IOTA/IOTA-ES occultation update for (224) Oceana / TYC 1875-00393-1 event on 2023 Mar 03, 10:46 UT Visible from China Summary ------- On 2023 Mar 03 UT, the 59.5 km diameter asteroid (224) Oceana will occult a 11.7 mag star in the constellation Auriga for observers along a path across China. In the case of an occultation, the combined light of the asteroid and the star will drop by 2.16 mag to 13.74 mag (the magnitude of the asteroid) for at most 7.170 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: 2023 Mar 03, 10:33 - 2023 Mar 03, 10:59 * geocentric midpoint of event [JD]: 2460006.94920641 * magnitude of target star: 11.74 * magnitude drop [mag]: 2.16 * estimated maximum duration [s]: 7.170 * Moon: 86 % sunlit, 29° distance * Sun: 106° distance * rough path description: China The occultation path -------------------- * approximate projected width [km]: 61 * 1 sigma uncertainty interval [path widths]: +/- 0.17 * 1 sigma uncertainty interval [seconds]: +/- 3.3 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.017, +/- 0.005) * 1 sigma uncertainty ellipse (major, minor, PA): (0.017", 0.004", 97°) * approx speed of asteroid's shadow [km/s]: 8.2932 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 1875-00393-1 by 224 Oceana on 2023 Mar 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 33 0 0 .. .. .... .. .. .. .. .. .. .. .. .. 10 51 8 .. .. .. 10 57 43 .... 34 0 0 11 6 36 10 34 15.1 1 60 70 10 47 45 11 25 25 10 41 11 11 31 58 .... 35 0 0 11 40 22 10 34 15.6 2 60 69 11 21 36 11 59 8 11 15 3 12 5 39 0.05 36 0 0 12 13 34 10 34 16.4 3 60 68 11 54 51 12 32 15 11 48 20 12 38 45 0.09 37 0 0 12 46 9 10 34 17.4 5 61 67 12 27 31 13 4 47 12 21 2 13 11 15 0.10 38 0 0 13 18 9 10 34 18.8 6 61 66 12 59 35 13 36 42 12 53 7 13 43 9 0.12 39 0 0 13 49 32 10 34 20.4 7 61 65 13 31 2 14 8 0 13 24 36 14 14 26 0.12 40 0 0 14 20 17 10 34 22.3 8 61 64 14 1 52 14 38 42 13 55 27 14 45 6 0.13 41 0 0 14 50 26 10 34 24.5 9 61 63 14 32 4 15 8 46 14 25 41 15 15 8 0.13 42 0 0 15 19 56 10 34 27.0 10 62 62 15 1 39 15 38 12 14 55 17 15 44 33 0.14 43 0 0 15 48 48 10 34 29.7 11 62 61 15 30 36 16 7 0 15 24 15 16 13 20 0.14 44 0 0 16 17 3 10 34 32.7 12 62 60 15 58 54 16 35 10 15 52 35 16 41 28 0.14 45 0 0 16 44 38 10 34 36.0 13 63 59 16 26 34 17 2 41 16 20 16 17 8 58 0.15 46 0 0 17 11 35 10 34 39.4 14 63 58 16 53 35 17 29 34 16 47 18 17 35 49 0.15 47 0 0 17 37 52 10 34 43.2 15 63 57 17 19 56 17 55 47 17 13 42 18 2 1 0.15 48 0 0 18 3 31 10 34 47.2 16 63 56 17 45 39 18 21 22 17 39 26 18 27 34 0.15 49 0 0 18 28 31 10 34 51.4 17 64 55 18 10 43 18 46 18 18 4 31 18 52 29 0.15 50 0 0 18 52 51 10 34 55.8 19 64 54 18 35 7 19 10 34 18 28 57 19 16 44 0.15 51 0 0 19 16 32 10 35 0.4 20 64 53 18 58 52 19 34 11 18 52 43 19 40 19 0.16 52 0 0 19 39 34 10 35 5.3 21 65 52 19 21 57 19 57 9 19 15 50 20 3 16 0.16 53 0 0 20 1 56 10 35 10.4 22 65 51 19 44 23 20 19 27 19 38 17 20 25 33 0.16 54 0 0 20 23 39 10 35 15.7 23 65 50 20 6 10 20 41 7 20 0 5 20 47 11 0.16 55 0 0 20 44 42 10 35 21.2 24 66 49 20 27 17 21 2 6 20 21 13 21 8 10 0.16 56 0 0 21 5 7 10 35 26.8 25 66 48 20 47 45 21 22 27 20 41 42 21 28 29 0.16 57 0 0 21 24 52 10 35 32.7 26 66 47 21 7 33 21 42 9 21 1 32 21 48 9 0.16 58 0 0 21 43 57 10 35 38.8 27 67 46 21 26 43 22 1 11 21 20 42 22 7 11 0.16 59 0 0 22 2 24 10 35 45.0 28 67 45 21 45 12 22 19 34 21 39 13 22 25 33 0.16 60 0 0 22 20 11 10 35 51.5 29 67 44 22 3 3 22 37 19 21 57 5 22 43 16 0.17 61 0 0 22 37 20 10 35 58.1 30 68 43 22 20 15 22 54 24 22 14 18 23 0 20 0.17 62 0 0 22 53 50 10 36 4.9 31 68 42 22 36 47 23 10 51 22 30 52 23 16 46 0.17 63 0 0 23 9 40 10 36 11.8 32 68 42 22 52 41 23 26 39 22 46 46 23 32 33 0.17 64 0 0 23 24 53 10 36 18.9 33 69 41 23 7 56 23 41 48 23 2 2 23 47 41 0.17 65 0 0 23 39 26 10 36 26.2 34 69 40 23 22 32 23 56 19 23 16 39 24 2 11 0.17 66 0 0 23 53 21 10 36 33.6 35 69 39 23 36 30 24 10 11 23 30 38 24 16 3 0.17 67 0 0 24 6 38 10 36 41.2 35 70 38 23 49 49 24 23 26 23 43 58 24 29 16 0.17 68 0 0 24 19 16 10 36 49.0 36 70 37 24 2 30 24 36 2 23 56 40 24 41 51 0.17 69 0 0 24 31 16 10 36 56.9 37 70 36 24 14 33 24 47 59 24 8 43 24 53 48 0.17 70 0 0 24 42 39 10 37 4.9 38 71 35 24 25 57 24 59 19 24 20 8 25 5 7 0.17 71 0 0 24 53 23 10 37 13.1 39 71 34 24 36 43 25 10 2 24 30 55 25 15 49 0.17 72 0 0 25 3 29 10 37 21.5 40 71 33 24 46 51 25 20 6 24 41 4 25 25 52 0.17 73 0 0 25 12 58 10 37 29.9 41 71 32 24 56 22 25 29 33 24 50 35 25 35 19 0.18 74 0 0 25 21 48 10 37 38.5 42 72 31 25 5 14 25 38 22 24 59 28 25 44 7 0.18 75 0 0 25 30 1 10 37 47.3 43 72 31 25 13 29 25 46 33 25 7 43 25 52 18 0.18 76 0 0 25 37 37 10 37 56.2 44 72 30 25 21 6 25 54 7 25 15 21 25 59 52 0.18 77 0 0 25 44 35 10 38 5.2 45 73 29 25 28 5 26 1 4 25 22 21 26 6 48 0.18 78 0 0 25 50 56 10 38 14.4 46 73 28 25 34 27 26 7 23 25 28 43 26 13 7 0.18 79 0 0 25 56 39 10 38 23.6 47 73 27 25 40 12 26 13 5 25 34 28 26 18 49 0.18 80 0 0 26 1 45 10 38 33.0 48 73 26 25 45 18 26 18 10 25 39 35 26 23 53 0.18 81 0 0 26 6 13 10 38 42.6 49 74 25 25 49 48 26 22 38 25 44 5 26 28 21 0.18 82 0 0 26 10 5 10 38 52.2 49 74 24 25 53 40 26 26 29 25 47 57 26 32 11 0.18 83 0 0 26 13 19 10 39 2.0 50 74 23 25 56 55 26 29 42 25 51 12 26 35 24 0.18 84 0 0 26 15 55 10 39 11.9 51 74 22 25 59 32 26 32 18 25 53 49 26 38 0 0.18 85 0 0 26 17 55 10 39 22.0 52 74 22 26 1 32 26 34 17 25 55 49 26 39 59 0.18 86 0 0 26 19 17 10 39 32.1 53 75 21 26 2 54 26 35 39 25 57 12 26 41 21 0.18 87 0 0 26 20 2 10 39 42.4 54 75 20 26 3 39 26 36 24 25 57 57 26 42 6 0.18 88 0 0 26 20 9 10 39 52.8 55 75 19 26 3 46 26 36 31 25 58 4 26 42 13 0.18 89 0 0 26 19 39 10 40 3.4 56 75 18 26 3 16 26 36 2 25 57 34 26 41 43 0.18 90 0 0 26 18 32 10 40 14.0 57 75 17 26 2 8 26 34 54 25 56 26 26 40 36 0.18 91 0 0 26 16 47 10 40 24.8 58 75 16 26 0 23 26 33 10 25 54 40 26 38 52 0.19 92 0 0 26 14 24 10 40 35.7 59 75 15 25 57 59 26 30 48 25 52 17 26 36 30 0.19 93 0 0 26 11 23 10 40 46.7 59 75 14 25 54 58 26 27 48 25 49 15 26 33 30 0.19 94 0 0 26 7 45 10 40 57.8 60 75 14 25 51 19 26 24 10 25 45 36 26 29 53 0.19 95 0 0 26 3 29 10 41 9.0 61 75 13 25 47 2 26 19 55 25 41 18 26 25 38 0.19 96 0 0 25 58 34 10 41 20.4 62 75 12 25 42 6 26 15 1 25 36 22 26 20 45 0.19 97 0 0 25 53 1 10 41 31.9 63 75 11 25 36 32 26 9 30 25 30 48 26 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Uncertainty in time = +/- 3 secs Prediction of 2023 Feb 15.9 Data for the target star ------------------------ * name: TYC 1875-00393-1 * constellation : Auriga * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 05 52 47.7465 DE: +29 42 05.551 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 05 52 47.7464 DE: +29 42 05.551 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.100,0.100) * V mag [mag]: 11.7 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (224) Oceana asteroid class: approx. diameter [km]: 60 approx. diameter ["]: 0.035 distance from Earth [AU]: 2.31640 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#69 date of fit: 2023 Feb 07 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): 0.017", 0.004", 96.724° remarks: * orbital elements for (224)Oceana : Mean anomaly = 194.4150728865 deg Arg. of pericenter = 282.6344416695 deg Long. of node = 352.7483944700 deg Inclination = 5.8458984443 deg Eccentricity = 0.0450937421 Semimajor axis = 2.6443182423 AU Perihelion dist = 2.5250760373 AU Mag: H = 8.68, G = 0.15 Epoch of elements : MJD 60006.44916667 TDT (2023 Mar 03.4492) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#692023Feb07,7.17,2023,3,3,10.780954,-0.069587,-0.167911,4.323156,-1.794801,0.005604,-0.000122,0.000000,0.000000 125.8977,29.7079,21.28,-6.83,False TYC 1875-00393-1,5.87992962,29.7015421,0.00,11.74,0.00,0.0,0,,5.90455575,29.7079187,2.16,0.00,0,0,0 224,Oceana,13.74,59.5,2.3164,0,0,1.261,-6.81,,2.8,0 0,194.3121,2023,3,3,282.6344,352.7484,5.8459,0.04509,2.64432,2.52508,8.71,5.0,0.15 1.174,0.0167,0.0043,97,0.0062,Known errors,-1.00,-1,-1,-1 20230303_0393-1,59990.86 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Feb 15, 20:42 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org