IOTA/IOTA-ES occultation update for (654) Zelinda / UCAC4 389-046302 event on 2023 Mar 28, 07:11 UT Visible from Mexico Summary ------- On 2023 Mar 28 UT, the 130.3 km diameter asteroid (654) Zelinda will occult a 11.8 mag star in the constellation Hydra for observers along a path across Mexico. In the case of an occultation, the combined light of the asteroid and the star will drop by 0.51 mag to 11.28 mag (the magnitude of the asteroid) for at most 32.210 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 Mar 28, 06:45 - 2023 Mar 28, 07:36 * geocentric midpoint of event [JD]: 2460031.79915992 * magnitude of target star: 11.84 * magnitude drop [mag]: 0.51 * estimated maximum duration [s]: 32.210 * Moon: 43 % sunlit, 57° distance * Sun: 124° distance * rough path description: Mexico Additional comments ------------------- RUWE high The occultation path -------------------- * approximate projected width [km]: 137 * 1 sigma uncertainty interval [path widths]: +/- 0.06 * 1 sigma uncertainty interval [seconds]: +/- 1.2 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.010, +/- 0.006) * 1 sigma uncertainty ellipse (major, minor, PA): (0.011", 0.004", 116°) * approx speed of asteroid's shadow [km/s]: 4.0458 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 389-046302 by 654 Zelinda on 2023 Mar 28 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 99 0 0 -51 17 10 6 45 47.6 0 110 33 -51 56 49 .. .. .. -52 1 26 .. .. .. .... 100 0 0 -51 30 35 6 45 47.8 1 109 33 -52 10 5 -50 51 14 -52 14 40 -50 46 41 0.33 101 0 0 -51 43 31 6 45 48.3 2 108 33 -52 22 52 -51 4 19 -52 27 27 -50 59 47 0.34 102 0 0 -51 55 59 6 45 48.9 2 107 32 -52 35 12 -51 16 56 -52 39 46 -51 12 24 0.34 103 0 0 -52 8 0 6 45 49.7 3 107 32 -52 47 4 -51 29 4 -52 51 37 -51 24 34 0.34 104 0 0 -52 19 33 6 45 50.8 3 106 31 -52 58 29 -51 40 45 -53 3 1 -51 36 16 0.34 105 0 0 -52 30 39 6 45 52.0 4 105 31 -53 9 27 -51 51 59 -53 13 58 -51 47 30 0.34 106 0 0 -52 41 17 6 45 53.4 5 104 30 -53 19 58 -52 2 45 -53 24 28 -51 58 17 0.33 107 0 0 -52 51 29 6 45 55.1 5 103 30 -53 30 3 -52 13 4 -53 34 32 -52 8 37 0.33 108 0 0 -53 1 15 6 45 56.9 6 103 29 -53 39 41 -52 22 57 -53 44 9 -52 18 30 0.33 109 0 0 -53 10 34 6 45 58.9 7 102 29 -53 48 53 -52 32 23 -53 53 21 -52 27 57 0.33 110 0 0 -53 19 27 6 46 1.1 7 101 28 -53 57 39 -52 41 22 -54 2 6 -52 36 57 0.33 111 0 0 -53 27 54 6 46 3.5 8 100 28 -54 6 0 -52 49 56 -54 10 26 -52 45 32 0.33 112 0 0 -53 35 55 6 46 6.0 8 99 28 -54 13 56 -52 58 3 -54 18 21 -52 53 40 0.33 113 0 0 -53 43 31 6 46 8.7 9 99 27 -54 21 26 -53 5 45 -54 25 50 -53 1 22 0.33 114 0 0 -53 50 42 6 46 11.6 10 98 27 -54 28 31 -53 13 1 -54 32 55 -53 8 39 0.33 115 0 0 -53 57 27 6 46 14.7 10 97 26 -54 35 11 -53 19 52 -54 39 34 -53 15 30 0.33 116 0 0 -54 3 48 6 46 18.0 11 96 26 -54 41 26 -53 26 17 -54 45 49 -53 21 56 0.33 117 0 0 -54 9 43 6 46 21.4 12 95 25 -54 47 17 -53 32 17 -54 51 39 -53 27 57 0.33 118 0 0 -54 15 14 6 46 25.0 12 95 25 -54 52 44 -53 37 53 -54 57 5 -53 33 33 0.33 119 0 0 -54 20 21 6 46 28.7 13 94 24 -54 57 46 -53 43 3 -55 2 7 -53 38 44 0.32 120 0 0 -54 25 3 6 46 32.6 13 93 24 -55 2 24 -53 47 49 -55 6 45 -53 43 30 0.32 121 0 0 -54 29 20 6 46 36.7 14 92 23 -55 6 38 -53 52 11 -55 10 58 -53 47 52 0.32 122 0 0 -54 33 14 6 46 40.9 15 91 23 -55 10 28 -53 56 7 -55 14 48 -53 51 49 0.32 123 0 0 -54 36 43 6 46 45.3 15 90 22 -55 13 54 -53 59 39 -55 18 13 -53 55 22 0.32 124 0 0 -54 39 48 6 46 49.9 16 90 22 -55 16 56 -54 2 47 -55 21 15 -53 58 30 0.32 125 0 0 -54 42 29 6 46 54.6 16 89 21 -55 19 35 -54 5 31 -55 23 54 -54 1 14 0.32 126 0 0 -54 44 46 6 46 59.5 17 88 21 -55 21 49 -54 7 50 -55 26 8 -54 3 33 0.32 127 0 0 -54 46 39 6 47 4.6 17 87 20 -55 23 41 -54 9 45 -55 27 59 -54 5 28 0.32 128 0 0 -54 48 8 6 47 9.8 18 86 20 -55 25 8 -54 11 15 -55 29 26 -54 6 59 0.32 129 0 0 -54 49 13 6 47 15.2 19 85 19 -55 26 12 -54 12 22 -55 30 30 -54 8 5 0.32 130 0 0 -54 49 54 6 47 20.7 19 84 19 -55 26 52 -54 13 4 -55 31 10 -54 8 47 0.32 131 0 0 -54 50 11 6 47 26.5 20 84 18 -55 27 8 -54 13 21 -55 31 26 -54 9 5 0.31 132 0 0 -54 50 4 6 47 32.3 20 83 18 -55 27 1 -54 13 15 -55 31 18 -54 8 59 0.31 133 0 0 -54 49 33 6 47 38.4 21 82 18 -55 26 29 -54 12 44 -55 30 47 -54 8 28 0.31 134 0 0 -54 48 37 6 47 44.6 22 81 17 -55 25 34 -54 11 48 -55 29 52 -54 7 32 0.31 135 0 0 -54 47 18 6 47 51.0 22 80 17 -55 24 15 -54 10 28 -55 28 33 -54 6 12 0.31 136 0 0 -54 45 34 6 47 57.6 23 79 16 -55 22 32 -54 8 43 -55 26 50 -54 4 27 0.31 137 0 0 -54 43 26 6 48 4.4 23 78 16 -55 20 25 -54 6 34 -55 24 43 -54 2 17 0.31 138 0 0 -54 40 53 6 48 11.3 24 77 15 -55 17 53 -54 3 59 -55 22 12 -53 59 43 0.31 139 0 0 -54 37 55 6 48 18.4 25 77 15 -55 14 57 -54 1 0 -55 19 16 -53 56 43 0.31 140 0 0 -54 34 32 6 48 25.7 25 76 14 -55 11 37 -53 57 35 -55 15 56 -53 53 18 0.31 141 0 0 -54 30 45 6 48 33.2 26 75 13 -55 7 52 -53 53 45 -55 12 11 -53 49 28 0.31 142 0 0 -54 26 32 6 48 40.9 26 74 13 -55 3 42 -53 49 29 -55 8 1 -53 45 12 0.31 143 0 0 -54 21 53 6 48 48.7 27 73 12 -54 59 6 -53 44 48 -55 3 26 -53 40 30 0.31 144 0 0 -54 16 49 6 48 56.8 28 72 12 -54 54 6 -53 39 41 -54 58 26 -53 35 22 0.31 145 0 0 -54 11 19 6 49 5.1 28 71 11 -54 48 39 -53 34 7 -54 53 0 -53 29 48 0.30 146 0 0 -54 5 23 6 49 13.6 29 70 11 -54 42 47 -53 28 7 -54 47 8 -53 23 48 0.30 147 0 0 -53 59 1 6 49 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39 -36 2 34 0.30 -163 0 0 -36 15 40 7 3 48.8 66 7 -27 -37 3 34 -35 27 58 -37 9 9 -35 22 26 0.30 -162 0 0 -35 34 58 7 4 18.9 67 5 -28 -36 23 9 -34 47 0 -36 28 45 -34 41 26 0.30 -161 0 0 -34 53 23 7 4 49.6 68 2 -29 -35 41 50 -34 5 9 -35 47 29 -33 59 34 0.30 -160 0 0 -34 10 56 7 5 20.9 68 359 -30 -34 59 39 -33 22 26 -35 5 19 -33 16 49 0.30 -159 0 0 -33 27 37 7 5 52.8 69 356 -31 -34 16 36 -32 38 52 -34 22 18 -32 33 14 0.31 -158 0 0 -32 43 28 7 6 25.3 70 353 -32 -33 32 41 -31 54 28 -33 38 25 -31 48 48 0.31 -157 0 0 -31 58 29 7 6 58.4 70 349 -34 -32 47 56 -31 9 15 -32 53 42 -31 3 33 0.31 -156 0 0 -31 12 41 7 7 32.0 71 345 -35 -32 2 22 -30 23 14 -32 8 9 -30 17 30 0.31 -155 0 0 -30 26 6 7 8 6.2 71 341 -36 -31 16 0 -29 36 26 -31 21 49 -29 30 41 0.31 -154 0 0 -29 38 45 7 8 40.8 72 337 -37 -30 28 51 -28 48 53 -30 34 41 -28 43 7 0.31 -153 0 0 -28 50 40 7 9 16.0 72 333 -38 -29 40 58 -28 0 37 -29 46 49 -27 54 49 0.31 -152 0 0 -28 1 53 7 9 51.5 72 328 -40 -28 52 21 -27 11 40 -28 58 14 -27 5 51 0.32 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-139 0 0 -16 44 2 7 17 56.7 66 277 -57 -17 35 6 -15 53 16 -17 41 3 -15 47 24 0.34 -138 0 0 -15 50 24 7 18 34.0 65 274 -58 -16 41 22 -14 59 44 -16 47 19 -14 53 52 0.34 -137 0 0 -14 56 51 7 19 11.1 64 272 -59 -15 47 42 -14 6 18 -15 53 38 -14 0 27 0.35 -136 0 0 -14 3 26 7 19 47.8 63 270 -61 -14 54 10 -13 13 2 -15 0 5 -13 7 12 0.35 -135 0 0 -13 10 14 7 20 24.2 62 268 -62 -14 0 48 -12 19 58 -14 6 42 -12 14 9 0.35 -134 0 0 -12 17 16 7 21 0.2 60 266 -64 -13 7 41 -11 27 11 -13 13 33 -11 21 23 0.35 -133 0 0 -11 24 38 7 21 35.7 59 265 -65 -12 14 51 -10 34 44 -12 20 42 -10 28 57 0.35 -132 0 0 -10 32 21 7 22 10.7 58 263 -66 -11 22 22 - 9 42 39 -11 28 12 - 9 36 54 0.36 -131 0 0 - 9 40 29 7 22 45.2 57 262 -68 -10 30 18 - 8 51 0 -10 36 6 - 8 45 17 0.36 -130 0 0 - 8 49 6 7 23 19.1 56 261 -69 - 9 38 40 - 7 59 50 - 9 44 27 - 7 54 8 0.36 -129 0 0 - 7 58 12 7 23 52.3 54 260 -70 - 8 47 33 - 7 9 11 - 8 53 18 - 7 3 31 0.36 -128 0 0 - 7 7 52 7 24 24.9 53 259 -71 - 7 56 58 - 6 19 6 - 8 2 41 - 6 13 27 0.36 -127 0 0 - 6 18 8 7 24 56.8 52 258 -73 - 7 6 58 - 5 29 37 - 7 12 40 - 5 24 0 0.37 -126 0 0 - 5 29 2 7 25 28.0 51 257 -74 - 6 17 36 - 4 40 46 - 6 23 15 - 4 35 11 0.37 -125 0 0 - 4 40 35 7 25 58.5 49 256 -75 - 5 28 53 - 3 52 36 - 5 34 30 - 3 47 3 0.37 -124 0 0 - 3 52 51 7 26 28.2 48 256 -76 - 4 40 51 - 3 5 8 - 4 46 27 - 2 59 37 0.37 -123 0 0 - 3 5 50 7 26 57.1 47 255 -77 - 3 53 33 - 2 18 24 - 3 59 7 - 2 12 55 0.37 -122 0 0 - 2 19 34 7 27 25.2 45 255 -79 - 3 7 0 - 1 32 26 - 3 12 32 - 1 26 58 0.37 -121 0 0 - 1 34 5 7 27 52.5 44 254 -80 - 2 21 13 - 0 47 14 - 2 26 43 - 0 41 49 0.37 -120 0 0 - 0 49 23 7 28 19.0 43 254 -81 - 1 36 14 - 0 2 50 - 1 41 41 0 2 33 0.37 -119 0 0 - 0 5 30 7 28 44.7 42 253 -81 - 0 52 3 0 40 45 - 0 57 29 0 46 7 0.38 -118 0 0 0 37 32 7 29 9.5 40 253 -82 - 0 8 43 1 23 31 - 0 14 6 1 28 50 0.38 -117 0 0 1 19 45 7 29 33.5 39 253 -83 0 33 48 2 5 25 0 28 26 2 10 43 0.38 -116 0 0 2 1 6 7 29 56.7 38 253 -83 1 15 27 2 46 29 1 10 7 2 51 44 0.38 -115 0 0 2 41 35 7 30 19.1 37 252 -83 1 56 14 3 26 41 1 50 57 3 31 54 0.38 -114 0 0 3 21 13 7 30 40.6 35 252 -83 2 36 8 4 6 1 2 30 53 4 11 12 0.38 -113 0 0 3 59 57 7 31 1.3 34 252 -83 3 15 11 4 44 29 3 9 58 4 49 38 0.38 -112 0 0 4 37 50 7 31 21.2 33 252 -82 3 53 20 5 22 4 3 48 9 5 27 11 0.38 -111 0 0 5 14 49 7 31 40.2 32 252 -82 4 30 36 5 58 47 4 25 27 6 3 52 0.38 -110 0 0 5 50 55 7 31 58.5 30 252 -81 5 6 59 6 34 37 5 1 52 6 39 40 0.38 -109 0 0 6 26 9 7 32 15.9 29 252 -80 5 42 29 7 9 34 5 37 24 7 14 36 0.38 -108 0 0 7 0 30 7 32 32.6 28 252 -79 6 17 7 7 43 39 6 12 3 7 48 39 0.38 -107 0 0 7 33 58 7 32 48.5 27 252 -78 6 50 51 8 16 52 6 45 50 8 21 50 0.38 -106 0 0 8 6 34 7 33 3.6 26 252 -77 7 23 43 8 49 13 7 18 43 8 54 9 0.38 -105 0 0 8 38 18 7 33 18.0 25 252 -77 7 55 42 9 20 42 7 50 44 9 25 36 0.38 -104 0 0 9 9 11 7 33 31.7 23 252 -76 8 26 49 9 51 19 8 21 53 9 56 12 0.38 -103 0 0 9 39 12 7 33 44.6 22 252 -75 8 57 4 10 21 6 8 52 10 10 25 57 0.38 -102 0 0 10 8 21 7 33 56.7 21 252 -73 9 26 28 10 50 1 9 21 36 10 54 51 0.38 -101 0 0 10 36 41 7 34 8.2 20 252 -72 9 55 2 11 18 7 9 50 11 11 22 55 0.38 -100 0 0 11 4 10 7 34 19.0 19 253 -71 10 22 44 11 45 23 10 17 55 11 50 9 0.38 - 99 0 0 11 30 49 7 34 29.1 18 253 -70 10 49 37 12 11 49 10 44 49 12 16 34 0.38 - 98 0 0 11 56 39 7 34 38.6 17 253 -69 11 15 39 12 37 27 11 10 53 12 42 10 0.38 - 97 0 0 12 21 40 7 34 47.3 16 253 -68 11 40 53 13 2 16 11 36 8 13 6 58 0.38 - 96 0 0 12 45 53 7 34 55.5 15 253 -67 12 5 18 13 26 17 12 0 34 13 30 57 0.38 - 95 0 0 13 9 18 7 35 3.0 13 254 -66 12 28 55 13 49 30 12 24 13 13 54 10 0.38 - 94 0 0 13 31 56 7 35 9.9 12 254 -65 12 51 44 14 11 57 12 47 3 14 16 35 0.38 - 93 0 0 13 53 47 7 35 16.1 11 254 -64 13 13 46 14 33 37 13 9 6 14 38 14 0.38 - 92 0 0 14 14 52 7 35 21.8 10 254 -63 13 35 1 14 54 32 13 30 23 14 59 7 0.38 - 91 0 0 14 35 11 7 35 26.9 9 254 -62 13 55 30 15 14 40 13 50 53 15 19 15 0.39 - 90 0 0 14 54 44 7 35 31.5 8 255 -61 14 15 14 15 34 4 14 10 38 15 38 38 0.39 - 89 0 0 15 13 33 7 35 35.4 7 255 -60 14 34 12 15 52 44 14 29 37 15 57 16 0.39 - 88 0 0 15 31 38 7 35 38.8 6 255 -59 14 52 26 16 10 39 14 47 52 16 15 11 0.40 - 87 0 0 15 48 58 7 35 41.7 5 256 -59 15 9 55 16 27 51 15 5 23 16 32 22 0.40 - 86 0 0 16 5 36 7 35 44.1 4 256 -58 15 26 41 16 44 21 15 22 9 16 48 50 0.41 - 85 0 0 16 21 30 7 35 45.9 3 256 -57 15 42 44 17 0 7 15 38 13 17 4 35 0.43 - 84 0 0 16 36 42 7 35 47.2 2 256 -56 15 58 3 17 15 12 15 53 34 17 19 39 0.47 - 83 0 0 16 51 12 7 35 48.0 1 257 -55 16 12 41 17 29 34 16 8 12 17 34 1 0.56 - 82 0 0 17 5 1 7 35 48.3 0 257 -54 16 26 37 17 43 16 16 22 8 .. .. .. 1.80 Uncertainty in time = +/- 2 secs Prediction of 2023 Feb 15.9 Data for the target star ------------------------ * name: UCAC4 389-046302 * constellation : Hydra * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 08 44 44.8759 DE: -12 22 15.175 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 08 44 44.8759 DE: -12 22 15.175 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.300,0.200) * V mag [mag]: 11.8 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (654) Zelinda asteroid class: approx. diameter [km]: 130 approx. diameter ["]: 0.170 distance from Earth [AU]: 1.05520 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#123 date of fit: 2023 Feb 07 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): 0.011", 0.004", 116.4° remarks: * orbital elements for (654)Zelinda : Mean anomaly = 19.5266450023 deg Arg. of pericenter = 214.5814471056 deg Long. of node = 278.3321553137 deg Inclination = 18.0935876214 deg Eccentricity = 0.2309657735 Semimajor axis = 2.2974693633 AU Perihelion dist = 1.7668325747 AU Mag: H = 8.66, G = 0.15 Epoch of elements : MJD 60031.29930555 TDT (2023 Mar 28.2993) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#1232023Feb07,32.21,2023,3,28,7.179838,0.174031,-0.247822,1.868511,1.312790,0.004163,0.000350,0.000001,-0.000001 -161.6832,-12.4571,73.60,2.92,False UCAC4 389-046302,8.74579888,-12.3708820,0.00,11.84,0.00,0.0,0,,8.76424413,-12.4570580,0.51,0.00,0,0,0 654,Zelinda,11.28,130.3,1.0552,0,0,1.065,10.94,,6.2,0 0,19.4419,2023,3,28,214.5814,278.3322,18.0936,0.23097,2.29747,1.76683,8.66,5.0,0.15 1.058,0.0110,0.0043,116,0.0099,Known errors,-1.00,-1,-1,-1 20230328_046302,59990.87 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Feb 15, 20:54 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org