IOTA/IOTA-ES occultation update for (2398) Jilin / TYC 11-00749-1 event on 2024 Dec 11, 04:20 UT Visible from Summary ------- On 2024 Dec 11 UT, the 11.4944278136153 km diameter asteroid (2398) Jilin will occult a 9.6 mag star in the constellation Cetus for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 7.56 mag to 17.12 mag (the magnitude of the asteroid) for at most 1.530 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: 83 * date and approx. time of event: 2024 Dec 11, 04:11 - 2024 Dec 11, 04:29 * geocentric midpoint of event [JD]: 2460655.68083571 * magnitude of target star: 9.56 * magnitude drop [mag]: 7.56 * estimated maximum duration [s]: 1.530 * Moon: 77 % sunlit, 14° distance * Sun: 110° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 20 * 1 sigma uncertainty interval [path widths]: +/- 0.63 * 1 sigma uncertainty interval [seconds]: +/- 2.9 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.019, +/- 0.009) * 1 sigma uncertainty ellipse (major, minor, PA): (0.021", 0.004", 67°) * approx speed of asteroid's shadow [km/s]: 7.6026 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 11-00749-1 by 2398 Jilin on 2024 Dec 11 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 - 68 19 34 -86 0 0 4 12 15.2 1 296 19 - 65 26 2 - 70 56 15 - 61 9 0 - 73 57 23 .... - 85 3 1 -85 0 0 4 12 16.9 3 312 18 - 83 37 59 - 86 25 46 - 81 46 27 - 88 7 46 -1.05 - 93 19 7 -84 0 0 4 12 19.0 4 320 18 - 92 17 52 - 94 19 27 - 90 58 47 - 95 34 47 -1.20 - 98 26 32 -83 0 0 4 12 21.5 6 325 17 - 97 37 36 - 99 14 59 - 96 34 49 -100 15 46 -1.25 -101 54 27 -82 0 0 4 12 24.4 7 329 16 -101 13 20 -102 35 16 -100 20 44 -103 26 38 -1.27 -104 21 50 -81 0 0 4 12 27.7 8 331 16 -103 46 12 -104 57 16 -103 0 41 -105 41 55 -1.29 -106 9 9 -80 0 0 4 12 31.4 9 333 15 -105 37 37 -106 40 33 -104 57 23 -107 20 9 -1.29 -107 28 24 -79 0 0 4 12 35.5 10 334 15 -107 0 3 -107 56 39 -106 23 55 -108 32 18 -1.30 -108 27 9 -78 0 0 4 12 40.0 11 335 14 -108 1 21 -108 52 51 -107 28 31 -109 25 19 -1.31 -109 10 24 -77 0 0 4 12 44.9 12 336 13 -108 46 43 -109 34 0 -108 16 34 -110 3 50 -1.31 -109 41 38 -76 0 0 4 12 50.3 13 336 13 -109 19 43 -110 3 30 -108 51 50 -110 31 8 -1.31 -110 3 21 -75 0 0 4 12 56.0 14 336 12 -109 42 56 -110 23 43 -109 16 58 -110 49 28 -1.32 -110 17 23 -74 0 0 4 13 2.0 15 337 11 -109 58 15 -110 36 28 -109 33 56 -111 0 36 -1.32 -110 25 6 -73 0 0 4 13 8.5 15 337 11 -110 7 5 -110 43 3 -109 44 12 -111 5 47 -1.32 -110 27 33 -72 0 0 4 13 15.4 16 336 10 -110 10 32 -110 44 32 -109 48 54 -111 6 2 -1.32 -110 25 35 -71 0 0 4 13 22.6 17 336 9 -110 9 26 -110 41 42 -109 48 54 -111 2 6 1.32 -110 19 50 -70 0 0 4 13 30.3 18 336 8 -110 4 27 -110 35 10 -109 44 54 -110 54 36 1.32 -110 10 49 -69 0 0 4 13 38.3 19 336 7 -109 56 7 -110 25 28 -109 37 28 -110 44 1 1.32 -109 58 57 -68 0 0 4 13 46.7 20 335 7 -109 44 53 -110 12 59 -109 27 1 -110 30 45 1.32 -109 44 35 -67 0 0 4 13 55.4 21 335 6 -109 31 5 -109 58 4 -109 13 55 -110 15 7 1.33 -109 28 0 -66 0 0 4 14 4.6 22 334 5 -109 15 0 -109 40 58 -108 58 29 -109 57 23 1.33 -109 9 25 -65 0 0 4 14 14.1 23 334 4 -108 56 53 -109 21 56 -108 40 57 -109 37 46 1.33 -108 49 2 -64 0 0 4 14 23.9 23 333 3 -108 36 55 -109 1 8 -108 21 32 -109 16 26 1.33 -108 27 1 -63 0 0 4 14 34.2 24 333 2 -108 15 17 -108 38 43 -108 0 23 -108 53 33 1.33 -108 3 29 -62 0 0 4 14 44.8 25 332 1 -107 52 7 -108 14 51 -107 37 39 -108 29 13 1.33 -107 38 34 -61 0 0 4 14 55.7 26 331 1 -107 27 31 -107 49 36 -107 13 28 -108 3 34 1.33 -107 12 20 -60 0 0 4 15 7.0 26 330 0 -107 1 35 -107 23 4 -106 47 55 -107 36 40 1.33 -106 44 53 -59 0 0 4 15 18.7 27 330 -1 -106 34 24 -106 55 21 -106 21 5 -107 8 36 1.33 -106 16 16 -58 0 0 4 15 30.7 28 329 -2 -106 6 2 -106 26 29 -105 53 2 -106 39 25 1.33 -105 46 32 -57 0 0 4 15 43.0 29 328 -3 -105 36 32 -105 56 31 -105 23 49 -106 9 10 1.34 -105 15 44 -56 0 0 4 15 55.7 29 327 -4 -105 5 57 -105 25 30 -104 53 30 -105 37 53 1.34 -104 43 54 -55 0 0 4 16 8.7 30 326 -5 -104 34 18 -104 53 28 -104 22 7 -105 5 36 1.34 -104 11 3 -54 0 0 4 16 22.0 31 325 -6 -104 1 38 -104 20 27 -103 49 40 -104 32 21 1.34 -103 37 12 -53 0 0 4 16 35.7 31 324 -7 -103 27 57 -103 46 26 -103 16 12 -103 58 8 1.34 -103 2 22 -52 0 0 4 16 49.7 32 323 -8 -102 53 17 -103 11 27 -102 41 43 -103 22 57 1.34 -102 26 34 -51 0 0 4 17 4.0 32 322 -9 -102 17 36 -102 35 31 -102 6 13 -102 46 50 1.35 -101 49 47 -50 0 0 4 17 18.6 33 321 -10 -101 40 57 -101 58 36 -101 29 43 -102 9 46 1.35 -101 12 1 -49 0 0 4 17 33.6 33 319 -12 -101 3 18 -101 20 43 -100 52 12 -101 31 45 1.35 -100 33 15 -48 0 0 4 17 48.8 34 318 -13 -100 24 38 -100 41 51 -100 13 40 -100 52 45 1.35 - 99 53 28 -47 0 0 4 18 4.3 34 317 -14 - 99 44 57 -100 1 59 - 99 34 6 -100 12 46 1.35 - 99 12 40 -46 0 0 4 18 20.1 35 316 -15 - 99 4 13 - 99 21 6 - 98 53 28 - 99 31 46 1.36 - 98 30 47 -45 0 0 4 18 36.3 35 314 -16 - 98 22 24 - 98 39 9 - 98 11 45 - 98 49 44 1.36 - 97 47 49 -44 0 0 4 18 52.7 35 313 -17 - 97 39 30 - 97 56 7 - 97 28 55 - 98 6 38 1.36 - 97 3 43 -43 0 0 4 19 9.3 35 312 -18 - 96 55 27 - 97 11 58 - 96 44 56 - 97 22 25 1.37 - 96 18 26 -42 0 0 4 19 26.3 36 310 -20 - 96 10 13 - 96 26 39 - 95 59 45 - 96 37 3 1.37 - 95 31 56 -41 0 0 4 19 43.5 36 309 -21 - 95 23 44 - 95 40 7 - 95 13 19 - 95 50 29 1.37 - 94 44 9 -40 0 0 4 20 1.0 36 308 -22 - 94 35 58 - 94 52 19 - 94 25 34 - 95 2 39 1.37 - 93 55 1 -39 0 0 4 20 18.8 36 306 -23 - 93 46 51 - 94 3 11 - 93 36 27 - 94 13 30 1.38 - 93 4 28 -38 0 0 4 20 36.8 36 305 -24 - 92 56 17 - 93 12 38 - 92 45 53 - 93 22 57 1.38 - 92 12 24 -37 0 0 4 20 55.0 36 303 -26 - 92 4 13 - 92 20 35 - 91 53 48 - 92 30 55 1.38 - 91 18 45 -36 0 0 4 21 13.5 36 302 -27 - 91 10 32 - 91 26 57 - 91 0 4 - 91 37 19 1.39 - 90 23 23 -35 0 0 4 21 32.2 36 300 -28 - 90 15 8 - 90 31 38 - 90 4 37 - 90 42 3 1.39 - 89 26 12 -34 0 0 4 21 51.2 35 299 -29 - 89 17 53 - 89 34 30 - 89 7 19 - 89 44 59 1.40 - 88 27 4 -33 0 0 4 22 10.4 35 297 -31 - 88 18 40 - 88 35 25 - 88 8 0 - 88 46 0 1.40 - 87 25 48 -32 0 0 4 22 29.8 35 296 -32 - 87 17 20 - 87 34 15 - 87 6 33 - 87 44 56 1.40 - 86 22 14 -31 0 0 4 22 49.4 34 294 -33 - 86 13 40 - 86 30 48 - 86 2 45 - 86 41 36 1.41 - 85 16 11 -30 0 0 4 23 9.3 34 293 -34 - 85 7 28 - 85 24 51 - 84 56 23 - 85 35 49 1.41 - 84 7 22 -29 0 0 4 23 29.3 33 291 -36 - 83 58 30 - 84 16 12 - 83 47 14 - 84 27 21 1.42 - 82 55 31 -28 0 0 4 23 49.5 32 290 -37 - 82 46 29 - 83 4 31 - 82 34 58 - 83 15 54 1.42 - 81 40 18 -27 0 0 4 24 10.0 31 288 -38 - 81 31 3 - 81 49 31 - 81 19 15 - 82 1 9 1.42 - 80 21 17 -26 0 0 4 24 30.6 31 287 -40 - 80 11 47 - 80 30 45 - 79 59 40 - 80 42 42 1.43 - 78 57 59 -25 0 0 4 24 51.4 30 286 -41 - 78 48 10 - 79 7 45 - 78 35 40 - 79 20 4 1.43 - 77 29 46 -24 0 0 4 25 12.4 28 284 -42 - 77 19 35 - 77 39 53 - 77 6 36 - 77 52 39 1.44 - 75 55 50 -23 0 0 4 25 33.5 27 283 -43 - 75 45 12 - 76 6 23 - 75 31 39 - 76 19 42 1.44 - 74 15 8 -22 0 0 4 25 54.8 26 282 -45 - 74 3 58 - 74 26 14 - 73 49 41 - 74 40 13 1.45 - 72 26 16 -21 0 0 4 26 16.3 24 280 -46 - 72 14 24 - 72 38 3 - 71 59 13 - 72 52 52 1.46 - 70 27 15 -20 0 0 4 26 38.0 23 279 -47 - 70 14 29 - 70 39 54 - 69 58 7 - 70 55 48 1.47 - 68 15 8 -19 0 0 4 26 59.8 21 278 -48 - 68 1 8 - 68 29 0 - 67 43 9 - 68 46 22 1.48 Latitude Latitude Latitude Latitude - 68 0 0 -18 53 34 4 27 2.1 20 278 -48 -18 59 31 -18 47 37 -19 7 6 -18 40 6 1.42 - 67 0 0 -18 28 54 4 27 11.1 19 277 -49 -18 34 48 -18 23 0 -18 42 19 -18 15 34 1.45 - 66 0 0 -18 5 35 4 27 19.7 18 276 -49 -18 11 26 -17 59 45 -18 18 53 -17 52 22 1.45 - 65 0 0 -17 43 38 4 27 27.8 18 276 -49 -17 49 26 -17 37 51 -17 56 48 -17 30 31 1.45 - 64 0 0 -17 22 59 4 27 35.4 17 276 -49 -17 28 44 -17 17 15 -17 36 4 -17 9 59 1.45 - 63 0 0 -17 3 38 4 27 42.5 16 275 -50 -17 9 21 -16 57 56 -17 16 37 -16 50 44 1.45 - 62 0 0 -16 45 34 4 27 49.2 15 275 -50 -16 51 14 -16 39 54 -16 58 27 -16 32 45 1.45 - 61 0 0 -16 28 45 4 27 55.5 14 274 -50 -16 34 23 -16 23 8 -16 41 33 -16 16 1 1.46 - 60 0 0 -16 13 11 4 28 1.3 13 274 -50 -16 18 47 -16 7 36 -16 25 55 -16 0 32 1.46 - 59 0 0 -15 58 52 4 28 6.6 12 274 -50 -16 4 26 -15 53 19 -16 11 31 -15 46 17 1.46 - 58 0 0 -15 45 45 4 28 11.6 11 273 -50 -15 51 18 -15 40 14 -15 58 20 -15 33 14 1.47 - 57 0 0 -15 33 51 4 28 16.0 10 273 -50 -15 39 22 -15 28 21 -15 46 22 -15 21 24 1.47 - 56 0 0 -15 23 8 4 28 20.1 9 273 -50 -15 28 38 -15 17 40 -15 35 36 -15 10 44 1.48 - 55 0 0 -15 13 36 4 28 23.7 8 272 -50 -15 19 4 -15 8 9 -15 26 1 -15 1 15 1.48 - 54 0 0 -15 5 14 4 28 26.9 7 272 -49 -15 10 41 -14 59 48 -15 17 36 -14 52 56 1.49 - 53 0 0 -14 58 2 4 28 29.6 6 272 -49 -15 3 27 -14 52 37 -15 10 21 -14 45 46 1.51 - 52 0 0 -14 51 58 4 28 32.0 5 272 -49 -14 57 23 -14 46 34 -15 4 15 -14 39 44 1.53 - 51 0 0 -14 47 3 4 28 33.9 4 271 -48 -14 52 26 -14 41 40 -14 59 18 -14 34 51 1.56 - 50 0 0 -14 43 15 4 28 35.4 3 271 -48 -14 48 38 -14 37 53 -14 55 29 -14 31 5 1.61 - 49 0 0 -14 40 35 4 28 36.5 2 271 -48 -14 45 57 -14 35 13 -14 52 47 -14 28 26 1.71 - 48 0 0 -14 39 1 4 28 37.1 1 271 -47 -14 44 24 -14 33 40 -14 51 13 -14 26 53 1.99 - 47 0 0 -14 38 35 4 28 37.4 0 270 -47 -14 43 56 -14 33 14 -14 50 45 -14 26 27 6.13 Uncertainty in time = +/- 3 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: TYC 11-00749-1 * constellation : Cetus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 00 41 42.9621 DE: +00 06 43.233 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 00 41 42.9618 DE: +00 06 43.232 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 9.6 * B mag [mag]: 10.1 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (2398) Jilin asteroid class: approx. diameter [km]: 11 approx. diameter ["]: 0.011 distance from Earth [AU]: 1.48320 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#47 date of fit: 2023 Feb 09 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): 0.021", 0.004", 66.801° remarks: * orbital elements for (2398)Jilin : Mean anomaly = 318.4185806455 deg Arg. of pericenter = 12.4421843249 deg Long. of node = 88.0241750070 deg Inclination = 3.7291844010 deg Eccentricity = 0.2367148928 Semimajor axis = 2.3912948136 AU Perihelion dist = 1.8252397181 AU Mag: H = 13.50, G = 0.15 Epoch of elements : MJD 60655.18083692 TDT (2024 Dec 11.1808) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#472023Feb09,1.53,2024,12,11,4.340057,0.513392,-0.624369,3.315713,2.723890,0.004703,0.002145,0.000000,0.000000 -134.7294,0.2492,113.23,-23.03,False TYC 11-00749-1,0.69526726,0.1120093,10.11,9.56,9.26,0.1,0,,0.71668336,0.2492096,7.56,7.41,0,0,0 2398,Jilin,17.12,11.602,1.4832,0,0,1.312,16.16,,0.6,0 0,318.3704,2024,12,11,12.4422,88.0242,3.7292,0.23671,2.39129,1.82524,13.50,5.0,0.15 1.634,0.0210,0.0037,67,0.0068,Known errors,1.06,0,-1,-1 20241211_0749-1,60140.74 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 17:39 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org