IOTA/IOTA-ES occultation update for (1174) Marmara / UCAC4 405-134880 event on 2024 Dec 10, 17:33 UT Visible from Summary ------- On 2024 Dec 10 UT, the 17.745 km diameter asteroid (1174) Marmara will occult a 12.0 mag star in the constellation Aquarius for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 4.84 mag to 16.82 mag (the magnitude of the asteroid) for at most 0.740 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: 2024 Dec 10, 17:29 - 2024 Dec 10, 17:37 * geocentric midpoint of event [JD]: 2460655.23148346 * magnitude of target star: 11.99 * magnitude drop [mag]: 4.84 * estimated maximum duration [s]: 0.740 * Moon: 73 % sunlit, 39° distance * Sun: 79° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 19 * 1 sigma uncertainty interval [path widths]: +/- 0.30 * 1 sigma uncertainty interval [seconds]: +/- 1.6 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.017, +/- 0.011) * 1 sigma uncertainty ellipse (major, minor, PA): (0.020", 0.003", 58°) * approx speed of asteroid's shadow [km/s]: 24.0030 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 405-134880 by 1174 Marmara on 2024 Dec 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 ' " Latitude Latitude Latitude Latitude -102 0 0 -47 41 47 17 29 7.6 0 103 61 -47 46 58 -47 36 36 -47 50 4 -47 33 30 .... -101 0 0 -47 51 3 17 29 7.6 1 102 62 -47 56 13 -47 45 53 -47 59 19 -47 42 47 0.29 -100 0 0 -47 59 54 17 29 7.7 2 102 62 -48 5 3 -47 54 45 -48 8 9 -47 51 39 0.30 - 99 0 0 -48 8 21 17 29 7.8 2 101 62 -48 13 30 -48 3 12 -48 16 35 -48 0 7 0.31 - 98 0 0 -48 16 24 17 29 8.0 3 100 62 -48 21 32 -48 11 15 -48 24 37 -48 8 10 0.31 - 97 0 0 -48 24 2 17 29 8.2 4 99 63 -48 29 10 -48 18 55 -48 32 15 -48 15 50 0.31 - 96 0 0 -48 31 17 17 29 8.4 4 99 63 -48 36 24 -48 26 10 -48 39 29 -48 23 6 0.31 - 95 0 0 -48 38 8 17 29 8.7 5 98 63 -48 43 15 -48 33 2 -48 46 19 -48 29 58 0.31 - 94 0 0 -48 44 36 17 29 9.0 6 97 63 -48 49 42 -48 39 30 -48 52 46 -48 36 26 0.32 - 93 0 0 -48 50 40 17 29 9.4 6 96 63 -48 55 46 -48 45 34 -48 58 49 -48 42 31 0.32 - 92 0 0 -48 56 20 17 29 9.7 7 96 63 -49 1 26 -48 51 15 -49 4 29 -48 48 12 0.32 - 91 0 0 -49 1 38 17 29 10.2 8 95 63 -49 6 43 -48 56 33 -49 9 46 -48 53 30 0.32 - 90 0 0 -49 6 32 17 29 10.6 8 94 63 -49 11 36 -49 1 27 -49 14 39 -48 58 25 0.32 - 89 0 0 -49 11 3 17 29 11.1 9 93 63 -49 16 7 -49 5 59 -49 19 10 -49 2 56 0.32 - 88 0 0 -49 15 11 17 29 11.6 10 93 64 -49 20 15 -49 10 7 -49 23 17 -49 7 5 0.32 - 87 0 0 -49 18 56 17 29 12.2 10 92 64 -49 23 59 -49 13 52 -49 27 2 -49 10 50 0.32 - 86 0 0 -49 22 18 17 29 12.8 11 91 64 -49 27 21 -49 17 15 -49 30 24 -49 14 13 0.32 - 85 0 0 -49 25 17 17 29 13.4 12 90 64 -49 30 20 -49 20 14 -49 33 23 -49 17 13 0.32 - 84 0 0 -49 27 54 17 29 14.1 12 89 63 -49 32 57 -49 22 51 -49 35 59 -49 19 50 0.32 - 83 0 0 -49 30 8 17 29 14.8 13 89 63 -49 35 11 -49 25 5 -49 38 12 -49 22 4 0.32 - 82 0 0 -49 31 59 17 29 15.5 14 88 63 -49 37 2 -49 26 57 -49 40 3 -49 23 55 0.32 - 81 0 0 -49 33 28 17 29 16.3 14 87 63 -49 38 30 -49 28 25 -49 41 32 -49 25 24 0.32 - 80 0 0 -49 34 34 17 29 17.1 15 86 63 -49 39 36 -49 29 31 -49 42 37 -49 26 30 0.32 - 79 0 0 -49 35 17 17 29 17.9 16 86 63 -49 40 19 -49 30 15 -49 43 21 -49 27 13 0.32 - 78 0 0 -49 35 38 17 29 18.8 16 85 63 -49 40 40 -49 30 35 -49 43 41 -49 27 34 0.32 - 77 0 0 -49 35 36 17 29 19.7 17 84 63 -49 40 38 -49 30 34 -49 43 39 -49 27 32 0.32 - 76 0 0 -49 35 11 17 29 20.6 18 83 63 -49 40 13 -49 30 9 -49 43 15 -49 27 8 0.32 - 75 0 0 -49 34 24 17 29 21.6 18 82 62 -49 39 26 -49 29 22 -49 42 28 -49 26 20 0.32 - 74 0 0 -49 33 14 17 29 22.6 19 82 62 -49 38 16 -49 28 12 -49 41 18 -49 25 10 0.32 - 73 0 0 -49 31 42 17 29 23.7 19 81 62 -49 36 44 -49 26 39 -49 39 46 -49 23 38 0.32 - 72 0 0 -49 29 46 17 29 24.8 20 80 62 -49 34 49 -49 24 44 -49 37 51 -49 21 42 0.32 - 71 0 0 -49 27 28 17 29 25.9 21 79 62 -49 32 31 -49 22 26 -49 35 33 -49 19 24 0.32 - 70 0 0 -49 24 47 17 29 27.0 21 79 61 -49 29 50 -49 19 45 -49 32 52 -49 16 43 0.32 - 69 0 0 -49 21 44 17 29 28.2 22 78 61 -49 26 47 -49 16 41 -49 29 49 -49 13 39 0.32 - 68 0 0 -49 18 17 17 29 29.4 23 77 61 -49 23 20 -49 13 14 -49 26 23 -49 10 11 0.32 - 67 0 0 -49 14 27 17 29 30.7 23 76 60 -49 19 31 -49 9 23 -49 22 33 -49 6 21 0.32 - 66 0 0 -49 10 14 17 29 32.0 24 75 60 -49 15 18 -49 5 10 -49 18 21 -49 2 8 0.32 - 65 0 0 -49 5 38 17 29 33.3 25 75 60 -49 10 42 -49 0 33 -49 13 45 -48 57 31 0.32 - 64 0 0 -49 0 38 17 29 34.7 25 74 59 -49 5 43 -48 55 33 -49 8 46 -48 52 30 0.32 - 63 0 0 -48 55 15 17 29 36.1 26 73 59 -49 0 20 -48 50 10 -49 3 23 -48 47 7 0.32 - 62 0 0 -48 49 28 17 29 37.6 27 72 59 -48 54 33 -48 44 22 -48 57 37 -48 41 19 0.32 - 61 0 0 -48 43 17 17 29 39.1 27 71 58 -48 48 23 -48 38 11 -48 51 27 -48 35 8 0.32 - 60 0 0 -48 36 43 17 29 40.6 28 71 58 -48 41 49 -48 31 36 -48 44 53 -48 28 33 0.32 - 59 0 0 -48 29 44 17 29 42.2 29 70 58 -48 34 51 -48 24 37 -48 37 56 -48 21 33 0.32 - 58 0 0 -48 22 22 17 29 43.8 29 69 57 -48 27 29 -48 17 14 -48 30 34 -48 14 10 0.32 - 57 0 0 -48 14 35 17 29 45.4 30 68 57 -48 19 43 -48 9 27 -48 22 48 -48 6 22 0.32 - 56 0 0 -48 6 23 17 29 47.1 31 67 56 -48 11 32 -48 1 15 -48 14 37 -47 58 9 0.32 - 55 0 0 -47 57 47 17 29 48.8 31 66 56 -48 2 56 -47 52 38 -48 6 2 -47 49 32 0.32 - 54 0 0 -47 48 46 17 29 50.6 32 66 55 -47 53 56 -47 43 36 -47 57 2 -47 40 30 0.32 - 53 0 0 -47 39 20 17 29 52.4 33 65 55 -47 44 30 -47 34 9 -47 47 37 -47 31 3 0.32 - 52 0 0 -47 29 28 17 29 54.3 33 64 54 -47 34 40 -47 24 17 -47 37 47 -47 21 11 0.32 - 51 0 0 -47 19 12 17 29 56.2 34 63 54 -47 24 24 -47 14 0 -47 27 31 -47 10 53 0.32 - 50 0 0 -47 8 29 17 29 58.2 35 62 53 -47 13 42 -47 3 17 -47 16 50 -47 0 9 0.32 - 49 0 0 -46 57 21 17 30 0.2 35 61 53 -47 2 34 -46 52 8 -47 5 43 -46 49 0 0.32 - 48 0 0 -46 45 47 17 30 2.2 36 61 52 -46 51 1 -46 40 33 -46 54 10 -46 37 24 0.32 - 47 0 0 -46 33 46 17 30 4.3 37 60 52 -46 39 1 -46 28 31 -46 42 10 -46 25 22 0.32 - 46 0 0 -46 21 19 17 30 6.5 38 59 51 -46 26 35 -46 16 3 -46 29 45 -46 12 54 0.32 - 45 0 0 -46 8 25 17 30 8.7 38 58 51 -46 13 42 -46 3 9 -46 16 52 -45 59 59 0.32 - 44 0 0 -45 55 5 17 30 10.9 39 57 50 -46 0 22 -45 49 47 -46 3 33 -45 46 37 0.32 - 43 0 0 -45 41 17 17 30 13.2 40 56 50 -45 46 35 -45 35 59 -45 49 47 -45 32 48 0.32 - 42 0 0 -45 27 2 17 30 15.5 40 55 49 -45 32 21 -45 21 42 -45 35 33 -45 18 31 0.32 - 41 0 0 -45 12 19 17 30 17.9 41 54 48 -45 17 39 -45 6 59 -45 20 52 -45 3 47 0.32 - 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27 0 0 -40 56 2 17 30 57.4 52 41 39 -41 1 37 -40 50 27 -41 4 59 -40 47 6 0.32 - 26 0 0 -40 34 1 17 31 0.7 52 39 38 -40 39 37 -40 28 24 -40 42 59 -40 25 3 0.32 - 25 0 0 -40 11 28 17 31 4.0 53 38 37 -40 17 6 -40 5 51 -40 20 29 -40 2 29 0.32 - 24 0 0 -39 48 26 17 31 7.4 54 37 37 -39 54 4 -39 42 47 -39 57 28 -39 39 24 0.32 - 23 0 0 -39 24 52 17 31 10.9 55 36 36 -39 30 32 -39 19 13 -39 33 56 -39 15 49 0.32 - 22 0 0 -39 0 48 17 31 14.4 56 35 35 -39 6 29 -38 55 7 -39 9 54 -38 51 43 0.32 - 21 0 0 -38 36 13 17 31 18.0 56 33 34 -38 41 55 -38 30 31 -38 45 20 -38 27 6 0.32 - 20 0 0 -38 11 7 17 31 21.7 57 32 33 -38 16 50 -38 5 25 -38 20 17 -38 1 59 0.32 - 19 0 0 -37 45 31 17 31 25.4 58 31 33 -37 51 15 -37 39 47 -37 54 42 -37 36 20 0.32 - 18 0 0 -37 19 24 17 31 29.2 59 29 32 -37 25 9 -37 13 39 -37 28 37 -37 10 12 0.32 - 17 0 0 -36 52 46 17 31 33.1 59 28 31 -36 58 32 -36 47 0 -37 2 1 -36 43 32 0.32 - 16 0 0 -36 25 38 17 31 37.0 60 26 30 -36 31 25 -36 19 51 -36 34 54 -36 16 22 0.32 - 15 0 0 -35 57 59 17 31 41.0 61 25 29 -36 3 48 -35 52 11 -36 7 17 -35 48 42 0.32 - 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9 55 45 -10 11 17 - 9 52 10 0.33 30 0 0 - 9 24 44 17 35 22.4 56 268 -19 - 9 30 41 - 9 18 46 - 9 34 16 - 9 15 12 0.33 31 0 0 - 8 48 0 17 35 27.1 55 267 -20 - 8 53 56 - 8 42 3 - 8 57 31 - 8 38 29 0.33 32 0 0 - 8 11 32 17 35 31.8 54 266 -22 - 8 17 28 - 8 5 36 - 8 21 1 - 8 2 3 0.33 33 0 0 - 7 35 22 17 35 36.4 53 265 -23 - 7 41 17 - 7 29 27 - 7 44 50 - 7 25 54 0.33 34 0 0 - 6 59 30 17 35 40.9 52 264 -24 - 7 5 24 - 6 53 36 - 7 8 57 - 6 50 4 0.33 35 0 0 - 6 23 59 17 35 45.4 51 264 -25 - 6 29 52 - 6 18 6 - 6 33 24 - 6 14 34 0.33 36 0 0 - 5 48 48 17 35 49.8 50 263 -26 - 5 54 40 - 5 42 56 - 5 58 11 - 5 39 25 0.33 37 0 0 - 5 13 59 17 35 54.1 49 262 -27 - 5 19 50 - 5 8 8 - 5 23 21 - 5 4 38 0.33 38 0 0 - 4 39 33 17 35 58.4 48 262 -29 - 4 45 23 - 4 33 43 - 4 48 53 - 4 30 13 0.33 39 0 0 - 4 5 30 17 36 2.5 47 261 -30 - 4 11 19 - 3 59 42 - 4 14 49 - 3 56 12 0.33 40 0 0 - 3 31 53 17 36 6.6 46 261 -31 - 3 37 41 - 3 26 5 - 3 41 9 - 3 22 36 0.33 41 0 0 - 2 58 40 17 36 10.6 45 260 -32 - 3 4 27 - 2 52 54 - 3 7 55 - 2 49 26 0.34 42 0 0 - 2 25 54 17 36 14.5 44 260 -33 - 2 31 40 - 2 20 9 - 2 35 7 - 2 16 41 0.34 43 0 0 - 1 53 35 17 36 18.3 42 260 -34 - 1 59 19 - 1 47 51 - 2 2 46 - 1 44 24 0.34 44 0 0 - 1 21 43 17 36 22.0 41 259 -35 - 1 27 27 - 1 16 0 - 1 30 53 - 1 12 34 0.34 45 0 0 - 0 50 20 17 36 25.7 40 259 -37 - 0 56 3 - 0 44 38 - 0 59 28 - 0 41 13 0.34 46 0 0 - 0 19 26 17 36 29.2 39 259 -38 - 0 25 7 - 0 13 45 - 0 28 32 - 0 10 20 0.34 47 0 0 0 10 59 17 36 32.6 38 258 -39 0 5 19 0 16 38 0 1 54 0 20 2 0.34 48 0 0 0 40 53 17 36 36.0 37 258 -40 0 35 14 0 46 32 0 31 51 0 49 55 0.34 49 0 0 1 10 17 17 36 39.2 36 258 -41 1 4 39 1 15 55 1 1 16 1 19 17 0.34 50 0 0 1 39 10 17 36 42.4 35 258 -42 1 33 33 1 44 46 1 30 11 1 48 8 0.34 51 0 0 2 7 31 17 36 45.5 34 258 -43 2 1 55 2 13 6 1 58 34 2 16 27 0.34 52 0 0 2 35 20 17 36 48.4 33 258 -44 2 29 46 2 40 54 2 26 25 2 44 15 0.34 53 0 0 3 2 37 17 36 51.3 32 258 -46 2 57 3 3 8 10 2 53 43 3 11 30 0.34 54 0 0 3 29 21 17 36 54.0 30 257 -47 3 23 49 3 34 53 3 20 29 3 38 12 0.34 55 0 0 3 55 32 17 36 56.7 29 257 -48 3 50 1 4 1 3 3 46 42 4 4 22 0.34 56 0 0 4 21 10 17 36 59.3 28 257 -49 4 15 40 4 26 40 4 12 22 4 29 58 0.34 57 0 0 4 46 14 17 37 1.8 27 257 -50 4 40 45 4 51 43 4 37 28 4 55 0 0.34 58 0 0 5 10 45 17 37 4.1 26 257 -51 5 5 17 5 16 12 5 2 0 5 19 29 0.34 59 0 0 5 34 41 17 37 6.4 25 257 -52 5 29 14 5 40 8 5 25 58 5 43 24 0.34 60 0 0 5 58 3 17 37 8.6 24 257 -53 5 52 38 6 3 29 5 49 22 6 6 45 0.34 61 0 0 6 20 51 17 37 10.6 23 257 -54 6 15 27 6 26 16 6 12 12 6 29 31 0.34 62 0 0 6 43 5 17 37 12.6 22 258 -55 6 37 41 6 48 29 6 34 27 6 51 43 0.34 63 0 0 7 4 44 17 37 14.5 21 258 -56 6 59 21 7 10 7 6 56 7 7 13 20 0.34 64 0 0 7 25 48 17 37 16.3 20 258 -57 7 20 26 7 31 10 7 17 13 7 34 23 0.34 65 0 0 7 46 18 17 37 18.0 19 258 -58 7 40 57 7 51 39 7 37 44 7 54 51 0.34 66 0 0 8 6 13 17 37 19.6 18 258 -59 8 0 53 8 11 32 7 57 40 8 14 44 0.34 67 0 0 8 25 33 17 37 21.1 17 258 -60 8 20 14 8 30 51 8 17 2 8 34 3 0.34 68 0 0 8 44 18 17 37 22.5 16 258 -61 8 38 59 8 49 36 8 35 48 8 52 46 0.35 69 0 0 9 2 28 17 37 23.8 15 258 -62 8 57 10 9 7 45 8 54 0 9 10 55 0.35 70 0 0 9 20 3 17 37 25.0 14 258 -63 9 14 47 9 25 19 9 11 36 9 28 29 0.35 71 0 0 9 37 3 17 37 26.2 13 258 -64 9 31 48 9 42 19 9 28 38 9 45 28 0.35 72 0 0 9 53 29 17 37 27.2 11 259 -65 9 48 14 9 58 43 9 45 5 10 1 52 0.35 73 0 0 10 9 19 17 37 28.2 10 259 -66 10 4 5 10 14 33 10 0 57 10 17 42 0.35 74 0 0 10 24 35 17 37 29.0 9 259 -67 10 19 22 10 29 48 10 16 14 10 32 56 0.35 75 0 0 10 39 16 17 37 29.8 8 259 -68 10 34 3 10 44 28 10 30 56 10 47 36 0.36 76 0 0 10 53 22 17 37 30.5 7 259 -69 10 48 10 10 58 34 10 45 3 11 1 41 0.36 77 0 0 11 6 54 17 37 31.1 6 260 -70 11 1 42 11 12 5 10 58 35 11 15 11 0.36 78 0 0 11 19 50 17 37 31.6 5 260 -71 11 14 40 11 25 1 11 11 33 11 28 7 0.37 79 0 0 11 32 13 17 37 32.0 4 260 -72 11 27 3 11 37 22 11 23 56 11 40 28 0.38 80 0 0 11 44 0 17 37 32.3 3 260 -73 11 38 51 11 49 10 11 35 45 11 52 15 0.39 81 0 0 11 55 13 17 37 32.5 2 260 -73 11 50 5 12 0 22 11 46 59 12 3 27 0.42 82 0 0 12 5 52 17 37 32.7 1 261 -74 12 0 44 12 11 0 11 57 39 12 14 5 0.48 83 0 0 12 15 57 17 37 32.8 0 261 -75 12 10 49 12 21 4 12 7 44 12 24 9 0.85 Uncertainty in time = +/- 2 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: UCAC4 405-134880 * constellation : Aquarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 22 37 33.5680 DE: -09 06 48.567 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 22 37 33.5678 DE: -09 06 48.569 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 12.0 * B mag [mag]: 12.4 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (1174) Marmara asteroid class: approx. diameter [km]: 18 approx. diameter ["]: 0.009 distance from Earth [AU]: 2.70450 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#57 date of fit: 2023 Apr 24 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): 0.020", 0.003", 58.073° remarks: * orbital elements for (1174)Marmara : Mean anomaly = 2.9668205321 deg Arg. of pericenter = 353.9448507081 deg Long. of node = 0.8794159988 deg Inclination = 10.0635679592 deg Eccentricity = 0.1098173035 Semimajor axis = 3.0227301994 AU Perihelion dist = 2.6907821197 AU Mag: H = 11.48, G = 0.15 Epoch of elements : MJD 60654.73148329 TDT (2024 Dec 10.7315) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#572023Apr24,0.74,2024,12,10,17.555603,0.155619,-0.264800,11.697378,6.835052,0.005359,0.002145,0.000000,0.000000 -3.5539,-8.9848,-85.05,-23.00,False UCAC4 405-134880,22.62599115,-9.1134907,12.36,11.99,11.79,0.0,4,,22.64773682,-8.9848494,4.84,4.60,0,0,0 1174,Marmara,16.82,17.745,2.7045,0,0,2.567,22.23,,1.2,0 0,2.8296,2024,12,10,353.9449,0.8794,10.0636,0.10982,3.02273,2.69078,11.48,5.0,0.15 1.300,0.0200,0.0027,58,0.0027,Known errors,0.98,0,-1,-1 20241210_134880,60140.73 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 17:38 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org