IOTA/IOTA-ES occultation update for (485) Genua / TYC 0103-00761-1 event on 2023 Nov 24, 17:00 UT Visible from Australia Summary ------- On 2023 Nov 24 UT, the 59.7 km diameter asteroid (485) Genua will occult a 10.9 mag star in the constellation Orion for observers along a path across Australia. In the case of an occultation, the combined light of the asteroid and the star will drop by 1.06 mag to 11.42 mag (the magnitude of the asteroid) for at most 6.340 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: 2023 Nov 24, 16:52 - 2023 Nov 24, 17:09 * geocentric midpoint of event [JD]: 2460273.20880917 * magnitude of target star: 10.87 * magnitude drop [mag]: 1.06 * estimated maximum duration [s]: 6.340 * Moon: 92 % sunlit, 51° distance * Sun: 155° distance * rough path description: Australia The occultation path -------------------- * approximate projected width [km]: 82 * 1 sigma uncertainty interval [path widths]: +/- 0.17 * 1 sigma uncertainty interval [seconds]: +/- 1.4 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.017, +/- 0.002) * 1 sigma uncertainty ellipse (major, minor, PA): (0.017", 0.002", 91°) * approx speed of asteroid's shadow [km/s]: 9.4135 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 0103-00761-1 by 485 Genua on 2023 Nov 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 0 0 0 .. .. .... .. .. .. .. .. .. -77 52 7 .. .. .. -77 44 34 .. .. .. .... 41 59 59 -78 11 36 17 8 53.7 0 75 14 -77 48 49 -78 34 32 -77 41 14 -78 42 14 .... 42 59 59 -78 8 11 17 8 53.7 0 74 14 -77 45 18 -78 31 12 -77 37 42 -78 38 56 0.51 43 59 59 -78 4 34 17 8 53.6 1 73 13 -77 41 36 -78 27 41 -77 33 57 -78 35 26 0.65 44 59 59 -78 0 45 17 8 53.6 1 72 13 -77 37 41 -78 23 58 -77 30 0 -78 31 45 0.73 45 59 59 -77 56 43 17 8 53.5 1 71 13 -77 33 33 -78 20 2 -77 25 51 -78 27 52 0.77 46 59 59 -77 52 29 17 8 53.5 1 70 13 -77 29 13 -78 15 55 -77 21 28 -78 23 47 0.79 47 59 59 -77 48 2 17 8 53.4 1 69 13 -77 24 39 -78 11 35 -77 16 53 -78 19 29 0.81 48 59 59 -77 43 22 17 8 53.3 2 68 12 -77 19 52 -78 7 2 -77 12 3 -78 14 59 0.83 49 59 59 -77 38 29 17 8 53.2 2 67 12 -77 14 52 -78 2 16 -77 7 0 -78 10 15 0.84 50 59 59 -77 33 22 17 8 53.0 2 66 12 -77 9 37 -77 57 16 -77 1 43 -78 5 18 0.85 51 59 59 -77 28 0 17 8 52.9 2 65 12 -77 4 8 -77 52 3 -76 56 11 -78 0 8 0.86 52 59 59 -77 22 25 17 8 52.7 3 64 12 -76 58 24 -77 46 36 -76 50 24 -77 54 43 0.86 53 59 59 -77 16 34 17 8 52.5 3 63 11 -76 52 25 -77 40 54 -76 44 23 -77 49 4 0.87 54 59 59 -77 10 29 17 8 52.3 3 62 11 -76 46 10 -77 34 57 -76 38 5 -77 43 10 0.87 55 59 59 -77 4 7 17 8 52.1 3 61 11 -76 39 40 -77 28 45 -76 31 32 -77 37 2 0.88 56 59 59 -76 57 30 17 8 51.8 4 60 11 -76 32 53 -77 22 18 -76 24 42 -77 30 37 0.88 57 59 59 -76 50 36 17 8 51.6 4 59 10 -76 25 50 -77 15 34 -76 17 36 -77 23 57 0.88 58 59 59 -76 43 26 17 8 51.3 4 58 10 -76 18 29 -77 8 33 -76 10 12 -77 17 0 0.89 59 59 59 -76 35 58 17 8 51.0 4 57 10 -76 10 51 -77 1 16 -76 2 30 -77 9 46 0.89 60 59 59 -76 28 12 17 8 50.6 5 56 10 -76 2 55 -76 53 41 -75 54 30 -77 2 15 0.89 61 59 59 -76 20 8 17 8 50.2 5 55 9 -75 54 40 -76 45 48 -75 46 11 -76 54 26 0.90 62 59 59 -76 11 45 17 8 49.8 5 54 9 -75 46 5 -76 37 36 -75 37 33 -76 46 18 0.90 63 59 59 -76 3 2 17 8 49.4 6 53 9 -75 37 11 -76 29 5 -75 28 35 -76 37 51 0.90 64 59 59 -75 53 59 17 8 49.0 6 52 9 -75 27 56 -76 20 15 -75 19 16 -76 29 4 0.90 65 59 59 -75 44 35 17 8 48.5 6 51 8 -75 18 20 -76 11 4 -75 9 37 -76 19 58 0.90 66 59 59 -75 34 50 17 8 48.0 6 50 8 -75 8 23 -76 1 31 -74 59 35 -76 10 30 0.91 67 59 59 -75 24 43 17 8 47.4 7 49 8 -74 58 3 -75 51 38 -74 49 11 -76 0 40 0.91 68 59 59 -75 14 13 17 8 46.8 7 49 8 -74 47 20 -75 41 21 -74 38 24 -75 50 28 0.91 69 59 59 -75 3 20 17 8 46.2 7 48 7 -74 36 13 -75 30 42 -74 27 12 -75 39 54 0.91 70 59 59 -74 52 2 17 8 45.5 8 47 7 -74 24 42 -75 19 38 -74 15 37 -75 28 55 0.91 71 59 59 -74 40 20 17 8 44.8 8 46 7 -74 12 45 -75 8 10 -74 3 35 -75 17 31 0.91 72 59 59 -74 28 11 17 8 44.0 8 45 6 -74 0 22 -74 56 16 -73 51 8 -75 5 43 0.91 73 59 59 -74 15 36 17 8 43.2 9 44 6 -73 47 33 -74 43 56 -73 38 13 -74 53 27 0.91 74 59 59 -74 2 33 17 8 42.4 9 43 6 -73 34 15 -74 31 8 -73 24 51 -74 40 45 0.92 75 59 59 -73 49 2 17 8 41.5 9 42 6 -73 20 29 -74 17 52 -73 11 0 -74 27 35 0.92 76 59 59 -73 35 2 17 8 40.5 10 41 5 -73 6 13 -74 4 8 -72 56 39 -74 13 55 0.92 77 59 59 -73 20 31 17 8 39.5 10 40 5 -72 51 27 -73 49 53 -72 41 48 -73 59 46 0.92 78 59 59 -73 5 29 17 8 38.4 10 39 5 -72 36 9 -73 35 7 -72 26 25 -73 45 6 0.92 79 59 59 -72 49 55 17 8 37.2 11 38 4 -72 20 19 -73 19 49 -72 10 30 -73 29 54 0.92 80 59 59 -72 33 47 17 8 36.0 11 37 4 -72 3 56 -73 3 58 -71 54 1 -73 14 8 0.92 81 59 59 -72 17 5 17 8 34.6 12 36 4 -71 46 58 -72 47 33 -71 36 58 -72 57 49 0.92 82 59 59 -71 59 48 17 8 33.3 12 35 3 -71 29 25 -72 30 33 -71 19 19 -72 40 55 0.92 83 59 59 -71 41 55 17 8 31.8 12 34 3 -71 11 15 -72 12 57 -71 1 4 -72 23 24 0.93 84 59 59 -71 23 24 17 8 30.2 13 33 2 -70 52 27 -71 54 43 -70 42 12 -72 5 16 0.93 85 59 59 -71 4 15 17 8 28.6 13 32 2 -70 33 2 -71 35 50 -70 22 41 -71 46 29 0.93 86 59 59 -70 44 26 17 8 26.8 14 31 2 -70 12 56 -71 16 18 -70 2 30 -71 27 3 0.93 87 59 59 -70 23 56 17 8 24.9 14 30 1 -69 52 10 -70 56 6 -69 41 38 -71 6 56 0.93 88 59 59 -70 2 44 17 8 23.0 15 29 1 -69 30 42 -70 35 11 -69 20 5 -70 46 7 0.93 89 59 59 -69 40 50 17 8 20.9 15 28 0 -69 8 32 -70 13 33 -68 57 49 -70 24 35 0.93 90 59 59 -69 18 11 17 8 18.7 16 27 0 -68 45 37 -69 51 11 -68 34 50 -70 2 19 0.93 91 59 59 -68 54 48 17 8 16.3 16 26 0 -68 21 59 -69 28 4 -68 11 6 -69 39 18 0.93 92 59 59 -68 30 39 17 8 13.9 17 25 -1 -67 57 34 -69 4 11 -67 46 36 -69 15 30 0.93 94 0 0 -68 5 43 17 8 11.2 17 24 -1 -67 32 23 -68 39 31 -67 21 20 -68 50 55 0.93 95 0 0 -67 39 59 17 8 8.5 18 23 -2 -67 6 24 -68 14 2 -66 55 17 -68 25 32 0.93 96 0 0 -67 13 26 17 8 5.5 18 22 -2 -66 39 37 -67 47 45 -66 28 25 -67 59 19 0.93 97 0 0 -66 46 4 17 8 2.5 19 21 -3 -66 12 2 -67 20 37 -66 0 45 -67 32 17 0.94 98 0 0 -66 17 52 17 7 59.2 19 20 -3 -65 43 36 -66 52 39 -65 32 15 -67 4 23 0.94 99 0 0 -65 48 49 17 7 55.7 20 19 -4 -65 14 20 -66 23 49 -65 2 56 -66 35 38 0.94 100 0 0 -65 18 54 17 7 52.1 21 19 -4 -64 44 14 -65 54 7 -64 32 45 -66 6 0 0.94 101 0 0 -64 48 8 17 7 48.3 21 18 -5 -64 13 16 -65 23 32 -64 1 44 -65 35 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19 47 -46 59 15 -48 31 34 0.95 127 0 0 -46 56 51 17 4 40.5 40 348 -18 -46 22 44 -47 31 28 -46 11 26 -47 43 10 0.95 128 0 0 -46 8 32 17 4 29.7 40 347 -19 -45 34 39 -46 42 56 -45 23 25 -46 54 33 0.95 129 0 0 -45 20 4 17 4 18.7 41 346 -19 -44 46 24 -45 54 14 -44 35 16 -46 5 46 0.95 130 0 0 -44 31 29 17 4 7.5 41 344 -20 -43 58 3 -45 5 24 -43 46 59 -45 16 51 0.95 131 0 0 -43 42 49 17 3 56.0 42 343 -20 -43 9 38 -44 16 29 -42 58 38 -44 27 51 0.94 132 0 0 -42 54 7 17 3 44.4 43 341 -20 -42 21 11 -43 27 32 -42 10 16 -43 38 48 0.94 133 0 0 -42 5 26 17 3 32.6 43 340 -21 -41 32 44 -42 38 35 -41 21 54 -42 49 46 0.94 134 0 0 -41 16 47 17 3 20.6 44 338 -21 -40 44 21 -41 49 40 -40 33 36 -42 0 46 0.94 135 0 0 -40 28 14 17 3 8.5 44 337 -21 -39 56 3 -41 0 51 -39 45 23 -41 11 51 0.94 136 0 0 -39 39 48 17 2 56.2 45 335 -22 -39 7 52 -40 12 9 -38 57 18 -40 23 3 0.94 137 0 0 -38 51 32 17 2 43.8 45 333 -22 -38 19 52 -39 23 36 -38 9 22 -39 34 25 0.94 138 0 0 -38 3 28 17 2 31.3 45 332 -22 -37 32 3 -38 35 16 -37 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39 0.93 175 0 0 -14 26 28 16 55 13.2 33 283 -11 -14 2 34 -14 50 31 -13 54 37 -14 58 36 0.93 176 0 0 -14 1 21 16 55 4.2 32 283 -10 -13 37 35 -14 25 17 -13 29 41 -14 33 20 0.93 177 0 0 -13 37 2 16 54 55.5 32 282 -10 -13 13 22 -14 0 51 -13 5 30 -14 8 50 0.93 178 0 0 -13 13 29 16 54 46.9 31 282 -9 -12 49 56 -13 37 11 -12 42 6 -13 45 8 0.93 179 0 0 -12 50 43 16 54 38.7 30 281 -8 -12 27 17 -13 14 18 -12 19 29 -13 22 14 0.93 180 0 0 -12 28 44 16 54 30.6 29 280 -8 -12 5 24 -12 52 13 -11 57 39 -13 0 6 0.93 -179 0 0 -12 7 32 16 54 22.8 28 280 -7 -11 44 18 -12 30 55 -11 36 35 -12 38 46 0.93 -178 0 0 -11 47 8 16 54 15.2 27 280 -6 -11 24 0 -12 10 25 -11 16 18 -12 18 14 0.93 -177 0 0 -11 27 30 16 54 7.9 26 279 -5 -11 4 28 -11 50 42 -10 56 48 -11 58 29 0.93 -176 0 0 -11 8 40 16 54 0.8 26 279 -5 -10 45 43 -11 31 47 -10 38 4 -11 39 32 0.94 -175 0 0 -10 50 38 16 53 53.9 25 278 -4 -10 27 45 -11 13 39 -10 20 8 -11 21 23 0.94 -174 0 0 -10 33 22 16 53 47.3 24 278 -3 -10 10 34 -10 56 19 -10 2 59 -11 4 1 0.94 -173 0 0 -10 16 54 16 53 41.0 23 278 -2 - 9 54 11 -10 39 46 - 9 46 37 -10 47 27 0.94 -172 0 0 -10 1 14 16 53 34.8 22 277 -1 - 9 38 35 -10 24 2 - 9 31 3 -10 31 41 0.94 -171 0 0 - 9 46 21 16 53 29.0 21 277 -1 - 9 23 46 -10 9 5 - 9 16 15 -10 16 43 0.94 -170 0 0 - 9 32 16 16 53 23.4 20 277 0 - 9 9 45 - 9 54 56 - 9 2 15 -10 2 33 0.94 -169 0 0 - 9 18 59 16 53 18.0 19 276 1 - 8 56 31 - 9 41 35 - 8 49 2 - 9 49 10 0.95 -168 0 0 - 9 6 29 16 53 12.9 18 276 2 - 8 44 4 - 9 29 2 - 8 36 36 - 9 36 36 0.95 -167 0 0 - 8 54 47 16 53 8.0 17 276 3 - 8 32 25 - 9 17 17 - 8 24 58 - 9 24 50 0.95 -166 0 0 - 8 43 53 16 53 3.4 16 276 4 - 8 21 34 - 9 6 20 - 8 14 8 - 9 13 52 0.95 -165 0 0 - 8 33 47 16 52 59.1 15 275 4 - 8 11 30 - 8 56 11 - 8 4 5 - 9 3 43 0.95 -164 0 0 - 8 24 28 16 52 55.0 14 275 5 - 8 2 14 - 8 46 51 - 7 54 50 - 8 54 21 0.96 -163 0 0 - 8 15 58 16 52 51.2 13 275 6 - 7 53 46 - 8 38 18 - 7 46 22 - 8 45 48 0.96 -162 0 0 - 8 8 16 16 52 47.6 12 275 7 - 7 46 5 - 8 30 35 - 7 38 42 - 8 38 4 0.96 -161 0 0 - 8 1 22 16 52 44.3 11 275 8 - 7 39 13 - 8 23 39 - 7 31 50 - 8 31 8 0.97 -160 0 0 - 7 55 16 16 52 41.3 11 274 9 - 7 33 9 - 8 17 32 - 7 25 47 - 8 25 1 0.97 -159 0 0 - 7 49 59 16 52 38.5 10 274 10 - 7 27 52 - 8 12 14 - 7 20 31 - 8 19 42 0.98 -158 0 0 - 7 45 31 16 52 36.0 9 274 11 - 7 23 25 - 8 7 45 - 7 16 3 - 8 15 12 0.98 -157 0 0 - 7 41 51 16 52 33.8 8 274 12 - 7 19 45 - 8 4 4 - 7 12 24 - 8 11 32 0.99 -156 0 0 - 7 38 59 16 52 31.8 7 274 12 - 7 16 54 - 8 1 12 - 7 9 33 - 8 8 40 1.00 -155 0 0 - 7 36 57 16 52 30.1 6 274 13 - 7 14 52 - 7 59 10 - 7 7 31 - 8 6 37 1.01 -154 0 0 - 7 35 44 16 52 28.7 5 274 14 - 7 13 38 - 7 57 57 - 7 6 17 - 8 5 24 1.03 -153 0 0 - 7 35 19 16 52 27.5 4 273 15 - 7 13 14 - 7 57 33 - 7 5 52 - 8 5 1 1.06 -152 0 0 - 7 35 45 16 52 26.6 3 273 16 - 7 13 38 - 7 57 59 - 7 6 16 - 8 5 27 1.10 -151 0 0 - 7 37 0 16 52 26.0 2 273 17 - 7 14 52 - 7 59 15 - 7 7 30 - 8 6 43 1.20 -150 0 0 - 7 39 4 16 52 25.7 1 273 18 - 7 16 55 - 8 1 21 - 7 9 33 - 8 8 50 1.56 Uncertainty in time = +/- 2 secs Prediction of 2023 Oct 15.9 Data for the target star ------------------------ * name: TYC 0103-00761-1 * constellation : Orion * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 05 09 10.7395 DE: +02 53 48.729 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 05 09 10.7396 DE: +02 53 48.728 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 10.9 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (485) Genua asteroid class: approx. diameter [km]: 60 approx. diameter ["]: 0.061 distance from Earth [AU]: 1.35830 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#110 date of fit: 2023 Oct 09 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): 0.017", 0.002", 90.881° remarks: * orbital elements for (485)Genua : Mean anomaly = 336.5782263200 deg Arg. of pericenter = 271.8463279599 deg Long. of node = 193.3873172594 deg Inclination = 13.8685316742 deg Eccentricity = 0.1896972767 Semimajor axis = 2.7513023197 AU Perihelion dist = 2.2293877622 AU Mag: H = 8.29, G = 0.15 Epoch of elements : MJD 60272.70875000 TDT (2023 Nov 24.7088) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#1102023Oct09,6.34,2023,11,24,17.011420,0.394656,-0.556227,-4.333265,-3.074586,-0.001577,0.001733,0.000001,0.000000 119.0450,2.9288,-78.50,-20.59,False TYC 0103-00761-1,5.15298320,2.8968692,0.00,10.87,0.00,0.0,0,,5.17406497,2.9287814,1.06,0.00,0,0,0 485,Genua,11.42,59.700,1.3583,0,0,-1.873,-19.90,,3.4,0 0,336.4252,2023,11,24,271.8463,193.3873,13.8685,0.18970,2.75130,2.22939,8.29,5.0,0.15 1.167,0.0170,0.0016,91,0.0171,Known errors,-1.00,0,-1,-1 20231124_0761-1,60232.88 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Oct 15, 21:08 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org