IOTA/IOTA-ES occultation update for (1013) Tombecka / TYC 2917-02403-1 event on 2024 Dec 20, 23:51 UT Visible from Summary ------- On 2024 Dec 20 UT, the 35.0774272906355 km diameter asteroid (1013) Tombecka will occult a 10.1 mag star in the constellation Auriga for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 2.99 mag to 13.06 mag (the magnitude of the asteroid) for at most 3.900 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 Dec 20, 23:45 - 2024 Dec 20, 23:57 * geocentric midpoint of event [JD]: 2460665.49433104 * magnitude of target star: 10.14 * magnitude drop [mag]: 2.99 * estimated maximum duration [s]: 3.900 * Moon: 67 % sunlit, 76° distance * Sun: 161° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 75 * 1 sigma uncertainty interval [path widths]: +/- 0.26 * 1 sigma uncertainty interval [seconds]: +/- 2.5 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.026, +/- 0.007) * 1 sigma uncertainty ellipse (major, minor, PA): (0.026", 0.004", 77°) * approx speed of asteroid's shadow [km/s]: 9.0126 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 2917-02403-1 by 1013 Tombecka on 2024 Dec 20 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 - 56 0 0 -37 25 49 23 57 19.5 0 34 -10 -36 48 36 .. .. .. -36 29 41 .. .. .. .... - 55 0 0 -36 16 39 23 57 19.1 2 33 -11 -35 41 21 -36 53 12 -35 23 22 -37 12 51 0.78 - 54 0 0 -35 11 47 23 57 17.8 3 33 -12 -34 38 6 -35 46 32 -34 20 54 -36 5 9 1.36 - 53 0 0 -34 10 43 23 57 15.8 4 32 -13 -33 38 27 -34 43 56 -33 21 56 -35 1 42 1.56 - 52 0 0 -33 13 6 23 57 13.0 5 32 -15 -32 42 4 -33 44 59 -32 26 9 -34 2 1 1.66 - 51 0 0 -32 18 39 23 57 9.7 7 31 -16 -31 48 41 -32 49 23 -31 33 18 -33 5 45 1.73 - 50 0 0 -31 27 7 23 57 5.8 8 30 -17 -30 58 6 -31 56 49 -30 43 12 -32 12 38 1.77 - 49 0 0 -30 38 18 23 57 1.4 9 30 -18 -30 10 8 -31 7 6 -29 55 39 -31 22 25 1.79 - 48 0 0 -29 52 2 23 56 56.4 10 29 -19 -29 24 37 -30 20 1 -29 10 31 -30 34 53 1.82 - 47 0 0 -29 8 9 23 56 51.1 11 29 -21 -28 41 26 -29 35 24 -28 27 40 -29 49 52 1.83 - 46 0 0 -28 26 32 23 56 45.3 12 28 -22 -28 0 27 -28 53 8 -27 46 59 -29 7 14 1.84 - 45 0 0 -27 47 5 23 56 39.1 13 28 -23 -27 21 33 -28 13 5 -27 8 23 -28 26 52 1.85 - 44 0 0 -27 9 42 23 56 32.6 14 27 -24 -26 44 41 -27 35 9 -26 31 46 -27 48 38 1.86 - 43 0 0 -26 34 17 23 56 25.7 15 27 -25 -26 9 44 -26 59 15 -25 57 4 -27 12 28 1.86 - 42 0 0 -26 0 46 23 56 18.5 16 26 -26 -25 36 39 -26 25 17 -25 24 12 -26 38 15 1.87 - 41 0 0 -25 29 6 23 56 11.0 17 25 -27 -25 5 22 -25 53 11 -24 53 7 -26 5 56 1.87 - 40 0 0 -24 59 11 23 56 3.2 17 25 -28 -24 35 49 -25 22 54 -24 23 45 -25 35 27 1.88 - 39 0 0 -24 31 0 23 55 55.1 18 24 -29 -24 7 58 -24 54 22 -23 56 3 -25 6 43 1.88 - 38 0 0 -24 4 28 23 55 46.8 19 24 -30 -23 41 44 -24 27 31 -23 29 59 -24 39 42 1.88 - 37 0 0 -23 39 34 23 55 38.3 20 23 -30 -23 17 7 -24 2 20 -23 5 30 -24 14 21 1.88 - 36 0 0 -23 16 15 23 55 29.5 20 22 -31 -22 54 4 -23 38 45 -22 42 34 -23 50 38 1.88 - 35 0 0 -22 54 29 23 55 20.6 21 22 -32 -22 32 31 -23 16 44 -22 21 9 -23 28 29 1.88 - 34 0 0 -22 34 13 23 55 11.4 22 21 -33 -22 12 29 -22 56 15 -22 1 13 -23 7 53 1.88 - 33 0 0 -22 15 27 23 55 2.1 22 20 -34 -21 53 54 -22 37 16 -21 42 45 -22 48 48 1.88 - 32 0 0 -21 58 8 23 54 52.6 23 20 -35 -21 36 46 -22 19 46 -21 25 42 -22 31 12 1.88 - 31 0 0 -21 42 15 23 54 42.9 23 19 -35 -21 21 2 -22 3 43 -21 10 3 -22 15 3 1.88 - 30 0 0 -21 27 46 23 54 33.1 24 18 -36 -21 6 43 -21 49 6 -20 55 48 -22 0 21 1.88 - 29 0 0 -21 14 41 23 54 23.1 24 18 -37 -20 53 45 -21 35 53 -20 42 55 -21 47 3 1.88 - 28 0 0 -21 2 59 23 54 13.0 25 17 -37 -20 42 10 -21 24 3 -20 31 23 -21 35 10 1.88 - 27 0 0 -20 52 38 23 54 2.8 25 16 -38 -20 31 55 -21 13 35 -20 21 10 -21 24 39 1.88 - 26 0 0 -20 43 37 23 53 52.5 26 16 -39 -20 22 59 -21 4 29 -20 12 18 -21 15 30 1.88 - 25 0 0 -20 35 56 23 53 42.0 26 15 -39 -20 15 23 -20 56 44 -20 4 44 -21 7 42 1.88 - 24 0 0 -20 29 35 23 53 31.5 26 14 -40 -20 9 5 -20 50 19 -19 58 28 -21 1 14 1.89 - 23 0 0 -20 24 32 23 53 20.9 27 13 -40 -20 4 6 -20 45 13 -19 53 30 -20 56 7 1.89 - 22 0 0 -20 20 48 23 53 10.1 27 12 -41 -20 0 24 -20 41 26 -19 49 49 -20 52 19 1.89 - 21 0 0 -20 18 21 23 52 59.4 27 12 -41 -19 57 59 -20 38 58 -19 47 25 -20 49 50 1.89 - 20 0 0 -20 17 13 23 52 48.5 27 11 -42 -19 56 51 -20 37 49 -19 46 18 -20 48 40 1.89 - 19 0 0 -20 17 22 23 52 37.6 28 10 -42 -19 57 0 -20 37 58 -19 46 27 -20 48 49 1.89 - 18 0 0 -20 18 49 23 52 26.6 28 9 -42 -19 58 26 -20 39 25 -19 47 53 -20 50 17 1.89 - 17 0 0 -20 21 33 23 52 15.6 28 9 -43 -20 1 9 -20 42 11 -19 50 35 -20 53 3 1.89 - 16 0 0 -20 25 35 23 52 4.5 28 8 -43 -20 5 9 -20 46 15 -19 54 34 -20 57 9 1.89 - 15 0 0 -20 30 55 23 51 53.4 28 7 -43 -20 10 27 -20 51 38 -19 59 50 -21 2 33 1.89 - 14 0 0 -20 37 34 23 51 42.3 28 6 -43 -20 17 2 -20 58 20 -20 6 23 -21 9 17 1.89 - 13 0 0 -20 45 31 23 51 31.2 28 5 -44 -20 24 55 -21 6 22 -20 14 14 -21 17 21 1.90 - 12 0 0 -20 54 48 23 51 20.0 28 5 -44 -20 34 6 -21 15 43 -20 23 23 -21 26 46 1.90 - 11 0 0 -21 5 24 23 51 8.9 28 4 -44 -20 44 37 -21 26 26 -20 33 51 -21 37 31 1.90 - 10 0 0 -21 17 21 23 50 57.8 27 3 -44 -20 56 27 -21 38 30 -20 45 38 -21 49 39 1.90 - 9 0 0 -21 30 39 23 50 46.6 27 2 -44 -21 9 38 -21 51 56 -20 58 45 -22 3 9 1.90 - 8 0 0 -21 45 20 23 50 35.5 27 1 -44 -21 24 10 -22 6 45 -21 13 13 -22 18 3 1.91 - 7 0 0 -22 1 24 23 50 24.5 27 0 -44 -21 40 5 -22 22 59 -21 29 3 -22 34 22 1.91 - 6 0 0 -22 18 52 23 50 13.4 27 360 -44 -21 57 23 -22 40 38 -21 46 16 -22 52 7 1.91 - 5 0 0 -22 37 47 23 50 2.4 26 359 -44 -22 16 6 -22 59 44 -22 4 53 -23 11 20 1.91 - 4 0 0 -22 58 8 23 49 51.5 26 358 -43 -22 36 16 -23 20 19 -22 24 56 -23 32 1 1.92 - 3 0 0 -23 19 59 23 49 40.6 25 357 -43 -22 57 53 -23 42 24 -22 46 26 -23 54 14 1.92 - 2 0 0 -23 43 21 23 49 29.9 25 357 -43 -23 20 59 -24 6 0 -23 9 25 -24 17 59 1.92 - 1 0 0 -24 8 15 23 49 19.2 25 356 -42 -23 45 37 -24 31 11 -23 33 55 -24 43 19 1.93 0 0 0 -24 34 44 23 49 8.6 24 355 -42 -24 11 49 -24 57 59 -23 59 58 -25 10 16 1.93 1 0 0 -25 2 51 23 48 58.1 23 354 -42 -24 39 36 -25 26 26 -24 27 36 -25 38 54 1.93 2 0 0 -25 32 37 23 48 47.7 23 353 -41 -25 9 2 -25 56 34 -24 56 51 -26 9 14 1.94 3 0 0 -26 4 7 23 48 37.5 22 353 -41 -25 40 10 -26 28 28 -25 27 47 -26 41 21 1.94 4 0 0 -26 37 24 23 48 27.4 22 352 -40 -26 13 1 -27 2 11 -26 0 26 -27 15 18 1.95 5 0 0 -27 12 31 23 48 17.5 21 351 -39 -26 47 41 -27 37 46 -26 34 52 -27 51 8 1.95 6 0 0 -27 49 32 23 48 7.8 20 351 -39 -27 24 12 -28 15 18 -27 11 8 -28 28 58 1.96 7 0 0 -28 28 32 23 47 58.3 19 350 -38 -28 2 40 -28 54 53 -27 49 20 -29 8 51 1.96 8 0 0 -29 9 37 23 47 49.0 19 349 -37 -28 43 9 -29 36 35 -28 29 31 -29 50 54 1.97 9 0 0 -29 52 52 23 47 39.9 18 348 -36 -29 25 45 -30 20 32 -29 11 47 -30 35 14 1.97 10 0 0 -30 38 25 23 47 31.1 17 348 -36 -30 10 34 -31 6 51 -29 56 15 -31 21 58 1.98 11 0 0 -31 26 23 23 47 22.7 16 347 -35 -30 57 44 -31 55 41 -30 43 0 -32 11 17 1.99 12 0 0 -32 16 55 23 47 14.5 15 346 -34 -31 47 22 -32 47 12 -31 32 12 -33 3 19 2.00 13 0 0 -33 10 14 23 47 6.7 14 346 -33 -32 39 40 -33 41 36 -32 23 59 -33 58 20 2.01 14 0 0 -34 6 31 23 46 59.3 13 345 -32 -33 34 48 -34 39 7 -33 18 34 -34 56 33 2.02 15 0 0 -35 6 2 23 46 52.3 11 344 -30 -34 33 1 -35 40 5 -34 16 8 -35 58 19 2.03 16 0 0 -36 9 8 23 46 45.8 10 344 -29 -35 34 36 -36 44 50 -35 16 58 -37 4 1 2.04 17 0 0 -37 16 11 23 46 39.9 9 343 -28 -36 39 53 -37 53 52 -36 21 24 -38 14 10 2.07 18 0 0 -38 27 45 23 46 34.5 8 342 -27 -37 49 20 -39 7 47 -37 29 51 -39 29 27 2.09 19 0 0 -39 44 29 23 46 29.9 6 342 -25 -39 3 31 -40 27 26 -38 42 49 -40 50 48 2.14 20 0 0 -41 7 21 23 46 26.2 5 341 -24 -40 23 13 -41 54 1 -40 1 2 -42 19 35 2.21 21 0 0 -42 37 45 23 46 23.4 3 340 -22 -41 49 32 -43 29 20 -41 25 27 -43 57 54 2.39 22 0 0 -44 17 49 23 46 21.8 1 340 -20 -43 24 3 -45 16 21 -42 57 30 .. .. .. 3.18 23 0 0 .. .. .... .. .. .. .. .. .. -45 9 25 .. .. .. -44 39 23 .. .. .. .... Uncertainty in time = +/- 3 secs Prediction of 2023 Jul 15.7 Data for the target star ------------------------ * name: TYC 2917-02403-1 * constellation : Auriga * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 05 23 01.8087 DE: +41 15 44.590 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 05 23 01.8087 DE: +41 15 44.590 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 10.1 * B mag [mag]: 10.7 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (1013) Tombecka asteroid class: approx. diameter [km]: 35 approx. diameter ["]: 0.038 distance from Earth [AU]: 1.26260 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#50 date of fit: 2023 Feb 11 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): 0.026", 0.004", 77.4° remarks: * orbital elements for (1013)Tombecka : Mean anomaly = 333.5075385319 deg Arg. of pericenter = 99.2041956944 deg Long. of node = 27.2157940267 deg Inclination = 11.8911833491 deg Eccentricity = 0.2085794752 Semimajor axis = 2.6851409537 AU Perihelion dist = 2.1250756627 AU Mag: H = 10.26, G = 0.15 Epoch of elements : MJD 60664.99433125 TDT (2024 Dec 20.9943) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#502023Feb11,3.90,2024,12,20,23.863945,-0.128803,-0.874299,-5.032607,0.741479,0.000728,-0.001705,0.000001,0.000000 -6.8058,41.2871,-178.44,-23.44,False TYC 2917-02403-1,5.38383574,41.2623860,10.71,10.14,9.83,0.1,0,,5.41367414,41.2871187,2.99,2.86,0,0,0 1013,Tombecka,13.06,35.169,1.2626,0,0,-3.109,5.16,,1.8,0 0,333.2848,2024,12,20,99.2042,27.2158,11.8912,0.20858,2.68514,2.12508,10.25,5.0,0.15 1.261,0.0263,0.0037,77,0.0100,Known errors,1.23,0,-1,-1 20241220_2403-1,60140.75 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 17:57 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org