IOTA/IOTA-ES occultation update for (735) Marghanna / UCAC4 229-122548 event on 2024 Jul 24, 21:18 UT Visible from Summary ------- On 2024 Jul 24 UT, the 73.6179726407256 km diameter asteroid (735) Marghanna will occult a 11.8 mag star in the constellation Scorpius for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 1.84 mag to 13.43 mag (the magnitude of the asteroid) for at most 19.240 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: 2024 Jul 24, 20:52 - 2024 Jul 24, 21:45 * geocentric midpoint of event [JD]: 2460516.38812659 * magnitude of target star: 11.81 * magnitude drop [mag]: 1.84 * estimated maximum duration [s]: 19.240 * Moon: 84 % sunlit, 92° distance * Sun: 131° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 80 * 1 sigma uncertainty interval [path widths]: +/- 0.07 * 1 sigma uncertainty interval [seconds]: +/- 5.0 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.016, +/- 0.009) * 1 sigma uncertainty ellipse (major, minor, PA): (0.018", 0.004", 118°) * approx speed of asteroid's shadow [km/s]: 3.8310 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 229-122548 by 735 Marghanna on 2024 Jul 24 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 - 71 0 0 29 40 49 21 44 35.3 0 144 23 .. .. .. 29 3 23 .. .. .. 28 58 17 .... - 70 0 0 28 29 41 21 44 34.5 2 144 22 29 7 14 27 52 28 29 12 25 27 47 23 -0.17 - 69 0 0 27 18 26 21 44 32.6 3 145 21 27 55 45 26 41 26 28 0 54 26 36 24 -0.32 - 68 0 0 26 7 10 21 44 29.4 5 145 20 26 44 14 25 30 25 26 49 21 25 25 24 -0.37 - 67 0 0 24 55 58 21 44 25.1 6 145 19 25 32 47 24 19 29 25 37 51 24 14 30 -0.40 - 66 0 0 23 44 56 21 44 19.5 8 146 18 24 21 28 23 8 43 24 26 30 23 3 47 -0.42 - 65 0 0 22 34 10 21 44 12.8 9 146 17 23 10 24 21 58 14 23 15 23 21 53 20 -0.44 - 64 0 0 21 23 43 21 44 4.9 11 147 16 21 59 39 20 48 5 22 4 36 20 43 14 -0.44 - 63 0 0 20 13 42 21 43 55.9 12 147 14 20 49 19 19 38 22 20 54 13 19 33 33 -0.45 - 62 0 0 19 4 10 21 43 45.7 14 147 13 19 39 27 18 29 9 19 44 18 18 24 22 -0.46 - 61 0 0 17 55 10 21 43 34.5 15 148 12 18 30 8 17 20 29 18 34 57 17 15 45 -0.46 - 60 0 0 16 46 48 21 43 22.1 16 148 11 17 21 26 16 12 26 17 26 12 16 7 44 -0.46 - 59 0 0 15 39 6 21 43 8.8 18 148 10 16 13 24 15 5 3 16 18 7 15 0 25 -0.47 - 58 0 0 14 32 7 21 42 54.5 19 149 8 15 6 5 13 58 24 15 10 46 13 53 48 -0.47 - 57 0 0 13 25 55 21 42 39.2 21 149 7 13 59 33 12 52 32 14 4 11 12 47 59 -0.47 - 56 0 0 12 20 32 21 42 23.0 22 149 6 12 53 49 11 47 28 12 58 24 11 42 57 -0.47 - 55 0 0 11 15 59 21 42 6.0 24 150 5 11 48 57 10 43 15 11 53 29 10 38 47 -0.47 - 54 0 0 10 12 20 21 41 48.1 25 150 4 10 44 58 9 39 55 10 49 27 9 35 30 -0.47 - 53 0 0 9 9 35 21 41 29.4 26 150 2 9 41 53 8 37 30 9 46 20 8 33 7 -0.47 - 52 0 0 8 7 47 21 41 10.0 28 150 1 8 39 45 7 36 1 8 44 9 7 31 40 -0.47 - 51 0 0 7 6 56 21 40 49.9 29 151 0 7 38 35 6 35 28 7 42 56 6 31 11 -0.47 - 50 0 0 6 7 4 21 40 29.1 30 151 -1 6 38 24 5 35 55 6 42 43 5 31 40 -0.47 - 49 0 0 5 8 11 21 40 7.7 32 151 -2 5 39 13 4 37 20 5 43 29 4 33 8 -0.47 - 48 0 0 4 10 19 21 39 45.7 33 152 -4 4 41 2 3 39 46 4 45 16 3 35 36 -0.47 - 47 0 0 3 13 27 21 39 23.1 34 152 -5 3 43 53 2 43 13 3 48 4 2 39 5 -0.47 - 46 0 0 2 17 38 21 39 0.0 35 152 -6 2 47 45 1 47 40 2 51 54 1 43 34 -0.46 - 45 0 0 1 22 49 21 38 36.5 36 152 -7 1 52 40 0 53 9 1 56 46 0 49 6 -0.46 - 44 0 0 0 29 3 21 38 12.5 38 153 -8 0 58 37 - 0 0 21 1 2 41 - 0 4 22 -0.46 - 43 0 0 - 0 23 41 21 37 48.2 39 153 -9 0 5 36 - 0 52 49 0 9 38 - 0 56 47 -0.46 - 42 0 0 - 1 15 23 21 37 23.4 40 153 -11 - 0 46 22 - 1 44 15 - 0 42 23 - 1 48 11 -0.46 - 41 0 0 - 2 6 3 21 36 58.4 41 154 -12 - 1 37 18 - 2 34 39 - 1 33 21 - 2 38 34 -0.46 - 40 0 0 - 2 55 41 21 36 33.0 42 154 -13 - 2 27 12 - 3 24 2 - 2 23 17 - 3 27 55 -0.46 - 39 0 0 - 3 44 18 21 36 7.3 43 154 -14 - 3 16 3 - 4 12 24 - 3 12 11 - 4 16 14 -0.45 - 38 0 0 - 4 31 53 21 35 41.4 45 155 -15 - 4 3 53 - 4 59 44 - 4 0 2 - 5 3 33 -0.45 - 37 0 0 - 5 18 27 21 35 15.2 46 155 -16 - 4 50 42 - 5 46 4 - 4 46 53 - 5 49 51 -0.45 - 36 0 0 - 6 4 0 21 34 48.9 47 156 -17 - 5 36 29 - 6 31 24 - 5 32 42 - 6 35 9 -0.45 - 35 0 0 - 6 48 34 21 34 22.4 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2 58 -23 53 42 -0.41 1 0 0 -23 43 0 21 18 29.1 68 199 -52 -23 20 43 -24 5 13 -23 17 40 -24 8 15 -0.41 2 0 0 -23 56 57 21 18 4.4 68 200 -53 -23 34 44 -24 19 5 -23 31 41 -24 22 7 -0.41 3 0 0 -24 10 13 21 17 39.7 68 202 -53 -23 48 4 -24 32 18 -23 45 2 -24 35 19 -0.41 4 0 0 -24 22 49 21 17 15.2 67 204 -54 -24 0 44 -24 44 50 -23 57 42 -24 47 51 -0.41 5 0 0 -24 34 45 21 16 50.9 67 205 -55 -24 12 44 -24 56 43 -24 9 42 -24 59 44 -0.41 6 0 0 -24 46 2 21 16 26.6 67 207 -56 -24 24 3 -25 7 57 -24 21 2 -25 10 57 -0.41 7 0 0 -24 56 39 21 16 2.5 67 208 -57 -24 34 44 -25 18 31 -24 31 43 -25 21 31 -0.41 8 0 0 -25 6 37 21 15 38.5 67 210 -57 -24 44 45 -25 28 27 -24 41 45 -25 31 26 -0.41 9 0 0 -25 15 57 21 15 14.6 66 211 -58 -24 54 7 -25 37 43 -24 51 7 -25 40 42 -0.41 10 0 0 -25 24 38 21 14 50.8 66 213 -59 -25 2 50 -25 46 22 -24 59 51 -25 49 20 -0.41 11 0 0 -25 32 40 21 14 27.2 66 214 -60 -25 10 55 -25 54 22 -25 7 55 -25 57 20 -0.41 12 0 0 -25 40 4 21 14 3.7 65 215 -61 -25 18 21 -26 1 44 -25 15 22 -26 4 42 -0.41 13 0 0 -25 46 50 21 13 40.3 65 216 -61 -25 25 9 -26 8 28 -25 22 10 -26 11 26 -0.41 14 0 0 -25 52 58 21 13 17.0 65 218 -62 -25 31 18 -26 14 34 -25 28 20 -26 17 32 -0.41 15 0 0 -25 58 28 21 12 53.9 64 219 -63 -25 36 50 -26 20 3 -25 33 51 -26 23 0 -0.41 16 0 0 -26 3 20 21 12 30.9 64 220 -64 -25 41 43 -26 24 54 -25 38 45 -26 27 51 -0.41 17 0 0 -26 7 35 21 12 7.9 63 221 -65 -25 45 59 -26 29 8 -25 43 1 -26 32 4 -0.41 18 0 0 -26 11 12 21 11 45.2 63 221 -65 -25 49 37 -26 32 44 -25 46 39 -26 35 40 -0.41 19 0 0 -26 14 11 21 11 22.5 62 222 -66 -25 52 37 -26 35 42 -25 49 39 -26 38 39 -0.41 20 0 0 -26 16 33 21 11 0.0 62 223 -67 -25 54 59 -26 38 4 -25 52 2 -26 41 0 -0.41 21 0 0 -26 18 18 21 10 37.5 61 224 -68 -25 56 44 -26 39 48 -25 53 46 -26 42 44 -0.41 22 0 0 -26 19 24 21 10 15.2 61 224 -69 -25 57 51 -26 40 54 -25 54 53 -26 43 51 -0.41 23 0 0 -26 19 54 21 9 53.0 60 225 -69 -25 58 20 -26 41 24 -25 55 23 -26 44 20 -0.41 24 0 0 -26 19 45 21 9 31.0 59 226 -70 -25 58 12 -26 41 16 -25 55 14 -26 44 12 -0.41 25 0 0 -26 18 59 21 9 9.0 59 226 -71 -25 57 25 -26 40 30 -25 54 27 -26 43 27 -0.41 26 0 0 -26 17 36 21 8 47.2 58 227 -72 -25 56 1 -26 39 7 -25 53 3 -26 42 4 -0.41 27 0 0 -26 15 34 21 8 25.4 58 227 -72 -25 53 58 -26 37 6 -25 51 0 -26 40 3 -0.41 28 0 0 -26 12 54 21 8 3.8 57 228 -73 -25 51 18 -26 34 28 -25 48 20 -26 37 25 -0.41 29 0 0 -26 9 37 21 7 42.3 56 228 -74 -25 47 59 -26 31 11 -25 45 0 -26 34 8 -0.41 30 0 0 -26 5 41 21 7 21.0 56 228 -75 -25 44 1 -26 27 17 -25 41 3 -26 30 14 -0.41 31 0 0 -26 1 6 21 6 59.7 55 229 -76 -25 39 25 -26 22 44 -25 36 26 -26 25 41 -0.41 32 0 0 -25 55 53 21 6 38.6 54 229 -76 -25 34 10 -26 17 32 -25 31 11 -26 20 30 -0.41 33 0 0 -25 50 1 21 6 17.6 54 229 -77 -25 28 16 -26 11 42 -25 25 17 -26 14 40 -0.42 34 0 0 -25 43 30 21 5 56.7 53 229 -78 -25 21 42 -26 5 13 -25 18 43 -26 8 12 -0.42 35 0 0 -25 36 19 21 5 35.9 52 230 -79 -25 14 29 -25 58 5 -25 11 29 -26 1 4 -0.42 36 0 0 -25 28 29 21 5 15.3 52 230 -79 -25 6 36 -25 50 18 -25 3 36 -25 53 17 -0.42 37 0 0 -25 19 58 21 4 54.7 51 230 -80 -24 58 3 -25 41 50 -24 55 2 -25 44 50 -0.42 38 0 0 -25 10 48 21 4 34.4 50 230 -81 -24 48 49 -25 32 42 -24 45 48 -25 35 42 -0.42 39 0 0 -25 0 56 21 4 14.1 49 230 -82 -24 38 54 -25 22 54 -24 35 53 -25 25 55 -0.42 40 0 0 -24 50 24 21 3 54.0 49 230 -82 -24 28 18 -25 12 26 -24 25 16 -25 15 26 -0.42 41 0 0 -24 39 10 21 3 34.0 48 230 -83 -24 17 0 -25 1 15 -24 13 58 -25 4 17 -0.42 42 0 0 -24 27 14 21 3 14.1 47 230 -84 -24 5 1 -24 49 24 -24 1 57 -24 52 25 -0.42 43 0 0 -24 14 36 21 2 54.4 46 230 -84 -23 52 18 -24 36 50 -23 49 14 -24 39 52 -0.43 44 0 0 -24 1 15 21 2 34.8 46 230 -85 -23 38 52 -24 23 33 -23 35 48 -24 26 36 -0.43 45 0 0 -23 47 10 21 2 15.4 45 230 -85 -23 24 43 -24 9 33 -23 21 38 -24 12 37 -0.43 46 0 0 -23 32 22 21 1 56.1 44 230 -86 -23 9 50 -23 54 50 -23 6 44 -23 57 55 -0.43 47 0 0 -23 16 49 21 1 37.0 43 230 -86 -22 54 12 -23 39 23 -22 51 6 -23 42 28 -0.43 48 0 0 -23 0 32 21 1 18.1 42 230 -86 -22 37 49 -23 23 10 -22 34 42 -23 26 16 -0.43 49 0 0 -22 43 28 21 0 59.3 42 230 -86 -22 20 40 -23 6 13 -22 17 32 -23 9 20 -0.43 50 0 0 -22 25 39 21 0 40.7 41 230 -85 -22 2 44 -22 48 29 -21 59 35 -22 51 37 -0.43 51 0 0 -22 7 2 21 0 22.2 40 230 -85 -21 44 1 -22 29 59 -21 40 52 -22 33 8 -0.44 52 0 0 -21 47 39 21 0 4.0 39 230 -84 -21 24 31 -22 10 42 -21 21 20 -22 13 51 -0.44 53 0 0 -21 27 26 20 59 45.9 38 230 -84 -21 4 12 -21 50 37 -21 1 0 -21 53 47 -0.44 54 0 0 -21 6 25 20 59 28.1 37 230 -83 -20 43 3 -21 29 43 -20 39 51 -21 32 54 -0.44 55 0 0 -20 44 34 20 59 10.5 36 230 -82 -20 21 5 -21 7 59 -20 17 51 -21 11 11 -0.44 56 0 0 -20 21 53 20 58 53.0 35 229 -81 -19 58 15 -20 45 25 -19 55 1 -20 48 38 -0.44 57 0 0 -19 58 20 20 58 35.9 35 229 -80 -19 34 34 -20 22 0 -19 31 18 -20 25 14 -0.45 58 0 0 -19 33 54 20 58 18.9 34 229 -80 -19 10 0 -19 57 43 -19 6 44 -20 0 59 -0.45 59 0 0 -19 8 36 20 58 2.2 33 229 -79 -18 44 33 -19 32 34 -18 41 15 -19 35 50 -0.45 60 0 0 -18 42 23 20 57 45.8 32 229 -78 -18 18 11 -19 6 30 -18 14 52 -19 9 48 -0.45 61 0 0 -18 15 16 20 57 29.7 31 229 -77 -17 50 54 -18 39 32 -17 47 34 -18 42 51 -0.45 62 0 0 -17 47 12 20 57 13.8 30 229 -76 -17 22 41 -18 11 38 -17 19 19 -18 14 59 -0.46 63 0 0 -17 18 12 20 56 58.3 29 228 -75 -16 53 30 -17 42 48 -16 50 7 -17 46 10 -0.46 64 0 0 -16 48 13 20 56 43.0 28 228 -74 -16 23 21 -17 13 0 -16 19 56 -17 16 23 -0.46 65 0 0 -16 17 16 20 56 28.1 27 228 -73 -15 52 12 -16 42 13 -15 48 46 -16 45 38 -0.46 66 0 0 -15 45 18 20 56 13.6 26 228 -72 -15 20 3 -16 10 26 -15 16 35 -16 13 53 -0.46 67 0 0 -15 12 19 20 55 59.4 25 228 -71 -14 46 52 -15 37 39 -14 43 22 -15 41 7 -0.47 68 0 0 -14 38 17 20 55 45.6 24 228 -70 -14 12 38 -15 3 49 -14 9 7 -15 7 19 -0.47 69 0 0 -14 3 12 20 55 32.3 23 227 -69 -13 37 20 -14 28 57 -13 33 47 -14 32 28 -0.47 70 0 0 -13 27 2 20 55 19.3 22 227 -68 -13 0 57 -13 53 0 -12 57 22 -13 56 33 -0.47 71 0 0 -12 49 46 20 55 6.9 20 227 -67 -12 23 28 -13 15 57 -12 19 51 -13 19 32 -0.47 72 0 0 -12 11 22 20 54 54.9 19 227 -66 -11 44 50 -12 37 48 -11 41 11 -12 41 24 -0.48 73 0 0 -11 31 51 20 54 43.4 18 227 -65 -11 5 4 -11 58 30 -11 1 23 -12 2 9 -0.48 74 0 0 -10 51 9 20 54 32.4 17 227 -63 -10 24 7 -11 18 3 -10 20 24 -11 21 44 -0.48 75 0 0 -10 9 16 20 54 22.1 16 227 -62 - 9 41 59 -10 36 26 - 9 38 14 -10 40 9 -0.48 76 0 0 - 9 26 11 20 54 12.2 15 227 -61 - 8 58 38 - 9 53 37 - 8 54 50 - 9 57 22 -0.49 77 0 0 - 8 41 53 20 54 3.1 13 226 -60 - 8 14 3 - 9 9 35 - 8 10 13 - 9 13 22 -0.49 78 0 0 - 7 56 20 20 53 54.5 12 226 -59 - 7 28 12 - 8 24 19 - 7 24 20 - 8 28 8 -0.49 79 0 0 - 7 9 30 20 53 46.7 11 226 -58 - 6 41 5 - 7 37 47 - 6 37 10 - 7 41 38 -0.50 80 0 0 - 6 21 23 20 53 39.6 10 226 -56 - 5 52 39 - 6 49 58 - 5 48 42 - 6 53 52 -0.50 81 0 0 - 5 31 58 20 53 33.2 9 226 -55 - 5 2 55 - 6 0 51 - 4 58 55 - 6 4 48 -0.50 82 0 0 - 4 41 13 20 53 27.7 7 226 -54 - 4 11 50 - 5 10 25 - 4 7 48 - 5 14 25 -0.51 83 0 0 - 3 49 7 20 53 23.0 6 226 -53 - 3 19 24 - 4 18 39 - 3 15 19 - 4 22 41 -0.51 84 0 0 - 2 55 39 20 53 19.1 5 226 -51 - 2 25 36 - 3 25 32 - 2 21 28 - 3 29 37 -0.52 85 0 0 - 2 0 48 20 53 16.2 3 226 -50 - 1 30 23 - 2 31 2 - 1 26 13 - 2 35 10 -0.54 86 0 0 - 1 4 34 20 53 14.3 2 226 -49 - 0 33 47 - 1 35 10 - 0 29 33 - 1 39 20 -0.57 87 0 0 - 0 6 55 20 53 13.3 1 226 -47 0 24 14 - 0 37 53 0 28 31 - 0 42 7 -0.77 Uncertainty in time = +/- 5 secs Prediction of 2023 Jul 15.2 Data for the target star ------------------------ * name: UCAC4 229-122548 * constellation : Scorpius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 16 54 23.5347 DE: -44 14 47.343 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 16 54 23.5347 DE: -44 14 47.343 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 11.8 * B mag [mag]: 13.1 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (735) Marghanna asteroid class: approx. diameter [km]: 74 approx. diameter ["]: 0.069 distance from Earth [AU]: 1.46190 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#59 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): 0.018", 0.004", 118.175° remarks: * orbital elements for (735)Marghanna : Mean anomaly = 317.6265567332 deg Arg. of pericenter = 309.9796888397 deg Long. of node = 42.9183318000 deg Inclination = 16.8668785272 deg Eccentricity = 0.3206071127 Semimajor axis = 2.7303403457 AU Perihelion dist = 1.8549738109 AU Mag: H = 9.84, G = 0.15 Epoch of elements : MJD 60515.88812755 TDT (2024 Jul 24.8881) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#592023Apr24,19.24,2024,7,24,21.315038,0.139801,0.350005,-2.007955,0.802388,0.003836,0.000944,0.000001,0.000000 -8.7661,-44.2888,-138.08,19.61,False UCAC4 229-122548,16.90653744,-44.2464842,13.10,11.81,11.11,0.1,0,,16.93631748,-44.2888081,1.84,2.04,0,0,0 735,Marghanna,13.43,73.724,1.4619,0,0,-1.123,4.83,,4.2,0 0,317.4325,2024,7,24,309.9797,42.9183,16.8669,0.32061,2.73034,1.85497,9.84,5.0,0.15 1.069,0.0183,0.0043,118,0.0048,Known errors,0.86,0,-1,-1 20240724_122548,60140.22 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 05:14 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org