IOTA/IOTA-ES occultation update for (3746) Heyuan / TYC 839-00199-1 event on 2024 Mar 12, 04:01 UT Visible from Summary ------- On 2024 Mar 12 UT, the 15.055 km diameter asteroid (3746) Heyuan will occult a 11.6 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 6.99 mag to 18.58 mag (the magnitude of the asteroid) for at most 0.930 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 Mar 12, 03:55 - 2024 Mar 12, 04:07 * geocentric midpoint of event [JD]: 2460381.66753562 * magnitude of target star: 11.59 * magnitude drop [mag]: 6.99 * estimated maximum duration [s]: 0.930 * Moon: 5 % sunlit, 140° distance * Sun: 165° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 17 * 1 sigma uncertainty interval [path widths]: +/- 0.29 * 1 sigma uncertainty interval [seconds]: +/- 2.1 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.014, +/- 0.007) * 1 sigma uncertainty ellipse (major, minor, PA): (0.016", 0.002", 114°) * approx speed of asteroid's shadow [km/s]: 16.1454 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 839-00199-1 by 3746 Heyuan on 2024 Mar 12 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 -174 0 0 49 53 37 4 6 57.5 0 75 13 49 58 28 49 48 47 50 1 15 49 46 0 .... -173 0 0 50 3 51 4 6 57.5 1 76 12 50 8 41 49 59 2 50 11 28 49 56 15 -0.44 -172 0 0 50 13 46 4 6 57.4 1 77 12 50 18 36 50 8 57 50 21 22 50 6 11 -0.50 -171 0 0 50 23 23 4 6 57.2 2 77 11 50 28 12 50 18 34 50 30 58 50 15 48 -0.52 -170 0 0 50 32 40 4 6 57.0 3 78 11 50 37 29 50 27 52 50 40 14 50 25 6 -0.53 -169 0 0 50 41 39 4 6 56.7 3 79 10 50 46 27 50 36 51 50 49 13 50 34 6 -0.54 -168 0 0 50 50 19 4 6 56.4 4 80 9 50 55 7 50 45 32 50 57 52 50 42 47 -0.54 -167 0 0 50 58 41 4 6 56.0 5 80 9 51 3 28 50 53 54 51 6 13 50 51 9 -0.54 -166 0 0 51 6 44 4 6 55.5 5 81 8 51 11 31 51 1 58 51 14 16 50 59 13 -0.55 -165 0 0 51 14 30 4 6 55.0 6 82 7 51 19 16 51 9 44 51 22 1 51 6 59 -0.55 -164 0 0 51 21 57 4 6 54.4 7 83 7 51 26 43 51 17 11 51 29 27 51 14 27 -0.55 -163 0 0 51 29 5 4 6 53.8 7 84 6 51 33 51 51 24 20 51 36 35 51 21 36 -0.55 -162 0 0 51 35 56 4 6 53.2 8 84 5 51 40 42 51 31 11 51 43 25 51 28 28 -0.55 -161 0 0 51 42 29 4 6 52.4 9 85 5 51 47 14 51 37 45 51 49 58 51 35 1 -0.55 -160 0 0 51 48 44 4 6 51.7 9 86 4 51 53 29 51 44 0 51 56 12 51 41 17 -0.56 -159 0 0 51 54 41 4 6 50.9 10 87 4 51 59 26 51 49 57 52 2 9 51 47 14 -0.56 -158 0 0 52 0 21 4 6 50.0 10 88 3 52 5 5 51 55 37 52 7 48 51 52 54 -0.56 -157 0 0 52 5 43 4 6 49.1 11 88 2 52 10 26 52 0 59 52 13 9 51 58 17 -0.56 -156 0 0 52 10 47 4 6 48.1 12 89 2 52 15 30 52 6 4 52 18 13 52 3 21 -0.56 -155 0 0 52 15 33 4 6 47.1 12 90 1 52 20 17 52 10 51 52 22 59 52 8 8 -0.56 -154 0 0 52 20 3 4 6 46.0 13 91 0 52 24 46 52 15 20 52 27 28 52 12 38 -0.56 -153 0 0 52 24 15 4 6 44.9 13 92 0 52 28 57 52 19 32 52 31 40 52 16 50 -0.56 -152 0 0 52 28 9 4 6 43.8 14 92 -1 52 32 51 52 23 27 52 35 34 52 20 45 -0.56 -151 0 0 52 31 46 4 6 42.6 15 93 -1 52 36 28 52 27 4 52 39 11 52 24 22 -0.56 -150 0 0 52 35 6 4 6 41.3 15 94 -2 52 39 48 52 30 25 52 42 30 52 27 43 -0.56 -149 0 0 52 38 9 4 6 40.0 16 95 -3 52 42 51 52 33 28 52 45 33 52 30 46 -0.56 -148 0 0 52 40 55 4 6 38.7 16 96 -3 52 45 37 52 36 13 52 48 18 52 33 32 -0.56 -147 0 0 52 43 23 4 6 37.3 17 96 -4 52 48 5 52 38 42 52 50 47 52 36 1 -0.56 -146 0 0 52 45 35 4 6 35.8 18 97 -4 52 50 16 52 40 54 52 52 58 52 38 12 -0.56 -145 0 0 52 47 30 4 6 34.4 18 98 -5 52 52 11 52 42 48 52 54 53 52 40 7 -0.56 -144 0 0 52 49 7 4 6 32.8 19 99 -6 52 53 48 52 44 26 52 56 30 52 41 45 -0.56 -143 0 0 52 50 28 4 6 31.3 19 100 -6 52 55 9 52 45 47 52 57 51 52 43 6 -0.56 -142 0 0 52 51 32 4 6 29.7 20 101 -7 52 56 13 52 46 51 52 58 54 52 44 9 -0.56 -141 0 0 52 52 18 4 6 28.0 21 101 -7 52 56 59 52 47 37 52 59 41 52 44 56 -0.56 -140 0 0 52 52 48 4 6 26.3 21 102 -8 52 57 29 52 48 7 53 0 11 52 45 26 -0.56 -139 0 0 52 53 1 4 6 24.6 22 103 -9 52 57 43 52 48 21 53 0 24 52 45 39 -0.56 -138 0 0 52 52 58 4 6 22.8 22 104 -9 52 57 39 52 48 17 53 0 20 52 45 35 -0.56 -137 0 0 52 52 37 4 6 20.9 23 105 -10 52 57 18 52 47 56 53 0 0 52 45 15 -0.56 -136 0 0 52 52 0 4 6 19.0 23 106 -10 52 56 41 52 47 19 52 59 22 52 44 37 -0.57 -135 0 0 52 51 5 4 6 17.1 24 106 -11 52 55 47 52 46 24 52 58 28 52 43 43 -0.57 -134 0 0 52 49 54 4 6 15.1 25 107 -12 52 54 36 52 45 13 52 57 17 52 42 32 -0.57 -133 0 0 52 48 26 4 6 13.1 25 108 -12 52 53 8 52 43 45 52 55 49 52 41 3 -0.57 -132 0 0 52 46 41 4 6 11.1 26 109 -13 52 51 23 52 42 0 52 54 5 52 39 18 -0.57 -131 0 0 52 44 40 4 6 9.0 26 110 -13 52 49 21 52 39 58 52 52 3 52 37 16 -0.57 -130 0 0 52 42 21 4 6 6.8 27 111 -14 52 47 3 52 37 39 52 49 45 52 34 58 -0.57 -129 0 0 52 39 46 4 6 4.6 28 112 -15 52 44 28 52 35 4 52 47 10 52 32 22 -0.57 -128 0 0 52 36 53 4 6 2.4 28 113 -15 52 41 35 52 32 11 52 44 18 52 29 29 -0.57 -127 0 0 52 33 44 4 6 0.1 29 113 -16 52 38 26 52 29 2 52 41 9 52 26 19 -0.57 -126 0 0 52 30 17 4 5 57.7 29 114 -16 52 35 0 52 25 35 52 37 43 52 22 53 -0.57 -125 0 0 52 26 34 4 5 55.3 30 115 -17 52 31 17 52 21 52 52 34 0 52 19 9 -0.57 -124 0 0 52 22 34 4 5 52.9 30 116 -18 52 27 17 52 17 51 52 30 0 52 15 8 -0.57 -123 0 0 52 18 16 4 5 50.4 31 117 -18 52 23 0 52 13 33 52 25 43 52 10 51 -0.57 -122 0 0 52 13 42 4 5 47.9 32 118 -19 52 18 26 52 8 59 52 21 9 52 6 16 -0.57 -121 0 0 52 8 50 4 5 45.3 32 119 -19 52 13 34 52 4 7 52 16 18 52 1 24 -0.57 -120 0 0 52 3 42 4 5 42.7 33 120 -20 52 8 26 51 58 57 52 11 9 51 56 14 -0.57 -119 0 0 51 58 15 4 5 40.0 33 121 -21 52 3 0 51 53 31 52 5 44 51 50 48 -0.57 -118 0 0 51 52 32 4 5 37.3 34 122 -21 51 57 17 51 47 47 52 0 1 51 45 4 -0.57 -117 0 0 51 46 31 4 5 34.6 34 123 -22 51 51 17 51 41 46 51 54 1 51 39 3 -0.57 -116 0 0 51 40 13 4 5 31.7 35 124 -22 51 44 59 51 35 28 51 47 43 51 32 44 -0.57 -115 0 0 51 33 38 4 5 28.9 36 124 -23 51 38 24 51 28 52 51 41 8 51 26 8 -0.57 -114 0 0 51 26 45 4 5 26.0 36 125 -24 51 31 31 51 21 59 51 34 16 51 19 15 -0.57 -113 0 0 51 19 35 4 5 23.0 37 126 -24 51 24 21 51 14 48 51 27 6 51 12 3 -0.57 -112 0 0 51 12 7 4 5 20.0 37 127 -25 51 16 54 51 7 20 51 19 39 51 4 35 -0.57 -111 0 0 51 4 21 4 5 16.9 38 128 -25 51 9 8 50 59 33 51 11 54 50 56 48 -0.57 -110 0 0 50 56 17 4 5 13.8 38 129 -26 51 1 5 50 51 30 51 3 51 50 48 44 -0.57 -109 0 0 50 47 56 4 5 10.6 39 130 -27 50 52 45 50 43 8 50 55 31 50 40 22 -0.57 -108 0 0 50 39 17 4 5 7.4 40 131 -27 50 44 6 50 34 28 50 46 52 50 31 43 -0.57 -107 0 0 50 30 20 4 5 4.1 40 132 -28 50 35 10 50 25 31 50 37 56 50 22 45 -0.57 -106 0 0 50 21 6 4 5 0.7 41 133 -28 50 25 55 50 16 16 50 28 42 50 13 30 -0.57 -105 0 0 50 11 33 4 4 57.3 41 134 -29 50 16 23 50 6 43 50 19 10 50 3 56 -0.57 -104 0 0 50 1 42 4 4 53.9 42 135 -30 50 6 33 49 56 51 50 9 20 49 54 4 -0.57 -103 0 0 49 51 33 4 4 50.4 42 137 -30 49 56 25 49 46 42 49 59 12 49 43 55 -0.57 -102 0 0 49 41 6 4 4 46.8 43 138 -31 49 45 58 49 36 14 49 48 46 49 33 27 -0.57 -101 0 0 49 30 21 4 4 43.2 43 139 -31 49 35 13 49 25 29 49 38 1 49 22 41 -0.57 -100 0 0 49 19 17 4 4 39.5 44 140 -32 49 24 10 49 14 25 49 26 59 49 11 37 -0.57 - 99 0 0 49 7 56 4 4 35.8 45 141 -33 49 12 49 49 3 2 49 15 38 49 0 14 -0.57 - 98 0 0 48 56 16 4 4 32.0 45 142 -33 49 1 10 48 51 22 49 3 59 48 48 33 -0.57 - 97 0 0 48 44 17 4 4 28.2 46 143 -34 48 49 12 48 39 23 48 52 1 48 36 34 -0.57 - 96 0 0 48 32 1 4 4 24.3 46 144 -35 48 36 56 48 27 6 48 39 46 48 24 16 -0.57 - 95 0 0 48 19 26 4 4 20.3 47 146 -35 48 24 21 48 14 30 48 27 11 48 11 40 -0.57 - 94 0 0 48 6 32 4 4 16.3 47 147 -36 48 11 28 48 1 36 48 14 19 47 58 46 -0.57 - 93 0 0 47 53 20 4 4 12.2 48 148 -36 47 58 17 47 48 23 48 1 7 47 45 33 -0.57 - 92 0 0 47 39 49 4 4 8.1 48 149 -37 47 44 47 47 34 52 47 47 38 47 32 2 -0.57 - 91 0 0 47 26 0 4 4 3.9 49 150 -38 47 30 58 47 21 3 47 33 50 47 18 12 -0.57 - 90 0 0 47 11 53 4 3 59.6 49 152 -38 47 16 51 47 6 55 47 19 43 47 4 4 -0.57 - 89 0 0 46 57 27 4 3 55.3 50 153 -39 47 2 26 46 52 28 47 5 18 46 49 37 -0.57 - 88 0 0 46 42 43 4 3 50.9 51 154 -40 46 47 42 46 37 43 46 50 35 46 34 51 -0.57 - 87 0 0 46 27 40 4 3 46.5 51 156 -40 46 32 40 46 22 40 46 35 33 46 19 48 -0.57 - 86 0 0 46 12 19 4 3 42.0 52 157 -41 46 17 19 46 7 18 46 20 12 46 4 26 -0.57 - 85 0 0 45 56 39 4 3 37.4 52 158 -41 46 1 40 45 51 38 46 4 34 45 48 45 -0.57 - 84 0 0 45 40 41 4 3 32.8 53 160 -42 45 45 43 45 35 40 45 48 36 45 32 46 -0.57 - 83 0 0 45 24 25 4 3 28.1 53 161 -43 45 29 27 45 19 23 45 32 21 45 16 29 -0.57 - 82 0 0 45 7 50 4 3 23.4 53 163 -43 45 12 53 45 2 48 45 15 48 44 59 54 -0.57 - 81 0 0 44 50 58 4 3 18.6 54 164 -44 44 56 1 44 45 55 44 58 56 44 43 1 -0.57 - 80 0 0 44 33 47 4 3 13.7 54 166 -44 44 38 51 44 28 44 44 41 46 44 25 49 -0.57 - 79 0 0 44 16 19 4 3 8.8 55 167 -45 44 21 23 44 11 15 44 24 18 44 8 20 -0.57 - 78 0 0 43 58 32 4 3 3.8 55 169 -46 44 3 37 43 53 28 44 6 33 43 50 33 -0.57 - 77 0 0 43 40 28 4 2 58.8 56 170 -46 43 45 34 43 35 23 43 48 29 43 32 28 -0.57 - 76 0 0 43 22 7 4 2 53.7 56 172 -47 43 27 13 43 17 1 43 30 8 43 14 5 -0.57 - 75 0 0 43 3 27 4 2 48.6 57 174 -47 43 8 34 42 58 21 43 11 30 42 55 25 -0.57 - 74 0 0 42 44 31 4 2 43.4 57 176 -48 42 49 38 42 39 24 42 52 34 42 36 28 -0.57 - 73 0 0 42 25 17 4 2 38.1 57 177 -49 42 30 25 42 20 10 42 33 22 42 17 14 -0.57 - 72 0 0 42 5 47 4 2 32.8 58 179 -49 42 10 55 42 0 39 42 13 52 41 57 43 -0.57 - 71 0 0 41 46 0 4 2 27.4 58 181 -50 41 51 8 41 40 52 41 54 5 41 37 55 -0.57 - 70 0 0 41 25 56 4 2 22.0 58 183 -50 41 31 5 41 20 47 41 34 2 41 17 50 -0.57 - 69 0 0 41 5 36 4 2 16.5 59 185 -51 41 10 45 41 0 27 41 13 43 40 57 30 -0.57 - 68 0 0 40 45 0 4 2 10.9 59 187 -51 40 50 9 40 39 51 40 53 7 40 36 53 -0.57 - 67 0 0 40 24 8 4 2 5.4 59 188 -52 40 29 18 40 18 58 40 32 16 40 16 1 -0.57 - 66 0 0 40 3 1 4 1 59.7 59 190 -52 40 8 11 39 57 51 40 11 9 39 54 53 -0.57 - 65 0 0 39 41 38 4 1 54.1 60 192 -53 39 46 49 39 36 28 39 49 47 39 33 30 -0.57 - 64 0 0 39 20 1 4 1 48.3 60 194 -53 39 25 12 39 14 50 39 28 10 39 11 52 -0.57 - 63 0 0 38 58 9 4 1 42.6 60 196 -54 39 3 20 38 52 58 39 6 19 38 49 59 -0.57 - 62 0 0 38 36 2 4 1 36.7 60 199 -54 38 41 14 38 30 51 38 44 13 38 27 52 -0.57 - 61 0 0 38 13 42 4 1 30.9 60 201 -55 38 18 54 38 8 30 38 21 53 38 5 31 -0.57 - 60 0 0 37 51 8 4 1 25.0 60 203 -55 37 56 20 37 45 56 37 59 20 37 42 57 -0.57 - 59 0 0 37 28 21 4 1 19.1 60 205 -56 37 33 33 37 23 9 37 36 33 37 20 10 -0.57 - 58 0 0 37 5 21 4 1 13.1 60 207 -56 37 10 34 37 0 9 37 13 34 36 57 10 -0.57 - 57 0 0 36 42 9 4 1 7.1 60 209 -57 36 47 22 36 36 57 36 50 22 36 33 57 -0.57 - 56 0 0 36 18 45 4 1 1.1 60 211 -57 36 23 58 36 13 33 36 26 58 36 10 33 -0.57 - 55 0 0 35 55 10 4 0 55.0 60 213 -57 36 0 23 35 49 57 36 3 23 35 46 57 -0.57 - 54 0 0 35 31 23 4 0 48.9 60 215 -58 35 36 36 35 26 10 35 39 37 35 23 11 -0.57 - 53 0 0 35 7 26 4 0 42.8 60 217 -58 35 12 40 35 2 13 35 15 40 34 59 13 -0.57 - 52 0 0 34 43 19 4 0 36.7 60 219 -58 34 48 33 34 38 6 34 51 33 34 35 6 -0.57 - 51 0 0 34 19 2 4 0 30.5 59 222 -58 34 24 16 34 13 49 34 27 16 34 10 49 -0.57 - 50 0 0 33 54 37 4 0 24.3 59 224 -58 33 59 50 33 49 23 34 2 51 33 46 23 -0.57 - 49 0 0 33 30 2 4 0 18.1 59 225 -59 33 35 16 33 24 49 33 38 16 33 21 49 -0.57 - 48 0 0 33 5 20 4 0 11.9 59 227 -59 33 10 34 33 0 7 33 13 34 32 57 7 -0.57 - 47 0 0 32 40 31 4 0 5.7 58 229 -59 32 45 44 32 35 17 32 48 45 32 32 17 -0.57 - 46 0 0 32 15 34 3 59 59.5 58 231 -59 32 20 48 32 10 21 32 23 48 32 7 21 -0.57 - 45 0 0 31 50 31 3 59 53.3 57 233 -59 31 55 45 31 45 18 31 58 45 31 42 18 -0.57 - 44 0 0 31 25 23 3 59 47.1 57 235 -59 31 30 37 31 20 10 31 33 37 31 17 10 -0.57 - 43 0 0 31 0 9 3 59 40.9 57 237 -59 31 5 23 30 54 56 31 8 23 30 51 57 -0.57 - 42 0 0 30 34 51 3 59 34.7 56 238 -59 30 40 5 30 29 38 30 43 5 30 26 39 -0.57 - 41 0 0 30 9 30 3 59 28.5 56 240 -59 30 14 43 30 4 17 30 17 43 30 1 17 -0.57 - 40 0 0 29 44 4 3 59 22.4 55 242 -59 29 49 17 29 38 52 29 52 17 29 35 52 -0.57 - 39 0 0 29 18 37 3 59 16.2 54 243 -59 29 23 50 29 13 24 29 26 49 29 10 25 -0.57 - 38 0 0 28 53 7 3 59 10.1 54 245 -58 28 58 20 28 47 55 29 1 19 28 44 55 -0.57 - 37 0 0 28 27 36 3 59 4.0 53 246 -58 28 32 48 28 22 24 28 35 48 28 19 25 -0.57 - 36 0 0 28 2 4 3 58 57.9 53 248 -58 28 7 16 27 56 52 28 10 16 27 53 53 -0.57 - 35 0 0 27 36 32 3 58 51.8 52 249 -58 27 41 44 27 31 20 27 44 43 27 28 22 -0.57 - 34 0 0 27 11 1 3 58 45.8 51 250 -57 27 16 12 27 5 49 27 19 11 27 2 51 -0.57 - 33 0 0 26 45 31 3 58 39.8 51 252 -57 26 50 42 26 40 20 26 53 41 26 37 21 -0.57 - 32 0 0 26 20 2 3 58 33.9 50 253 -57 26 25 13 26 14 52 26 28 12 26 11 53 -0.57 - 31 0 0 25 54 37 3 58 28.0 49 254 -56 25 59 47 25 49 26 26 2 46 25 46 28 -0.57 - 30 0 0 25 29 14 3 58 22.2 49 255 -56 25 34 24 25 24 4 25 37 23 25 21 6 -0.57 - 29 0 0 25 3 55 3 58 16.4 48 256 -55 25 9 5 24 58 46 25 12 4 24 55 48 -0.57 - 28 0 0 24 38 41 3 58 10.6 47 257 -55 24 43 51 24 33 32 24 46 49 24 30 34 -0.57 - 27 0 0 24 13 32 3 58 5.0 46 258 -54 24 18 41 24 8 23 24 21 39 24 5 26 -0.57 - 26 0 0 23 48 29 3 57 59.4 45 259 -54 23 53 38 23 43 20 23 56 35 23 40 23 -0.57 - 25 0 0 23 23 32 3 57 53.8 45 260 -53 23 28 40 23 18 24 23 31 38 23 15 27 -0.57 - 24 0 0 22 58 42 3 57 48.3 44 261 -52 23 3 50 22 53 35 23 6 47 22 50 38 -0.57 - 23 0 0 22 34 0 3 57 42.9 43 262 -52 22 39 8 22 28 53 22 42 5 22 25 57 -0.57 - 22 0 0 22 9 27 3 57 37.6 42 263 -51 22 14 34 22 4 20 22 17 30 22 1 24 -0.57 - 21 0 0 21 45 2 3 57 32.3 41 264 -50 21 50 9 21 39 56 21 53 5 21 37 0 -0.57 - 20 0 0 21 20 47 3 57 27.1 40 265 -50 21 25 53 21 15 41 21 28 49 21 12 46 -0.57 - 19 0 0 20 56 42 3 57 22.1 40 265 -49 21 1 48 20 51 37 21 4 43 20 48 41 -0.57 - 18 0 0 20 32 48 3 57 17.0 39 266 -48 20 37 53 20 27 43 20 40 49 20 24 48 -0.57 - 17 0 0 20 9 5 3 57 12.1 38 267 -48 20 14 10 20 4 1 20 17 5 20 1 6 -0.57 - 16 0 0 19 45 35 3 57 7.3 37 267 -47 19 50 39 19 40 31 19 53 34 19 37 36 -0.57 - 15 0 0 19 22 16 3 57 2.6 36 268 -46 19 27 20 19 17 13 19 30 15 19 14 19 -0.57 - 14 0 0 18 59 11 3 56 58.0 35 269 -45 19 4 15 18 54 9 19 7 9 18 51 15 -0.57 - 13 0 0 18 36 20 3 56 53.4 34 269 -44 18 41 23 18 31 18 18 44 17 18 28 24 -0.57 - 12 0 0 18 13 43 3 56 49.0 33 270 -44 18 18 45 18 8 42 18 21 39 18 5 48 -0.57 - 11 0 0 17 51 21 3 56 44.7 32 270 -43 17 56 23 17 46 20 17 59 16 17 43 27 -0.57 - 10 0 0 17 29 14 3 56 40.5 31 271 -42 17 34 15 17 24 14 17 37 8 17 21 21 -0.57 - 9 0 0 17 7 23 3 56 36.4 30 271 -41 17 12 24 17 2 23 17 15 16 16 59 31 -0.57 - 8 0 0 16 45 49 3 56 32.4 29 272 -40 16 50 49 16 40 49 16 53 41 16 37 57 -0.57 - 7 0 0 16 24 31 3 56 28.5 28 272 -39 16 29 30 16 19 32 16 32 22 16 16 40 -0.57 - 6 0 0 16 3 30 3 56 24.7 28 273 -39 16 8 29 15 58 32 16 11 21 15 55 40 -0.57 - 5 0 0 15 42 48 3 56 21.1 27 273 -38 15 47 46 15 37 50 15 50 37 15 34 59 -0.58 - 4 0 0 15 22 23 3 56 17.6 26 274 -37 15 27 21 15 17 26 15 30 12 15 14 35 -0.58 - 3 0 0 15 2 17 3 56 14.2 25 274 -36 15 7 15 14 57 21 15 10 5 14 54 30 -0.58 - 2 0 0 14 42 31 3 56 10.9 24 274 -35 14 47 28 14 37 35 14 50 18 14 34 44 -0.58 - 1 0 0 14 23 4 3 56 7.7 23 275 -34 14 28 0 14 18 8 14 30 50 14 15 18 -0.58 - 0 0 0 14 3 57 3 56 4.7 22 275 -33 14 8 53 13 59 2 14 11 42 13 56 12 -0.58 1 0 0 13 45 10 3 56 1.8 21 275 -32 13 50 5 13 40 16 13 52 55 13 37 26 -0.58 2 0 0 13 26 45 3 55 59.0 20 276 -31 13 31 39 13 21 50 13 34 28 13 19 1 -0.58 3 0 0 13 8 40 3 55 56.4 19 276 -30 13 13 34 13 3 46 13 16 23 13 0 58 -0.58 4 0 0 12 50 57 3 55 53.9 18 276 -29 12 55 50 12 46 4 12 58 39 12 43 15 -0.58 5 0 0 12 33 36 3 55 51.5 17 276 -28 12 38 29 12 28 43 12 41 17 12 25 55 -0.58 6 0 0 12 16 37 3 55 49.3 16 277 -28 12 21 29 12 11 45 12 24 17 12 8 57 -0.59 7 0 0 12 0 0 3 55 47.2 15 277 -27 12 4 52 11 55 9 12 7 40 11 52 21 -0.59 8 0 0 11 43 47 3 55 45.2 14 277 -26 11 48 38 11 38 56 11 51 26 11 36 8 -0.59 9 0 0 11 27 57 3 55 43.3 13 277 -25 11 32 48 11 23 6 11 35 35 11 20 19 -0.59 10 0 0 11 12 30 3 55 41.6 12 278 -24 11 17 20 11 7 40 11 20 7 11 4 53 -0.59 11 0 0 10 57 27 3 55 40.1 11 278 -23 11 2 17 10 52 37 11 5 4 10 49 51 -0.60 12 0 0 10 42 48 3 55 38.6 10 278 -22 10 47 38 10 37 59 10 50 24 10 35 13 -0.60 13 0 0 10 28 34 3 55 37.4 9 278 -21 10 33 23 10 23 45 10 36 9 10 20 59 -0.61 14 0 0 10 14 44 3 55 36.2 8 278 -20 10 19 32 10 9 55 10 22 18 10 7 10 -0.61 15 0 0 10 1 19 3 55 35.2 7 279 -19 10 6 7 9 56 31 10 8 53 9 53 45 -0.62 16 0 0 9 48 19 3 55 34.3 6 279 -18 9 53 7 9 43 31 9 55 52 9 40 46 -0.63 17 0 0 9 35 44 3 55 33.6 5 279 -17 9 40 32 9 30 57 9 43 17 9 28 12 -0.64 18 0 0 9 23 35 3 55 33.0 4 279 -16 9 28 22 9 18 48 9 31 7 9 16 4 -0.66 19 0 0 9 11 52 3 55 32.5 3 279 -15 9 16 39 9 7 6 9 19 24 9 4 21 -0.69 20 0 0 9 0 35 3 55 32.2 2 280 -14 9 5 21 8 55 49 9 8 6 8 53 4 -0.77 21 0 0 8 49 44 3 55 32.0 1 280 -13 8 54 30 8 44 58 8 57 14 8 42 14 -1.03 Uncertainty in time = +/- 2 secs Prediction of 2023 Jul 14.2 Data for the target star ------------------------ * name: TYC 839-00199-1 * constellation : Leo * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 10 36 30.9427 DE: +09 47 43.797 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 10 36 30.9427 DE: +09 47 43.798 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.300,0.200) * V mag [mag]: 11.6 * B mag [mag]: 11.9 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (3746) Heyuan asteroid class: approx. diameter [km]: 15 approx. diameter ["]: 0.007 distance from Earth [AU]: 2.96990 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): 0.016", 0.002", 114° remarks: * orbital elements for (3746)Heyuan : Mean anomaly = 199.3861854720 deg Arg. of pericenter = 304.1268537882 deg Long. of node = 24.4778482336 deg Inclination = 1.0275398983 deg Eccentricity = 0.2480957978 Semimajor axis = 3.1793229737 AU Perihelion dist = 2.3905463042 AU Mag: H = 12.89, G = 0.15 Epoch of elements : MJD 60381.16753534 TDT (2024 Mar 12.1675) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#502023Apr27,0.93,2024,3,12,4.020855,0.176999,0.462406,-8.512455,3.253236,0.001399,-0.000665,0.000001,-0.000001 -71.1588,9.6689,122.11,-3.14,False TYC 839-00199-1,10.60859521,9.7954993,11.92,11.59,11.41,0.0,0,,10.63010350,9.6688530,6.99,6.72,0,0,0 3746,Heyuan,18.58,15.055,2.9699,0,0,-1.705,9.63,,1.6,0 0,199.3571,2024,3,12,304.1269,24.4778,1.0275,0.24810,3.17932,2.39055,12.89,5.0,0.15 1.287,0.0157,0.0018,114,0.0020,Known errors,1.30,0,-1,-1 20240312_0199-1,60139.23 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 14, 05:28 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org