IOTA/IOTA-ES occultation update for (1056) Azalea / TYC 0052-00852-1 event on 2012 Nov 11, 14:29 UT Visible from New Zealand Summary ------- On 2012 Nov 11 UT, the 13 km diameter asteroid (1056) Azalea will occult a 10.4 mag star in the constellation Cetus for observers along a path across New Zealand. In the case of an occultation, the combined light of the asteroid and the star will drop by 3.7 mag to 14.1 mag (the magnitude of the asteroid) for at most 1.5 seconds. This update is based on UNSO/Flagstaff astrometry for the asteroid kindly provided by Alice Monet, historical astrometry from the MPC files (via AstDys), and the following catalogs for the star position: UCAC. The event at a glimpse ---------------------- * Rank: 32 * date and approx. time of event: 2012 Nov 11, 14:21 - 2012 Nov 11, 14:36 UT * geocentric midpoint of event [JD]: 2456243.10359583 * magnitude of target star: 10.4 * magnitude drop [mag]: 3.7 * estimated maximum duration [s]: 1.5 * Moon: 8 % sunlit, 157° distance * Sun: 165° distance * rough path description: New Zealand The occultation path -------------------- * approximate projected width [km]: 20 * 1 sigma uncertainty interval [path widths]: +/- 2.09 * 1 sigma uncertainty interval [seconds]: +/- 4.0 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .041 +/- .032) * 1 sigma uncertainty ellipse (major, minor, PA): ( .042", .031", 77° ) * approx speed of asteroid's shadow [km/s]: 8.7939 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 0052-00852-1 by 1056 Azalea on 2012 Nov 11 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 73 0 0 -53 24 19 14 36 7 15 57 0 -53 18 35 -53 30 3 -52 54 46 -53 54 10 74 0 0 -53 16 8 14 36 3 16 57 -1 -53 10 24 -53 21 52 -52 46 35 -53 46 0 75 0 0 -53 7 53 14 36 0 16 56 -2 -53 2 10 -53 13 38 -52 38 21 -53 37 46 76 0 0 -52 59 36 14 35 56 17 55 -2 -52 53 53 -53 5 21 -52 30 3 -53 29 29 77 0 0 -52 51 17 14 35 53 18 54 -3 -52 45 33 -52 57 1 -52 21 43 -53 21 9 78 0 0 -52 42 54 14 35 49 18 53 -3 -52 37 10 -52 48 39 -52 13 21 -53 12 47 79 0 0 -52 34 29 14 35 45 19 52 -4 -52 28 46 -52 40 14 -52 4 56 -53 4 22 80 0 0 -52 26 2 14 35 41 19 51 -4 -52 20 18 -52 31 47 -51 56 29 -52 55 55 81 0 0 -52 17 33 14 35 37 20 51 -5 -52 11 49 -52 23 18 -51 47 59 -52 47 26 82 0 0 -52 9 2 14 35 33 20 50 -6 -52 3 18 -52 14 46 -51 39 28 -52 38 55 83 0 0 -52 0 28 14 35 28 21 49 -6 -51 54 44 -52 6 13 -51 30 55 -52 30 21 84 0 0 -51 51 53 14 35 24 21 48 -7 -51 46 10 -51 57 38 -51 22 20 -52 21 46 85 0 0 -51 43 17 14 35 19 22 47 -7 -51 37 33 -51 49 2 -51 13 43 -52 13 10 86 0 0 -51 34 39 14 35 14 23 46 -8 -51 28 55 -51 40 24 -51 5 6 -52 4 32 87 0 0 -51 26 0 14 35 9 23 45 -8 -51 20 16 -51 31 44 -50 56 27 -51 55 53 88 0 0 -51 17 20 14 35 4 24 44 -9 -51 11 36 -51 23 4 -50 47 47 -51 47 12 89 0 0 -51 8 39 14 34 59 24 43 -9 -51 2 55 -51 14 23 -50 39 6 -51 38 31 90 0 0 -50 59 57 14 34 54 25 43 -10 -50 54 13 -51 5 41 -50 30 24 -51 29 49 91 0 0 -50 51 14 14 34 49 25 42 -11 -50 45 31 -50 56 59 -50 21 42 -51 21 6 92 0 0 -50 42 31 14 34 43 26 41 -11 -50 36 48 -50 48 16 -50 12 59 -51 12 23 93 0 0 -50 33 48 14 34 38 26 40 -12 -50 28 5 -50 39 32 -50 4 17 -51 3 39 94 0 0 -50 25 5 14 34 32 27 39 -12 -50 19 22 -50 30 49 -49 55 34 -50 54 56 95 0 0 -50 16 22 14 34 26 27 38 -13 -50 10 39 -50 22 6 -49 46 51 -50 46 12 96 0 0 -50 7 39 14 34 20 28 37 -13 -50 1 56 -50 13 23 -49 38 9 -50 37 29 97 0 0 -49 58 57 14 34 14 28 36 -14 -49 53 13 -50 4 40 -49 29 27 -50 28 46 98 0 0 -49 50 15 14 34 8 29 35 -14 -49 44 32 -49 55 59 -49 20 45 -50 20 4 99 0 0 -49 41 34 14 34 2 29 34 -15 -49 35 51 -49 47 17 -49 12 5 -50 11 22 100 0 0 -49 32 53 14 33 55 30 33 -15 -49 27 11 -49 38 37 -49 3 25 -50 2 41 101 0 0 -49 24 14 14 33 49 30 32 -16 -49 18 32 -49 29 58 -48 54 46 -49 54 2 102 0 0 -49 15 37 14 33 42 31 31 -16 -49 9 54 -49 21 20 -48 46 9 -49 45 23 103 0 0 -49 7 0 14 33 36 31 30 -17 -49 1 18 -49 12 44 -48 37 33 -49 36 46 104 0 0 -48 58 26 14 33 29 31 29 -17 -48 52 43 -49 4 9 -48 28 59 -49 28 11 105 0 0 -48 49 53 14 33 22 32 28 -18 -48 44 10 -48 55 36 -48 20 27 -49 19 37 106 0 0 -48 41 22 14 33 15 32 27 -18 -48 35 39 -48 47 5 -48 11 57 -49 11 6 107 0 0 -48 32 53 14 33 8 33 26 -19 -48 27 11 -48 38 36 -48 3 29 -49 2 36 108 0 0 -48 24 26 14 33 1 33 25 -19 -48 18 44 -48 30 9 -47 55 3 -48 54 9 109 0 0 -48 16 2 14 32 53 34 24 -19 -48 10 20 -48 21 45 -47 46 39 -48 45 44 110 0 0 -48 7 41 14 32 46 34 22 -20 -48 1 59 -48 13 23 -47 38 19 -48 37 22 111 0 0 -47 59 22 14 32 39 34 21 -20 -47 53 41 -48 5 4 -47 30 1 -48 29 2 112 0 0 -47 51 6 14 32 31 35 20 -21 -47 45 25 -47 56 49 -47 21 46 -48 20 46 113 0 0 -47 42 54 14 32 23 35 19 -21 -47 37 13 -47 48 36 -47 13 34 -48 12 33 114 0 0 -47 34 45 14 32 16 35 18 -21 -47 29 4 -47 40 27 -47 5 26 -48 4 23 115 0 0 -47 26 39 14 32 8 36 17 -22 -47 20 58 -47 32 21 -46 57 21 -47 56 16 116 0 0 -47 18 37 14 32 0 36 16 -22 -47 12 56 -47 24 19 -46 49 20 -47 48 13 117 0 0 -47 10 39 14 31 52 36 15 -23 -47 4 58 -47 16 20 -46 41 23 -47 40 14 118 0 0 -47 2 45 14 31 44 37 13 -23 -46 57 4 -47 8 26 -46 33 29 -47 32 19 119 0 0 -46 54 55 14 31 36 37 12 -23 -46 49 14 -47 0 36 -46 25 40 -47 24 28 120 0 0 -46 47 9 14 31 28 37 11 -24 -46 41 29 -46 52 50 -46 17 55 -47 16 41 121 0 0 -46 39 27 14 31 20 37 10 -24 -46 33 48 -46 45 8 -46 10 15 -47 8 59 122 0 0 -46 31 51 14 31 12 38 9 -24 -46 26 11 -46 37 31 -46 2 39 -47 1 22 123 0 0 -46 24 19 14 31 3 38 8 -25 -46 18 39 -46 29 59 -45 55 8 -46 53 49 124 0 0 -46 16 52 14 30 55 38 6 -25 -46 11 13 -46 22 32 -45 47 42 -46 46 21 125 0 0 -46 9 30 14 30 47 38 5 -25 -46 3 51 -46 15 10 -45 40 21 -46 38 58 126 0 0 -46 2 13 14 30 38 38 4 -25 -45 56 34 -46 7 53 -45 33 5 -46 31 40 127 0 0 -45 55 2 14 30 30 38 3 -26 -45 49 23 -46 0 42 -45 25 54 -46 24 28 128 0 0 -45 47 56 14 30 21 39 1 -26 -45 42 18 -45 53 36 -45 18 50 -46 17 22 129 0 0 -45 40 56 14 30 13 39 0 -26 -45 35 18 -45 46 35 -45 11 50 -46 10 21 130 0 0 -45 34 2 14 30 4 39 359 -26 -45 28 24 -45 39 41 -45 4 57 -46 3 25 131 0 0 -45 27 14 14 29 55 39 358 -27 -45 21 36 -45 32 53 -44 58 10 -45 56 36 132 0 0 -45 20 32 14 29 47 39 357 -27 -45 14 54 -45 26 10 -44 51 29 -45 49 53 133 0 0 -45 13 56 14 29 38 39 355 -27 -45 8 18 -45 19 34 -44 44 54 -45 43 17 134 0 0 -45 7 27 14 29 29 39 354 -27 -45 1 49 -45 13 5 -44 38 25 -45 36 46 135 0 0 -45 1 4 14 29 21 39 353 -27 -44 55 26 -45 6 42 -44 32 3 -45 30 23 136 0 0 -44 54 47 14 29 12 39 352 -28 -44 49 10 -45 0 25 -44 25 48 -45 24 6 137 0 0 -44 48 38 14 29 3 39 350 -28 -44 43 1 -44 54 16 -44 19 39 -45 17 55 138 0 0 -44 42 36 14 28 54 39 349 -28 -44 36 59 -44 48 13 -44 13 38 -45 11 52 139 0 0 -44 36 40 14 28 45 39 348 -28 -44 31 3 -44 42 18 -44 7 43 -45 5 56 140 0 0 -44 30 52 14 28 37 39 347 -28 -44 25 15 -44 36 29 -44 1 56 -45 0 7 141 0 0 -44 25 11 14 28 28 39 345 -28 -44 19 35 -44 30 48 -43 56 15 -44 54 25 142 0 0 -44 19 38 14 28 19 39 344 -28 -44 14 1 -44 25 15 -43 50 43 -44 48 51 143 0 0 -44 14 12 14 28 10 39 343 -28 -44 8 36 -44 19 49 -43 45 18 -44 43 24 144 0 0 -44 8 54 14 28 2 39 342 -28 -44 3 18 -44 14 30 -43 40 0 -44 38 5 145 0 0 -44 3 43 14 27 53 39 340 -28 -43 58 7 -44 9 20 -43 34 51 -44 32 54 146 0 0 -43 58 41 14 27 44 38 339 -28 -43 53 5 -44 4 17 -43 29 49 -44 27 51 147 0 0 -43 53 46 14 27 36 38 338 -28 -43 48 11 -43 59 23 -43 24 55 -44 22 56 148 0 0 -43 49 0 14 27 27 38 337 -28 -43 43 24 -43 54 36 -43 20 9 -44 18 9 149 0 0 -43 44 22 14 27 18 38 336 -28 -43 38 46 -43 49 58 -43 15 32 -44 13 30 150 0 0 -43 39 52 14 27 10 38 334 -28 -43 34 17 -43 45 28 -43 11 3 -44 8 59 151 0 0 -43 35 31 14 27 1 37 333 -28 -43 29 56 -43 41 6 -43 6 42 -44 4 37 152 0 0 -43 31 18 14 26 53 37 332 -28 -43 25 43 -43 36 54 -43 2 30 -44 0 24 153 0 0 -43 27 14 14 26 44 37 331 -28 -43 21 39 -43 32 49 -42 58 26 -43 56 19 154 0 0 -43 23 18 14 26 36 36 330 -28 -43 17 43 -43 28 54 -42 54 31 -43 52 23 155 0 0 -43 19 31 14 26 27 36 329 -28 -43 13 57 -43 25 7 -42 50 45 -43 48 36 156 0 0 -43 15 54 14 26 19 36 328 -27 -43 10 19 -43 21 29 -42 47 8 -43 44 58 157 0 0 -43 12 25 14 26 11 36 326 -27 -43 6 50 -43 18 0 -42 43 39 -43 41 28 158 0 0 -43 9 5 14 26 3 35 325 -27 -43 3 31 -43 14 40 -42 40 20 -43 38 8 159 0 0 -43 5 55 14 25 54 35 324 -27 -43 0 20 -43 11 30 -42 37 10 -43 34 57 160 0 0 -43 2 53 14 25 46 34 323 -27 -42 57 19 -43 8 28 -42 34 9 -43 31 55 161 0 0 -43 0 1 14 25 38 34 322 -26 -42 54 27 -43 5 36 -42 31 17 -43 29 3 162 0 0 -42 57 18 14 25 30 34 321 -26 -42 51 44 -43 2 53 -42 28 35 -43 26 20 163 0 0 -42 54 45 14 25 23 33 320 -26 -42 49 11 -43 0 20 -42 26 2 -43 23 46 164 0 0 -42 52 21 14 25 15 33 319 -26 -42 46 47 -42 57 56 -42 23 38 -43 21 22 165 0 0 -42 50 7 14 25 7 32 318 -25 -42 44 33 -42 55 42 -42 21 24 -43 19 8 166 0 0 -42 48 2 14 25 0 32 317 -25 -42 42 28 -42 53 37 -42 19 20 -43 17 3 167 0 0 -42 46 7 14 24 52 31 316 -25 -42 40 34 -42 51 42 -42 17 25 -43 15 8 168 0 0 -42 44 22 14 24 45 31 315 -24 -42 38 48 -42 49 57 -42 15 40 -43 13 22 169 0 0 -42 42 47 14 24 37 30 314 -24 -42 37 13 -42 48 21 -42 14 5 -43 11 47 170 0 0 -42 41 21 14 24 30 30 313 -24 -42 35 47 -42 46 56 -42 12 39 -43 10 21 171 0 0 -42 40 5 14 24 23 29 312 -23 -42 34 32 -42 45 40 -42 11 23 -43 9 5 172 0 0 -42 39 0 14 24 16 29 311 -23 -42 33 26 -42 44 34 -42 10 18 -43 7 59 173 0 0 -42 38 4 14 24 9 28 310 -23 -42 32 30 -42 43 38 -42 9 22 -43 7 3 174 0 0 -42 37 18 14 24 2 28 309 -22 -42 31 44 -42 42 52 -42 8 36 -43 6 17 175 0 0 -42 36 42 14 23 56 27 309 -22 -42 31 8 -42 42 16 -42 8 0 -43 5 41 176 0 0 -42 36 16 14 23 49 27 308 -21 -42 30 42 -42 41 50 -42 7 34 -43 5 16 177 0 0 -42 36 0 14 23 43 26 307 -21 -42 30 26 -42 41 35 -42 7 18 -43 5 0 178 0 0 -42 35 54 14 23 37 26 306 -21 -42 30 21 -42 41 29 -42 7 12 -43 4 54 179 0 0 -42 35 59 14 23 30 25 305 -20 -42 30 25 -42 41 33 -42 7 17 -43 4 59 180 0 0 -42 36 13 14 23 24 24 304 -20 -42 30 39 -42 41 48 -42 7 31 -43 5 14 -179 0 0 -42 36 38 14 23 18 24 303 -19 -42 31 4 -42 42 13 -42 7 55 -43 5 39 -178 0 0 -42 37 13 14 23 13 23 303 -19 -42 31 39 -42 42 47 -42 8 30 -43 6 14 -177 0 0 -42 37 58 14 23 7 23 302 -18 -42 32 24 -42 43 33 -42 9 15 -43 6 59 -176 0 0 -42 38 53 14 23 2 22 301 -18 -42 33 19 -42 44 28 -42 10 9 -43 7 54 -175 0 0 -42 39 58 14 22 56 21 300 -17 -42 34 24 -42 45 33 -42 11 14 -43 9 0 -174 0 0 -42 41 14 14 22 51 21 299 -17 -42 35 39 -42 46 48 -42 12 29 -43 10 16 -173 0 0 -42 42 39 14 22 46 20 299 -16 -42 37 5 -42 48 14 -42 13 55 -43 11 42 -172 0 0 -42 44 15 14 22 41 19 298 -16 -42 38 40 -42 49 50 -42 15 30 -43 13 18 -171 0 0 -42 46 1 14 22 36 19 297 -15 -42 40 26 -42 51 36 -42 17 15 -43 15 4 -170 0 0 -42 47 56 14 22 32 18 296 -14 -42 42 22 -42 53 32 -42 19 10 -43 17 0 -169 0 0 -42 50 2 14 22 28 17 296 -14 -42 44 28 -42 55 38 -42 21 16 -43 19 7 -168 0 0 -42 52 18 14 22 23 17 295 -13 -42 46 44 -42 57 54 -42 23 31 -43 21 23 -167 0 0 -42 54 44 14 22 19 16 294 -13 -42 49 9 -43 0 20 -42 25 57 -43 23 50 -166 0 0 -42 57 20 14 22 15 15 293 -12 -42 51 45 -43 2 56 -42 28 32 -43 26 26 -165 0 0 -43 0 6 14 22 11 15 293 -12 -42 54 31 -43 5 42 -42 31 17 -43 29 13 -164 0 0 -43 3 2 14 22 8 14 292 -11 -42 57 27 -43 8 38 -42 34 13 -43 32 9 -163 0 0 -43 6 7 14 22 4 13 291 -10 -43 0 32 -43 11 44 -42 37 17 -43 35 15 -162 0 0 -43 9 23 14 22 1 13 290 -10 -43 3 47 -43 14 59 -42 40 32 -43 38 32 -161 0 0 -43 12 48 14 21 58 12 290 -9 -43 7 12 -43 18 24 -42 43 57 -43 41 57 -160 0 0 -43 16 23 14 21 55 11 289 -8 -43 10 47 -43 21 59 -42 47 31 -43 45 33 -159 0 0 -43 20 7 14 21 52 11 288 -8 -43 14 31 -43 25 44 -42 51 14 -43 49 18 -158 0 0 -43 24 1 14 21 50 10 288 -7 -43 18 25 -43 29 38 -42 55 8 -43 53 13 -157 0 0 -43 28 5 14 21 47 9 287 -7 -43 22 29 -43 33 42 -42 59 10 -43 57 17 -156 0 0 -43 32 18 14 21 45 8 286 -6 -43 26 41 -43 37 55 -43 3 23 -44 1 31 -155 0 0 -43 36 40 14 21 43 8 285 -5 -43 31 3 -43 42 17 -43 7 44 -44 5 54 -154 0 0 -43 41 11 14 21 41 7 285 -5 -43 35 35 -43 46 49 -43 12 15 -44 10 26 -153 0 0 -43 45 52 14 21 40 6 284 -4 -43 40 15 -43 51 30 -43 16 54 -44 15 8 -152 0 0 -43 50 42 14 21 38 6 283 -3 -43 45 5 -43 56 19 -43 21 43 -44 19 58 -151 0 0 -43 55 40 14 21 37 5 283 -3 -43 50 3 -44 1 18 -43 26 41 -44 24 58 -150 0 0 -44 0 48 14 21 36 4 282 -2 -43 55 11 -44 6 26 -43 31 48 -44 30 7 -149 0 0 -44 6 4 14 21 35 3 281 -1 -44 0 27 -44 11 43 -43 37 3 -44 35 24 -148 0 0 -44 11 29 14 21 34 3 281 0 -44 5 52 -44 17 8 .. .. .. -44 40 50 Uncertainty in time = +/- 4 secs Prediction of 2012 Oct 8.0 Data for the target star ------------------------ * name: TYC 0052-00852-1 * constellation : Cetus * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 02 30 49.9144 DE: +05 36 58.174 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .024, .026 ) * V mag [mag]: 10.4 * B mag [mag]: 11.7 * Diameter [mas]: 0 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (1056) Azalea approx. diameter [km]: 13 approx. diameter ["]: .015 distance from Earth [AU]: 1.16300 * orbital information: orbit source: Preston date of fit: 2012 Oct 07 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 1355 number of rejected observations: 34 time covered by the observations: 1924 Feb 01 - 2012 Oct 01 1 sigma uncertainty ellipse (major, minor, PA): 0.034, 0.018, 70° remarks: * orbital elements for (1056) Azalea : Mean anomaly = 66.18077752 deg Arg. of pericenter = 212.39966814 deg Long. of node = 104.18981610 deg Inclination = 5.42500728 deg Eccentricity = 0.17717947 Semimajor axis = 2.23055298 AU Perihelion dist = 1.83534480 AU Mag: H = 11.62, G = 0.15 Epoch of elements : MJD 56242.60400000 TDT (2012 Nov 11.604) ------ occelmnt file for Occult BEGIN ----------------------------------- 2012 Nov 11 1056 Azalea 14h 29.2m UT 10.4 2 30 49.914 5 36 58.17TYC 0052-00852-1 11.7 14.1 13 1.5 1.163 -2.498 -3.97 129.2755 5.616 -41.27 -17.63 14.4863 0.08244 -0.76856 -4.93545 -0.52705 0.00084 0.00116 2000 65.410360201211 9.00000212.399668104.189816 5.4250070.17717947 2.2305530 1.835344811.6 5.00.15 RATE 2.9585940 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.042 0.031 77 3.09 0.032 0 0 4 4 456208.0020121111_0852-1 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2012 Oct 07, 20:28 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org