IOTA/IOTA-ES occultation update for (3313) Mendel / TYC 6228-00766-1 event on 2024 Sep 05, 14:03 UT Visible from Summary ------- On 2024 Sep 05 UT, the 9.33032059191287 km diameter asteroid (3313) Mendel will occult a 10.8 mag star in the constellation Ophiuchus for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 6.26 mag to 17.04 mag (the magnitude of the asteroid) for at most 0.450 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 Sep 05, 13:58 - 2024 Sep 05, 14:08 * geocentric midpoint of event [JD]: 2460559.08583763 * magnitude of target star: 10.78 * magnitude drop [mag]: 6.26 * estimated maximum duration [s]: 0.450 * Moon: 6 % sunlit, 60° distance * Sun: 87° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 9 * 1 sigma uncertainty interval [path widths]: +/- 0.32 * 1 sigma uncertainty interval [seconds]: +/- 1.4 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.019, +/- 0.002) * 1 sigma uncertainty ellipse (major, minor, PA): (0.019", 0.002", 86°) * approx speed of asteroid's shadow [km/s]: 21.0667 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 6228-00766-1 by 3313 Mendel on 2024 Sep 5 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 - 36 0 0 - 1 52 37 13 58 33.7 1 111 80 - 1 55 22 - 1 49 51 - 1 57 7 - 1 48 6 .... - 35 0 0 - 2 16 4 13 58 33.8 2 111 80 - 2 18 50 - 2 13 19 - 2 20 35 - 2 11 34 0.07 - 34 0 0 - 2 39 29 13 58 34.0 3 111 80 - 2 42 15 - 2 36 43 - 2 43 59 - 2 34 59 0.05 - 33 0 0 - 3 2 50 13 58 34.4 4 111 80 - 3 5 35 - 3 0 4 - 3 7 20 - 2 58 20 0.03 - 32 0 0 - 3 26 6 13 58 34.8 5 111 80 - 3 28 52 - 3 23 21 - 3 30 36 - 3 21 36 0.03 - 31 0 0 - 3 49 18 13 58 35.4 6 111 80 - 3 52 3 - 3 46 32 - 3 53 47 - 3 44 48 0.02 - 30 0 0 - 4 12 24 13 58 36.0 7 111 79 - 4 15 9 - 4 9 38 - 4 16 53 - 4 7 54 0.02 - 29 0 0 - 4 35 24 13 58 36.8 8 111 79 - 4 38 9 - 4 32 39 - 4 39 53 - 4 30 54 0.02 - 28 0 0 - 4 58 17 13 58 37.6 9 111 78 - 5 1 2 - 4 55 32 - 5 2 47 - 4 53 48 0.01 - 27 0 0 - 5 21 4 13 58 38.6 10 111 78 - 5 23 49 - 5 18 19 - 5 25 33 - 5 16 34 0.01 - 26 0 0 - 5 43 42 13 58 39.7 11 111 77 - 5 46 27 - 5 40 57 - 5 48 11 - 5 39 13 0.01 - 25 0 0 - 6 6 13 13 58 40.8 12 110 76 - 6 8 58 - 6 3 28 - 6 10 42 - 6 1 44 0.01 - 24 0 0 - 6 28 35 13 58 42.1 14 110 76 - 6 31 20 - 6 25 50 - 6 33 3 - 6 24 6 0.01 - 23 0 0 - 6 50 48 13 58 43.5 15 110 75 - 6 53 32 - 6 48 3 - 6 55 16 - 6 46 19 0.01 - 22 0 0 - 7 12 51 13 58 44.9 16 110 74 - 7 15 35 - 7 10 6 - 7 17 19 - 7 8 23 0.01 - 21 0 0 - 7 34 44 13 58 46.5 17 110 73 - 7 37 28 - 7 31 59 - 7 39 12 - 7 30 16 0.01 - 20 0 0 - 7 56 26 13 58 48.2 18 110 72 - 7 59 10 - 7 53 42 - 8 0 54 - 7 51 58 0.01 - 19 0 0 - 8 17 57 13 58 49.9 19 110 72 - 8 20 41 - 8 15 13 - 8 22 25 - 8 13 30 0.01 - 18 0 0 - 8 39 17 13 58 51.8 20 110 71 - 8 42 1 - 8 36 33 - 8 43 44 - 8 34 50 0.00 - 17 0 0 - 9 0 25 13 58 53.8 21 109 70 - 9 3 8 - 8 57 41 - 9 4 52 - 8 55 58 0.00 - 16 0 0 - 9 21 20 13 58 55.8 22 109 69 - 9 24 4 - 9 18 36 - 9 25 47 - 9 16 53 0.00 - 15 0 0 - 9 42 2 13 58 57.9 23 109 68 - 9 44 46 - 9 39 19 - 9 46 29 - 9 37 36 0.00 - 14 0 0 -10 2 31 13 59 0.2 24 109 67 -10 5 15 - 9 59 48 -10 6 58 - 9 58 5 0.00 - 13 0 0 -10 22 47 13 59 2.5 25 109 66 -10 25 30 -10 20 4 -10 27 13 -10 18 21 0.00 - 12 0 0 -10 42 48 13 59 4.9 26 109 65 -10 45 31 -10 40 5 -10 47 14 -10 38 23 0.00 - 11 0 0 -11 2 35 13 59 7.4 27 108 64 -11 5 17 -10 59 52 -11 7 0 -10 58 10 0.00 - 10 0 0 -11 22 7 13 59 9.9 28 108 63 -11 24 49 -11 19 24 -11 26 31 -11 17 42 0.00 - 9 0 0 -11 41 23 13 59 12.6 29 108 62 -11 44 5 -11 38 41 -11 45 48 -11 36 59 0.00 - 8 0 0 -12 0 24 13 59 15.3 30 108 61 -12 3 6 -11 57 42 -12 4 49 -11 56 0 0.00 - 7 0 0 -12 19 9 13 59 18.2 31 108 60 -12 21 51 -12 16 27 -12 23 33 -12 14 45 0.00 - 6 0 0 -12 37 38 13 59 21.0 32 107 59 -12 40 20 -12 34 57 -12 42 2 -12 33 15 0.00 - 5 0 0 -12 55 50 13 59 24.0 34 107 58 -12 58 32 -12 53 9 -13 0 14 -12 51 27 0.00 - 4 0 0 -13 13 46 13 59 27.1 35 107 57 -13 16 27 -13 11 4 -13 18 9 -13 9 23 0.00 - 3 0 0 -13 31 24 13 59 30.2 36 107 56 -13 34 5 -13 28 43 -13 35 46 -13 27 1 0.00 - 2 0 0 -13 48 44 13 59 33.4 37 106 55 -13 51 25 -13 46 4 -13 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- 9 10 2 14 7 51.2 33 251 -53 - 9 12 46 - 9 7 19 - 9 14 29 - 9 5 35 0.00 111 0 0 - 8 48 55 14 7 54.2 32 250 -54 - 8 51 39 - 8 46 11 - 8 53 22 - 8 44 28 0.00 112 0 0 - 8 27 36 14 7 57.1 31 250 -55 - 8 30 20 - 8 24 52 - 8 32 3 - 8 23 8 0.00 113 0 0 - 8 6 4 14 7 59.9 29 250 -56 - 8 8 48 - 8 3 20 - 8 10 32 - 8 1 36 0.00 114 0 0 - 7 44 21 14 8 2.6 28 250 -57 - 7 47 5 - 7 41 37 - 7 48 49 - 7 39 53 0.00 115 0 0 - 7 22 27 14 8 5.3 27 250 -58 - 7 25 12 - 7 19 43 - 7 26 55 - 7 17 59 0.00 116 0 0 - 7 0 23 14 8 7.8 26 250 -59 - 7 3 7 - 6 57 38 - 7 4 51 - 6 55 54 0.00 117 0 0 - 6 38 8 14 8 10.3 25 250 -60 - 6 40 53 - 6 35 24 - 6 42 37 - 6 33 40 0.00 118 0 0 - 6 15 44 14 8 12.6 24 249 -61 - 6 18 29 - 6 13 0 - 6 20 13 - 6 11 16 0.00 119 0 0 - 5 53 12 14 8 14.9 23 249 -62 - 5 55 57 - 5 50 27 - 5 57 41 - 5 48 43 0.00 120 0 0 - 5 30 30 14 8 17.1 22 249 -63 - 5 33 15 - 5 27 45 - 5 34 59 - 5 26 1 0.00 121 0 0 - 5 7 41 14 8 19.2 21 249 -64 - 5 10 26 - 5 4 56 - 5 12 10 - 5 3 12 0.00 122 0 0 - 4 44 44 14 8 21.1 20 249 -65 - 4 47 29 - 4 41 59 - 4 49 14 - 4 40 15 0.01 123 0 0 - 4 21 41 14 8 23.0 19 249 -65 - 4 24 26 - 4 18 55 - 4 26 10 - 4 17 11 0.01 124 0 0 - 3 58 31 14 8 24.8 18 249 -66 - 4 1 16 - 3 55 45 - 4 3 0 - 3 54 1 0.01 125 0 0 - 3 35 15 14 8 26.5 17 249 -67 - 3 38 0 - 3 32 29 - 3 39 45 - 3 30 45 0.01 126 0 0 - 3 11 54 14 8 28.1 16 249 -68 - 3 14 40 - 3 9 8 - 3 16 24 - 3 7 24 0.01 127 0 0 - 2 48 28 14 8 29.5 14 249 -69 - 2 51 14 - 2 45 43 - 2 52 59 - 2 43 58 0.01 128 0 0 - 2 24 59 14 8 30.9 13 249 -70 - 2 27 45 - 2 22 13 - 2 29 29 - 2 20 29 0.01 129 0 0 - 2 1 26 14 8 32.2 12 249 -71 - 2 4 11 - 1 58 40 - 2 5 56 - 1 56 55 0.01 130 0 0 - 1 37 49 14 8 33.3 11 249 -72 - 1 40 35 - 1 35 4 - 1 42 20 - 1 33 19 0.01 131 0 0 - 1 14 11 14 8 34.4 10 249 -73 - 1 16 57 - 1 11 25 - 1 18 41 - 1 9 40 0.01 132 0 0 - 0 50 31 14 8 35.3 9 249 -74 - 0 53 16 - 0 47 45 - 0 55 1 - 0 46 0 0.01 133 0 0 - 0 26 49 14 8 36.2 8 249 -74 - 0 29 35 - 0 24 3 - 0 31 19 - 0 22 18 0.02 134 0 0 - 0 3 7 14 8 36.9 7 249 -75 - 0 5 53 - 0 0 21 - 0 7 37 0 1 24 0.02 135 0 0 0 20 36 14 8 37.6 6 249 -76 0 17 50 0 23 22 0 16 5 0 25 6 0.02 136 0 0 0 44 18 14 8 38.1 5 249 -76 0 41 32 0 47 3 0 39 47 0 48 48 0.03 137 0 0 1 7 58 14 8 38.5 4 249 -77 1 5 12 1 10 44 1 3 28 1 12 29 0.03 138 0 0 1 31 38 14 8 38.8 3 249 -78 1 28 52 1 34 23 1 27 7 1 36 8 0.05 139 0 0 1 55 15 14 8 39.0 2 249 -78 1 52 29 1 58 0 1 50 44 1 59 45 0.08 140 0 0 2 18 49 14 8 39.1 0 249 -78 2 16 3 2 21 35 2 14 19 2 23 19 0.26 Uncertainty in time = +/- 1 secs Prediction of 2023 Jul 15.5 Data for the target star ------------------------ * name: TYC 6228-00766-1 * constellation : Ophiuchus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 16 33 35.2345 DE: -21 13 08.270 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 16 33 35.2344 DE: -21 13 08.270 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 10.8 * B mag [mag]: 11.8 * Diameter [mas]: 0.10 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (3313) Mendel asteroid class: approx. diameter [km]: 9 approx. diameter ["]: 0.006 distance from Earth [AU]: 2.14650 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#48 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): 0.019", 0.002", 86.426° remarks: * orbital elements for (3313)Mendel : Mean anomaly = 13.2737328396 deg Arg. of pericenter = 346.0469251943 deg Long. of node = 272.3037343701 deg Inclination = 11.3967179912 deg Eccentricity = 0.1310626278 Semimajor axis = 2.6551338119 AU Perihelion dist = 2.3071449974 AU Mag: H = 12.38, G = 0.15 Epoch of elements : MJD 60558.58583742 TDT (2024 Sep 05.5858) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#482023Apr24,0.45,2024,9,5,14.060103,-0.000453,0.008177,11.881978,0.454299,0.005402,-0.000783,0.000000,0.000000 52.6897,-21.2714,-31.27,6.49,False TYC 6228-00766-1,16.55978738,-21.2189640,11.80,10.78,10.23,0.1,0,,16.58409449,-21.2714237,6.26,6.36,0,0,0 3313,Mendel,17.04,9.486,2.1465,0,0,3.483,1.86,,0.8,0 0,13.1403,2024,9,5,346.0469,272.3037,11.3967,0.13106,2.65513,2.30714,12.38,5.0,0.15 1.315,0.0190,0.0019,86,0.0019,Known errors,0.97,0,-1,-1 20240905_0766-1,60140.54 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 13:01 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org