IOTA/IOTA-ES occultation update for (33776) 1999 RB158 / TYC 1426-00662-1 event on 2024 Oct 23, 14:40 UT Visible from Summary ------- On 2024 Oct 23 UT, the 18.8593871669384 km diameter asteroid (33776) 1999 RB158 will occult a 9.1 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 9.86 mag to 19.00 mag (the magnitude of the asteroid) for at most 0.680 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: 89 * date and approx. time of event: 2024 Oct 23, 14:37 - 2024 Oct 23, 14:44 * geocentric midpoint of event [JD]: 2460607.11177704 * magnitude of target star: 9.14 * magnitude drop [mag]: 9.86 * estimated maximum duration [s]: 0.680 * Moon: 58 % sunlit, 38° distance * Sun: 62° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 20 * 1 sigma uncertainty interval [path widths]: +/- 0.53 * 1 sigma uncertainty interval [seconds]: +/- 1.3 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.011, +/- 0.008) * 1 sigma uncertainty ellipse (major, minor, PA): (0.013", 0.002", 123°) * approx speed of asteroid's shadow [km/s]: 28.2163 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 1426-00662-1 by 33776 1999 RB158 on 2024 Oct 23 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 172 0 0 4 10 32 14 37 20.3 0 69 -54 4 4 46 4 16 18 3 58 37 4 22 26 .... 173 0 0 4 33 12 14 37 20.3 1 69 -53 4 27 26 4 38 57 4 21 18 4 45 4 0.07 174 0 0 4 55 23 14 37 20.5 2 69 -53 4 49 39 5 1 8 4 43 32 5 7 14 0.17 175 0 0 5 17 7 14 37 20.7 3 69 -52 5 11 23 5 22 50 5 5 17 5 28 56 0.20 176 0 0 5 38 22 14 37 21.0 4 69 -51 5 32 39 5 44 5 5 26 34 5 50 10 0.22 177 0 0 5 59 9 14 37 21.4 6 70 -50 5 53 27 6 4 51 5 47 22 6 10 55 0.23 178 0 0 6 19 26 14 37 21.8 7 70 -49 6 13 45 6 25 7 6 7 41 6 31 11 0.24 179 0 0 6 39 15 14 37 22.3 8 70 -48 6 33 35 6 44 55 6 27 32 6 50 58 0.25 -180 0 0 6 58 34 14 37 23.0 9 70 -47 6 52 55 7 4 14 6 46 53 7 10 15 0.25 -179 0 0 7 17 24 14 37 23.6 10 70 -46 7 11 45 7 23 3 7 5 44 7 29 3 0.26 -178 0 0 7 35 44 14 37 24.4 11 70 -45 7 30 6 7 41 22 7 24 5 7 47 22 0.26 -177 0 0 7 53 34 14 37 25.2 12 70 -44 7 47 57 7 59 11 7 41 57 8 5 10 0.26 -176 0 0 8 10 54 14 37 26.1 13 70 -43 8 5 17 8 16 30 7 59 19 8 22 29 0.26 -175 0 0 8 27 44 14 37 27.1 14 70 -42 8 22 8 8 33 20 8 16 10 8 39 17 0.26 -174 0 0 8 44 3 14 37 28.2 15 71 -41 8 38 28 8 49 38 8 32 31 8 55 35 0.27 -173 0 0 8 59 53 14 37 29.3 16 71 -40 8 54 18 9 5 27 8 48 21 9 11 23 0.27 -172 0 0 9 15 11 14 37 30.5 17 71 -40 9 9 37 9 20 45 9 3 41 9 26 40 0.27 -171 0 0 9 29 59 14 37 31.7 18 71 -39 9 24 26 9 35 32 9 18 31 9 41 27 0.27 -170 0 0 9 44 16 14 37 33.1 19 71 -38 9 38 44 9 49 49 9 32 49 9 55 43 0.27 -169 0 0 9 58 3 14 37 34.5 20 71 -37 9 52 31 10 3 34 9 46 37 10 9 28 0.27 -168 0 0 10 11 18 14 37 35.9 21 71 -36 10 5 47 10 16 49 9 59 54 10 22 42 0.27 -167 0 0 10 24 3 14 37 37.4 22 72 -35 10 18 32 10 29 33 10 12 39 10 35 26 0.27 -166 0 0 10 36 16 14 37 39.0 23 72 -34 10 30 46 10 41 46 10 24 54 10 47 38 0.27 -165 0 0 10 47 59 14 37 40.7 24 72 -33 10 42 29 10 53 28 10 36 38 10 59 19 0.28 -164 0 0 10 59 10 14 37 42.4 25 72 -32 10 53 41 11 4 39 10 47 50 11 10 30 0.28 -163 0 0 11 9 50 14 37 44.2 26 72 -31 11 4 22 11 15 19 10 58 31 11 21 9 0.28 -162 0 0 11 19 59 14 37 46.0 27 72 -30 11 14 31 11 25 27 11 8 41 11 31 17 0.28 -161 0 0 11 29 37 14 37 47.9 28 72 -29 11 24 9 11 35 4 11 18 20 11 40 53 0.28 -160 0 0 11 38 43 14 37 49.8 29 72 -28 11 33 16 11 44 10 11 27 27 11 49 59 0.28 -159 0 0 11 47 18 14 37 51.9 30 73 -27 11 41 52 11 52 45 11 36 3 11 58 33 0.28 -158 0 0 11 55 22 14 37 53.9 31 73 -26 11 49 56 12 0 49 11 44 8 12 6 36 0.28 -157 0 0 12 2 55 14 37 56.1 32 73 -25 11 57 28 12 8 21 11 51 41 12 14 8 0.28 -156 0 0 12 9 56 14 37 58.2 33 73 -24 12 4 30 12 15 21 11 58 42 12 21 8 0.28 -155 0 0 12 16 25 14 38 0.5 34 73 -23 12 11 0 12 21 51 12 5 13 12 27 37 0.28 -154 0 0 12 22 24 14 38 2.8 35 73 -22 12 16 58 12 27 49 12 11 12 12 33 35 0.28 -153 0 0 12 27 50 14 38 5.1 36 73 -21 12 22 25 12 33 15 12 16 39 12 39 1 0.28 -152 0 0 12 32 46 14 38 7.5 37 73 -20 12 27 21 12 38 10 12 21 35 12 43 56 0.28 -151 0 0 12 37 10 14 38 10.0 38 73 -19 12 31 45 12 42 34 12 25 59 12 48 20 0.28 -150 0 0 12 41 2 14 38 12.5 39 73 -18 12 35 38 12 46 26 12 29 52 12 52 12 0.28 -149 0 0 12 44 23 14 38 15.1 40 73 -17 12 38 59 12 49 47 12 33 13 12 55 32 0.28 -148 0 0 12 47 12 14 38 17.7 41 73 -16 12 41 48 12 52 36 12 36 3 12 58 22 0.28 -147 0 0 12 49 30 14 38 20.3 42 73 -16 12 44 6 12 54 54 12 38 21 13 0 39 0.28 -146 0 0 12 51 17 14 38 23.0 43 73 -15 12 45 53 12 56 40 12 40 7 13 2 25 0.28 -145 0 0 12 52 32 14 38 25.8 43 73 -14 12 47 8 12 57 55 12 41 22 13 3 40 0.28 -144 0 0 12 53 15 14 38 28.6 44 73 -13 12 47 51 12 58 38 12 42 6 13 4 23 0.28 -143 0 0 12 53 26 14 38 31.5 45 73 -12 12 48 2 12 58 50 12 42 17 13 4 35 0.28 -142 0 0 12 53 6 14 38 34.4 46 73 -11 12 47 42 12 58 30 12 41 57 13 4 15 0.28 -141 0 0 12 52 15 14 38 37.3 47 73 -10 12 46 51 12 57 38 12 41 5 13 3 23 0.28 -140 0 0 12 50 51 14 38 40.3 48 73 -9 12 45 27 12 56 15 12 39 42 13 2 0 0.28 -139 0 0 12 48 56 14 38 43.4 49 73 -8 12 43 32 12 54 20 12 37 47 13 0 6 0.28 -138 0 0 12 46 30 14 38 46.5 50 73 -7 12 41 6 12 51 54 12 35 20 12 57 39 0.29 -137 0 0 12 43 31 14 38 49.6 51 72 -6 12 38 7 12 48 56 12 32 21 12 54 41 0.29 -136 0 0 12 40 1 14 38 52.8 52 72 -5 12 34 37 12 45 26 12 28 51 12 51 11 0.29 -135 0 0 12 36 0 14 38 56.0 53 72 -4 12 30 35 12 41 24 12 24 48 12 47 10 0.29 -134 0 0 12 31 26 14 38 59.3 54 72 -3 12 26 1 12 36 51 12 20 14 12 42 37 0.29 -133 0 0 12 26 20 14 39 2.6 55 71 -2 12 20 55 12 31 46 12 15 8 12 37 32 0.29 -132 0 0 12 20 43 14 39 5.9 56 71 -1 12 15 18 12 26 9 12 9 31 12 31 55 0.29 -131 0 0 12 14 34 14 39 9.3 56 71 0 12 9 8 12 20 0 12 3 21 12 25 47 0.29 -130 0 0 12 7 53 14 39 12.7 57 70 1 12 2 27 12 13 19 11 56 39 12 19 7 0.29 -129 0 0 12 0 40 14 39 16.2 58 70 2 11 55 14 12 6 7 11 49 26 12 11 54 0.29 -128 0 0 11 52 56 14 39 19.7 59 69 3 11 47 29 11 58 22 11 41 40 12 4 10 0.29 -127 0 0 11 44 39 14 39 23.3 60 68 4 11 39 12 11 50 6 11 33 23 11 55 55 0.29 -126 0 0 11 35 50 14 39 26.8 61 68 5 11 30 23 11 41 18 11 24 33 11 47 7 0.29 -125 0 0 11 26 30 14 39 30.5 62 67 6 11 21 2 11 31 58 11 15 12 11 37 47 0.29 -124 0 0 11 16 37 14 39 34.1 63 66 7 11 11 9 11 22 6 11 5 18 11 27 56 0.29 -123 0 0 11 6 13 14 39 37.8 63 65 8 11 0 44 11 11 42 10 54 53 11 17 33 0.29 -122 0 0 10 55 17 14 39 41.6 64 64 9 10 49 47 11 0 46 10 43 55 11 6 37 0.29 -121 0 0 10 43 48 14 39 45.3 65 63 10 10 38 18 10 49 18 10 32 26 10 55 10 0.29 -120 0 0 10 31 48 14 39 49.1 66 62 11 10 26 17 10 37 19 10 20 24 10 43 11 0.29 -119 0 0 10 19 16 14 39 53.0 67 61 12 10 13 44 10 24 47 10 7 51 10 30 40 0.29 -118 0 0 10 6 12 14 39 56.8 67 59 13 10 0 40 10 11 44 9 54 46 10 17 37 0.29 -117 0 0 9 52 36 14 40 0.7 68 57 14 9 47 3 9 58 8 9 41 8 10 4 3 0.29 -116 0 0 9 38 28 14 40 4.6 69 56 15 9 32 55 9 44 1 9 26 59 9 49 56 0.29 -115 0 0 9 23 48 14 40 8.6 69 54 16 9 18 14 9 29 22 9 12 18 9 35 18 0.29 -114 0 0 9 8 37 14 40 12.6 70 52 17 9 3 2 9 14 12 8 57 5 9 20 8 0.29 -113 0 0 8 52 54 14 40 16.6 71 50 18 8 47 19 8 58 29 8 41 21 9 4 27 0.29 -112 0 0 8 36 39 14 40 20.6 71 47 19 8 31 3 8 42 15 8 25 5 8 48 13 0.29 -111 0 0 8 19 53 14 40 24.7 72 45 20 8 14 16 8 25 30 8 8 17 8 31 29 0.29 -110 0 0 8 2 36 14 40 28.8 72 42 22 7 56 58 8 8 13 7 50 58 8 14 13 0.29 -109 0 0 7 44 47 14 40 32.9 73 39 23 7 39 8 7 50 25 7 33 7 7 56 25 0.29 -108 0 0 7 26 26 14 40 37.0 73 36 24 7 20 47 7 32 6 7 14 45 7 38 7 0.29 -107 0 0 7 7 35 14 40 41.2 73 33 25 7 1 55 7 13 15 6 55 52 7 19 17 0.29 -106 0 0 6 48 13 14 40 45.4 74 29 26 6 42 32 6 53 54 6 36 28 6 59 57 0.29 -105 0 0 6 28 20 14 40 49.5 74 26 27 6 22 38 6 34 2 6 16 34 6 40 5 0.29 -104 0 0 6 7 56 14 40 53.8 74 22 28 6 2 14 6 13 39 5 56 8 6 19 44 0.29 -103 0 0 5 47 2 14 40 58.0 74 19 29 5 41 19 5 52 46 5 35 12 5 58 51 0.29 -102 0 0 5 25 38 14 41 2.2 74 15 30 5 19 54 5 31 22 5 13 46 5 37 29 0.29 -101 0 0 5 3 44 14 41 6.4 74 11 31 4 57 59 5 9 29 4 51 50 5 15 37 0.29 -100 0 0 4 41 20 14 41 10.7 74 8 32 4 35 34 4 47 6 4 29 25 4 53 15 0.29 - 99 0 0 4 18 27 14 41 15.0 73 4 33 4 12 40 4 24 14 4 6 30 4 30 24 0.29 - 98 0 0 3 55 5 14 41 19.2 73 1 34 3 49 17 4 0 53 3 43 6 4 7 3 0.29 - 97 0 0 3 31 14 14 41 23.5 73 358 35 3 25 25 3 37 2 3 19 12 3 43 14 0.29 - 96 0 0 3 6 54 14 41 27.8 72 355 37 3 1 4 3 12 44 2 54 51 3 18 56 0.29 - 95 0 0 2 42 6 14 41 32.1 72 352 38 2 36 16 2 47 57 2 30 1 2 54 10 0.29 - 94 0 0 2 16 51 14 41 36.3 71 349 39 2 10 59 2 22 43 2 4 44 2 28 57 0.29 - 93 0 0 1 51 8 14 41 40.6 70 347 40 1 45 16 1 57 1 1 39 0 2 3 16 0.29 - 92 0 0 1 24 59 14 41 44.9 70 344 41 1 19 5 1 30 52 1 12 48 1 37 9 0.28 - 91 0 0 0 58 23 14 41 49.1 69 342 42 0 52 29 1 4 18 0 46 11 1 10 35 0.28 - 90 0 0 0 31 22 14 41 53.4 68 340 43 0 25 26 0 37 17 0 19 7 0 43 35 0.28 - 89 0 0 0 3 55 14 41 57.6 68 338 44 - 0 2 2 0 9 51 - 0 8 22 0 16 10 0.28 - 88 0 0 - 0 23 57 14 42 1.8 67 336 45 - 0 29 54 - 0 18 0 - 0 36 15 - 0 11 40 0.28 - 87 0 0 - 0 52 13 14 42 6.1 66 335 46 - 0 58 11 - 0 46 15 - 1 4 33 - 0 39 54 0.28 - 86 0 0 - 1 20 52 14 42 10.2 65 333 48 - 1 26 51 - 1 14 53 - 1 33 14 - 1 8 31 0.28 - 85 0 0 - 1 49 55 14 42 14.4 64 332 49 - 1 55 54 - 1 43 55 - 2 2 18 - 1 37 32 0.28 - 84 0 0 - 2 19 19 14 42 18.6 63 330 50 - 2 25 20 - 2 13 19 - 2 31 45 - 2 6 54 0.28 - 83 0 0 - 2 49 5 14 42 22.7 62 329 51 - 2 55 7 - 2 43 4 - 3 1 33 - 2 36 39 0.28 - 82 0 0 - 3 19 12 14 42 26.8 61 328 52 - 3 25 15 - 3 13 10 - 3 31 41 - 3 6 44 0.28 - 81 0 0 - 3 49 39 14 42 30.8 60 327 53 - 3 55 43 - 3 43 36 - 4 2 10 - 3 37 10 0.28 - 80 0 0 - 4 20 26 14 42 34.8 59 326 54 - 4 26 30 - 4 14 22 - 4 32 58 - 4 7 54 0.28 - 79 0 0 - 4 51 31 14 42 38.8 58 325 55 - 4 57 36 - 4 45 26 - 5 4 5 - 4 38 58 0.28 - 78 0 0 - 5 22 53 14 42 42.8 57 324 56 - 5 28 59 - 5 16 48 - 5 35 29 - 5 10 19 0.28 - 77 0 0 - 5 54 33 14 42 46.7 56 323 58 - 6 0 39 - 5 48 27 - 6 7 10 - 5 41 56 0.28 - 76 0 0 - 6 26 28 14 42 50.6 55 322 59 - 6 32 35 - 6 20 21 - 6 39 7 - 6 13 50 0.28 - 75 0 0 - 6 58 38 14 42 54.4 54 321 60 - 7 4 46 - 6 52 31 - 7 11 18 - 6 45 59 0.28 - 74 0 0 - 7 31 3 14 42 58.1 53 321 61 - 7 37 11 - 7 24 54 - 7 43 44 - 7 18 22 0.28 - 73 0 0 - 8 3 40 14 43 1.9 52 320 62 - 8 9 49 - 7 57 31 - 8 16 23 - 7 50 58 0.28 - 72 0 0 - 8 36 30 14 43 5.5 51 319 63 - 8 42 40 - 8 30 20 - 8 49 14 - 8 23 47 0.28 - 71 0 0 - 9 9 31 14 43 9.1 50 319 64 - 9 15 41 - 9 3 21 - 9 22 16 - 8 56 47 0.28 - 70 0 0 - 9 42 42 14 43 12.7 49 318 65 - 9 48 53 - 9 36 31 - 9 55 28 - 9 29 57 0.28 - 69 0 0 -10 16 2 14 43 16.2 48 317 66 -10 22 13 -10 9 51 -10 28 49 -10 3 16 0.28 - 68 0 0 -10 49 30 14 43 19.6 47 317 67 -10 55 42 -10 43 19 -11 2 19 -10 36 43 0.28 - 67 0 0 -11 23 6 14 43 23.0 46 316 68 -11 29 18 -11 16 54 -11 35 55 -11 10 17 0.28 - 66 0 0 -11 56 47 14 43 26.3 44 316 69 -12 3 0 -11 50 35 -12 9 37 -11 43 58 0.28 - 65 0 0 -12 30 34 14 43 29.5 43 315 70 -12 36 47 -12 24 21 -12 43 24 -12 17 44 0.28 - 64 0 0 -13 4 24 14 43 32.7 42 315 71 -13 10 37 -12 58 11 -13 17 15 -12 51 33 0.28 - 63 0 0 -13 38 17 14 43 35.8 41 314 72 -13 44 30 -13 32 3 -13 51 9 -13 25 25 0.28 - 62 0 0 -14 12 11 14 43 38.8 40 314 73 -14 18 25 -14 5 58 -14 25 4 -13 59 20 0.28 - 61 0 0 -14 46 7 14 43 41.8 39 313 74 -14 52 21 -14 39 53 -14 59 0 -14 33 14 0.28 - 60 0 0 -15 20 2 14 43 44.7 38 313 75 -15 26 16 -15 13 47 -15 32 55 -15 7 9 0.28 - 59 0 0 -15 53 55 14 43 47.5 37 312 76 -16 0 9 -15 47 41 -16 6 49 -15 41 2 0.28 - 58 0 0 -16 27 46 14 43 50.2 36 312 76 -16 34 0 -16 21 31 -16 40 40 -16 14 53 0.28 - 57 0 0 -17 1 33 14 43 52.8 35 311 77 -17 7 48 -16 55 18 -17 14 27 -16 48 40 0.28 - 56 0 0 -17 35 15 14 43 55.4 34 311 78 -17 41 30 -17 29 1 -17 48 10 -17 22 22 0.28 - 55 0 0 -18 8 52 14 43 57.9 32 311 78 -18 15 7 -18 2 38 -18 21 46 -17 55 59 0.28 - 54 0 0 -18 42 22 14 44 0.3 31 310 79 -18 48 37 -18 36 8 -18 55 16 -18 29 29 0.28 - 53 0 0 -19 15 44 14 44 2.6 30 310 79 -19 21 59 -19 9 30 -19 28 38 -19 2 51 0.28 - 52 0 0 -19 48 58 14 44 4.8 29 309 79 -19 55 12 -19 42 44 -20 1 51 -19 36 5 0.28 - 51 0 0 -20 22 1 14 44 7.0 28 309 80 -20 28 16 -20 15 47 -20 34 55 -20 9 9 0.28 - 50 0 0 -20 54 55 14 44 9.0 27 308 80 -21 1 9 -20 48 41 -21 7 48 -20 42 3 0.28 - 49 0 0 -21 27 36 14 44 11.0 26 308 80 -21 33 50 -21 21 23 -21 40 29 -21 14 45 0.28 - 48 0 0 -22 0 5 14 44 12.9 25 307 79 -22 6 19 -21 53 52 -22 12 57 -21 47 14 0.28 - 47 0 0 -22 32 21 14 44 14.7 24 307 79 -22 38 34 -22 26 8 -22 45 12 -22 19 31 0.28 - 46 0 0 -23 4 22 14 44 16.4 23 307 79 -23 10 35 -22 58 10 -23 17 13 -22 51 33 0.28 - 45 0 0 -23 36 9 14 44 18.1 22 306 78 -23 42 21 -23 29 57 -23 48 59 -23 23 20 0.28 - 44 0 0 -24 7 40 14 44 19.6 21 306 78 -24 13 52 -24 1 28 -24 20 29 -23 54 52 0.28 - 43 0 0 -24 38 54 14 44 21.1 20 305 77 -24 45 6 -24 32 43 -24 51 42 -24 26 7 0.28 - 42 0 0 -25 9 51 14 44 22.5 19 305 76 -25 16 2 -25 3 40 -25 22 38 -24 57 5 0.28 - 41 0 0 -25 40 30 14 44 23.8 17 304 76 -25 46 40 -25 34 20 -25 53 16 -25 27 45 0.28 - 40 0 0 -26 10 50 14 44 25.1 16 304 75 -26 17 0 -26 4 40 -26 23 35 -25 58 7 0.28 - 39 0 0 -26 40 51 14 44 26.2 15 303 74 -26 47 0 -26 34 42 -26 53 34 -26 28 9 0.28 - 38 0 0 -27 10 32 14 44 27.3 14 303 73 -27 16 41 -27 4 24 -27 23 14 -26 57 51 0.28 - 37 0 0 -27 39 53 14 44 28.3 13 302 72 -27 46 1 -27 33 45 -27 52 33 -27 27 13 0.28 - 36 0 0 -28 8 52 14 44 29.2 12 302 72 -28 15 0 -28 2 45 -28 21 32 -27 56 14 0.28 - 35 0 0 -28 37 30 14 44 30.1 11 301 71 -28 43 37 -28 31 24 -28 50 8 -28 24 53 0.28 - 34 0 0 -29 5 46 14 44 30.8 10 301 70 -29 11 52 -28 59 40 -29 18 23 -28 53 11 0.28 - 33 0 0 -29 33 40 14 44 31.5 9 300 69 -29 39 45 -29 27 35 -29 46 15 -29 21 6 0.28 - 32 0 0 -30 1 10 14 44 32.1 8 300 68 -30 7 15 -29 55 6 -30 13 44 -29 48 38 0.28 - 31 0 0 -30 28 18 14 44 32.7 7 299 67 -30 34 21 -30 22 14 -30 40 49 -30 15 47 0.28 - 30 0 0 -30 55 1 14 44 33.2 6 299 66 -31 1 4 -30 48 58 -31 7 31 -30 42 32 0.28 - 29 0 0 -31 21 21 14 44 33.6 6 298 65 -31 27 23 -31 15 19 -31 33 49 -31 8 53 0.28 - 28 0 0 -31 47 16 14 44 33.9 5 298 65 -31 53 18 -31 41 15 -31 59 43 -31 34 50 0.28 - 27 0 0 -32 12 47 14 44 34.2 4 297 64 -32 18 48 -32 6 47 -32 25 12 -32 0 23 0.27 - 26 0 0 -32 37 53 14 44 34.4 3 297 63 -32 43 53 -32 31 54 -32 50 16 -32 25 31 0.27 - 25 0 0 -33 2 34 14 44 34.5 2 296 62 -33 8 33 -32 56 35 -33 14 55 -32 50 13 0.27 - 24 0 0 -33 26 50 14 44 34.6 1 296 61 -33 32 48 -33 20 52 -33 39 9 -33 14 31 0.26 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: TYC 1426-00662-1 * constellation : Leo * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 10 19 18.4856 DE: +20 57 33.046 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 10 19 18.4857 DE: +20 57 33.045 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.300,0.600) * V mag [mag]: 9.1 * B mag [mag]: 9.7 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (33776) 1999 RB158 asteroid class: approx. diameter [km]: 19 approx. diameter ["]: 0.007 distance from Earth [AU]: 3.84150 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#50 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): 0.013", 0.002", 123.227° remarks: * orbital elements for (33776)1999 RB158 : Mean anomaly = 198.2773885834 deg Arg. of pericenter = 303.7297534065 deg Long. of node = 354.4382178809 deg Inclination = 16.5058805686 deg Eccentricity = 0.1051582886 Semimajor axis = 3.1637222471 AU Perihelion dist = 2.8310306300 AU Mag: H = 12.54, G = 0.15 Epoch of elements : MJD 60606.61177696 TDT (2024 Oct 23.6118) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#502023Apr27,0.68,2024,10,23,14.682649,-0.095708,-0.258082,14.934450,-5.531870,-0.004655,0.002356,-0.000001,0.000000 -97.5819,20.8355,-44.18,-11.71,False TYC 1426-00662-1,10.32180151,20.9591796,9.72,9.14,8.83,0.1,0,,10.34429334,20.8355149,9.86,9.72,0,0,0 33776,1999 RB158,19.00,19.138,3.8415,0,0,2.439,-12.67,,1.8,0 0,198.1702,2024,10,23,303.7298,354.4382,16.5059,0.10516,3.16372,2.83103,12.55,5.0,0.15 1.533,0.0133,0.0022,123,0.0037,Known errors,1.18,0,-1,-1 20241023_0662-1,60140.65 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 15:42 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org