IOTA/IOTA-ES occultation update for (36) Atalante / UCAC4-207-176207 event on 2023 Jul 02, 06:33 UT Visible from South America Summary ------- On 2023 Jul 02 UT, the 112.2 km diameter asteroid (36) Atalante will occult a 12.5 mag star in the constellation Telescopium for observers along a path across South America. In the case of an occultation, the combined light of the asteroid and the star will drop by 1.17 mag to 13.19 mag (the magnitude of the asteroid) for at most 8.460 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: 2023 Jul 02, 06:25 - 2023 Jul 02, 06:41 * geocentric midpoint of event [JD]: 2460127.77310409 * magnitude of target star: 12.47 * magnitude drop [mag]: 1.17 * estimated maximum duration [s]: 8.460 * Moon: 98 % sunlit, 32° distance * Sun: 153° distance * rough path description: South America Additional comments ------------------- RUWE high The occultation path -------------------- * approximate projected width [km]: 115 * 1 sigma uncertainty interval [path widths]: +/- 0.06 * 1 sigma uncertainty interval [seconds]: +/- 1.3 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.012, +/- 0.006) * 1 sigma uncertainty ellipse (major, minor, PA): (0.012", 0.005", 72°) * approx speed of asteroid's shadow [km/s]: 13.2628 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4-207-176207 by 36 Atalante on 2023 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 -178 0 0 .. .. .... .. .. .. .. .. .. .. .. .. - 0 33 25 .. .. .. - 0 39 26 .... -177 0 0 - 0 54 18 6 41 6.0 1 139 -12 - 0 7 5 - 1 41 16 - 0 1 3 - 1 47 15 .... -176 0 0 - 2 1 34 6 41 5.6 3 139 -13 - 1 14 44 - 2 48 11 - 1 8 44 - 2 54 7 -0.10 -175 0 0 - 3 7 52 6 41 4.9 4 138 -14 - 2 21 23 - 3 54 6 - 2 15 26 - 3 59 59 -0.15 -174 0 0 - 4 13 7 6 41 3.8 6 138 -16 - 3 27 1 - 4 59 0 - 3 21 8 - 5 4 50 -0.18 -173 0 0 - 5 17 20 6 41 2.4 7 138 -17 - 4 31 36 - 6 2 50 - 4 25 46 - 6 8 37 -0.19 -172 0 0 - 6 20 26 6 41 0.8 8 138 -18 - 5 35 6 - 7 5 34 - 5 29 18 - 7 11 18 -0.20 -171 0 0 - 7 22 25 6 40 58.8 10 138 -20 - 6 37 28 - 8 7 10 - 6 31 43 - 8 12 52 -0.21 -170 0 0 - 8 23 16 6 40 56.6 11 138 -21 - 7 38 42 - 9 7 38 - 7 33 0 - 9 13 17 -0.21 -169 0 0 - 9 22 56 6 40 54.1 13 138 -22 - 8 38 45 -10 6 56 - 8 33 6 -10 12 31 -0.21 -168 0 0 -10 21 26 6 40 51.4 14 138 -23 - 9 37 38 -11 5 2 - 9 32 2 -11 10 35 -0.22 -167 0 0 -11 18 43 6 40 48.4 15 138 -25 -10 35 18 -12 1 57 -10 29 45 -12 7 27 -0.22 -166 0 0 -12 14 48 6 40 45.2 17 137 -26 -11 31 46 -12 57 40 -11 26 16 -13 3 7 -0.22 -165 0 0 -13 9 41 6 40 41.8 18 137 -27 -12 27 1 -13 52 10 -12 21 34 -13 57 34 -0.22 -164 0 0 -14 3 20 6 40 38.2 19 137 -28 -13 21 3 -14 45 27 -13 15 39 -14 50 48 -0.22 -163 0 0 -14 55 46 6 40 34.4 21 137 -29 -14 13 52 -15 37 31 -14 8 30 -15 42 50 -0.22 -162 0 0 -15 47 0 6 40 30.4 22 137 -31 -15 5 27 -16 28 23 -15 0 9 -16 33 39 -0.22 -161 0 0 -16 37 0 6 40 26.3 23 136 -32 -15 55 50 -17 18 2 -15 50 34 -17 23 15 -0.23 -160 0 0 -17 25 49 6 40 22.0 24 136 -33 -16 44 59 -18 6 29 -16 39 46 -18 11 40 -0.23 -159 0 0 -18 13 25 6 40 17.5 26 136 -34 -17 32 57 -18 53 44 -17 27 46 -18 58 53 -0.23 -158 0 0 -18 59 50 6 40 12.9 27 136 -35 -18 19 42 -19 39 49 -18 14 34 -19 44 54 -0.23 -157 0 0 -19 45 3 6 40 8.2 28 135 -36 -19 5 16 -20 24 42 -19 0 11 -20 29 45 -0.23 -156 0 0 -20 29 7 6 40 3.4 29 135 -37 -19 49 40 -21 8 26 -19 44 37 -21 13 27 -0.23 -155 0 0 -21 12 1 6 39 58.4 30 135 -38 -20 32 53 -21 51 1 -20 27 53 -21 55 59 -0.23 -154 0 0 -21 53 46 6 39 53.4 31 135 -39 -21 14 58 -22 32 27 -21 10 0 -22 37 23 -0.23 -153 0 0 -22 34 24 6 39 48.2 33 134 -40 -21 55 54 -23 12 46 -21 50 59 -23 17 39 -0.23 -152 0 0 -23 13 54 6 39 43.0 34 134 -41 -22 35 43 -23 51 58 -22 30 51 -23 56 49 -0.23 -151 0 0 -23 52 19 6 39 37.7 35 134 -42 -23 14 26 -24 30 5 -23 9 35 -24 34 53 -0.23 -150 0 0 -24 29 38 6 39 32.3 36 133 -43 -23 52 3 -25 7 7 -23 47 14 -25 11 53 -0.23 -149 0 0 -25 5 53 6 39 26.8 37 133 -44 -24 28 35 -25 43 5 -24 23 49 -25 47 49 -0.23 -148 0 0 -25 41 5 6 39 21.3 38 133 -45 -25 4 3 -26 18 0 -24 59 20 -26 22 42 -0.23 -147 0 0 -26 15 14 6 39 15.7 39 133 -46 -25 38 29 -26 51 53 -25 33 48 -26 56 33 -0.23 -146 0 0 -26 48 22 6 39 10.0 40 132 -47 -26 11 53 -27 24 45 -26 7 14 -27 29 23 -0.23 -145 0 0 -27 20 30 6 39 4.3 41 132 -48 -26 44 17 -27 56 38 -26 39 39 -28 1 14 -0.23 -144 0 0 -27 51 39 6 38 58.6 42 132 -49 -27 15 40 -28 27 31 -27 11 5 -28 32 5 -0.22 -143 0 0 -28 21 49 6 38 52.8 43 132 -50 -27 46 5 -28 57 27 -27 41 31 -29 1 59 -0.22 -142 0 0 -28 51 1 6 38 47.0 44 131 -51 -28 15 32 -29 26 25 -28 11 0 -29 30 56 -0.22 -141 0 0 -29 19 17 6 38 41.1 45 131 -52 -28 44 2 -29 54 27 -28 39 32 -29 58 56 -0.22 -140 0 0 -29 46 38 6 38 35.2 46 131 -52 -29 11 36 -30 21 35 -29 7 7 -30 26 2 -0.22 -139 0 0 -30 13 4 6 38 29.3 47 130 -53 -29 38 15 -30 47 48 -29 33 48 -30 52 13 -0.22 -138 0 0 -30 38 36 6 38 23.4 48 130 -54 -30 4 0 -31 13 7 -29 59 35 -31 17 31 -0.22 -137 0 0 -31 3 15 6 38 17.4 48 130 -55 -30 28 51 -31 37 34 -30 24 28 -31 41 57 -0.22 -136 0 0 -31 27 3 6 38 11.4 49 130 -56 -30 52 51 -32 1 10 -30 48 29 -32 5 31 -0.22 -135 0 0 -31 49 59 6 38 5.4 50 129 -57 -31 15 58 -32 23 55 -31 11 38 -32 28 14 -0.22 -134 0 0 -32 12 5 6 37 59.4 51 129 -57 -31 38 16 -32 45 50 -31 33 56 -32 50 8 -0.22 -133 0 0 -32 33 22 6 37 53.3 52 129 -58 -31 59 43 -33 6 56 -31 55 25 -33 11 12 -0.22 -132 0 0 -32 53 49 6 37 47.3 53 129 -59 -32 20 21 -33 27 13 -32 16 4 -33 31 28 -0.22 -131 0 0 -33 13 29 6 37 41.2 54 129 -60 -32 40 10 -33 46 43 -32 35 55 -33 50 57 -0.22 -130 0 0 -33 32 22 6 37 35.1 55 128 -60 -32 59 13 -34 5 26 -32 54 59 -34 9 39 -0.22 -129 0 0 -33 50 28 6 37 29.0 55 128 -61 -33 17 28 -34 23 23 -33 13 15 -34 27 35 -0.22 -128 0 0 -34 7 48 6 37 22.9 56 128 -62 -33 34 57 -34 40 35 -33 30 45 -34 44 45 -0.22 -127 0 0 -34 24 23 6 37 16.8 57 128 -62 -33 51 40 -34 57 1 -33 47 30 -35 1 11 -0.22 -126 0 0 -34 40 13 6 37 10.7 58 128 -63 -34 7 39 -35 12 44 -34 3 29 -35 16 52 -0.22 -125 0 0 -34 55 20 6 37 4.5 59 128 -64 -34 22 53 -35 27 43 -34 18 45 -35 31 50 -0.22 -124 0 0 -35 9 43 6 36 58.4 59 128 -64 -34 37 24 -35 41 58 -34 33 16 -35 46 5 -0.22 -123 0 0 -35 23 24 6 36 52.3 60 128 -65 -34 51 11 -35 55 32 -34 47 4 -35 59 37 -0.22 -122 0 0 -35 36 22 6 36 46.1 61 128 -66 -35 4 16 -36 8 23 -35 0 10 -36 12 28 -0.22 -121 0 0 -35 48 38 6 36 39.9 62 128 -66 -35 16 38 -36 20 33 -35 12 33 -36 24 37 -0.22 -120 0 0 -36 0 13 6 36 33.8 62 128 -67 -35 28 19 -36 32 2 -35 24 15 -36 36 6 -0.22 -119 0 0 -36 11 7 6 36 27.6 63 128 -68 -35 39 19 -36 42 51 -35 35 15 -36 46 54 -0.22 -118 0 0 -36 21 21 6 36 21.4 64 128 -68 -35 49 38 -36 52 59 -35 45 35 -36 57 1 -0.22 -117 0 0 -36 30 55 6 36 15.2 64 128 -69 -35 59 17 -37 2 28 -35 55 14 -37 6 30 -0.22 -116 0 0 -36 39 49 6 36 9.0 65 129 -69 -36 8 16 -37 11 18 -36 4 14 -37 15 18 -0.22 -115 0 0 -36 48 3 6 36 2.8 66 129 -70 -36 16 35 -37 19 28 -36 12 33 -37 23 28 -0.22 -114 0 0 -36 55 39 6 35 56.6 67 129 -70 -36 24 14 -37 27 0 -36 20 14 -37 31 0 -0.22 -113 0 0 -37 2 36 6 35 50.3 67 129 -71 -36 31 15 -37 33 54 -36 27 15 -37 37 53 -0.22 -112 0 0 -37 8 55 6 35 44.1 68 130 -71 -36 37 37 -37 40 9 -36 33 37 -37 44 8 -0.22 -111 0 0 -37 14 36 6 35 37.9 68 130 -72 -36 43 21 -37 45 47 -36 39 21 -37 49 45 -0.22 -110 0 0 -37 19 38 6 35 31.6 69 131 -72 -36 48 26 -37 50 47 -36 44 27 -37 54 45 -0.22 -109 0 0 -37 24 3 6 35 25.3 70 132 -73 -36 52 53 -37 55 10 -36 48 55 -37 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15 -27 23 14 -28 43 48 -0.22 - 60 0 0 -27 33 4 6 29 50.3 61 216 -57 -26 57 3 -28 8 59 -26 52 27 -28 13 33 -0.22 - 59 0 0 -27 1 35 6 29 42.8 60 216 -56 -26 25 19 -27 37 45 -26 20 41 -27 42 21 -0.23 - 58 0 0 -26 29 8 6 29 35.2 59 216 -55 -25 52 37 -27 5 33 -25 47 57 -27 10 11 -0.23 - 57 0 0 -25 55 41 6 29 27.6 59 216 -54 -25 18 55 -26 32 22 -25 14 13 -26 37 2 -0.23 - 56 0 0 -25 21 15 6 29 19.9 58 216 -53 -24 44 12 -25 58 11 -24 39 28 -26 2 53 -0.23 - 55 0 0 -24 45 47 6 29 12.3 57 217 -52 -24 8 28 -25 22 59 -24 3 42 -25 27 43 -0.23 - 54 0 0 -24 9 17 6 29 4.7 56 217 -51 -23 31 41 -24 46 46 -23 26 53 -24 51 32 -0.23 - 53 0 0 -23 31 45 6 28 57.1 55 217 -50 -22 53 52 -24 9 30 -22 49 1 -24 14 19 -0.23 - 52 0 0 -22 53 8 6 28 49.4 53 217 -49 -22 14 58 -23 31 12 -22 10 5 -23 36 2 -0.23 - 51 0 0 -22 13 28 6 28 41.8 52 217 -48 -21 35 0 -22 51 49 -21 30 5 -22 56 42 -0.23 - 50 0 0 -21 32 42 6 28 34.2 51 217 -47 -20 53 56 -22 11 21 -20 48 58 -22 16 16 -0.23 - 49 0 0 -20 50 50 6 28 26.6 50 217 -46 -20 11 45 -21 29 47 -20 6 45 -21 34 45 -0.23 - 48 0 0 -20 7 52 6 28 19.0 49 217 -45 -19 28 28 -20 47 8 -19 23 26 -20 52 8 -0.23 - 47 0 0 -19 23 46 6 28 11.5 48 217 -44 -18 44 3 -20 3 21 -18 38 58 -20 8 23 -0.23 - 46 0 0 -18 38 32 6 28 4.0 47 217 -43 -17 58 29 -19 18 26 -17 53 22 -19 23 31 -0.23 - 45 0 0 -17 52 10 6 27 56.5 46 217 -42 -17 11 47 -18 32 24 -17 6 38 -18 37 31 -0.23 - 44 0 0 -17 4 39 6 27 49.1 45 217 -41 -16 23 56 -17 45 13 -16 18 44 -17 50 23 -0.23 - 43 0 0 -16 15 58 6 27 41.8 43 217 -40 -15 34 55 -16 56 52 -15 29 40 -17 2 5 -0.23 - 42 0 0 -15 26 8 6 27 34.5 42 217 -39 -14 44 44 -16 7 23 -14 39 27 -16 12 38 -0.23 - 41 0 0 -14 35 9 6 27 27.3 41 217 -38 -13 53 24 -15 16 44 -13 48 4 -15 22 2 -0.23 - 40 0 0 -13 42 59 6 27 20.2 40 217 -36 -13 0 53 -14 24 55 -12 55 30 -14 30 16 -0.23 - 39 0 0 -12 49 40 6 27 13.2 38 217 -35 -12 7 13 -13 31 57 -12 1 47 -13 37 20 -0.24 - 38 0 0 -11 55 11 6 27 6.3 37 217 -34 -11 12 22 -12 37 50 -11 6 54 -12 43 15 -0.24 - 37 0 0 -10 59 33 6 26 59.6 36 217 -33 -10 16 23 -11 42 33 -10 10 51 -11 48 1 -0.24 - 36 0 0 -10 2 46 6 26 52.9 34 217 -32 - 9 19 14 -10 46 8 - 9 13 40 -10 51 39 -0.24 - 35 0 0 - 9 4 52 6 26 46.5 33 217 -30 - 8 20 58 - 9 48 35 - 8 15 21 - 9 54 8 -0.24 - 34 0 0 - 8 5 50 6 26 40.1 32 217 -29 - 7 21 34 - 8 49 54 - 7 15 54 - 8 55 31 -0.24 - 33 0 0 - 7 5 42 6 26 34.0 30 217 -28 - 6 21 4 - 7 50 7 - 6 15 22 - 7 55 47 -0.24 - 32 0 0 - 6 4 29 6 26 28.0 29 217 -27 - 5 19 29 - 6 49 16 - 5 13 44 - 6 54 58 -0.24 - 31 0 0 - 5 2 12 6 26 22.3 28 217 -25 - 4 16 51 - 5 47 21 - 4 11 3 - 5 53 5 -0.24 - 30 0 0 - 3 58 54 6 26 16.7 26 217 -24 - 3 13 12 - 4 44 24 - 3 7 21 - 4 50 11 -0.24 - 29 0 0 - 2 54 36 6 26 11.4 25 217 -23 - 2 8 33 - 3 40 27 - 2 2 39 - 3 46 17 -0.24 - 28 0 0 - 1 49 21 6 26 6.3 23 217 -21 - 1 2 57 - 2 35 32 - 0 57 0 - 2 41 24 -0.24 - 27 0 0 - 0 43 10 6 26 1.5 22 217 -20 0 3 34 - 1 29 41 0 9 33 - 1 35 36 -0.24 - 26 0 0 0 23 53 6 25 56.9 20 217 -19 1 10 58 - 0 22 58 1 16 59 - 0 28 56 -0.24 - 25 0 0 1 31 45 6 25 52.6 19 217 -17 2 19 10 0 44 35 2 25 14 0 38 35 -0.24 - 24 0 0 2 40 24 6 25 48.6 17 217 -16 3 28 8 1 52 56 3 34 14 1 46 53 -0.24 - 23 0 0 3 49 46 6 25 44.9 16 217 -15 4 37 47 3 1 59 4 43 56 2 55 55 -0.24 - 22 0 0 4 59 47 6 25 41.5 14 217 -13 5 48 6 4 11 43 5 54 17 4 5 36 -0.24 - 21 0 0 6 10 22 6 25 38.5 13 217 -12 6 58 58 5 22 2 7 5 11 5 15 53 -0.24 - 20 0 0 7 21 29 6 25 35.7 11 217 -10 8 10 21 6 32 53 8 16 36 6 26 42 -0.24 - 19 0 0 8 33 2 6 25 33.3 10 217 -9 9 22 8 7 44 11 9 28 25 7 37 58 -0.24 - 18 0 0 9 44 56 6 25 31.3 8 218 -8 10 34 17 8 55 52 10 40 35 8 49 37 -0.24 - 17 0 0 10 57 7 6 25 29.6 7 218 -6 11 46 40 10 7 51 11 53 1 10 1 35 -0.24 - 16 0 0 12 9 30 6 25 28.3 5 218 -5 12 59 15 11 20 2 13 5 37 11 13 45 -0.24 - 15 0 0 13 22 0 6 25 27.3 4 218 -3 14 11 54 12 32 22 14 18 18 12 26 3 -0.24 - 14 0 0 14 34 31 6 25 26.7 2 218 -2 15 24 34 13 44 44 15 30 58 13 38 24 -0.24 - 13 0 0 15 46 57 6 25 26.4 0 219 -1 .. .. .. 14 57 3 .. .. .. 14 50 43 -0.22 Uncertainty in time = +/- 1 secs Prediction of 2023 May 14.2 Data for the target star ------------------------ * name: UCAC4-207-176207 * constellation : Telescopium * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 19 28 55.1238 DE: -48 36 31.312 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 19 28 55.1238 DE: -48 36 31.312 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.600,0.500) * V mag [mag]: 12.5 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (36) Atalante asteroid class: approx. diameter [km]: 112 approx. diameter ["]: 0.076 distance from Earth [AU]: 2.04240 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#109 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): 0.012", 0.005", 71.688° remarks: * orbital elements for (36)Atalante : Mean anomaly = 270.3605727794 deg Arg. of pericenter = 47.8280997040 deg Long. of node = 358.1960494032 deg Inclination = 18.3738300709 deg Eccentricity = 0.3061201405 Semimajor axis = 2.7453056064 AU Perihelion dist = 1.9049122686 AU Mag: H = 8.60, G = 0.15 Epoch of elements : MJD 60127.27312500 TDT (2023 Jul 02.2731) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#1092023Apr24,8.46,2023,7,2,6.554498,-0.045555,0.207556,-7.311870,-1.604823,-0.001021,0.002322,0.000001,0.000000 -85.6899,-48.5597,82.69,23.05,False UCAC4-207-176207,19.48197882,-48.6086977,0.00,12.47,0.00,0.0,0,,19.51158910,-48.5597214,1.17,0.00,0,0,0 36,Atalante,13.19,112.2,2.0424,0,0,-3.171,-6.90,,6.0,0 0,270.3014,2023,7,2,47.8281,358.1960,18.3738,0.30612,2.74531,1.90491,8.66,5.0,0.15 1.064,0.0120,0.0047,72,0.0048,Known errors,-1.00,-1,-1,-1 20230702_176207,60078.16 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 May 14, 03:57 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org