IOTA/IOTA-ES occultation update for (19683) 1999 RK196 / TYC 265-00807-1 event on 2024 Nov 29, 18:26 UT Visible from Summary ------- On 2024 Nov 29 UT, the 8.26208867726785 km diameter asteroid (19683) 1999 RK196 will occult a 9.7 mag star in the constellation Leo for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 9.20 mag to 18.92 mag (the magnitude of the asteroid) for at most 0.370 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: 78 * date and approx. time of event: 2024 Nov 29, 18:22 - 2024 Nov 29, 18:31 * geocentric midpoint of event [JD]: 2460644.26868971 * magnitude of target star: 9.72 * magnitude drop [mag]: 9.20 * estimated maximum duration [s]: 0.370 * Moon: 2 % sunlit, 63° distance * Sun: 81° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 9 * 1 sigma uncertainty interval [path widths]: +/- 0.70 * 1 sigma uncertainty interval [seconds]: +/- 1.5 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.015, +/- 0.009) * 1 sigma uncertainty ellipse (major, minor, PA): (0.018", 0.003", 119°) * approx speed of asteroid's shadow [km/s]: 22.8283 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 265-00807-1 by 19683 1999 RK196 on 2024 Nov 29 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 92 0 0 19 38 50 18 22 20.9 1 87 -80 19 36 29 19 41 10 19 33 11 19 44 28 .... 93 0 0 19 41 9 18 22 21.1 2 88 -79 19 38 49 19 43 29 19 35 30 19 46 47 0.14 94 0 0 19 42 56 18 22 21.2 3 88 -78 19 40 36 19 45 17 19 37 18 19 48 35 0.16 95 0 0 19 44 13 18 22 21.5 4 88 -77 19 41 53 19 46 33 19 38 35 19 49 51 0.17 96 0 0 19 44 59 18 22 21.9 5 89 -76 19 42 38 19 47 19 19 39 20 19 50 37 0.18 97 0 0 19 45 13 18 22 22.3 6 89 -75 19 42 53 19 47 33 19 39 34 19 50 51 0.18 98 0 0 19 44 55 18 22 22.8 7 89 -74 19 42 35 19 47 16 19 39 17 19 50 34 0.19 99 0 0 19 44 7 18 22 23.4 8 90 -73 19 41 47 19 46 27 19 38 29 19 49 45 0.19 100 0 0 19 42 47 18 22 24.0 8 90 -73 19 40 27 19 45 7 19 37 9 19 48 25 0.19 101 0 0 19 40 56 18 22 24.7 9 90 -72 19 38 36 19 43 16 19 35 17 19 46 34 0.19 102 0 0 19 38 33 18 22 25.5 10 91 -71 19 36 13 19 40 54 19 32 55 19 44 12 0.19 103 0 0 19 35 39 18 22 26.4 11 91 -70 19 33 19 19 37 59 19 30 0 19 41 18 0.19 104 0 0 19 32 14 18 22 27.4 12 91 -69 19 29 53 19 34 34 19 26 35 19 37 52 0.19 105 0 0 19 28 16 18 22 28.4 13 92 -68 19 25 56 19 30 37 19 22 37 19 33 55 0.20 106 0 0 19 23 47 18 22 29.5 14 92 -67 19 21 27 19 26 8 19 18 8 19 29 27 0.20 107 0 0 19 18 47 18 22 30.7 15 92 -66 19 16 26 19 21 7 19 13 7 19 24 26 0.20 108 0 0 19 13 14 18 22 32.0 16 92 -65 19 10 54 19 15 35 19 7 34 19 18 54 0.20 109 0 0 19 7 10 18 22 33.4 17 93 -64 19 4 49 19 9 31 19 1 30 19 12 51 0.20 110 0 0 19 0 34 18 22 34.8 18 93 -63 18 58 13 19 2 55 18 54 53 19 6 15 0.20 111 0 0 18 53 26 18 22 36.3 19 93 -62 18 51 5 18 55 48 18 47 45 18 59 7 0.20 112 0 0 18 45 46 18 22 37.9 20 94 -61 18 43 25 18 48 8 18 40 5 18 51 28 0.20 113 0 0 18 37 34 18 22 39.5 21 94 -60 18 35 12 18 39 56 18 31 52 18 43 16 0.20 114 0 0 18 28 50 18 22 41.3 22 94 -59 18 26 28 18 31 12 18 23 7 18 34 32 0.20 115 0 0 18 19 33 18 22 43.1 23 95 -58 18 17 11 18 21 55 18 13 50 18 25 16 0.20 116 0 0 18 9 44 18 22 45.0 24 95 -57 18 7 22 18 12 7 18 4 1 18 15 28 0.20 117 0 0 17 59 23 18 22 47.0 25 95 -56 17 57 1 18 1 46 17 53 39 18 5 7 0.20 118 0 0 17 48 29 18 22 49.1 26 95 -55 17 46 7 17 50 52 17 42 45 17 54 14 0.20 119 0 0 17 37 3 18 22 51.2 27 96 -54 17 34 40 17 39 26 17 31 18 17 42 48 0.20 120 0 0 17 25 4 18 22 53.4 28 96 -53 17 22 41 17 27 28 17 19 18 17 30 50 0.20 121 0 0 17 12 33 18 22 55.7 29 96 -52 17 10 9 17 14 56 17 6 46 17 18 19 0.20 122 0 0 16 59 28 18 22 58.1 30 96 -51 16 57 4 17 1 52 16 53 41 17 5 16 0.20 123 0 0 16 45 51 18 23 0.6 31 97 -50 16 43 27 16 48 15 16 40 3 16 51 39 0.20 124 0 0 16 31 41 18 23 3.2 32 97 -49 16 29 17 16 34 6 16 25 52 16 37 30 0.20 125 0 0 16 16 58 18 23 5.8 33 97 -48 16 14 33 16 19 23 16 11 8 16 22 48 0.20 126 0 0 16 1 42 18 23 8.5 34 97 -47 15 59 17 16 4 7 15 55 52 16 7 33 0.20 127 0 0 15 45 53 18 23 11.3 35 97 -46 15 43 28 15 48 19 15 40 2 15 51 45 0.20 128 0 0 15 29 31 18 23 14.2 36 98 -45 15 27 5 15 31 57 15 23 39 15 35 23 0.20 129 0 0 15 12 36 18 23 17.2 37 98 -44 15 10 10 15 15 3 15 6 43 15 18 29 0.20 130 0 0 14 55 8 18 23 20.3 38 98 -43 14 52 41 14 57 35 14 49 14 15 1 2 0.20 131 0 0 14 37 7 18 23 23.4 39 98 -42 14 34 40 14 39 34 14 31 12 14 43 2 0.20 132 0 0 14 18 32 18 23 26.6 40 98 -41 14 16 5 14 21 0 14 12 37 14 24 28 0.20 133 0 0 13 59 25 18 23 29.9 41 98 -40 13 56 57 14 1 53 13 53 28 14 5 22 0.20 134 0 0 13 39 44 18 23 33.3 42 98 -39 13 37 16 13 42 13 13 33 47 13 45 42 0.20 135 0 0 13 19 31 18 23 36.8 43 98 -38 13 17 2 13 21 59 13 13 32 13 25 30 0.20 136 0 0 12 58 44 18 23 40.3 44 98 -37 12 56 15 13 1 13 12 52 45 13 4 44 0.20 137 0 0 12 37 25 18 23 44.0 45 98 -36 12 34 55 12 39 54 12 31 24 12 43 26 0.20 138 0 0 12 15 33 18 23 47.7 46 98 -35 12 13 3 12 18 2 12 9 31 12 21 34 0.20 139 0 0 11 53 8 18 23 51.5 47 98 -34 11 50 37 11 55 38 11 47 5 11 59 10 0.20 140 0 0 11 30 10 18 23 55.4 48 98 -33 11 27 39 11 32 41 11 24 6 11 36 14 0.20 141 0 0 11 6 40 18 23 59.4 49 98 -32 11 4 9 11 9 11 11 0 35 11 12 45 0.20 142 0 0 10 42 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46 -24 40 58 -24 27 58 0.19 -154 0 0 -25 5 55 18 29 35.4 53 314 41 -25 8 36 -25 3 14 -25 12 24 -24 59 26 0.19 -153 0 0 -25 36 57 18 29 39.6 52 314 42 -25 39 38 -25 34 16 -25 43 25 -25 30 29 0.19 -152 0 0 -26 7 33 18 29 43.6 50 313 43 -26 10 14 -26 4 53 -26 14 1 -26 1 6 0.19 -151 0 0 -26 37 43 18 29 47.6 49 312 44 -26 40 23 -26 35 3 -26 44 9 -26 31 17 0.19 -150 0 0 -27 7 26 18 29 51.4 48 311 45 -27 10 5 -27 4 46 -27 13 51 -27 1 0 0.19 -149 0 0 -27 36 41 18 29 55.2 47 311 46 -27 39 20 -27 34 2 -27 43 5 -27 30 17 0.19 -148 0 0 -28 5 29 18 29 58.9 46 310 47 -28 8 8 -28 2 50 -28 11 52 -27 59 6 0.19 -147 0 0 -28 33 49 18 30 2.5 45 309 47 -28 36 27 -28 31 10 -28 40 11 -28 27 26 0.19 -146 0 0 -29 1 40 18 30 6.0 45 309 48 -29 4 18 -28 59 2 -29 8 1 -28 55 19 0.19 -145 0 0 -29 29 3 18 30 9.5 44 308 49 -29 31 40 -29 26 25 -29 35 23 -29 22 43 0.19 -144 0 0 -29 55 57 18 30 12.8 43 307 50 -29 58 34 -29 53 20 -30 2 16 -29 49 38 0.19 -143 0 0 -30 22 21 18 30 16.1 42 307 51 -30 24 58 -30 19 45 -30 28 39 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-38 22 43 0.19 -118 0 0 -38 42 49 18 31 12.1 19 290 67 -38 45 15 -38 40 23 -38 48 41 -38 36 57 0.19 -117 0 0 -38 56 34 18 31 13.4 19 290 68 -38 58 59 -38 54 9 -39 2 25 -38 50 43 0.20 -116 0 0 -39 9 51 18 31 14.7 18 289 68 -39 12 16 -39 7 26 -39 15 42 -39 4 1 0.20 -115 0 0 -39 22 41 18 31 15.9 17 289 68 -39 25 6 -39 20 16 -39 28 31 -39 16 52 0.20 -114 0 0 -39 35 4 18 31 17.0 16 288 69 -39 37 28 -39 32 39 -39 40 52 -39 29 15 0.20 -113 0 0 -39 46 59 18 31 18.1 15 287 69 -39 49 23 -39 44 35 -39 52 47 -39 41 11 0.20 -112 0 0 -39 58 27 18 31 19.1 15 287 69 -40 0 51 -39 56 3 -40 4 14 -39 52 40 0.20 -111 0 0 -40 9 28 18 31 20.1 14 286 69 -40 11 52 -40 7 5 -40 15 14 -40 3 42 0.20 -110 0 0 -40 20 2 18 31 21.0 13 285 70 -40 22 26 -40 17 39 -40 25 48 -40 14 17 0.20 -109 0 0 -40 30 10 18 31 21.9 12 285 70 -40 32 33 -40 27 47 -40 35 55 -40 24 25 0.20 -108 0 0 -40 39 52 18 31 22.7 11 284 70 -40 42 14 -40 37 29 -40 45 36 -40 34 7 0.20 -107 0 0 -40 49 7 18 31 23.4 11 283 70 -40 51 29 -40 46 44 -40 54 51 -40 43 23 0.20 -106 0 0 -40 57 56 18 31 24.1 10 283 70 -41 0 18 -40 55 34 -41 3 39 -40 52 13 0.20 -105 0 0 -41 6 19 18 31 24.7 9 282 70 -41 8 41 -41 3 57 -41 12 2 -41 0 36 0.20 -104 0 0 -41 14 16 18 31 25.3 8 281 70 -41 16 38 -41 11 54 -41 19 58 -41 8 34 0.20 -103 0 0 -41 21 47 18 31 25.8 8 281 70 -41 24 9 -41 19 26 -41 27 29 -41 16 6 0.20 -102 0 0 -41 28 53 18 31 26.3 7 280 70 -41 31 14 -41 26 32 -41 34 34 -41 23 12 0.20 -101 0 0 -41 35 33 18 31 26.7 6 279 70 -41 37 54 -41 33 12 -41 41 14 -41 29 53 0.20 -100 0 0 -41 41 48 18 31 27.1 5 279 70 -41 44 9 -41 39 27 -41 47 29 -41 36 8 0.20 - 99 0 0 -41 47 38 18 31 27.4 5 278 70 -41 49 59 -41 45 17 -41 53 18 -41 41 58 0.21 - 98 0 0 -41 53 2 18 31 27.7 4 277 70 -41 55 23 -41 50 42 -41 58 42 -41 47 23 0.21 - 97 0 0 -41 58 2 18 31 27.9 3 277 69 -42 0 22 -41 55 41 -42 3 41 -41 52 23 0.21 - 96 0 0 -42 2 36 18 31 28.1 2 276 69 -42 4 57 -42 0 16 -42 8 15 -41 56 57 0.22 - 95 0 0 -42 6 46 18 31 28.2 2 275 69 -42 9 6 -42 4 26 -42 12 24 -42 1 7 0.23 - 94 0 0 -42 10 31 18 31 28.3 1 275 69 -42 12 51 -42 8 10 -42 16 9 -42 4 52 0.25 - 93 0 0 -42 13 51 18 31 28.3 0 274 68 -42 16 11 -42 11 31 -42 19 29 -42 8 13 0.66 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: TYC 265-00807-1 * constellation : Leo * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 11 05 52.1171 DE: +03 03 14.435 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 11 05 52.1172 DE: +03 03 14.434 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 9.7 * B mag [mag]: 10.2 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (19683) 1999 RK196 asteroid class: approx. diameter [km]: 8 approx. diameter ["]: 0.004 distance from Earth [AU]: 2.60470 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#41 date of fit: 2023 Apr 27 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", 0.003", 119.32° remarks: * orbital elements for (19683)1999 RK196 : Mean anomaly = 291.4749214165 deg Arg. of pericenter = 294.7868191146 deg Long. of node = 304.7667335506 deg Inclination = 7.2756042876 deg Eccentricity = 0.2280953164 Semimajor axis = 2.7353602598 AU Perihelion dist = 2.1114373958 AU Mag: H = 13.68, G = 0.15 Epoch of elements : MJD 60643.76868979 TDT (2024 Nov 29.7687) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#412023Apr27,0.37,2024,11,29,18.448553,-0.100238,-0.168217,11.067153,-6.598414,-0.005390,0.002226,0.000000,0.000000 -179.0717,2.9204,-99.59,-21.65,False TYC 265-00807-1,11.09781028,3.0540098,10.21,9.72,9.46,0.1,0,,11.11912787,2.9204199,9.20,9.02,0,0,0 19683,1999 RK196,18.92,8.451,2.6047,0,0,2.495,-22.28,,0.6,0 0,291.3075,2024,11,29,294.7868,304.7667,7.2756,0.22810,2.73536,2.11144,13.68,5.0,0.15 1.707,0.0177,0.0031,119,0.0031,Known errors,0.99,0,-1,-1 20241129_0807-1,60140.72 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 17:17 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org