IOTA/IOTA-ES occultation update for (769) Tatjana / HIP 46689 event on 2024 Jan 16, 01:05 UT Visible from Summary ------- On 2024 Jan 16 UT, the 107.036759542492 km diameter asteroid (769) Tatjana will occult a 6.6 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 8.02 mag to 14.61 mag (the magnitude of the asteroid) for at most 7.900 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: 100 * date and approx. time of event: 2024 Jan 16, 00:58 - 2024 Jan 16, 01:12 * geocentric midpoint of event [JD]: 2460325.54551755 * magnitude of target star: 6.59 * magnitude drop [mag]: 8.02 * estimated maximum duration [s]: 7.900 * Moon: 26 % sunlit, 140° distance * Sun: 156° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 120 * 1 sigma uncertainty interval [path widths]: +/- 0.10 * 1 sigma uncertainty interval [seconds]: +/- 2.9 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.019, +/- 0.008) * 1 sigma uncertainty ellipse (major, minor, PA): (0.020", 0.005", 110°) * approx speed of asteroid's shadow [km/s]: 14.0568 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of HIP 46689 by 769 Tatjana on 2024 Jan 16 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 - 81 0 0 3 29 40 1 12 33.2 1 65 -24 4 5 34 2 53 36 4 12 37 2 46 28 .... - 80 0 0 3 57 5 1 12 33.0 2 65 -25 4 32 49 3 21 10 4 39 51 3 14 4 0.20 - 79 0 0 4 23 49 1 12 32.6 3 65 -27 4 59 24 3 48 3 5 6 24 3 40 59 0.29 - 78 0 0 4 49 52 1 12 32.1 4 65 -28 5 25 18 4 14 15 5 32 16 4 7 12 0.33 - 77 0 0 5 15 14 1 12 31.4 5 65 -29 5 50 31 4 39 46 5 57 28 4 32 45 0.35 - 76 0 0 5 39 55 1 12 30.5 6 65 -30 6 15 4 5 4 36 6 21 59 4 57 37 0.36 - 75 0 0 6 3 55 1 12 29.5 7 66 -31 6 38 56 5 28 44 6 45 49 5 21 47 0.37 - 74 0 0 6 27 14 1 12 28.3 8 66 -32 7 2 7 5 52 11 7 8 58 5 45 16 0.38 - 73 0 0 6 49 52 1 12 26.9 9 66 -33 7 24 37 6 14 58 7 31 27 6 8 4 0.38 - 72 0 0 7 11 50 1 12 25.4 10 66 -34 7 46 27 6 37 3 7 53 16 6 30 11 0.39 - 71 0 0 7 33 7 1 12 23.7 11 66 -35 8 7 37 6 58 28 8 14 24 6 51 37 0.39 - 70 0 0 7 53 44 1 12 21.9 12 66 -36 8 28 6 7 19 12 8 34 52 7 12 23 0.39 - 69 0 0 8 13 40 1 12 20.0 13 66 -37 8 47 55 7 39 16 8 54 40 7 32 27 0.39 - 68 0 0 8 32 56 1 12 17.8 14 66 -38 9 7 5 7 58 39 9 13 48 7 51 52 0.39 - 67 0 0 8 51 32 1 12 15.6 15 66 -39 9 25 34 8 17 21 9 32 16 8 10 36 0.40 - 66 0 0 9 9 28 1 12 13.2 16 67 -40 9 43 23 8 35 24 9 50 4 8 28 40 0.40 - 65 0 0 9 26 44 1 12 10.7 17 67 -41 10 0 33 8 52 46 10 7 12 8 46 3 0.40 - 64 0 0 9 43 20 1 12 8.0 18 67 -42 10 17 3 9 9 28 10 23 41 9 2 47 0.40 - 63 0 0 9 59 17 1 12 5.2 19 67 -43 10 32 55 9 25 31 10 39 31 9 18 51 0.40 - 62 0 0 10 14 34 1 12 2.3 20 67 -44 10 48 6 9 40 54 10 54 42 9 34 15 0.40 - 61 0 0 10 29 13 1 11 59.2 21 67 -45 11 2 39 9 55 38 11 9 14 9 48 59 0.40 - 60 0 0 10 43 12 1 11 56.1 22 67 -46 11 16 33 10 9 42 11 23 7 10 3 5 0.40 - 59 0 0 10 56 32 1 11 52.8 23 67 -47 11 29 49 10 23 7 11 36 22 10 16 31 0.40 - 58 0 0 11 9 14 1 11 49.3 24 67 -48 11 42 26 10 35 54 11 48 58 10 29 18 0.40 - 57 0 0 11 21 17 1 11 45.8 25 68 -49 11 54 24 10 48 1 12 0 55 10 41 27 0.40 - 56 0 0 11 32 41 1 11 42.2 26 68 -50 12 5 44 10 59 30 12 12 15 10 52 56 0.40 - 55 0 0 11 43 27 1 11 38.4 27 68 -51 12 16 27 11 10 20 12 22 56 11 3 47 0.40 - 54 0 0 11 53 36 1 11 34.5 28 68 -52 12 26 31 11 20 32 12 33 0 11 14 0 0.40 - 53 0 0 12 3 6 1 11 30.5 29 68 -53 12 35 58 11 30 6 12 42 26 11 23 34 0.40 - 52 0 0 12 11 58 1 11 26.4 30 68 -54 12 44 46 11 39 1 12 51 14 11 32 31 0.40 - 51 0 0 12 20 12 1 11 22.2 31 68 -55 12 52 58 11 47 19 12 59 25 11 40 49 0.40 - 50 0 0 12 27 49 1 11 17.9 32 68 -56 13 0 32 11 54 59 13 6 58 11 48 29 0.40 - 49 0 0 12 34 49 1 11 13.5 33 68 -57 13 7 29 12 2 1 13 13 54 11 55 32 0.40 - 48 0 0 12 41 11 1 11 8.9 34 68 -58 13 13 48 12 8 26 13 20 13 12 1 57 0.40 - 47 0 0 12 46 56 1 11 4.3 35 68 -59 13 19 31 12 14 13 13 25 56 12 7 45 0.40 - 46 0 0 12 52 3 1 10 59.6 36 68 -60 13 24 37 12 19 22 13 31 1 12 12 55 0.40 - 45 0 0 12 56 34 1 10 54.8 37 68 -61 13 29 5 12 23 55 13 35 29 12 17 28 0.40 - 44 0 0 13 0 28 1 10 49.8 37 68 -61 13 32 58 12 27 50 13 39 21 12 21 23 0.40 - 43 0 0 13 3 44 1 10 44.8 38 68 -62 13 36 13 12 31 8 13 42 36 12 24 42 0.40 - 42 0 0 13 6 24 1 10 39.7 39 68 -63 13 38 52 12 33 49 13 45 15 12 27 23 0.40 - 41 0 0 13 8 28 1 10 34.5 40 68 -64 13 40 54 12 35 54 13 47 17 12 29 27 0.40 - 40 0 0 13 9 54 1 10 29.2 41 68 -65 13 42 20 12 37 21 13 48 43 12 30 55 0.40 - 39 0 0 13 10 45 1 10 23.8 42 68 -66 13 43 10 12 38 12 13 49 33 12 31 46 0.40 - 38 0 0 13 10 58 1 10 18.3 43 68 -67 13 43 23 12 38 25 13 49 46 12 31 59 0.40 - 37 0 0 13 10 35 1 10 12.7 44 68 -68 13 43 0 12 38 2 13 49 23 12 31 36 0.40 - 36 0 0 13 9 36 1 10 7.1 45 68 -69 13 42 1 12 37 3 13 48 24 12 30 37 0.40 - 35 0 0 13 8 0 1 10 1.3 45 68 -69 13 40 26 12 35 27 13 46 49 12 29 1 0.40 - 34 0 0 13 5 48 1 9 55.5 46 67 -70 13 38 14 12 33 14 13 44 37 12 26 48 0.40 - 33 0 0 13 2 59 1 9 49.6 47 67 -71 13 35 26 12 30 24 13 41 50 12 23 58 0.40 - 32 0 0 12 59 34 1 9 43.6 48 67 -72 13 32 3 12 26 58 13 38 26 12 20 32 0.40 - 31 0 0 12 55 33 1 9 37.5 49 67 -73 13 28 2 12 22 56 13 34 26 12 16 29 0.40 - 30 0 0 12 50 55 1 9 31.3 50 66 -73 13 23 26 12 18 17 13 29 50 12 11 49 0.40 - 29 0 0 12 45 41 1 9 25.1 51 66 -74 13 18 14 12 13 1 13 24 38 12 6 33 0.40 - 28 0 0 12 39 51 1 9 18.7 51 66 -75 13 12 25 12 7 8 13 18 50 12 0 41 0.40 - 27 0 0 12 33 24 1 9 12.3 52 65 -76 13 6 0 12 0 39 13 12 25 11 54 11 0.40 - 26 0 0 12 26 20 1 9 5.8 53 65 -76 12 58 59 11 53 34 13 5 25 11 47 5 0.40 - 25 0 0 12 18 41 1 8 59.2 54 64 -77 12 51 22 11 45 51 12 57 48 11 39 22 0.40 - 24 0 0 12 10 24 1 8 52.6 55 64 -77 12 43 9 11 37 32 12 49 35 11 31 3 0.40 - 23 0 0 12 1 32 1 8 45.8 55 63 -78 12 34 19 11 28 37 12 40 46 11 22 6 0.40 - 22 0 0 11 52 2 1 8 39.0 56 62 -78 12 24 52 11 19 4 12 31 20 11 12 33 0.40 - 21 0 0 11 41 56 1 8 32.2 57 62 -79 12 14 50 11 8 55 12 21 18 11 2 23 0.40 - 20 0 0 11 31 13 1 8 25.2 58 61 -79 12 4 11 10 58 8 12 10 40 10 51 36 0.40 - 19 0 0 11 19 54 1 8 18.2 58 60 -79 11 52 55 10 46 45 11 59 25 10 40 12 0.40 - 18 0 0 11 7 58 1 8 11.1 59 59 -79 11 41 3 10 34 45 11 47 33 10 28 11 0.40 - 17 0 0 10 55 25 1 8 3.9 60 58 -80 11 28 34 10 22 8 11 35 5 10 15 33 0.40 - 16 0 0 10 42 15 1 7 56.6 61 57 -79 11 15 28 10 8 54 11 22 0 10 2 18 0.40 - 15 0 0 10 28 28 1 7 49.3 61 56 -79 11 1 46 9 55 2 11 8 19 9 48 26 0.40 - 14 0 0 10 14 4 1 7 41.9 62 55 -79 10 47 27 9 40 34 10 54 1 9 33 56 0.40 - 13 0 0 9 59 3 1 7 34.5 62 54 -79 10 32 31 9 25 28 10 39 6 9 18 49 0.40 - 12 0 0 9 43 25 1 7 27.0 63 52 -78 10 16 58 9 9 44 10 23 34 9 3 5 0.40 - 11 0 0 9 27 10 1 7 19.4 64 51 -78 10 0 48 8 53 24 10 7 25 8 46 43 0.40 - 10 0 0 9 10 18 1 7 11.8 64 49 -77 9 44 1 8 36 26 9 50 39 8 29 44 0.40 - 9 0 0 8 52 48 1 7 4.0 65 48 -77 9 26 37 8 18 51 9 33 16 8 12 8 0.40 - 8 0 0 8 34 41 1 6 56.3 65 46 -76 9 8 36 8 0 38 9 15 16 7 53 54 0.40 - 7 0 0 8 15 57 1 6 48.5 66 44 -75 8 49 58 7 41 47 8 56 39 7 35 2 0.40 - 6 0 0 7 56 35 1 6 40.6 66 42 -75 8 30 43 7 22 19 8 37 25 7 15 33 0.40 - 5 0 0 7 36 36 1 6 32.7 67 40 -74 8 10 50 7 2 14 8 17 34 6 55 26 0.40 - 4 0 0 7 16 0 1 6 24.7 67 38 -73 7 50 20 6 41 31 7 57 5 6 34 42 0.40 - 3 0 0 6 54 46 1 6 16.6 67 36 -72 7 29 13 6 20 10 7 36 0 6 13 20 0.40 - 2 0 0 6 32 55 1 6 8.5 67 34 -71 7 7 29 5 58 12 7 14 17 5 51 20 0.40 - 1 0 0 6 10 27 1 6 0.4 68 31 -70 6 45 8 5 35 37 6 51 57 5 28 43 0.40 - 0 0 0 5 47 21 1 5 52.2 68 29 -69 6 22 9 5 12 24 6 29 0 5 5 29 0.40 1 0 0 5 23 38 1 5 44.0 68 27 -69 5 58 33 4 48 33 6 5 26 4 41 37 0.40 2 0 0 4 59 18 1 5 35.8 68 24 -68 5 34 21 4 24 5 5 41 14 4 17 7 0.41 3 0 0 4 34 20 1 5 27.5 68 22 -67 5 9 31 3 59 0 5 16 26 3 52 1 0.41 4 0 0 4 8 46 1 5 19.2 68 19 -66 4 44 5 3 33 18 4 51 1 3 26 17 0.41 5 0 0 3 42 35 1 5 10.8 68 17 -65 4 18 1 3 6 59 4 25 0 2 59 56 0.41 6 0 0 3 15 47 1 5 2.4 68 14 -64 3 51 22 2 40 2 3 58 21 2 32 58 0.41 7 0 0 2 48 22 1 4 54.0 67 12 -63 3 24 5 2 12 29 3 31 7 2 5 24 0.41 8 0 0 2 20 21 1 4 45.6 67 9 -62 2 56 12 1 44 20 3 3 16 1 37 12 0.41 9 0 0 1 51 44 1 4 37.1 67 7 -61 2 27 44 1 15 34 2 34 48 1 8 25 0.41 10 0 0 1 22 31 1 4 28.7 66 5 -60 1 58 39 0 46 12 2 5 46 0 39 1 0.41 11 0 0 0 52 42 1 4 20.2 66 2 -59 1 28 59 0 16 15 1 36 7 0 9 2 0.41 12 0 0 0 22 18 1 4 11.7 65 0 -57 0 58 43 - 0 14 19 1 5 53 - 0 21 33 0.41 13 0 0 - 0 8 42 1 4 3.3 65 358 -56 0 27 53 - 0 45 27 0 35 4 - 0 52 43 0.41 14 0 0 - 0 40 16 1 3 54.8 64 356 -55 - 0 3 32 - 1 17 10 0 3 41 - 1 24 28 0.41 15 0 0 - 1 12 24 1 3 46.3 64 354 -54 - 0 35 32 - 1 49 28 - 0 28 17 - 1 56 47 0.41 16 0 0 - 1 45 6 1 3 37.9 63 352 -53 - 1 8 5 - 2 22 19 - 1 0 48 - 2 29 41 0.41 17 0 0 - 2 18 22 1 3 29.5 62 351 -52 - 1 41 12 - 2 55 44 - 1 33 53 - 3 3 8 0.41 18 0 0 - 2 52 11 1 3 21.0 62 349 -51 - 2 14 51 - 3 29 42 - 2 7 31 - 3 37 8 0.41 19 0 0 - 3 26 32 1 3 12.7 61 348 -50 - 2 49 3 - 4 4 13 - 2 41 41 - 4 11 40 0.41 20 0 0 - 4 1 25 1 3 4.3 60 346 -49 - 3 23 47 - 4 39 15 - 3 16 23 - 4 46 44 0.41 21 0 0 - 4 36 49 1 2 56.0 59 345 -48 - 3 59 2 - 5 14 48 - 3 51 36 - 5 22 19 0.41 22 0 0 - 5 12 44 1 2 47.7 58 343 -47 - 4 34 47 - 5 50 52 - 4 27 19 - 5 58 25 0.41 23 0 0 - 5 49 8 1 2 39.5 58 342 -45 - 5 11 2 - 6 27 26 - 5 3 33 - 6 35 1 0.41 24 0 0 - 6 26 1 1 2 31.3 57 341 -44 - 5 47 47 - 7 4 29 - 5 40 15 - 7 12 5 0.41 25 0 0 - 7 3 23 1 2 23.2 56 340 -43 - 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Uncertainty in time = +/- 3 secs Prediction of 2023 Jul 12.0 Data for the target star ------------------------ * name: HIP 46689 * constellation : Leo * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 09 31 06.1417 DE: +25 02 49.372 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 09 31 06.1417 DE: +25 02 49.372 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.400,0.400) * V mag [mag]: 6.6 * B mag [mag]: 8.1 * Diameter [mas]: 2.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (769) Tatjana asteroid class: approx. diameter [km]: 107 approx. diameter ["]: 0.053 distance from Earth [AU]: 2.78740 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#62 date of fit: 2023 Apr 24 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): 0.020", 0.005", 109.721° remarks: * orbital elements for (769)Tatjana : Mean anomaly = 208.0956514437 deg Arg. of pericenter = 253.1352797426 deg Long. of node = 38.3688008306 deg Inclination = 7.3699169451 deg Eccentricity = 0.1865950165 Semimajor axis = 3.1669398071 AU Perihelion dist = 2.5760046217 AU Mag: H = 9.06, G = 0.15 Epoch of elements : MJD 60325.04551766 TDT (2024 Jan 16.0455) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#622023Apr24,7.90,2024,1,16,1.092421,-0.162580,-0.338614,-7.153076,3.432548,-0.002458,-0.000185,0.000001,-0.000001 11.7589,24.9400,165.97,-21.06,False HIP 46689,9.51837268,25.0470478,8.13,6.59,5.76,2.0,4,,9.54174597,24.9399562,8.02,8.40,0,0,0 769,Tatjana,14.61,111.080,2.7874,0,0,-1.659,10.83,,5.4,0 0,207.9128,2024,1,15,253.1353,38.3688,7.3699,0.18660,3.16694,2.57600,9.06,5.0,0.15 1.099,0.0203,0.0050,110,0.0054,Known errors,1.47,0,-1,-1 20240116__46689,60137.02 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 12, 00:23 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org