IOTA/IOTA-ES occultation update for (1031) Arctica / UCAC4 431-054623 event on 2024 Jul 02, 19:46 UT Visible from Summary ------- On 2024 Jul 02 UT, the 77.746 km diameter asteroid (1031) Arctica will occult a 11.7 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 3.61 mag to 15.23 mag (the magnitude of the asteroid) for at most 2.810 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: 100 * date and approx. time of event: 2024 Jul 02, 19:42 - 2024 Jul 02, 19:50 * geocentric midpoint of event [JD]: 2460494.32421529 * magnitude of target star: 11.66 * magnitude drop [mag]: 3.61 * estimated maximum duration [s]: 2.810 * Moon: 12 % sunlit, 110° distance * Sun: 71° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 78 * 1 sigma uncertainty interval [path widths]: +/- 0.05 * 1 sigma uncertainty interval [seconds]: +/- 1.5 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.019, +/- 0.003) * 1 sigma uncertainty ellipse (major, minor, PA): (0.019", 0.001", 99°) * approx speed of asteroid's shadow [km/s]: 27.6551 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 431-054623 by 1031 Arctica on 2024 Jul 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 -137 0 0 9 0 2 19 43 1.8 0 94 64 8 38 52 9 21 11 8 36 56 9 23 8 .... -136 0 0 8 55 45 19 43 1.8 1 94 65 8 34 35 9 16 55 8 32 39 9 18 51 0.01 -135 0 0 8 51 21 19 43 1.9 2 94 66 8 30 11 9 12 30 8 28 14 9 14 27 -0.01 -134 0 0 8 46 49 19 43 2.1 3 95 67 8 25 39 9 7 59 8 23 42 9 9 56 -0.02 -133 0 0 8 42 10 19 43 2.3 4 95 67 8 21 0 9 3 20 8 19 3 9 5 17 -0.02 -132 0 0 8 37 24 19 43 2.7 5 95 68 8 16 13 8 58 34 8 14 17 9 0 31 -0.03 -131 0 0 8 32 30 19 43 3.0 6 95 69 8 11 20 8 53 41 8 9 23 8 55 38 -0.03 -130 0 0 8 27 29 19 43 3.5 7 95 69 8 6 19 8 48 40 8 4 22 8 50 37 -0.03 -129 0 0 8 22 22 19 43 4.0 8 95 70 8 1 11 8 43 33 7 59 14 8 45 30 -0.03 -128 0 0 8 17 7 19 43 4.6 9 95 71 7 55 56 8 38 18 7 53 59 8 40 15 -0.03 -127 0 0 8 11 46 19 43 5.3 10 96 71 7 50 34 8 32 57 7 48 37 8 34 54 -0.03 -126 0 0 8 6 17 19 43 6.0 11 96 72 7 45 6 8 27 29 7 43 9 8 29 26 -0.03 -125 0 0 8 0 42 19 43 6.8 12 96 72 7 39 30 8 21 54 7 37 34 8 23 51 -0.03 -124 0 0 7 55 1 19 43 7.7 13 96 72 7 33 49 8 16 13 7 31 52 8 18 10 -0.03 -123 0 0 7 49 12 19 43 8.6 14 96 73 7 28 0 8 10 25 7 26 3 8 12 22 -0.03 -122 0 0 7 43 18 19 43 9.6 15 96 73 7 22 5 8 4 30 7 20 8 8 6 27 -0.03 -121 0 0 7 37 17 19 43 10.7 16 96 73 7 16 4 7 58 30 7 14 7 8 0 27 -0.03 -120 0 0 7 31 10 19 43 11.9 17 97 74 7 9 57 7 52 23 7 8 0 7 54 20 -0.03 -119 0 0 7 24 56 19 43 13.1 18 97 74 7 3 43 7 46 10 7 1 46 7 48 7 -0.03 -118 0 0 7 18 37 19 43 14.3 19 97 74 6 57 24 7 39 51 6 55 27 7 41 48 -0.03 -117 0 0 7 12 12 19 43 15.7 20 97 74 6 50 59 7 33 26 6 49 1 7 35 23 -0.03 -116 0 0 7 5 41 19 43 17.1 21 97 74 6 44 27 7 26 55 6 42 30 7 28 52 -0.03 -115 0 0 6 59 4 19 43 18.6 22 97 74 6 37 50 7 20 19 6 35 53 7 22 16 -0.03 -114 0 0 6 52 22 19 43 20.1 23 97 74 6 31 8 7 13 36 6 29 11 7 15 34 -0.03 -113 0 0 6 45 34 19 43 21.8 24 97 74 6 24 20 7 6 49 6 22 23 7 8 46 -0.03 -112 0 0 6 38 41 19 43 23.4 25 98 73 6 17 27 6 59 56 6 15 30 7 1 53 -0.03 -111 0 0 6 31 43 19 43 25.2 26 98 73 6 10 28 6 52 58 6 8 31 6 54 55 -0.03 -110 0 0 6 24 40 19 43 27.0 27 98 73 6 3 25 6 45 55 6 1 28 6 47 52 -0.03 -109 0 0 6 17 31 19 43 28.9 28 98 72 5 56 16 6 38 47 5 54 19 6 40 44 -0.03 -108 0 0 6 10 18 19 43 30.8 29 98 72 5 49 3 6 31 34 5 47 6 6 33 31 -0.03 -107 0 0 6 3 0 19 43 32.8 30 98 71 5 41 45 6 24 16 5 39 48 6 26 14 -0.03 -106 0 0 5 55 38 19 43 34.9 31 98 71 5 34 22 6 16 54 5 32 25 6 18 51 -0.03 -105 0 0 5 48 11 19 43 37.0 32 98 70 5 26 55 6 9 27 5 24 58 6 11 25 -0.03 -104 0 0 5 40 40 19 43 39.2 33 98 70 5 19 24 6 1 56 5 17 26 6 3 54 -0.03 -103 0 0 5 33 5 19 43 41.5 34 99 69 5 11 48 5 54 21 5 9 51 5 56 18 -0.03 -102 0 0 5 25 25 19 43 43.8 35 99 68 5 4 9 5 46 42 5 2 11 5 48 39 -0.03 -101 0 0 5 17 42 19 43 46.2 36 99 68 4 56 25 5 38 59 4 54 28 5 40 56 -0.03 -100 0 0 5 9 55 19 43 48.6 37 99 67 4 48 38 5 31 12 4 46 41 5 33 9 -0.03 - 99 0 0 5 2 4 19 43 51.1 38 99 66 4 40 47 5 23 21 4 38 50 5 25 19 -0.03 - 98 0 0 4 54 10 19 43 53.7 39 99 66 4 32 53 5 15 28 4 30 56 5 17 25 -0.03 - 97 0 0 4 46 13 19 43 56.3 40 99 65 4 24 55 5 7 30 4 22 58 5 9 28 -0.03 - 96 0 0 4 38 12 19 43 59.0 41 99 64 4 16 55 4 59 30 4 14 57 5 1 27 -0.03 - 95 0 0 4 30 9 19 44 1.7 42 100 63 4 8 51 4 51 27 4 6 54 4 53 24 -0.03 - 94 0 0 4 22 2 19 44 4.5 43 100 62 4 0 45 4 43 20 3 58 47 4 45 18 -0.03 - 93 0 0 4 13 53 19 44 7.3 44 100 62 3 52 35 4 35 11 3 50 38 4 37 9 -0.03 - 92 0 0 4 5 42 19 44 10.2 45 100 61 3 44 24 4 27 0 3 42 26 4 28 57 -0.03 - 91 0 0 3 57 28 19 44 13.2 46 100 60 3 36 10 4 18 46 3 34 12 4 20 44 -0.03 - 90 0 0 3 49 12 19 44 16.1 47 100 59 3 27 53 4 10 30 3 25 56 4 12 28 -0.03 - 89 0 0 3 40 53 19 44 19.2 48 100 58 3 19 35 4 2 12 3 17 38 4 4 9 -0.03 - 88 0 0 3 32 33 19 44 22.3 49 100 57 3 11 15 3 53 52 3 9 17 3 55 49 -0.03 - 87 0 0 3 24 11 19 44 25.4 50 100 57 3 2 53 3 45 30 3 0 55 3 47 27 -0.03 - 86 0 0 3 15 48 19 44 28.6 51 101 56 2 54 29 3 37 7 2 52 32 3 39 4 -0.04 - 85 0 0 3 7 23 19 44 31.9 52 101 55 2 46 4 3 28 42 2 44 7 3 30 39 -0.04 - 84 0 0 2 58 57 19 44 35.1 53 101 54 2 37 38 3 20 16 2 35 41 3 22 13 -0.04 - 83 0 0 2 50 30 19 44 38.5 54 101 53 2 29 11 3 11 49 2 27 13 3 13 46 -0.04 - 82 0 0 2 42 1 19 44 41.8 55 101 52 2 20 43 3 3 20 2 18 45 3 5 18 -0.04 - 81 0 0 2 33 33 19 44 45.3 57 101 51 2 12 14 2 54 52 2 10 16 2 56 49 -0.04 - 80 0 0 2 25 3 19 44 48.7 58 101 50 2 3 44 2 46 22 2 1 47 2 48 20 -0.04 - 79 0 0 2 16 33 19 44 52.2 59 101 49 1 55 14 2 37 52 1 53 17 2 39 50 -0.04 - 78 0 0 2 8 3 19 44 55.8 60 102 48 1 46 44 2 29 22 1 44 47 2 31 20 -0.04 - 77 0 0 1 59 33 19 44 59.3 61 102 47 1 38 14 2 20 52 1 36 17 2 22 50 -0.04 - 76 0 0 1 51 3 19 45 2.9 62 102 47 1 29 44 2 12 22 1 27 47 2 14 20 -0.04 - 75 0 0 1 42 33 19 45 6.6 63 102 46 1 21 14 2 3 52 1 19 17 2 5 50 -0.04 - 74 0 0 1 34 4 19 45 10.3 64 102 45 1 12 45 1 55 23 1 10 47 1 57 20 -0.04 - 73 0 0 1 25 35 19 45 14.0 65 102 44 1 4 16 1 46 54 1 2 19 1 48 51 -0.04 - 72 0 0 1 17 7 19 45 17.7 66 103 43 0 55 48 1 38 26 0 53 51 1 40 23 -0.04 - 71 0 0 1 8 40 19 45 21.5 67 103 42 0 47 21 1 29 59 0 45 24 1 31 56 -0.04 - 70 0 0 1 0 14 19 45 25.3 68 103 41 0 38 55 1 21 33 0 36 58 1 23 30 -0.04 - 69 0 0 0 51 49 19 45 29.2 69 103 40 0 30 31 1 13 8 0 28 33 1 15 6 -0.04 - 68 0 0 0 43 26 19 45 33.0 70 104 39 0 22 8 1 4 45 0 20 10 1 6 42 -0.04 - 67 0 0 0 35 4 19 45 36.9 71 104 38 0 13 46 0 56 23 0 11 49 0 58 21 -0.04 - 66 0 0 0 26 44 19 45 40.8 72 104 37 0 5 26 0 48 3 0 3 29 0 50 1 -0.04 - 65 0 0 0 18 27 19 45 44.8 73 105 36 - 0 2 52 0 39 45 - 0 4 49 0 41 43 -0.04 - 64 0 0 0 10 11 19 45 48.7 74 105 35 - 0 11 7 0 31 29 - 0 13 5 0 33 27 -0.04 - 63 0 0 0 1 57 19 45 52.7 75 106 34 - 0 19 21 0 23 15 - 0 21 18 0 25 13 -0.04 - 62 0 0 - 0 6 14 19 45 56.7 76 106 33 - 0 27 32 0 15 4 - 0 29 29 0 17 2 -0.04 - 61 0 0 - 0 14 22 19 46 0.7 77 107 32 - 0 35 40 0 6 56 - 0 37 37 0 8 53 -0.04 - 60 0 0 - 0 22 28 19 46 4.7 78 108 31 - 0 43 46 - 0 1 10 - 0 45 43 0 0 47 -0.04 - 59 0 0 - 0 30 31 19 46 8.8 79 108 30 - 0 51 48 - 0 9 13 - 0 53 46 - 0 7 16 -0.04 - 58 0 0 - 0 38 31 19 46 12.9 80 110 29 - 0 59 48 - 0 17 13 - 1 1 45 - 0 15 16 -0.04 - 57 0 0 - 0 46 27 19 46 16.9 81 111 28 - 1 7 44 - 0 25 10 - 1 9 42 - 0 23 12 -0.04 - 56 0 0 - 0 54 20 19 46 21.0 82 113 27 - 1 15 37 - 0 33 3 - 1 17 34 - 0 31 5 -0.04 - 55 0 0 - 1 2 10 19 46 25.1 83 115 26 - 1 23 26 - 0 40 53 - 1 25 24 - 0 38 55 -0.04 - 54 0 0 - 1 9 55 19 46 29.2 84 118 26 - 1 31 12 - 0 48 39 - 1 33 9 - 0 46 41 -0.04 - 53 0 0 - 1 17 37 19 46 33.3 85 122 25 - 1 38 54 - 0 56 21 - 1 40 51 - 0 54 23 -0.04 - 52 0 0 - 1 25 15 19 46 37.4 86 127 24 - 1 46 32 - 1 3 59 - 1 48 29 - 1 2 1 -0.04 - 51 0 0 - 1 32 49 19 46 41.5 87 136 23 - 1 54 5 - 1 11 33 - 1 56 3 - 1 9 35 -0.04 - 50 0 0 - 1 40 19 19 46 45.7 87 150 22 - 2 1 35 - 1 19 2 - 2 3 32 - 1 17 5 -0.04 - 49 0 0 - 1 47 44 19 46 49.8 88 171 21 - 2 8 59 - 1 26 28 - 2 10 57 - 1 24 30 -0.04 - 48 0 0 - 1 55 4 19 46 53.9 88 198 20 - 2 16 20 - 1 33 48 - 2 18 17 - 1 31 51 -0.04 - 47 0 0 - 2 2 20 19 46 58.0 87 221 19 - 2 23 35 - 1 41 4 - 2 25 32 - 1 39 7 -0.04 - 46 0 0 - 2 9 31 19 47 2.1 87 236 18 - 2 30 46 - 1 48 15 - 2 32 43 - 1 46 18 -0.04 - 45 0 0 - 2 16 36 19 47 6.3 86 245 17 - 2 37 51 - 1 55 21 - 2 39 49 - 1 53 24 -0.04 - 44 0 0 - 2 23 37 19 47 10.4 85 251 16 - 2 44 52 - 2 2 22 - 2 46 49 - 2 0 25 -0.04 - 43 0 0 - 2 30 32 19 47 14.5 84 255 15 - 2 51 47 - 2 9 18 - 2 53 44 - 2 7 20 -0.04 - 42 0 0 - 2 37 22 19 47 18.6 83 258 14 - 2 58 37 - 2 16 8 - 3 0 34 - 2 14 11 -0.04 - 41 0 0 - 2 44 7 19 47 22.6 82 261 13 - 3 5 21 - 2 22 52 - 3 7 18 - 2 20 55 -0.04 - 40 0 0 - 2 50 45 19 47 26.7 81 262 12 - 3 11 59 - 2 29 31 - 3 13 56 - 2 27 34 -0.04 - 39 0 0 - 2 57 18 19 47 30.8 80 264 11 - 3 18 32 - 2 36 4 - 3 20 29 - 2 34 7 -0.04 - 38 0 0 - 3 3 45 19 47 34.8 79 265 10 - 3 24 59 - 2 42 32 - 3 26 56 - 2 40 35 -0.04 - 37 0 0 - 3 10 6 19 47 38.9 78 266 9 - 3 31 19 - 2 48 53 - 3 33 16 - 2 46 56 -0.04 - 36 0 0 - 3 16 21 19 47 42.9 77 266 8 - 3 37 34 - 2 55 8 - 3 39 31 - 2 53 11 -0.04 - 35 0 0 - 3 22 29 19 47 46.9 76 267 7 - 3 43 42 - 3 1 16 - 3 45 39 - 2 59 19 -0.04 - 34 0 0 - 3 28 32 19 47 50.8 75 267 6 - 3 49 44 - 3 7 19 - 3 51 41 - 3 5 22 -0.04 - 33 0 0 - 3 34 27 19 47 54.8 74 268 5 - 3 55 39 - 3 13 15 - 3 57 36 - 3 11 18 -0.04 - 32 0 0 - 3 40 16 19 47 58.7 73 268 4 - 4 1 28 - 3 19 4 - 4 3 25 - 3 17 7 -0.04 - 31 0 0 - 3 45 58 19 48 2.7 72 269 3 - 4 7 10 - 3 24 46 - 4 9 7 - 3 22 49 -0.04 - 30 0 0 - 3 51 34 19 48 6.5 71 269 2 - 4 12 45 - 3 30 22 - 4 14 42 - 3 28 25 -0.04 - 29 0 0 - 3 57 2 19 48 10.4 70 269 1 - 4 18 14 - 3 35 50 - 4 20 10 - 3 33 54 -0.04 - 28 0 0 - 4 2 24 19 48 14.3 69 269 0 - 4 23 35 - 3 41 12 - 4 25 32 - 3 39 15 -0.04 - 27 0 0 - 4 7 38 19 48 18.1 68 270 -1 - 4 28 49 - 3 46 27 - 4 30 46 - 3 44 30 -0.04 - 26 0 0 - 4 12 45 19 48 21.8 67 270 -2 - 4 33 56 - 3 51 34 - 4 35 53 - 3 49 37 -0.04 - 25 0 0 - 4 17 45 19 48 25.6 66 270 -3 - 4 38 55 - 3 56 34 - 4 40 52 - 3 54 37 -0.04 - 24 0 0 - 4 22 37 19 48 29.3 65 270 -4 - 4 43 48 - 4 1 27 - 4 45 44 - 3 59 30 -0.04 - 23 0 0 - 4 27 22 19 48 33.0 64 270 -5 - 4 48 32 - 4 6 12 - 4 50 29 - 4 4 15 -0.04 - 22 0 0 - 4 31 59 19 48 36.7 63 270 -6 - 4 53 9 - 4 10 49 - 4 55 6 - 4 8 53 -0.04 - 21 0 0 - 4 36 29 19 48 40.3 62 270 -6 - 4 57 39 - 4 15 19 - 4 59 36 - 4 13 22 -0.04 - 20 0 0 - 4 40 51 19 48 43.9 61 270 -7 - 5 2 1 - 4 19 41 - 5 3 57 - 4 17 45 -0.04 - 19 0 0 - 4 45 5 19 48 47.4 60 270 -8 - 5 6 15 - 4 23 56 - 5 8 11 - 4 21 59 -0.04 - 18 0 0 - 4 49 12 19 48 51.0 59 270 -9 - 5 10 21 - 4 28 2 - 5 12 17 - 4 26 6 -0.04 - 17 0 0 - 4 53 10 19 48 54.4 58 270 -10 - 5 14 19 - 4 32 1 - 5 16 16 - 4 30 4 -0.04 - 16 0 0 - 4 57 0 19 48 57.9 57 270 -11 - 5 18 9 - 4 35 51 - 5 20 6 - 4 33 55 -0.04 - 15 0 0 - 5 0 43 19 49 1.3 56 270 -12 - 5 21 51 - 4 39 34 - 5 23 48 - 4 37 37 -0.04 - 14 0 0 - 5 4 17 19 49 4.6 55 270 -13 - 5 25 25 - 4 43 8 - 5 27 22 - 4 41 12 -0.04 - 13 0 0 - 5 7 43 19 49 7.9 54 270 -14 - 5 28 51 - 4 46 34 - 5 30 48 - 4 44 38 -0.04 - 12 0 0 - 5 11 1 19 49 11.2 53 270 -15 - 5 32 9 - 4 49 52 - 5 34 5 - 4 47 56 -0.04 - 11 0 0 - 5 14 10 19 49 14.4 52 270 -16 - 5 35 18 - 4 53 2 - 5 37 14 - 4 51 5 -0.04 - 10 0 0 - 5 17 11 19 49 17.6 51 270 -17 - 5 38 19 - 4 56 3 - 5 40 15 - 4 54 6 -0.04 - 9 0 0 - 5 20 4 19 49 20.7 50 270 -18 - 5 41 11 - 4 58 56 - 5 43 8 - 4 56 59 -0.04 - 8 0 0 - 5 22 48 19 49 23.8 49 270 -19 - 5 43 55 - 5 1 40 - 5 45 52 - 4 59 44 -0.04 - 7 0 0 - 5 25 24 19 49 26.8 48 270 -20 - 5 46 31 - 5 4 16 - 5 48 28 - 5 2 20 -0.04 - 6 0 0 - 5 27 51 19 49 29.8 47 270 -21 - 5 48 58 - 5 6 43 - 5 50 55 - 5 4 47 -0.04 - 5 0 0 - 5 30 10 19 49 32.8 46 270 -22 - 5 51 17 - 5 9 2 - 5 53 13 - 5 7 6 -0.04 - 4 0 0 - 5 32 20 19 49 35.7 45 270 -23 - 5 53 27 - 5 11 12 - 5 55 23 - 5 9 16 -0.04 - 3 0 0 - 5 34 21 19 49 38.5 44 270 -24 - 5 55 28 - 5 13 14 - 5 57 24 - 5 11 17 -0.04 - 2 0 0 - 5 36 14 19 49 41.3 43 270 -25 - 5 57 21 - 5 15 7 - 5 59 17 - 5 13 10 -0.04 - 1 0 0 - 5 37 58 19 49 44.0 42 270 -26 - 5 59 5 - 5 16 51 - 6 1 1 - 5 14 55 -0.04 0 0 0 - 5 39 33 19 49 46.7 41 270 -26 - 6 0 40 - 5 18 26 - 6 2 36 - 5 16 30 -0.04 1 0 0 - 5 41 0 19 49 49.3 40 270 -27 - 6 2 7 - 5 19 53 - 6 4 3 - 5 17 57 -0.04 2 0 0 - 5 42 18 19 49 51.9 39 269 -28 - 6 3 24 - 5 21 11 - 6 5 21 - 5 19 15 -0.04 3 0 0 - 5 43 27 19 49 54.4 38 269 -29 - 6 4 33 - 5 22 20 - 6 6 30 - 5 20 24 -0.04 4 0 0 - 5 44 27 19 49 56.8 37 269 -30 - 6 5 34 - 5 23 21 - 6 7 30 - 5 21 24 -0.04 5 0 0 - 5 45 19 19 49 59.2 36 269 -31 - 6 6 25 - 5 24 12 - 6 8 22 - 5 22 16 -0.04 6 0 0 - 5 46 2 19 50 1.5 35 269 -32 - 6 7 8 - 5 24 55 - 6 9 4 - 5 22 59 -0.04 7 0 0 - 5 46 36 19 50 3.8 34 269 -33 - 6 7 42 - 5 25 29 - 6 9 38 - 5 23 33 -0.04 8 0 0 - 5 47 1 19 50 6.0 33 269 -34 - 6 8 7 - 5 25 54 - 6 10 3 - 5 23 58 -0.04 9 0 0 - 5 47 17 19 50 8.2 32 269 -35 - 6 8 23 - 5 26 11 - 6 10 20 - 5 24 14 -0.04 10 0 0 - 5 47 25 19 50 10.3 31 269 -36 - 6 8 31 - 5 26 18 - 6 10 27 - 5 24 22 -0.04 11 0 0 - 5 47 23 19 50 12.3 30 269 -37 - 6 8 29 - 5 26 17 - 6 10 26 - 5 24 20 -0.04 12 0 0 - 5 47 13 19 50 14.3 29 269 -38 - 6 8 19 - 5 26 7 - 6 10 16 - 5 24 10 -0.04 13 0 0 - 5 46 54 19 50 16.2 28 269 -38 - 6 8 1 - 5 25 48 - 6 9 57 - 5 23 51 -0.04 14 0 0 - 5 46 27 19 50 18.1 27 268 -39 - 6 7 33 - 5 25 20 - 6 9 29 - 5 23 24 -0.04 15 0 0 - 5 45 50 19 50 19.8 26 268 -40 - 6 6 57 - 5 24 44 - 6 8 53 - 5 22 47 -0.04 16 0 0 - 5 45 5 19 50 21.6 25 268 -41 - 6 6 11 - 5 23 59 - 6 8 8 - 5 22 2 -0.04 17 0 0 - 5 44 11 19 50 23.2 24 268 -42 - 6 5 18 - 5 23 5 - 6 7 14 - 5 21 8 -0.04 18 0 0 - 5 43 9 19 50 24.8 23 268 -43 - 6 4 15 - 5 22 2 - 6 6 11 - 5 20 6 -0.04 19 0 0 - 5 41 57 19 50 26.3 22 268 -44 - 6 3 4 - 5 20 51 - 6 5 0 - 5 18 54 -0.04 20 0 0 - 5 40 38 19 50 27.8 21 268 -45 - 6 1 44 - 5 19 31 - 6 3 40 - 5 17 34 -0.04 21 0 0 - 5 39 9 19 50 29.2 20 268 -46 - 6 0 16 - 5 18 2 - 6 2 12 - 5 16 6 -0.04 22 0 0 - 5 37 32 19 50 30.5 19 268 -46 - 5 58 39 - 5 16 25 - 6 0 35 - 5 14 29 -0.04 23 0 0 - 5 35 46 19 50 31.8 18 268 -47 - 5 56 53 - 5 14 39 - 5 58 49 - 5 12 43 -0.04 24 0 0 - 5 33 52 19 50 33.0 17 267 -48 - 5 54 59 - 5 12 45 - 5 56 55 - 5 10 49 -0.04 25 0 0 - 5 31 50 19 50 34.1 16 267 -49 - 5 52 56 - 5 10 42 - 5 54 53 - 5 8 46 -0.04 26 0 0 - 5 29 38 19 50 35.1 15 267 -50 - 5 50 46 - 5 8 31 - 5 52 42 - 5 6 35 -0.04 27 0 0 - 5 27 19 19 50 36.1 14 267 -51 - 5 48 26 - 5 6 12 - 5 50 23 - 5 4 15 -0.04 28 0 0 - 5 24 51 19 50 37.0 13 267 -52 - 5 45 58 - 5 3 44 - 5 47 55 - 5 1 47 -0.04 29 0 0 - 5 22 15 19 50 37.9 12 267 -52 - 5 43 22 - 5 1 7 - 5 45 19 - 4 59 11 -0.04 30 0 0 - 5 19 31 19 50 38.7 11 267 -53 - 5 40 38 - 4 58 23 - 5 42 35 - 4 56 26 -0.04 31 0 0 - 5 16 38 19 50 39.4 10 267 -54 - 5 37 46 - 4 55 30 - 5 39 42 - 4 53 34 -0.04 32 0 0 - 5 13 38 19 50 40.0 9 267 -55 - 5 34 45 - 4 52 29 - 5 36 42 - 4 50 33 -0.04 33 0 0 - 5 10 29 19 50 40.6 8 267 -56 - 5 31 37 - 4 49 20 - 5 33 33 - 4 47 24 -0.04 34 0 0 - 5 7 12 19 50 41.1 7 267 -56 - 5 28 20 - 4 46 4 - 5 30 17 - 4 44 7 -0.04 35 0 0 - 5 3 47 19 50 41.5 6 266 -57 - 5 24 56 - 4 42 39 - 5 26 52 - 4 40 42 -0.04 36 0 0 - 5 0 15 19 50 41.9 5 266 -58 - 5 21 23 - 4 39 6 - 5 23 20 - 4 37 9 -0.04 37 0 0 - 4 56 34 19 50 42.2 4 266 -59 - 5 17 43 - 4 35 25 - 5 19 39 - 4 33 29 -0.04 38 0 0 - 4 52 46 19 50 42.4 3 266 -60 - 5 13 55 - 4 31 37 - 5 15 51 - 4 29 40 -0.03 39 0 0 - 4 48 50 19 50 42.6 2 266 -60 - 5 9 59 - 4 27 41 - 5 11 56 - 4 25 44 -0.03 40 0 0 - 4 44 47 19 50 42.7 1 266 -61 - 5 5 56 - 4 23 37 - 5 7 52 - 4 21 40 -0.02 Uncertainty in time = +/- 2 secs Prediction of 2023 Jul 15.2 Data for the target star ------------------------ * name: UCAC4 431-054623 * constellation : Leo * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 11 16 19.9285 DE: -03 51 09.634 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 11 16 19.9285 DE: -03 51 09.634 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.400,0.300) * V mag [mag]: 11.7 * B mag [mag]: 11.9 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (1031) Arctica asteroid class: approx. diameter [km]: 78 approx. diameter ["]: 0.035 distance from Earth [AU]: 3.04720 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#65 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): 0.019", 0.001", 99.124° remarks: * orbital elements for (1031)Arctica : Mean anomaly = 18.6559876661 deg Arg. of pericenter = 310.3850650429 deg Long. of node = 218.6195011247 deg Inclination = 17.6381787938 deg Eccentricity = 0.0600666914 Semimajor axis = 3.0465945722 AU Perihelion dist = 2.8635957161 AU Mag: H = 9.53, G = 0.15 Epoch of elements : MJD 60493.82421550 TDT (2024 Jul 02.8242) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#652023Apr24,2.81,2024,7,2,19.781167,0.004342,0.037184,15.498763,-1.854379,0.004752,-0.002320,0.000000,0.000000 -48.6629,-3.9859,-115.65,22.95,False UCAC4 431-054623,11.27220240,-3.8526764,11.88,11.66,11.54,0.0,4,K,11.29282090,-3.9858586,3.61,3.29,0,0,0 1031,Arctica,15.23,77.746,3.0472,0,0,2.990,-5.36,,3.8,0 0,18.5032,2024,7,2,310.3851,218.6195,17.6382,0.06007,3.04659,2.86360,9.53,5.0,0.15 1.046,0.0190,0.0014,99,0.0016,Known errors,2.22,0,-1,-1 20240702_054623,60140.18 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 04:20 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org