IOTA/IOTA-ES occultation update for (13559) Werth / UCAC4 667-040363 event on 2024 Dec 19, 05:54 UT Visible from Summary ------- On 2024 Dec 19 UT, the 11.369 km diameter asteroid (13559) Werth will occult a 10.8 mag star in the constellation Auriga for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 7.16 mag to 17.96 mag (the magnitude of the asteroid) for at most 0.840 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: 97 * date and approx. time of event: 2024 Dec 19, 05:46 - 2024 Dec 19, 06:02 * geocentric midpoint of event [JD]: 2460663.74606716 * magnitude of target star: 10.80 * magnitude drop [mag]: 7.16 * estimated maximum duration [s]: 0.840 * Moon: 83 % sunlit, 51° distance * Sun: 160° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 12 * 1 sigma uncertainty interval [path widths]: +/- 0.39 * 1 sigma uncertainty interval [seconds]: +/- 3.1 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.027, +/- 0.003) * 1 sigma uncertainty ellipse (major, minor, PA): (0.027", 0.003", 88°) * approx speed of asteroid's shadow [km/s]: 13.5220 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 667-040363 by 13559 Werth on 2024 Dec 19 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 172 0 0 5 24 14 6 2 4.7 0 46 4 5 28 33 5 19 56 5 31 54 5 16 35 .... 173 0 0 6 21 27 6 2 4.5 2 47 3 6 25 45 6 17 8 6 29 7 6 13 46 -0.21 174 0 0 7 18 45 6 2 4.0 3 47 1 7 23 4 7 14 26 7 26 26 7 11 4 -0.18 175 0 0 8 16 5 6 2 3.3 4 47 0 8 20 25 8 11 46 8 23 47 8 8 24 -0.17 176 0 0 9 13 26 6 2 2.3 6 47 -1 9 17 45 9 9 6 9 21 8 9 5 44 -0.17 177 0 0 10 10 43 6 2 1.0 7 47 -2 10 15 2 10 6 23 10 18 25 10 3 0 -0.17 178 0 0 11 7 53 6 1 59.5 8 47 -4 11 12 13 11 3 33 11 15 36 11 0 11 -0.16 179 0 0 12 4 55 6 1 57.7 10 48 -5 12 9 15 12 0 35 12 12 38 11 57 13 -0.16 -180 0 0 13 1 45 6 1 55.6 11 48 -6 13 6 5 12 57 25 13 9 28 12 54 3 -0.16 -179 0 0 13 58 20 6 1 53.3 12 48 -7 14 2 40 13 54 0 14 6 3 13 50 38 -0.16 -178 0 0 14 54 38 6 1 50.7 14 48 -9 14 58 58 14 50 18 15 2 20 14 46 56 -0.16 -177 0 0 15 50 35 6 1 47.9 15 49 -10 15 54 55 15 46 16 15 58 17 15 42 54 -0.16 -176 0 0 16 46 10 6 1 44.9 16 49 -11 16 50 30 16 41 51 16 53 52 16 38 29 -0.16 -175 0 0 17 41 20 6 1 41.7 18 49 -12 17 45 39 17 37 1 17 49 1 17 33 40 -0.16 -174 0 0 18 36 2 6 1 38.2 19 50 -14 18 40 21 18 31 44 18 43 42 18 28 23 -0.16 -173 0 0 19 30 14 6 1 34.6 20 50 -15 19 34 32 19 25 57 19 37 53 19 22 36 -0.16 -172 0 0 20 23 55 6 1 30.7 22 50 -16 20 28 12 20 19 37 20 31 33 20 16 17 -0.16 -171 0 0 21 17 1 6 1 26.6 23 51 -17 21 21 18 21 12 44 21 24 38 21 9 24 -0.16 -170 0 0 22 9 31 6 1 22.4 24 51 -18 22 13 47 22 5 15 22 17 7 22 1 56 -0.16 -169 0 0 23 1 24 6 1 18.0 25 51 -19 23 5 39 22 57 9 23 8 58 22 53 50 -0.16 -168 0 0 23 52 37 6 1 13.5 27 52 -20 23 56 52 23 48 23 24 0 10 23 45 4 -0.16 -167 0 0 24 43 9 6 1 8.7 28 52 -22 24 47 23 24 38 55 24 50 41 24 35 38 -0.16 -166 0 0 25 32 59 6 1 3.9 29 53 -23 25 37 12 25 28 46 25 40 29 25 25 29 -0.16 -165 0 0 26 22 5 6 0 58.9 30 53 -24 26 26 17 26 17 53 26 29 33 26 14 37 -0.16 -164 0 0 27 10 26 6 0 53.8 31 54 -25 27 14 37 27 6 15 27 17 52 27 2 59 -0.16 -163 0 0 27 58 1 6 0 48.6 33 54 -26 28 2 11 27 53 51 28 5 26 27 50 36 -0.16 -162 0 0 28 44 49 6 0 43.3 34 55 -27 28 48 58 28 40 40 28 52 12 28 37 26 -0.16 -161 0 0 29 30 49 6 0 37.8 35 55 -28 29 34 57 29 26 42 29 38 10 29 23 29 -0.16 -160 0 0 30 16 1 6 0 32.3 36 56 -29 30 20 8 30 11 55 30 23 21 30 8 43 -0.16 -159 0 0 31 0 24 6 0 26.8 37 57 -30 31 4 30 30 56 19 31 7 42 30 53 8 -0.16 -158 0 0 31 43 58 6 0 21.1 38 57 -31 31 48 2 31 39 54 31 51 13 31 36 43 -0.16 -157 0 0 32 26 42 6 0 15.4 39 58 -32 32 30 45 32 22 38 32 33 55 32 19 29 -0.16 -156 0 0 33 8 35 6 0 9.6 40 59 -33 33 12 37 33 4 33 33 15 46 33 1 24 -0.16 -155 0 0 33 49 38 6 0 3.8 41 59 -33 33 53 39 33 45 37 33 56 47 33 42 30 -0.17 -154 0 0 34 29 50 5 59 57.9 42 60 -34 34 33 50 34 25 51 34 36 57 34 22 44 -0.17 -153 0 0 35 9 12 5 59 52.0 43 61 -35 35 13 11 35 5 14 35 16 17 35 2 8 -0.17 -152 0 0 35 47 44 5 59 46.0 44 61 -36 35 51 41 35 43 47 35 54 46 35 40 42 -0.17 -151 0 0 36 25 25 5 59 40.1 45 62 -37 36 29 20 36 21 29 36 32 24 36 18 25 -0.17 -150 0 0 37 2 15 5 59 34.1 46 63 -38 37 6 10 36 58 21 37 9 13 36 55 18 -0.17 -149 0 0 37 38 16 5 59 28.1 47 64 -38 37 42 9 37 34 23 37 45 11 37 31 21 -0.17 -148 0 0 38 13 27 5 59 22.1 48 65 -39 38 17 19 38 9 35 38 20 20 38 6 34 -0.17 -147 0 0 38 47 48 5 59 16.1 49 65 -40 38 51 39 38 43 57 38 54 39 38 40 58 -0.17 -146 0 0 39 21 20 5 59 10.1 50 66 -41 39 25 10 39 17 31 39 28 9 39 14 32 -0.17 -145 0 0 39 54 4 5 59 4.0 51 67 -42 39 57 52 39 50 16 40 0 50 39 47 18 -0.17 -144 0 0 40 26 0 5 58 58.0 52 68 -42 40 29 47 40 22 13 40 32 44 40 19 16 -0.17 -143 0 0 40 57 8 5 58 52.0 53 69 -43 41 0 53 40 53 22 41 3 49 40 50 26 -0.17 -142 0 0 41 27 28 5 58 46.1 54 70 -44 41 31 13 41 23 44 41 34 8 41 20 49 -0.17 -141 0 0 41 57 3 5 58 40.1 55 71 -44 42 0 46 41 53 19 42 3 40 41 50 26 -0.17 -140 0 0 42 25 51 5 58 34.1 55 72 -45 42 29 32 42 22 9 42 32 25 42 19 16 -0.17 -139 0 0 42 53 53 5 58 28.2 56 73 -46 42 57 34 42 50 12 43 0 26 42 47 21 -0.17 -138 0 0 43 21 11 5 58 22.3 57 74 -46 43 24 50 43 17 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54 51 -0.19 - 99 0 0 53 5 44 5 54 53.6 79 149 -59 53 8 53 53 2 35 53 11 20 53 0 8 -0.19 - 98 0 0 53 10 35 5 54 48.7 79 153 -60 53 13 43 53 7 27 53 16 10 53 5 0 -0.19 - 97 0 0 53 15 0 5 54 43.8 79 157 -60 53 18 8 53 11 52 53 20 35 53 9 25 -0.19 - 96 0 0 53 18 59 5 54 39.0 79 161 -60 53 22 7 53 15 51 53 24 34 53 13 25 -0.19 - 95 0 0 53 22 33 5 54 34.1 79 165 -60 53 25 40 53 19 25 53 28 7 53 16 59 -0.19 - 94 0 0 53 25 41 5 54 29.3 79 169 -60 53 28 48 53 22 33 53 31 14 53 20 7 -0.19 - 93 0 0 53 28 23 5 54 24.4 79 173 -60 53 31 31 53 25 16 53 33 57 53 22 50 -0.19 - 92 0 0 53 30 41 5 54 19.6 79 177 -60 53 33 48 53 27 34 53 36 14 53 25 8 -0.19 - 91 0 0 53 32 33 5 54 14.8 79 181 -60 53 35 40 53 29 26 53 38 6 53 27 0 -0.19 - 90 0 0 53 34 0 5 54 10.0 79 185 -60 53 37 7 53 30 53 53 39 32 53 28 27 -0.19 - 89 0 0 53 35 1 5 54 5.2 79 189 -60 53 38 8 53 31 55 53 40 34 53 29 29 -0.19 - 88 0 0 53 35 38 5 54 0.4 79 193 -60 53 38 45 53 32 31 53 41 11 53 30 6 -0.19 - 87 0 0 53 35 50 5 53 55.6 79 197 -60 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36 53 30 37 4 23 36 50 27 -0.17 - 23 0 0 36 20 22 5 48 26.0 39 300 -33 36 24 18 36 16 26 36 27 22 36 13 22 -0.17 - 22 0 0 35 42 28 5 48 20.7 38 301 -32 35 46 26 35 38 31 35 49 31 35 35 26 -0.17 - 21 0 0 35 3 43 5 48 15.4 37 301 -32 35 7 42 34 59 45 35 10 48 34 56 39 -0.17 - 20 0 0 34 24 7 5 48 10.2 36 302 -31 34 28 8 34 20 8 34 31 15 34 17 1 -0.17 - 19 0 0 33 43 41 5 48 5.0 35 303 -30 33 47 42 33 39 39 33 50 50 33 36 31 -0.17 - 18 0 0 33 2 23 5 47 59.9 34 303 -29 33 6 25 32 58 20 33 9 34 32 55 11 -0.17 - 17 0 0 32 20 14 5 47 54.8 33 304 -28 32 24 18 32 16 10 32 27 28 32 13 0 -0.17 - 16 0 0 31 37 15 5 47 49.9 32 304 -27 31 41 19 31 33 10 31 44 30 31 29 59 -0.17 - 15 0 0 30 53 25 5 47 45.0 31 305 -26 30 57 31 30 49 19 31 0 43 30 46 7 -0.17 - 14 0 0 30 8 45 5 47 40.2 30 306 -25 30 12 52 30 4 38 30 16 5 30 1 25 -0.17 - 13 0 0 29 23 15 5 47 35.5 29 306 -24 29 27 24 29 19 7 29 30 37 29 15 54 -0.17 - 12 0 0 28 36 57 5 47 30.9 28 307 -23 28 41 7 28 32 48 28 44 21 28 29 33 -0.17 - 11 0 0 27 49 51 5 47 26.5 26 307 -22 27 54 1 27 45 40 27 57 16 27 42 25 -0.17 - 10 0 0 27 1 57 5 47 22.1 25 308 -21 27 6 8 26 57 45 27 9 24 26 54 30 -0.17 - 9 0 0 26 13 17 5 47 18.0 24 308 -20 26 17 29 26 9 4 26 20 46 26 5 48 -0.17 - 8 0 0 25 23 51 5 47 13.9 23 309 -19 25 28 5 25 19 38 25 31 22 25 16 21 -0.17 - 7 0 0 24 33 42 5 47 10.0 22 309 -18 24 37 56 24 29 28 24 41 14 24 26 9 -0.17 - 6 0 0 23 42 49 5 47 6.3 20 309 -16 23 47 5 23 38 34 23 50 23 23 35 16 -0.17 - 5 0 0 22 51 16 5 47 2.7 19 310 -15 22 55 32 22 47 0 22 58 51 22 43 41 -0.17 - 4 0 0 21 59 3 5 46 59.4 18 310 -14 22 3 19 21 54 46 22 6 39 21 51 26 -0.17 - 3 0 0 21 6 11 5 46 56.2 17 311 -13 21 10 29 21 1 54 21 13 49 20 58 34 -0.17 - 2 0 0 20 12 44 5 46 53.2 15 311 -12 20 17 2 20 8 26 20 20 23 20 5 5 -0.17 - 1 0 0 19 18 42 5 46 50.4 14 311 -11 19 23 1 19 14 24 19 26 22 19 11 2 -0.18 0 0 0 18 24 9 5 46 47.9 13 312 -9 18 28 28 18 19 50 18 31 50 18 16 28 -0.18 1 0 0 17 29 5 5 46 45.5 12 312 -8 17 33 25 17 24 46 17 36 47 17 21 24 -0.18 2 0 0 16 33 34 5 46 43.4 10 312 -7 16 37 54 16 29 15 16 41 17 16 25 52 -0.18 3 0 0 15 37 38 5 46 41.6 9 313 -6 15 41 59 15 33 18 15 45 21 15 29 56 -0.19 4 0 0 14 41 20 5 46 40.0 8 313 -5 14 45 40 14 37 0 14 49 3 14 33 37 -0.19 5 0 0 13 44 42 5 46 38.6 6 313 -3 13 49 2 13 40 21 13 52 25 13 36 58 -0.20 6 0 0 12 47 46 5 46 37.5 5 313 -2 12 52 7 12 43 26 12 55 30 12 40 3 -0.22 7 0 0 11 50 37 5 46 36.7 3 314 -1 11 54 57 11 46 16 11 58 21 11 42 53 -0.24 8 0 0 10 53 16 5 46 36.1 2 314 1 10 57 36 10 48 55 11 0 59 10 45 32 -0.29 9 0 0 9 55 46 5 46 35.8 1 314 2 10 0 6 9 51 25 10 3 29 9 48 3 -0.55 Uncertainty in time = +/- 3 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: UCAC4 667-040363 * constellation : Auriga * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 05 40 40.1077 DE: +43 16 39.862 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 05 40 40.1077 DE: +43 16 39.863 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 10.8 * B mag [mag]: 11.2 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (13559) Werth asteroid class: approx. diameter [km]: 11 approx. diameter ["]: 0.007 distance from Earth [AU]: 2.12610 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#46 date of fit: 2023 Apr 27 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): 0.027", 0.003", 87.525° remarks: * orbital elements for (13559)Werth : Mean anomaly = 98.1987255597 deg Arg. of pericenter = 338.5016938477 deg Long. of node = 359.0334285474 deg Inclination = 13.6483125441 deg Eccentricity = 0.0992719670 Semimajor axis = 2.9987566825 AU Perihelion dist = 2.7010642082 AU Mag: H = 13.40, G = 0.15 Epoch of elements : MJD 60663.24606849 TDT (2024 Dec 19.2461) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#462023Apr27,0.84,2024,12,19,5.905612,-0.008650,0.173854,-7.622737,-0.379299,0.000168,-0.002039,0.000001,0.000000 -91.2877,43.2915,90.71,-23.42,False UCAC4 667-040363,5.67780769,43.2777395,11.24,10.80,10.56,0.0,0,,5.70833789,43.2914996,7.16,6.95,0,0,0 13559,Werth,17.96,11.369,2.1261,0,0,-2.887,-1.57,,1.0,0 0,98.1520,2024,12,19,338.5017,359.0334,13.6483,0.09927,2.99876,2.70106,13.40,5.0,0.15 1.390,0.0273,0.0029,88,0.0029,Known errors,1.02,0,-1,-1 20241219_040363,60140.75 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 17:54 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org