IOTA/IOTA-ES occultation update for (41) Daphne / UCAC4-395-086831 event on 2022 Oct 26, 22:53 UT Visible from South America Summary ------- On 2022 Oct 26 UT, the 187.4 km diameter asteroid (41) Daphne will occult a 12.5 mag star in the constellation Scutum 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 0.82 mag to 12.61 mag (the magnitude of the asteroid) for at most 5.690 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: 2022 Oct 26, 22:50 - 2022 Oct 26, 22:56 * geocentric midpoint of event [JD]: 2459879.45379958 * magnitude of target star: 12.47 * magnitude drop [mag]: 0.82 * estimated maximum duration [s]: 5.690 * Moon: 3 % sunlit, 50° distance * Sun: 68° distance * rough path description: South America Additional comments ------------------- RUWE high The occultation path -------------------- * approximate projected width [km]: 187 * 1 sigma uncertainty interval [path widths]: +/- 0.07 * 1 sigma uncertainty interval [seconds]: +/- 2.0 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.036, +/- 0.003) * 1 sigma uncertainty ellipse (major, minor, PA): (0.036", 0.003", 89°) * approx speed of asteroid's shadow [km/s]: 32.9138 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4-395-086831 by 41 Daphne #1 on 2022 Oct 26 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 175 0 0 6 39 22 22 50 13.9 1 101 63 5 47 30 7 31 12 5 43 43 7 34 59 .... 176 0 0 6 27 23 22 50 14.0 2 101 64 5 35 30 7 19 15 5 31 42 7 23 2 0.06 177 0 0 6 15 15 22 50 14.1 3 101 65 5 23 20 7 7 8 5 19 32 7 10 55 0.04 178 0 0 6 2 57 22 50 14.3 4 102 66 5 11 1 6 54 52 5 7 14 6 58 40 0.04 179 0 0 5 50 31 22 50 14.6 5 102 67 4 58 34 6 42 28 4 54 46 6 46 15 0.04 -180 0 0 5 37 57 22 50 14.9 6 102 67 4 45 58 6 29 55 4 42 10 6 33 43 0.03 -179 0 0 5 25 15 22 50 15.3 7 102 68 4 33 14 6 17 14 4 29 26 6 21 2 0.03 -178 0 0 5 12 24 22 50 15.7 8 102 69 4 20 22 6 4 24 4 16 34 6 8 12 0.03 -177 0 0 4 59 26 22 50 16.3 9 102 70 4 7 23 5 51 27 4 3 34 5 55 16 0.03 -176 0 0 4 46 20 22 50 16.8 10 102 70 3 54 15 5 38 23 3 50 27 5 42 11 0.03 -175 0 0 4 33 7 22 50 17.5 11 102 71 3 41 1 5 25 11 3 37 13 5 28 59 0.03 -174 0 0 4 19 46 22 50 18.2 12 102 71 3 27 39 5 11 52 3 23 51 5 15 40 0.03 -173 0 0 4 6 19 22 50 18.9 13 102 72 3 14 11 4 58 26 3 10 23 5 2 14 0.03 -172 0 0 3 52 46 22 50 19.7 14 102 73 3 0 36 4 44 54 2 56 48 4 48 42 0.03 -171 0 0 3 39 6 22 50 20.6 15 102 73 2 46 55 4 31 15 2 43 7 4 35 3 0.03 -170 0 0 3 25 20 22 50 21.6 16 103 74 2 33 8 4 17 30 2 29 19 4 21 19 0.03 -169 0 0 3 11 28 22 50 22.6 17 103 74 2 19 16 4 3 39 2 15 27 4 7 28 0.03 -168 0 0 2 57 31 22 50 23.6 18 103 74 2 5 17 3 49 43 2 1 28 3 53 32 0.03 -167 0 0 2 43 28 22 50 24.7 19 103 75 1 51 14 3 35 42 1 47 25 3 39 31 0.03 -166 0 0 2 29 21 22 50 25.9 20 103 75 1 37 6 3 21 35 1 33 17 3 25 24 0.03 -165 0 0 2 15 9 22 50 27.2 21 103 75 1 22 53 3 7 24 1 19 4 3 11 13 0.03 -164 0 0 2 0 53 22 50 28.5 22 103 75 1 8 36 2 53 9 1 4 46 2 56 58 0.03 -163 0 0 1 46 32 22 50 29.8 23 103 75 0 54 15 2 38 49 0 50 25 2 42 38 0.03 -162 0 0 1 32 8 22 50 31.3 24 103 75 0 39 50 2 24 25 0 36 0 2 28 14 0.03 -161 0 0 1 17 40 22 50 32.7 26 103 75 0 25 21 2 9 58 0 21 32 2 13 47 0.03 -160 0 0 1 3 9 22 50 34.3 27 103 75 0 10 50 1 55 28 0 7 0 1 59 17 0.03 -159 0 0 0 48 35 22 50 35.9 28 103 75 - 0 3 45 1 40 54 - 0 7 34 1 44 44 0.03 -158 0 0 0 33 59 22 50 37.5 29 103 74 - 0 18 22 1 26 18 - 0 22 11 1 30 8 0.03 -157 0 0 0 19 20 22 50 39.2 30 103 74 - 0 33 1 1 11 40 - 0 36 51 1 15 29 0.03 -156 0 0 0 4 39 22 50 41.0 31 103 73 - 0 47 42 0 57 0 - 0 51 32 1 0 49 0.03 -155 0 0 - 0 10 3 22 50 42.8 32 103 73 - 1 2 25 0 42 17 - 1 6 15 0 46 7 0.03 -154 0 0 - 0 24 47 22 50 44.7 33 103 72 - 1 17 9 0 27 34 - 1 20 59 0 31 23 0.02 -153 0 0 - 0 39 32 22 50 46.6 34 103 72 - 1 31 54 0 12 49 - 1 35 44 0 16 38 0.02 -152 0 0 - 0 54 18 22 50 48.6 35 103 71 - 1 46 40 - 0 1 57 - 1 50 30 0 1 53 0.02 -151 0 0 - 1 9 4 22 50 50.6 36 103 71 - 2 1 26 - 0 16 43 - 2 5 16 - 0 12 53 0.02 -150 0 0 - 1 23 51 22 50 52.7 37 103 70 - 2 16 13 - 0 31 29 - 2 20 3 - 0 27 40 0.02 -149 0 0 - 1 38 37 22 50 54.8 38 103 69 - 2 30 59 - 0 46 16 - 2 34 49 - 0 42 26 0.02 -148 0 0 - 1 53 23 22 50 57.0 39 103 69 - 2 45 45 - 1 1 1 - 2 49 34 - 0 57 12 0.02 -147 0 0 - 2 8 8 22 50 59.2 40 103 68 - 3 0 30 - 1 15 47 - 3 4 19 - 1 11 57 0.02 -146 0 0 - 2 22 52 22 51 1.5 41 103 67 - 3 15 13 - 1 30 31 - 3 19 3 - 1 26 41 0.02 -145 0 0 - 2 37 34 22 51 3.8 42 103 66 - 3 29 56 - 1 45 14 - 3 33 45 - 1 41 24 0.02 -144 0 0 - 2 52 15 22 51 6.2 43 102 65 - 3 44 36 - 1 59 55 - 3 48 26 - 1 56 5 0.02 -143 0 0 - 3 6 54 22 51 8.6 44 102 65 - 3 59 15 - 2 14 34 - 4 3 4 - 2 10 45 0.02 -142 0 0 - 3 21 30 22 51 11.1 45 102 64 - 4 13 51 - 2 29 11 - 4 17 40 - 2 25 22 0.02 -141 0 0 - 3 36 4 22 51 13.6 46 102 63 - 4 28 24 - 2 43 46 - 4 32 14 - 2 39 56 0.02 -140 0 0 - 3 50 35 22 51 16.2 47 102 62 - 4 42 54 - 2 58 17 - 4 46 44 - 2 54 28 0.02 -139 0 0 - 4 5 3 22 51 18.8 48 102 61 - 4 57 22 - 3 12 45 - 5 1 11 - 3 8 56 0.02 -138 0 0 - 4 19 27 22 51 21.4 49 102 60 - 5 11 45 - 3 27 10 - 5 15 34 - 3 23 21 0.02 -137 0 0 - 4 33 48 22 51 24.1 50 102 59 - 5 26 5 - 3 41 32 - 5 29 54 - 3 37 42 0.02 -136 0 0 - 4 48 4 22 51 26.8 51 102 59 - 5 40 20 - 3 55 49 - 5 44 9 - 3 52 0 0.02 -135 0 0 - 5 2 16 22 51 29.6 52 102 58 - 5 54 31 - 4 10 1 - 5 58 20 - 4 6 12 0.02 -134 0 0 - 5 16 23 22 51 32.4 53 101 57 - 6 8 37 - 4 24 9 - 6 12 27 - 4 20 20 0.02 -133 0 0 - 5 30 25 22 51 35.2 55 101 56 - 6 22 39 - 4 38 12 - 6 26 28 - 4 34 24 0.02 -132 0 0 - 5 44 22 22 51 38.1 56 101 55 - 6 36 34 - 4 52 10 - 6 40 23 - 4 48 21 0.02 -131 0 0 - 5 58 13 22 51 41.0 57 101 54 - 6 50 25 - 5 6 3 - 6 54 14 - 5 2 14 0.02 -130 0 0 - 6 11 58 22 51 43.9 58 101 53 - 7 4 9 - 5 19 49 - 7 7 58 - 5 16 0 0.02 -129 0 0 - 6 25 38 22 51 46.9 59 101 52 - 7 17 47 - 5 33 29 - 7 21 36 - 5 29 41 0.02 -128 0 0 - 6 39 11 22 51 49.8 60 101 51 - 7 31 19 - 5 47 3 - 7 35 7 - 5 43 15 0.02 -127 0 0 - 6 52 37 22 51 52.9 61 100 50 - 7 44 44 - 6 0 31 - 7 48 32 - 5 56 43 0.02 -126 0 0 - 7 5 56 22 51 55.9 62 100 49 - 7 58 2 - 6 13 51 - 8 1 50 - 6 10 3 0.02 -125 0 0 - 7 19 8 22 51 59.0 63 100 48 - 8 11 12 - 6 27 5 - 8 15 1 - 6 23 17 0.02 -124 0 0 - 7 32 13 22 52 2.1 64 100 47 - 8 24 16 - 6 40 11 - 8 28 4 - 6 36 23 0.02 -123 0 0 - 7 45 10 22 52 5.2 65 100 46 - 8 37 11 - 6 53 9 - 8 40 59 - 6 49 21 0.02 -122 0 0 - 7 57 59 22 52 8.4 66 99 45 - 8 49 59 - 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60 0 0 -14 52 5 22 55 26.0 52 271 -14 -15 42 55 -14 1 15 -15 46 38 -13 57 32 0.02 - 59 0 0 -14 51 28 22 55 28.6 51 271 -14 -15 42 19 -14 0 39 -15 46 2 -13 56 56 0.02 - 58 0 0 -14 50 37 22 55 31.2 50 270 -15 -15 41 28 -13 59 48 -15 45 11 -13 56 5 0.02 - 57 0 0 -14 49 32 22 55 33.7 49 270 -16 -15 40 23 -13 58 42 -15 44 6 -13 54 59 0.02 - 56 0 0 -14 48 11 22 55 36.2 48 270 -17 -15 39 3 -13 57 21 -15 42 46 -13 53 38 0.02 - 55 0 0 -14 46 36 22 55 38.6 47 270 -18 -15 37 28 -13 55 46 -15 41 11 -13 52 3 0.02 - 54 0 0 -14 44 47 22 55 41.1 46 269 -19 -15 35 39 -13 53 56 -15 39 22 -13 50 13 0.02 - 53 0 0 -14 42 43 22 55 43.4 45 269 -20 -15 33 35 -13 51 51 -15 37 18 -13 48 8 0.02 - 52 0 0 -14 40 24 22 55 45.8 44 269 -21 -15 31 17 -13 49 32 -15 35 0 -13 45 49 0.02 - 51 0 0 -14 37 51 22 55 48.1 43 268 -22 -15 28 44 -13 46 58 -15 32 28 -13 43 15 0.02 - 50 0 0 -14 35 3 22 55 50.3 43 268 -23 -15 25 57 -13 44 10 -15 29 41 -13 40 27 0.02 - 49 0 0 -14 32 1 22 55 52.5 42 268 -24 -15 22 56 -13 41 7 -15 26 39 -13 37 24 0.02 - 48 0 0 -14 28 45 22 55 54.7 41 268 -25 -15 19 40 -13 37 50 -15 23 24 -13 34 7 0.02 - 47 0 0 -14 25 14 22 55 56.8 40 267 -26 -15 16 10 -13 34 19 -15 19 54 -13 30 35 0.02 - 46 0 0 -14 21 29 22 55 58.9 39 267 -27 -15 12 26 -13 30 33 -15 16 9 -13 26 49 0.02 - 45 0 0 -14 17 30 22 56 1.0 38 267 -27 -15 8 27 -13 26 33 -15 12 11 -13 22 49 0.02 - 44 0 0 -14 13 16 22 56 3.0 37 267 -28 -15 4 15 -13 22 18 -15 7 58 -13 18 35 0.02 - 43 0 0 -14 8 49 22 56 4.9 36 266 -29 -14 59 48 -13 17 50 -15 3 32 -13 14 6 0.02 - 42 0 0 -14 4 7 22 56 6.9 35 266 -30 -14 55 8 -13 13 7 -14 58 51 -13 9 23 0.02 - 41 0 0 -13 59 11 22 56 8.7 34 266 -31 -14 50 13 -13 8 10 -14 53 57 -13 4 27 0.02 - 40 0 0 -13 54 2 22 56 10.5 33 266 -32 -14 45 5 -13 3 0 -14 48 48 -12 59 16 0.02 - 39 0 0 -13 48 38 22 56 12.3 32 265 -33 -14 39 42 -12 57 35 -14 43 26 -12 53 52 0.02 - 38 0 0 -13 43 1 22 56 14.0 31 265 -34 -14 34 6 -12 51 57 -14 37 50 -12 48 13 0.02 - 37 0 0 -13 37 11 22 56 15.7 30 265 -35 -14 28 17 -12 46 5 -14 32 1 -12 42 21 0.02 - 36 0 0 -13 31 6 22 56 17.3 29 265 -36 -14 22 14 -12 40 0 -14 25 58 -12 36 16 0.02 - 35 0 0 -13 24 49 22 56 18.9 28 264 -37 -14 15 57 -12 33 41 -14 19 42 -12 29 57 0.02 - 34 0 0 -13 18 17 22 56 20.5 27 264 -38 -14 9 28 -12 27 8 -14 13 12 -12 23 24 0.02 - 33 0 0 -13 11 33 22 56 21.9 26 264 -39 -14 2 44 -12 20 23 -14 6 29 -12 16 38 0.02 - 32 0 0 -13 4 35 22 56 23.4 25 264 -39 -13 55 48 -12 13 24 -13 59 33 -12 9 39 0.02 - 31 0 0 -12 57 25 22 56 24.7 24 263 -40 -13 48 39 -12 6 12 -13 52 23 -12 2 27 0.02 - 30 0 0 -12 50 1 22 56 26.1 23 263 -41 -13 41 16 -11 58 46 -13 45 1 -11 55 2 0.02 - 29 0 0 -12 42 25 22 56 27.3 22 263 -42 -13 33 41 -11 51 9 -13 37 26 -11 47 24 0.02 - 28 0 0 -12 34 35 22 56 28.6 21 263 -43 -13 25 54 -11 43 18 -13 29 39 -11 39 33 0.02 - 27 0 0 -12 26 33 22 56 29.7 20 263 -44 -13 17 53 -11 35 14 -13 21 38 -11 31 29 0.02 - 26 0 0 -12 18 19 22 56 30.8 19 262 -45 -13 9 40 -11 26 59 -13 13 25 -11 23 14 0.03 - 25 0 0 -12 9 52 22 56 31.9 18 262 -46 -13 1 15 -11 18 30 -13 5 0 -11 14 45 0.03 - 24 0 0 -12 1 13 22 56 32.9 17 262 -47 -12 52 38 -11 9 50 -12 56 23 -11 6 5 0.03 - 23 0 0 -11 52 22 22 56 33.9 16 262 -48 -12 43 48 -11 0 57 -12 47 34 -10 57 12 0.03 - 22 0 0 -11 43 19 22 56 34.8 15 262 -49 -12 34 47 -10 51 53 -12 38 32 -10 48 7 0.03 - 21 0 0 -11 34 5 22 56 35.6 14 261 -49 -12 25 33 -10 42 36 -12 29 19 -10 38 51 0.03 - 20 0 0 -11 24 38 22 56 36.4 13 261 -50 -12 16 9 -10 33 8 -12 19 54 -10 29 23 0.03 - 19 0 0 -11 15 0 22 56 37.1 12 261 -51 -12 6 32 -10 23 29 -12 10 18 -10 19 43 0.03 - 18 0 0 -11 5 11 22 56 37.8 11 261 -52 -11 56 45 -10 13 38 -12 0 31 -10 9 52 0.03 - 17 0 0 -10 55 10 22 56 38.4 10 261 -53 -11 46 46 -10 3 36 -11 50 32 - 9 59 50 0.03 - 16 0 0 -10 44 59 22 56 38.9 9 260 -54 -11 36 36 - 9 53 23 -11 40 22 - 9 49 37 0.03 - 15 0 0 -10 34 37 22 56 39.4 8 260 -55 -11 26 15 - 9 42 59 -11 30 2 - 9 39 13 0.03 - 14 0 0 -10 24 4 22 56 39.9 7 260 -56 -11 15 44 - 9 32 25 -11 19 30 - 9 28 39 0.03 - 13 0 0 -10 13 21 22 56 40.3 6 260 -56 -11 5 2 - 9 21 40 -11 8 49 - 9 17 53 0.04 - 12 0 0 -10 2 27 22 56 40.6 5 260 -57 -10 54 10 - 9 10 45 -10 57 57 - 9 6 58 0.04 - 11 0 0 - 9 51 23 22 56 40.8 4 259 -58 -10 43 8 - 8 59 40 -10 46 55 - 8 55 53 0.04 - 10 0 0 - 9 40 9 22 56 41.1 3 259 -59 -10 31 56 - 8 48 24 -10 35 43 - 8 44 37 0.05 - 9 0 0 - 9 28 46 22 56 41.2 2 259 -60 -10 20 34 - 8 36 59 -10 24 21 - 8 33 12 0.07 - 8 0 0 - 9 17 13 22 56 41.3 1 259 -61 -10 9 2 - 8 25 25 -10 12 50 - 8 21 38 0.11 Uncertainty in time = +/- 1 secs Prediction of 2022 Oct 17.0 Data for the target star ------------------------ * name: UCAC4-395-086831 * constellation : Scutum * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 18 41 13.3941 DE: -11 02 41.055 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 18 41 13.3940 DE: -11 02 41.055 * position source: Gaia EDR3 * standard error: RA,DE [mas]: (0.300,0.200) * V mag [mag]: 12.5 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (41) Daphne asteroid class: ShapeModel asteroid system: multiple bodies approx. diameter [km]: 187 approx. diameter ["]: 0.099 distance from Earth [AU]: 2.61300 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#144 date of fit: 2022 Sep 21 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): 0.020", 0.002", 89.053° remarks: * orbital elements for (41)Daphne : Mean anomaly = 49.0342073537 deg Arg. of pericenter = 45.9315365080 deg Long. of node = 178.0554536239 deg Inclination = 15.7898751662 deg Eccentricity = 0.2744092208 Semimajor axis = 2.7607977079 AU Perihelion dist = 2.0032093601 AU Mag: H = 7.53, G = 0.10 Epoch of elements : MJD 59878.95381944 TDT (2022 Oct 26.9538) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#1442022Sep21 Binary solution 1 : Kepler,5.69,2022,10,26,22.891190,0.000743,-0.020386,18.393659,-2.606968,0.005205,0.000857,-0.000001,0.000000 -98.0411,-11.0229,-167.38,-12.68,False UCAC4-395-086831,18.68705393,-11.0447374,0.00,12.47,0.00,0.0,0,,18.70776534,-11.0228893,0.82,0.00,0,0,1 41,Daphne #1,12.61,187.4,2.6130,0,1,4.204,-8.77,,9.3,0 Peneius,2,443,1.100000,,,,,, 0,48.8293,2022,10,26,45.9315,178.0555,15.7899,0.27441,2.76080,2.00321,7.53,5.0,0.15 1.037,0.0200,0.0018,89,0.0036,Known errors + binary orbit,-1.00,-1,-1,-1 20221026_086831_Ma1,59868.96 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2022 Oct 16, 23:08 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org