IOTA/IOTA-ES occultation update for (245) Vera / TYC 6189-01147-1 event on 2023 Mar 07, 20:21 UT Visible from Australia Summary ------- On 2023 Mar 07 UT, the 73.6 km diameter asteroid (245) Vera will occult a 10.5 mag star in the constellation Libra for observers along a path across Australia. In the case of an occultation, the combined light of the asteroid and the star will drop by 3.63 mag to 14.09 mag (the magnitude of the asteroid) for at most 18.650 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: 2023 Mar 07, 19:54 - 2023 Mar 07, 20:48 * geocentric midpoint of event [JD]: 2460011.34815188 * magnitude of target star: 10.50 * magnitude drop [mag]: 3.63 * estimated maximum duration [s]: 18.650 * Moon: 100 % sunlit, 66° distance * Sun: 110° distance * rough path description: Australia Additional comments ------------------- RUWE high The occultation path -------------------- * approximate projected width [km]: 75 * 1 sigma uncertainty interval [path widths]: +/- 0.04 * 1 sigma uncertainty interval [seconds]: +/- 9.9 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.016, +/- 0.005) * 1 sigma uncertainty ellipse (major, minor, PA): (0.017", 0.001", 108°) * approx speed of asteroid's shadow [km/s]: 3.9458 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 6189-01147-1 by 245 Vera on 2023 Mar 7 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 45 0 0 8 6 10 19 54 50.0 1 108 -71 7 44 42 8 27 37 7 42 46 8 29 32 .... 46 0 0 7 46 18 19 54 50.6 2 108 -72 7 24 47 8 7 48 7 22 51 8 9 43 0.21 47 0 0 7 26 1 19 54 51.8 3 108 -73 7 4 26 7 47 33 7 2 30 7 49 29 0.21 48 0 0 7 5 17 19 54 53.5 4 108 -74 6 43 40 7 26 53 6 41 44 7 28 49 0.21 49 0 0 6 44 8 19 54 55.9 5 109 -75 6 22 28 7 5 47 6 20 32 7 7 43 0.21 50 0 0 6 22 34 19 54 58.7 6 109 -76 6 0 51 6 44 16 5 58 54 6 46 12 0.21 51 0 0 6 0 35 19 55 2.2 7 109 -77 5 38 48 6 22 19 5 36 51 6 24 16 0.21 52 0 0 5 38 10 19 55 6.3 8 109 -78 5 16 21 5 59 57 5 14 24 6 1 54 0.21 53 0 0 5 15 21 19 55 10.9 9 109 -79 4 53 28 5 37 11 4 51 31 5 39 8 0.21 54 0 0 4 52 6 19 55 16.2 10 109 -80 4 30 11 5 14 0 4 28 13 5 15 57 0.21 55 0 0 4 28 28 19 55 22.1 11 109 -81 4 6 29 4 50 24 4 4 31 4 52 22 0.21 56 0 0 4 4 25 19 55 28.6 12 109 -82 3 42 23 4 26 25 3 40 25 4 28 23 0.21 57 0 0 3 39 58 19 55 35.7 14 109 -83 3 17 53 4 2 1 3 15 55 4 3 59 0.22 58 0 0 3 15 8 19 55 43.4 15 109 -84 2 53 0 3 37 13 2 51 1 3 39 12 0.22 59 0 0 2 49 54 19 55 51.8 16 109 -85 2 27 43 3 12 3 2 25 44 3 14 1 0.22 60 0 0 2 24 17 19 56 0.8 17 109 -85 2 2 3 2 46 29 2 0 4 2 48 28 0.22 61 0 0 1 58 18 19 56 10.5 18 109 -86 1 36 1 2 20 33 1 34 1 2 22 32 0.22 62 0 0 1 31 56 19 56 20.8 19 109 -86 1 9 36 1 54 14 1 7 37 1 56 14 0.22 63 0 0 1 5 13 19 56 31.7 20 109 -86 0 42 50 1 27 34 0 40 50 1 29 34 0.22 64 0 0 0 38 9 19 56 43.4 21 109 -85 0 15 43 1 0 33 0 13 43 1 2 33 0.22 65 0 0 0 10 44 19 56 55.6 23 109 -85 - 0 11 45 0 33 11 - 0 13 46 0 35 11 0.22 66 0 0 - 0 17 1 19 57 8.5 24 109 -84 - 0 39 33 0 5 28 - 0 41 34 0 7 29 0.22 67 0 0 - 0 45 6 19 57 22.1 25 109 -83 - 1 7 40 - 0 22 34 - 1 9 42 - 0 20 33 0.22 68 0 0 - 1 13 30 19 57 36.4 26 109 -82 - 1 36 7 - 0 50 55 - 1 38 8 - 0 48 54 0.22 69 0 0 - 1 42 12 19 57 51.3 27 109 -81 - 2 4 51 - 1 19 34 - 2 6 53 - 1 17 33 0.22 70 0 0 - 2 11 11 19 58 6.8 28 109 -80 - 2 33 54 - 1 48 31 - 2 35 55 - 1 46 30 0.22 71 0 0 - 2 40 28 19 58 23.0 30 109 -79 - 3 3 12 - 2 17 45 - 3 5 15 - 2 15 43 0.22 72 0 0 - 3 10 0 19 58 39.9 31 109 -78 - 3 32 47 - 2 47 15 - 3 34 50 - 2 45 13 0.22 73 0 0 - 3 39 48 19 58 57.4 32 109 -77 - 4 2 38 - 3 17 1 - 4 4 40 - 3 14 59 0.22 74 0 0 - 4 9 50 19 59 15.6 33 109 -76 - 4 32 42 - 3 47 1 - 4 34 45 - 3 44 59 0.22 75 0 0 - 4 40 6 19 59 34.4 34 108 -74 - 5 3 0 - 4 17 15 - 5 5 3 - 4 15 12 0.22 76 0 0 - 5 10 35 19 59 53.8 35 108 -73 - 5 33 31 - 4 47 42 - 5 35 34 - 4 45 39 0.22 77 0 0 - 5 41 16 20 0 13.8 37 108 -72 - 6 4 13 - 5 18 20 - 6 6 17 - 5 16 17 0.21 78 0 0 - 6 12 7 20 0 34.5 38 108 -71 - 6 35 6 - 5 49 10 - 6 37 10 - 5 47 7 0.21 79 0 0 - 6 43 8 20 0 55.7 39 107 -70 - 7 6 9 - 6 20 10 - 7 8 13 - 6 18 6 0.21 80 0 0 - 7 14 18 20 1 17.6 40 107 -69 - 7 37 21 - 6 51 18 - 7 39 24 - 6 49 15 0.21 81 0 0 - 7 45 36 20 1 40.0 41 107 -67 - 8 8 40 - 7 22 35 - 8 10 43 - 7 20 31 0.21 82 0 0 - 8 17 0 20 2 3.0 43 107 -66 - 8 40 5 - 7 53 58 - 8 42 9 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84 -36 -21 25 12 -20 39 56 -21 27 14 -20 37 55 0.19 108 0 0 -21 30 15 20 14 22.0 72 82 -35 -21 52 51 -21 7 40 -21 54 52 -21 5 39 0.18 109 0 0 -21 57 34 20 14 53.2 73 79 -34 -22 20 7 -21 35 2 -22 22 8 -21 33 2 0.18 110 0 0 -22 24 30 20 15 24.4 74 77 -33 -22 47 0 -22 2 2 -22 49 1 -22 0 1 0.18 111 0 0 -22 51 3 20 15 55.6 75 74 -32 -23 13 29 -22 28 38 -23 15 30 -22 26 38 0.18 112 0 0 -23 17 12 20 16 26.8 76 71 -31 -23 39 35 -22 54 50 -23 41 35 -22 52 50 0.18 113 0 0 -23 42 56 20 16 57.9 76 67 -30 -24 5 15 -23 20 37 -24 7 15 -23 18 38 0.18 114 0 0 -24 8 14 20 17 29.0 77 63 -28 -24 30 31 -23 45 59 -24 32 30 -23 44 0 0.18 115 0 0 -24 33 7 20 18 0.0 78 59 -27 -24 55 20 -24 10 56 -24 57 19 -24 8 57 0.18 116 0 0 -24 57 34 20 18 30.9 78 54 -26 -25 19 43 -24 35 26 -25 21 42 -24 33 27 0.18 117 0 0 -25 21 34 20 19 1.7 79 49 -25 -25 43 40 -24 59 30 -25 45 38 -24 57 31 0.18 118 0 0 -25 45 7 20 19 32.4 79 43 -24 -26 7 9 -25 23 6 -26 9 8 -25 21 8 0.18 119 0 0 -26 8 13 20 20 2.9 80 37 -23 -26 30 11 -25 46 16 -26 32 9 -25 44 18 0.18 120 0 0 -26 30 50 20 20 33.3 80 30 -22 -26 52 45 -26 8 57 -26 54 43 -26 6 59 0.18 121 0 0 -26 53 0 20 21 3.5 80 24 -21 -27 14 51 -26 31 10 -27 16 49 -26 29 13 0.18 122 0 0 -27 14 42 20 21 33.6 80 17 -20 -27 36 29 -26 52 55 -27 38 26 -26 50 59 0.17 123 0 0 -27 35 54 20 22 3.5 80 10 -19 -27 57 38 -27 14 12 -27 59 35 -27 12 15 0.17 124 0 0 -27 56 38 20 22 33.2 80 4 -18 -28 18 19 -27 34 59 -28 20 15 -27 33 3 0.17 125 0 0 -28 16 54 20 23 2.7 79 358 -17 -28 38 30 -27 55 18 -28 40 26 -27 53 22 0.17 126 0 0 -28 36 40 20 23 31.9 79 352 -16 -28 58 13 -28 15 8 -29 0 9 -28 13 12 0.17 127 0 0 -28 55 57 20 24 1.0 79 347 -15 -29 17 26 -28 34 28 -29 19 22 -28 32 33 0.17 128 0 0 -29 14 44 20 24 29.9 78 342 -14 -29 36 10 -28 53 19 -29 38 5 -28 51 25 0.17 129 0 0 -29 33 2 20 24 58.5 77 338 -13 -29 54 25 -29 11 41 -29 56 20 -29 9 47 0.17 130 0 0 -29 50 51 20 25 26.8 77 334 -12 -30 12 10 -29 29 33 -30 14 5 -29 27 39 0.17 131 0 0 -30 8 11 20 25 55.0 76 330 -11 -30 29 26 -29 46 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38.4 23 263 44 -33 32 38 -32 51 18 -33 34 29 -32 49 27 0.19 -167 0 0 -33 1 42 20 45 48.4 23 263 45 -33 22 25 -32 41 0 -33 24 16 -32 39 9 0.20 -166 0 0 -32 51 2 20 45 58.1 22 262 46 -33 11 48 -32 30 19 -33 13 39 -32 28 27 0.20 -165 0 0 -32 39 59 20 46 7.4 21 262 46 -33 0 46 -32 19 13 -33 2 38 -32 17 22 0.20 -164 0 0 -32 28 32 20 46 16.3 20 261 47 -32 49 21 -32 7 44 -32 51 13 -32 5 52 0.20 -163 0 0 -32 16 41 20 46 24.9 19 261 48 -32 37 33 -31 55 51 -32 39 25 -31 53 59 0.20 -162 0 0 -32 4 26 20 46 33.2 18 260 49 -32 25 20 -31 43 34 -32 27 13 -31 41 42 0.20 -161 0 0 -31 51 48 20 46 41.1 17 259 50 -32 12 45 -31 30 54 -32 14 37 -31 29 1 0.20 -160 0 0 -31 38 47 20 46 48.6 16 259 51 -31 59 46 -31 17 50 -32 1 38 -31 15 58 0.21 -159 0 0 -31 25 22 20 46 55.7 15 258 52 -31 46 23 -31 4 23 -31 48 16 -31 2 30 0.21 -158 0 0 -31 11 35 20 47 2.4 15 258 52 -31 32 38 -30 50 33 -31 34 31 -30 48 40 0.21 -157 0 0 -30 57 24 20 47 8.8 14 257 53 -31 18 30 -30 36 20 -31 20 23 -30 34 27 0.21 -156 0 0 -30 42 50 20 47 14.8 13 257 54 -31 3 58 -30 21 44 -31 5 52 -30 19 51 0.21 -155 0 0 -30 27 54 20 47 20.4 12 256 55 -30 49 5 -30 6 45 -30 50 58 -30 4 52 0.21 -154 0 0 -30 12 35 20 47 25.6 11 256 56 -30 33 48 -29 51 24 -30 35 42 -29 49 30 0.22 -153 0 0 -29 56 54 20 47 30.3 10 255 57 -30 18 10 -29 35 40 -30 20 4 -29 33 47 0.22 -152 0 0 -29 40 51 20 47 34.7 9 255 57 -30 2 9 -29 19 35 -30 4 3 -29 17 41 0.22 -151 0 0 -29 24 26 20 47 38.7 8 254 58 -29 45 46 -29 3 7 -29 47 41 -29 1 13 0.23 -150 0 0 -29 7 39 20 47 42.2 7 254 59 -29 29 2 -28 46 18 -29 30 57 -28 44 23 0.23 -149 0 0 -28 50 31 20 47 45.4 6 253 60 -29 11 56 -28 29 7 -29 13 51 -28 27 12 0.24 -148 0 0 -28 33 1 20 47 48.1 5 253 61 -28 54 29 -28 11 35 -28 56 24 -28 9 40 0.24 -147 0 0 -28 15 11 20 47 50.4 4 252 61 -28 36 41 -27 53 42 -28 38 36 -27 51 47 0.25 -146 0 0 -27 56 59 20 47 52.2 3 252 62 -28 18 31 -27 35 28 -28 20 27 -27 33 33 0.27 -145 0 0 -27 38 27 20 47 53.6 2 251 63 -28 0 2 -27 16 54 -28 1 58 -27 14 58 0.29 -144 0 0 -27 19 35 20 47 54.6 2 251 64 -27 41 12 -26 57 59 -27 43 8 -26 56 4 0.35 -143 0 0 -27 0 23 20 47 55.1 1 250 65 -27 22 2 -26 38 45 -27 23 58 -26 36 49 0.59 Uncertainty in time = +/- 10 secs Prediction of 2023 Feb 15.9 Data for the target star ------------------------ * name: TYC 6189-01147-1 * constellation : Libra * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 15 41 14.6530 DE: -17 41 17.201 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 15 41 14.6532 DE: -17 41 17.202 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.200) * V mag [mag]: 10.5 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (245) Vera asteroid class: approx. diameter [km]: 74 approx. diameter ["]: 0.031 distance from Earth [AU]: 3.24440 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#134 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", 0.001", 108.213° remarks: * orbital elements for (245)Vera : Mean anomaly = 194.0570305782 deg Arg. of pericenter = 331.7454911536 deg Long. of node = 61.0369551555 deg Inclination = 5.1789357924 deg Eccentricity = 0.1974783582 Semimajor axis = 3.0974031371 AU Perihelion dist = 2.4857330509 AU Mag: H = 7.84, G = 0.15 Epoch of elements : MJD 60010.84826389 TDT (2023 Mar 07.8483) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#1342023Feb07,18.65,2023,3,7,20.355645,-0.053715,-0.159699,2.113377,-0.702669,-0.005498,0.001198,0.000000,0.000000 125.0141,-17.7631,-122.59,-5.13,False TYC 6189-01147-1,15.68740360,-17.6881114,0.00,10.50,0.00,0.0,0,,15.70938749,-17.7630748,3.63,0.00,0,0,0 245,Vera,14.09,73.6,3.2444,0,0,0.401,-1.91,,3.8,0 0,193.9037,2023,3,7,331.7455,61.0370,5.1789,0.19748,3.09740,2.48573,7.87,5.0,0.15 1.045,0.0167,0.0014,108,0.0014,Known errors,-1.00,-1,-1,-1 20230307_1147-1,59990.86 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Feb 15, 20:45 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org