IOTA/IOTA-ES occultation update for (723) Hammonia / UCAC4 486-052399 event on 2022 Feb 02, 11:24 UT Visible from W USA, Mexico Summary ------- On 2022 Feb 02 UT, the 27.4 km diameter asteroid (723) Hammonia will occult a 13.0 mag star in the constellation Leo for observers along a path across W USA, Mexico. In the case of an occultation, the combined light of the asteroid and the star will drop by 1.82 mag to 14.61 mag (the magnitude of the asteroid) for at most 2.570 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: 2022 Feb 02, 11:16 - 2022 Feb 02, 11:32 * geocentric midpoint of event [JD]: 2459612.97553750 * magnitude of target star: 13.01 * magnitude drop [mag]: 1.82 * estimated maximum duration [s]: 2.570 * Moon: 2 % sunlit, 170° distance * Sun: 155° distance * rough path description: W USA, Mexico The occultation path -------------------- * approximate projected width [km]: 34 * 1 sigma uncertainty interval [path widths]: +/- 0.24 * 1 sigma uncertainty interval [seconds]: +/- 2.9 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.020, +/- 0.006) * 1 sigma uncertainty ellipse (major, minor, PA): (0.021", 0.001", 106°) * approx speed of asteroid's shadow [km/s]: 10.6863 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 486-052399 by 723 Hammonia on 2022 Feb 2 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 110 0 0 63 34 51 11 32 46.7 0 75 -19 63 44 19 63 25 24 63 48 55 63 20 50 .... 111 0 0 63 42 1 11 32 46.7 1 76 -20 63 51 28 63 32 35 63 56 2 63 28 2 -0.63 112 0 0 63 48 52 11 32 46.5 1 77 -20 63 58 17 63 39 27 64 2 51 63 34 55 -0.66 113 0 0 63 55 25 11 32 46.4 2 78 -21 64 4 49 63 46 2 64 9 22 63 41 30 -0.68 114 0 0 64 1 39 11 32 46.2 2 79 -21 64 11 2 63 52 18 64 15 35 63 47 46 -0.69 115 0 0 64 7 36 11 32 45.9 3 80 -21 64 16 58 63 58 16 64 21 30 63 53 45 -0.69 116 0 0 64 13 16 11 32 45.6 3 80 -22 64 22 36 64 3 56 64 27 8 63 59 26 -0.70 117 0 0 64 18 37 11 32 45.3 4 81 -22 64 27 57 64 9 19 64 32 28 64 4 49 -0.70 118 0 0 64 23 42 11 32 44.9 4 82 -23 64 33 0 64 14 24 64 37 31 64 9 55 -0.70 119 0 0 64 28 29 11 32 44.5 4 83 -23 64 37 46 64 19 12 64 42 16 64 14 44 -0.70 120 0 0 64 32 59 11 32 44.0 5 84 -23 64 42 15 64 23 43 64 46 45 64 19 15 -0.71 121 0 0 64 37 12 11 32 43.5 5 85 -24 64 46 28 64 27 57 64 50 57 64 23 30 -0.71 122 0 0 64 41 8 11 32 43.0 6 86 -24 64 50 23 64 31 55 64 54 52 64 27 27 -0.71 123 0 0 64 44 48 11 32 42.4 6 87 -25 64 54 3 64 35 35 64 58 31 64 31 8 -0.71 124 0 0 64 48 12 11 32 41.8 7 88 -25 64 57 25 64 38 59 65 1 53 64 34 33 -0.71 125 0 0 64 51 19 11 32 41.1 7 89 -26 65 0 31 64 42 7 65 4 59 64 37 40 -0.71 126 0 0 64 54 9 11 32 40.4 7 89 -26 65 3 22 64 44 58 65 7 49 64 40 32 -0.71 127 0 0 64 56 44 11 32 39.7 8 90 -26 65 5 56 64 47 33 65 10 23 64 43 7 -0.71 128 0 0 64 59 2 11 32 38.9 8 91 -27 65 8 13 64 49 52 65 12 40 64 45 26 -0.71 129 0 0 65 1 5 11 32 38.1 9 92 -27 65 10 15 64 51 55 65 14 42 64 47 29 -0.71 130 0 0 65 2 51 11 32 37.3 9 93 -27 65 12 1 64 53 41 65 16 28 64 49 16 -0.71 131 0 0 65 4 21 11 32 36.4 10 94 -28 65 13 32 64 55 12 65 17 58 64 50 47 -0.72 132 0 0 65 5 36 11 32 35.4 10 95 -28 65 14 46 64 56 27 65 19 13 64 52 2 -0.72 133 0 0 65 6 35 11 32 34.5 10 96 -29 65 15 45 64 57 26 65 20 11 64 53 1 -0.72 134 0 0 65 7 18 11 32 33.5 11 97 -29 65 16 28 64 58 9 65 20 54 64 53 44 -0.72 135 0 0 65 7 45 11 32 32.4 11 98 -29 65 16 55 64 58 37 65 21 21 64 54 12 -0.72 136 0 0 65 7 57 11 32 31.4 12 99 -30 65 17 7 64 58 48 65 21 33 64 54 24 -0.72 137 0 0 65 7 53 11 32 30.2 12 99 -30 65 17 3 64 58 44 65 21 29 64 54 19 -0.72 138 0 0 65 7 34 11 32 29.1 12 100 -30 65 16 44 64 58 25 65 21 10 64 54 0 -0.72 139 0 0 65 6 58 11 32 27.9 13 101 -31 65 16 8 64 57 49 65 20 35 64 53 24 -0.72 140 0 0 65 6 7 11 32 26.7 13 102 -31 65 15 18 64 56 58 65 19 44 64 52 32 -0.72 141 0 0 65 5 0 11 32 25.4 14 103 -32 65 14 11 64 55 51 65 18 38 64 51 25 -0.72 142 0 0 65 3 38 11 32 24.1 14 104 -32 65 12 49 64 54 28 65 17 16 64 50 2 -0.72 143 0 0 65 2 0 11 32 22.7 15 105 -32 65 11 11 64 52 49 65 15 38 64 48 23 -0.72 144 0 0 65 0 5 11 32 21.4 15 106 -33 65 9 17 64 50 55 65 13 45 64 46 28 -0.72 145 0 0 64 57 56 11 32 19.9 15 107 -33 65 7 8 64 48 44 65 11 36 64 44 18 -0.72 146 0 0 64 55 30 11 32 18.5 16 108 -33 65 4 43 64 46 18 65 9 11 64 41 51 -0.72 147 0 0 64 52 48 11 32 16.9 16 109 -34 65 2 2 64 43 35 65 6 30 64 39 8 -0.72 148 0 0 64 49 50 11 32 15.4 17 110 -34 64 59 4 64 40 36 65 3 33 64 36 9 -0.72 149 0 0 64 46 36 11 32 13.8 17 110 -35 64 55 51 64 37 21 65 0 20 64 32 54 -0.72 150 0 0 64 43 5 11 32 12.1 17 111 -35 64 52 21 64 33 50 64 56 51 64 29 22 -0.72 151 0 0 64 39 19 11 32 10.5 18 112 -35 64 48 36 64 30 3 64 53 5 64 25 34 -0.72 152 0 0 64 35 16 11 32 8.7 18 113 -36 64 44 34 64 25 59 64 49 4 64 21 30 -0.72 153 0 0 64 30 56 11 32 7.0 19 114 -36 64 40 15 64 21 38 64 44 46 64 17 9 -0.72 154 0 0 64 26 20 11 32 5.1 19 115 -36 64 35 40 64 17 1 64 40 11 64 12 31 -0.72 155 0 0 64 21 27 11 32 3.3 20 116 -37 64 30 48 64 12 7 64 35 19 64 7 36 -0.72 156 0 0 64 16 16 11 32 1.3 20 117 -37 64 25 39 64 6 55 64 30 11 64 2 24 -0.72 157 0 0 64 10 49 11 31 59.4 20 118 -37 64 20 13 64 1 27 64 24 46 63 56 56 -0.72 158 0 0 64 5 5 11 31 57.3 21 119 -38 64 14 30 63 55 41 64 19 3 63 51 9 -0.73 159 0 0 63 59 3 11 31 55.3 21 120 -38 64 8 29 63 49 38 64 13 4 63 45 6 -0.73 160 0 0 63 52 44 11 31 53.2 22 121 -38 64 2 12 63 43 18 64 6 46 63 38 44 -0.73 161 0 0 63 46 7 11 31 51.0 22 122 -39 63 55 36 63 36 39 64 0 12 63 32 5 -0.73 162 0 0 63 39 12 11 31 48.7 23 123 -39 63 48 43 63 29 43 63 53 19 63 25 8 -0.73 163 0 0 63 31 59 11 31 46.5 23 124 -40 63 41 31 63 22 29 63 46 8 63 17 53 -0.73 164 0 0 63 24 28 11 31 44.1 23 124 -40 63 34 2 63 14 56 63 38 40 63 10 20 -0.73 165 0 0 63 16 39 11 31 41.7 24 125 -40 63 26 14 63 7 5 63 30 52 63 2 28 -0.73 166 0 0 63 8 31 11 31 39.2 24 126 -41 63 18 7 62 58 55 63 22 47 62 54 17 -0.73 167 0 0 63 0 3 11 31 36.7 25 127 -41 63 9 42 62 50 26 63 14 22 62 45 47 -0.73 168 0 0 62 51 17 11 31 34.1 25 128 -41 63 0 57 62 41 38 63 5 38 62 36 59 -0.73 169 0 0 62 42 12 11 31 31.5 26 129 -42 62 51 54 62 32 31 62 56 36 62 27 51 -0.73 170 0 0 62 32 47 11 31 28.8 26 130 -42 62 42 31 62 23 4 62 47 13 62 18 23 -0.73 171 0 0 62 23 2 11 31 26.0 27 131 -42 62 32 48 62 13 17 62 37 31 62 8 35 -0.73 172 0 0 62 12 57 11 31 23.1 27 132 -43 62 22 45 62 3 11 62 27 30 61 58 28 -0.73 173 0 0 62 2 32 11 31 20.2 27 133 -43 62 12 22 61 52 44 62 17 8 61 48 0 -0.73 174 0 0 61 51 47 11 31 17.2 28 134 -43 62 1 38 61 41 56 62 6 25 61 37 11 -0.73 175 0 0 61 40 41 11 31 14.2 28 135 -44 61 50 34 61 30 48 61 55 22 61 26 2 -0.73 176 0 0 61 29 14 11 31 11.0 29 136 -44 61 39 9 61 19 19 61 43 58 61 14 32 -0.73 177 0 0 61 17 25 11 31 7.8 29 137 -44 61 27 23 61 7 29 61 32 13 61 2 41 -0.73 178 0 0 61 5 15 11 31 4.5 30 138 -45 61 15 15 60 55 17 61 20 6 60 50 28 -0.73 179 0 0 60 52 44 11 31 1.1 30 139 -45 61 2 46 60 42 43 61 7 38 60 37 53 -0.73 -180 0 0 60 39 50 11 30 57.7 31 140 -45 60 49 55 60 29 47 60 54 48 60 24 56 -0.73 -179 0 0 60 26 35 11 30 54.1 31 141 -46 60 36 41 60 16 30 60 41 35 60 11 37 -0.73 -178 0 0 60 12 57 11 30 50.5 32 142 -46 60 23 5 60 2 49 60 28 0 59 57 56 -0.73 -177 0 0 59 58 56 11 30 46.8 32 143 -46 60 9 7 59 48 46 60 14 3 59 43 52 -0.73 -176 0 0 59 44 32 11 30 42.9 33 144 -47 59 54 45 59 34 20 59 59 42 59 29 24 -0.73 -175 0 0 59 29 45 11 30 39.0 33 145 -47 59 40 0 59 19 30 59 44 59 59 14 34 -0.73 -174 0 0 59 14 34 11 30 35.0 34 146 -47 59 24 52 59 4 17 59 29 51 58 59 20 -0.73 -173 0 0 58 59 0 11 30 31.0 34 147 -48 59 9 20 58 48 41 59 14 20 58 43 42 -0.73 -172 0 0 58 43 1 11 30 26.8 35 148 -48 58 53 24 58 32 40 58 58 25 58 27 40 -0.73 -171 0 0 58 26 39 11 30 22.5 35 149 -48 58 37 4 58 16 15 58 42 6 58 11 14 -0.73 -170 0 0 58 9 52 11 30 18.1 36 150 -49 58 20 19 57 59 26 58 25 23 57 54 24 -0.73 -169 0 0 57 52 40 11 30 13.6 36 151 -49 58 3 10 57 42 12 58 8 15 57 37 9 -0.73 -168 0 0 57 35 4 11 30 9.0 37 152 -49 57 45 36 57 24 33 57 50 42 57 19 29 -0.73 -167 0 0 57 17 2 11 30 4.3 37 153 -49 57 27 36 57 6 30 57 32 44 57 1 24 -0.73 -166 0 0 56 58 36 11 29 59.4 38 155 -50 57 9 12 56 48 1 57 14 20 56 42 54 -0.73 -165 0 0 56 39 43 11 29 54.5 38 156 -50 56 50 22 56 29 6 56 55 32 56 23 59 -0.73 -164 0 0 56 20 26 11 29 49.4 39 157 -50 56 31 7 56 9 47 56 36 17 56 4 38 -0.73 -163 0 0 56 0 43 11 29 44.3 39 158 -50 56 11 26 55 50 1 56 16 37 55 44 52 -0.74 -162 0 0 55 40 34 11 29 39.0 40 159 -51 55 51 19 55 29 50 55 56 32 55 24 39 -0.74 -161 0 0 55 19 59 11 29 33.6 40 160 -51 55 30 46 55 9 13 55 36 0 55 4 1 -0.74 -160 0 0 54 58 58 11 29 28.0 41 161 -51 55 9 47 54 48 10 55 15 2 54 42 57 -0.74 -159 0 0 54 37 31 11 29 22.4 41 162 -51 54 48 22 54 26 41 54 53 38 54 21 27 -0.74 -158 0 0 54 15 37 11 29 16.6 42 164 -52 54 26 31 54 4 46 54 31 48 53 59 31 -0.74 -157 0 0 53 53 18 11 29 10.7 42 165 -52 54 4 14 53 42 24 54 9 32 53 37 9 -0.74 -156 0 0 53 30 33 11 29 4.6 43 166 -52 53 41 31 53 19 37 53 46 49 53 14 21 -0.74 -155 0 0 53 7 22 11 28 58.5 43 167 -52 53 18 21 52 56 24 53 23 41 52 51 7 -0.74 -154 0 0 52 43 44 11 28 52.2 44 169 -52 52 54 45 52 32 45 53 0 6 52 27 26 -0.74 -153 0 0 52 19 41 11 28 45.8 44 170 -52 52 30 44 52 8 40 52 36 5 52 3 21 -0.74 -152 0 0 51 55 12 11 28 39.2 45 171 -52 52 6 16 51 44 9 52 11 39 51 38 49 -0.74 -151 0 0 51 30 17 11 28 32.5 45 172 -53 51 41 23 51 19 12 51 46 46 51 13 52 -0.74 -150 0 0 51 4 57 11 28 25.7 46 174 -53 51 16 5 50 53 51 51 21 28 50 48 29 -0.74 -149 0 0 50 39 11 11 28 18.7 46 175 -53 50 50 20 50 28 4 50 55 45 50 22 41 -0.74 -148 0 0 50 13 0 11 28 11.6 47 176 -53 50 24 11 50 1 52 50 29 36 49 56 29 -0.74 -147 0 0 49 46 25 11 28 4.4 47 178 -53 49 57 37 49 35 15 50 3 3 49 29 52 -0.74 -146 0 0 49 19 25 11 27 57.0 48 179 -53 49 30 39 49 8 14 49 36 5 49 2 50 -0.74 -145 0 0 48 52 2 11 27 49.5 48 181 -53 49 3 16 48 40 49 49 8 43 48 35 25 -0.74 -144 0 0 48 24 14 11 27 41.9 49 182 -53 48 35 30 48 13 1 48 40 57 48 7 36 -0.74 -143 0 0 47 56 4 11 27 34.1 49 184 -52 48 7 20 47 44 49 48 12 48 47 39 24 -0.74 -142 0 0 47 27 30 11 27 26.2 50 185 -52 47 38 47 47 16 15 47 44 16 47 10 49 -0.74 -141 0 0 46 58 34 11 27 18.2 50 187 -52 47 9 52 46 47 18 47 15 21 46 41 52 -0.74 -140 0 0 46 29 17 11 27 10.0 50 188 -52 46 40 35 46 18 0 46 46 4 46 12 33 -0.74 -139 0 0 45 59 38 11 27 1.8 51 190 -52 46 10 57 45 48 21 46 16 27 45 42 54 -0.74 -138 0 0 45 29 39 11 26 53.4 51 192 -52 45 40 58 45 18 21 45 46 28 45 12 54 -0.74 -137 0 0 44 59 19 11 26 44.8 51 193 -51 45 10 40 44 48 1 45 16 9 44 42 34 -0.74 -136 0 0 44 28 41 11 26 36.2 52 195 -51 44 40 1 44 17 23 44 45 31 44 11 55 -0.73 -135 0 0 43 57 44 11 26 27.4 52 197 -51 44 9 5 43 46 25 44 14 34 43 40 58 -0.73 -134 0 0 43 26 29 11 26 18.6 52 198 -51 43 37 50 43 15 11 43 43 20 43 9 43 -0.73 -133 0 0 42 54 57 11 26 9.6 53 200 -50 43 6 18 42 43 39 43 11 48 42 38 12 -0.73 -132 0 0 42 23 9 11 26 0.5 53 202 -50 42 34 30 42 11 51 42 40 0 42 6 24 -0.73 -131 0 0 41 51 6 11 25 51.3 53 204 -50 42 2 26 41 39 48 42 7 56 41 34 21 -0.73 -130 0 0 41 18 48 11 25 42.1 53 205 -49 41 30 8 41 7 31 41 35 38 41 2 4 -0.73 -129 0 0 40 46 17 11 25 32.7 53 207 -49 40 57 36 40 35 0 41 3 5 40 29 33 -0.73 -128 0 0 40 13 33 11 25 23.2 54 209 -48 40 24 52 40 2 16 40 30 21 39 56 50 -0.73 -127 0 0 39 40 37 11 25 13.7 54 211 -48 39 51 55 39 29 21 39 57 24 39 23 55 -0.73 -126 0 0 39 7 31 11 25 4.1 54 213 -47 39 18 48 38 56 15 39 24 16 38 50 49 -0.73 -125 0 0 38 34 14 11 24 54.4 54 215 -47 38 45 31 38 23 0 38 50 59 38 17 34 -0.73 -124 0 0 38 0 49 11 24 44.6 54 217 -46 38 12 5 37 49 36 38 17 32 37 44 11 -0.73 -123 0 0 37 27 16 11 24 34.8 54 218 -46 37 38 31 37 16 4 37 43 58 37 10 39 -0.73 -122 0 0 36 53 37 11 24 24.9 54 220 -45 37 4 50 36 42 25 37 10 17 36 37 1 -0.73 -121 0 0 36 19 52 11 24 15.0 54 222 -44 36 31 4 36 8 42 36 36 30 36 3 18 -0.73 -120 0 0 35 46 2 11 24 5.1 54 224 -44 35 57 13 35 34 53 36 2 38 35 29 30 -0.73 -119 0 0 35 12 9 11 23 55.1 53 226 -43 35 23 19 35 1 1 35 28 43 34 55 39 -0.73 -118 0 0 34 38 13 11 23 45.1 53 228 -42 34 49 22 34 27 7 34 54 46 34 21 46 -0.73 -117 0 0 34 4 17 11 23 35.0 53 230 -42 34 15 23 33 53 12 34 20 46 33 47 51 -0.73 -116 0 0 33 30 19 11 23 25.0 53 231 -41 33 41 25 33 19 16 33 46 47 33 13 56 -0.73 -115 0 0 32 56 23 11 23 14.9 52 233 -40 33 7 26 32 45 21 33 12 48 32 40 2 -0.73 -114 0 0 32 22 28 11 23 4.9 52 235 -40 32 33 30 32 11 28 32 38 51 32 6 10 -0.73 -113 0 0 31 48 37 11 22 54.9 52 236 -39 31 59 37 31 37 38 32 4 57 31 32 21 -0.73 -112 0 0 31 14 49 11 22 44.8 51 238 -38 31 25 48 31 3 53 31 31 7 30 58 36 -0.73 -111 0 0 30 41 7 11 22 34.8 51 240 -37 30 52 3 30 30 12 30 57 22 30 24 56 -0.73 -110 0 0 30 7 31 11 22 24.8 51 241 -36 30 18 25 29 56 38 30 23 42 29 51 23 -0.73 -109 0 0 29 34 2 11 22 14.9 50 243 -36 29 44 54 29 23 11 29 50 11 29 17 56 -0.73 -108 0 0 29 0 41 11 22 5.0 50 244 -35 29 11 32 28 49 52 29 16 47 28 44 39 -0.73 -107 0 0 28 27 29 11 21 55.2 49 246 -34 28 38 18 28 16 42 28 43 32 28 11 30 -0.73 -106 0 0 27 54 28 11 21 45.4 48 247 -33 28 5 15 27 43 43 28 10 28 27 38 32 -0.72 -105 0 0 27 21 38 11 21 35.7 48 249 -32 27 32 23 27 10 55 27 37 35 27 5 45 -0.72 -104 0 0 26 49 0 11 21 26.0 47 250 -31 26 59 43 26 38 19 27 4 54 26 33 10 -0.72 -103 0 0 26 16 36 11 21 16.5 47 251 -30 26 27 16 26 5 57 26 32 26 26 0 49 -0.72 -102 0 0 25 44 25 11 21 7.0 46 252 -29 25 55 4 25 33 49 26 0 13 25 28 42 -0.72 -101 0 0 25 12 30 11 20 57.6 45 254 -28 25 23 6 25 1 56 25 28 14 24 56 49 -0.72 -100 0 0 24 40 51 11 20 48.3 45 255 -28 24 51 25 24 30 18 24 56 32 24 25 13 -0.72 - 99 0 0 24 9 28 11 20 39.1 44 256 -27 24 20 0 23 58 58 24 25 6 23 53 54 -0.72 - 98 0 0 23 38 24 11 20 30.0 43 257 -26 23 48 53 23 27 56 23 53 58 23 22 53 -0.72 - 97 0 0 23 7 37 11 20 21.1 42 258 -25 23 18 5 22 57 12 23 23 9 22 52 10 -0.72 - 96 0 0 22 37 11 11 20 12.2 42 259 -24 22 47 36 22 26 47 22 52 39 22 21 46 -0.72 - 95 0 0 22 7 4 11 20 3.5 41 260 -23 22 17 27 21 56 43 22 22 29 21 51 43 -0.72 - 94 0 0 21 37 18 11 19 55.0 40 261 -22 21 47 39 21 26 59 21 52 40 21 22 0 -0.72 - 93 0 0 21 7 54 11 19 46.5 39 262 -21 21 18 13 20 57 37 21 23 13 20 52 39 -0.72 - 92 0 0 20 38 53 11 19 38.3 38 262 -20 20 49 9 20 28 38 20 54 8 20 23 41 -0.72 - 91 0 0 20 10 14 11 19 30.1 38 263 -19 20 20 28 20 0 1 20 25 26 19 55 6 -0.72 - 90 0 0 19 42 0 11 19 22.1 37 264 -18 19 52 12 19 31 49 19 57 8 19 26 54 -0.72 - 89 0 0 19 14 9 11 19 14.3 36 265 -17 19 24 19 19 4 1 19 29 15 18 59 7 -0.72 - 88 0 0 18 46 44 11 19 6.7 35 265 -16 18 56 52 18 36 38 19 1 46 18 31 45 -0.72 - 87 0 0 18 19 45 11 18 59.2 34 266 -15 18 29 51 18 9 40 18 34 44 18 4 49 -0.72 - 86 0 0 17 53 12 11 18 51.8 33 267 -14 18 3 15 17 43 9 18 8 8 17 38 19 -0.72 - 85 0 0 17 27 5 11 18 44.7 32 267 -13 17 37 7 17 17 5 17 41 58 17 12 15 -0.73 - 84 0 0 17 1 27 11 18 37.7 31 268 -12 17 11 26 16 51 28 17 16 17 16 46 40 -0.73 - 83 0 0 16 36 16 11 18 31.0 31 268 -11 16 46 13 16 26 19 16 51 3 16 21 32 -0.73 - 82 0 0 16 11 33 11 18 24.4 30 269 -10 16 21 29 16 1 39 16 26 17 15 56 52 -0.73 - 81 0 0 15 47 20 11 18 18.0 29 269 -9 15 57 13 15 37 27 16 2 1 15 32 41 -0.73 - 80 0 0 15 23 36 11 18 11.8 28 270 -8 15 33 27 15 13 45 15 38 14 15 9 0 -0.73 - 79 0 0 15 0 21 11 18 5.7 27 270 -7 15 10 11 14 50 33 15 14 57 14 45 49 -0.73 - 78 0 0 14 37 37 11 17 59.9 26 271 -6 14 47 25 14 27 50 14 52 10 14 23 7 -0.73 - 77 0 0 14 15 24 11 17 54.3 25 271 -5 14 25 10 14 5 39 14 29 54 14 0 57 -0.73 - 76 0 0 13 53 42 11 17 48.9 24 272 -4 14 3 26 13 43 58 14 8 9 13 39 17 -0.73 - 75 0 0 13 32 31 11 17 43.7 23 272 -3 13 42 13 13 22 49 13 46 56 13 18 9 -0.73 - 74 0 0 13 11 52 11 17 38.7 22 272 -2 13 21 33 13 2 12 13 26 14 12 57 32 -0.73 - 73 0 0 12 51 45 11 17 33.9 21 273 -1 13 1 24 12 42 7 13 6 5 12 37 28 -0.73 - 72 0 0 12 32 10 11 17 29.3 20 273 0 12 41 48 12 22 34 12 46 28 12 17 56 -0.74 - 71 0 0 12 13 9 11 17 24.9 19 273 1 12 22 45 12 3 34 12 27 24 11 58 56 -0.74 - 70 0 0 11 54 40 11 17 20.8 18 274 2 12 4 15 11 45 7 12 8 53 11 40 30 -0.74 - 69 0 0 11 36 45 11 17 16.8 17 274 3 11 46 18 11 27 13 11 50 56 11 22 37 -0.74 - 68 0 0 11 19 23 11 17 13.1 16 274 4 11 28 55 11 9 53 11 33 32 11 5 17 -0.74 - 67 0 0 11 2 36 11 17 9.6 15 274 5 11 12 6 10 53 6 11 16 42 10 48 32 -0.74 - 66 0 0 10 46 22 11 17 6.3 14 275 6 10 55 51 10 36 54 11 0 26 10 32 20 -0.75 - 65 0 0 10 30 43 11 17 3.2 13 275 7 10 40 10 10 21 16 10 44 45 10 16 43 -0.75 - 64 0 0 10 15 38 11 17 0.3 12 275 8 10 25 5 10 6 13 10 29 39 10 1 40 -0.75 - 63 0 0 10 1 9 11 16 57.7 11 275 9 10 10 34 9 51 44 10 15 7 9 47 12 -0.76 - 62 0 0 9 47 14 11 16 55.3 10 275 10 9 56 38 9 37 51 10 1 11 9 33 19 -0.76 - 61 0 0 9 33 54 11 16 53.1 9 276 11 9 43 17 9 24 32 9 47 50 9 20 1 -0.76 - 60 0 0 9 21 10 11 16 51.1 8 276 12 9 30 32 9 11 49 9 35 4 9 7 19 -0.77 - 59 0 0 9 9 2 11 16 49.4 7 276 13 9 18 23 8 59 42 9 22 54 8 55 12 -0.78 - 58 0 0 8 57 29 11 16 47.9 6 276 14 9 6 49 8 48 10 9 11 20 8 43 40 -0.79 - 57 0 0 8 46 32 11 16 46.6 5 276 15 8 55 51 8 37 14 9 0 22 8 32 45 -0.80 - 56 0 0 8 36 12 11 16 45.5 4 276 16 8 45 30 8 26 54 8 50 0 8 22 25 -0.82 - 55 0 0 8 26 27 11 16 44.6 3 277 17 8 35 45 8 17 11 8 40 15 8 12 42 -0.85 - 54 0 0 8 17 19 11 16 44.0 2 277 18 8 26 36 8 8 4 8 31 6 8 3 35 -0.90 - 53 0 0 8 8 48 11 16 43.6 1 277 19 8 18 4 7 59 33 8 22 33 7 55 5 -1.04 - 52 0 0 8 0 53 11 16 43.4 0 277 20 8 10 8 7 51 39 8 14 37 7 47 11 -2.11 Uncertainty in time = +/- 3 secs Prediction of 2021 Dec 24.0 Data for the target star ------------------------ * name: UCAC4 486-052399 * constellation : Leo * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 10 35 21.8451 DE: +07 06 56.477 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 10 35 21.8452 DE: +07 06 56.477 * position source: Gaia EDR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 13.0 * B mag [mag]: 13.4 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (723) Hammonia asteroid class: approx. diameter [km]: 27 approx. diameter ["]: 0.018 distance from Earth [AU]: 2.07850 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#47 date of fit: 2021 Nov 10 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): 0.021", 0.001", 106.4° remarks: * orbital elements for (723)Hammonia : Mean anomaly = 89.7011723939 deg Arg. of pericenter = 250.6826461920 deg Long. of node = 163.1738941712 deg Inclination = 4.9902383653 deg Eccentricity = 0.0555876647 Semimajor axis = 2.9944693884 AU Perihelion dist = 2.8280138282 AU Mag: H = 10.08, G = 0.15 Epoch of elements : MJD 59612.47553750 TDT (2022 Feb 02.4755) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#472021Nov10,2.57,2022,2,2,11.4129,0.276248,0.519310,-5.323223,2.836187,-0.002248,0.001074,0.000001,-0.000001 -144.6979,7.0008,12.23,-16.74,False UCAC4 486-052399,10.58940143,7.1156880,13.38,13.01,12.81,0.0,0,,10.60875302,7.0008125,1.83,1.63,0,0,0 723,Hammonia,14.61,27.4,2.0785,0,0,-1.513,12.00,,2.0 0,89.6107,2022,2,2,250.6826,163.1739,4.9902,0.05559,2.99447,2.82801,10.08,5.0,0.15 1.242,0.0213,0.0010,106,0.0044,Known errors,-1.00,-1,-1,-1 20220202_052399,59572.00 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2021 Dec 24, 21:10 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org