IOTA/IOTA-ES occultation update for (3273) Drukar / UCAC4 251-188073 event on 2024 Jul 23, 04:17 UT Visible from Summary ------- On 2024 Jul 23 UT, the 30.778 km diameter asteroid (3273) Drukar will occult a 11.2 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 5.45 mag to 16.63 mag (the magnitude of the asteroid) for at most 2.420 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 Jul 23, 04:09 - 2024 Jul 23, 04:26 * geocentric midpoint of event [JD]: 2460514.67908308 * magnitude of target star: 11.19 * magnitude drop [mag]: 5.45 * estimated maximum duration [s]: 2.420 * Moon: 96 % sunlit, 32° distance * Sun: 160° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 31 * 1 sigma uncertainty interval [path widths]: +/- 0.24 * 1 sigma uncertainty interval [seconds]: +/- 3.9 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.029, +/- 0.004) * 1 sigma uncertainty ellipse (major, minor, PA): (0.029", 0.002", 84°) * approx speed of asteroid's shadow [km/s]: 12.7099 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 251-188073 by 3273 Drukar on 2024 Jul 23 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 -161 0 0 - 5 38 24 4 26 10.2 1 130 4 - 5 27 24 - 5 49 24 - 5 22 9 - 5 54 39 .... -160 0 0 - 6 28 16 4 26 10.0 2 130 3 - 6 17 18 - 6 39 13 - 6 12 5 - 6 44 26 -0.01 -159 0 0 - 7 17 29 4 26 9.4 3 130 1 - 7 6 35 - 7 28 23 - 7 1 23 - 7 33 35 -0.07 -158 0 0 - 8 6 3 4 26 8.7 4 130 0 - 7 55 12 - 8 16 54 - 7 50 1 - 8 22 4 -0.09 -157 0 0 - 8 53 57 4 26 7.7 6 129 -1 - 8 43 8 - 9 4 45 - 8 38 0 - 9 9 53 -0.11 -156 0 0 - 9 41 9 4 26 6.4 7 129 -2 - 9 30 23 - 9 51 53 - 9 25 16 - 9 57 0 -0.12 -155 0 0 -10 27 37 4 26 5.0 8 129 -3 -10 16 56 -10 38 19 -10 11 50 -10 43 24 -0.12 -154 0 0 -11 13 23 4 26 3.3 9 129 -5 -11 2 44 -11 24 1 -10 57 40 -11 29 4 -0.13 -153 0 0 -11 58 23 4 26 1.4 11 129 -6 -11 47 48 -12 8 58 -11 42 45 -12 14 0 -0.13 -152 0 0 -12 42 38 4 25 59.3 12 129 -7 -12 32 7 -12 53 10 -12 27 6 -12 58 10 -0.13 -151 0 0 -13 26 8 4 25 57.0 13 128 -8 -13 15 39 -13 36 36 -13 10 40 -13 41 35 -0.13 -150 0 0 -14 8 50 4 25 54.5 14 128 -9 -13 58 25 -14 19 15 -13 53 28 -14 24 12 -0.14 -149 0 0 -14 50 46 4 25 51.8 15 128 -10 -14 40 24 -15 1 7 -14 35 28 -15 6 3 -0.14 -148 0 0 -15 31 54 4 25 48.9 17 128 -11 -15 21 36 -15 42 12 -15 16 41 -15 47 6 -0.14 -147 0 0 -16 12 15 4 25 45.8 18 127 -13 -16 2 0 -16 22 29 -15 57 7 -16 27 22 -0.14 -146 0 0 -16 51 47 4 25 42.6 19 127 -14 -16 41 36 -17 1 59 -16 36 45 -17 6 50 -0.14 -145 0 0 -17 30 32 4 25 39.2 20 127 -15 -17 20 24 -17 40 40 -17 15 34 -17 45 29 -0.14 -144 0 0 -18 8 28 4 25 35.7 21 127 -16 -17 58 23 -18 18 33 -17 53 35 -18 23 21 -0.14 -143 0 0 -18 45 36 4 25 32.0 22 126 -17 -18 35 34 -18 55 37 -18 30 48 -19 0 24 -0.14 -142 0 0 -19 21 56 4 25 28.2 23 126 -18 -19 11 57 -19 31 54 -19 7 12 -19 36 38 -0.14 -141 0 0 -19 57 27 4 25 24.2 25 126 -19 -19 47 32 -20 7 22 -19 42 49 -20 12 5 -0.14 -140 0 0 -20 32 11 4 25 20.1 26 125 -20 -20 22 19 -20 42 2 -20 17 37 -20 46 44 -0.14 -139 0 0 -21 6 6 4 25 15.9 27 125 -21 -20 56 17 -21 15 54 -20 51 37 -21 20 34 -0.14 -138 0 0 -21 39 14 4 25 11.6 28 125 -22 -21 29 28 -21 48 59 -21 24 49 -21 53 37 -0.14 -137 0 0 -22 11 34 4 25 7.2 29 124 -23 -22 1 51 -22 21 16 -21 57 14 -22 25 53 -0.14 -136 0 0 -22 43 6 4 25 2.6 30 124 -24 -22 33 27 -22 52 46 -22 28 51 -22 57 21 -0.14 -135 0 0 -23 13 52 4 24 58.0 31 124 -25 -23 4 16 -23 23 28 -22 59 41 -23 28 3 -0.14 -134 0 0 -23 43 51 4 24 53.2 32 123 -26 -23 34 18 -23 53 25 -23 29 45 -23 57 57 -0.14 -133 0 0 -24 13 4 4 24 48.4 33 123 -27 -24 3 33 -24 22 34 -23 59 2 -24 27 6 -0.14 -132 0 0 -24 41 31 4 24 43.5 34 123 -28 -24 32 3 -24 50 58 -24 27 33 -24 55 28 -0.14 -131 0 0 -25 9 12 4 24 38.5 35 122 -29 -24 59 47 -25 18 36 -24 55 18 -25 23 5 -0.14 -130 0 0 -25 36 8 4 24 33.4 36 122 -30 -25 26 45 -25 45 29 -25 22 18 -25 49 57 -0.14 -129 0 0 -26 2 18 4 24 28.2 37 122 -31 -25 52 59 -26 11 38 -25 48 32 -26 16 4 -0.14 -128 0 0 -26 27 45 4 24 23.0 38 121 -32 -26 18 28 -26 37 2 -26 14 3 -26 41 26 -0.14 -127 0 0 -26 52 27 4 24 17.7 39 121 -33 -26 43 13 -27 1 41 -26 38 49 -27 6 5 -0.14 -126 0 0 -27 16 26 4 24 12.3 40 121 -34 -27 7 14 -27 25 38 -27 2 51 -27 30 0 -0.14 -125 0 0 -27 39 42 4 24 6.9 41 120 -35 -27 30 32 -27 48 51 -27 26 11 -27 53 12 -0.14 -124 0 0 -28 2 14 4 24 1.4 42 120 -35 -27 53 7 -28 11 21 -27 48 47 -28 15 41 -0.14 -123 0 0 -28 24 5 4 23 55.8 43 120 -36 -28 15 0 -28 33 9 -28 10 41 -28 37 28 -0.14 -122 0 0 -28 45 13 4 23 50.2 44 119 -37 -28 36 11 -28 54 15 -28 31 52 -28 58 33 -0.14 -121 0 0 -29 5 40 4 23 44.6 44 119 -38 -28 56 40 -29 14 40 -28 52 22 -29 18 57 -0.14 -120 0 0 -29 25 26 4 23 38.9 45 118 -39 -29 16 28 -29 34 24 -29 12 11 -29 38 40 -0.14 -119 0 0 -29 44 31 4 23 33.1 46 118 -40 -29 35 35 -29 53 27 -29 31 20 -29 57 42 -0.14 -118 0 0 -30 2 56 4 23 27.3 47 118 -41 -29 54 2 -30 11 49 -29 49 47 -30 16 3 -0.14 -117 0 0 -30 20 41 4 23 21.5 48 117 -41 -30 11 49 -30 29 32 -30 7 35 -30 33 46 -0.14 -116 0 0 -30 37 46 4 23 15.6 49 117 -42 -30 28 56 -30 46 36 -30 24 44 -30 50 48 -0.14 -115 0 0 -30 54 12 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0 0 -34 27 1 4 20 38.3 69 113 -62 -34 18 37 -34 35 25 -34 14 37 -34 39 25 -0.13 - 90 0 0 -34 28 43 4 20 31.7 70 113 -62 -34 20 19 -34 37 7 -34 16 19 -34 41 7 -0.13 - 89 0 0 -34 29 53 4 20 25.0 70 113 -63 -34 21 29 -34 38 16 -34 17 29 -34 42 16 -0.13 - 88 0 0 -34 30 29 4 20 18.3 71 114 -64 -34 22 5 -34 38 53 -34 18 5 -34 42 52 -0.13 - 87 0 0 -34 30 32 4 20 11.6 72 114 -65 -34 22 9 -34 38 56 -34 18 9 -34 42 55 -0.13 - 86 0 0 -34 30 2 4 20 4.8 73 115 -65 -34 21 39 -34 38 26 -34 17 39 -34 42 26 -0.13 - 85 0 0 -34 28 59 4 19 58.1 73 115 -66 -34 20 36 -34 37 23 -34 16 36 -34 41 23 -0.13 - 84 0 0 -34 27 23 4 19 51.2 74 116 -67 -34 18 59 -34 35 47 -34 14 59 -34 39 47 -0.13 - 83 0 0 -34 25 14 4 19 44.4 75 117 -67 -34 16 50 -34 33 38 -34 12 50 -34 37 38 -0.13 - 82 0 0 -34 22 32 4 19 37.5 75 118 -68 -34 14 7 -34 30 56 -34 10 7 -34 34 56 -0.13 - 81 0 0 -34 19 16 4 19 30.6 76 119 -69 -34 10 51 -34 27 41 -34 6 51 -34 31 41 -0.13 - 80 0 0 -34 15 27 4 19 23.7 77 120 -69 -34 7 2 -34 23 53 -34 3 1 -34 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59 19 -29 37 16 -30 3 33 -0.14 - 55 0 0 -29 31 42 4 16 20.2 77 215 -78 -29 22 46 -29 40 38 -29 18 30 -29 44 54 -0.14 - 54 0 0 -29 12 20 4 16 12.4 76 216 -78 -29 3 22 -29 21 18 -28 59 5 -29 25 34 -0.14 - 53 0 0 -28 52 18 4 16 4.6 75 218 -78 -28 43 17 -29 1 18 -28 39 0 -29 5 36 -0.14 - 52 0 0 -28 31 36 4 15 56.8 74 219 -77 -28 22 33 -28 40 38 -28 18 15 -28 44 56 -0.14 - 51 0 0 -28 10 13 4 15 49.0 74 220 -77 -28 1 8 -28 19 18 -27 56 49 -28 23 37 -0.14 - 50 0 0 -27 48 9 4 15 41.1 73 221 -76 -27 39 2 -27 57 16 -27 34 42 -28 1 37 -0.14 - 49 0 0 -27 25 24 4 15 33.2 72 222 -76 -27 16 15 -27 34 34 -27 11 53 -27 38 55 -0.14 - 48 0 0 -27 1 58 4 15 25.3 71 222 -75 -26 52 46 -27 11 9 -26 48 23 -27 15 32 -0.14 - 47 0 0 -26 37 49 4 15 17.3 70 223 -74 -26 28 35 -26 47 3 -26 24 11 -26 51 27 -0.14 - 46 0 0 -26 12 58 4 15 9.4 69 224 -74 -26 3 41 -26 22 15 -25 59 16 -26 26 39 -0.14 - 45 0 0 -25 47 24 4 15 1.4 68 224 -73 -25 38 5 -25 56 43 -25 33 39 -26 1 9 -0.14 - 44 0 0 -25 21 8 4 14 53.4 68 224 -72 -25 11 46 -25 30 29 -25 7 18 -25 34 56 -0.14 - 43 0 0 -24 54 7 4 14 45.4 67 225 -72 -24 44 43 -25 3 32 -24 40 14 -25 8 0 -0.14 - 42 0 0 -24 26 24 4 14 37.4 66 225 -71 -24 16 57 -24 35 51 -24 12 26 -24 40 20 -0.14 - 41 0 0 -23 57 56 4 14 29.3 65 225 -70 -23 48 26 -24 7 26 -23 43 55 -24 11 57 -0.14 - 40 0 0 -23 28 44 4 14 21.3 64 225 -69 -23 19 11 -23 38 16 -23 14 39 -23 42 49 -0.14 - 39 0 0 -22 58 47 4 14 13.3 63 226 -68 -22 49 12 -23 8 23 -22 44 38 -23 12 56 -0.14 - 38 0 0 -22 28 6 4 14 5.2 62 226 -68 -22 18 28 -22 37 44 -22 13 52 -22 42 19 -0.14 - 37 0 0 -21 56 40 4 13 57.2 61 226 -67 -21 46 59 -22 6 21 -21 42 22 -22 10 57 -0.14 - 36 0 0 -21 24 28 4 13 49.2 60 226 -66 -21 14 44 -21 34 12 -21 10 6 -21 38 50 -0.14 - 35 0 0 -20 51 32 4 13 41.2 59 226 -65 -20 41 45 -21 1 18 -20 37 5 -21 5 58 -0.14 - 34 0 0 -20 17 49 4 13 33.2 58 226 -64 -20 7 59 -20 27 39 -20 3 18 -20 32 20 -0.14 - 33 0 0 -19 43 21 4 13 25.2 57 226 -63 -19 33 29 -19 53 14 -19 28 46 -19 57 56 -0.14 - 32 0 0 -19 8 8 4 13 17.2 56 226 -62 -18 58 12 -19 18 4 -18 53 28 -19 22 47 -0.14 - 31 0 0 -18 32 9 4 13 9.3 55 226 -61 -18 22 10 -18 42 8 -18 17 25 -18 46 53 -0.14 - 30 0 0 -17 55 24 4 13 1.4 53 226 -60 -17 45 22 -18 5 26 -17 40 35 -18 10 13 -0.14 - 29 0 0 -17 17 54 4 12 53.6 52 226 -59 -17 7 49 -17 27 59 -17 3 0 -17 32 47 -0.14 - 28 0 0 -16 39 38 4 12 45.8 51 226 -58 -16 29 30 -16 49 46 -16 24 40 -16 54 36 -0.14 - 27 0 0 -16 0 37 4 12 38.1 50 226 -57 -15 50 26 -16 10 48 -15 45 35 -16 15 39 -0.14 - 26 0 0 -15 20 51 4 12 30.4 49 226 -56 -15 10 37 -15 31 6 -15 5 44 -15 35 58 -0.14 - 25 0 0 -14 40 21 4 12 22.8 48 226 -55 -14 30 3 -14 50 38 -14 25 9 -14 55 32 -0.14 - 24 0 0 -13 59 6 4 12 15.2 47 226 -54 -13 48 45 -14 9 26 -13 43 49 -14 14 22 -0.15 - 23 0 0 -13 17 7 4 12 7.7 46 226 -53 -13 6 43 -13 27 31 -13 1 46 -13 32 27 -0.15 - 22 0 0 -12 34 25 4 12 0.4 44 226 -52 -12 23 58 -12 44 52 -12 18 59 -12 49 50 -0.15 - 21 0 0 -11 51 0 4 11 53.1 43 225 -50 -11 40 30 -12 1 30 -11 35 30 -12 6 29 -0.15 - 20 0 0 -11 6 53 4 11 45.9 42 225 -49 -10 56 20 -11 17 26 -10 51 18 -11 22 27 -0.15 - 19 0 0 -10 22 4 4 11 38.8 41 225 -48 -10 11 28 -10 32 40 -10 6 25 -10 37 43 -0.15 - 18 0 0 - 9 36 35 4 11 31.9 40 225 -47 - 9 25 56 - 9 47 14 - 9 20 51 - 9 52 18 -0.15 - 17 0 0 - 8 50 26 4 11 25.1 38 225 -46 - 8 39 44 - 9 1 8 - 8 34 38 - 9 6 13 -0.15 - 16 0 0 - 8 3 39 4 11 18.4 37 225 -45 - 7 52 54 - 8 14 23 - 7 47 47 - 8 19 30 -0.15 - 15 0 0 - 7 16 14 4 11 11.8 36 225 -44 - 7 5 26 - 7 27 1 - 7 0 17 - 7 32 9 -0.15 - 14 0 0 - 6 28 12 4 11 5.4 35 225 -42 - 6 17 22 - 6 39 3 - 6 12 12 - 6 44 12 -0.15 - 13 0 0 - 5 39 36 4 10 59.2 33 225 -41 - 5 28 43 - 5 50 29 - 5 23 31 - 5 55 40 -0.15 - 12 0 0 - 4 50 26 4 10 53.1 32 225 -40 - 4 39 30 - 5 1 21 - 4 34 17 - 5 6 33 -0.15 - 11 0 0 - 4 0 43 4 10 47.3 31 225 -39 - 3 49 45 - 4 11 41 - 3 44 31 - 4 16 55 -0.15 - 10 0 0 - 3 10 30 4 10 41.5 30 225 -38 - 2 59 29 - 3 21 31 - 2 54 14 - 3 26 45 -0.15 - 9 0 0 - 2 19 48 4 10 36.0 28 225 -36 - 2 8 45 - 2 30 51 - 2 3 29 - 2 36 7 -0.15 - 8 0 0 - 1 28 39 4 10 30.7 27 225 -35 - 1 17 33 - 1 39 44 - 1 12 16 - 1 45 1 -0.15 - 7 0 0 - 0 37 4 4 10 25.6 26 225 -34 - 0 25 56 - 0 48 12 - 0 20 38 - 0 53 29 -0.15 - 6 0 0 0 14 54 4 10 20.7 24 225 -33 0 26 4 0 3 45 0 31 23 - 0 1 34 -0.15 - 5 0 0 1 7 14 4 10 16.1 23 225 -31 1 18 26 0 56 2 1 23 46 0 50 43 -0.15 - 4 0 0 1 59 53 4 10 11.6 22 225 -30 2 11 6 1 48 39 2 16 27 1 43 19 -0.15 - 3 0 0 2 52 49 4 10 7.4 21 225 -29 3 4 4 2 41 34 3 9 26 2 36 12 -0.15 - 2 0 0 3 45 59 4 10 3.5 19 225 -28 3 57 17 3 34 43 4 2 39 3 29 21 -0.15 - 1 0 0 4 39 23 4 9 59.8 18 226 -26 4 50 41 4 28 5 4 56 5 4 22 42 -0.15 0 0 0 5 32 56 4 9 56.3 17 226 -25 5 44 16 5 21 37 5 49 40 5 16 14 -0.15 1 0 0 6 26 38 4 9 53.1 15 226 -24 6 37 59 6 15 17 6 43 23 6 9 54 -0.15 2 0 0 7 20 24 4 9 50.2 14 226 -22 7 31 46 7 9 3 7 37 11 7 3 39 -0.15 3 0 0 8 14 14 4 9 47.5 13 226 -21 8 25 36 8 2 51 8 31 1 7 57 27 -0.15 4 0 0 9 8 3 4 9 45.1 11 226 -20 9 19 26 8 56 40 9 24 52 8 51 15 -0.15 5 0 0 10 1 50 4 9 43.0 10 226 -19 10 13 14 9 50 27 10 18 40 9 45 2 -0.15 6 0 0 10 55 33 4 9 41.1 9 227 -17 11 6 57 10 44 9 11 12 22 10 38 44 -0.15 7 0 0 11 49 7 4 9 39.5 7 227 -16 12 0 31 11 37 44 12 5 57 11 32 18 -0.14 8 0 0 12 42 32 4 9 38.2 6 227 -15 12 53 56 12 31 9 12 59 22 12 25 43 -0.14 9 0 0 13 35 44 4 9 37.1 5 227 -14 13 47 8 13 24 21 13 52 34 13 18 56 -0.14 10 0 0 14 28 42 4 9 36.3 3 227 -12 14 40 5 14 17 19 14 45 30 14 11 54 -0.13 11 0 0 15 21 21 4 9 35.8 2 228 -11 15 32 44 15 9 59 15 38 9 15 4 34 -0.11 12 0 0 16 13 41 4 9 35.5 1 228 -10 16 25 3 16 2 20 16 30 28 15 56 55 -0.04 Uncertainty in time = +/- 4 secs Prediction of 2023 Jul 15.2 Data for the target star ------------------------ * name: UCAC4 251-188073 * constellation : Sagittarius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 20 01 34.7593 DE: -39 51 55.758 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 20 01 34.7593 DE: -39 51 55.759 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 11.2 * B mag [mag]: 11.8 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (3273) Drukar asteroid class: approx. diameter [km]: 31 approx. diameter ["]: 0.018 distance from Earth [AU]: 2.36100 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): 0.029", 0.002", 83.578° remarks: * orbital elements for (3273)Drukar : Mean anomaly = 23.9947322861 deg Arg. of pericenter = 225.9125307160 deg Long. of node = 45.7369588669 deg Inclination = 14.0752668330 deg Eccentricity = 0.0228673786 Semimajor axis = 3.4049901341 AU Perihelion dist = 3.3271269356 AU Mag: H = 11.69, G = 0.15 Epoch of elements : MJD 60514.17908359 TDT (2024 Jul 23.1791) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#522023Apr24,2.42,2024,7,23,4.297994,-0.032514,0.127360,-6.950591,-1.775633,0.000191,0.001909,0.000001,0.000000 -65.0554,-39.7971,117.17,19.97,False UCAC4 251-188073,20.02632202,-39.8654884,11.75,11.19,10.89,0.0,0,,20.05435004,-39.7970729,5.45,5.30,0,0,0 3273,Drukar,16.63,30.778,2.3610,0,0,-2.246,-6.61,,1.8,0 0,23.9666,2024,7,23,225.9125,45.7370,14.0753,0.02287,3.40499,3.32713,11.68,5.0,0.15 1.238,0.0290,0.0016,84,0.0043,Known errors,0.84,0,-1,-1 20240723_188073,60140.21 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 05:09 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org