IOTA/IOTA-ES occultation update for (511) Davida / TYC 6932-00582-1 event on 2023 Nov 20, 11:27 UT Visible from China Summary ------- On 2023 Nov 20 UT, the 287.2 km diameter asteroid (511) Davida will occult a 9.4 mag star in the constellation Capricornus 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 3.21 mag to 12.59 mag (the magnitude of the asteroid) for at most 13.050 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 Nov 20, 11:24 - 2023 Nov 20, 11:30 * geocentric midpoint of event [JD]: 2460268.97736250 * magnitude of target star: 9.44 * magnitude drop [mag]: 3.21 * estimated maximum duration [s]: 13.050 * Moon: 51 % sunlit, 17° distance * Sun: 75° distance * rough path description: China The occultation path -------------------- * approximate projected width [km]: 452 * 1 sigma uncertainty interval [path widths]: +/- 0.02 * 1 sigma uncertainty interval [seconds]: +/- 0.5 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.004, +/- 0.001) * 1 sigma uncertainty ellipse (major, minor, PA): (0.004", 0.001", 90°) * approx speed of asteroid's shadow [km/s]: 22.0109 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 6932-00582-1 by 511 Davida on 2023 Nov 20 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 0 0 0 .. .. .... .. .. .. .. .. .. 24 22 7 .. .. .. 24 17 32 .. .. .. .... 13 0 0 26 8 25 11 24 19.5 0 121 44 23 51 19 .. .. .. 23 46 45 .. .. .. .... 14 0 0 25 37 25 11 24 19.6 1 121 44 23 21 21 28 1 23 23 16 49 28 6 28 -0.61 15 0 0 25 7 19 11 24 19.9 3 121 44 22 52 14 27 30 7 22 47 44 27 35 9 -0.86 16 0 0 24 38 6 11 24 20.3 4 122 45 22 23 58 26 59 46 22 19 30 27 4 46 -0.96 17 0 0 24 9 47 11 24 20.9 5 122 45 21 56 35 26 30 22 21 52 8 26 35 19 -1.02 18 0 0 23 42 22 11 24 21.6 6 123 45 21 30 3 26 1 55 21 25 38 26 6 50 -1.05 19 0 0 23 15 51 11 24 22.4 7 123 45 21 4 23 25 34 24 21 0 0 25 39 17 -1.08 20 0 0 22 50 14 11 24 23.4 8 123 45 20 39 35 25 7 50 20 35 14 25 12 41 -1.10 21 0 0 22 25 32 11 24 24.6 9 124 45 20 15 40 24 42 13 20 11 20 24 47 1 -1.11 22 0 0 22 1 44 11 24 25.8 10 124 45 19 52 36 24 17 32 19 48 18 24 22 19 -1.12 23 0 0 21 38 50 11 24 27.2 11 125 45 19 30 25 23 53 49 19 26 8 23 58 33 -1.13 24 0 0 21 16 51 11 24 28.7 12 125 45 19 9 7 23 31 2 19 4 51 23 35 45 -1.14 25 0 0 20 55 46 11 24 30.4 13 126 45 18 48 41 23 9 11 18 44 26 23 13 53 -1.15 26 0 0 20 35 35 11 24 32.2 13 126 45 18 29 8 22 48 18 18 24 54 22 52 58 -1.15 27 0 0 20 16 19 11 24 34.1 14 126 45 18 10 27 22 28 21 18 6 15 22 32 59 -1.16 28 0 0 19 57 58 11 24 36.1 15 127 45 17 52 39 22 9 21 17 48 28 22 13 58 -1.16 29 0 0 19 40 31 11 24 38.3 16 127 44 17 35 44 21 51 18 17 31 34 21 55 53 -1.16 30 0 0 19 23 59 11 24 40.5 17 128 44 17 19 41 21 34 11 17 15 32 21 38 45 -1.17 31 0 0 19 8 21 11 24 42.9 18 128 44 17 4 32 21 18 1 17 0 23 21 22 34 -1.17 32 0 0 18 53 37 11 24 45.4 19 129 43 16 50 14 21 2 48 16 46 7 21 7 19 -1.17 33 0 0 18 39 48 11 24 48.0 20 129 43 16 36 50 20 48 31 16 32 43 20 53 1 -1.18 34 0 0 18 26 54 11 24 50.8 21 130 43 16 24 18 20 35 10 16 20 12 20 39 40 -1.18 35 0 0 18 14 54 11 24 53.6 22 130 42 16 12 39 20 22 46 16 8 34 20 27 15 -1.18 36 0 0 18 3 48 11 24 56.5 23 131 42 16 1 53 20 11 18 15 57 48 20 15 46 -1.18 37 0 0 17 53 37 11 24 59.5 23 131 41 15 51 59 20 0 46 15 47 55 20 5 14 -1.19 38 0 0 17 44 20 11 25 2.7 24 132 41 15 42 58 19 51 11 15 38 54 19 55 38 -1.19 39 0 0 17 35 57 11 25 5.9 25 132 40 15 34 49 19 42 32 15 30 46 19 46 58 -1.19 40 0 0 17 28 29 11 25 9.2 26 133 40 15 27 34 19 34 49 15 23 31 19 39 15 -1.19 41 0 0 17 21 55 11 25 12.7 27 133 39 15 21 11 19 28 3 15 17 8 19 32 28 -1.19 42 0 0 17 16 15 11 25 16.2 27 134 38 15 15 41 19 22 13 15 11 38 19 26 37 -1.20 43 0 0 17 11 30 11 25 19.8 28 135 38 15 11 3 19 17 19 15 7 1 19 21 43 -1.20 44 0 0 17 7 39 11 25 23.4 29 135 37 15 7 18 19 13 21 15 3 16 19 17 45 -1.20 45 0 0 17 4 43 11 25 27.2 30 136 36 15 4 26 19 10 20 15 0 24 19 14 44 -1.20 46 0 0 17 2 41 11 25 31.1 30 137 36 15 2 27 19 8 15 14 58 25 19 12 39 -1.20 47 0 0 17 1 33 11 25 35.0 31 137 35 15 1 20 19 7 7 14 57 19 19 11 30 -1.20 48 0 0 17 1 21 11 25 39.0 32 138 34 15 1 7 19 6 54 14 57 5 19 11 18 -1.20 49 0 0 17 2 2 11 25 43.1 32 139 33 15 1 46 19 7 39 14 57 45 19 12 3 -1.20 50 0 0 17 3 38 11 25 47.3 33 140 33 15 3 19 19 9 19 14 59 17 19 13 43 -1.21 51 0 0 17 6 9 11 25 51.5 33 140 32 15 5 44 19 11 57 15 1 42 19 16 21 -1.21 52 0 0 17 9 35 11 25 55.8 34 141 31 15 9 3 19 15 30 15 5 0 19 19 55 -1.21 53 0 0 17 13 55 11 26 0.2 35 142 30 15 13 14 19 20 1 15 9 12 19 24 26 -1.21 54 0 0 17 19 11 11 26 4.6 35 143 29 15 18 19 19 25 28 15 14 16 19 29 54 -1.21 55 0 0 17 25 21 11 26 9.1 36 144 28 15 24 17 19 31 53 15 20 14 19 36 19 -1.21 56 0 0 17 32 27 11 26 13.7 36 145 28 15 31 9 19 39 14 15 27 5 19 43 41 -1.21 57 0 0 17 40 28 11 26 18.3 36 146 27 15 38 54 19 47 33 15 34 50 19 52 0 -1.21 58 0 0 17 49 24 11 26 23.0 37 147 26 15 47 33 19 56 48 15 43 28 20 1 16 -1.21 59 0 0 17 59 15 11 26 27.7 37 148 25 15 57 5 20 7 2 15 53 0 20 11 30 -1.21 60 0 0 18 10 2 11 26 32.5 38 149 24 16 7 32 20 18 13 16 3 26 20 22 42 -1.21 61 0 0 18 21 45 11 26 37.3 38 150 23 16 18 52 20 30 21 16 14 45 20 34 52 -1.21 62 0 0 18 34 24 11 26 42.2 38 151 22 16 31 6 20 43 28 16 26 58 20 47 59 -1.21 63 0 0 18 47 58 11 26 47.1 39 152 21 16 44 14 20 57 32 16 40 6 21 2 5 -1.21 64 0 0 19 2 28 11 26 52.0 39 153 20 16 58 16 21 12 35 16 54 7 21 17 9 -1.21 65 0 0 19 17 55 11 26 57.0 39 154 19 17 13 13 21 28 36 17 9 3 21 33 11 -1.21 66 0 0 19 34 17 11 27 2.0 39 155 18 17 29 4 21 45 35 17 24 53 21 50 11 -1.21 67 0 0 19 51 37 11 27 7.1 39 156 17 17 45 49 22 3 33 17 41 37 22 8 11 -1.22 68 0 0 20 9 52 11 27 12.1 39 158 16 18 3 29 22 22 29 17 59 16 22 27 9 -1.22 69 0 0 20 29 4 11 27 17.2 39 159 15 18 22 4 22 42 25 18 17 49 22 47 6 -1.22 70 0 0 20 49 13 11 27 22.4 39 160 14 18 41 33 23 3 19 18 37 17 23 8 2 -1.22 71 0 0 21 10 19 11 27 27.5 39 161 13 19 1 57 23 25 13 18 57 40 23 29 58 -1.22 72 0 0 21 32 21 11 27 32.7 39 162 12 19 23 16 23 48 6 19 18 58 23 52 52 -1.22 73 0 0 21 55 21 11 27 37.8 39 164 11 19 45 30 24 11 58 19 41 10 24 16 47 -1.22 74 0 0 22 19 17 11 27 43.0 39 165 10 20 8 39 24 36 50 20 4 17 24 41 41 -1.22 75 0 0 22 44 10 11 27 48.2 39 166 9 20 32 42 25 2 42 20 28 19 25 7 35 -1.22 76 0 0 23 10 1 11 27 53.3 39 167 8 20 57 40 25 29 33 20 53 16 25 34 28 -1.22 77 0 0 23 36 48 11 27 58.5 39 168 7 21 23 34 25 57 24 21 19 7 26 2 21 -1.22 78 0 0 24 4 32 11 28 3.7 38 170 6 21 50 21 26 26 15 21 45 53 26 31 15 -1.22 79 0 0 24 33 14 11 28 8.8 38 171 5 22 18 4 26 56 5 22 13 34 27 1 8 -1.22 80 0 0 25 2 52 11 28 13.9 38 172 4 22 46 41 27 26 56 22 42 9 27 32 1 -1.22 81 0 0 25 33 27 11 28 19.0 37 173 3 23 16 13 27 58 45 23 11 39 28 3 53 -1.22 82 0 0 26 4 58 11 28 24.1 37 174 2 23 46 38 28 31 34 23 42 2 28 36 45 -1.22 83 0 0 26 37 26 11 28 29.1 36 176 1 24 17 58 29 5 21 24 13 20 29 10 35 -1.22 84 0 0 27 10 49 11 28 34.1 36 177 0 24 50 11 29 40 9 24 45 31 29 45 26 -1.22 85 0 0 27 45 8 11 28 39.1 35 178 -1 25 23 18 30 15 57 25 18 35 30 21 17 -1.22 86 0 0 28 20 22 11 28 44.0 35 179 -2 25 57 17 30 52 43 25 52 32 30 58 6 -1.22 87 0 0 28 56 32 11 28 48.9 34 180 -3 26 32 9 31 30 27 26 27 22 31 35 54 -1.22 88 0 0 29 33 37 11 28 53.7 34 181 -4 27 7 53 32 9 10 27 3 3 32 14 41 -1.22 89 0 0 30 11 36 11 28 58.4 33 182 -5 27 44 28 32 48 50 27 39 35 32 54 25 -1.22 90 0 0 30 50 29 11 29 3.1 32 183 -7 28 21 54 33 29 27 28 16 59 33 35 6 -1.22 91 0 0 31 30 14 11 29 7.7 32 184 -8 29 0 11 34 11 2 28 55 13 34 16 45 -1.22 92 0 0 32 10 52 11 29 12.2 31 185 -9 29 39 18 34 53 32 29 34 17 34 59 19 -1.22 93 0 0 32 52 20 11 29 16.6 30 186 -10 30 19 13 35 36 57 30 14 9 35 42 49 -1.22 94 0 0 33 34 40 11 29 21.0 29 187 -11 30 59 56 36 21 18 30 54 49 36 27 15 -1.22 95 0 0 34 17 49 11 29 25.2 28 188 -12 31 41 25 37 6 32 31 36 15 37 12 33 -1.22 96 0 0 35 1 47 11 29 29.4 28 189 -13 32 23 41 37 52 37 32 18 28 37 58 44 -1.22 97 0 0 35 46 31 11 29 33.4 27 190 -14 33 6 40 38 39 35 33 1 24 38 45 47 -1.22 98 0 0 36 32 2 11 29 37.3 26 191 -15 33 50 24 39 27 23 33 45 4 39 33 41 -1.22 99 0 0 37 18 18 11 29 41.1 25 192 -16 34 34 49 40 16 1 34 29 26 40 22 24 -1.22 100 0 0 38 5 16 11 29 44.8 24 193 -17 35 19 55 41 5 26 35 14 28 41 11 54 -1.22 101 0 0 38 52 57 11 29 48.3 23 194 -17 36 5 39 41 55 36 36 0 10 42 2 11 -1.22 102 0 0 39 41 18 11 29 51.7 22 195 -18 36 52 1 42 46 31 36 46 28 42 53 12 -1.22 103 0 0 40 30 16 11 29 55.0 21 196 -19 37 38 59 43 38 9 37 33 22 43 44 56 -1.22 104 0 0 41 19 50 11 29 58.1 20 196 -20 38 26 30 44 30 28 38 20 50 44 37 22 -1.22 105 0 0 42 9 59 11 30 1.1 19 197 -21 39 14 33 45 23 25 39 8 49 45 30 25 -1.22 106 0 0 43 0 39 11 30 3.9 18 198 -22 40 3 6 46 16 58 39 57 17 46 24 6 -1.22 107 0 0 43 51 49 11 30 6.6 17 199 -23 40 52 5 47 11 5 40 46 13 47 18 20 -1.22 108 0 0 44 43 25 11 30 9.1 16 200 -24 41 41 30 48 5 44 41 35 34 48 13 6 -1.23 109 0 0 45 35 26 11 30 11.4 15 201 -24 42 31 17 49 0 51 42 25 17 49 8 21 -1.23 110 0 0 46 27 49 11 30 13.6 14 201 -25 43 21 24 49 56 24 43 15 20 50 4 2 -1.23 111 0 0 47 20 30 11 30 15.6 13 202 -26 44 11 49 50 52 19 44 5 41 51 0 6 -1.23 112 0 0 48 13 27 11 30 17.5 12 203 -26 45 2 28 51 48 34 44 56 16 51 56 29 -1.23 113 0 0 49 6 37 11 30 19.1 10 204 -27 45 53 19 52 45 4 45 47 3 52 53 7 -1.24 114 0 0 49 59 55 11 30 20.6 9 205 -28 46 44 18 53 41 47 46 37 58 53 49 59 -1.24 115 0 0 50 53 20 11 30 22.0 8 205 -28 47 35 24 54 38 37 47 29 0 54 46 58 -1.25 116 0 0 51 46 46 11 30 23.1 7 206 -29 48 26 31 55 35 32 48 20 3 55 44 2 -1.25 117 0 0 52 40 11 11 30 24.1 6 207 -29 49 17 38 56 32 26 49 11 6 56 41 6 -1.26 118 0 0 53 33 31 11 30 24.9 5 208 -30 50 8 41 57 29 16 50 2 6 57 38 5 -1.27 119 0 0 54 26 42 11 30 25.6 4 209 -30 50 59 37 58 25 58 50 52 57 58 34 56 -1.29 120 0 0 55 19 40 11 30 26.1 3 210 -31 51 50 22 .. .. .. 51 43 39 .. .. .. -1.32 121 0 0 56 12 21 11 30 26.4 2 210 -31 52 40 53 .. .. .. 52 34 6 .. .. .. -1.38 122 0 0 57 4 40 11 30 26.6 1 211 -32 53 31 6 .. .. .. 53 24 16 .. .. .. -1.56 0 0 0 .. .. .... .. .. .. .. .. .. 54 20 59 .. .. .. 54 14 5 .. .. .. .... 0 0 0 .. .. .... .. .. .. .. .. .. 55 10 27 .. .. .. 55 3 30 .. .. .. .... 0 0 0 .. .. .... .. .. .. .. .. .. 55 59 27 .. .. .. 55 52 27 .. .. .. .... 0 0 0 .. .. .... .. .. .. .. .. .. .. .. .. .. .. .. 56 40 54 .. .. .. .... Uncertainty in time = +/- 0 secs Prediction of 2023 Oct 15.9 Data for the target star ------------------------ * name: TYC 6932-00582-1 * constellation : Capricornus * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 21 12 06.6484 DE: -27 04 43.759 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 21 12 06.6479 DE: -27 04 43.761 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 9.4 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (511) Davida asteroid class: ShapeModel approx. diameter [km]: 287 approx. diameter ["]: 0.116 distance from Earth [AU]: 3.41870 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#113 date of fit: 2023 Oct 12 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): 0.004", 0.001", 90.144° remarks: * orbital elements for (511)Davida : Mean anomaly = 266.6830801456 deg Arg. of pericenter = 337.1052771288 deg Long. of node = 107.5823714664 deg Inclination = 15.9438317696 deg Eccentricity = 0.1890273987 Semimajor axis = 3.1612125279 AU Perihelion dist = 2.5636567472 AU Mag: H = 6.42, G = 0.16 Epoch of elements : MJD 60268.47736111 TDT (2023 Nov 20.4774) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#1132023Oct12,13.05,2023,11,20,11.456700,-0.272553,0.721974,11.610234,4.421248,0.005601,0.001473,0.000000,0.000000 87.3017,-26.9833,4.54,-19.69,False TYC 6932-00582-1,21.20184680,-27.0788218,0.00,9.44,0.00,0.0,0,,21.22508099,-26.9832704,3.21,0.00,0,0,0 511,Davida,12.59,287.200,3.4187,0,0,2.235,11.37,,14.4,0 0,266.5994,2023,11,20,337.1053,107.5824,15.9438,0.18903,3.16121,2.56366,6.43,5.0,0.15 1.017,0.0043,0.0013,90,0.0045,Known errors,-1.00,0,-1,-1 20231120_0582-1,60232.88 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Oct 15, 21:06 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org