IOTA/IOTA-ES occultation update for (23) Thalia / TYC 7408-01544-1 event on 2008 Jul 10, 16:48 UT Visible from Australia, W Africa Summary ------- On 2008 Jul 10 UT, the 106 km diameter asteroid (23) Thalia will occult a 12.4 mag star in the constellation Sagittarius for observers along a path across Australia, W Africa. In the case of an occultation, the combined light of the asteroid and the star will drop by 0.4 mag to 11.5 mag (the magnitude of the asteroid) for at most 7.4 seconds. This update is based on UNSO/Flagstaff astrometry for the asteroid kindly provided by Alice Monet, TMO astrometry for the asteroid kindly provided by Bill Owen, historical astrometry from the MPC files (via AstDys), and the following catalogs for the star position: UCAC. The event at a glimpse ---------------------- * Rank: 75 * date and approx. time of event: 2008 Jul 10, 16:42 - 2008 Jul 10, 16:57 UT * magnitude of target star: 12.4 * magnitude drop [mag]: 0.4 * estimated maximum duration [s]: 7.4 * Moon: 55 % sunlit, 75° distance * Sun: 168° distance * rough path description: Australia, W Africa The occultation path -------------------- * approximate projected width [km]: 106 * 1 sigma uncertainty interval [path widths]: +/- 0.75 * 1 sigma uncertainty interval [seconds]: +/- 4.7 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .050 +/- .051) * 1 sigma uncertainty ellipse (major, minor, PA): ( .051", .050", 0° ) * approx speed of asteroid's shadow [km/s]: 14.2546 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 7408-01544-1 by 23 Thalia on 2008 Jul 10 Centre Star Star Sun Path Limits Error Limits E. Longitude Latitude U.T. Alt Az Alt Limit 1 Limit 2 Limit 3 Limit 4 o ' " o ' " h m s o o o o ' " o ' " o ' " o ' " Latitude Latitude Latitude Latitude 10 0 0 -19 35 30 16 57 2 11 120 -1 -19 1 59 -20 9 4 -18 11 44 -20 59 27 11 0 0 -20 9 8 16 57 1 12 120 -2 -19 35 42 -20 42 36 -18 45 35 -21 32 52 12 0 0 -20 42 19 16 56 59 14 119 -3 -20 8 58 -21 15 42 -19 18 59 -22 5 50 13 0 0 -21 15 2 16 56 57 15 119 -4 -20 41 46 -21 48 19 -19 51 55 -22 38 19 14 0 0 -21 47 16 16 56 54 16 118 -5 -21 14 6 -22 20 28 -20 24 24 -23 10 19 15 0 0 -22 19 1 16 56 52 17 118 -6 -21 45 57 -22 52 8 -20 56 23 -23 41 50 16 0 0 -22 50 18 16 56 50 18 118 -7 -22 17 19 -23 23 18 -21 27 54 -24 12 52 17 0 0 -23 21 4 16 56 47 19 117 -8 -22 48 11 -23 53 59 -21 58 54 -24 43 24 18 0 0 -23 51 20 16 56 44 20 117 -9 -23 18 33 -24 24 9 -22 29 26 -25 13 26 19 0 0 -24 21 7 16 56 42 21 116 -10 -23 48 25 -24 53 49 -22 59 26 -25 42 57 20 0 0 -24 50 22 16 56 39 22 116 -11 -24 17 47 -25 22 59 -23 28 57 -26 11 58 21 0 0 -25 19 7 16 56 36 23 116 -12 -24 46 38 -25 51 38 -23 57 57 -26 40 28 22 0 0 -25 47 21 16 56 32 24 115 -13 -25 14 58 -26 19 46 -24 26 26 -27 8 27 23 0 0 -26 15 4 16 56 29 25 115 -14 -25 42 46 -26 47 22 -24 54 23 -27 35 54 24 0 0 -26 42 15 16 56 26 26 114 -15 -26 10 4 -27 14 28 -25 21 50 -28 2 51 25 0 0 -27 8 55 16 56 22 27 114 -16 -26 36 50 -27 41 2 -25 48 45 -28 29 15 26 0 0 -27 35 4 16 56 19 28 113 -17 -27 3 4 -28 7 4 -26 15 8 -28 55 9 27 0 0 -28 0 40 16 56 15 29 113 -18 -27 28 47 -28 32 35 -26 41 0 -29 20 31 28 0 0 -28 25 46 16 56 12 30 112 -19 -27 53 59 -28 57 35 -27 6 21 -29 45 21 29 0 0 -28 50 20 16 56 8 31 112 -20 -28 18 38 -29 22 2 -27 31 9 -30 9 40 30 0 0 -29 14 22 16 56 4 32 111 -21 -28 42 46 -29 45 59 -27 55 26 -30 33 27 31 0 0 -29 37 52 16 56 0 33 111 -22 -29 6 23 -30 9 23 -28 19 11 -30 56 43 32 0 0 -30 0 51 16 55 56 34 110 -23 -29 29 28 -30 32 16 -28 42 25 -31 19 27 33 0 0 -30 23 19 16 55 52 34 110 -24 -29 52 1 -30 54 38 -29 5 7 -31 41 40 34 0 0 -30 45 15 16 55 48 35 109 -25 -30 14 3 -31 16 28 -29 27 17 -32 3 22 35 0 0 -31 6 40 16 55 43 36 109 -26 -30 35 33 -31 37 47 -29 48 56 -32 24 32 36 0 0 -31 27 33 16 55 39 37 108 -27 -30 56 32 -31 58 35 -30 10 4 -32 45 12 37 0 0 -31 47 56 16 55 35 38 108 -27 -31 17 0 -32 18 52 -30 30 40 -33 5 20 38 0 0 -32 7 47 16 55 30 39 107 -28 -31 36 57 -32 38 38 -30 50 45 -33 24 58 39 0 0 -32 27 7 16 55 26 40 106 -29 -31 56 23 -32 57 53 -31 10 19 -33 44 5 40 0 0 -32 45 57 16 55 22 41 106 -30 -32 15 18 -33 16 38 -31 29 22 -34 2 41 41 0 0 -33 4 16 16 55 17 42 105 -31 -32 33 43 -33 34 52 -31 47 54 -34 20 47 42 0 0 -33 22 5 16 55 12 43 105 -32 -32 51 36 -33 52 35 -32 5 56 -34 38 23 43 0 0 -33 39 23 16 55 8 43 104 -33 -33 9 0 -34 9 49 -32 23 27 -34 55 29 44 0 0 -33 56 12 16 55 3 44 103 -33 -33 25 53 -34 26 32 -32 40 27 -35 12 5 45 0 0 -34 12 30 16 54 58 45 103 -34 -33 42 16 -34 42 45 -32 56 58 -35 28 11 46 0 0 -34 28 18 16 54 54 46 102 -35 -33 58 9 -34 58 29 -33 12 58 -35 43 48 47 0 0 -34 43 37 16 54 49 47 101 -36 -34 13 33 -35 13 43 -33 28 28 -35 58 55 48 0 0 -34 58 27 16 54 44 48 101 -37 -34 28 27 -35 28 28 -33 43 29 -36 13 33 49 0 0 -35 12 47 16 54 39 48 100 -38 -34 42 51 -35 42 44 -33 58 0 -36 27 43 50 0 0 -35 26 38 16 54 34 49 100 -38 -34 56 46 -35 56 31 -34 12 1 -36 41 23 51 0 0 -35 40 0 16 54 29 50 99 -39 -35 10 12 -36 9 48 -34 25 34 -36 54 34 52 0 0 -35 52 53 16 54 24 51 98 -40 -35 23 10 -36 22 38 -34 38 37 -37 7 18 53 0 0 -36 5 18 16 54 19 52 97 -41 -35 35 38 -36 34 58 -34 51 11 -37 19 32 54 0 0 -36 17 14 16 54 14 53 97 -42 -35 47 38 -36 46 51 -35 3 17 -37 31 19 55 0 0 -36 28 42 16 54 9 53 96 -42 -35 59 9 -36 58 15 -35 14 54 -37 42 38 56 0 0 -36 39 41 16 54 4 54 95 -43 -36 10 13 -37 9 11 -35 26 2 -37 53 29 57 0 0 -36 50 13 16 53 59 55 95 -44 -36 20 48 -37 19 40 -35 36 42 -38 3 52 58 0 0 -37 0 17 16 53 54 56 94 -45 -36 30 55 -37 29 40 -35 46 54 -38 13 48 59 0 0 -37 9 53 16 53 48 56 93 -45 -36 40 34 -37 39 14 -35 56 38 -38 23 17 60 0 0 -37 19 2 16 53 43 57 92 -46 -36 49 46 -37 48 19 -36 5 55 -38 32 18 61 0 0 -37 27 44 16 53 38 58 92 -47 -36 58 30 -37 56 58 -36 14 43 -38 40 52 62 0 0 -37 35 58 16 53 33 59 91 -48 -37 6 47 -38 5 9 -36 23 4 -38 49 0 63 0 0 -37 43 45 16 53 27 60 90 -48 -37 14 37 -38 12 54 -36 30 57 -38 56 40 64 0 0 -37 51 5 16 53 22 60 89 -49 -37 21 59 -38 20 12 -36 38 23 -39 3 54 65 0 0 -37 57 58 16 53 17 61 88 -50 -37 28 55 -38 27 2 -36 45 22 -39 10 42 66 0 0 -38 4 25 16 53 11 62 87 -51 -37 35 24 -38 33 27 -36 51 54 -39 17 3 67 0 0 -38 10 24 16 53 6 63 87 -51 -37 41 25 -38 39 25 -36 57 59 -39 22 58 68 0 0 -38 15 58 16 53 0 63 86 -52 -37 47 1 -38 44 56 -37 3 37 -39 28 26 69 0 0 -38 21 5 16 52 55 64 85 -53 -37 52 9 -38 50 1 -37 8 48 -39 33 29 70 0 0 -38 25 45 16 52 49 65 84 -54 -37 56 51 -38 54 40 -37 13 33 -39 38 6 71 0 0 -38 29 59 16 52 44 66 83 -54 -38 1 7 -38 58 53 -37 17 50 -39 42 16 72 0 0 -38 33 47 16 52 38 66 82 -55 -38 4 56 -39 2 40 -37 21 42 -39 46 1 73 0 0 -38 37 9 16 52 33 67 81 -56 -38 8 19 -39 6 1 -37 25 6 -39 49 20 74 0 0 -38 40 5 16 52 27 68 80 -56 -38 11 16 -39 8 56 -37 28 5 -39 52 14 75 0 0 -38 42 35 16 52 22 69 79 -57 -38 13 47 -39 11 25 -37 30 37 -39 54 42 76 0 0 -38 44 39 16 52 16 69 78 -58 -38 15 52 -39 13 28 -37 32 42 -39 56 44 77 0 0 -38 46 17 16 52 11 70 77 -58 -38 17 30 -39 15 6 -37 34 22 -39 58 21 78 0 0 -38 47 29 16 52 5 71 75 -59 -38 18 43 -39 16 17 -37 35 35 -39 59 32 79 0 0 -38 48 16 16 51 59 72 74 -60 -38 19 29 -39 17 3 -37 36 22 -40 0 17 80 0 0 -38 48 36 16 51 54 72 73 -61 -38 19 50 -39 17 24 -37 36 43 -40 0 38 81 0 0 -38 48 31 16 51 48 73 71 -61 -38 19 45 -39 17 18 -37 36 37 -40 0 32 82 0 0 -38 48 0 16 51 42 74 70 -62 -38 19 13 -39 16 48 -37 36 6 -40 0 2 83 0 0 -38 47 3 16 51 36 74 69 -63 -38 18 16 -39 15 51 -37 35 8 -39 59 6 84 0 0 -38 45 40 16 51 31 75 67 -63 -38 16 53 -39 14 29 -37 33 44 -39 57 44 85 0 0 -38 43 51 16 51 25 76 65 -64 -38 15 4 -39 12 41 -37 31 54 -39 55 57 86 0 0 -38 41 37 16 51 19 76 63 -65 -38 12 48 -39 10 27 -37 29 37 -39 53 45 87 0 0 -38 38 57 16 51 13 77 61 -65 -38 10 7 -39 7 48 -37 26 55 -39 51 7 88 0 0 -38 35 50 16 51 7 78 59 -66 -38 7 0 -39 4 42 -37 23 46 -39 48 3 89 0 0 -38 32 18 16 51 1 78 57 -66 -38 3 26 -39 1 11 -37 20 11 -39 44 34 90 0 0 -38 28 20 16 50 55 79 54 -67 -37 59 27 -38 57 14 -37 16 9 -39 40 39 91 0 0 -38 23 56 16 50 50 80 51 -68 -37 55 1 -38 52 52 -37 11 41 -39 36 18 92 0 0 -38 19 5 16 50 44 80 48 -68 -37 50 9 -38 48 3 -37 6 47 -39 31 32 93 0 0 -38 13 48 16 50 38 81 45 -69 -37 44 50 -38 42 48 -37 1 25 -39 26 20 94 0 0 -38 8 6 16 50 32 82 41 -70 -37 39 6 -38 37 7 -36 55 38 -39 20 42 95 0 0 -38 1 56 16 50 26 82 36 -70 -37 32 54 -38 31 0 -36 49 23 -39 14 37 96 0 0 -37 55 20 16 50 20 83 31 -71 -37 26 16 -38 24 26 -36 42 42 -39 8 7 97 0 0 -37 48 18 16 50 13 83 25 -71 -37 19 12 -38 17 26 -36 35 34 -39 1 11 98 0 0 -37 40 49 16 50 7 83 18 -72 -37 11 40 -38 10 0 -36 27 59 -38 53 48 99 0 0 -37 32 54 16 50 1 84 11 -72 -37 3 42 -38 2 6 -36 19 57 -38 45 59 100 0 0 -37 24 31 16 49 55 84 2 -73 -36 55 17 -37 53 47 -36 11 27 -38 37 43 101 0 0 -37 15 41 16 49 49 84 353 -73 -36 46 24 -37 45 0 -36 2 31 -38 29 1 102 0 0 -37 6 25 16 49 43 84 344 -74 -36 37 5 -37 35 46 -35 53 7 -38 19 51 103 0 0 -36 56 41 16 49 37 84 336 -74 -36 27 18 -37 26 6 -35 43 15 -38 10 15 104 0 0 -36 46 30 16 49 30 84 327 -75 -36 17 3 -37 15 58 -35 32 56 -38 0 12 105 0 0 -36 35 51 16 49 24 83 319 -75 -36 6 21 -37 5 22 -35 22 9 -37 49 42 106 0 0 -36 24 45 16 49 18 83 312 -75 -35 55 12 -36 54 20 -35 10 54 -37 38 45 107 0 0 -36 13 11 16 49 12 83 306 -76 -35 43 34 -36 42 49 -34 59 11 -37 27 20 108 0 0 -36 1 9 16 49 5 82 301 -76 -35 31 28 -36 30 51 -34 47 0 -37 15 27 109 0 0 -35 48 39 16 48 59 81 296 -76 -35 18 55 -36 18 25 -34 34 20 -37 3 7 110 0 0 -35 35 41 16 48 52 81 292 -76 -35 5 53 -36 5 31 -34 21 12 -36 50 19 111 0 0 -35 22 15 16 48 46 80 289 -77 -34 52 22 -35 52 9 -34 7 36 -36 37 3 112 0 0 -35 8 20 16 48 40 80 285 -77 -34 38 23 -35 38 18 -33 53 30 -36 23 19 113 0 0 -34 53 56 16 48 33 79 283 -77 -34 23 55 -35 23 59 -33 38 56 -36 9 6 114 0 0 -34 39 4 16 48 27 78 280 -77 -34 8 59 -35 9 11 -33 23 53 -35 54 25 115 0 0 -34 23 43 16 48 20 77 278 -77 -33 53 33 -34 53 55 -33 8 21 -35 39 15 116 0 0 -34 7 53 16 48 14 77 276 -77 -33 37 38 -34 38 9 -32 52 19 -35 23 37 117 0 0 -33 51 34 16 48 7 76 274 -76 -33 21 14 -34 21 55 -32 35 48 -35 7 29 118 0 0 -33 34 45 16 48 1 75 272 -76 -33 4 21 -34 5 11 -32 18 47 -34 50 53 119 0 0 -33 17 27 16 47 54 74 270 -76 -32 46 58 -33 47 58 -32 1 17 -34 33 47 120 0 0 -32 59 40 16 47 48 74 269 -76 -32 29 6 -33 30 15 -31 43 17 -34 16 12 121 0 0 -32 41 22 16 47 41 73 267 -75 -32 10 43 -33 12 3 -31 24 47 -33 58 7 122 0 0 -32 22 35 16 47 35 72 266 -75 -31 51 51 -32 53 21 -31 5 47 -33 39 33 123 0 0 -32 3 18 16 47 28 71 265 -74 -31 32 29 -32 34 9 -30 46 17 -33 20 29 124 0 0 -31 43 31 16 47 21 70 263 -74 -31 12 37 -32 14 28 -30 26 17 -33 0 55 125 0 0 -31 23 14 16 47 15 69 262 -73 -30 52 14 -31 54 16 -30 5 47 -32 40 52 126 0 0 -31 2 27 16 47 8 68 261 -73 -30 31 21 -31 33 34 -29 44 46 -32 20 18 127 0 0 -30 41 9 16 47 2 68 260 -72 -30 9 58 -31 12 22 -29 23 15 -31 59 14 128 0 0 -30 19 21 16 46 55 67 259 -72 -29 48 5 -30 50 39 -29 1 13 -31 37 40 129 0 0 -29 57 3 16 46 48 66 258 -71 -29 25 41 -30 28 26 -28 38 41 -31 15 35 130 0 0 -29 34 14 16 46 42 65 257 -70 -29 2 47 -30 5 43 -28 15 38 -30 53 1 131 0 0 -29 10 55 16 46 35 64 256 -70 -28 39 22 -29 42 30 -27 52 5 -30 29 56 132 0 0 -28 47 5 16 46 29 63 256 -69 -28 15 26 -29 18 46 -27 28 1 -30 6 20 133 0 0 -28 22 45 16 46 22 62 255 -68 -27 51 1 -28 54 31 -27 3 27 -29 42 14 134 0 0 -27 57 55 16 46 15 61 254 -67 -27 26 4 -28 29 46 -26 38 22 -29 17 38 135 0 0 -27 32 34 16 46 9 60 253 -67 -27 0 38 -28 4 31 -26 12 47 -28 52 31 136 0 0 -27 6 42 16 46 2 59 253 -66 -26 34 41 -27 38 46 -25 46 41 -28 26 55 137 0 0 -26 40 21 16 45 56 58 252 -65 -26 8 14 -27 12 30 -25 20 6 -28 0 47 138 0 0 -26 13 30 16 45 49 57 251 -64 -25 41 17 -26 45 44 -24 53 0 -27 34 10 139 0 0 -25 46 8 16 45 43 56 251 -63 -25 13 50 -26 18 29 -24 25 25 -27 7 3 140 0 0 -25 18 17 16 45 36 56 250 -62 -24 45 53 -25 50 43 -23 57 19 -26 39 26 141 0 0 -24 49 56 16 45 30 55 249 -61 -24 17 26 -25 22 28 -23 28 45 -26 11 19 142 0 0 -24 21 6 16 45 23 54 249 -61 -23 48 31 -24 53 43 -22 59 41 -25 42 43 143 0 0 -23 51 47 16 45 17 53 248 -60 -23 19 6 -24 24 30 -22 30 8 -25 13 38 144 0 0 -23 21 59 16 45 11 52 248 -59 -22 49 12 -23 54 47 -22 0 6 -24 44 3 145 0 0 -22 51 42 16 45 5 50 247 -58 -22 18 50 -23 24 36 -21 29 36 -24 14 0 146 0 0 -22 20 57 16 44 58 49 247 -57 -21 48 0 -22 53 56 -20 58 38 -23 43 29 147 0 0 -21 49 45 16 44 52 48 246 -56 -21 16 42 -22 22 49 -20 27 12 -23 12 29 148 0 0 -21 18 5 16 44 46 47 246 -55 -20 44 57 -21 51 14 -19 55 19 -22 41 2 149 0 0 -20 45 58 16 44 40 46 245 -54 -20 12 45 -21 19 12 -19 22 59 -22 9 8 150 0 0 -20 13 24 16 44 34 45 245 -53 -19 40 7 -20 46 44 -18 50 13 -21 36 47 151 0 0 -19 40 25 16 44 28 44 244 -52 -19 7 2 -20 13 49 -18 17 2 -21 3 59 152 0 0 -19 7 0 16 44 22 43 244 -51 -18 33 33 -19 40 29 -17 43 25 -20 30 46 153 0 0 -18 33 10 16 44 17 42 244 -50 -17 59 38 -19 6 44 -17 9 24 -19 57 8 154 0 0 -17 58 56 16 44 11 41 243 -49 -17 25 20 -18 32 34 -16 34 59 -19 23 5 155 0 0 -17 24 18 16 44 5 40 243 -48 -16 50 38 -17 58 1 -16 0 10 -18 48 38 156 0 0 -16 49 18 16 44 0 39 242 -47 -16 15 34 -17 23 5 -15 25 0 -18 13 49 157 0 0 -16 13 56 16 43 54 38 242 -46 -15 40 7 -16 47 46 -14 49 27 -17 38 36 158 0 0 -15 38 12 16 43 49 37 242 -45 -15 4 20 -16 12 6 -14 13 34 -17 3 2 159 0 0 -15 2 8 16 43 44 35 241 -44 -14 28 12 -15 36 6 -13 37 21 -16 27 7 160 0 0 -14 25 44 16 43 39 34 241 -42 -13 51 44 -14 59 45 -13 0 48 -15 50 52 161 0 0 -13 49 1 16 43 34 33 241 -41 -13 14 59 -14 23 6 -12 23 58 -15 14 17 162 0 0 -13 12 1 16 43 29 32 241 -40 -12 37 55 -13 46 9 -11 46 50 -14 37 25 163 0 0 -12 34 44 16 43 25 31 240 -39 -12 0 35 -13 8 55 -11 9 25 -14 0 15 164 0 0 -11 57 11 16 43 20 30 240 -38 -11 23 0 -12 31 24 -10 31 46 -13 22 48 165 0 0 -11 19 23 16 43 16 29 240 -37 -10 45 9 -11 53 39 - 9 53 52 -12 45 6 166 0 0 -10 41 22 16 43 11 28 240 -36 -10 7 6 -11 15 40 - 9 15 45 -12 7 10 167 0 0 -10 3 8 16 43 7 26 239 -35 - 9 28 50 -10 37 27 - 8 37 26 -11 29 1 168 0 0 - 9 24 42 16 43 3 25 239 -34 - 8 50 22 - 9 59 4 - 7 58 56 -10 50 40 169 0 0 - 8 46 6 16 42 59 24 239 -32 - 8 11 45 - 9 20 29 - 7 20 17 -10 12 8 170 0 0 - 8 7 21 16 42 56 23 239 -31 - 7 32 59 - 8 41 45 - 6 41 28 - 9 33 26 171 0 0 - 7 28 28 16 42 52 22 239 -30 - 6 54 5 - 8 2 54 - 6 2 33 - 8 54 35 172 0 0 - 6 49 29 16 42 49 21 239 -29 - 6 15 5 - 7 23 55 - 5 23 32 - 8 15 38 173 0 0 - 6 10 24 16 42 46 19 238 -28 - 5 35 59 - 6 44 50 - 4 44 25 - 7 36 34 174 0 0 - 5 31 14 16 42 43 18 238 -27 - 4 56 49 - 6 5 41 - 4 5 15 - 6 57 25 175 0 0 - 4 52 2 16 42 40 17 238 -26 - 4 17 37 - 5 26 29 - 3 26 3 - 6 18 13 176 0 0 - 4 12 48 16 42 37 16 238 -24 - 3 38 24 - 4 47 14 - 2 46 50 - 5 38 58 177 0 0 - 3 33 34 16 42 35 15 238 -23 - 2 59 10 - 4 8 0 - 2 7 37 - 4 59 42 178 0 0 - 2 54 21 16 42 33 13 238 -22 - 2 19 58 - 3 28 46 - 1 28 26 - 4 20 27 179 0 0 - 2 15 10 16 42 31 12 238 -21 - 1 40 48 - 2 49 34 - 0 49 18 - 3 41 13 180 0 0 - 1 36 3 16 42 29 11 238 -20 - 1 1 42 - 2 10 25 - 0 10 14 - 3 2 3 -179 0 0 - 0 57 0 16 42 27 10 238 -19 - 0 22 41 - 1 31 21 0 28 45 - 2 22 56 -178 0 0 - 0 18 4 16 42 26 9 238 -17 0 16 13 - 0 52 23 1 7 36 - 1 43 55 -177 0 0 0 20 45 16 42 24 8 238 -16 0 55 0 - 0 13 32 1 46 20 - 1 5 1 -176 0 0 0 59 25 16 42 23 6 238 -15 1 33 38 0 25 11 2 24 54 - 0 26 15 -175 0 0 1 37 55 16 42 22 5 238 -14 2 12 5 1 3 43 3 3 18 0 12 21 -174 0 0 2 16 14 16 42 21 4 238 -13 2 50 22 1 42 5 3 41 30 0 50 47 -173 0 0 2 54 21 16 42 21 3 238 -12 3 28 25 2 20 14 4 19 28 1 29 1 -172 0 0 3 32 13 16 42 21 2 238 -10 4 6 14 2 58 10 4 57 13 2 7 2 -171 0 0 4 9 51 16 42 20 0 238 -9 4 43 49 3 35 52 .. .. .. 2 44 49 Uncertainty in time = +/- 6 secs [Prediction of 2008 Jul 3.0] Data for the target star ------------------------ * name: TYC 7408-01544-1 * constellation : Sagittarius * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 18 46 15.2002 DE: -31 44 14.859 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .048, .049 ) * V mag [mag]: 12.4 * B mag [mag]: 12.2 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (23) Thalia approx. diameter [km]: 106 approx. diameter ["]: .068 distance from Earth [AU]: 2.16100 * orbital information: orbit source: Preston date of fit: 2008 Jul 02 source of used astrometry: FASTT TMO MPC (via Astdys) number of used observations: 1116 number of rejected observations: 121 time covered by the observations: 1909 Mar 24 - 2008 Jun 24 1 sigma uncertainty ellipse (major, minor, PA): 0.014, 0.013, 94° remarks: * orbital elements for (23) Thalia : Mean anomaly = 143.49397397 deg Arg. of pericenter = 59.73799121 deg Long. of node = 67.20049271 deg Inclination = 10.13182315 deg Eccentricity = 0.23276183 Semimajor axis = 2.63077986 AU Perihelion dist = 2.01843473 AU Mag: H = 7.00, G = 0.15 Epoch of elements : MJD 54657.70100000 TDT (2008 Jul 10.701) ------ occelmnt file for Occult BEGIN ----------------------------------- 2008 Jul 10 23 Thalia 16h 49.8m UT 12.4 18 46 15.200-31 44 14.86TYC 7408-01544-1 12.2 11.5 106 7.4 2.161 -2.523 -5.98 100.1405 -31.736 -71.07 22.12 16.8294 0.01695 -0.09183 -7.91018 -1.47060 0.00082 0.00091 2000 141.7151852008 7 3.00000 59.737991 67.200493 10.1318230.23276183 2.6307799 2.0184347 7.0 5.00.15 RATE 2.3098160 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.051 0.050 0 1.75 0.050 0 54650.5020080710_1544-1 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2008 Jul 03, 00:51 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org