IOTA/IOTA-ES occultation update for (1551) Argelander / UCAC4 331-131923 event on 2024 Oct 20, 11:56 UT Visible from Summary ------- On 2024 Oct 20 UT, the 10.1493631448342 km diameter asteroid (1551) Argelander will occult a 11.0 mag star in the constellation Sagittarius for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 6.07 mag to 17.07 mag (the magnitude of the asteroid) for at most 0.330 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 Oct 20, 11:52 - 2024 Oct 20, 11:59 * geocentric midpoint of event [JD]: 2460603.99731650 * magnitude of target star: 11.00 * magnitude drop [mag]: 6.07 * estimated maximum duration [s]: 0.330 * Moon: 87 % sunlit, 156° distance * Sun: 65° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 11 * 1 sigma uncertainty interval [path widths]: +/- 0.12 * 1 sigma uncertainty interval [seconds]: +/- 0.7 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.013, +/- 0.001) * 1 sigma uncertainty ellipse (major, minor, PA): (0.013", 0.000", 93°) * approx speed of asteroid's shadow [km/s]: 31.0601 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 331-131923 by 1551 Argelander on 2024 Oct 20 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 - 14 0 0 22 3 17 11 52 59.8 0 116 55 21 59 54 22 6 40 21 59 3 22 7 31 .... - 13 0 0 21 36 3 11 52 59.8 1 116 56 21 32 40 21 39 26 21 31 49 21 40 17 -0.10 - 12 0 0 21 8 49 11 53 0.0 2 117 57 21 5 26 21 12 12 21 4 36 21 13 3 -0.25 - 11 0 0 20 41 36 11 53 0.1 3 117 58 20 38 14 20 44 59 20 37 23 20 45 50 -0.31 - 10 0 0 20 14 25 11 53 0.4 4 117 58 20 11 3 20 17 48 20 10 12 20 18 39 -0.34 - 9 0 0 19 47 17 11 53 0.7 5 118 59 19 43 54 19 50 39 19 43 4 19 51 30 -0.35 - 8 0 0 19 20 12 11 53 1.2 6 118 60 19 16 49 19 23 34 19 15 59 19 24 24 -0.37 - 7 0 0 18 53 10 11 53 1.6 7 118 60 18 49 48 18 56 32 18 48 58 18 57 23 -0.37 - 6 0 0 18 26 14 11 53 2.2 8 119 61 18 22 52 18 29 36 18 22 1 18 30 26 -0.38 - 5 0 0 17 59 22 11 53 2.8 10 119 61 17 56 1 18 2 44 17 55 11 18 3 34 -0.39 - 4 0 0 17 32 37 11 53 3.6 11 119 62 17 29 16 17 35 59 17 28 26 17 36 49 -0.39 - 3 0 0 17 5 59 11 53 4.4 12 120 62 17 2 38 17 9 21 17 1 48 17 10 11 -0.39 - 2 0 0 16 39 29 11 53 5.2 13 120 63 16 36 8 16 42 50 16 35 18 16 43 40 -0.40 - 1 0 0 16 13 7 11 53 6.2 14 120 63 16 9 46 16 16 28 16 8 56 16 17 18 -0.40 0 0 0 15 46 54 11 53 7.2 15 121 64 15 43 34 15 50 15 15 42 44 15 51 5 -0.40 1 0 0 15 20 51 11 53 8.3 16 121 64 15 17 31 15 24 11 15 16 41 15 25 1 -0.40 2 0 0 14 54 59 11 53 9.4 17 121 64 14 51 39 14 58 18 14 50 49 14 59 8 -0.40 3 0 0 14 29 17 11 53 10.7 18 122 64 14 25 58 14 32 37 14 25 8 14 33 27 -0.41 4 0 0 14 3 48 11 53 12.0 19 122 65 14 0 28 14 7 7 13 59 39 14 7 57 -0.41 5 0 0 13 38 31 11 53 13.4 20 122 65 13 35 12 13 41 50 13 34 22 13 42 39 -0.41 6 0 0 13 13 27 11 53 14.8 21 122 65 13 10 8 13 16 46 13 9 19 13 17 35 -0.41 7 0 0 12 48 37 11 53 16.3 22 123 65 12 45 19 12 51 55 12 44 29 12 52 45 -0.41 8 0 0 12 24 2 11 53 17.9 23 123 65 12 20 44 12 27 20 12 19 54 12 28 9 -0.41 9 0 0 11 59 41 11 53 19.6 24 123 65 11 56 24 12 2 59 11 55 34 12 3 48 -0.41 10 0 0 11 35 36 11 53 21.3 25 124 65 11 32 19 11 38 54 11 31 30 11 39 43 -0.41 11 0 0 11 11 48 11 53 23.2 26 124 65 11 8 31 11 15 5 11 7 42 11 15 54 -0.41 12 0 0 10 48 17 11 53 25.0 27 124 64 10 45 0 10 51 33 10 44 11 10 52 22 -0.41 13 0 0 10 25 2 11 53 27.0 28 125 64 10 21 46 10 28 19 10 20 57 10 29 8 -0.42 14 0 0 10 2 6 11 53 29.0 29 125 64 9 58 50 10 5 22 9 58 2 10 6 11 -0.42 15 0 0 9 39 29 11 53 31.0 30 125 64 9 36 13 9 42 44 9 35 24 9 43 33 -0.42 16 0 0 9 17 10 11 53 33.2 31 126 63 9 13 55 9 20 25 9 13 6 9 21 14 -0.42 17 0 0 8 55 11 11 53 35.4 32 126 63 8 51 56 8 58 26 8 51 8 8 59 14 -0.42 18 0 0 8 33 32 11 53 37.6 34 126 62 8 30 17 8 36 46 8 29 29 8 37 35 -0.42 19 0 0 8 12 13 11 53 39.9 35 127 62 8 8 59 8 15 27 8 8 10 8 16 15 -0.42 20 0 0 7 51 15 11 53 42.3 36 127 61 7 48 1 7 54 29 7 47 13 7 55 17 -0.42 21 0 0 7 30 38 11 53 44.7 37 127 61 7 27 25 7 33 52 7 26 37 7 34 40 -0.42 22 0 0 7 10 24 11 53 47.2 38 128 60 7 7 11 7 13 37 7 6 23 7 14 25 -0.42 23 0 0 6 50 31 11 53 49.7 39 128 59 6 47 18 6 53 44 6 46 30 6 54 32 -0.42 24 0 0 6 31 1 11 53 52.3 40 129 59 6 27 49 6 34 13 6 27 1 6 35 1 -0.42 25 0 0 6 11 54 11 53 55.0 41 129 58 6 8 42 6 15 5 6 7 54 6 15 53 -0.42 26 0 0 5 53 10 11 53 57.7 41 129 57 5 49 58 5 56 21 5 49 10 5 57 9 -0.42 27 0 0 5 34 49 11 54 0.4 42 130 57 5 31 38 5 38 0 5 30 50 5 38 48 -0.42 28 0 0 5 16 53 11 54 3.2 43 130 56 5 13 42 5 20 4 5 12 54 5 20 51 -0.42 29 0 0 4 59 21 11 54 6.1 44 131 55 4 56 10 5 2 31 4 55 23 5 3 19 -0.42 30 0 0 4 42 13 11 54 8.9 45 131 54 4 39 3 4 45 23 4 38 15 4 46 10 -0.42 31 0 0 4 25 30 11 54 11.9 46 132 54 4 22 20 4 28 40 4 21 33 4 29 27 -0.42 32 0 0 4 9 12 11 54 14.8 47 133 53 4 6 3 4 12 22 4 5 16 4 13 9 -0.42 33 0 0 3 53 20 11 54 17.8 48 133 52 3 50 11 3 56 29 3 49 24 3 57 16 -0.43 34 0 0 3 37 53 11 54 20.9 49 134 51 3 34 44 3 41 2 3 33 57 3 41 49 -0.43 35 0 0 3 22 52 11 54 24.0 50 134 50 3 19 44 3 26 1 3 18 57 3 26 48 -0.43 36 0 0 3 8 17 11 54 27.1 51 135 49 3 5 9 3 11 26 3 4 22 3 12 13 -0.43 37 0 0 2 54 9 11 54 30.3 52 136 48 2 51 1 2 57 17 2 50 14 2 58 4 -0.43 38 0 0 2 40 27 11 54 33.5 53 137 48 2 37 19 2 43 34 2 36 32 2 44 21 -0.43 39 0 0 2 27 11 11 54 36.7 53 138 47 2 24 4 2 30 19 2 23 17 2 31 5 -0.43 40 0 0 2 14 23 11 54 40.0 54 138 46 2 11 16 2 17 30 2 10 29 2 18 16 -0.43 41 0 0 2 2 1 11 54 43.2 55 139 45 1 58 54 2 5 8 1 58 8 2 5 55 -0.43 42 0 0 1 50 7 11 54 46.6 56 140 44 1 47 0 1 53 13 1 46 14 1 54 0 -0.43 43 0 0 1 38 40 11 54 49.9 57 141 43 1 35 33 1 41 46 1 34 47 1 42 32 -0.43 44 0 0 1 27 40 11 54 53.3 57 142 42 1 24 34 1 30 46 1 23 48 1 31 32 -0.43 45 0 0 1 17 8 11 54 56.7 58 144 41 1 14 2 1 20 14 1 13 16 1 21 0 -0.43 46 0 0 1 7 4 11 55 0.1 59 145 40 1 3 58 1 10 9 1 3 12 1 10 55 -0.43 47 0 0 0 57 27 11 55 3.5 60 146 39 0 54 22 1 0 32 0 53 36 1 1 19 -0.43 48 0 0 0 48 18 11 55 7.0 60 147 38 0 45 13 0 51 24 0 44 27 0 52 10 -0.43 49 0 0 0 39 38 11 55 10.5 61 149 37 0 36 33 0 42 43 0 35 47 0 43 29 -0.43 50 0 0 0 31 25 11 55 14.0 62 150 37 0 28 21 0 34 30 0 27 34 0 35 16 -0.43 51 0 0 0 23 41 11 55 17.5 62 152 36 0 20 36 0 26 46 0 19 50 0 27 32 -0.43 52 0 0 0 16 25 11 55 21.1 63 153 35 0 13 20 0 19 29 0 12 35 0 20 15 -0.43 53 0 0 0 9 37 11 55 24.6 63 155 34 0 6 33 0 12 41 0 5 47 0 13 27 -0.43 54 0 0 0 3 18 11 55 28.2 64 157 33 0 0 14 0 6 22 - 0 0 32 0 7 8 -0.43 55 0 0 - 0 2 33 11 55 31.7 64 159 32 - 0 5 37 0 0 31 - 0 6 23 0 1 17 -0.43 56 0 0 - 0 7 55 11 55 35.3 65 161 31 - 0 10 59 - 0 4 51 - 0 11 45 - 0 4 5 -0.43 57 0 0 - 0 12 49 11 55 38.9 65 163 30 - 0 15 53 - 0 9 45 - 0 16 38 - 0 8 59 -0.43 58 0 0 - 0 17 14 11 55 42.5 65 165 29 - 0 20 17 - 0 14 10 - 0 21 3 - 0 13 24 -0.43 59 0 0 - 0 21 10 11 55 46.2 66 167 28 - 0 24 14 - 0 18 7 - 0 24 59 - 0 17 21 -0.43 60 0 0 - 0 24 38 11 55 49.8 66 169 27 - 0 27 41 - 0 21 34 - 0 28 27 - 0 20 49 -0.43 61 0 0 - 0 27 37 11 55 53.4 66 171 26 - 0 30 40 - 0 24 33 - 0 31 26 - 0 23 48 -0.43 62 0 0 - 0 30 7 11 55 57.0 66 174 25 - 0 33 10 - 0 27 4 - 0 33 56 - 0 26 18 -0.43 63 0 0 - 0 32 8 11 56 0.7 67 176 24 - 0 35 12 - 0 29 5 - 0 35 57 - 0 28 19 -0.43 64 0 0 - 0 33 41 11 56 4.3 67 178 23 - 0 36 44 - 0 30 38 - 0 37 30 - 0 29 52 -0.43 65 0 0 - 0 34 45 11 56 8.0 67 181 22 - 0 37 48 - 0 31 42 - 0 38 34 - 0 30 56 -0.43 66 0 0 - 0 35 20 11 56 11.6 67 183 21 - 0 38 23 - 0 32 17 - 0 39 9 - 0 31 31 -0.43 67 0 0 - 0 35 26 11 56 15.2 67 185 20 - 0 38 29 - 0 32 23 - 0 39 15 - 0 31 37 -0.43 68 0 0 - 0 35 3 11 56 18.9 66 188 19 - 0 38 7 - 0 32 0 - 0 38 52 - 0 31 14 -0.43 69 0 0 - 0 34 12 11 56 22.5 66 190 18 - 0 37 15 - 0 31 9 - 0 38 1 - 0 30 23 -0.43 70 0 0 - 0 32 52 11 56 26.1 66 192 17 - 0 35 55 - 0 29 48 - 0 36 41 - 0 29 3 -0.43 71 0 0 - 0 31 3 11 56 29.7 66 194 16 - 0 34 6 - 0 27 59 - 0 34 52 - 0 27 13 -0.43 72 0 0 - 0 28 45 11 56 33.4 65 196 15 - 0 31 48 - 0 25 41 - 0 32 34 - 0 24 56 -0.43 73 0 0 - 0 25 58 11 56 37.0 65 198 14 - 0 29 1 - 0 22 55 - 0 29 47 - 0 22 9 -0.43 74 0 0 - 0 22 43 11 56 40.6 65 200 13 - 0 25 46 - 0 19 39 - 0 26 32 - 0 18 53 -0.43 75 0 0 - 0 18 59 11 56 44.1 64 202 12 - 0 22 2 - 0 15 55 - 0 22 48 - 0 15 9 -0.43 76 0 0 - 0 14 46 11 56 47.7 64 204 11 - 0 17 50 - 0 11 42 - 0 18 36 - 0 10 57 -0.43 77 0 0 - 0 10 5 11 56 51.3 63 206 10 - 0 13 9 - 0 7 1 - 0 13 54 - 0 6 15 -0.43 78 0 0 - 0 4 55 11 56 54.8 63 208 9 - 0 7 59 - 0 1 51 - 0 8 45 - 0 1 5 -0.43 79 0 0 0 0 44 11 56 58.3 62 209 8 - 0 2 20 0 3 48 - 0 3 6 0 4 34 -0.43 80 0 0 0 6 50 11 57 1.9 62 211 7 0 3 46 0 9 55 0 3 0 0 10 41 -0.43 81 0 0 0 13 26 11 57 5.4 61 212 6 0 10 21 0 16 30 0 9 35 0 17 16 -0.43 82 0 0 0 20 29 11 57 8.8 60 214 5 0 17 25 0 23 34 0 16 39 0 24 20 -0.43 83 0 0 0 28 1 11 57 12.3 60 215 4 0 24 57 0 31 6 0 24 11 0 31 52 -0.43 84 0 0 0 36 1 11 57 15.7 59 216 3 0 32 57 0 39 6 0 32 11 0 39 52 -0.43 85 0 0 0 44 30 11 57 19.1 58 218 2 0 41 25 0 47 35 0 40 39 0 48 21 -0.43 86 0 0 0 53 26 11 57 22.5 58 219 1 0 50 21 0 56 31 0 49 35 0 57 17 -0.43 87 0 0 1 2 50 11 57 25.9 57 220 0 0 59 45 1 5 56 0 58 58 1 6 42 -0.43 88 0 0 1 12 42 11 57 29.2 56 221 -1 1 9 37 1 15 48 1 8 50 1 16 34 -0.43 89 0 0 1 23 2 11 57 32.5 55 222 -2 1 19 56 1 26 8 1 19 10 1 26 54 -0.43 90 0 0 1 33 49 11 57 35.8 54 223 -3 1 30 43 1 36 55 1 29 57 1 37 42 -0.43 91 0 0 1 45 4 11 57 39.1 54 224 -4 1 41 58 1 48 10 1 41 11 1 48 57 -0.43 92 0 0 1 56 46 11 57 42.3 53 224 -6 1 53 40 1 59 53 1 52 53 2 0 39 -0.43 93 0 0 2 8 56 11 57 45.5 52 225 -7 2 5 49 2 12 3 2 5 2 2 12 49 -0.43 94 0 0 2 21 32 11 57 48.6 51 226 -8 2 18 25 2 24 39 2 17 38 2 25 26 -0.43 95 0 0 2 34 35 11 57 51.8 50 227 -9 2 31 28 2 37 43 2 30 41 2 38 30 -0.43 96 0 0 2 48 5 11 57 54.8 49 227 -10 2 44 57 2 51 13 2 44 11 2 52 0 -0.43 97 0 0 3 2 2 11 57 57.9 48 228 -11 2 58 54 3 5 10 2 58 7 3 5 57 -0.43 98 0 0 3 16 24 11 58 0.9 47 229 -12 3 13 16 3 19 33 3 12 29 3 20 20 -0.43 99 0 0 3 31 13 11 58 3.9 46 229 -13 3 28 5 3 34 22 3 27 18 3 35 9 -0.43 100 0 0 3 46 28 11 58 6.8 46 230 -14 3 43 19 3 49 37 3 42 32 3 50 24 -0.43 101 0 0 4 2 9 11 58 9.7 45 230 -15 3 58 59 4 5 18 3 58 12 4 6 5 -0.43 102 0 0 4 18 15 11 58 12.5 44 231 -16 4 15 5 4 21 24 4 14 18 4 22 12 -0.43 103 0 0 4 34 46 11 58 15.3 43 231 -17 4 31 36 4 37 56 4 30 48 4 38 43 -0.43 104 0 0 4 51 42 11 58 18.0 42 232 -18 4 48 31 4 54 52 4 47 44 4 55 39 -0.43 105 0 0 5 9 2 11 58 20.7 41 232 -19 5 5 52 5 12 13 5 5 4 5 13 1 -0.43 106 0 0 5 26 47 11 58 23.4 40 232 -20 5 23 36 5 29 58 5 22 49 5 30 46 -0.43 107 0 0 5 44 56 11 58 26.0 39 233 -21 5 41 45 5 48 8 5 40 57 5 48 55 -0.43 108 0 0 6 3 29 11 58 28.5 38 233 -22 6 0 17 6 6 41 5 59 29 6 7 28 -0.43 109 0 0 6 22 25 11 58 31.0 37 234 -23 6 19 13 6 25 37 6 18 25 6 26 25 -0.43 110 0 0 6 41 44 11 58 33.4 36 234 -24 6 38 32 6 44 56 6 37 44 6 45 44 -0.43 111 0 0 7 1 26 11 58 35.8 35 234 -25 6 58 13 7 4 38 6 57 25 7 5 27 -0.43 112 0 0 7 21 30 11 58 38.1 34 235 -26 7 18 17 7 24 43 7 17 28 7 25 31 -0.43 113 0 0 7 41 55 11 58 40.4 33 235 -27 7 38 42 7 45 9 7 37 54 7 45 57 -0.43 114 0 0 8 2 43 11 58 42.6 32 235 -28 7 59 29 8 5 57 7 58 41 8 6 45 -0.43 115 0 0 8 23 51 11 58 44.7 31 236 -29 8 20 37 8 27 5 8 19 49 8 27 54 -0.43 116 0 0 8 45 20 11 58 46.8 30 236 -30 8 42 6 8 48 35 8 41 17 8 49 23 -0.43 117 0 0 9 7 9 11 58 48.8 29 236 -31 9 3 54 9 10 24 9 3 6 9 11 13 -0.43 118 0 0 9 29 18 11 58 50.8 28 237 -32 9 26 3 9 32 33 9 25 14 9 33 22 -0.43 119 0 0 9 51 46 11 58 52.7 27 237 -34 9 48 30 9 55 1 9 47 41 9 55 50 -0.43 120 0 0 10 14 32 11 58 54.5 26 237 -35 10 11 16 10 17 48 10 10 28 10 18 37 -0.43 121 0 0 10 37 37 11 58 56.3 25 237 -36 10 34 21 10 40 54 10 33 32 10 41 43 -0.43 122 0 0 11 1 0 11 58 58.0 24 238 -37 10 57 43 11 4 16 10 56 54 11 5 5 -0.43 123 0 0 11 24 39 11 58 59.6 22 238 -38 11 21 22 11 27 56 11 20 33 11 28 45 -0.43 124 0 0 11 48 35 11 59 1.1 21 238 -39 11 45 18 11 51 52 11 44 28 11 52 42 -0.43 125 0 0 12 12 47 11 59 2.6 20 239 -40 12 9 29 12 16 5 12 8 40 12 16 54 -0.43 126 0 0 12 37 14 11 59 4.0 19 239 -41 12 33 56 12 40 32 12 33 7 12 41 22 -0.43 127 0 0 13 1 56 11 59 5.3 18 239 -42 12 58 38 13 5 15 12 57 48 13 6 4 -0.43 128 0 0 13 26 52 11 59 6.6 17 239 -43 13 23 33 13 30 11 13 22 44 13 31 1 -0.43 129 0 0 13 52 2 11 59 7.8 16 240 -44 13 48 43 13 55 21 13 47 53 13 56 10 -0.43 130 0 0 14 17 24 11 59 8.9 15 240 -45 14 14 5 14 20 43 14 13 15 14 21 33 -0.43 131 0 0 14 42 58 11 59 10.0 14 240 -46 14 39 39 14 46 18 14 38 49 14 47 8 -0.43 132 0 0 15 8 44 11 59 10.9 13 240 -47 15 5 24 15 12 4 15 4 35 15 12 54 -0.43 133 0 0 15 34 41 11 59 11.8 12 241 -48 15 31 21 15 38 1 15 30 31 15 38 51 -0.43 134 0 0 16 0 48 11 59 12.6 11 241 -48 15 57 28 16 4 9 15 56 38 16 4 59 -0.43 135 0 0 16 27 4 11 59 13.4 10 241 -49 16 23 44 16 30 25 16 22 53 16 31 15 -0.43 136 0 0 16 53 29 11 59 14.0 9 242 -50 16 50 8 16 56 50 16 49 18 16 57 41 -0.43 137 0 0 17 20 2 11 59 14.6 8 242 -51 17 16 41 17 23 24 17 15 51 17 24 14 -0.43 138 0 0 17 46 42 11 59 15.1 7 242 -52 17 43 21 17 50 4 17 42 31 17 50 54 -0.44 139 0 0 18 13 29 11 59 15.6 6 243 -53 18 10 7 18 16 51 18 9 17 18 17 41 -0.44 140 0 0 18 40 22 11 59 15.9 5 243 -54 18 37 0 18 43 44 18 36 9 18 44 34 -0.44 141 0 0 19 7 19 11 59 16.2 4 243 -55 19 3 57 19 10 41 19 3 7 19 11 32 -0.44 142 0 0 19 34 21 11 59 16.4 2 244 -56 19 30 59 19 37 44 19 30 8 19 38 34 -0.45 143 0 0 20 1 27 11 59 16.6 1 244 -57 19 58 4 20 4 49 19 57 14 20 5 40 -0.47 144 0 0 20 28 35 11 59 16.6 0 244 -57 20 25 12 20 31 58 20 24 22 20 32 48 -0.57 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.6 Data for the target star ------------------------ * name: UCAC4 331-131923 * constellation : Sagittarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 18 11 22.9534 DE: -23 56 15.892 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 18 11 22.9533 DE: -23 56 15.892 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 11.0 * B mag [mag]: 11.8 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (1551) Argelander asteroid class: approx. diameter [km]: 10 approx. diameter ["]: 0.006 distance from Earth [AU]: 2.50440 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#52 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): 0.013", 0.000", 93.183° remarks: * orbital elements for (1551)Argelander : Mean anomaly = 321.0185131567 deg Arg. of pericenter = 232.8691486879 deg Long. of node = 107.2082267932 deg Inclination = 3.7604682537 deg Eccentricity = 0.0657083881 Semimajor axis = 2.3947506665 AU Perihelion dist = 2.2373954602 AU Mag: H = 12.18, G = 0.15 Epoch of elements : MJD 60603.49731625 TDT (2024 Oct 20.4973) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#522023Apr24,0.33,2024,10,20,11.935596,0.005279,0.396451,17.529421,-0.247110,0.005047,0.000089,-0.000001,0.000000 64.7504,-23.9331,-2.86,-10.62,False UCAC4 331-131923,18.18970933,-23.9377477,11.78,11.00,10.58,0.1,0,,18.21474038,-23.9331362,6.07,6.04,0,0,0 1551,Argelander,17.07,10.331,2.5044,0,0,4.490,-0.86,,0.8,0 0,320.8862,2024,10,20,232.8691,107.2082,3.7605,0.06571,2.39475,2.23740,12.18,5.0,0.15 1.125,0.0127,0.0005,93,0.0007,Known errors,0.75,0,-1,-1 20241020_131923,60140.65 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 15:33 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org