IOTA/IOTA-ES occultation update for (4369) Seifert / UCAC4 351-167082 event on 2024 Sep 12, 22:02 UT Visible from Summary ------- On 2024 Sep 12 UT, the 15.94868742484 km diameter asteroid (4369) Seifert will occult a 11.9 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 4.25 mag to 16.11 mag (the magnitude of the asteroid) for at most 2.650 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: 96 * date and approx. time of event: 2024 Sep 12, 21:45 - 2024 Sep 12, 22:20 * geocentric midpoint of event [JD]: 2460566.41865954 * magnitude of target star: 11.88 * magnitude drop [mag]: 4.25 * estimated maximum duration [s]: 2.650 * Moon: 67 % sunlit, 10° distance * Sun: 114° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 16 * 1 sigma uncertainty interval [path widths]: +/- 0.42 * 1 sigma uncertainty interval [seconds]: +/- 3.2 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.016, +/- 0.007) * 1 sigma uncertainty ellipse (major, minor, PA): (0.017", 0.003", 67°) * approx speed of asteroid's shadow [km/s]: 6.0583 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 351-167082 by 4369 Seifert on 2024 Sep 12 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 -145 0 0 -47 36 22 21 45 41.1 1 119 39 -47 41 29 -47 31 16 -47 45 46 -47 26 59 .... -144 0 0 -47 58 59 21 45 41.4 1 119 38 -48 4 4 -47 53 54 -48 8 19 -47 49 39 0.26 -143 0 0 -48 20 54 21 45 41.9 2 118 38 -48 25 57 -48 15 51 -48 30 11 -48 11 38 0.25 -142 0 0 -48 42 9 21 45 42.5 3 117 37 -48 47 11 -48 37 8 -48 51 23 -48 32 56 0.24 -141 0 0 -49 2 44 21 45 43.3 4 116 37 -49 7 44 -48 57 45 -49 11 55 -48 53 34 0.23 -140 0 0 -49 22 40 21 45 44.3 4 116 37 -49 27 38 -49 17 42 -49 31 48 -49 13 32 0.23 -139 0 0 -49 41 57 21 45 45.5 5 115 36 -49 46 53 -49 37 1 -49 51 2 -49 32 52 0.23 -138 0 0 -50 0 36 21 45 46.8 6 114 36 -50 5 30 -49 55 41 -50 9 38 -49 51 34 0.23 -137 0 0 -50 18 37 21 45 48.3 7 113 35 -50 23 30 -50 13 44 -50 27 36 -50 9 38 0.23 -136 0 0 -50 36 1 21 45 49.9 7 112 35 -50 40 53 -50 31 9 -50 44 57 -50 27 5 0.22 -135 0 0 -50 52 49 21 45 51.7 8 112 34 -50 57 39 -50 47 59 -51 1 42 -50 43 55 0.22 -134 0 0 -51 9 1 21 45 53.6 9 111 34 -51 13 49 -51 4 12 -51 17 52 -51 0 10 0.22 -133 0 0 -51 24 37 21 45 55.6 9 110 34 -51 29 25 -51 19 50 -51 33 26 -51 15 49 0.22 -132 0 0 -51 39 39 21 45 57.7 10 109 33 -51 44 25 -51 34 53 -51 48 25 -51 30 53 0.22 -131 0 0 -51 54 7 21 46 0.0 11 109 33 -51 58 51 -51 49 22 -52 2 50 -51 45 23 0.22 -130 0 0 -52 8 1 21 46 2.4 11 108 32 -52 12 44 -52 3 17 -52 16 42 -51 59 20 0.22 -129 0 0 -52 21 21 21 46 4.9 12 107 32 -52 26 3 -52 16 39 -52 30 0 -52 12 42 0.22 -128 0 0 -52 34 9 21 46 7.6 13 106 31 -52 38 50 -52 29 28 -52 42 46 -52 25 33 0.21 -127 0 0 -52 46 25 21 46 10.3 13 105 31 -52 51 5 -52 41 45 -52 54 59 -52 37 50 0.21 -126 0 0 -52 58 8 21 46 13.2 14 105 31 -53 2 47 -52 53 30 -53 6 41 -52 49 36 0.21 -125 0 0 -53 9 21 21 46 16.2 15 104 30 -53 13 58 -53 4 43 -53 17 51 -53 0 50 0.21 -124 0 0 -53 20 2 21 46 19.2 15 103 30 -53 24 39 -53 15 25 -53 28 31 -53 11 34 0.21 -123 0 0 -53 30 13 21 46 22.4 16 102 29 -53 34 49 -53 25 37 -53 38 40 -53 21 46 0.21 -122 0 0 -53 39 53 21 46 25.7 16 101 29 -53 44 28 -53 35 19 -53 48 19 -53 31 28 0.21 -121 0 0 -53 49 4 21 46 29.0 17 100 28 -53 53 38 -53 44 30 -53 57 28 -53 40 41 0.21 -120 0 0 -53 57 45 21 46 32.5 18 100 28 -54 2 18 -53 53 12 -54 6 7 -53 49 23 0.21 -119 0 0 -54 5 57 21 46 36.1 18 99 28 -54 10 29 -54 1 25 -54 14 18 -53 57 37 0.21 -118 0 0 -54 13 40 21 46 39.7 19 98 27 -54 18 12 -54 9 9 -54 21 59 -54 5 21 0.21 -117 0 0 -54 20 55 21 46 43.5 20 97 27 -54 25 25 -54 16 24 -54 29 12 -54 12 37 0.21 -116 0 0 -54 27 41 21 46 47.4 20 96 26 -54 32 11 -54 23 11 -54 35 57 -54 19 24 0.21 -115 0 0 -54 33 59 21 46 51.3 21 95 26 -54 38 28 -54 29 30 -54 42 14 -54 25 44 0.20 -114 0 0 -54 39 49 21 46 55.3 21 95 25 -54 44 18 -54 35 20 -54 48 3 -54 31 35 0.20 -113 0 0 -54 45 12 21 46 59.5 22 94 25 -54 49 40 -54 40 44 -54 53 25 -54 36 59 0.20 -112 0 0 -54 50 7 21 47 3.7 23 93 24 -54 54 35 -54 45 39 -54 58 19 -54 41 55 0.20 -111 0 0 -54 54 35 21 47 8.0 23 92 24 -54 59 2 -54 50 8 -55 2 46 -54 46 24 0.20 -110 0 0 -54 58 36 21 47 12.4 24 91 24 -55 3 2 -54 54 9 -55 6 46 -54 50 25 0.20 -109 0 0 -55 2 10 21 47 16.9 24 90 23 -55 6 36 -54 57 43 -55 10 19 -54 54 0 0.20 -108 0 0 -55 5 17 21 47 21.5 25 89 23 -55 9 43 -55 0 51 -55 13 26 -54 57 8 0.20 -107 0 0 -55 7 57 21 47 26.2 25 89 22 -55 12 23 -55 3 31 -55 16 6 -54 59 48 0.20 -106 0 0 -55 10 11 21 47 31.0 26 88 22 -55 14 36 -55 5 45 -55 18 19 -55 2 3 0.20 -105 0 0 -55 11 58 21 47 35.8 27 87 21 -55 16 23 -55 7 33 -55 20 6 -55 3 50 0.20 -104 0 0 -55 13 19 21 47 40.8 27 86 21 -55 17 44 -55 8 53 -55 21 26 -55 5 11 0.20 -103 0 0 -55 14 13 21 47 45.9 28 85 21 -55 18 38 -55 9 48 -55 22 20 -55 6 6 0.20 -102 0 0 -55 14 40 21 47 51.0 28 84 20 -55 19 5 -55 10 15 -55 22 48 -55 6 33 0.20 -101 0 0 -55 14 41 21 47 56.3 29 83 20 -55 19 6 -55 10 17 -55 22 49 -55 6 34 0.20 -100 0 0 -55 14 16 21 48 1.6 30 83 19 -55 18 41 -55 9 51 -55 22 23 -55 6 9 0.20 - 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86 0 0 -54 20 49 21 49 28.2 38 70 13 -54 25 19 -54 16 19 -54 29 6 -54 12 33 0.19 - 85 0 0 -54 13 28 21 49 35.3 38 69 12 -54 17 59 -54 8 58 -54 21 46 -54 5 11 0.19 - 84 0 0 -54 5 37 21 49 42.6 39 68 12 -54 10 9 -54 1 6 -54 13 57 -53 57 18 0.19 - 83 0 0 -53 57 16 21 49 50.0 40 67 11 -54 1 49 -53 52 44 -54 5 37 -53 48 56 0.19 - 82 0 0 -53 48 24 21 49 57.5 40 66 11 -53 52 58 -53 43 51 -53 56 47 -53 40 2 0.19 - 81 0 0 -53 39 1 21 50 5.2 41 66 10 -53 43 36 -53 34 27 -53 47 25 -53 30 38 0.19 - 80 0 0 -53 29 7 21 50 13.1 41 65 10 -53 33 42 -53 24 32 -53 37 33 -53 20 41 0.19 - 79 0 0 -53 18 40 21 50 21.1 42 64 9 -53 23 16 -53 14 4 -53 27 8 -53 10 13 0.19 - 78 0 0 -53 7 41 21 50 29.3 43 63 8 -53 12 18 -53 3 4 -53 16 11 -52 59 12 0.19 - 77 0 0 -52 56 8 21 50 37.7 43 62 8 -53 0 47 -52 51 30 -53 4 40 -52 47 37 0.19 - 76 0 0 -52 44 2 21 50 46.2 44 61 7 -52 48 42 -52 39 23 -52 52 36 -52 35 29 0.18 - 75 0 0 -52 31 22 21 50 54.9 45 60 7 -52 36 2 -52 26 41 -52 39 58 -52 22 46 0.18 - 74 0 0 -52 18 6 21 51 3.8 45 59 6 -52 22 48 -52 13 24 -52 26 44 -52 9 28 0.18 - 73 0 0 -52 4 15 21 51 12.9 46 58 6 -52 8 58 -51 59 32 -52 12 56 -51 55 34 0.18 - 72 0 0 -51 49 47 21 51 22.2 47 57 5 -51 54 32 -51 45 2 -51 58 30 -51 41 4 0.18 - 71 0 0 -51 34 42 21 51 31.7 47 56 5 -51 39 28 -51 29 56 -51 43 28 -51 25 57 0.18 - 70 0 0 -51 19 0 21 51 41.4 48 55 4 -51 23 47 -51 14 12 -51 27 48 -51 10 11 0.18 - 69 0 0 -51 2 39 21 51 51.4 49 54 3 -51 7 28 -50 57 50 -51 11 30 -50 53 47 0.18 - 68 0 0 -50 45 38 21 52 1.5 49 53 3 -50 50 29 -50 40 47 -50 54 32 -50 36 44 0.18 - 67 0 0 -50 27 57 21 52 11.9 50 52 2 -50 32 49 -50 23 5 -50 36 55 -50 19 0 0.18 - 66 0 0 -50 9 35 21 52 22.5 51 51 2 -50 14 29 -50 4 41 -50 18 36 -50 0 35 0.18 - 65 0 0 -49 50 31 21 52 33.4 52 50 1 -49 55 27 -49 45 35 -49 59 35 -49 41 27 0.18 - 64 0 0 -49 30 44 21 52 44.6 52 49 0 -49 35 42 -49 25 47 -49 39 51 -49 21 37 0.18 - 63 0 0 -49 10 13 21 52 55.9 53 48 0 -49 15 13 -49 5 14 -49 19 24 -49 1 3 0.18 - 62 0 0 -48 48 58 21 53 7.6 54 47 -1 -48 53 59 -48 43 56 -48 58 12 -48 39 44 0.18 - 61 0 0 -48 26 56 21 53 19.6 55 46 -2 -48 31 59 -48 21 53 -48 36 14 -48 17 38 0.18 - 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21 0 0 -20 21 49 22 6 21.4 74 268 -40 -20 28 26 -20 15 12 -20 33 59 -20 9 40 0.21 - 20 0 0 -19 19 13 22 6 47.8 73 265 -41 -19 25 51 -19 12 36 -19 31 25 -19 7 2 0.21 - 19 0 0 -18 16 3 22 7 14.3 72 262 -43 -18 22 41 -18 9 25 -18 28 16 -18 3 51 0.21 - 18 0 0 -17 12 22 22 7 40.7 70 259 -44 -17 19 1 -17 5 44 -17 24 36 -17 0 9 0.21 - 17 0 0 -16 8 16 22 8 7.2 69 256 -45 -16 14 55 -16 1 37 -16 20 30 -15 56 3 0.22 - 16 0 0 -15 3 49 22 8 33.5 68 254 -46 -15 10 28 -14 57 10 -15 16 3 -14 51 35 0.22 - 15 0 0 -13 59 6 22 8 59.7 66 252 -48 -14 5 45 -13 52 27 -14 11 20 -13 46 53 0.22 - 14 0 0 -12 54 11 22 9 25.7 65 250 -49 -13 0 50 -12 47 33 -13 6 25 -12 41 59 0.22 - 13 0 0 -11 49 11 22 9 51.5 64 249 -50 -11 55 49 -11 42 33 -12 1 23 -11 37 0 0.22 - 12 0 0 -10 44 10 22 10 17.0 62 247 -51 -10 50 47 -10 37 32 -10 56 20 -10 31 59 0.22 - 11 0 0 - 9 39 12 22 10 42.2 61 246 -52 - 9 45 48 - 9 32 36 - 9 51 21 - 9 27 4 0.23 - 10 0 0 - 8 34 23 22 11 7.1 59 245 -54 - 8 40 58 - 8 27 48 - 8 46 30 - 8 22 17 0.23 - 9 0 0 - 7 29 47 22 11 31.6 58 244 -55 - 7 36 21 - 7 23 14 - 7 41 52 - 7 17 44 0.23 - 8 0 0 - 6 25 30 22 11 55.6 57 243 -56 - 6 32 3 - 6 18 58 - 6 37 32 - 6 13 29 0.23 - 7 0 0 - 5 21 35 22 12 19.1 55 242 -57 - 5 28 6 - 5 15 5 - 5 33 34 - 5 9 37 0.23 - 6 0 0 - 4 18 8 22 12 42.2 54 242 -58 - 4 24 37 - 4 11 39 - 4 30 3 - 4 6 13 0.23 - 5 0 0 - 3 15 11 22 13 4.8 52 241 -59 - 3 21 39 - 3 8 45 - 3 27 3 - 3 3 20 0.23 - 4 0 0 - 2 12 50 22 13 26.7 51 241 -60 - 2 19 15 - 2 6 25 - 2 24 38 - 2 1 3 0.24 - 3 0 0 - 1 11 7 22 13 48.2 49 240 -61 - 1 17 30 - 1 4 45 - 1 22 52 - 0 59 24 0.24 - 2 0 0 - 0 10 7 22 14 9.0 48 240 -62 - 0 16 27 - 0 3 46 - 0 21 47 0 1 33 0.24 - 1 0 0 0 50 9 22 14 29.2 46 239 -63 0 43 50 0 56 27 0 38 33 1 1 44 0.24 0 0 0 1 49 36 22 14 48.8 45 239 -64 1 43 20 1 55 52 1 38 5 2 1 6 0.24 1 0 0 2 48 13 22 15 7.7 44 239 -65 2 41 59 2 54 26 2 36 46 2 59 38 0.24 2 0 0 3 45 56 22 15 26.0 42 239 -66 3 39 45 3 52 7 3 34 34 3 57 17 0.24 3 0 0 4 42 44 22 15 43.6 41 239 -66 4 36 36 4 48 52 4 31 27 4 54 0 0.24 4 0 0 5 38 35 22 16 0.6 39 239 -67 5 32 30 5 44 41 5 27 23 5 49 47 0.24 5 0 0 6 33 28 22 16 16.9 38 238 -68 6 27 25 6 39 30 6 22 21 6 44 34 0.25 6 0 0 7 27 20 22 16 32.6 37 238 -68 7 21 20 7 33 20 7 16 18 7 38 22 0.25 7 0 0 8 20 11 22 16 47.6 35 238 -69 8 14 14 8 26 9 8 9 14 8 31 8 0.25 8 0 0 9 12 0 22 17 2.0 34 238 -69 9 6 6 9 17 55 9 1 8 9 22 52 0.25 9 0 0 10 2 46 22 17 15.7 33 239 -69 9 56 54 10 8 38 9 51 59 10 13 33 0.25 10 0 0 10 52 29 22 17 28.8 31 239 -69 10 46 39 10 58 17 10 41 46 11 3 10 0.25 11 0 0 11 41 7 22 17 41.2 30 239 -70 11 35 20 11 46 53 11 30 30 11 51 43 0.25 12 0 0 12 28 41 22 17 53.1 29 239 -70 12 22 57 12 34 24 12 18 9 12 39 12 0.25 13 0 0 13 15 10 22 18 4.3 27 239 -70 13 9 29 13 20 51 13 4 43 13 25 37 0.25 14 0 0 14 0 35 22 18 14.9 26 239 -70 13 54 57 14 6 14 13 50 13 14 10 57 0.25 15 0 0 14 44 56 22 18 24.9 25 239 -69 14 39 20 14 50 32 14 34 39 14 55 13 0.25 16 0 0 15 28 13 22 18 34.4 24 240 -69 15 22 40 15 33 46 15 18 0 15 38 25 0.25 17 0 0 16 10 26 22 18 43.3 22 240 -69 16 4 55 16 15 56 16 0 18 16 20 34 0.25 18 0 0 16 51 35 22 18 51.7 21 240 -69 16 46 7 16 57 3 16 41 32 17 1 38 0.25 19 0 0 17 31 42 22 18 59.5 20 240 -68 17 26 16 17 37 8 17 21 43 17 41 41 0.25 20 0 0 18 10 46 22 19 6.8 19 241 -68 18 5 23 18 16 9 18 0 51 18 20 40 0.25 21 0 0 18 48 48 22 19 13.6 18 241 -67 18 43 27 18 54 9 18 38 58 18 58 38 0.25 22 0 0 19 25 49 22 19 19.9 17 241 -67 19 20 31 19 31 8 19 16 3 19 35 35 0.25 23 0 0 20 1 50 22 19 25.7 15 242 -66 19 56 33 20 7 6 19 52 8 20 11 31 0.25 24 0 0 20 36 51 22 19 31.1 14 242 -66 20 31 36 20 42 5 20 27 13 20 46 28 0.25 25 0 0 21 10 52 22 19 36.0 13 242 -65 21 5 40 21 16 4 21 1 18 21 20 26 0.25 26 0 0 21 43 55 22 19 40.5 12 243 -65 21 38 45 21 49 5 21 34 25 21 53 25 0.26 27 0 0 22 16 1 22 19 44.5 11 243 -64 22 10 53 22 21 9 22 6 35 22 25 27 0.26 28 0 0 22 47 10 22 19 48.2 10 243 -63 22 42 4 22 52 16 22 37 47 22 56 32 0.26 29 0 0 23 17 23 22 19 51.4 9 244 -63 23 12 19 23 22 27 23 8 4 23 26 42 0.26 30 0 0 23 46 40 22 19 54.2 8 244 -62 23 41 38 23 51 42 23 37 25 23 55 56 0.26 31 0 0 24 15 4 22 19 56.7 7 245 -61 24 10 3 24 20 4 24 5 51 24 24 16 0.27 32 0 0 24 42 33 22 19 58.7 6 245 -61 24 37 35 24 47 32 24 33 24 24 51 42 0.27 33 0 0 25 9 10 22 20 0.5 5 245 -60 25 4 13 25 14 7 25 0 4 25 18 16 0.28 34 0 0 25 34 55 22 20 1.9 4 246 -59 25 30 0 25 39 50 25 25 52 25 43 57 0.29 35 0 0 25 59 49 22 20 2.9 3 246 -59 25 54 55 26 4 42 25 50 49 26 8 48 0.31 36 0 0 26 23 52 22 20 3.6 2 247 -58 26 19 0 26 28 44 26 14 55 26 32 48 0.35 37 0 0 26 47 5 22 20 4.0 1 247 -57 26 42 15 26 51 55 26 38 11 26 55 59 0.50 Uncertainty in time = +/- 3 secs Prediction of 2023 Jul 15.6 Data for the target star ------------------------ * name: UCAC4 351-167082 * constellation : Sagittarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 19 01 55.8620 DE: -19 54 19.701 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 19 01 55.8620 DE: -19 54 19.701 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 11.9 * B mag [mag]: 12.8 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (4369) Seifert asteroid class: approx. diameter [km]: 16 approx. diameter ["]: 0.014 distance from Earth [AU]: 1.61750 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#56 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): 0.017", 0.003", 67.08° remarks: * orbital elements for (4369)Seifert : Mean anomaly = 317.2906811154 deg Arg. of pericenter = 77.0326037759 deg Long. of node = 299.2827559473 deg Inclination = 11.8280165572 deg Eccentricity = 0.2513591790 Semimajor axis = 2.6099057229 AU Perihelion dist = 1.9538819630 AU Mag: H = 12.19, G = 0.15 Epoch of elements : MJD 60565.91865933 TDT (2024 Sep 12.9187) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#562023Apr24,2.65,2024,9,12,22.047829,0.124094,-0.148228,2.620652,2.196623,0.004910,0.000435,0.000000,0.000000 -37.2660,-19.8704,-151.73,3.71,False UCAC4 351-167082,19.03218392,-19.9054724,12.75,11.88,11.41,0.1,0,,19.05661097,-19.8704368,4.25,4.27,0,0,0 4369,Seifert,16.11,16.066,1.6175,0,0,1.011,11.94,,1.6,0 0,317.0759,2024,9,12,77.0326,299.2828,11.8280,0.25136,2.60991,1.95388,12.19,5.0,0.15 1.419,0.0170,0.0030,67,0.0057,Known errors,0.84,0,-1,-1 20240912_167082,60140.56 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 13:24 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org