 39 56 0 30 33 10 22 57 19 36 33 42 43 55 25 28 32 55 19 -1.25 55 44 40 33 28 58 0 8 15.1 23 256 -27 56 5 17 33 37 39 55 24 26 33 20 18 56 42 5 33 52 46 54 50 0 33 5 13 -1.25 55 8 54 33 38 56 0 8 17.6 23 256 -27 55 29 9 33 47 38 54 49 0 33 30 14 56 5 17 34 2 48 54 15 8 33 15 5 -1.25 54 33 44 33 48 53 0 8 20.2 24 256 -27 54 53 39 33 57 37 54 14 9 33 40 9 55 29 11 34 12 50 53 40 49 33 24 58 -1.25 53 59 9 33 58 49 0 8 22.7 24 255 -28 54 18 45 34 7 35 53 39 52 33 50 4 54 53 42 34 22 51 53 7 2 33 34 50 -1.25 53 25 6 34 8 46 0 8 25.2 24 255 -28 53 44 25 34 17 33 53 6 6 33 59 59 54 18 49 34 32 52 52 33 44 33 44 42 -1.25 52 51 34 34 18 42 0 8 27.8 25 254 -28 53 10 36 34 27 30 52 32 50 34 9 53 53 44 30 34 42 52 52 0 55 33 54 34 -1.25 52 18 31 34 28 38 0 8 30.3 25 254 -29 52 37 17 34 37 28 52 0 2 34 19 48 53 10 42 34 52 52 51 28 32 34 4 26 -1.25 51 45 55 34 38 33 0 8 32.9 25 253 -29 52 4 26 34 47 25 51 27 41 34 29 42 52 37 24 35 2 52 50 56 34 34 14 18 -1.25 51 13 45 34 48 29 0 8 35.4 26 253 -29 51 32 2 34 57 23 50 55 44 34 39 36 52 4 33 35 12 53 50 25 1 34 24 9 -1.25 50 41 59 34 58 25 0 8 37.9 26 253 -30 51 0 2 35 7 20 50 24 11 34 49 31 51 32 9 35 22 53 49 53 49 34 34 1 -1.26 50 10 36 35 8 21 0 8 40.5 27 252 -30 50 28 27 35 17 17 49 53 1 34 59 25 51 0 10 35 32 53 49 23 0 34 43 53 -1.26 49 39 35 35 18 17 0 8 43.0 27 252 -30 49 57 14 35 27 15 49 22 12 35 9 19 50 28 35 35 42 53 48 52 30 34 53 45 -1.26 49 8 55 35 28 13 0 8 45.5 27 251 -31 49 26 22 35 37 12 48 51 43 35 19 14 49 57 22 35 52 53 48 22 21 35 3 37 -1.26 48 38 35 35 38 9 0 8 48.1 28 251 -31 48 55 51 35 47 10 48 21 34 35 29 9 49 26 30 36 2 53 47 52 30 35 13 30 -1.26 48 8 34 35 48 6 0 8 50.6 28 250 -31 48 25 39 35 57 8 47 51 43 35 39 4 48 55 59 36 12 54 47 22 56 35 23 22 -1.26 47 38 51 35 58 3 0 8 53.1 28 250 -31 47 55 46 36 7 6 47 22 10 35 48 59 48 25 47 36 22 55 46 53 39 35 33 15 -1.26 47 9 24 36 7 59 0 8 55.7 28 250 -32 47 26 10 36 17 5 46 52 53 35 58 55 47 55 54 36 32 56 46 24 39 35 43 8 -1.26 46 40 15 36 17 57 0 8 58.2 29 249 -32 46 56 50 36 27 4 46 23 53 36 8 51 47 26 18 36 42 58 45 55 54 35 53 2 -1.26 46 11 21 36 27 55 0 9 0.7 29 249 -32 46 27 48 36 37 3 45 55 8 36 18 47 46 56 58 36 52 59 45 27 24 36 2 56 -1.26 45 42 42 36 37 53 0 9 3.3 29 248 -32 45 59 0 36 47 3 45 26 37 36 28 44 46 27 55 37 3 2 44 59 8 36 12 50 -1.26 45 14 18 36 47 52 0 9 5.8 30 248 -33 45 30 27 36 57 3 44 58 21 36 38 41 45 59 7 37 13 4 44 31 5 36 22 45 -1.26 44 46 7 36 57 51 0 9 8.3 30 247 -33 45 2 8 37 7 3 44 30 18 36 48 39 45 30 34 37 23 7 44 3 14 36 32 40 -1.26 44 18 9 37 7 50 0 9 10.9 30 247 -33 44 34 3 37 17 4 44 2 28 36 58 37 45 2 14 37 33 11 43 35 37 36 42 36 -1.26 43 50 24 37 17 51 0 9 13.4 30 246 -33 44 6 11 37 27 6 43 34 50 37 8 36 44 34 8 37 43 15 43 8 11 36 52 32 -1.26 43 22 51 37 27 51 0 9 15.9 31 246 -34 43 38 30 37 37 8 43 7 24 37 18 35 44 6 15 37 53 20 42 40 57 37 2 29 -1.26 42 55 30 37 37 53 0 9 18.5 31 246 -34 43 11 2 37 47 11 42 40 10 37 28 35 43 38 34 38 3 25 42 13 54 37 12 26 -1.26 42 28 19 37 47 55 0 9 21.0 31 245 -34 42 43 45 37 57 14 42 13 6 37 38 36 43 11 5 38 13 31 41 47 1 37 22 24 -1.26 42 1 20 37 57 57 0 9 23.5 31 245 -34 42 16 39 38 7 18 41 46 12 37 48 37 42 43 47 38 23 38 41 20 18 37 32 23 -1.26 41 34 30 38 8 0 0 9 26.1 32 244 -34 41 49 43 38 17 23 41 19 29 37 58 38 42 16 40 38 33 45 40 53 45 37 42 22 -1.26 41 7 50 38 18 4 0 9 28.6 32 244 -35 41 22 57 38 27 28 40 52 55 38 8 41 41 49 43 38 43 53 40 27 21 37 52 22 -1.26 40 41 19 38 28 9 0 9 31.1 32 243 -35 40 56 20 38 37 34 40 26 30 38 18 44 41 22 56 38 54 2 40 1 6 38 2 22 -1.26 40 14 58 38 38 14 0 9 33.7 32 243 -35 40 29 53 38 47 41 40 0 14 38 28 48 40 56 18 39 4 11 39 35 0 38 12 24 -1.26 39 48 45 38 48 20 0 9 36.2 33 242 -35 40 3 34 38 57 49 39 34 6 38 38 52 40 29 49 39 14 22 39 9 1 38 22 25 -1.26 39 22 40 38 58 27 0 9 38.7 33 242 -35 39 37 24 39 7 57 39 8 6 38 48 57 40 3 29 39 24 33 38 43 10 38 32 28 -1.26 38 56 43 39 8 34 0 9 41.3 33 241 -35 39 11 21 39 18 6 38 42 15 38 59 3 39 37 18 39 34 44 38 17 27 38 42 32 -1.26 38 30 53 39 18 43 0 9 43.8 33 241 -35 38 45 27 39 28 16 38 16 30 39 9 10 39 11 14 39 44 57 37 51 51 38 52 36 -1.26 38 5 11 39 28 52 0 9 46.3 33 240 -36 38 19 40 39 38 27 37 50 53 39 19 18 38 45 18 39 55 10 37 26 22 39 2 41 -1.26 37 39 36 39 39 2 0 9 48.9 34 240 -36 37 53 59 39 48 38 37 25 22 39 29 27 38 19 29 40 5 25 37 0 59 39 12 47 -1.26 37 14 7 39 49 13 0 9 51.4 34 240 -36 37 28 26 39 58 51 36 59 58 39 39 36 37 53 47 40 15 40 36 35 43 39 22 54 -1.26 36 48 44 39 59 25 0 9 53.9 34 239 -36 37 2 59 40 9 4 36 34 40 39 49 46 37 28 12 40 25 56 36 10 33 39 33 1 -1.26 36 23 28 40 9 38 0 9 56.5 34 239 -36 36 37 38 40 19 19 36 9 28 39 59 58 37 2 43 40 36 14 35 45 28 39 43 10 -1.26 35 58 17 40 19 51 0 9 59.0 34 238 -36 36 12 23 40 29 34 35 44 21 40 10 10 36 37 20 40 46 32 35 20 29 39 53 19 -1.26 35 33 12 40 30 6 0 10 1.5 35 238 -36 35 47 14 40 39 50 35 19 20 40 20 23 36 12 3 40 56 51 34 55 35 40 3 30 -1.26 35 8 12 40 40 22 0 10 4.1 35 237 -37 35 22 9 40 50 8 34 54 24 40 30 37 35 46 52 41 7 11 34 30 46 40 13 41 -1.26 34 43 17 40 50 38 0 10 6.6 35 237 -37 34 57 10 41 0 26 34 29 33 40 40 52 35 21 46 41 17 32 34 6 2 40 23 53 -1.26 34 18 27 41 0 56 0 10 9.1 35 236 -37 34 32 16 41 10 45 34 4 47 40 51 8 34 56 45 41 27 54 33 41 22 40 34 7 -1.26 33 53 41 41 11 15 0 10 11.7 35 236 -37 34 7 27 41 21 5 33 40 5 41 1 25 34 31 48 41 38 17 33 16 46 40 44 21 -1.26 33 29 0 41 21 34 0 10 14.2 35 235 -37 33 42 41 41 31 27 33 15 27 41 11 43 34 6 56 41 48 42 32 52 15 40 54 36 -1.26 33 4 22 41 31 55 0 10 16.7 35 235 -37 33 18 0 41 41 49 32 50 54 41 22 2 33 42 8 41 59 7 32 27 47 41 4 53 -1.26 32 39 49 41 42 17 0 10 19.3 36 234 -37 32 53 23 41 52 13 32 26 24 41 32 23 33 17 25 42 9 34 32 3 23 41 15 10 -1.27 32 15 19 41 52 40 0 10 21.8 36 234 -37 32 28 50 42 2 38 32 1 57 41 42 44 32 52 45 42 20 2 31 39 3 41 25 29 -1.27 31 50 52 42 3 5 0 10 24.3 36 233 -37 32 4 20 42 13 4 31 37 34 41 53 7 32 28 9 42 30 31 31 14 46 41 35 48 -1.27 31 26 29 42 13 30 0 10 26.9 36 233 -37 31 39 53 42 23 31 31 13 14 42 3 30 32 3 36 42 41 1 30 50 31 41 46 9 -1.27 31 2 8 42 23 56 0 10 29.4 36 232 -37 31 15 29 42 33 59 30 48 56 42 13 55 31 39 6 42 51 32 30 26 20 41 56 31 -1.27 30 37 50 42 34 24 0 10 31.9 36 232 -37 30 51 8 42 44 29 30 24 42 42 24 21 31 14 39 43 2 5 30 2 10 42 6 54 -1.27 30 13 35 42 44 53 0 10 34.5 36 231 -38 30 26 49 42 54 59 30 0 30 42 34 48 30 50 15 43 12 38 29 38 4 42 17 18 -1.27 29 49 22 42 55 23 0 10 37.0 37 231 -38 30 2 33 43 5 31 29 36 20 42 45 17 30 25 53 43 23 14 29 13 59 42 27 43 -1.27 29 25 11 43 5 55 0 10 39.5 37 230 -38 29 38 19 43 16 5 29 12 12 42 55 46 30 1 34 43 33 50 28 49 57 42 38 10 -1.27 29 1 2 43 16 27 0 10 42.1 37 230 -38 29 14 7 43 26 39 28 48 7 43 6 17 29 37 17 43 44 28 28 25 56 42 48 38 -1.27 28 36 55 43 27 1 0 10 44.6 37 229 -38 28 49 57 43 37 15 28 24 2 43 16 49 29 13 1 43 55 7 28 1 57 42 59 7 -1.27 28 12 50 43 37 37 0 10 47.1 37 229 -38 28 25 49 43 47 52 28 0 0 43 27 23 28 48 48 44 5 47 27 38 0 43 9 37 -1.27 27 48 46 43 48 13 0 10 49.7 37 228 -38 28 1 42 43 58 31 27 35 59 43 37 58 28 24 36 44 16 29 27 14 4 43 20 9 -1.27 27 24 43 43 58 51 0 10 52.2 37 228 -38 27 37 36 44 9 11 27 11 59 43 48 34 28 0 25 44 27 12 26 50 9 43 30 42 -1.27 27 0 42 44 9 31 0 10 54.7 37 227 -38 27 13 32 44 19 52 26 48 0 43 59 11 27 36 15 44 37 57 26 26 15 43 41 16 -1.27 26 36 41 44 20 12 0 10 57.3 37 227 -38 26 49 28 44 30 35 26 24 2 44 9 50 27 12 7 44 48 43 26 2 22 43 51 52 -1.27 26 12 41 44 30 54 0 10 59.8 37 226 -38 26 25 26 44 41 19 26 0 5 44 20 31 26 47 59 44 59 31 25 38 29 44 2 29 -1.27 25 48 41 44 41 38 0 11 2.3 37 226 -38 26 1 23 44 52 5 25 36 8 44 31 13 26 23 52 45 10 20 25 14 37 44 13 8 -1.27 25 24 42 44 52 23 0 11 4.9 37 225 -38 25 37 21 45 2 52 25 12 11 44 41 56 25 59 45 45 21 11 24 50 45 44 23 47 -1.27 25 0 43 45 3 10 0 11 7.4 38 225 -38 25 13 19 45 13 41 24 48 15 44 52 41 25 35 39 45 32 3 24 26 53 44 34 29 -1.27 24 36 44 45 13 58 0 11 9.9 38 224 -38 24 49 17 45 24 31 24 24 18 45 3 27 25 11 32 45 42 57 24 3 1 44 45 12 -1.27 24 12 44 45 24 48 0 11 12.5 38 224 -38 24 25 15 45 35 23 24 0 22 45 14 15 24 47 25 45 53 52 23 39 9 44 55 56 -1.27 23 48 44 45 35 39 0 11 15.0 38 223 -38 24 1 13 45 46 16 23 36 25 45 25 4 24 23 19 46 4 50 23 15 16 45 6 42 -1.27 23 24 44 45 46 32 0 11 17.5 38 223 -38 23 37 10 45 57 11 23 12 27 45 35 55 23 59 11 46 15 48 22 51 23 45 17 29 -1.27 23 0 43 45 57 26 0 11 20.1 38 222 -38 23 13 7 46 8 8 22 48 28 45 46 47 23 35 3 46 26 49 22 27 29 45 28 18 -1.27 22 36 41 46 8 23 0 11 22.6 38 222 -38 22 49 2 46 19 6 22 24 29 45 57 41 23 10 54 46 37 51 22 3 34 45 39 8 -1.27 22 12 38 46 19 21 0 11 25.1 38 221 -38 22 24 57 46 30 6 22 0 29 46 8 37 22 46 44 46 48 55 21 39 38 45 50 0 -1.27 21 48 34 46 30 20 0 11 27.7 38 220 -38 22 0 50 46 41 8 21 36 27 46 19 34 22 22 33 47 0 0 21 15 41 46 0 54 -1.27 21 24 29 46 41 21 0 11 30.2 38 220 -38 21 36 42 46 52 11 21 12 24 46 30 33 21 58 20 47 11 8 20 51 42 46 11 49 -1.27 21 0 21 46 52 24 0 11 32.7 38 219 -38 21 12 32 47 3 17 20 48 19 46 41 34 21 34 6 47 22 17 20 27 42 46 22 47 -1.27 20 36 12 47 3 29 0 11 35.3 38 219 -38 20 48 21 47 14 24 20 24 13 46 52 37 21 9 50 47 33 28 20 3 40 46 33 45 -1.27 20 12 1 47 14 36 0 11 37.8 38 218 -38 20 24 7 47 25 32 20 0 4 47 3 41 20 45 32 47 44 41 19 39 36 46 44 46 -1.27 19 47 48 47 25 44 0 11 40.3 38 218 -38 19 59 51 47 36 43 19 35 54 47 14 47 20 21 12 47 55 56 19 15 30 46 55 48 -1.27 19 23 33 47 36 54 0 11 42.9 38 217 -38 19 35 33 47 47 56 19 11 41 47 25 55 19 56 50 48 7 12 18 51 21 47 6 52 -1.27 18 59 15 47 48 6 0 11 45.4 38 217 -38 19 11 13 47 59 10 18 47 25 47 37 5 19 32 25 48 18 31 18 27 10 47 17 58 -1.27 18 34 54 47 59 20 0 11 47.9 38 216 -38 18 46 49 48 10 27 18 23 7 47 48 17 19 7 57 48 29 52 18 2 56 47 29 5 -1.27 18 10 30 48 10 36 0 11 50.5 38 216 -37 18 22 23 48 21 45 17 58 46 47 59 30 18 43 26 48 41 14 17 38 39 47 40 15 -1.27 17 46 3 48 21 54 0 11 53.0 38 215 -37 17 57 54 48 33 5 17 34 21 48 10 46 18 18 53 48 52 39 17 14 19 47 51 26 -1.27 17 21 33 48 33 14 0 11 55.6 38 214 -37 17 33 21 48 44 28 17 9 54 48 22 3 17 54 15 49 4 6 16 49 56 48 2 39 -1.27 16 57 0 48 44 36 0 11 58.1 38 214 -37 17 8 45 48 55 52 16 45 23 48 33 22 17 29 35 49 15 35 16 25 30 48 13 54 -1.27 16 32 22 48 56 0 0 12 0.6 38 213 -37 16 44 5 49 7 19 16 20 48 48 44 44 17 4 50 49 27 6 16 1 0 48 25 11 -1.28 16 7 41 49 7 26 0 12 3.2 38 213 -37 16 19 21 49 18 47 15 56 10 48 56 7 16 40 2 49 38 39 15 36 26 48 36 30 -1.28 15 42 56 49 18 54 0 12 5.7 38 212 -37 15 54 33 49 30 18 15 31 27 49 7 33 16 15 9 49 50 14 15 11 48 48 47 52 -1.28 15 18 6 49 30 24 0 12 8.2 38 212 -37 15 29 41 49 41 51 15 6 40 49 19 0 15 50 12 50 1 52 14 47 5 48 59 15 -1.28 14 53 12 49 41 57 0 12 10.8 38 211 -37 15 4 44 49 53 26 14 41 49 49 30 30 15 25 11 50 13 32 14 22 19 49 10 40 -1.28 14 28 13 49 53 31 0 12 13.3 38 211 -37 14 39 43 50 5 3 14 16 53 49 42 2 15 0 5 50 25 14 13 57 27 49 22 7 -1.28 14 3 9 50 5 8 0 12 15.8 38 210 -37 14 14 36 50 16 43 13 51 51 49 53 36 14 34 53 50 36 58 13 32 31 49 33 37 -1.28 13 38 0 50 16 47 0 12 18.4 38 209 -37 13 49 24 50 28 25 13 26 45 50 5 13 14 9 36 50 48 45 13 7 30 49 45 9 -1.28 13 12 46 50 28 29 0 12 20.9 38 209 -36 13 24 7 50 40 9 13 1 33 50 16 51 13 44 14 51 0 35 12 42 23 49 56 42 -1.28 12 47 26 50 40 13 0 12 23.4 38 208 -36 12 58 44 50 51 56 12 36 16 50 28 32 13 18 46 51 12 26 12 17 11 50 8 19 -1.28 12 21 59 50 51 59 0 12 26.0 38 208 -36 12 33 15 51 3 45 12 10 53 50 40 15 12 53 12 51 24 21 11 51 53 50 19 57 -1.28 11 56 27 51 3 47 0 12 28.5 38 207 -36 12 7 39 51 15 36 11 45 24 50 52 1 12 27 31 51 36 17 11 26 29 50 31 38 -1.28 11 30 48 51 15 38 0 12 31.0 38 207 -36 11 41 58 51 27 30 11 19 48 51 3 49 12 1 44 51 48 17 11 0 58 50 43 21 -1.28 11 5 3 51 27 32 0 12 33.6 38 206 -36 11 16 9 51 39 27 10 54 6 51 15 40 11 35 50 52 0 19 10 35 22 50 55 6 -1.28 10 39 11 51 39 28 0 12 36.1 38 205 -36 10 50 14 51 51 26 10 28 17 51 27 33 11 9 49 52 12 23 10 9 38 51 6 54 -1.28 10 13 11 51 51 26 0 12 38.6 37 205 -36 10 24 11 52 3 27 10 2 21 51 39 28 10 43 41 52 24 30 9 43 47 51 18 44 -1.28 9 47 4 52 3 28 0 12 41.2 37 204 -36 9 58 1 52 15 32 9 36 17 51 51 26 10 17 25 52 36 40 9 17 49 51 30 37 -1.28 9 20 50 52 15 31 0 12 43.7 37 204 -35 9 31 42 52 27 39 9 10 5 52 3 27 9 51 1 52 48 53 8 51 44 51 42 32 -1.28 8 54 27 52 27 38 0 12 46.2 37 203 -35 9 5 16 52 39 49 8 43 46 52 15 30 9 24 29 53 1 9 8 25 31 51 54 30 -1.28 8 27 56 52 39 47 0 12 48.8 37 202 -35 8 38 41 52 52 1 8 17 18 52 27 36 8 57 48 53 13 27 7 59 9 52 6 31 -1.28 8 1 16 52 51 59 0 12 51.3 37 202 -35 8 11 58 53 4 17 7 50 42 52 39 45 8 30 58 53 25 49 7 32 39 52 18 34 -1.28 7 34 27 53 4 14 0 12 53.8 37 201 -35 7 45 5 53 16 35 7 23 57 52 51 57 8 3 59 53 38 13 7 6 0 52 30 39 -1.28 7 7 29 53 16 32 0 12 56.4 37 201 -35 7 18 3 53 28 56 6 57 3 53 4 11 7 36 50 53 50 40 6 39 13 52 42 48 -1.28 6 40 21 53 28 53 0 12 58.9 37 200 -35 6 50 51 53 41 20 6 29 59 53 16 28 7 9 31 54 3 11 6 12 16 52 54 59 -1.28 6 13 3 53 41 16 0 13 1.4 37 200 -34 6 23 29 53 53 48 6 2 45 53 28 48 6 42 2 54 15 44 5 45 9 53 7 13 -1.28 5 45 34 53 53 43 0 13 4.0 37 199 -34 5 55 57 54 6 18 5 35 21 53 41 11 6 14 22 54 28 21 5 17 52 53 19 30 -1.28 5 17 55 54 6 12 0 13 6.5 36 198 -34 5 28 13 54 18 51 5 7 46 53 53 37 5 46 31 54 41 1 4 50 24 53 31 50 -1.28 4 50 5 54 18 45 0 13 9.0 36 198 -34 5 0 19 54 31 28 4 40 0 54 6 6 5 18 29 54 53 44 4 22 46 53 44 13 -1.28 4 22 3 54 31 21 0 13 11.6 36 197 -34 4 32 12 54 44 7 4 12 3 54 18 38 4 50 15 55 6 31 3 54 57 53 56 39 -1.28 3 53 49 54 44 0 0 13 14.1 36 196 -34 4 3 54 54 56 50 3 43 54 54 31 14 4 21 48 55 19 20 3 26 56 54 9 8 -1.28 3 25 23 54 56 43 0 13 16.6 36 196 -33 3 35 23 55 9 37 3 15 32 54 43 52 3 53 8 55 32 14 2 58 43 54 21 40 -1.28 2 56 44 55 9 28 0 13 19.2 36 195 -33 3 6 39 55 22 26 2 46 58 54 56 34 3 24 15 55 45 11 2 30 18 54 34 15 -1.28 2 27 52 55 22 17 0 13 21.7 36 195 -33 2 37 41 55 35 19 2 18 11 55 9 19 2 55 8 55 58 11 2 1 39 54 46 53 -1.28 1 58 46 55 35 10 0 13 24.2 36 194 -33 2 8 30 55 48 16 1 49 10 55 22 8 2 25 47 56 11 15 1 32 48 54 59 35 -1.28 1 29 25 55 48 6 0 13 26.8 35 193 -33 1 39 4 56 1 16 1 19 55 55 35 0 1 56 12 56 24 23 1 3 43 55 12 20 -1.28 0 59 50 56 1 6 0 13 29.3 35 193 -32 1 9 23 56 14 20 0 50 26 55 47 55 1 26 20 56 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Uncertainty in time = +/- 3 secs Prediction of 2023 Feb 15.9 Data for the target star ------------------------ * name: TYC 272-00753-1 * constellation : Virgo * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 11 43 31.6943 DE: +01 55 18.519 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 11 43 31.6942 DE: +01 55 18.519 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 9.7 * B mag [mag]: 10.3 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (1686) De Sitter asteroid class: approx. diameter [km]: 31 approx. diameter ["]: 0.018 distance from Earth [AU]: 2.38940 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#60 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): 0.025", 0.016", 113.998° remarks: * orbital elements for (1686)De Sitter : Mean anomaly = 253.2219998363 deg Arg. of pericenter = 294.6077046098 deg Long. of node = 6.3606121633 deg Inclination = 0.6163792745 deg Eccentricity = 0.1590988980 Semimajor axis = 3.1658490994 AU Perihelion dist = 2.6621659965 AU Mag: H = 11.22, G = 0.15 Epoch of elements : MJD 60028.00814167 TDT (2023 Mar 25.0081) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#602023Feb07,2.18,2023,3,25,0.197651,0.302758,0.723568,-7.427572,3.107081,0.000802,-0.000362,0.000001,-0.000001 -8.9877,1.7918,178.59,1.63,False TYC 272-00753-1,11.72547063,1.9218108,10.30,9.70,9.38,0.1,0,,11.74550932,1.7918332,6.34,6.21,0,0,0 1686,De Sitter,16.03,31.2,2.3894,0,0,-1.823,11.43,,2.0,0 0,253.0456,2023,3,24,294.6077,6.3606,0.6164,0.15910,3.16585,2.66217,11.23,5.0,0.15 1.871,0.0247,0.0157,114,0.0157,Known errors,-1.00,-1,-1,-1 20230325_0753-1,59990.87 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Feb 15, 20:52 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org