IOTA/IOTA-ES occultation update for (789) Lena / TYC 5653-00808-1 event on 2024 Sep 03, 13:17 UT Visible from Summary ------- On 2024 Sep 03 UT, the 21.5632194049035 km diameter asteroid (789) Lena will occult a 11.1 mag star in the constellation Serpens for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 4.59 mag to 15.71 mag (the magnitude of the asteroid) for at most 1.480 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 Sep 03, 13:09 - 2024 Sep 03, 13:24 * geocentric midpoint of event [JD]: 2460557.05347683 * magnitude of target star: 11.14 * magnitude drop [mag]: 4.59 * estimated maximum duration [s]: 1.480 * Moon: 0 % sunlit, 94° distance * Sun: 99° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 22 * 1 sigma uncertainty interval [path widths]: +/- 0.32 * 1 sigma uncertainty interval [seconds]: +/- 1.4 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.015, +/- 0.003) * 1 sigma uncertainty ellipse (major, minor, PA): (0.015", 0.002", 82°) * approx speed of asteroid's shadow [km/s]: 14.6826 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 5653-00808-1 by 789 Lena on 2024 Sep 3 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 - 4 0 0 22 58 55 13 10 0.2 1 104 69 22 52 40 23 5 10 22 48 39 23 9 13 .... - 3 0 0 22 45 7 13 10 0.3 2 104 69 22 38 52 22 51 22 22 34 50 22 55 24 -0.12 - 2 0 0 22 31 8 13 10 0.6 3 105 69 22 24 52 22 37 23 22 20 50 22 41 26 -0.17 - 1 0 0 22 16 58 13 10 1.0 4 105 68 22 10 43 22 23 14 22 6 40 22 27 17 -0.19 0 0 0 22 2 39 13 10 1.5 4 106 67 21 56 23 22 8 55 21 52 21 22 12 58 -0.20 1 0 0 21 48 10 13 10 2.1 5 106 67 21 41 54 21 54 26 21 37 52 21 58 29 -0.21 2 0 0 21 33 32 13 10 2.9 6 106 66 21 27 15 21 39 48 21 23 13 21 43 51 -0.22 3 0 0 21 18 44 13 10 3.8 7 107 66 21 12 27 21 25 1 21 8 25 21 29 4 -0.22 4 0 0 21 3 47 13 10 4.9 8 107 65 20 57 30 21 10 4 20 53 27 21 14 7 -0.23 5 0 0 20 48 41 13 10 6.0 9 107 64 20 42 25 20 54 59 20 38 21 20 59 2 -0.23 6 0 0 20 33 27 13 10 7.3 10 108 63 20 27 10 20 39 45 20 23 7 20 43 48 -0.23 7 0 0 20 18 5 13 10 8.7 11 108 63 20 11 48 20 24 22 20 7 44 20 28 26 -0.23 8 0 0 20 2 34 13 10 10.3 12 108 62 19 56 17 20 8 52 19 52 13 20 12 56 -0.23 9 0 0 19 46 56 13 10 12.0 13 109 61 19 40 39 19 53 14 19 36 35 19 57 18 -0.24 10 0 0 19 31 10 13 10 13.8 14 109 60 19 24 53 19 37 28 19 20 49 19 41 32 -0.24 11 0 0 19 15 18 13 10 15.8 15 110 60 19 9 0 19 21 36 19 4 56 19 25 40 -0.24 12 0 0 18 59 18 13 10 17.9 16 110 59 18 53 0 19 5 36 18 48 56 19 9 40 -0.24 13 0 0 18 43 12 13 10 20.1 17 110 58 18 36 53 18 49 30 18 32 49 18 53 34 -0.24 14 0 0 18 26 59 13 10 22.5 18 111 57 18 20 41 18 33 18 18 16 36 18 37 22 -0.24 15 0 0 18 10 40 13 10 25.0 19 111 56 18 4 22 18 16 59 18 0 18 18 21 4 -0.24 16 0 0 17 54 16 13 10 27.6 20 111 55 17 47 58 18 0 35 17 43 53 18 4 40 -0.24 17 0 0 17 37 47 13 10 30.3 21 112 55 17 31 28 17 44 6 17 27 24 17 48 10 -0.24 18 0 0 17 21 12 13 10 33.2 22 112 54 17 14 53 17 27 31 17 10 49 17 31 36 -0.24 19 0 0 17 4 33 13 10 36.3 23 112 53 16 58 14 17 10 52 16 54 10 17 14 57 -0.24 20 0 0 16 47 49 13 10 39.4 24 113 52 16 41 30 16 54 9 16 37 26 16 58 14 -0.24 21 0 0 16 31 2 13 10 42.7 25 113 51 16 24 43 16 37 21 16 20 38 16 41 26 -0.24 22 0 0 16 14 11 13 10 46.2 26 113 50 16 7 52 16 20 30 16 3 47 16 24 35 -0.24 23 0 0 15 57 17 13 10 49.7 27 114 49 15 50 57 16 3 36 15 46 53 16 7 41 -0.24 24 0 0 15 40 19 13 10 53.4 28 114 48 15 34 0 15 46 39 15 29 55 15 50 44 -0.24 25 0 0 15 23 20 13 10 57.3 29 114 47 15 17 0 15 29 39 15 12 56 15 33 44 -0.24 26 0 0 15 6 18 13 11 1.2 30 115 46 14 59 58 15 12 37 14 55 54 15 16 42 -0.25 27 0 0 14 49 14 13 11 5.3 31 115 45 14 42 55 14 55 34 14 38 50 14 59 39 -0.25 28 0 0 14 32 9 13 11 9.5 32 115 44 14 25 49 14 38 28 14 21 45 14 42 33 -0.25 29 0 0 14 15 3 13 11 13.9 33 116 43 14 8 43 14 21 22 14 4 38 14 25 27 -0.25 30 0 0 13 57 56 13 11 18.3 34 116 42 13 51 36 14 4 15 13 47 32 14 8 20 -0.25 31 0 0 13 40 49 13 11 22.9 35 117 41 13 34 29 13 47 8 13 30 25 13 51 13 -0.25 32 0 0 13 23 42 13 11 27.7 36 117 40 13 17 22 13 30 1 13 13 18 13 34 6 -0.25 33 0 0 13 6 35 13 11 32.5 37 117 39 13 0 16 13 12 55 12 56 11 13 17 0 -0.25 34 0 0 12 49 30 13 11 37.5 38 118 38 12 43 10 12 55 49 12 39 6 12 59 54 -0.25 35 0 0 12 32 25 13 11 42.5 39 118 37 12 26 6 12 38 45 12 22 2 12 42 50 -0.25 36 0 0 12 15 23 13 11 47.7 40 118 36 12 9 4 12 21 42 12 4 59 12 25 47 -0.25 37 0 0 11 58 22 13 11 53.1 41 119 35 11 52 3 12 4 42 11 47 59 12 8 46 -0.25 38 0 0 11 41 24 13 11 58.5 42 119 34 11 35 5 11 47 44 11 31 1 11 51 48 -0.25 39 0 0 11 24 29 13 12 4.0 43 120 33 11 18 10 11 30 48 11 14 6 11 34 53 -0.25 40 0 0 11 7 37 13 12 9.7 44 120 32 11 1 19 11 13 56 10 57 14 11 18 1 -0.25 41 0 0 10 50 49 13 12 15.5 45 121 31 10 44 31 10 57 8 10 40 26 11 1 13 -0.25 42 0 0 10 34 5 13 12 21.3 46 121 30 10 27 47 10 40 24 10 23 42 10 44 28 -0.25 43 0 0 10 17 25 13 12 27.3 47 122 29 10 11 7 10 23 44 10 7 3 10 27 48 -0.25 44 0 0 10 0 50 13 12 33.4 48 122 28 9 54 32 10 7 9 9 50 28 10 11 13 -0.25 45 0 0 9 44 21 13 12 39.6 49 123 27 9 38 3 9 50 39 9 33 59 9 54 43 -0.25 46 0 0 9 27 57 13 12 45.8 50 123 26 9 21 39 9 34 15 9 17 35 9 38 19 -0.25 47 0 0 9 11 39 13 12 52.2 51 124 25 9 5 21 9 17 57 9 1 17 9 22 1 -0.25 48 0 0 8 55 27 13 12 58.7 52 124 24 8 49 10 9 1 45 8 45 6 9 5 49 -0.25 49 0 0 8 39 22 13 13 5.2 53 125 23 8 33 5 8 45 40 8 29 1 8 49 44 -0.25 50 0 0 8 23 25 13 13 11.9 54 126 22 8 17 7 8 29 42 8 13 4 8 33 46 -0.25 51 0 0 8 7 34 13 13 18.6 55 126 21 8 1 17 8 13 52 7 57 14 8 17 55 -0.25 52 0 0 7 51 52 13 13 25.4 56 127 20 7 45 35 7 58 9 7 41 32 8 2 12 -0.25 53 0 0 7 36 18 13 13 32.3 57 128 19 7 30 1 7 42 35 7 25 58 7 46 38 -0.25 54 0 0 7 20 52 13 13 39.3 58 129 18 7 14 36 7 27 9 7 10 33 7 31 12 -0.25 55 0 0 7 5 36 13 13 46.3 59 130 17 6 59 20 7 11 52 6 55 17 7 15 55 -0.25 56 0 0 6 50 28 13 13 53.4 60 131 16 6 44 13 6 56 45 6 40 10 7 0 47 -0.25 57 0 0 6 35 31 13 14 0.6 61 131 15 6 29 15 6 41 47 6 25 13 6 45 49 -0.25 58 0 0 6 20 43 13 14 7.8 62 133 14 6 14 28 6 26 59 6 10 26 6 31 1 -0.25 59 0 0 6 6 6 13 14 15.1 63 134 13 5 59 51 6 12 21 5 55 49 6 16 23 -0.25 60 0 0 5 51 39 13 14 22.5 64 135 12 5 45 24 5 57 54 5 41 22 6 1 56 -0.26 61 0 0 5 37 23 13 14 29.9 65 136 11 5 31 9 5 43 38 5 27 7 5 47 40 -0.26 62 0 0 5 23 19 13 14 37.4 66 137 10 5 17 4 5 29 33 5 13 3 5 33 35 -0.26 63 0 0 5 9 26 13 14 44.9 66 139 9 5 3 12 5 15 40 4 59 10 5 19 42 -0.26 64 0 0 4 55 45 13 14 52.5 67 141 8 4 49 31 5 1 59 4 45 30 5 6 1 -0.26 65 0 0 4 42 16 13 15 0.1 68 142 7 4 36 3 4 48 30 4 32 2 4 52 31 -0.26 66 0 0 4 29 0 13 15 7.8 69 144 6 4 22 47 4 35 13 4 18 46 4 39 15 -0.26 67 0 0 4 15 56 13 15 15.5 70 146 4 4 9 43 4 22 10 4 5 43 4 26 11 -0.26 68 0 0 4 3 6 13 15 23.2 70 148 3 3 56 53 4 9 19 3 52 52 4 13 20 -0.26 69 0 0 3 50 29 13 15 31.0 71 150 2 3 44 16 3 56 41 3 40 16 4 0 42 -0.26 70 0 0 3 38 5 13 15 38.8 72 153 1 3 31 53 3 44 17 3 27 52 3 48 18 -0.26 71 0 0 3 25 55 13 15 46.6 72 156 0 3 19 43 3 32 7 3 15 43 3 36 8 -0.26 72 0 0 3 13 59 13 15 54.5 73 158 -1 3 7 47 3 20 11 3 3 48 3 24 11 -0.26 73 0 0 3 2 18 13 16 2.4 73 161 -2 2 56 6 3 8 29 2 52 7 3 12 29 -0.26 74 0 0 2 50 51 13 16 10.2 74 165 -3 2 44 39 2 57 2 2 40 40 3 1 2 -0.26 75 0 0 2 39 38 13 16 18.1 74 168 -4 2 33 28 2 45 50 2 29 28 2 49 49 -0.26 76 0 0 2 28 41 13 16 26.1 75 172 -5 2 22 31 2 34 52 2 18 31 2 38 52 -0.26 77 0 0 2 17 59 13 16 34.0 75 176 -6 2 11 49 2 24 10 2 7 50 2 28 9 -0.26 78 0 0 2 7 33 13 16 41.9 75 179 -7 2 1 22 2 13 43 1 57 24 2 17 42 -0.26 79 0 0 1 57 22 13 16 49.8 75 183 -8 1 51 12 2 3 32 1 47 13 2 7 31 -0.26 80 0 0 1 47 26 13 16 57.7 75 187 -9 1 41 17 1 53 36 1 37 18 1 57 35 -0.26 81 0 0 1 37 47 13 17 5.7 75 192 -10 1 31 38 1 43 57 1 27 39 1 47 55 -0.26 82 0 0 1 28 24 13 17 13.6 75 196 -11 1 22 15 1 34 33 1 18 16 1 38 32 -0.26 83 0 0 1 19 17 13 17 21.5 75 199 -12 1 13 8 1 25 26 1 9 10 1 29 24 -0.26 84 0 0 1 10 26 13 17 29.4 75 203 -13 1 4 18 1 16 35 1 0 20 1 20 34 -0.26 85 0 0 1 1 53 13 17 37.3 75 207 -14 0 55 44 1 8 1 0 51 47 1 11 59 -0.26 86 0 0 0 53 36 13 17 45.1 74 211 -15 0 47 27 0 59 44 0 43 30 1 3 42 -0.26 87 0 0 0 45 36 13 17 53.0 74 214 -16 0 39 28 0 51 44 0 35 30 0 55 41 -0.26 88 0 0 0 37 53 13 18 0.8 73 217 -17 0 31 45 0 44 1 0 27 47 0 47 58 -0.26 89 0 0 0 30 27 13 18 8.6 73 220 -19 0 24 19 0 36 34 0 20 22 0 40 32 -0.26 90 0 0 0 23 18 13 18 16.3 72 223 -20 0 17 11 0 29 26 0 13 14 0 33 23 -0.26 91 0 0 0 16 27 13 18 24.1 72 225 -21 0 10 20 0 22 34 0 6 23 0 26 31 -0.26 92 0 0 0 9 53 13 18 31.8 71 227 -22 0 3 46 0 16 0 - 0 0 10 0 19 58 -0.26 93 0 0 0 3 37 13 18 39.4 70 230 -23 - 0 2 30 0 9 44 - 0 6 26 0 13 41 -0.26 94 0 0 - 0 2 21 13 18 47.0 69 232 -24 - 0 8 28 0 3 46 - 0 12 24 0 7 43 -0.26 95 0 0 - 0 8 1 13 18 54.6 69 233 -25 - 0 14 8 - 0 1 55 - 0 18 4 0 2 2 -0.26 96 0 0 - 0 13 24 13 19 2.2 68 235 -26 - 0 19 30 - 0 7 18 - 0 23 27 - 0 3 21 -0.26 97 0 0 - 0 18 29 13 19 9.6 67 237 -27 - 0 24 35 - 0 12 22 - 0 28 31 - 0 8 26 -0.26 98 0 0 - 0 23 15 13 19 17.1 66 238 -28 - 0 29 21 - 0 17 9 - 0 33 17 - 0 13 13 -0.26 99 0 0 - 0 27 44 13 19 24.5 65 239 -29 - 0 33 50 - 0 21 38 - 0 37 46 - 0 17 41 -0.26 100 0 0 - 0 31 54 13 19 31.8 65 241 -30 - 0 38 0 - 0 25 48 - 0 41 56 - 0 21 52 -0.26 101 0 0 - 0 35 46 13 19 39.1 64 242 -31 - 0 41 52 - 0 29 40 - 0 45 48 - 0 25 44 -0.26 102 0 0 - 0 39 20 13 19 46.3 63 243 -32 - 0 45 25 - 0 33 14 - 0 49 21 - 0 29 18 -0.26 103 0 0 - 0 42 35 13 19 53.4 62 244 -33 - 0 48 41 - 0 36 30 - 0 52 37 - 0 32 34 -0.26 104 0 0 - 0 45 33 13 20 0.5 61 245 -34 - 0 51 38 - 0 39 27 - 0 55 34 - 0 35 31 -0.26 105 0 0 - 0 48 11 13 20 7.6 60 245 -35 - 0 54 17 - 0 42 6 - 0 58 12 - 0 38 10 -0.26 106 0 0 - 0 50 32 13 20 14.5 59 246 -36 - 0 56 37 - 0 44 26 - 1 0 32 - 0 40 30 -0.26 107 0 0 - 0 52 34 13 20 21.4 58 247 -37 - 0 58 39 - 0 46 28 - 1 2 34 - 0 42 32 -0.26 108 0 0 - 0 54 17 13 20 28.2 57 248 -38 - 1 0 22 - 0 48 12 - 1 4 18 - 0 44 16 -0.26 109 0 0 - 0 55 42 13 20 35.0 56 248 -39 - 1 1 47 - 0 49 37 - 1 5 43 - 0 45 41 -0.26 110 0 0 - 0 56 49 13 20 41.6 55 249 -40 - 1 2 54 - 0 50 44 - 1 6 49 - 0 46 48 -0.26 111 0 0 - 0 57 37 13 20 48.2 54 249 -41 - 1 3 42 - 0 51 32 - 1 7 37 - 0 47 36 -0.26 112 0 0 - 0 58 7 13 20 54.7 53 250 -42 - 1 4 11 - 0 52 1 - 1 8 7 - 0 48 6 -0.26 113 0 0 - 0 58 18 13 21 1.1 53 250 -43 - 1 4 23 - 0 52 13 - 1 8 18 - 0 48 17 -0.26 114 0 0 - 0 58 11 13 21 7.5 52 251 -44 - 1 4 16 - 0 52 6 - 1 8 11 - 0 48 10 -0.26 115 0 0 - 0 57 45 13 21 13.7 51 251 -45 - 1 3 50 - 0 51 40 - 1 7 45 - 0 47 44 -0.26 116 0 0 - 0 57 1 13 21 19.9 50 251 -46 - 1 3 6 - 0 50 56 - 1 7 1 - 0 47 0 -0.26 117 0 0 - 0 55 59 13 21 26.0 49 252 -47 - 1 2 4 - 0 49 54 - 1 5 59 - 0 45 58 -0.26 118 0 0 - 0 54 38 13 21 31.9 48 252 -48 - 1 0 43 - 0 48 33 - 1 4 39 - 0 44 37 -0.26 119 0 0 - 0 52 59 13 21 37.8 47 252 -49 - 0 59 4 - 0 46 54 - 1 3 0 - 0 42 58 -0.26 120 0 0 - 0 51 2 13 21 43.6 46 253 -50 - 0 57 7 - 0 44 57 - 1 1 3 - 0 41 1 -0.26 121 0 0 - 0 48 47 13 21 49.3 45 253 -51 - 0 54 52 - 0 42 42 - 0 58 48 - 0 38 46 -0.26 122 0 0 - 0 46 14 13 21 54.9 44 253 -52 - 0 52 19 - 0 40 8 - 0 56 14 - 0 36 13 -0.26 123 0 0 - 0 43 22 13 22 0.4 43 253 -53 - 0 49 28 - 0 37 17 - 0 53 23 - 0 33 21 -0.26 124 0 0 - 0 40 13 13 22 5.8 42 254 -54 - 0 46 18 - 0 34 7 - 0 50 14 - 0 30 11 -0.26 125 0 0 - 0 36 45 13 22 11.1 41 254 -55 - 0 42 51 - 0 30 40 - 0 46 47 - 0 26 44 -0.26 126 0 0 - 0 33 0 13 22 16.2 40 254 -56 - 0 39 6 - 0 26 55 - 0 43 2 - 0 22 59 -0.26 127 0 0 - 0 28 58 13 22 21.3 39 254 -57 - 0 35 3 - 0 22 52 - 0 38 59 - 0 18 56 -0.26 128 0 0 - 0 24 37 13 22 26.3 38 254 -58 - 0 30 43 - 0 18 31 - 0 34 39 - 0 14 35 -0.26 129 0 0 - 0 19 59 13 22 31.1 37 254 -59 - 0 26 5 - 0 13 53 - 0 30 1 - 0 9 57 -0.26 130 0 0 - 0 15 3 13 22 35.8 36 255 -60 - 0 21 9 - 0 8 57 - 0 25 5 - 0 5 1 -0.26 131 0 0 - 0 9 50 13 22 40.5 35 255 -61 - 0 15 56 - 0 3 44 - 0 19 53 0 0 12 -0.26 132 0 0 - 0 4 20 13 22 45.0 34 255 -62 - 0 10 26 0 1 46 - 0 14 23 0 5 43 -0.26 133 0 0 0 1 28 13 22 49.3 33 255 -63 - 0 4 39 0 7 34 - 0 8 35 0 11 31 -0.26 134 0 0 0 7 32 13 22 53.6 32 255 -64 0 1 25 0 13 39 - 0 2 31 0 17 36 -0.26 135 0 0 0 13 53 13 22 57.8 31 255 -65 0 7 47 0 20 0 0 3 50 0 23 57 -0.26 136 0 0 0 20 32 13 23 1.8 30 255 -66 0 14 25 0 26 39 0 10 28 0 30 36 -0.26 137 0 0 0 27 27 13 23 5.7 29 255 -67 0 21 20 0 33 34 0 17 23 0 37 31 -0.26 138 0 0 0 34 38 13 23 9.5 28 255 -68 0 28 31 0 40 46 0 24 34 0 44 43 -0.26 139 0 0 0 42 6 13 23 13.1 27 255 -69 0 35 59 0 48 14 0 32 1 0 52 11 -0.26 140 0 0 0 49 50 13 23 16.6 26 256 -69 0 43 42 0 55 58 0 39 45 0 59 55 -0.26 141 0 0 0 57 50 13 23 20.0 25 256 -70 0 51 42 1 3 58 0 47 45 1 7 56 -0.26 142 0 0 1 6 6 13 23 23.3 24 256 -71 0 59 58 1 12 15 0 56 1 1 16 12 -0.26 143 0 0 1 14 38 13 23 26.4 23 256 -72 1 8 30 1 20 47 1 4 32 1 24 45 -0.26 144 0 0 1 23 26 13 23 29.4 22 256 -73 1 17 17 1 29 34 1 13 20 1 33 32 -0.26 145 0 0 1 32 29 13 23 32.3 21 256 -74 1 26 20 1 38 38 1 22 22 1 42 36 -0.26 146 0 0 1 41 47 13 23 35.1 20 256 -74 1 35 38 1 47 56 1 31 40 1 51 54 -0.26 147 0 0 1 51 20 13 23 37.7 18 256 -75 1 45 11 1 57 29 1 41 13 2 1 28 -0.26 148 0 0 2 1 8 13 23 40.1 17 256 -76 1 54 59 2 7 18 1 51 1 2 11 16 -0.26 149 0 0 2 11 11 13 23 42.5 16 256 -76 2 5 2 2 17 21 2 1 3 2 21 20 -0.26 150 0 0 2 21 28 13 23 44.7 15 256 -77 2 15 19 2 27 38 2 11 20 2 31 37 -0.26 151 0 0 2 32 0 13 23 46.7 14 256 -77 2 25 50 2 38 10 2 21 51 2 42 9 -0.26 152 0 0 2 42 46 13 23 48.7 13 256 -78 2 36 35 2 48 56 2 32 37 2 52 55 -0.26 153 0 0 2 53 45 13 23 50.4 12 256 -78 2 47 35 2 59 56 2 43 36 3 3 55 -0.26 154 0 0 3 4 58 13 23 52.1 11 256 -79 2 58 48 3 11 9 2 54 48 3 15 9 -0.26 155 0 0 3 16 25 13 23 53.6 10 257 -79 3 10 14 3 22 36 3 6 15 3 26 36 -0.26 156 0 0 3 28 5 13 23 54.9 9 257 -79 3 21 53 3 34 16 3 17 54 3 38 16 -0.26 157 0 0 3 39 57 13 23 56.2 8 257 -79 3 33 46 3 46 9 3 29 46 3 50 9 -0.26 158 0 0 3 52 3 13 23 57.3 7 257 -79 3 45 51 3 58 15 3 41 51 4 2 15 -0.26 159 0 0 4 4 20 13 23 58.2 6 257 -79 3 58 8 4 10 33 3 54 9 4 14 33 -0.26 160 0 0 4 16 50 13 23 59.0 5 257 -78 4 10 38 4 23 3 4 6 38 4 27 3 -0.26 161 0 0 4 29 32 13 23 59.6 4 257 -78 4 23 20 4 35 45 4 19 20 4 39 46 -0.26 162 0 0 4 42 26 13 24 0.2 3 257 -78 4 36 13 4 48 39 4 32 13 4 52 40 -0.27 163 0 0 4 55 31 13 24 0.5 2 257 -77 4 49 18 5 1 44 4 45 18 5 5 45 -0.27 164 0 0 5 8 47 13 24 0.8 1 257 -77 5 2 34 5 15 1 4 58 33 5 19 2 -0.29 165 0 0 5 22 14 13 24 0.8 0 257 -76 5 16 1 5 28 28 5 12 0 5 32 29 -0.67 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.5 Data for the target star ------------------------ * name: TYC 5653-00808-1 * constellation : Serpens * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 17 20 33.8240 DE: -12 37 24.014 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 17 20 33.8239 DE: -12 37 24.014 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 11.1 * B mag [mag]: 12.0 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (789) Lena asteroid class: approx. diameter [km]: 22 approx. diameter ["]: 0.016 distance from Earth [AU]: 1.91350 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#54 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): 0.015", 0.002", 81.862° remarks: * orbital elements for (789)Lena : Mean anomaly = 7.8866056734 deg Arg. of pericenter = 43.4667974308 deg Long. of node = 232.5617843807 deg Inclination = 10.7760818741 deg Eccentricity = 0.1469786022 Semimajor axis = 2.6863426039 AU Perihelion dist = 2.2915077230 AU Mag: H = 11.32, G = 0.15 Epoch of elements : MJD 60556.55347638 TDT (2024 Sep 03.5535) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#542023Apr24,1.48,2024,9,3,13.283444,0.039507,0.248054,8.183957,-1.304346,0.005361,-0.000516,0.000000,0.000000 78.0691,-12.6481,-19.45,7.24,False TYC 5653-00808-1,17.34272891,-12.6233374,11.97,11.14,10.69,0.1,0,,17.36585289,-12.6480806,4.59,4.58,0,0,0 789,Lena,15.71,21.702,1.9135,0,0,2.570,-6.00,,1.2,0 0,7.7627,2024,9,3,43.4668,232.5618,10.7761,0.14698,2.68634,2.29151,11.32,5.0,0.15 1.323,0.0150,0.0025,82,0.0050,Known errors,1.21,0,-1,-1 20240903_0808-1,60140.54 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 12:55 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org