IOTA/IOTA-ES occultation update for (388) Charybdis / UCAC4-587-008138 event on 2023 Jan 01, 22:46 UT Visible from Europe, Russia Summary ------- On 2023 Jan 01 UT, the 122.8 km diameter asteroid (388) Charybdis will occult a 12.5 mag star in the constellation Aries for observers along a path across Europe, Russia. In the case of an occultation, the combined light of the asteroid and the star will drop by 1.52 mag to 13.71 mag (the magnitude of the asteroid) for at most 23.750 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 Jan 01, 22:26 - 2023 Jan 01, 23:06 * geocentric midpoint of event [JD]: 2459946.44889963 * magnitude of target star: 12.50 * magnitude drop [mag]: 1.52 * estimated maximum duration [s]: 23.750 * Moon: 78 % sunlit, 14° distance * Sun: 134° distance * rough path description: Europe, Russia Additional comments ------------------- RUWE high The occultation path -------------------- * approximate projected width [km]: 128 * 1 sigma uncertainty interval [path widths]: +/- 0.10 * 1 sigma uncertainty interval [seconds]: +/- 6.5 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.021, +/- 0.007) * 1 sigma uncertainty ellipse (major, minor, PA): (0.022", 0.001", 71°) * approx speed of asteroid's shadow [km/s]: 5.1713 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4-587-008138 by 388 Charybdis on 2023 Jan 1 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 ' " Longitude Longitude Longitude Longitude -114 50 48 -19 0 0 23 6 7.7 1 61 43 ... .. .. -113 38 42 ... .. .. -113 24 45 .... -113 2 41 -18 0 0 23 6 6.4 3 60 41 -114 13 36 -111 53 12 -114 27 41 -111 39 44 -0.21 -111 19 29 -17 0 0 23 6 3.7 5 59 39 -112 27 57 -110 12 15 -112 41 32 -109 59 13 -0.23 -109 40 33 -16 0 0 23 5 59.7 7 59 37 -110 46 53 -108 35 19 -111 0 2 -108 22 39 -0.24 -108 5 25 -15 0 0 23 5 54.5 8 59 35 -109 9 52 -107 1 56 -109 22 38 -106 49 35 -0.24 -106 33 38 -14 0 0 23 5 48.2 10 58 34 -107 36 26 -105 31 43 -107 48 52 -105 19 40 -0.24 -105 4 52 -13 0 0 23 5 40.9 12 58 32 -106 6 12 -104 4 20 -106 18 19 -103 52 33 -0.24 -103 38 49 -12 0 0 23 5 32.6 13 58 30 -104 38 50 -102 39 31 -104 50 41 -102 27 58 -0.24 -102 15 12 -11 0 0 23 5 23.4 15 57 29 -103 14 2 -101 17 1 -103 25 38 -101 5 41 -0.24 -100 53 48 -10 0 0 23 5 13.4 17 57 27 -101 51 34 - 99 56 37 -102 2 57 - 99 45 29 -0.24 - 99 34 24 - 9 0 0 23 5 2.5 18 57 26 -100 31 12 - 98 38 8 -100 42 25 - 98 27 10 -0.24 - 98 16 50 - 8 0 0 23 4 50.9 20 57 24 - 99 12 46 - 97 21 23 - 99 23 48 - 97 10 34 -0.24 - 97 0 56 - 7 0 0 23 4 38.5 21 57 23 - 97 56 6 - 96 6 14 - 98 6 58 - 95 55 33 -0.24 - 95 46 33 - 6 0 0 23 4 25.4 23 57 21 - 96 41 1 - 94 52 31 - 96 51 44 - 94 41 58 -0.24 - 94 33 34 - 5 0 0 23 4 11.6 25 57 20 - 95 27 23 - 93 40 8 - 95 37 59 - 93 29 42 -0.24 - 93 21 51 - 4 0 0 23 3 57.2 26 57 18 - 94 15 6 - 92 28 58 - 94 25 35 - 92 18 39 -0.24 - 92 11 18 - 3 0 0 23 3 42.1 27 57 17 - 93 4 2 - 91 18 54 - 93 14 24 - 91 8 40 -0.24 - 91 1 49 - 2 0 0 23 3 26.5 29 57 16 - 91 54 5 - 90 9 52 - 92 4 22 - 89 59 43 -0.24 - 89 53 18 - 1 0 0 23 3 10.2 30 57 14 - 90 45 9 - 89 1 44 - 90 55 21 - 88 51 40 -0.24 - 88 45 40 0 0 0 23 2 53.4 32 57 13 - 89 37 9 - 87 54 27 - 89 47 16 - 87 44 26 -0.24 - 87 38 50 1 0 0 23 2 36.0 33 57 11 - 88 29 59 - 86 47 56 - 88 40 3 - 86 37 59 -0.24 Latitude Latitude Latitude Latitude - 87 0 0 1 35 11 23 2 25.5 34 57 11 2 21 30 0 49 4 2 30 36 0 40 3 -0.25 - 86 0 0 2 29 57 23 2 8.9 35 58 9 3 16 29 1 43 38 3 25 38 1 34 34 -0.25 - 85 0 0 3 25 12 23 1 51.7 37 58 8 4 11 56 2 38 41 4 21 7 2 29 35 -0.25 - 84 0 0 4 20 54 23 1 34.0 38 58 7 5 7 50 3 34 11 5 17 4 3 25 3 -0.25 - 83 0 0 5 17 1 23 1 15.7 39 59 6 6 4 9 4 30 6 6 13 25 4 20 56 -0.25 - 82 0 0 6 13 30 23 0 56.9 40 59 5 7 0 49 5 26 24 7 10 7 5 17 12 -0.25 - 81 0 0 7 10 19 23 0 37.5 42 59 3 7 57 49 6 23 3 8 7 10 6 13 49 -0.25 - 80 0 0 8 7 27 23 0 17.7 43 60 2 8 55 7 7 20 0 9 4 29 7 10 44 -0.25 - 79 0 0 9 4 49 22 59 57.4 44 60 1 9 52 40 8 17 13 10 2 4 8 7 55 -0.25 - 78 0 0 10 2 25 22 59 36.6 45 61 0 10 50 25 9 14 40 10 59 51 9 5 20 -0.25 - 77 0 0 11 0 12 22 59 15.3 47 61 -1 11 48 21 10 12 18 11 57 49 10 2 56 -0.25 - 76 0 0 11 58 6 22 58 53.7 48 62 -3 12 46 24 11 10 4 12 55 54 11 0 41 -0.26 - 75 0 0 12 56 6 22 58 31.7 49 63 -4 13 44 32 12 7 57 13 54 3 11 58 32 -0.26 - 74 0 0 13 54 10 22 58 9.3 50 63 -5 14 42 43 13 5 53 14 52 16 12 56 27 -0.26 - 73 0 0 14 52 14 22 57 46.5 52 64 -6 15 40 53 14 3 50 15 50 28 13 54 23 -0.26 - 72 0 0 15 50 15 22 57 23.5 53 65 -7 16 39 1 15 1 46 16 48 37 14 52 17 -0.26 - 71 0 0 16 48 13 22 57 0.2 54 66 -9 17 37 5 15 59 38 17 46 41 15 50 8 -0.26 - 70 0 0 17 46 3 22 56 36.6 55 67 -10 18 35 0 16 57 23 18 44 38 16 47 52 -0.26 - 69 0 0 18 43 44 22 56 12.7 56 68 -11 19 32 46 17 55 0 19 42 25 17 45 28 -0.26 - 68 0 0 19 41 13 22 55 48.7 57 69 -12 20 30 19 18 52 25 20 39 58 18 42 53 -0.27 - 67 0 0 20 38 28 22 55 24.5 59 71 -13 21 27 37 19 49 36 21 37 17 19 40 4 -0.27 - 66 0 0 21 35 25 22 55 0.1 60 72 -14 22 24 37 20 46 32 22 34 18 20 36 58 -0.27 - 65 0 0 22 32 4 22 54 35.6 61 73 -15 23 21 18 21 43 8 23 30 59 21 33 35 -0.27 - 64 0 0 23 28 21 22 54 11.1 62 75 -16 24 17 37 22 39 24 24 27 18 22 29 51 -0.27 - 63 0 0 24 24 15 22 53 46.4 63 77 -17 25 13 31 23 35 18 25 23 13 23 25 44 -0.27 - 62 0 0 25 19 43 22 53 21.8 64 79 -18 26 8 59 24 30 46 26 18 41 24 21 12 -0.28 - 61 0 0 26 14 43 22 52 57.1 65 80 -19 27 3 59 25 25 46 27 13 40 25 16 13 -0.28 - 60 0 0 27 9 14 22 52 32.4 66 83 -21 27 58 28 26 20 18 28 8 9 26 10 45 -0.28 - 59 0 0 28 3 12 22 52 7.8 66 85 -22 28 52 24 27 14 19 29 2 5 27 4 46 -0.28 - 58 0 0 28 56 37 22 51 43.3 67 87 -23 29 45 47 28 7 46 29 55 27 27 58 14 -0.28 - 57 0 0 29 49 26 22 51 18.8 68 90 -23 30 38 33 29 0 39 30 48 13 28 51 7 -0.28 - 56 0 0 30 41 39 22 50 54.5 69 92 -24 31 30 42 29 52 55 31 40 21 29 43 24 -0.28 - 55 0 0 31 33 13 22 50 30.3 70 95 -25 32 22 11 30 44 34 32 31 49 30 35 4 -0.29 - 54 0 0 32 24 7 22 50 6.2 70 98 -26 33 12 59 31 35 33 33 22 37 31 26 4 -0.29 - 53 0 0 33 14 19 22 49 42.3 71 102 -27 34 3 6 32 25 51 34 12 42 32 16 23 -0.29 - 52 0 0 34 3 49 22 49 18.7 71 105 -28 34 52 29 33 15 27 35 2 4 33 6 1 -0.29 - 51 0 0 34 52 34 22 48 55.2 72 108 -29 35 41 8 34 4 20 35 50 41 33 54 55 -0.29 - 50 0 0 35 40 35 22 48 32.0 72 112 -30 36 29 1 34 52 28 36 38 33 34 43 5 -0.29 - 49 0 0 36 27 50 22 48 9.0 73 116 -31 37 16 7 35 39 51 37 25 38 35 30 29 -0.29 - 48 0 0 37 14 18 22 47 46.2 73 120 -31 38 2 26 36 26 28 38 11 55 36 17 8 -0.30 - 47 0 0 37 59 58 22 47 23.8 73 124 -32 38 47 57 37 12 18 38 57 24 37 2 59 -0.30 - 46 0 0 38 44 50 22 47 1.6 73 128 -33 39 32 39 37 57 20 39 42 4 37 48 3 -0.30 - 45 0 0 39 28 54 22 46 39.7 73 132 -34 40 16 32 38 41 34 40 25 55 38 32 19 -0.30 - 44 0 0 40 12 8 22 46 18.1 73 136 -35 40 59 35 39 24 59 41 8 56 39 15 46 -0.30 - 43 0 0 40 54 32 22 45 56.8 73 139 -35 41 41 48 40 7 34 41 51 7 39 58 24 -0.30 - 42 0 0 41 36 7 22 45 35.9 73 143 -36 42 23 11 40 49 20 42 32 27 40 40 12 -0.30 - 41 0 0 42 16 51 22 45 15.2 73 147 -37 43 3 43 41 30 17 43 12 56 41 21 11 -0.30 - 40 0 0 42 56 45 22 44 54.9 73 151 -37 43 43 24 42 10 23 43 52 35 42 1 20 -0.30 - 39 0 0 43 35 48 22 44 34.9 72 154 -38 44 22 15 42 49 39 44 31 23 42 40 39 -0.31 - 38 0 0 44 14 2 22 44 15.3 72 158 -38 45 0 14 43 28 6 45 9 20 43 19 7 -0.31 - 37 0 0 44 51 25 22 43 55.9 72 161 -39 45 37 24 44 5 42 45 46 27 43 56 47 -0.31 - 36 0 0 45 27 58 22 43 37.0 71 164 -40 46 13 43 44 42 29 46 22 43 44 33 36 -0.31 - 35 0 0 46 3 41 22 43 18.3 71 167 -40 46 49 11 45 18 26 46 58 9 45 9 36 -0.31 - 34 0 0 46 38 34 22 43 0.0 70 170 -41 47 23 50 45 53 34 47 32 45 45 44 46 -0.31 - 33 0 0 47 12 38 22 42 42.0 70 172 -41 47 57 40 46 27 52 48 6 32 46 19 8 -0.31 - 32 0 0 47 45 54 22 42 24.4 70 175 -42 48 30 41 47 1 22 48 39 29 46 52 40 -0.31 - 31 0 0 48 18 21 22 42 7.1 69 177 -42 49 2 53 47 34 4 49 11 39 47 25 25 -0.31 - 30 0 0 48 50 0 22 41 50.1 69 180 -43 49 34 17 48 5 58 49 43 0 47 57 22 -0.31 - 29 0 0 49 20 52 22 41 33.4 68 182 -43 50 4 54 48 37 5 50 13 33 48 28 32 -0.31 - 28 0 0 49 50 57 22 41 17.1 67 184 -44 50 34 43 49 7 25 50 43 20 48 58 54 -0.31 - 27 0 0 50 20 16 22 41 1.0 67 186 -44 51 3 47 49 36 59 51 12 20 49 28 31 -0.31 - 26 0 0 50 48 49 22 40 45.3 66 188 -44 51 32 5 50 5 47 51 40 35 49 57 22 -0.31 - 25 0 0 51 16 37 22 40 29.9 66 190 -45 51 59 37 50 33 50 52 8 5 50 25 28 -0.31 - 24 0 0 51 43 40 22 40 14.8 65 192 -45 52 26 26 51 1 8 52 34 50 50 52 50 -0.31 - 23 0 0 52 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27 24.4 14 298 -38 55 57 23 54 36 32 56 5 21 54 28 39 -0.29 80 0 0 54 55 9 22 27 20.8 13 299 -38 55 35 56 54 14 33 55 43 57 54 6 36 -0.29 81 0 0 54 32 42 22 27 17.3 13 300 -37 55 13 46 53 51 49 55 21 50 53 43 49 -0.29 82 0 0 54 9 31 22 27 13.9 12 300 -37 54 50 51 53 28 21 54 58 58 53 20 18 -0.29 83 0 0 53 45 33 22 27 10.7 11 301 -37 54 27 11 53 4 6 54 35 22 52 56 0 -0.29 84 0 0 53 20 49 22 27 7.6 11 302 -36 54 2 45 52 39 5 54 10 59 52 30 55 -0.29 85 0 0 52 55 17 22 27 4.6 10 303 -36 53 37 31 52 13 15 53 45 49 52 5 2 -0.29 86 0 0 52 28 56 22 27 1.8 9 304 -35 53 11 28 51 46 36 53 19 49 51 38 19 -0.29 87 0 0 52 1 45 22 26 59.2 8 304 -34 52 44 35 51 19 6 52 53 0 51 10 46 -0.29 88 0 0 51 33 42 22 26 56.7 8 305 -34 52 16 51 50 50 44 52 25 20 50 42 20 -0.30 89 0 0 51 4 46 22 26 54.5 7 306 -33 51 48 15 50 21 30 51 56 47 50 13 2 -0.30 90 0 0 50 34 56 22 26 52.4 6 307 -33 51 18 44 49 51 20 51 27 21 49 42 49 -0.30 91 0 0 50 4 11 22 26 50.6 5 308 -32 50 48 19 49 20 16 50 56 59 49 11 40 -0.31 92 0 0 49 32 29 22 26 48.9 4 308 -31 50 16 57 48 48 14 50 25 42 48 39 35 -0.32 93 0 0 48 59 50 22 26 47.6 4 309 -31 49 44 38 48 15 14 49 53 26 48 6 31 -0.34 94 0 0 48 26 11 22 26 46.5 3 310 -30 49 11 19 47 41 15 49 20 12 47 32 28 -0.36 95 0 0 47 51 31 22 26 45.7 2 311 -29 48 37 0 47 6 15 48 45 57 46 57 24 -0.41 96 0 0 47 15 50 22 26 45.1 1 311 -29 48 1 40 46 30 13 48 10 40 46 21 18 -0.57 97 0 0 .. .. .... .. .. .. .. .. .. 47 25 16 .. .. .. 47 34 21 .. .. .. .... Uncertainty in time = +/- 7 secs Prediction of 2022 Dec 1.1 Data for the target star ------------------------ * name: UCAC4-587-008138 * constellation : Aries * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 03 25 59.1042 DE: +27 22 36.768 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 03 25 59.1042 DE: +27 22 36.768 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.500,0.400) * V mag [mag]: 12.5 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (388) Charybdis asteroid class: approx. diameter [km]: 123 approx. diameter ["]: 0.074 distance from Earth [AU]: 2.27310 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#118 date of fit: 2022 Nov 22 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): 0.022", 0.001", 71.054° remarks: * orbital elements for (388)Charybdis : Mean anomaly = 98.3652742409 deg Arg. of pericenter = 329.4872763130 deg Long. of node = 354.1888944415 deg Inclination = 6.4507216413 deg Eccentricity = 0.0657126532 Semimajor axis = 3.0028519600 AU Perihelion dist = 2.8055265904 AU Mag: H = 8.71, G = 0.07 Epoch of elements : MJD 59945.94881945 TDT (2023 Jan 01.9488) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#1182022Nov22,23.75,2023,1,1,22.773591,-0.175666,0.222594,-2.290905,-1.808686,0.004276,0.000460,0.000001,0.000000 -31.0842,27.4586,-160.69,-22.96,False UCAC4-587-008138,3.43308452,27.3768801,0.00,12.50,0.00,0.0,0,,3.45624267,27.4585896,1.52,0.00,0,0,0 388,Charybdis,13.71,122.8,2.2731,0,0,-0.665,-7.00,,7.2,0 0,98.1856,2023,1,1,329.4873,354.1889,6.4507,0.06571,3.00285,2.80553,8.74,5.0,0.15 1.098,0.0217,0.0013,71,0.0073,Known errors,-1.00,-1,-1,-1 20230101_008138,59914.09 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2022 Dec 01, 02:07 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org