IOTA/IOTA-ES occultation update for (1792) Reni / TYC 5563-00731-1 event on 2024 Dec 17, 19:50 UT Visible from Summary ------- On 2024 Dec 17 UT, the 25.1980586962861 km diameter asteroid (1792) Reni will occult a 10.2 mag star in the constellation Libra for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 8.35 mag to 18.52 mag (the magnitude of the asteroid) for at most 0.770 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 17, 19:47 - 2024 Dec 17, 19:53 * geocentric midpoint of event [JD]: 2460662.32667966 * magnitude of target star: 10.17 * magnitude drop [mag]: 8.35 * estimated maximum duration [s]: 0.770 * Moon: 92 % sunlit, 99° distance * Sun: 48° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 31 * 1 sigma uncertainty interval [path widths]: +/- 0.15 * 1 sigma uncertainty interval [seconds]: +/- 0.4 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.004, +/- 0.002) * 1 sigma uncertainty ellipse (major, minor, PA): (0.005", 0.001", 115°) * approx speed of asteroid's shadow [km/s]: 33.1371 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 5563-00731-1 by 1792 Reni on 2024 Dec 17 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 -17 33 47 19 47 47.6 1 99 -34 -17 42 23 -17 25 12 -17 45 0 -17 22 36 .... 103 0 0 -17 43 52 19 47 47.7 2 99 -33 -17 52 28 -17 35 16 -17 55 5 -17 32 40 0.54 104 0 0 -17 54 19 19 47 47.9 3 99 -32 -18 2 56 -17 45 43 -18 5 34 -17 43 6 0.60 105 0 0 -18 5 10 19 47 48.1 4 98 -31 -18 13 48 -17 56 33 -18 16 25 -17 53 56 0.63 106 0 0 -18 16 23 19 47 48.4 5 98 -30 -18 25 2 -18 7 45 -18 27 39 -18 5 8 0.65 107 0 0 -18 27 59 19 47 48.7 6 98 -30 -18 36 38 -18 19 21 -18 39 16 -18 16 43 0.66 108 0 0 -18 39 57 19 47 49.1 6 97 -29 -18 48 37 -18 31 18 -18 51 15 -18 28 41 0.67 109 0 0 -18 52 17 19 47 49.6 7 97 -28 -19 0 58 -18 43 38 -19 3 36 -18 41 0 0.67 110 0 0 -19 4 59 19 47 50.2 8 97 -27 -19 13 41 -18 56 19 -19 16 19 -18 53 41 0.68 111 0 0 -19 18 3 19 47 50.8 9 96 -26 -19 26 46 -19 9 22 -19 29 24 -19 6 44 0.68 112 0 0 -19 31 29 19 47 51.5 10 96 -25 -19 40 12 -19 22 47 -19 42 51 -19 20 8 0.68 113 0 0 -19 45 15 19 47 52.2 11 96 -24 -19 53 59 -19 36 32 -19 56 38 -19 33 54 0.68 114 0 0 -19 59 22 19 47 53.0 12 95 -23 -20 8 7 -19 50 39 -20 10 47 -19 48 0 0.69 115 0 0 -20 13 50 19 47 53.9 13 95 -23 -20 22 36 -20 5 6 -20 25 16 -20 2 27 0.69 116 0 0 -20 28 39 19 47 54.9 14 95 -22 -20 37 25 -20 19 54 -20 40 5 -20 17 14 0.69 117 0 0 -20 43 47 19 47 55.9 15 94 -21 -20 52 34 -20 35 1 -20 55 15 -20 32 22 0.69 118 0 0 -20 59 16 19 47 57.0 16 94 -20 -21 8 4 -20 50 29 -21 10 44 -20 47 49 0.69 119 0 0 -21 15 3 19 47 58.1 17 93 -19 -21 23 52 -21 6 16 -21 26 33 -21 3 35 0.69 120 0 0 -21 31 10 19 47 59.3 18 93 -18 -21 40 0 -21 22 21 -21 42 41 -21 19 41 0.69 121 0 0 -21 47 36 19 48 0.6 19 92 -17 -21 56 26 -21 38 46 -21 59 8 -21 36 6 0.70 122 0 0 -22 4 20 19 48 1.9 20 92 -16 -22 13 11 -21 55 29 -22 15 53 -21 52 48 0.70 123 0 0 -22 21 22 19 48 3.3 21 91 -15 -22 30 14 -22 12 31 -22 32 56 -22 9 49 0.70 124 0 0 -22 38 42 19 48 4.8 22 91 -14 -22 47 35 -22 29 50 -22 50 17 -22 27 8 0.70 125 0 0 -22 56 19 19 48 6.3 23 90 -13 -23 5 13 -22 47 26 -23 7 55 -22 44 44 0.70 126 0 0 -23 14 13 19 48 7.8 24 90 -12 -23 23 8 -23 5 19 -23 25 50 -23 2 37 0.70 127 0 0 -23 32 23 19 48 9.5 25 89 -12 -23 41 19 -23 23 28 -23 44 2 -23 20 46 0.70 128 0 0 -23 50 50 19 48 11.2 25 89 -11 -23 59 46 -23 41 54 -24 2 30 -23 39 12 0.70 129 0 0 -24 9 32 19 48 12.9 26 88 -10 -24 18 29 -24 0 35 -24 21 13 -23 57 52 0.70 130 0 0 -24 28 29 19 48 14.7 27 88 -9 -24 37 28 -24 19 32 -24 40 11 -24 16 49 0.70 131 0 0 -24 47 41 19 48 16.6 28 87 -8 -24 56 40 -24 38 43 -24 59 24 -24 35 59 0.70 132 0 0 -25 7 7 19 48 18.5 29 87 -7 -25 16 7 -24 58 8 -25 18 52 -24 55 24 0.70 133 0 0 -25 26 47 19 48 20.5 30 86 -6 -25 35 48 -25 17 47 -25 38 33 -25 15 3 0.70 134 0 0 -25 46 40 19 48 22.5 31 85 -5 -25 55 42 -25 37 39 -25 58 27 -25 34 55 0.70 135 0 0 -26 6 46 19 48 24.5 32 85 -4 -26 15 49 -25 57 44 -26 18 34 -25 55 0 0.70 136 0 0 -26 27 4 19 48 26.6 33 84 -3 -26 36 8 -26 18 1 -26 38 53 -26 15 17 0.70 137 0 0 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35 38 -54 55 5 -54 33 4 0.71 -113 0 0 -54 46 34 19 52 34.4 28 295 58 -54 55 1 -54 38 8 -54 57 35 -54 35 34 0.71 -112 0 0 -54 48 49 19 52 35.5 27 295 58 -54 57 15 -54 40 23 -54 59 49 -54 37 49 0.71 -111 0 0 -54 50 48 19 52 36.6 26 294 58 -54 59 15 -54 42 23 -55 1 49 -54 39 49 0.71 -110 0 0 -54 52 33 19 52 37.6 26 293 58 -55 0 59 -54 44 7 -55 3 33 -54 41 34 0.71 -109 0 0 -54 54 2 19 52 38.7 25 292 58 -55 2 28 -54 45 37 -55 5 2 -54 43 4 0.71 -108 0 0 -54 55 17 19 52 39.7 25 291 57 -55 3 42 -54 46 51 -55 6 16 -54 44 18 0.71 -107 0 0 -54 56 16 19 52 40.7 24 290 57 -55 4 42 -54 47 51 -55 7 16 -54 45 18 0.71 -106 0 0 -54 57 0 19 52 41.6 24 289 57 -55 5 26 -54 48 35 -55 8 0 -54 46 2 0.71 -105 0 0 -54 57 29 19 52 42.6 23 288 57 -55 5 55 -54 49 5 -55 8 29 -54 46 31 0.71 -104 0 0 -54 57 44 19 52 43.5 23 287 56 -55 6 9 -54 49 19 -55 8 43 -54 46 46 0.71 -103 0 0 -54 57 43 19 52 44.4 22 286 56 -55 6 9 -54 49 18 -55 8 42 -54 46 45 0.71 -102 0 0 -54 57 27 19 52 45.3 22 286 56 -55 5 53 -54 49 2 -55 8 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49 -54 23 45 0.72 - 89 0 0 -54 31 15 19 52 54.9 14 274 52 -54 39 44 -54 22 47 -54 42 18 -54 20 13 0.72 - 88 0 0 -54 27 28 19 52 55.4 14 274 51 -54 35 57 -54 19 0 -54 38 32 -54 16 26 0.72 - 87 0 0 -54 23 26 19 52 56.0 13 273 51 -54 31 56 -54 14 58 -54 34 31 -54 12 23 0.72 - 86 0 0 -54 19 9 19 52 56.5 12 272 50 -54 27 39 -54 10 40 -54 30 14 -54 8 6 0.73 - 85 0 0 -54 14 37 19 52 57.1 12 271 50 -54 23 7 -54 6 7 -54 25 43 -54 3 33 0.73 - 84 0 0 -54 9 49 19 52 57.5 11 270 50 -54 18 20 -54 1 19 -54 20 56 -53 58 44 0.73 - 83 0 0 -54 4 46 19 52 58.0 11 269 49 -54 13 18 -53 56 15 -54 15 53 -53 53 40 0.73 - 82 0 0 -53 59 28 19 52 58.5 10 269 49 -54 8 0 -53 50 56 -54 10 36 -53 48 21 0.73 - 81 0 0 -53 53 54 19 52 58.9 10 268 48 -54 2 27 -53 45 22 -54 5 2 -53 42 47 0.73 - 80 0 0 -53 48 5 19 52 59.3 9 267 48 -53 56 38 -53 39 32 -53 59 14 -53 36 57 0.74 - 79 0 0 -53 42 0 19 52 59.7 8 266 47 -53 50 34 -53 33 27 -53 53 10 -53 30 51 0.74 - 78 0 0 -53 35 39 19 53 0.0 8 265 47 -53 44 14 -53 27 6 -53 46 50 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Uncertainty in time = +/- 0 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: TYC 5563-00731-1 * constellation : Libra * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 14 30 48.0355 DE: -08 55 21.272 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 14 30 48.0357 DE: -08 55 21.273 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 10.2 * B mag [mag]: 10.7 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (1792) Reni asteroid class: approx. diameter [km]: 25 approx. diameter ["]: 0.008 distance from Earth [AU]: 4.10800 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#51 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): 0.005", 0.001", 115.252° remarks: * orbital elements for (1792)Reni : Mean anomaly = 161.6110190527 deg Arg. of pericenter = 324.0701124673 deg Long. of node = 72.6696971640 deg Inclination = 9.0091446502 deg Eccentricity = 0.2783306858 Semimajor axis = 2.7780252177 AU Perihelion dist = 2.0048155538 AU Mag: H = 11.99, G = 0.15 Epoch of elements : MJD 60661.82667979 TDT (2024 Dec 17.8267) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#512023Apr24,0.77,2024,12,17,19.840312,-0.172655,-0.547845,17.837351,-5.625738,-0.004123,0.001786,-0.000001,0.000000 -166.5050,-9.0329,-118.48,-23.39,False TYC 5563-00731-1,14.51334317,-8.9225754,10.67,10.17,9.90,0.1,0,,14.53527715,-9.0328582,8.35,8.17,0,0,0 1792,Reni,18.52,25.496,4.1080,0,0,2.579,-12.05,,3.6,0 0,161.4350,2024,12,17,324.0701,72.6697,9.0091,0.27833,2.77803,2.00482,11.99,5.0,0.15 1.152,0.0047,0.0011,115,0.0013,Known errors,1.33,0,-1,-1 20241217_0731-1,60140.74 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 17:51 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org