IOTA/IOTA-ES occultation update for (8316) Wolkenstein / TYC 251-01552-1 event on 2024 Oct 30, 19:05 UT Visible from Summary ------- On 2024 Oct 30 UT, the 15.9180739035504 km diameter asteroid (8316) Wolkenstein will occult a 9.2 mag star in the constellation Leo for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 9.08 mag to 18.24 mag (the magnitude of the asteroid) for at most 0.580 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: 99 * date and approx. time of event: 2024 Oct 30, 19:02 - 2024 Oct 30, 19:09 * geocentric midpoint of event [JD]: 2460614.29577417 * magnitude of target star: 9.16 * magnitude drop [mag]: 9.08 * estimated maximum duration [s]: 0.580 * Moon: 3 % sunlit, 44° distance * Sun: 63° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 16 * 1 sigma uncertainty interval [path widths]: +/- 0.32 * 1 sigma uncertainty interval [seconds]: +/- 1.0 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.009, +/- 0.006) * 1 sigma uncertainty ellipse (major, minor, PA): (0.011", 0.002", 122°) * approx speed of asteroid's shadow [km/s]: 27.7560 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 251-01552-1 by 8316 Wolkenstein on 2024 Oct 30 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 98 0 0 23 2 40 19 2 6.9 1 83 -62 22 58 14 23 7 6 22 55 21 23 9 59 .... 99 0 0 23 8 55 19 2 7.0 2 84 -61 23 4 29 23 13 21 23 1 36 23 16 13 0.05 100 0 0 23 14 40 19 2 7.2 3 84 -61 23 10 15 23 19 6 23 7 22 23 21 59 0.07 101 0 0 23 19 57 19 2 7.4 4 84 -60 23 15 32 23 24 23 23 12 39 23 27 15 0.08 102 0 0 23 24 45 19 2 7.6 4 85 -59 23 20 20 23 29 10 23 17 27 23 32 3 0.09 103 0 0 23 29 4 19 2 7.9 5 85 -58 23 24 39 23 33 29 23 21 46 23 36 21 0.09 104 0 0 23 32 54 19 2 8.3 6 86 -57 23 28 29 23 37 19 23 25 36 23 40 11 0.09 105 0 0 23 36 15 19 2 8.8 7 86 -56 23 31 50 23 40 40 23 28 58 23 43 32 0.10 106 0 0 23 39 7 19 2 9.3 8 86 -55 23 34 42 23 43 32 23 31 50 23 46 24 0.10 107 0 0 23 41 30 19 2 9.8 9 87 -54 23 37 6 23 45 55 23 34 14 23 48 47 0.10 108 0 0 23 43 24 19 2 10.4 10 87 -53 23 39 0 23 47 49 23 36 8 23 50 41 0.10 109 0 0 23 44 50 19 2 11.1 11 88 -52 23 40 25 23 49 14 23 37 33 23 52 6 0.10 110 0 0 23 45 46 19 2 11.8 12 88 -51 23 41 22 23 50 11 23 38 30 23 53 3 0.10 111 0 0 23 46 14 19 2 12.6 13 88 -50 23 41 49 23 50 38 23 38 58 23 53 30 0.10 112 0 0 23 46 12 19 2 13.5 14 89 -50 23 41 48 23 50 37 23 38 56 23 53 29 0.10 113 0 0 23 45 42 19 2 14.4 15 89 -49 23 41 18 23 50 6 23 38 26 23 52 58 0.10 114 0 0 23 44 43 19 2 15.3 16 90 -48 23 40 18 23 49 7 23 37 26 23 51 59 0.10 115 0 0 23 43 14 19 2 16.4 16 90 -47 23 38 50 23 47 39 23 35 58 23 50 31 0.10 116 0 0 23 41 17 19 2 17.4 17 90 -46 23 36 52 23 45 41 23 34 0 23 48 33 0.10 117 0 0 23 38 50 19 2 18.6 18 91 -45 23 34 25 23 43 15 23 31 33 23 46 7 0.10 118 0 0 23 35 54 19 2 19.8 19 91 -44 23 31 29 23 40 19 23 28 37 23 43 11 0.10 119 0 0 23 32 29 19 2 21.0 20 92 -43 23 28 4 23 36 54 23 25 12 23 39 46 0.11 120 0 0 23 28 35 19 2 22.3 21 92 -42 23 24 10 23 33 0 23 21 17 23 35 52 0.11 121 0 0 23 24 11 19 2 23.7 22 92 -41 23 19 46 23 28 37 23 16 54 23 31 29 0.11 122 0 0 23 19 19 19 2 25.1 23 93 -40 23 14 53 23 23 44 23 12 0 23 26 37 0.11 123 0 0 23 13 56 19 2 26.6 24 93 -39 23 9 31 23 18 22 23 6 38 23 21 15 0.11 124 0 0 23 8 5 19 2 28.2 25 93 -39 23 3 39 23 12 31 23 0 46 23 15 24 0.11 125 0 0 23 1 44 19 2 29.8 26 94 -38 22 57 18 23 6 10 22 54 24 23 9 3 0.11 126 0 0 22 54 53 19 2 31.4 27 94 -37 22 50 27 22 59 20 22 47 33 23 2 13 0.11 127 0 0 22 47 33 19 2 33.1 28 95 -36 22 43 6 22 52 0 22 40 13 22 54 54 0.11 128 0 0 22 39 43 19 2 34.9 28 95 -35 22 35 16 22 44 11 22 32 22 22 47 4 0.11 129 0 0 22 31 24 19 2 36.7 29 95 -34 22 26 56 22 35 51 22 24 2 22 38 45 0.11 130 0 0 22 22 35 19 2 38.6 30 96 -33 22 18 7 22 27 2 22 15 12 22 29 57 0.11 131 0 0 22 13 15 19 2 40.6 31 96 -32 22 8 47 22 17 44 22 5 53 22 20 38 0.11 132 0 0 22 3 26 19 2 42.6 32 96 -31 21 58 58 22 7 55 21 56 3 22 10 50 0.11 133 0 0 21 53 7 19 2 44.7 33 97 -30 21 48 38 21 57 37 21 45 43 22 0 32 0.11 134 0 0 21 42 19 19 2 46.8 34 97 -29 21 37 49 21 46 48 21 34 54 21 49 43 0.11 135 0 0 21 31 0 19 2 49.0 35 97 -28 21 26 29 21 35 30 21 23 34 21 38 25 0.11 136 0 0 21 19 10 19 2 51.3 36 98 -27 21 14 40 21 23 41 21 11 44 21 26 37 0.11 137 0 0 21 6 51 19 2 53.6 37 98 -26 21 2 20 21 11 22 20 59 24 21 14 18 0.11 138 0 0 20 54 2 19 2 56.0 38 98 -25 20 49 30 20 58 33 20 46 33 21 1 30 0.11 139 0 0 20 40 42 19 2 58.4 39 98 -24 20 36 10 20 45 14 20 33 13 20 48 11 0.11 140 0 0 20 26 52 19 3 0.9 40 99 -23 20 22 19 20 31 24 20 19 22 20 34 22 0.11 141 0 0 20 12 31 19 3 3.4 41 99 -22 20 7 58 20 17 5 20 5 0 20 20 2 0.11 142 0 0 19 57 40 19 3 6.1 42 99 -22 19 53 7 20 2 14 19 50 9 20 5 12 0.11 143 0 0 19 42 19 19 3 8.7 43 100 -21 19 37 45 19 46 54 19 34 46 19 49 52 0.11 144 0 0 19 26 28 19 3 11.5 44 100 -20 19 21 53 19 31 3 19 18 54 19 34 1 0.11 145 0 0 19 10 6 19 3 14.3 45 100 -19 19 5 30 19 14 41 19 2 31 19 17 40 0.11 146 0 0 18 53 13 19 3 17.1 46 100 -18 18 48 37 18 57 49 18 45 37 19 0 49 0.11 147 0 0 18 35 50 19 3 20.0 47 100 -17 18 31 13 18 40 27 18 28 13 18 43 27 0.11 148 0 0 18 17 57 19 3 23.0 48 101 -16 18 13 19 18 22 34 18 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21 49 - 0 35 17 - 0 18 31 0.11 -170 0 0 - 1 1 23 19 6 13.8 82 352 30 - 1 6 29 - 0 56 18 - 1 9 47 - 0 53 0 0.10 -169 0 0 - 1 36 1 19 6 18.5 82 345 31 - 1 41 7 - 1 30 56 - 1 44 25 - 1 27 37 0.10 -168 0 0 - 2 10 47 19 6 23.1 81 340 32 - 2 15 52 - 2 5 41 - 2 19 11 - 2 2 22 0.10 -167 0 0 - 2 45 38 19 6 27.8 80 336 33 - 2 50 44 - 2 40 32 - 2 54 3 - 2 37 14 0.10 -166 0 0 - 3 20 35 19 6 32.4 79 332 34 - 3 25 42 - 3 15 29 - 3 29 1 - 3 12 10 0.10 -165 0 0 - 3 55 36 19 6 37.1 78 329 36 - 4 0 43 - 3 50 30 - 4 4 2 - 3 47 11 0.10 -164 0 0 - 4 30 40 19 6 41.7 77 327 37 - 4 35 47 - 4 25 34 - 4 39 6 - 4 22 15 0.10 -163 0 0 - 5 5 46 19 6 46.3 76 324 38 - 5 10 53 - 5 0 40 - 5 14 12 - 4 57 21 0.10 -162 0 0 - 5 40 53 19 6 50.8 75 323 39 - 5 46 0 - 5 35 46 - 5 49 19 - 5 32 27 0.10 -161 0 0 - 6 15 59 19 6 55.4 74 321 40 - 6 21 6 - 6 10 53 - 6 24 26 - 6 7 33 0.10 -160 0 0 - 6 51 4 19 6 59.9 73 319 41 - 6 56 11 - 6 45 57 - 6 59 30 - 6 42 38 0.10 -159 0 0 - 7 26 6 19 7 4.3 71 318 42 - 7 31 13 - 7 21 0 - 7 34 32 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58 6 19 8 38.9 44 302 67 -21 3 3 -20 53 10 -21 6 15 -20 49 57 0.10 -133 0 0 -21 26 24 19 8 41.8 43 302 68 -21 31 19 -21 21 28 -21 34 31 -21 18 16 0.10 -132 0 0 -21 54 16 19 8 44.6 42 301 69 -21 59 11 -21 49 21 -22 2 23 -21 46 9 0.10 -131 0 0 -22 21 43 19 8 47.4 41 301 70 -22 26 37 -22 16 49 -22 29 49 -22 13 38 0.10 -130 0 0 -22 48 44 19 8 50.1 40 301 70 -22 53 38 -22 43 51 -22 56 49 -22 40 40 0.10 -129 0 0 -23 15 19 19 8 52.7 39 300 71 -23 20 12 -23 10 27 -23 23 23 -23 7 16 0.10 -128 0 0 -23 41 28 19 8 55.3 38 300 72 -23 46 20 -23 36 36 -23 49 30 -23 33 26 0.10 -127 0 0 -24 7 10 19 8 57.8 37 299 72 -24 12 2 -24 2 19 -24 15 11 -23 59 10 0.10 -126 0 0 -24 32 25 19 9 0.2 36 299 73 -24 37 16 -24 27 35 -24 40 25 -24 24 26 0.10 -125 0 0 -24 57 13 19 9 2.5 35 298 73 -25 2 3 -24 52 24 -25 5 12 -24 49 15 0.10 -124 0 0 -25 21 34 19 9 4.8 34 298 74 -25 26 23 -25 16 45 -25 29 31 -25 13 37 0.10 -123 0 0 -25 45 27 19 9 7.0 33 297 74 -25 50 15 -25 40 39 -25 53 23 -25 37 31 0.10 -122 0 0 -26 8 52 19 9 9.1 32 297 74 -26 13 40 -26 4 5 -26 16 47 -26 0 58 0.10 -121 0 0 -26 31 50 19 9 11.1 31 296 75 -26 36 36 -26 27 3 -26 39 43 -26 23 56 0.10 -120 0 0 -26 54 19 19 9 13.1 30 296 75 -26 59 5 -26 49 33 -27 2 11 -26 46 27 0.10 -119 0 0 -27 16 20 19 9 15.0 29 295 75 -27 21 6 -27 11 35 -27 24 11 -27 8 30 0.10 -118 0 0 -27 37 53 19 9 16.9 28 295 75 -27 42 38 -27 33 9 -27 45 43 -27 30 4 0.10 -117 0 0 -27 58 58 19 9 18.7 27 294 75 -28 3 42 -27 54 15 -28 6 47 -27 51 10 0.10 -116 0 0 -28 19 35 19 9 20.4 26 294 75 -28 24 18 -28 14 52 -28 27 22 -28 11 48 0.10 -115 0 0 -28 39 43 19 9 22.0 25 293 75 -28 44 25 -28 35 1 -28 47 29 -28 31 57 0.10 -114 0 0 -28 59 23 19 9 23.6 24 293 75 -29 4 5 -28 54 41 -29 7 8 -28 51 38 0.10 -113 0 0 -29 18 35 19 9 25.1 23 292 75 -29 23 15 -29 13 54 -29 26 18 -29 10 51 0.10 -112 0 0 -29 37 18 19 9 26.5 22 292 74 -29 41 58 -29 32 38 -29 45 0 -29 29 36 0.10 -111 0 0 -29 55 33 19 9 27.9 21 291 74 -30 0 12 -29 50 53 -30 3 14 -29 47 52 0.10 -110 0 0 -30 13 19 19 9 29.2 20 291 74 -30 17 58 -30 8 41 -30 20 59 -30 5 40 0.10 -109 0 0 -30 30 38 19 9 30.5 19 290 73 -30 35 16 -30 26 0 -30 38 17 -30 22 59 0.10 -108 0 0 -30 47 28 19 9 31.7 19 290 73 -30 52 6 -30 42 51 -30 55 6 -30 39 50 0.10 -107 0 0 -31 3 50 19 9 32.8 18 289 73 -31 8 27 -30 59 13 -31 11 27 -30 56 14 0.10 -106 0 0 -31 19 44 19 9 33.9 17 289 72 -31 24 20 -31 15 8 -31 27 20 -31 12 9 0.10 -105 0 0 -31 35 10 19 9 34.9 16 288 72 -31 39 46 -31 30 35 -31 42 45 -31 27 36 0.10 -104 0 0 -31 50 9 19 9 35.8 15 288 71 -31 54 43 -31 45 34 -31 57 42 -31 42 35 0.10 -103 0 0 -32 4 39 19 9 36.7 14 287 70 -32 9 13 -32 0 5 -32 12 11 -31 57 6 0.10 -102 0 0 -32 18 41 19 9 37.5 13 287 70 -32 23 15 -32 14 8 -32 26 13 -32 11 10 0.10 -101 0 0 -32 32 16 19 9 38.3 12 286 69 -32 36 50 -32 27 43 -32 39 47 -32 24 46 0.10 -100 0 0 -32 45 24 19 9 39.0 11 285 69 -32 49 56 -32 40 51 -32 52 54 -32 37 54 0.10 - 99 0 0 -32 58 4 19 9 39.7 11 285 68 -33 2 36 -32 53 32 -33 5 33 -32 50 35 0.10 - 98 0 0 -33 10 16 19 9 40.3 10 284 67 -33 14 48 -33 5 45 -33 17 44 -33 2 49 0.10 - 97 0 0 -33 22 2 19 9 40.9 9 284 67 -33 26 33 -33 17 31 -33 29 29 -33 14 35 0.10 - 96 0 0 -33 33 20 19 9 41.4 8 283 66 -33 37 51 -33 28 50 -33 40 46 -33 25 54 0.10 - 95 0 0 -33 44 11 19 9 41.8 7 283 65 -33 48 41 -33 39 41 -33 51 37 -33 36 46 0.10 - 94 0 0 -33 54 36 19 9 42.2 6 282 65 -33 59 5 -33 50 6 -34 2 0 -33 47 11 0.10 - 93 0 0 -34 4 33 19 9 42.6 5 282 64 -34 9 2 -34 0 4 -34 11 57 -33 57 9 0.10 - 92 0 0 -34 14 4 19 9 42.9 5 281 63 -34 18 32 -34 9 35 -34 21 27 -34 6 40 0.10 - 91 0 0 -34 23 8 19 9 43.1 4 280 63 -34 27 36 -34 18 39 -34 30 30 -34 15 45 0.10 - 90 0 0 -34 31 45 19 9 43.3 3 280 62 -34 36 13 -34 27 17 -34 39 7 -34 24 23 0.10 - 89 0 0 -34 39 56 19 9 43.4 2 279 61 -34 44 24 -34 35 29 -34 47 18 -34 32 35 0.10 - 88 0 0 -34 47 41 19 9 43.5 1 279 60 -34 52 8 -34 43 14 -34 55 2 -34 40 20 0.10 - 87 0 0 -34 54 59 19 9 43.6 0 278 60 -34 59 26 -34 50 33 -35 2 20 -34 47 39 0.09 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: TYC 251-01552-1 * constellation : Leo * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 10 18 49.7427 DE: +06 38 03.867 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 10 18 49.7431 DE: +06 38 03.865 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 9.2 * B mag [mag]: 9.4 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (8316) Wolkenstein asteroid class: approx. diameter [km]: 16 approx. diameter ["]: 0.006 distance from Earth [AU]: 3.63900 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#47 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): 0.011", 0.002", 121.939° remarks: * orbital elements for (8316)Wolkenstein : Mean anomaly = 145.6814187062 deg Arg. of pericenter = 51.6887328706 deg Long. of node = 294.3135640794 deg Inclination = 9.5461135513 deg Eccentricity = 0.1263027554 Semimajor axis = 2.9909631344 AU Perihelion dist = 2.6131962492 AU Mag: H = 11.98, G = 0.15 Epoch of elements : MJD 60613.79577417 TDT (2024 Oct 30.7958) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#472023Apr27,0.58,2024,10,30,19.098580,-0.052552,-0.091059,13.701021,-7.596920,-0.005038,0.001772,-0.000001,0.000000 -171.0367,6.5119,-110.57,-14.13,False TYC 251-01552-1,10.31381739,6.6344075,9.41,9.16,9.03,0.1,0,,10.33529606,6.5118527,9.08,8.77,0,0,0 8316,Wolkenstein,18.24,16.182,3.6390,0,0,2.222,-18.36,,1.2,0 0,145.5298,2024,10,30,51.6887,294.3136,9.5461,0.12630,2.99096,2.61320,11.98,5.0,0.15 1.325,0.0110,0.0019,122,0.0020,Known errors,1.10,0,-1,-1 20241030_1552-1,60140.67 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 16:04 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org