IOTA/IOTA-ES occultation update for (65803) Didymos / TYC 2452-01843-1 event on 2023 Jan 16, 13:00 UT Visible from N Canada Summary ------- On 2023 Jan 16 UT, the 0.8 km diameter asteroid (65803) Didymos will occult a 11.6 mag star in the constellation Gemini for observers along a path across N Canada. In the case of an occultation, the combined light of the asteroid and the star will drop by 5.48 mag to 17.05 mag (the magnitude of the asteroid) for at most 0.310 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: 2023 Jan 16, 12:35 - 2023 Jan 16, 13:25 * geocentric midpoint of event [JD]: 2459961.04186079 * magnitude of target star: 11.58 * magnitude drop [mag]: 5.48 * estimated maximum duration [s]: 0.310 * Moon: 36 % sunlit, 115° distance * Sun: 168° distance * rough path description: N Canada Additional comments ------------------- short duration The occultation path -------------------- * approximate projected width [km]: 1 * 1 sigma uncertainty interval [path widths]: +/- 0.14 * 1 sigma uncertainty interval [seconds]: +/- 0.1 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.001, +/- 0.000) * 1 sigma uncertainty ellipse (major, minor, PA): (0.001", 0.000", 86°) * approx speed of asteroid's shadow [km/s]: 2.5108 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 2452-01843-1 by 65803 Didymos on 2023 Jan 16 Centre Star Star Sun Path Limit1 Path Limit2 Error Limit1 Error Limit2 Alt E. Longitude Latitude U.T. Alt Az Alt Crn o ' " o ' " h m s o o o o ' " o ' " o ' " o ' " o ' " o ' " o ' " o ' " Longitude Latitude Longitude Latitude Longitude Latitude Longitude Latitude - 74 34 4 40 44 52 12 36 19.0 1 312 2 - 74 17 13 40 33 37 - 74 46 5 40 52 48 - 74 10 13 40 28 53 - 74 48 58 40 54 41 .... - 78 24 5 43 29 9 12 36 33.4 5 309 -2 - 78 21 39 43 27 52 - 78 26 30 43 30 25 - 78 20 58 43 27 31 - 78 27 10 43 30 46 -0.80 - 80 16 6 44 51 39 12 36 47.8 6 308 -4 - 80 14 15 44 50 47 - 80 17 55 44 52 31 - 80 13 45 44 50 33 - 80 18 26 44 52 45 -1.15 - 81 43 5 45 56 43 12 37 2.1 8 307 -5 - 81 41 31 45 56 3 - 81 44 40 45 57 23 - 81 41 5 45 55 51 - 81 45 6 45 57 34 -1.21 - 82 57 7 46 52 41 12 37 16.5 9 306 -6 - 82 55 41 46 52 7 - 82 58 32 46 53 15 - 82 55 18 46 51 58 - 82 58 55 46 53 24 -1.24 - 84 2 51 47 42 49 12 37 30.9 10 305 -7 - 84 1 32 47 42 20 - 84 4 10 47 43 18 - 84 1 10 47 42 12 - 84 4 32 47 43 26 -1.26 - 85 2 44 48 28 48 12 37 45.3 11 304 -8 - 85 1 29 48 28 23 - 85 3 59 48 29 14 - 85 1 9 48 28 16 - 85 4 19 48 29 21 -1.27 - 85 58 11 49 11 38 12 37 59.7 12 304 -9 - 85 57 0 49 11 16 - 85 59 23 49 12 1 - 85 56 40 49 11 9 - 85 59 42 49 12 8 -1.28 - 86 50 10 49 51 59 12 38 14.1 13 303 -9 - 86 49 2 49 51 39 - 86 51 19 49 52 20 - 86 48 43 49 51 33 - 86 51 38 49 52 26 -1.29 - 87 39 20 50 30 18 12 38 28.5 13 302 -10 - 87 38 13 50 29 59 - 87 40 26 50 30 37 - 87 37 55 50 29 54 - 87 40 45 50 30 42 -1.29 - 88 26 8 51 6 55 12 38 42.9 14 302 -11 - 88 25 3 51 6 37 - 88 27 13 51 7 12 - 88 24 45 51 6 32 - 88 27 31 51 7 17 -1.30 - 89 10 57 51 42 4 12 38 57.3 15 301 -11 - 89 9 54 51 41 48 - 89 12 1 51 42 20 - 89 9 36 51 41 44 - 89 12 18 51 42 24 -1.30 - 89 54 4 52 15 58 12 39 11.7 15 300 -12 - 89 53 2 52 15 43 - 89 55 6 52 16 13 - 89 52 44 52 15 39 - 89 55 24 52 16 17 -1.31 - 90 35 41 52 48 46 12 39 26.1 16 300 -12 - 90 34 40 52 48 32 - 90 36 43 52 49 0 - 90 34 23 52 48 29 - 90 37 0 52 49 4 -1.31 - 91 16 0 53 20 36 12 39 40.5 17 299 -13 - 91 15 0 53 20 23 - 91 17 1 53 20 49 - 91 14 43 53 20 19 - 91 17 18 53 20 52 -1.32 - 91 55 10 53 51 33 12 39 54.9 17 299 -13 - 91 54 10 53 51 21 - 91 56 10 53 51 46 - 91 53 53 53 51 18 - 91 56 26 53 51 49 -1.32 - 92 33 17 54 21 44 12 40 9.3 18 298 -14 - 92 32 18 54 21 32 - 92 34 17 54 21 55 - 92 32 2 54 21 29 - 92 34 33 54 21 58 -1.32 - 93 10 29 54 51 12 12 40 23.7 18 298 -14 - 93 9 30 54 51 1 - 93 11 28 54 51 22 - 93 9 14 54 50 58 - 93 11 44 54 51 25 -1.33 - 93 46 51 55 20 1 12 40 38.1 19 297 -15 - 93 45 53 55 19 51 - 93 47 50 55 20 11 - 93 45 37 55 19 48 - 93 48 6 55 20 14 -1.33 - 94 22 28 55 48 15 12 40 52.5 19 297 -15 - 94 21 30 55 48 5 - 94 23 26 55 48 24 - 94 21 14 55 48 3 - 94 23 42 55 48 27 -1.33 - 94 57 23 56 15 56 12 41 6.9 20 296 -16 - 94 56 25 56 15 47 - 94 58 21 56 16 5 - 94 56 9 56 15 44 - 94 58 37 56 16 7 -1.34 - 95 31 41 56 43 7 12 41 21.3 20 295 -16 - 95 30 43 56 42 58 - 95 32 38 56 43 15 - 95 30 27 56 42 56 - 95 32 54 56 43 17 -1.34 - 96 5 24 57 9 50 12 41 35.7 21 295 -16 - 96 4 26 57 9 42 - 96 6 21 57 9 58 - 96 4 10 57 9 40 - 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45 87 4 19 148 3 1 87 3 21 -1.47 141 31 37 87 3 36 13 5 6.7 33 162 -24 141 29 54 87 3 58 141 33 19 87 3 14 141 29 25 87 4 4 141 33 47 87 3 8 -1.47 135 5 46 87 1 19 13 5 21.1 33 156 -23 135 3 18 87 1 41 135 8 14 87 0 58 135 2 37 87 1 47 135 8 55 87 0 52 -1.47 128 52 17 86 57 3 13 5 35.5 33 149 -23 128 49 9 86 57 24 128 55 24 86 56 43 128 48 17 86 57 30 128 56 16 86 56 37 -1.47 122 57 33 86 50 56 13 5 49.9 33 143 -23 122 53 54 86 51 15 123 1 12 86 50 36 122 52 53 86 51 21 123 2 12 86 50 31 -1.47 117 25 55 86 43 6 13 6 4.3 33 138 -23 117 21 52 86 43 24 117 29 57 86 42 48 117 20 45 86 43 29 117 31 3 86 42 43 -1.47 112 19 38 86 33 45 13 6 18.7 33 132 -23 112 15 20 86 34 2 112 23 56 86 33 28 112 14 9 86 34 6 112 25 6 86 33 23 -1.47 107 39 16 86 23 3 13 6 33.1 33 127 -23 107 34 49 86 23 19 107 43 42 86 22 47 107 33 35 86 23 23 107 44 55 86 22 43 -1.47 103 24 1 86 11 11 13 6 47.5 33 123 -23 103 19 31 86 11 26 103 28 30 86 10 57 103 18 16 86 11 30 103 29 45 86 10 53 -1.47 99 32 20 85 58 19 13 7 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50 83 34 14 13 9 11.5 31 95 -21 76 59 24 83 34 20 77 6 15 83 34 9 76 58 27 83 34 21 77 7 12 83 34 7 -1.46 75 25 5 83 16 15 13 9 25.9 31 94 -21 75 21 46 83 16 20 75 28 23 83 16 10 75 20 52 83 16 21 75 29 18 83 16 9 -1.46 73 53 40 82 57 59 13 9 40.3 31 92 -21 73 50 29 82 58 3 73 56 52 82 57 55 73 49 36 82 58 5 73 57 45 82 57 54 -1.46 72 27 53 82 39 29 13 9 54.7 31 91 -20 72 24 48 82 39 33 72 30 58 82 39 25 72 23 57 82 39 34 72 31 49 82 39 24 -1.46 71 7 6 82 20 45 13 10 9.1 31 89 -20 71 4 7 82 20 48 71 10 4 82 20 42 71 3 18 82 20 49 71 10 54 82 20 41 -1.46 69 50 46 82 1 48 13 10 23.5 31 88 -20 69 47 53 82 1 50 69 53 39 82 1 45 69 47 6 82 1 51 69 54 26 82 1 44 -1.46 68 38 25 81 42 38 13 10 37.9 30 86 -20 68 35 38 81 42 40 68 41 12 81 42 36 68 34 52 81 42 40 68 41 58 81 42 35 -1.46 67 29 38 81 23 16 13 10 52.3 30 85 -20 67 26 57 81 23 18 67 32 20 81 23 14 67 26 12 81 23 18 67 33 5 81 23 14 -1.45 66 24 4 81 3 42 13 11 6.7 30 84 -19 66 21 27 81 3 44 66 26 41 81 3 41 66 20 44 81 3 44 66 27 24 81 3 41 -1.45 65 21 22 80 43 58 13 11 21.1 30 83 -19 65 18 50 80 43 58 65 23 54 80 43 57 65 18 9 80 43 59 65 24 36 80 43 57 -1.45 64 21 17 80 24 2 13 11 35.5 30 82 -19 64 18 49 80 24 2 64 23 44 80 24 1 64 18 9 80 24 2 64 24 25 80 24 1 -1.45 63 23 32 80 3 55 13 11 49.9 29 81 -19 63 21 9 80 3 55 63 25 55 80 3 55 63 20 29 80 3 55 63 26 34 80 3 55 -1.45 62 27 54 79 43 37 13 12 4.3 29 80 -18 62 25 35 79 43 37 62 30 13 79 43 38 62 24 57 79 43 37 62 30 51 79 43 38 -1.45 61 34 12 79 23 9 13 12 18.7 29 79 -18 61 31 56 79 23 8 61 36 27 79 23 10 61 31 19 79 23 8 61 37 4 79 23 10 -1.45 60 42 14 79 2 29 13 12 33.1 29 78 -18 60 40 2 79 2 28 60 44 26 79 2 31 60 39 26 79 2 28 60 45 2 79 2 31 -1.45 59 51 51 78 41 39 13 12 47.5 29 77 -18 59 49 43 78 41 38 59 53 59 78 41 41 59 49 8 78 41 37 59 54 35 78 41 41 -1.45 59 2 55 78 20 38 13 13 1.9 28 76 -17 59 0 50 78 20 36 59 5 0 78 20 40 59 0 15 78 20 36 59 5 34 78 20 41 -1.44 58 15 16 77 59 26 13 13 16.3 28 75 -17 58 13 14 77 59 24 58 17 18 77 59 28 58 12 41 77 59 23 58 17 52 77 59 29 -1.44 57 28 49 77 38 3 13 13 30.7 28 74 -17 57 26 50 77 38 0 57 30 48 77 38 5 57 26 18 77 37 59 57 31 21 77 38 6 -1.44 56 43 27 77 16 28 13 13 45.1 28 73 -17 56 41 31 77 16 25 56 45 23 77 16 31 56 40 59 77 16 24 56 45 55 77 16 32 -1.44 55 59 4 76 54 42 13 13 59.4 27 72 -16 55 57 10 76 54 38 56 0 57 76 54 45 55 56 39 76 54 37 56 1 29 76 54 46 -1.44 55 15 33 76 32 43 13 14 13.8 27 72 -16 55 13 42 76 32 39 55 17 25 76 32 47 55 13 12 76 32 38 55 17 55 76 32 48 -1.44 54 32 52 76 10 32 13 14 28.2 27 71 -16 54 31 3 76 10 28 54 34 40 76 10 36 54 30 33 76 10 27 54 35 10 76 10 37 -1.44 53 50 53 75 48 9 13 14 42.6 27 70 -15 53 49 7 75 48 4 53 52 40 75 48 13 53 48 38 75 48 3 53 53 9 75 48 14 -1.43 53 9 35 75 25 32 13 14 57.0 26 69 -15 53 7 50 75 25 28 53 11 19 75 25 37 53 7 21 75 25 26 53 11 48 75 25 38 -1.43 52 28 51 75 2 42 13 15 11.4 26 69 -15 52 27 9 75 2 37 52 30 33 75 2 47 52 26 41 75 2 36 52 31 2 75 2 49 -1.43 51 48 39 74 39 38 13 15 25.8 26 68 -15 51 46 59 74 39 33 51 50 20 74 39 44 51 46 31 74 39 31 51 50 47 74 39 45 -1.43 51 8 55 74 16 20 13 15 40.2 25 67 -14 51 7 17 74 16 14 51 10 34 74 16 26 51 6 49 74 16 13 51 11 1 74 16 27 -1.43 50 29 36 73 52 46 13 15 54.6 25 66 -14 50 27 59 73 52 40 50 31 13 73 52 53 50 27 32 73 52 39 50 31 39 73 52 54 -1.43 49 50 38 73 28 57 13 16 9.0 25 66 -14 49 49 3 73 28 51 49 52 13 73 29 4 49 48 37 73 28 49 49 52 39 73 29 6 -1.43 49 11 58 73 4 52 13 16 23.4 25 65 -13 49 10 25 73 4 45 49 13 32 73 4 59 49 9 59 73 4 43 49 13 58 73 5 0 -1.42 48 33 34 72 40 29 13 16 37.8 24 64 -13 48 32 2 72 40 22 48 35 7 72 40 36 48 31 37 72 40 20 48 35 32 72 40 38 -1.42 47 55 23 72 15 49 13 16 52.2 24 64 -13 47 53 52 72 15 41 47 56 53 72 15 56 47 53 27 72 15 39 47 57 18 72 15 58 -1.42 47 17 21 71 50 49 13 17 6.6 24 63 -12 47 15 51 71 50 41 47 18 50 71 50 57 47 15 27 71 50 39 47 19 15 71 51 0 -1.42 46 39 26 71 25 30 13 17 21.0 23 62 -12 46 37 58 71 25 22 46 40 54 71 25 39 46 37 33 71 25 19 46 41 18 71 25 41 -1.42 46 1 35 70 59 50 13 17 35.4 23 62 -11 46 0 8 70 59 41 46 3 2 70 59 59 45 59 44 70 59 39 46 3 26 71 0 2 -1.41 45 23 45 70 33 49 13 17 49.8 22 61 -11 45 22 20 70 33 39 45 25 11 70 33 58 45 21 56 70 33 37 45 25 35 70 34 1 -1.41 44 45 55 70 7 24 13 18 4.2 22 60 -11 44 44 30 70 7 14 44 47 20 70 7 34 44 44 6 70 7 11 44 47 43 70 7 36 -1.41 44 8 0 69 40 34 13 18 18.6 22 60 -10 44 6 36 69 40 24 44 9 23 69 40 45 44 6 13 69 40 21 44 9 47 69 40 48 -1.41 43 29 57 69 13 19 13 18 33.0 21 59 -10 43 28 34 69 13 8 43 31 20 69 13 30 43 28 11 69 13 5 43 31 43 69 13 33 -1.41 42 51 45 68 45 35 13 18 47.4 21 58 -9 42 50 23 68 45 24 42 53 7 68 45 47 42 50 0 68 45 21 42 53 30 68 45 50 -1.41 42 13 19 68 17 22 13 19 1.8 20 58 -9 42 11 57 68 17 10 42 14 40 68 17 34 42 11 35 68 17 7 42 15 3 68 17 38 -1.41 41 34 36 67 48 37 13 19 16.2 20 57 -8 41 33 15 67 48 25 41 35 57 67 48 50 41 32 53 67 48 21 41 36 19 67 48 53 -1.40 40 55 33 67 19 18 13 19 30.6 19 56 -8 40 54 12 67 19 5 40 56 53 67 19 32 40 53 50 67 19 1 40 57 15 67 19 35 -1.40 40 16 8 66 49 23 13 19 45.0 19 56 -8 40 14 48 66 49 9 40 17 27 66 49 37 40 14 26 66 49 5 40 17 49 66 49 41 -1.40 39 36 11 66 18 47 13 19 59.4 19 55 -7 39 34 52 66 18 32 39 37 30 66 19 2 39 34 30 66 18 28 39 37 52 66 19 6 -1.40 38 55 41 65 47 27 13 20 13.8 18 54 -6 38 54 22 65 47 12 38 57 0 65 47 43 38 54 0 65 47 8 38 57 22 65 47 47 -1.40 38 14 32 65 15 20 13 20 28.2 18 54 -6 38 13 13 65 15 4 38 15 50 65 15 37 38 12 51 65 15 0 38 16 12 65 15 41 -1.40 37 32 37 64 42 21 13 20 42.6 17 53 -5 37 31 19 64 42 4 37 33 56 64 42 38 37 30 57 64 41 59 37 34 18 64 42 43 -1.40 36 49 50 64 8 24 13 20 57.0 16 52 -5 36 48 32 64 8 6 36 51 9 64 8 42 36 48 10 64 8 1 36 51 31 64 8 47 -1.40 36 6 3 63 33 22 13 21 11.4 16 52 -4 36 4 44 63 33 3 36 7 22 63 33 42 36 4 22 63 32 57 36 7 44 63 33 47 -1.39 35 21 5 62 57 8 13 21 25.8 15 51 -4 35 19 46 62 56 48 35 22 25 62 57 29 35 19 24 62 56 42 35 22 47 62 57 35 -1.39 34 34 46 62 19 33 13 21 40.2 15 50 -3 34 33 26 62 19 10 34 36 6 62 19 55 34 33 4 62 19 4 34 36 28 62 20 1 -1.39 33 46 49 61 40 23 13 21 54.6 14 50 -2 33 45 29 61 39 59 33 48 10 61 40 47 33 45 6 61 39 52 33 48 32 61 40 53 -1.40 32 56 58 60 59 24 13 22 9.0 13 49 -1 32 55 36 60 58 58 32 58 20 60 59 49 32 55 13 60 58 51 32 58 42 60 59 57 -1.40 32 4 47 60 16 15 13 22 23.4 12 48 -1 32 3 24 60 15 47 32 6 11 60 16 44 32 3 1 60 15 39 32 6 34 60 16 51 -1.40 31 9 46 59 30 32 13 22 37.8 12 47 0 31 8 20 59 30 1 31 11 12 59 31 2 31 7 57 59 29 52 31 11 35 59 31 11 -1.40 30 11 10 58 41 35 13 22 52.2 11 47 1 30 9 41 58 41 0 30 12 39 58 42 9 30 9 17 58 40 51 30 13 3 58 42 19 -1.41 29 7 54 57 48 31 13 23 6.6 10 46 2 29 6 21 57 47 52 29 9 27 57 49 10 29 5 56 57 47 41 29 9 53 57 49 20 -1.42 27 58 16 56 49 53 13 23 21.0 9 45 3 27 56 36 56 49 7 27 59 55 56 50 38 27 56 9 56 48 55 28 0 22 56 50 50 -1.44 26 39 11 55 43 7 13 23 35.4 7 44 4 26 37 22 55 42 12 26 41 1 55 44 2 26 36 51 55 41 56 26 41 31 55 44 17 -1.48 25 4 15 54 22 48 13 23 49.8 6 42 6 25 2 5 54 21 36 25 6 24 54 24 1 25 1 29 54 21 15 25 6 59 54 24 21 -1.55 22 52 50 52 31 42 13 24 4.2 3 41 8 22 49 40 52 29 37 22 55 58 52 33 46 22 48 47 52 29 3 22 56 49 52 34 19 -1.83 Uncertainty in time = +/- 0 secs Prediction of 2022 Dec 30.0 Data for the target star ------------------------ * name: TYC 2452-01843-1 * constellation : Gemini * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 07 21 14.5760 DE: +30 46 49.443 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 07 21 14.5760 DE: +30 46 49.444 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 11.6 * B mag [mag]: 12.2 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (65803) Didymos asteroid class: asteroid system: multiple bodies approx. diameter [km]: 1 approx. diameter ["]: 0.003 distance from Earth [AU]: 0.34520 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#200 date of fit: 2022 Dec 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): 0.001", 0.000", 85.644° remarks: * orbital elements for (65803)Didymos : Mean anomaly = 40.6180117666 deg Arg. of pericenter = 319.5564889556 deg Long. of node = 72.9920593723 deg Inclination = 3.4141573269 deg Eccentricity = 0.3832924715 Semimajor axis = 1.6425138424 AU Perihelion dist = 1.0129506523 AU Mag: H = 18.15, G = 0.15 Epoch of elements : MJD 59960.54187304 TDT (2023 Jan 16.5419) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#2002022Dec24,0.31,2023,1,16,13.004659,0.098135,0.816762,-1.407062,0.169072,0.000413,-0.000608,0.000001,0.000000 159.9038,30.7369,-12.65,-20.92,False TYC 2452-01843-1,7.35404889,30.7804009,12.20,11.58,11.25,0.0,0,,7.37875446,30.7369418,5.47,5.36,0,0,0 65803,Didymos,17.05,0.8,0.3452,0,0,-2.777,4.27,,0.1,0 Dimorphos,0.2,1.190,0.497100,0.0500,,,,, 0,40.3643,2023,1,16,319.5565,72.9921,3.4142,0.38329,1.64251,1.01295,18.15,5.0,0.15 1.138,0.0006,0.0004,86,0.0004,Known errors,-1.00,-1,-1,-1 20230116_1843-1,59943.05 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2022 Dec 30, 01:12 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org