IOTA/IOTA-ES occultation update for (20) Massalia / UCAC4 339-091483 event on 2023 Sep 11, 20:20 UT Visible from Africa Summary ------- On 2023 Sep 11 UT, the 138.3 km diameter asteroid (20) Massalia will occult a 11.1 mag star in the constellation Ophiuchus for observers along a path across Africa. In the case of an occultation, the combined light of the asteroid and the star will drop by 1.21 mag to 11.86 mag (the magnitude of the asteroid) for at most 9.390 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 Sep 11, 20:13 - 2023 Sep 11, 20:27 * geocentric midpoint of event [JD]: 2460199.34775883 * magnitude of target star: 11.08 * magnitude drop [mag]: 1.21 * estimated maximum duration [s]: 9.390 * Moon: 9 % sunlit, 127° distance * Sun: 92° distance * rough path description: Africa The occultation path -------------------- * approximate projected width [km]: 144 * 1 sigma uncertainty interval [path widths]: +/- 0.02 * 1 sigma uncertainty interval [seconds]: +/- 0.3 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.003, +/- 0.002) * 1 sigma uncertainty ellipse (major, minor, PA): (0.003", 0.002", 93°) * approx speed of asteroid's shadow [km/s]: 14.7247 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 339-091483 by 20 Massalia on 2023 Sep 11 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 -128 0 0 -10 46 51 20 13 50.8 0 113 74 -11 29 31 .. .. .. -11 31 14 .. .. .. .... -127 0 0 -11 11 54 20 13 50.8 1 113 74 -11 54 36 -10 29 22 -11 56 19 -10 27 40 0.29 -126 0 0 -11 37 4 20 13 51.1 2 112 74 -12 19 49 -10 54 29 -12 21 31 -10 52 48 0.30 -125 0 0 -12 2 21 20 13 51.5 3 112 74 -12 45 8 -11 19 44 -12 46 51 -11 18 2 0.30 -124 0 0 -12 27 44 20 13 52.1 4 112 73 -13 10 34 -11 45 5 -13 12 17 -11 43 24 0.30 -123 0 0 -12 53 13 20 13 52.8 5 112 73 -13 36 5 -12 10 32 -13 37 48 -12 8 50 0.30 -122 0 0 -13 18 48 20 13 53.6 6 112 72 -14 1 41 -12 36 5 -14 3 24 -12 34 23 0.30 -121 0 0 -13 44 26 20 13 54.7 8 111 72 -14 27 21 -13 1 41 -14 29 4 -12 59 59 0.30 -120 0 0 -14 10 8 20 13 55.8 9 111 71 -14 53 5 -13 27 22 -14 54 48 -13 25 40 0.30 -119 0 0 -14 35 53 20 13 57.2 10 111 70 -15 18 52 -13 53 6 -15 20 35 -13 51 23 0.30 -118 0 0 -15 1 41 20 13 58.7 11 111 70 -15 44 41 -14 18 52 -15 46 24 -14 17 10 0.31 -117 0 0 -15 27 30 20 14 0.3 12 110 69 -16 10 31 -14 44 40 -16 12 14 -14 42 58 0.31 -116 0 0 -15 53 20 20 14 2.1 13 110 68 -16 36 22 -15 10 29 -16 38 5 -15 8 47 0.31 -115 0 0 -16 19 11 20 14 4.0 14 110 67 -17 2 14 -15 36 19 -17 3 57 -15 34 37 0.31 -114 0 0 -16 45 1 20 14 6.1 15 109 67 -17 28 4 -16 2 8 -17 29 48 -16 0 26 0.31 -113 0 0 -17 10 50 20 14 8.3 16 109 66 -17 53 54 -16 27 57 -17 55 37 -16 26 15 0.31 -112 0 0 -17 36 38 20 14 10.7 17 109 65 -18 19 42 -16 53 44 -18 21 25 -16 52 2 0.31 -111 0 0 -18 2 23 20 14 13.2 18 108 64 -18 45 27 -17 19 29 -18 47 11 -17 17 47 0.31 -110 0 0 -18 28 5 20 14 15.8 19 108 63 -19 11 9 -17 45 11 -19 12 53 -17 43 29 0.31 -109 0 0 -18 53 43 20 14 18.6 20 108 62 -19 36 47 -18 10 50 -19 38 31 -18 9 8 0.31 -108 0 0 -19 19 17 20 14 21.6 21 107 61 -20 2 21 -18 36 24 -20 4 4 -18 34 42 0.31 -107 0 0 -19 44 46 20 14 24.6 22 107 60 -20 27 49 -19 1 54 -20 29 32 -19 0 11 0.31 -106 0 0 -20 10 9 20 14 27.8 23 107 60 -20 53 12 -19 27 18 -20 54 55 -19 25 35 0.30 -105 0 0 -20 35 26 20 14 31.1 24 106 59 -21 18 28 -19 52 35 -21 20 11 -19 50 53 0.30 -104 0 0 -21 0 36 20 14 34.5 25 106 58 -21 43 36 -20 17 46 -21 45 20 -20 16 4 0.30 -103 0 0 -21 25 38 20 14 38.1 26 105 57 -22 8 37 -20 42 50 -22 10 20 -20 41 8 0.30 -102 0 0 -21 50 32 20 14 41.8 27 105 56 -22 33 30 -21 7 45 -22 35 13 -21 6 3 0.30 -101 0 0 -22 15 18 20 14 45.6 28 104 55 -22 58 14 -21 32 32 -22 59 57 -21 30 50 0.30 -100 0 0 -22 39 53 20 14 49.5 29 104 54 -23 22 48 -21 57 9 -23 24 30 -21 55 27 0.30 - 99 0 0 -23 4 19 20 14 53.5 30 103 53 -23 47 11 -22 21 37 -23 48 54 -22 19 55 0.30 - 98 0 0 -23 28 34 20 14 57.6 31 103 52 -24 11 24 -22 45 54 -24 13 7 -22 44 12 0.30 - 97 0 0 -23 52 38 20 15 1.9 32 102 51 -24 35 26 -23 10 0 -24 37 9 -23 8 19 0.30 - 96 0 0 -24 16 31 20 15 6.2 33 102 50 -24 59 16 -23 33 55 -25 0 59 -23 32 13 0.30 - 95 0 0 -24 40 11 20 15 10.6 34 101 49 -25 22 54 -23 57 38 -25 24 36 -23 55 56 0.30 - 94 0 0 -25 3 38 20 15 15.2 35 101 48 -25 46 19 -24 21 8 -25 48 1 -24 19 26 0.30 - 93 0 0 -25 26 52 20 15 19.8 36 100 47 -26 9 30 -24 44 25 -26 11 12 -24 42 43 0.30 - 92 0 0 -25 49 53 20 15 24.5 37 99 46 -26 32 28 -25 7 28 -26 34 10 -25 5 47 0.30 - 91 0 0 -26 12 39 20 15 29.3 38 99 45 -26 55 11 -25 30 18 -26 56 53 -25 28 36 0.30 - 90 0 0 -26 35 11 20 15 34.2 39 98 44 -27 17 40 -25 52 52 -27 19 21 -25 51 11 0.30 - 89 0 0 -26 57 28 20 15 39.1 40 98 43 -27 39 53 -26 15 12 -27 41 35 -26 13 32 0.30 - 88 0 0 -27 19 29 20 15 44.2 41 97 42 -28 1 51 -26 37 17 -28 3 33 -26 35 36 0.30 - 87 0 0 -27 41 15 20 15 49.3 42 96 41 -28 23 33 -26 59 6 -28 25 14 -26 57 25 0.30 - 86 0 0 -28 2 44 20 15 54.5 43 95 41 -28 44 58 -27 20 39 -28 46 40 -27 18 58 0.30 - 85 0 0 -28 23 56 20 15 59.7 44 95 40 -29 6 7 -27 41 55 -29 7 49 -27 40 15 0.30 - 84 0 0 -28 44 52 20 16 5.0 45 94 39 -29 26 59 -28 2 54 -29 28 40 -28 1 14 0.30 - 83 0 0 -29 5 30 20 16 10.4 46 93 38 -29 47 34 -28 23 37 -29 49 15 -28 21 57 0.30 - 82 0 0 -29 25 51 20 16 15.9 47 92 37 -30 7 50 -28 44 1 -30 9 31 -28 42 21 0.30 - 81 0 0 -29 45 54 20 16 21.4 48 92 36 -30 27 49 -29 4 8 -30 29 30 -29 2 28 0.30 - 80 0 0 -30 5 39 20 16 26.9 48 91 35 -30 47 30 -29 23 57 -30 49 10 -29 22 17 0.30 - 79 0 0 -30 25 5 20 16 32.5 49 90 34 -31 6 52 -29 43 27 -31 8 32 -29 41 48 0.30 - 78 0 0 -30 44 12 20 16 38.2 50 89 33 -31 25 55 -30 2 39 -31 27 35 -30 0 59 0.30 - 77 0 0 -31 3 1 20 16 43.9 51 88 32 -31 44 39 -30 21 31 -31 46 19 -30 19 52 0.30 - 76 0 0 -31 21 30 20 16 49.6 52 87 31 -32 3 4 -30 40 5 -32 4 44 -30 38 26 0.30 - 75 0 0 -31 39 40 20 16 55.4 53 86 30 -32 21 10 -30 58 19 -32 22 50 -30 56 40 0.30 - 74 0 0 -31 57 30 20 17 1.2 54 85 29 -32 38 56 -31 16 14 -32 40 35 -31 14 35 0.30 - 73 0 0 -32 15 1 20 17 7.1 54 84 29 -32 56 22 -31 33 49 -32 58 2 -31 32 10 0.30 - 72 0 0 -32 32 12 20 17 12.9 55 83 28 -33 13 29 -31 51 4 -33 15 8 -31 49 25 0.30 - 71 0 0 -32 49 2 20 17 18.9 56 82 27 -33 30 15 -32 7 58 -33 31 54 -32 6 20 0.30 - 70 0 0 -33 5 32 20 17 24.8 57 81 26 -33 46 41 -32 24 33 -33 48 19 -32 22 55 0.30 - 69 0 0 -33 21 43 20 17 30.8 58 79 25 -34 2 46 -32 40 48 -34 4 25 -32 39 10 0.30 - 68 0 0 -33 37 32 20 17 36.8 59 78 24 -34 18 32 -32 56 41 -34 20 10 -32 55 4 0.30 - 67 0 0 -33 53 1 20 17 42.8 59 77 23 -34 33 56 -33 12 15 -34 35 34 -33 10 37 0.30 - 66 0 0 -34 8 9 20 17 48.8 60 76 22 -34 49 0 -33 27 27 -34 50 38 -33 25 50 0.30 - 65 0 0 -34 22 57 20 17 54.9 61 74 21 -35 3 43 -33 42 19 -35 5 21 -33 40 42 0.30 - 64 0 0 -34 37 23 20 18 1.0 62 73 21 -35 18 6 -33 56 50 -35 19 43 -33 55 13 0.30 - 63 0 0 -34 51 29 20 18 7.1 62 71 20 -35 32 7 -34 11 0 -35 33 45 -34 9 23 0.30 - 62 0 0 -35 5 14 20 18 13.2 63 70 19 -35 45 48 -34 24 48 -35 47 25 -34 23 12 0.30 - 61 0 0 -35 18 37 20 18 19.3 64 68 18 -35 59 7 -34 38 16 -36 0 44 -34 36 40 0.30 - 60 0 0 -35 31 40 20 18 25.4 64 66 17 -36 12 6 -34 51 23 -36 13 43 -34 49 47 0.30 - 59 0 0 -35 44 21 20 18 31.6 65 65 16 -36 24 43 -35 4 8 -36 26 20 -35 2 32 0.30 - 58 0 0 -35 56 42 20 18 37.7 66 63 15 -36 37 0 -35 16 32 -36 38 36 -35 14 56 0.30 - 57 0 0 -36 8 41 20 18 43.9 66 61 14 -36 48 55 -35 28 35 -36 50 31 -35 27 0 0.30 - 56 0 0 -36 20 19 20 18 50.0 67 59 14 -37 0 29 -35 40 17 -37 2 5 -35 38 41 0.30 - 55 0 0 -36 31 35 20 18 56.2 68 57 13 -37 11 42 -35 51 37 -37 13 18 -35 50 2 0.30 - 54 0 0 -36 42 31 20 19 2.4 68 55 12 -37 22 34 -36 2 37 -37 24 10 -36 1 1 0.30 - 53 0 0 -36 53 5 20 19 8.5 69 53 11 -37 33 4 -36 13 14 -37 34 40 -36 11 39 0.30 - 52 0 0 -37 3 18 20 19 14.7 69 50 10 -37 43 14 -36 23 31 -37 44 49 -36 21 56 0.30 - 51 0 0 -37 13 10 20 19 20.9 70 48 9 -37 53 2 -36 33 26 -37 54 38 -36 31 51 0.30 - 50 0 0 -37 22 41 20 19 27.0 70 45 9 -38 2 29 -36 43 0 -38 4 5 -36 41 25 0.30 - 49 0 0 -37 31 50 20 19 33.2 71 43 8 -38 11 36 -36 52 12 -38 13 11 -36 50 38 0.30 - 48 0 0 -37 40 38 20 19 39.4 71 40 7 -38 20 21 -37 1 4 -38 21 56 -36 59 29 0.30 - 47 0 0 -37 49 5 20 19 45.5 71 37 6 -38 28 45 -37 9 34 -38 30 20 -37 7 59 0.30 - 46 0 0 -37 57 11 20 19 51.7 72 34 5 -38 36 47 -37 17 42 -38 38 22 -37 16 8 0.30 - 45 0 0 -38 4 55 20 19 57.8 72 32 4 -38 44 29 -37 25 30 -38 46 4 -37 23 55 0.30 - 44 0 0 -38 12 19 20 20 4.0 72 28 4 -38 51 50 -37 32 56 -38 53 25 -37 31 22 0.30 - 43 0 0 -38 19 21 20 20 10.1 73 25 3 -38 58 50 -37 40 1 -39 0 25 -37 38 27 0.30 - 42 0 0 -38 26 3 20 20 16.2 73 22 2 -39 5 29 -37 46 45 -39 7 3 -37 45 11 0.30 - 41 0 0 -38 32 23 20 20 22.3 73 19 1 -39 11 47 -37 53 7 -39 13 21 -37 51 33 0.30 - 40 0 0 -38 38 22 20 20 28.4 73 16 0 -39 17 44 -37 59 9 -39 19 18 -37 57 35 0.30 - 39 0 0 -38 44 0 20 20 34.5 73 12 0 -39 23 20 -38 4 49 -39 24 54 -38 3 15 0.30 - 38 0 0 -38 49 18 20 20 40.6 73 9 -1 -39 28 35 -38 10 8 -39 30 9 -38 8 35 0.30 - 37 0 0 -38 54 14 20 20 46.7 73 5 -2 -39 33 29 -38 15 6 -39 35 4 -38 13 33 0.30 - 36 0 0 -38 58 49 20 20 52.8 73 2 -3 -39 38 3 -38 19 43 -39 39 37 -38 18 10 0.30 - 35 0 0 -39 3 4 20 20 58.8 73 359 -4 -39 42 16 -38 23 59 -39 43 50 -38 22 26 0.30 - 34 0 0 -39 6 57 20 21 4.9 73 355 -4 -39 46 8 -38 27 54 -39 47 42 -38 26 21 0.30 - 33 0 0 -39 10 30 20 21 10.9 73 352 -5 -39 49 39 -38 31 28 -39 51 13 -38 29 55 0.30 - 32 0 0 -39 13 42 20 21 16.9 73 349 -6 -39 52 50 -38 34 41 -39 54 24 -38 33 8 0.30 - 31 0 0 -39 16 32 20 21 22.9 73 346 -7 -39 55 40 -38 37 33 -39 57 13 -38 36 0 0.30 - 30 0 0 -39 19 3 20 21 28.9 72 343 -8 -39 58 9 -38 40 4 -39 59 42 -38 38 31 0.30 - 29 0 0 -39 21 12 20 21 34.8 72 340 -8 -40 0 17 -38 42 14 -40 1 51 -38 40 41 0.30 - 28 0 0 -39 23 0 20 21 40.8 72 337 -9 -40 2 5 -38 44 3 -40 3 39 -38 42 30 0.30 - 27 0 0 -39 24 28 20 21 46.7 71 334 -10 -40 3 32 -38 45 32 -40 5 6 -38 43 59 0.30 - 26 0 0 -39 25 35 20 21 52.7 71 331 -11 -40 4 39 -38 46 39 -40 6 12 -38 45 6 0.30 - 25 0 0 -39 26 21 20 21 58.6 71 329 -12 -40 5 25 -38 47 25 -40 6 58 -38 45 52 0.30 - 24 0 0 -39 26 47 20 22 4.5 70 326 -12 -40 5 50 -38 47 51 -40 7 23 -38 46 18 0.30 - 23 0 0 -39 26 51 20 22 10.3 70 324 -13 -40 5 55 -38 47 56 -40 7 28 -38 46 23 0.30 - 22 0 0 -39 26 35 20 22 16.2 69 321 -14 -40 5 39 -38 47 39 -40 7 12 -38 46 6 0.30 - 21 0 0 -39 25 58 20 22 22.0 69 319 -15 -40 5 2 -38 47 2 -40 6 36 -38 45 29 0.30 - 20 0 0 -39 25 1 20 22 27.9 68 317 -15 -40 4 5 -38 46 5 -40 5 39 -38 44 32 0.30 - 19 0 0 -39 23 43 20 22 33.7 68 315 -16 -40 2 47 -38 44 46 -40 4 21 -38 43 13 0.30 - 18 0 0 -39 22 4 20 22 39.4 67 313 -17 -40 1 9 -38 43 6 -40 2 43 -38 41 33 0.30 - 17 0 0 -39 20 4 20 22 45.2 67 311 -18 -39 59 10 -38 41 6 -40 0 44 -38 39 32 0.30 - 16 0 0 -39 17 43 20 22 50.9 66 309 -19 -39 56 50 -38 38 44 -39 58 24 -38 37 11 0.30 - 15 0 0 -39 15 2 20 22 56.7 65 307 -19 -39 54 10 -38 36 2 -39 55 44 -38 34 29 0.30 - 14 0 0 -39 12 0 20 23 2.4 65 305 -20 -39 51 10 -38 32 59 -39 52 43 -38 31 26 0.30 - 13 0 0 -39 8 38 20 23 8.0 64 304 -21 -39 47 48 -38 29 35 -39 49 22 -38 28 1 0.30 - 12 0 0 -39 4 54 20 23 13.7 64 302 -22 -39 44 6 -38 25 50 -39 45 40 -38 24 16 0.30 - 11 0 1 -39 0 50 20 23 19.3 63 300 -23 -39 40 3 -38 21 44 -39 41 37 -38 20 11 0.30 - 10 0 1 -38 56 25 20 23 24.9 62 299 -23 -39 35 40 -38 17 17 -39 37 14 -38 15 44 0.30 - 9 0 1 -38 51 39 20 23 30.5 62 297 -24 -39 30 56 -38 12 29 -39 32 30 -38 10 56 0.30 - 8 0 1 -38 46 32 20 23 36.1 61 296 -25 -39 25 51 -38 7 21 -39 27 25 -38 5 47 0.30 - 7 0 1 -38 41 4 20 23 41.6 60 294 -26 -39 20 26 -38 1 51 -39 22 0 -38 0 17 0.30 - 6 0 1 -38 35 16 20 23 47.1 60 293 -27 -39 14 39 -37 56 1 -39 16 14 -37 54 27 0.30 - 5 0 1 -38 29 7 20 23 52.6 59 292 -27 -39 8 32 -37 49 49 -39 10 7 -37 48 15 0.30 - 4 0 1 -38 22 37 20 23 58.0 58 291 -28 -39 2 5 -37 43 16 -39 3 39 -37 41 42 0.30 - 3 0 1 -38 15 46 20 24 3.4 57 289 -29 -38 55 16 -37 36 23 -38 56 51 -37 34 49 0.30 - 2 0 1 -38 8 34 20 24 8.8 57 288 -30 -38 48 7 -37 29 8 -38 49 42 -37 27 34 0.30 - 1 0 1 -38 1 1 20 24 14.2 56 287 -31 -38 40 37 -37 21 33 -38 42 12 -37 19 58 0.30 - 0 0 1 -37 53 7 20 24 19.5 55 286 -31 -38 32 46 -37 13 36 -38 34 21 -37 12 2 0.30 0 59 59 -37 44 52 20 24 24.8 55 285 -32 -38 24 34 -37 5 18 -38 26 9 -37 3 44 0.30 1 59 59 -37 36 16 20 24 30.1 54 284 -33 -38 16 1 -36 56 40 -38 17 37 -36 55 5 0.30 2 59 59 -37 27 20 20 24 35.3 53 283 -34 -38 7 8 -36 47 40 -38 8 43 -36 46 5 0.30 3 59 59 -37 18 2 20 24 40.5 52 281 -35 -37 57 53 -36 38 19 -37 59 29 -36 36 44 0.30 4 59 59 -37 8 24 20 24 45.7 52 280 -35 -37 48 18 -36 28 37 -37 49 54 -36 27 2 0.30 5 59 59 -36 58 24 20 24 50.8 51 279 -36 -37 38 22 -36 18 34 -37 39 58 -36 16 59 0.30 6 59 59 -36 48 4 20 24 55.9 50 279 -37 -37 28 5 -36 8 10 -37 29 41 -36 6 35 0.30 7 59 59 -36 37 22 20 25 0.9 49 278 -38 -37 17 27 -35 57 25 -37 19 3 -35 55 50 0.30 8 59 59 -36 26 20 20 25 5.9 48 277 -39 -37 6 29 -35 46 19 -37 8 5 -35 44 44 0.30 9 59 59 -36 14 57 20 25 10.9 48 276 -39 -36 55 9 -35 34 52 -36 56 46 -35 33 17 0.30 10 59 59 -36 3 13 20 25 15.8 47 275 -40 -36 43 29 -35 23 4 -36 45 5 -35 21 29 0.30 11 59 59 -35 51 8 20 25 20.6 46 274 -41 -36 31 28 -35 10 56 -36 33 5 -35 9 20 0.30 12 59 59 -35 38 42 20 25 25.4 45 273 -42 -36 19 6 -34 58 26 -36 20 43 -34 56 50 0.30 13 59 59 -35 25 55 20 25 30.2 44 272 -43 -36 6 23 -34 45 35 -36 8 0 -34 43 59 0.30 14 59 59 -35 12 48 20 25 34.9 44 271 -44 -35 53 20 -34 32 24 -35 54 57 -34 30 48 0.30 15 59 59 -34 59 20 20 25 39.6 43 271 -44 -35 39 56 -34 18 52 -35 41 33 -34 17 15 0.30 16 59 59 -34 45 31 20 25 44.2 42 270 -45 -35 26 12 -34 4 59 -35 27 49 -34 3 23 0.30 17 59 59 -34 31 22 20 25 48.8 41 269 -46 -35 12 7 -33 50 46 -35 13 44 -33 49 9 0.30 18 59 59 -34 16 52 20 25 53.3 40 268 -47 -34 57 41 -33 36 12 -34 59 19 -33 34 35 0.30 19 59 59 -34 2 2 20 25 57.7 39 268 -48 -34 42 55 -33 21 18 -34 44 33 -33 19 41 0.30 20 59 59 -33 46 52 20 26 2.1 38 267 -48 -34 27 49 -33 6 3 -34 29 27 -33 4 26 0.31 21 59 59 -33 31 21 20 26 6.4 38 266 -49 -34 12 23 -32 50 28 -34 14 1 -32 48 51 0.31 22 59 59 -33 15 30 20 26 10.6 37 265 -50 -33 56 36 -32 34 34 -33 58 15 -32 32 56 0.31 23 59 59 -32 59 20 20 26 14.8 36 265 -51 -33 40 30 -32 18 19 -33 42 8 -32 16 41 0.31 24 59 59 -32 42 49 20 26 18.9 35 264 -52 -33 24 3 -32 1 44 -33 25 42 -32 0 6 0.31 25 59 59 -32 25 59 20 26 23.0 34 263 -53 -33 7 17 -31 44 49 -33 8 56 -31 43 11 0.31 26 59 59 -32 8 49 20 26 27.0 33 263 -53 -32 50 12 -31 27 35 -32 51 51 -31 25 57 0.31 27 59 59 -31 51 20 20 26 30.8 32 262 -54 -32 32 47 -31 10 2 -32 34 26 -31 8 23 0.31 28 59 59 -31 33 31 20 26 34.7 31 261 -55 -32 15 2 -30 52 10 -32 16 42 -30 50 31 0.31 29 59 59 -31 15 24 20 26 38.4 31 261 -56 -31 56 59 -30 33 58 -31 58 39 -30 32 19 0.31 30 59 59 -30 56 58 20 26 42.0 30 260 -57 -31 38 37 -30 15 28 -31 40 17 -30 13 49 0.31 31 59 59 -30 38 13 20 26 45.6 29 260 -58 -31 19 56 -29 56 39 -31 21 36 -29 55 0 0.31 32 59 59 -30 19 10 20 26 49.1 28 259 -58 -31 0 57 -29 37 32 -31 2 38 -29 35 52 0.31 33 59 59 -29 59 49 20 26 52.5 27 258 -59 -30 41 40 -29 18 7 -30 43 20 -29 16 27 0.31 34 59 59 -29 40 9 20 26 55.8 26 258 -60 -30 22 5 -28 58 24 -30 23 45 -28 56 44 0.31 35 59 59 -29 20 13 20 26 59.0 25 257 -61 -30 2 12 -28 38 23 -30 3 53 -28 36 43 0.31 36 59 59 -28 59 59 20 27 2.1 24 257 -61 -29 42 2 -28 18 6 -29 43 43 -28 16 26 0.31 37 59 59 -28 39 28 20 27 5.1 23 256 -62 -29 21 34 -27 57 31 -29 23 15 -27 55 51 0.31 38 59 59 -28 18 40 20 27 8.0 22 256 -63 -29 0 50 -27 36 40 -29 2 32 -27 34 59 0.32 39 59 59 -27 57 36 20 27 10.8 21 255 -64 -28 39 50 -27 15 32 -28 41 31 -27 13 52 0.32 40 59 59 -27 36 16 20 27 13.5 20 255 -64 -28 18 33 -26 54 9 -28 20 15 -26 52 28 0.32 42 0 0 -27 14 41 20 27 16.1 19 254 -65 -27 57 1 -26 32 30 -27 58 43 -26 30 49 0.32 43 0 0 -26 52 50 20 27 18.6 18 254 -66 -27 35 13 -26 10 36 -27 36 55 -26 8 55 0.32 44 0 0 -26 30 44 20 27 21.0 17 253 -67 -27 13 11 -25 48 27 -27 14 53 -25 46 46 0.32 45 0 0 -26 8 24 20 27 23.2 16 253 -67 -26 50 54 -25 26 4 -26 52 36 -25 24 23 0.32 46 0 0 -25 45 50 20 27 25.3 15 252 -68 -26 28 22 -25 3 27 -26 30 4 -25 1 46 0.32 47 0 0 -25 23 2 20 27 27.4 14 252 -68 -26 5 38 -24 40 37 -26 7 20 -24 38 56 0.32 48 0 0 -25 0 1 20 27 29.2 13 251 -69 -25 42 39 -24 17 34 -25 44 22 -24 15 52 0.33 49 0 0 -24 36 48 20 27 31.0 12 251 -70 -25 19 28 -23 54 18 -25 21 11 -23 52 36 0.33 50 0 0 -24 13 22 20 27 32.6 11 250 -70 -24 56 5 -23 30 50 -24 57 47 -23 29 8 0.33 51 0 0 -23 49 45 20 27 34.2 10 250 -71 -24 32 30 -23 7 10 -24 34 12 -23 5 29 0.33 52 0 0 -23 25 57 20 27 35.5 9 250 -71 -24 8 43 -22 43 20 -24 10 26 -22 41 38 0.34 53 0 0 -23 1 57 20 27 36.8 8 249 -71 -23 44 46 -22 19 19 -23 46 29 -22 17 37 0.34 54 0 0 -22 37 48 20 27 37.9 7 249 -72 -23 20 39 -21 55 8 -23 22 22 -21 53 26 0.35 55 0 0 -22 13 29 20 27 38.9 6 248 -72 -22 56 22 -21 30 48 -22 58 4 -21 29 6 0.35 56 0 0 -21 49 2 20 27 39.7 5 248 -72 -22 31 55 -21 6 19 -22 33 38 -21 4 37 0.36 57 0 0 -21 24 26 20 27 40.4 4 248 -72 -22 7 20 -20 41 41 -22 9 3 -20 39 59 0.37 58 0 0 -20 59 42 20 27 41.0 3 247 -73 -21 42 37 -20 16 56 -21 44 20 -20 15 14 0.40 59 0 0 -20 34 50 20 27 41.4 2 247 -73 -21 17 47 -19 52 4 -21 19 30 -19 50 22 0.43 60 0 0 -20 9 52 20 27 41.6 1 247 -73 -20 52 50 -19 27 5 -20 54 33 -19 25 23 0.53 61 0 0 -19 44 48 20 27 41.8 0 246 -72 -20 27 47 -19 2 1 -20 29 30 -19 0 18 1.23 Uncertainty in time = +/- 0 secs Prediction of 2023 Aug 27.0 Data for the target star ------------------------ * name: UCAC4 339-091483 * constellation : Ophiuchus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 17 20 25.3824 DE: -22 22 23.576 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 17 20 25.3823 DE: -22 22 23.576 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 11.1 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (20) Massalia asteroid class: ShapeModel approx. diameter [km]: 138 approx. diameter ["]: 0.076 distance from Earth [AU]: 2.52220 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#127 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): 0.003", 0.002", 93.486° remarks: * orbital elements for (20)Massalia : Mean anomaly = 178.4655334701 deg Arg. of pericenter = 257.4706531263 deg Long. of node = 205.9791209415 deg Inclination = 0.7092773391 deg Eccentricity = 0.1434661769 Semimajor axis = 2.4081837702 AU Perihelion dist = 2.0626908513 AU Mag: H = 6.54, G = 0.25 Epoch of elements : MJD 60198.84770833 TDT (2023 Sep 11.8477) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#1272023Aug22,9.39,2023,9,11,20.346212,-0.023507,-0.280667,8.282011,-0.693665,0.005660,-0.000380,0.000000,0.000000 -35.3263,-22.3977,-126.04,4.41,False UCAC4 339-091483,17.34038403,-22.3732155,0.00,11.08,0.00,0.0,0,,17.36405343,-22.3976583,1.21,0.00,0,0,0 20,Massalia,11.86,138.300,2.5222,0,0,2.083,-2.42,,7.2,0 0,178.2420,2023,9,11,257.4707,205.9791,0.7093,0.14347,2.40818,2.06269,6.61,5.0,0.15 1.020,0.0026,0.0015,93,0.0030,Known errors,-1.00,0,-1,-1 20230911_091483,60182.99 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Aug 26, 23:43 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org