IOTA/IOTA-ES occultation update for (416) Vaticana / TYC 2496-00121-1 event on 2021 Jan 21, 17:20 UT Visible from W Australia Summary ------- On 2021 Jan 21 UT, the 85 km diameter asteroid (416) Vaticana will occult a 9.0 mag star in the constellation Lynx for observers along a path across W Australia. In the case of an occultation, the combined light of the asteroid and the star will drop by 3.28 mag to 12.26 mag (the magnitude of the asteroid) for at most 6.0 seconds. This update is based on UNSO/Flagstaff astrometry for the asteroid kindly provided by Hugh Harris, astrometry for the asteroid kindly provided by Bill Owen, 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: 2021 Jan 21, 17:14 - 2021 Jan 21, 17:25 * geocentric midpoint of event [JD]: 2459236.22215417 * magnitude of target star: 9.03 * magnitude drop [mag]: 3.28 * estimated maximum duration [s]: 6.0 * Moon: 58 % sunlit, 90° distance * Sun: 160° distance * rough path description: W Australia Additional comments ------------------- RUWE high The occultation path -------------------- * approximate projected width [km]: 129 * 1 sigma uncertainty interval [path widths]: +/- 0.24 * 1 sigma uncertainty interval [seconds]: +/- 2.5 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.024, +/- 0.013) * 1 sigma uncertainty ellipse (major, minor, PA): (0.024", 0.012", 104°) * approx speed of asteroid's shadow [km/s]: 14.2316 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 2496-00121-1 by 416 Vaticana on 2021 Jan 21 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 ' " Longitude Longitude Longitude Longitude 138 34 15 -54 0 0 17 15 1.2 0 344 -11 139 36 45 137 31 12 ... .. .. 137 0 21 .... 138 4 19 -53 0 0 17 15 1.3 1 344 -12 139 5 39 137 2 28 139 35 17 136 32 11 0.49 137 33 31 -52 0 0 17 15 1.7 2 345 -13 138 33 45 136 32 45 139 2 51 136 3 0 0.80 137 1 51 -51 0 0 17 15 2.3 3 345 -14 138 1 4 136 2 6 138 29 41 135 32 51 0.92 136 29 19 -50 0 0 17 15 3.1 4 346 -15 137 27 37 135 30 30 137 55 46 135 1 43 0.98 135 55 56 -49 0 0 17 15 4.2 5 346 -16 136 53 22 134 58 0 137 21 7 134 29 38 1.02 135 21 43 -48 0 0 17 15 5.5 7 346 -17 136 18 21 134 24 34 136 45 42 133 56 36 1.05 134 46 38 -47 0 0 17 15 7.0 8 347 -18 135 42 32 133 50 14 136 9 32 133 22 37 1.07 134 10 43 -46 0 0 17 15 8.8 9 347 -19 135 5 56 133 14 59 135 32 37 132 47 42 1.08 133 33 56 -45 0 0 17 15 10.8 10 348 -20 134 28 32 132 38 49 134 54 54 132 11 49 1.09 132 56 16 -44 0 0 17 15 13.1 11 348 -21 133 50 19 132 1 43 134 16 25 131 35 0 1.10 132 17 44 -43 0 0 17 15 15.7 12 349 -22 133 11 16 131 23 41 133 37 7 130 57 13 1.11 131 38 18 -42 0 0 17 15 18.5 13 349 -23 132 31 22 130 44 42 132 57 0 130 18 27 1.12 130 57 56 -41 0 0 17 15 21.5 14 350 -24 131 50 37 130 4 45 132 16 2 129 38 41 1.12 130 16 38 -40 0 0 17 15 24.9 15 350 -26 131 8 57 129 23 48 131 34 12 128 57 54 1.12 129 34 22 -39 0 0 17 15 28.5 16 351 -27 130 26 23 128 41 50 130 51 28 128 16 5 1.13 128 51 7 -38 0 0 17 15 32.4 17 351 -28 129 42 51 127 58 49 130 7 49 127 33 12 1.13 128 6 49 -37 0 0 17 15 36.5 18 352 -29 128 58 21 127 14 44 129 23 12 126 49 12 1.13 127 21 28 -36 0 0 17 15 41.0 19 353 -30 128 12 49 126 29 32 128 37 36 126 4 4 1.14 126 35 0 -35 0 0 17 15 45.7 20 353 -31 127 26 14 125 43 10 127 50 57 125 17 45 1.14 125 47 23 -34 0 0 17 15 50.7 22 354 -32 126 38 33 124 55 36 127 3 14 124 30 13 1.14 124 58 34 -33 0 0 17 15 56.1 23 354 -34 125 49 43 124 6 48 126 14 23 123 41 24 1.14 124 8 30 -32 0 0 17 16 1.7 24 355 -35 124 59 41 123 16 40 125 24 21 122 51 14 1.14 123 17 6 -31 0 0 17 16 7.6 25 356 -36 124 8 23 122 25 10 124 33 5 121 59 41 1.15 122 24 20 -30 0 0 17 16 13.9 26 357 -37 123 15 45 121 32 14 123 40 31 121 6 39 1.15 121 30 6 -29 0 0 17 16 20.5 27 357 -38 122 21 43 120 37 46 122 46 35 120 12 4 1.15 120 34 19 -28 0 0 17 16 27.4 28 358 -40 121 26 13 119 41 42 121 51 11 119 15 51 1.15 119 36 55 -27 0 0 17 16 34.7 29 359 -41 120 29 8 118 43 55 120 54 15 118 17 52 1.15 118 37 45 -26 0 0 17 16 42.3 30 360 -42 119 30 23 117 44 20 119 55 42 117 18 3 1.15 117 36 45 -25 0 0 17 16 50.4 31 1 -43 118 29 51 116 42 48 118 55 23 116 16 15 1.15 116 33 45 -24 0 0 17 16 58.7 32 2 -45 117 27 26 115 39 11 117 53 13 115 12 19 1.15 115 28 37 -23 0 0 17 17 7.5 33 3 -46 116 22 57 114 33 19 116 49 3 114 6 5 1.15 114 21 10 -22 0 0 17 17 16.8 34 4 -47 115 16 16 113 25 3 115 42 43 112 57 22 1.15 113 11 13 -21 0 0 17 17 26.4 35 5 -48 114 7 13 112 14 7 114 34 4 111 45 57 1.15 111 58 32 -20 0 0 17 17 36.5 35 6 -49 112 55 33 111 0 19 113 22 52 110 31 35 1.15 110 42 51 -19 0 0 17 17 47.1 36 8 -51 111 41 3 109 43 21 112 8 55 109 13 56 1.15 109 23 51 -18 0 0 17 17 58.2 37 9 -52 110 23 26 108 22 52 110 51 55 107 52 40 1.15 108 1 10 -17 0 0 17 18 9.9 38 11 -53 109 2 20 106 58 26 109 31 33 106 27 20 1.15 106 34 21 -16 0 0 17 18 22.2 39 12 -54 107 37 23 105 29 35 108 7 26 104 57 24 1.15 105 2 51 -15 0 0 17 18 35.2 39 14 -55 106 8 4 103 55 39 106 39 6 103 22 12 1.15 103 25 57 -14 0 0 17 18 48.8 40 16 -56 104 33 46 102 15 52 105 5 58 101 40 53 1.15 101 42 47 -13 0 0 17 19 3.4 40 18 -57 102 53 43 100 29 11 103 27 19 99 52 19 1.15 99 52 10 -12 0 0 17 19 18.9 41 20 -58 101 6 55 98 34 12 101 42 13 97 54 59 1.15 97 52 30 -11 0 0 17 19 35.5 41 22 -59 99 12 2 96 28 58 99 49 25 95 46 41 1.15 95 41 28 -10 0 0 17 19 53.4 41 24 -59 97 7 11 94 10 34 97 47 15 93 24 10 1.15 Latitude Latitude Latitude Latitude 94 0 0 - 9 17 31 17 20 7.2 41 26 -60 - 8 39 52 - 9 55 41 - 8 21 44 -10 14 26 1.15 93 0 0 - 8 54 0 17 20 15.2 41 27 -60 - 8 16 37 - 9 31 54 - 7 58 37 - 9 50 31 1.15 92 0 0 - 8 31 40 17 20 23.2 41 28 -60 - 7 54 31 - 9 9 18 - 7 36 38 - 9 27 47 1.15 91 0 0 - 8 10 29 17 20 31.1 41 29 -60 - 7 33 35 - 8 47 53 - 7 15 48 - 9 6 14 1.15 90 0 0 - 7 50 27 17 20 39.0 40 30 -60 - 7 13 46 - 8 27 37 - 6 56 6 - 8 45 52 1.15 89 0 0 - 7 31 34 17 20 46.8 40 31 -60 - 6 55 5 - 8 8 31 - 6 37 31 - 8 26 40 1.15 88 0 0 - 7 13 49 17 20 54.5 40 32 -59 - 6 37 31 - 7 50 34 - 6 20 2 - 8 8 36 1.15 87 0 0 - 6 57 10 17 21 2.1 40 33 -59 - 6 21 3 - 7 33 45 - 6 3 39 - 7 51 42 1.15 86 0 0 - 6 41 39 17 21 9.7 39 34 -59 - 6 5 41 - 7 18 3 - 5 48 22 - 7 35 55 1.15 85 0 0 - 6 27 13 17 21 17.1 39 35 -59 - 5 51 25 - 7 3 28 - 5 34 10 - 7 21 15 1.15 84 0 0 - 6 13 53 17 21 24.5 39 36 -58 - 5 38 13 - 6 49 59 - 5 21 2 - 7 7 42 1.15 83 0 0 - 6 1 38 17 21 31.8 38 36 -58 - 5 26 6 - 6 37 36 - 5 8 58 - 6 55 16 1.15 82 0 0 - 5 50 28 17 21 39.0 38 37 -57 - 5 15 3 - 6 26 19 - 4 57 58 - 6 43 55 1.15 81 0 0 - 5 40 23 17 21 46.1 37 38 -57 - 5 5 3 - 6 16 8 - 4 48 2 - 6 33 40 1.15 80 0 0 - 5 31 21 17 21 53.2 37 39 -57 - 4 56 7 - 6 7 1 - 4 39 8 - 6 24 31 1.15 79 0 0 - 5 23 24 17 22 0.1 36 39 -56 - 4 48 15 - 5 58 59 - 4 31 18 - 6 16 26 1.15 78 0 0 - 5 16 31 17 22 7.0 36 40 -55 - 4 41 25 - 5 52 1 - 4 24 30 - 6 9 27 1.15 77 0 0 - 5 10 41 17 22 13.7 35 41 -55 - 4 35 38 - 5 46 8 - 4 18 45 - 6 3 32 1.16 76 0 0 - 5 5 54 17 22 20.3 35 41 -54 - 4 30 54 - 5 41 19 - 4 14 2 - 5 58 41 1.16 75 0 0 - 5 2 11 17 22 26.9 34 42 -54 - 4 27 13 - 5 37 34 - 4 10 22 - 5 54 55 1.16 74 0 0 - 4 59 31 17 22 33.3 34 43 -53 - 4 24 34 - 5 34 53 - 4 7 44 - 5 52 13 1.16 73 0 0 - 4 57 55 17 22 39.6 33 43 -52 - 4 22 58 - 5 33 15 - 4 6 8 - 5 50 36 1.16 72 0 0 - 4 57 21 17 22 45.9 32 44 -51 - 4 22 25 - 5 32 42 - 4 5 34 - 5 50 3 1.16 71 0 0 - 4 57 51 17 22 52.0 32 44 -51 - 4 22 54 - 5 33 13 - 4 6 3 - 5 50 34 1.16 70 0 0 - 4 59 25 17 22 58.0 31 45 -50 - 4 24 26 - 5 34 48 - 4 7 34 - 5 52 10 1.16 69 0 0 - 5 2 2 17 23 3.8 30 45 -49 - 4 27 1 - 5 37 28 - 4 10 8 - 5 54 51 1.16 68 0 0 - 5 5 43 17 23 9.6 29 46 -48 - 4 30 39 - 5 41 12 - 4 13 45 - 5 58 36 1.16 67 0 0 - 5 10 28 17 23 15.2 29 46 -47 - 4 35 20 - 5 46 1 - 4 18 25 - 6 3 27 1.16 66 0 0 - 5 16 17 17 23 20.7 28 46 -47 - 4 41 6 - 5 51 55 - 4 24 8 - 6 9 23 1.17 65 0 0 - 5 23 11 17 23 26.1 27 47 -46 - 4 47 55 - 5 58 54 - 4 30 54 - 6 16 25 1.17 64 0 0 - 5 31 11 17 23 31.4 26 47 -45 - 4 55 48 - 6 6 59 - 4 38 45 - 6 24 33 1.17 63 0 0 - 5 40 15 17 23 36.5 25 48 -44 - 5 4 46 - 6 16 10 - 4 47 40 - 6 33 48 1.17 62 0 0 - 5 50 25 17 23 41.5 25 48 -43 - 5 14 49 - 6 26 28 - 4 57 40 - 6 44 9 1.17 61 0 0 - 6 1 42 17 23 46.3 24 48 -42 - 5 25 58 - 6 37 53 - 5 8 45 - 6 55 39 1.17 60 0 0 - 6 14 6 17 23 51.0 23 49 -41 - 5 38 13 - 6 50 26 - 5 20 56 - 7 8 16 1.17 59 0 0 - 6 27 37 17 23 55.6 22 49 -40 - 5 51 35 - 7 4 8 - 5 34 13 - 7 22 2 1.18 58 0 0 - 6 42 17 17 24 0.0 21 49 -39 - 6 6 4 - 7 18 58 - 5 48 37 - 7 36 58 1.18 57 0 0 - 6 58 5 17 24 4.2 20 49 -38 - 6 21 41 - 7 34 58 - 6 4 9 - 7 53 4 1.18 56 0 0 - 7 15 3 17 24 8.3 19 50 -37 - 6 38 27 - 7 52 9 - 6 20 49 - 8 10 21 1.18 55 0 0 - 7 33 12 17 24 12.2 18 50 -36 - 6 56 22 - 8 10 31 - 6 38 38 - 8 28 50 1.18 54 0 0 - 7 52 32 17 24 15.9 17 50 -35 - 7 15 28 - 8 30 5 - 6 57 37 - 8 48 32 1.19 53 0 0 - 8 13 3 17 24 19.5 16 50 -34 - 7 35 45 - 8 50 52 - 7 17 47 - 9 9 27 1.19 52 0 0 - 8 34 48 17 24 22.9 15 51 -33 - 7 57 14 - 9 12 54 - 7 39 8 - 9 31 37 1.19 51 0 0 - 8 57 48 17 24 26.1 14 51 -32 - 8 19 56 - 9 36 11 - 8 1 42 - 9 55 3 1.19 50 0 0 - 9 22 2 17 24 29.1 13 51 -31 - 8 43 52 -10 0 44 - 8 25 30 -10 19 46 1.20 49 0 0 - 9 47 33 17 24 32.0 12 51 -30 - 9 9 3 -10 26 35 - 8 50 32 -10 45 46 1.20 48 0 0 -10 14 21 17 24 34.6 11 52 -29 - 9 35 31 -10 53 45 - 9 16 51 -11 13 7 1.21 47 0 0 -10 42 28 17 24 37.0 10 52 -28 -10 3 16 -11 22 14 - 9 44 26 -11 41 48 1.21 46 0 0 -11 11 55 17 24 39.2 9 52 -27 -10 32 21 -11 52 5 -10 13 19 -12 11 51 1.22 45 0 0 -11 42 43 17 24 41.2 8 52 -26 -11 2 45 -12 23 19 -10 43 32 -12 43 18 1.22 44 0 0 -12 14 55 17 24 42.9 7 53 -25 -11 34 30 -12 55 58 -11 15 5 -13 16 10 1.23 43 0 0 -12 48 31 17 24 44.4 6 53 -24 -12 7 39 -13 30 2 -11 48 1 -13 50 29 1.25 42 0 0 -13 23 33 17 24 45.7 5 53 -23 -12 42 12 -14 5 34 -12 22 21 -14 26 16 1.27 41 0 0 -14 0 2 17 24 46.7 4 53 -21 -13 18 11 -14 42 36 -12 58 6 -15 3 34 1.30 40 0 0 -14 38 1 17 24 47.4 3 54 -20 -13 55 38 -15 21 9 -13 35 17 -15 42 25 1.35 39 0 0 -15 17 32 17 24 47.9 1 54 -19 -14 34 35 -16 1 16 -14 13 58 -16 22 49 1.50 38 0 0 -15 58 36 17 24 48.1 0 54 -18 -15 15 2 .. .. .. .. .. .. .. .. .. 3.37 Uncertainty in time = +/- 3 secs Prediction of 2020 Dec 31.0 Data for the target star ------------------------ * name: TYC 2496-00121-1 * constellation : Lynx * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 09 14 49.7715 DE: +34 24 54.396 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 09 14 49.7715 DE: +34 24 54.397 * position source: Gaia14_DR2 * standard error: RA,DE [mas]: (1.600,1.600) * V mag [mag]: 9.0 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (416) Vaticana asteroid class: approx. diameter [km]: 85 approx. diameter ["]: 0.055 distance from Earth [AU]: 2.12940 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: Preston date of fit: 2020 Nov 29 source of used astrometry: MPC, FASTT, TMO number of used observations: 2901 number of rejected observations: 13 time covered by the observations: 1961 Apr 09 - 2020 Oct 21 1 sigma uncertainty ellipse (major, minor, PA): 0.024", 0.012", 103.6° remarks: * orbital elements for (416)Vaticana : Mean anomaly = 253.49762751 deg Arg. of pericenter = 198.22543878 deg Long. of node = 58.07618456 deg Inclination = 12.85880753 deg Eccentricity = 0.21782626 Semimajor axis = 2.79246186 AU Perihelion dist = 2.18419035 AU Mag: H = 7.70, G = 0.15 Epoch of elements : MJD 59235.72200000 TDT (2021 Jan 21.7220) ------ occelmnt file for Occult BEGIN ----------------------------------- Preston2020Nov29,6.0,2021,1,21,17.3317,-0.37138,-0.65646,-6.99238,3.95356,-0.00142,-0.00142,0.00000,0.00000 117.7672,34.3264,-77.11,-19.74,False TYC 2496-00121-1,9.24715875,34.4151101,0.00,9.03,0.00,0.0,0,,9.26879061,34.3263880 416,Vaticana,12.26,85.0,2.1294,0,0,-2.331,16.32,,5.2 0,253.3451,2021,1,21,198.2254,58.0762,12.8588,0.21783,2.79246,2.18419,7.70,5.0,0.15 1.243,0.0241,0.0121,104,0.0134,Known errors 20210121_0121-1,59214.00 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2020 Dec 31, 00:45 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org