IOTA/IOTA-ES occultation update for (4902) Thessandrus / UCAC4 507-007698 event on 2022 Nov 03, 01:32 UT Visible from Africa, South America Summary ------- On 2022 Nov 03 UT, the 54.5 km diameter asteroid (4902) Thessandrus will occult a 12.1 mag star in the constellation Taurus for observers along a path across Africa, South America. In the case of an occultation, the combined light of the asteroid and the star will drop by 4.84 mag to 16.96 mag (the magnitude of the asteroid) for at most 4.120 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: 56 * date and approx. time of event: 2022 Nov 03, 01:24 - 2022 Nov 03, 01:40 * geocentric midpoint of event [JD]: 2459886.56401646 * magnitude of target star: 12.13 * magnitude drop [mag]: 4.84 * estimated maximum duration [s]: 4.120 * Moon: 69 % sunlit, 96° distance * Sun: 149° distance * rough path description: Africa, South America The occultation path -------------------- * approximate projected width [km]: 56 * 1 sigma uncertainty interval [path widths]: +/- 1.11 * 1 sigma uncertainty interval [seconds]: +/- 6.3 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.028, +/- 0.020) * 1 sigma uncertainty ellipse (major, minor, PA): (0.028", 0.020", 84°) * approx speed of asteroid's shadow [km/s]: 13.2235 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC4 507-007698 by 4902 Thessandrus on 2022 Nov 3 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 - 79 0 0 -33 52 42 1 39 59.1 1 76 -22 -33 37 2 -34 8 23 -33 2 15 -34 43 20 .... - 78 0 0 -33 39 56 1 39 58.9 2 75 -23 -33 24 15 -33 55 39 -32 49 25 -34 30 39 0.13 - 77 0 0 -33 26 50 1 39 58.7 2 75 -24 -33 11 7 -33 42 33 -32 36 13 -34 17 37 0.17 - 76 0 0 -33 13 22 1 39 58.3 3 74 -24 -32 57 38 -33 29 8 -32 22 41 -34 4 15 0.19 - 75 0 0 -32 59 34 1 39 57.8 4 74 -25 -32 43 48 -33 15 21 -32 8 48 -33 50 32 0.20 - 74 0 0 -32 45 25 1 39 57.2 5 73 -26 -32 29 38 -33 1 14 -31 54 34 -33 36 28 0.21 - 73 0 0 -32 30 56 1 39 56.5 6 72 -27 -32 15 7 -32 46 46 -31 40 0 -33 22 4 0.21 - 72 0 0 -32 16 6 1 39 55.6 7 72 -27 -32 0 16 -32 31 58 -31 25 5 -33 7 19 0.22 - 71 0 0 -32 0 56 1 39 54.7 8 71 -28 -31 45 4 -32 16 49 -31 9 50 -32 52 14 0.22 - 70 0 0 -31 45 26 1 39 53.6 9 71 -29 -31 29 32 -32 1 21 -30 54 14 -32 36 49 0.22 - 69 0 0 -31 29 35 1 39 52.4 9 70 -30 -31 13 40 -31 45 31 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5 0 0 - 2 46 54 1 32 46.5 76 357 -53 - 2 30 38 - 3 3 11 - 1 54 31 - 3 39 30 0.24 6 0 0 - 2 24 2 1 32 37.8 76 353 -53 - 2 7 48 - 2 40 18 - 1 31 43 - 3 16 34 0.24 7 0 0 - 2 1 25 1 32 29.1 76 348 -52 - 1 45 11 - 2 17 39 - 1 9 10 - 2 53 52 0.24 8 0 0 - 1 39 2 1 32 20.4 76 344 -51 - 1 22 50 - 1 55 15 - 0 46 52 - 2 31 25 0.24 9 0 0 - 1 16 54 1 32 11.8 76 340 -51 - 1 0 44 - 1 33 6 - 0 24 49 - 2 9 12 0.24 10 0 0 - 0 55 2 1 32 3.1 76 336 -50 - 0 38 53 - 1 11 13 - 0 3 1 - 1 47 16 0.24 11 0 0 - 0 33 26 1 31 54.5 76 331 -49 - 0 17 18 - 0 49 35 0 18 30 - 1 25 35 0.24 12 0 0 - 0 12 6 1 31 45.8 76 327 -49 0 4 0 - 0 28 14 0 39 45 - 1 4 10 0.24 13 0 0 0 8 57 1 31 37.2 76 323 -48 0 25 2 - 0 7 9 1 0 44 - 0 43 3 0.24 14 0 0 0 29 43 1 31 28.6 76 319 -47 0 45 46 0 13 38 1 21 25 - 0 22 12 0.24 15 0 0 0 50 11 1 31 20.1 75 316 -46 1 6 13 0 34 8 1 41 49 - 0 1 38 0.24 16 0 0 1 10 22 1 31 11.5 75 313 -45 1 26 23 0 54 21 2 1 56 0 18 37 0.24 17 0 0 1 30 15 1 31 3.0 74 309 -45 1 46 14 1 14 15 2 21 44 0 38 35 0.24 18 0 0 1 49 50 1 30 54.6 74 306 -44 2 5 47 1 33 51 2 41 13 0 58 14 0.24 19 0 0 2 9 6 1 30 46.1 73 304 -43 2 25 2 1 53 8 3 0 25 1 17 35 0.24 20 0 0 2 28 2 1 30 37.8 72 301 -42 2 43 57 2 12 7 3 19 17 1 36 37 0.24 21 0 0 2 46 40 1 30 29.4 72 299 -41 3 2 33 2 30 46 3 37 50 1 55 19 0.24 22 0 0 3 4 58 1 30 21.1 71 297 -41 3 20 50 2 49 5 3 56 3 2 13 42 0.24 23 0 0 3 22 56 1 30 12.9 70 295 -40 3 38 46 3 7 5 4 13 56 2 31 45 0.24 24 0 0 3 40 34 1 30 4.7 69 293 -39 3 56 23 3 24 44 4 31 30 2 49 27 0.24 25 0 0 3 57 52 1 29 56.6 69 292 -38 4 13 40 3 42 4 4 48 43 3 6 50 0.24 26 0 0 4 14 50 1 29 48.5 68 290 -37 4 30 36 3 59 3 5 5 36 3 23 52 0.24 27 0 0 4 31 26 1 29 40.5 67 289 -36 4 47 11 4 15 41 5 22 8 3 40 33 0.24 28 0 0 4 47 42 1 29 32.5 66 288 -35 5 3 25 4 31 58 5 38 19 3 56 53 0.24 29 0 0 5 3 36 1 29 24.6 65 287 -35 5 19 18 4 47 53 5 54 9 4 12 52 0.24 30 0 0 5 19 9 1 29 16.8 65 286 -34 5 34 50 5 3 28 6 9 38 4 28 30 0.24 31 0 0 5 34 21 1 29 9.1 64 285 -33 5 50 0 5 18 41 6 24 45 4 43 46 0.24 32 0 0 5 49 11 1 29 1.4 63 284 -32 6 4 48 5 33 32 6 39 31 4 58 40 0.24 33 0 0 6 3 39 1 28 53.8 62 283 -31 6 19 15 5 48 1 6 53 54 5 13 12 0.24 34 0 0 6 17 44 1 28 46.2 61 282 -30 6 33 19 6 2 8 7 7 56 5 27 22 0.24 35 0 0 6 31 28 1 28 38.8 60 282 -29 6 47 2 6 15 53 7 21 36 5 41 9 0.24 36 0 0 6 44 49 1 28 31.4 59 281 -28 7 0 22 6 29 15 7 34 53 5 54 34 0.24 37 0 0 6 57 47 1 28 24.1 58 281 -28 7 13 19 6 42 15 7 47 47 6 7 37 0.24 38 0 0 7 10 23 1 28 16.9 57 280 -27 7 25 54 6 54 52 8 0 19 6 20 17 0.24 39 0 0 7 22 36 1 28 9.7 57 280 -26 7 38 6 7 7 6 8 12 29 6 32 33 0.24 40 0 0 7 34 27 1 28 2.7 56 279 -25 7 49 55 7 18 58 8 24 15 6 44 27 0.24 41 0 0 7 45 54 1 27 55.7 55 279 -24 8 1 21 7 30 26 8 35 39 6 55 58 0.24 42 0 0 7 56 58 1 27 48.8 54 279 -23 8 12 23 7 41 31 8 46 39 7 7 5 0.24 43 0 0 8 7 38 1 27 42.0 53 278 -22 8 23 3 7 52 12 8 57 17 7 17 49 0.24 44 0 0 8 17 55 1 27 35.3 52 278 -21 8 33 19 8 2 30 9 7 31 7 28 10 0.24 45 0 0 8 27 49 1 27 28.7 51 278 -20 8 43 12 8 12 25 9 17 21 7 38 6 0.24 46 0 0 8 37 19 1 27 22.2 50 278 -20 8 52 41 8 21 56 9 26 48 7 47 40 0.24 47 0 0 8 46 26 1 27 15.8 49 277 -19 9 1 47 8 31 4 9 35 52 7 56 49 0.24 48 0 0 8 55 8 1 27 9.5 48 277 -18 9 10 28 8 39 47 9 44 32 8 5 34 0.24 49 0 0 9 3 27 1 27 3.2 47 277 -17 9 18 46 8 48 7 9 52 48 8 13 56 0.24 50 0 0 9 11 22 1 26 57.1 46 277 -16 9 26 40 8 56 2 10 0 40 8 21 53 0.24 51 0 0 9 18 53 1 26 51.1 45 277 -15 9 34 11 9 3 34 10 8 9 8 29 27 0.24 52 0 0 9 25 59 1 26 45.2 44 277 -14 9 41 17 9 10 41 10 15 13 8 36 36 0.24 53 0 0 9 32 42 1 26 39.4 43 277 -13 9 47 59 9 17 25 10 21 54 8 43 20 0.24 54 0 0 9 39 0 1 26 33.6 43 277 -12 9 54 16 9 23 44 10 28 10 8 49 41 0.24 55 0 0 9 44 54 1 26 28.0 42 277 -11 10 0 10 9 29 38 10 34 2 8 55 37 0.24 56 0 0 9 50 24 1 26 22.5 41 277 -10 10 5 39 9 35 9 10 39 30 9 1 8 0.24 57 0 0 9 55 29 1 26 17.1 40 277 -10 10 10 44 9 40 14 10 44 34 9 6 15 0.24 58 0 0 10 0 10 1 26 11.8 39 277 -9 10 15 24 9 44 56 10 49 13 9 10 57 0.24 59 0 0 10 4 27 1 26 6.7 38 277 -8 10 19 40 9 49 12 10 53 28 9 15 15 0.24 60 0 0 10 8 18 1 26 1.6 37 277 -7 10 23 31 9 53 4 10 57 18 9 19 8 0.24 61 0 0 10 11 45 1 25 56.6 36 277 -6 10 26 58 9 56 32 11 0 44 9 22 36 0.24 62 0 0 10 14 48 1 25 51.8 35 277 -5 10 30 0 9 59 34 11 3 46 9 25 39 0.24 63 0 0 10 17 25 1 25 47.1 34 277 -4 10 32 37 10 2 12 11 6 23 9 28 18 0.24 64 0 0 10 19 38 1 25 42.4 33 277 -3 10 34 50 10 4 25 11 8 35 9 30 31 0.24 65 0 0 10 21 26 1 25 37.9 32 277 -2 10 36 38 10 6 13 11 10 22 9 32 20 0.24 66 0 0 10 22 49 1 25 33.6 31 277 -1 10 38 1 10 7 37 11 11 45 9 33 43 0.24 67 0 0 10 23 47 1 25 29.3 30 277 0 10 38 59 10 8 35 11 12 43 9 34 41 0.24 68 0 0 10 24 21 1 25 25.1 29 277 1 10 39 32 10 9 8 11 13 16 9 35 15 0.24 69 0 0 10 24 29 1 25 21.1 28 278 2 10 39 40 10 9 16 11 13 24 9 35 23 0.24 70 0 0 10 24 12 1 25 17.2 27 278 2 10 39 23 10 8 59 11 13 8 9 35 6 0.24 71 0 0 10 23 30 1 25 13.4 26 278 3 10 38 42 10 8 17 11 12 26 9 34 23 0.25 72 0 0 10 22 23 1 25 9.8 25 278 4 10 37 35 10 7 10 11 11 20 9 33 16 0.25 73 0 0 10 20 51 1 25 6.2 24 278 5 10 36 3 10 5 38 11 9 48 9 31 43 0.25 74 0 0 10 18 53 1 25 2.8 23 278 6 10 34 6 10 3 40 11 7 52 9 29 45 0.25 75 0 0 10 16 31 1 24 59.6 22 278 7 10 31 43 10 1 17 11 5 30 9 27 21 0.25 76 0 0 10 13 43 1 24 56.4 21 278 8 10 28 56 9 58 29 11 2 43 9 24 32 0.25 77 0 0 10 10 30 1 24 53.4 21 279 9 10 25 43 9 55 15 10 59 31 9 21 18 0.25 78 0 0 10 6 51 1 24 50.5 20 279 10 10 22 5 9 51 36 10 55 54 9 17 38 0.25 79 0 0 10 2 47 1 24 47.7 19 279 11 10 18 2 9 47 32 10 51 52 9 13 32 0.25 80 0 0 9 58 18 1 24 45.1 18 279 12 10 13 33 9 43 2 10 47 25 9 9 1 0.25 81 0 0 9 53 24 1 24 42.6 17 279 13 10 8 39 9 38 7 10 42 32 9 4 5 0.25 82 0 0 9 48 4 1 24 40.2 16 279 14 10 3 20 9 32 47 10 37 14 8 58 43 0.25 83 0 0 9 42 18 1 24 38.0 15 279 15 9 57 35 9 27 1 10 31 31 8 52 55 0.25 84 0 0 9 36 8 1 24 35.9 14 280 16 9 51 25 9 20 49 10 25 23 8 46 42 0.25 85 0 0 9 29 32 1 24 34.0 13 280 17 9 44 50 9 14 12 10 18 49 8 40 3 0.25 86 0 0 9 22 30 1 24 32.2 12 280 18 9 37 49 9 7 10 10 11 50 8 32 59 0.25 87 0 0 9 15 3 1 24 30.5 11 280 19 9 30 23 8 59 42 10 4 26 8 25 29 0.25 88 0 0 9 7 10 1 24 29.0 10 280 20 9 22 31 8 51 48 9 56 36 8 17 34 0.25 89 0 0 8 58 52 1 24 27.6 9 280 21 9 14 14 8 43 29 9 48 21 8 9 13 0.25 90 0 0 8 50 9 1 24 26.4 8 280 22 9 5 32 8 34 45 9 39 41 8 0 26 0.25 91 0 0 8 41 0 1 24 25.3 7 281 23 8 56 24 8 25 35 9 30 35 7 51 14 0.26 92 0 0 8 31 26 1 24 24.3 6 281 23 8 46 51 8 16 0 9 21 4 7 41 36 0.26 93 0 0 8 21 26 1 24 23.5 5 281 24 8 36 52 8 5 59 9 11 8 7 31 32 0.26 94 0 0 8 11 1 1 24 22.9 4 281 25 8 26 28 7 55 32 9 0 47 7 21 4 0.26 95 0 0 8 0 10 1 24 22.4 3 281 26 8 15 39 7 44 41 8 50 0 7 10 9 0.27 96 0 0 7 48 55 1 24 22.0 2 281 27 8 4 24 7 33 24 8 38 49 6 58 49 0.28 97 0 0 7 37 14 1 24 21.8 1 281 28 7 52 45 7 21 42 8 27 12 6 47 4 0.32 Uncertainty in time = +/- 6 secs Prediction of 2022 Oct 17.0 Data for the target star ------------------------ * name: UCAC4 507-007698 * constellation : Taurus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 04 37 14.4055 DE: +11 22 53.891 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 04 37 14.4057 DE: +11 22 53.891 * position source: Gaia EDR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 12.1 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (4902) Thessandrus asteroid class: approx. diameter [km]: 55 approx. diameter ["]: 0.018 distance from Earth [AU]: 4.10550 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#54 date of fit: 2022 Sep 21 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): 0.028", 0.020", 83.806° remarks: * orbital elements for (4902)Thessandrus : Mean anomaly = 343.6898731089 deg Arg. of pericenter = 271.4759293930 deg Long. of node = 170.2787543205 deg Inclination = 9.0754340909 deg Eccentricity = 0.0439974872 Semimajor axis = 5.2024697816 AU Perihelion dist = 4.9735741837 AU Mag: H = 9.93, G = 0.15 Epoch of elements : MJD 59886.06409722 TDT (2022 Nov 03.0641) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#542022Sep21,4.12,2022,11,3,1.536395,0.083699,-0.218647,-6.962848,-2.688072,-0.003024,0.000558,0.000001,0.000000 4.2841,11.4287,152.85,-15.01,False UCAC4 507-007698,4.62066825,11.3816363,0.00,12.13,0.00,0.0,0,,4.64186857,11.4287177,4.84,0.00,0,0,0 4902,Thessandrus,16.96,54.5,4.1055,0,0,-1.014,-5.76,,4.6,0 0,343.6015,2022,11,2,271.4759,170.2788,9.0754,0.04400,5.20247,4.97357,9.94,5.0,0.15 2.112,0.0283,0.0197,84,0.0204,Known errors,-1.00,-1,-1,-1 20221103_007698,59868.96 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2022 Oct 16, 23:09 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org