IOTA/IOTA-ES occultation update for (18399) Tentoumushi / UCAC4 300-142196 event on 2024 Nov 02, 00:12 UT Visible from Summary ------- On 2024 Nov 02 UT, the 23.7032773031025 km diameter asteroid (18399) Tentoumushi will occult a 10.8 mag star in the constellation Scorpius for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 8.10 mag to 18.85 mag (the magnitude of the asteroid) for at most 0.720 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 Nov 02, 00:09 - 2024 Nov 02, 00:16 * geocentric midpoint of event [JD]: 2460616.50902675 * magnitude of target star: 10.75 * magnitude drop [mag]: 8.10 * estimated maximum duration [s]: 0.720 * Moon: 0 % sunlit, 43° distance * Sun: 49° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 25 * 1 sigma uncertainty interval [path widths]: +/- 0.39 * 1 sigma uncertainty interval [seconds]: +/- 1.0 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.012, +/- 0.004) * 1 sigma uncertainty ellipse (major, minor, PA): (0.012", 0.001", 109°) * approx speed of asteroid's shadow [km/s]: 33.8389 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 300-142196 by 18399 Tentoumushi on 2024 Nov 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 143 0 0 14 38 22 0 9 56.4 0 121 48 14 30 28 14 46 16 14 24 19 14 52 26 .... 144 0 0 14 2 43 0 9 56.5 2 122 49 13 54 49 14 10 37 13 48 40 14 16 47 -0.03 145 0 0 13 26 59 0 9 56.6 3 122 50 13 19 5 13 34 53 13 12 56 13 41 3 -0.11 146 0 0 12 51 12 0 9 56.9 4 122 51 12 43 18 12 59 6 12 37 9 13 5 16 -0.14 147 0 0 12 15 22 0 9 57.1 5 122 52 12 7 28 12 23 16 12 1 19 12 29 26 -0.16 148 0 0 11 39 31 0 9 57.5 6 123 54 11 31 38 11 47 25 11 25 29 11 53 34 -0.17 149 0 0 11 3 40 0 9 58.0 7 123 55 10 55 47 11 11 34 10 49 39 11 17 43 -0.18 150 0 0 10 27 51 0 9 58.5 8 123 56 10 19 58 10 35 44 10 13 49 10 41 53 -0.19 151 0 0 9 52 3 0 9 59.1 10 123 57 9 44 11 9 59 56 9 38 3 10 6 4 -0.19 152 0 0 9 16 19 0 9 59.8 11 123 58 9 8 27 9 24 11 9 2 19 9 30 19 -0.20 153 0 0 8 40 39 0 10 0.6 12 124 59 8 32 48 8 48 31 8 26 41 8 54 39 -0.20 154 0 0 8 5 5 0 10 1.4 13 124 60 7 57 15 8 12 57 7 51 8 8 19 4 -0.20 155 0 0 7 29 38 0 10 2.3 14 124 61 7 21 48 7 37 29 7 15 42 7 43 36 -0.20 156 0 0 6 54 19 0 10 3.3 15 124 62 6 46 30 7 2 9 6 40 24 7 8 16 -0.20 157 0 0 6 19 9 0 10 4.4 17 124 63 6 11 20 6 26 58 6 5 15 6 33 5 -0.21 158 0 0 5 44 9 0 10 5.5 18 124 64 5 36 21 5 51 58 5 30 16 5 58 3 -0.21 159 0 0 5 9 21 0 10 6.7 19 124 65 5 1 33 5 17 8 4 55 29 5 23 13 -0.21 160 0 0 4 34 44 0 10 8.0 20 124 67 4 26 57 4 42 31 4 20 54 4 48 35 -0.21 161 0 0 4 0 21 0 10 9.4 21 125 68 3 52 35 4 8 7 3 46 32 4 14 11 -0.21 162 0 0 3 26 12 0 10 10.8 22 125 69 3 18 27 3 33 57 3 12 25 3 40 0 -0.21 163 0 0 2 52 19 0 10 12.4 23 125 70 2 44 35 3 0 3 2 38 33 3 6 5 -0.21 164 0 0 2 18 42 0 10 13.9 25 125 71 2 10 58 2 26 25 2 4 58 2 32 26 -0.21 165 0 0 1 45 22 0 10 15.6 26 125 71 1 37 39 1 53 4 1 31 39 1 59 5 -0.21 166 0 0 1 12 20 0 10 17.3 27 125 72 1 4 39 1 20 1 0 58 39 1 26 1 -0.21 167 0 0 0 39 37 0 10 19.1 28 125 73 0 31 57 0 47 17 0 25 58 0 53 16 -0.21 168 0 0 0 7 14 0 10 20.9 29 125 74 - 0 0 25 0 14 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35 12 -15 54 18 -15 29 50 -0.23 -107 0 0 -15 30 38 0 14 29.1 58 237 13 -15 37 31 -15 23 45 -15 42 53 -15 18 22 -0.23 -106 0 0 -15 18 39 0 14 31.9 58 237 12 -15 25 33 -15 11 45 -15 30 55 -15 6 22 -0.23 -105 0 0 -15 6 7 0 14 34.8 57 237 11 -15 13 2 -14 59 12 -15 18 25 -14 53 49 -0.23 -104 0 0 -14 53 3 0 14 37.6 56 238 10 -14 59 59 -14 46 8 -15 5 22 -14 40 43 -0.23 -103 0 0 -14 39 27 0 14 40.3 55 238 9 -14 46 23 -14 32 30 -14 51 47 -14 27 5 -0.23 -102 0 0 -14 25 18 0 14 43.1 54 238 8 -14 32 15 -14 18 20 -14 37 40 -14 12 55 -0.23 -101 0 0 -14 10 36 0 14 45.8 53 238 7 -14 17 34 -14 3 38 -14 23 0 -13 58 12 -0.23 -100 0 0 -13 55 22 0 14 48.6 52 238 6 -14 2 21 -13 48 23 -14 7 47 -13 42 56 -0.23 - 99 0 0 -13 39 35 0 14 51.2 51 238 5 -13 46 35 -13 32 35 -13 52 2 -13 27 8 -0.23 - 98 0 0 -13 23 17 0 14 53.9 50 239 4 -13 30 17 -13 16 16 -13 35 45 -13 10 47 -0.23 - 97 0 0 -13 6 25 0 14 56.5 49 239 3 -13 13 27 -12 59 23 -13 18 56 -12 53 54 -0.23 - 96 0 0 -12 49 2 0 14 59.1 48 239 1 -12 56 4 -12 41 59 -13 1 34 -12 36 29 -0.23 - 95 0 0 -12 31 6 0 15 1.7 47 239 0 -12 38 10 -12 24 2 -12 43 40 -12 18 31 -0.23 - 94 0 0 -12 12 38 0 15 4.2 46 239 -1 -12 19 43 -12 5 33 -12 25 14 -12 0 1 -0.23 - 93 0 0 -11 53 38 0 15 6.7 45 239 -2 -12 0 43 -11 46 31 -12 6 15 -11 40 59 -0.23 - 92 0 0 -11 34 5 0 15 9.1 44 239 -3 -11 41 12 -11 26 58 -11 46 45 -11 21 25 -0.23 - 91 0 0 -11 14 1 0 15 11.6 43 239 -4 -11 21 10 -11 6 53 -11 26 43 -11 1 19 -0.23 - 90 0 0 -10 53 26 0 15 14.0 42 239 -5 -11 0 35 -10 46 16 -11 6 9 -10 40 41 -0.23 - 89 0 0 -10 32 18 0 15 16.3 41 239 -6 -10 39 29 -10 25 8 -10 45 4 -10 19 32 -0.23 - 88 0 0 -10 10 39 0 15 18.6 40 239 -7 -10 17 51 -10 3 28 -10 23 27 - 9 57 51 -0.23 - 87 0 0 - 9 48 29 0 15 20.9 39 239 -8 - 9 55 42 - 9 41 16 -10 1 19 - 9 35 39 -0.23 - 86 0 0 - 9 25 48 0 15 23.1 38 239 -9 - 9 33 2 - 9 18 34 - 9 38 40 - 9 12 55 -0.23 - 85 0 0 - 9 2 36 0 15 25.3 37 239 -10 - 9 9 52 - 8 55 21 - 9 15 31 - 8 49 41 -0.23 - 84 0 0 - 8 38 54 0 15 27.4 36 239 -11 - 8 46 10 - 8 31 37 - 8 51 50 - 8 25 57 -0.23 - 83 0 0 - 8 14 41 0 15 29.5 35 239 -12 - 8 21 59 - 8 7 23 - 8 27 40 - 8 1 42 -0.23 - 82 0 0 - 7 49 58 0 15 31.5 33 239 -13 - 7 57 17 - 7 42 39 - 8 2 59 - 7 36 57 -0.23 - 81 0 0 - 7 24 46 0 15 33.5 32 239 -14 - 7 32 6 - 7 17 25 - 7 37 49 - 7 11 42 -0.23 - 80 0 0 - 6 59 4 0 15 35.5 31 239 -15 - 7 6 25 - 6 51 42 - 7 12 9 - 6 45 58 -0.22 - 79 0 0 - 6 32 53 0 15 37.3 30 239 -16 - 6 40 15 - 6 25 30 - 6 46 0 - 6 19 45 -0.22 - 78 0 0 - 6 6 13 0 15 39.2 29 239 -18 - 6 13 37 - 5 58 49 - 6 19 23 - 5 53 3 -0.22 - 77 0 0 - 5 39 5 0 15 40.9 28 239 -19 - 5 46 30 - 5 31 40 - 5 52 17 - 5 25 53 -0.22 - 76 0 0 - 5 11 30 0 15 42.7 27 239 -20 - 5 18 56 - 5 4 3 - 5 24 44 - 4 58 15 -0.22 - 75 0 0 - 4 43 27 0 15 44.3 26 239 -21 - 4 50 54 - 4 35 59 - 4 56 43 - 4 30 10 -0.22 - 74 0 0 - 4 14 57 0 15 45.9 25 239 -22 - 4 22 26 - 4 7 28 - 4 28 15 - 4 1 38 -0.22 - 73 0 0 - 3 46 1 0 15 47.5 24 239 -23 - 3 53 31 - 3 38 31 - 3 59 22 - 3 32 40 -0.22 - 72 0 0 - 3 16 40 0 15 48.9 23 239 -24 - 3 24 11 - 3 9 8 - 3 30 2 - 3 3 16 -0.22 - 71 0 0 - 2 46 53 0 15 50.4 21 239 -25 - 2 54 25 - 2 39 20 - 3 0 17 - 2 33 27 -0.22 - 70 0 0 - 2 16 41 0 15 51.7 20 239 -26 - 2 24 15 - 2 9 8 - 2 30 8 - 2 3 14 -0.22 - 69 0 0 - 1 46 6 0 15 53.0 19 239 -28 - 1 53 41 - 1 38 31 - 1 59 35 - 1 32 36 -0.22 - 68 0 0 - 1 15 8 0 15 54.2 18 239 -29 - 1 22 43 - 1 7 32 - 1 28 38 - 1 1 36 -0.22 - 67 0 0 - 0 43 47 0 15 55.4 17 239 -30 - 0 51 23 - 0 36 10 - 0 57 19 - 0 30 13 -0.22 - 66 0 0 - 0 12 4 0 15 56.4 16 239 -31 - 0 19 42 - 0 4 26 - 0 25 39 0 1 32 -0.22 - 65 0 0 0 20 0 0 15 57.4 15 239 -32 0 12 21 0 27 39 0 6 23 0 33 37 -0.22 - 64 0 0 0 52 23 0 15 58.4 14 239 -33 0 44 43 1 0 4 0 38 45 1 6 3 -0.22 - 63 0 0 1 25 6 0 15 59.2 12 239 -34 1 17 25 1 32 48 1 11 26 1 38 48 -0.22 - 62 0 0 1 58 8 0 16 0.0 11 239 -35 1 50 26 2 5 50 1 44 26 2 11 51 -0.22 - 61 0 0 2 31 27 0 16 0.8 10 239 -36 2 23 44 2 39 11 2 17 43 2 45 12 -0.22 - 60 0 0 3 5 3 0 16 1.4 9 239 -38 2 57 19 3 12 47 2 51 18 3 18 49 -0.22 - 59 0 0 3 38 55 0 16 2.0 8 239 -39 3 31 10 3 46 40 3 25 8 3 52 43 -0.22 - 58 0 0 4 13 1 0 16 2.4 7 239 -40 4 5 15 4 20 47 3 59 13 4 26 51 -0.22 - 57 0 0 4 47 21 0 16 2.9 6 239 -41 4 39 35 4 55 8 4 33 31 5 1 12 -0.22 - 56 0 0 5 21 54 0 16 3.2 4 239 -42 5 14 7 5 29 42 5 8 3 5 35 47 -0.21 - 55 0 0 5 56 39 0 16 3.4 3 239 -43 5 48 51 6 4 27 5 42 46 6 10 33 -0.21 - 54 0 0 6 31 35 0 16 3.6 2 239 -44 6 23 46 6 39 24 6 17 41 6 45 29 -0.20 - 53 0 0 7 6 40 0 16 3.7 1 239 -45 6 58 50 7 14 29 6 52 44 7 20 36 -0.18 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: UCAC4 300-142196 * constellation : Scorpius * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 17 50 28.7262 DE: -30 11 51.115 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 17 50 28.7262 DE: -30 11 51.114 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 10.8 * B mag [mag]: 12.0 * Diameter [mas]: 0.20 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (18399) Tentoumushi asteroid class: approx. diameter [km]: 24 approx. diameter ["]: 0.008 distance from Earth [AU]: 3.98970 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 25 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", 0.001", 109.155° remarks: * orbital elements for (18399)Tentoumushi : Mean anomaly = 256.6171801276 deg Arg. of pericenter = 330.3244720711 deg Long. of node = 75.6773208515 deg Inclination = 18.3007283774 deg Eccentricity = 0.2029569008 Semimajor axis = 3.1544703106 AU Perihelion dist = 2.5142487925 AU Mag: H = 12.44, G = 0.15 Epoch of elements : MJD 60616.00902671 TDT (2024 Nov 02.0090) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#462023Apr25,0.72,2024,11,2,0.216642,0.015615,0.223531,19.047831,-1.405754,0.004463,-0.000533,-0.000001,0.000000 -137.0057,-30.2058,172.64,-14.84,False UCAC4 300-142196,17.84131289,-30.1975319,11.96,10.75,10.10,0.2,0,,17.86751901,-30.2057715,8.10,8.30,0,0,0 18399,Tentoumushi,18.85,24.282,3.9897,0,0,3.239,-3.09,,2.0,0 0,256.4397,2024,11,1,330.3245,75.6773,18.3007,0.20296,3.15447,2.51425,12.43,5.0,0.15 1.390,0.0123,0.0007,109,0.0033,Known errors,0.78,0,-1,-1 20241102_142196,60140.67 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 16:11 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org