IOTA/IOTA-ES occultation update for (54520) 2000 PJ30 / UCAC2 27764730 event on 2012 Sep 16, 19:14 UT Visible from near Australia Summary ------- On 2012 Sep 16 UT, the 111 km diameter asteroid (54520) 2000 PJ30 will occult a 12.1 mag star in the constellation Capricornus for observers along a path across near Australia. In the case of an occultation, the combined light of the asteroid and the star will drop by 12.8 mag to 24.9 mag (the magnitude of the asteroid) for at most 5.5 seconds. This update is based on historical astrometry from the MPC files (via AstDys), and the following catalogs for the star position: UCAC. The event at a glimpse ---------------------- * Rank: 0 * date and approx. time of event: 2012 Sep 16, 19:11 - 2012 Sep 16, 19:19 UT * geocentric midpoint of event [JD]: 2456187.3029125 * magnitude of target star: 12.1 * magnitude drop [mag]: 12.8 * estimated maximum duration [s]: 5.5 * Moon: 1 % sunlit, 137° distance * Sun: 147° distance * rough path description: near Australia The occultation path -------------------- * approximate projected width [km]: 133 * 1 sigma uncertainty interval [path widths]: +/- 1212.64 * 1 sigma uncertainty interval [seconds]: +/- 46904.4 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 26.299 +/- 11.981) * 1 sigma uncertainty ellipse (major, minor, PA): ( 28.788", 2.834", 66° ) * approx speed of asteroid's shadow [km/s]: 20.2468 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC2 27764730 by 54520 2000 PJ30 on 2012 Sep 16 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 - 24 0 0 -56 40 12 19 19 56 25 72 0 -56 4 17 -57 16 21 .. .. .. .. .. .. - 23 0 0 -56 40 9 19 19 55 26 71 -1 -56 4 14 -57 16 19 .. .. .. .. .. .. - 22 0 0 -56 39 50 19 19 53 26 70 -2 -56 3 55 -57 16 1 .. .. .. .. .. .. - 21 0 0 -56 39 16 19 19 52 27 69 -2 -56 3 21 -57 15 26 .. .. .. .. .. .. - 20 0 0 -56 38 26 19 19 50 27 68 -3 -56 2 30 -57 14 37 .. .. .. .. .. .. - 19 0 0 -56 37 19 19 19 48 28 67 -3 -56 1 23 -57 13 31 .. .. .. .. .. .. - 18 0 0 -56 35 57 19 19 47 28 66 -4 -55 59 59 -57 12 9 .. .. .. .. .. .. - 17 0 0 -56 34 19 19 19 45 29 65 -4 -55 58 20 -57 10 32 .. .. .. .. .. .. - 16 0 0 -56 32 24 19 19 43 29 64 -5 -55 56 25 -57 8 39 .. .. .. .. .. .. - 15 0 0 -56 30 14 19 19 41 30 63 -5 -55 54 14 -57 6 30 .. .. .. .. .. .. - 14 0 0 -56 27 48 19 19 39 30 62 -6 -55 51 46 -57 4 5 .. .. .. .. .. .. - 13 0 0 -56 25 6 19 19 38 31 61 -6 -55 49 2 -57 1 25 .. .. .. .. .. .. - 12 0 0 -56 22 8 19 19 36 32 60 -7 -55 46 2 -56 58 28 .. .. .. .. .. .. - 11 0 0 -56 18 53 19 19 34 32 59 -8 -55 42 46 -56 55 15 .. .. .. .. .. .. - 10 0 0 -56 15 23 19 19 32 33 59 -8 -55 39 14 -56 51 47 .. .. .. .. .. .. - 9 0 0 -56 11 36 19 19 30 33 58 -9 -55 35 25 -56 48 2 .. .. .. .. .. .. - 8 0 0 -56 7 33 19 19 28 34 57 -9 -55 31 20 -56 44 1 .. .. .. .. .. .. - 7 0 0 -56 3 14 19 19 26 34 56 -10 -55 26 59 -56 39 44 .. .. .. .. .. .. - 6 0 0 -55 58 38 19 19 24 35 55 -10 -55 22 21 -56 35 11 .. .. .. .. .. .. - 5 0 0 -55 53 46 19 19 21 35 54 -11 -55 17 26 -56 30 22 .. .. .. .. .. .. - 4 0 0 -55 48 38 19 19 19 36 53 -11 -55 12 15 -56 25 16 .. .. .. .. .. .. - 3 0 0 -55 43 13 19 19 17 36 52 -12 -55 6 47 -56 19 54 .. .. .. .. .. .. - 2 0 0 -55 37 31 19 19 15 36 51 -13 -55 1 3 -56 14 15 .. .. .. .. .. .. - 1 0 0 -55 31 33 19 19 13 37 49 -13 -54 55 2 -56 8 20 .. .. .. .. .. .. 0 0 0 -55 25 18 19 19 10 37 48 -14 -54 48 44 -56 2 8 .. .. .. .. .. .. 1 0 0 -55 18 47 19 19 8 38 47 -14 -54 42 9 -55 55 40 .. .. .. .. .. .. 2 0 0 -55 11 58 19 19 6 38 46 -15 -54 35 18 -55 48 55 .. .. .. .. .. .. 3 0 0 -55 4 53 19 19 3 39 45 -15 -54 28 9 -55 41 53 .. .. .. .. .. .. 4 0 0 -54 57 30 19 19 1 39 44 -16 -54 20 43 -55 34 34 .. .. .. .. .. .. 5 0 0 -54 49 51 19 18 58 40 43 -17 -54 13 0 -55 26 58 .. .. .. .. .. .. 6 0 0 -54 41 54 19 18 56 40 42 -17 -54 5 0 -55 19 5 .. .. .. .. .. .. 7 0 0 -54 33 41 19 18 53 41 41 -18 -53 56 42 -55 10 55 .. .. .. .. .. .. 8 0 0 -54 25 9 19 18 51 41 40 -18 -53 48 7 -55 2 28 .. .. .. .. .. .. 9 0 0 -54 16 21 19 18 48 42 39 -19 -53 39 15 -54 53 44 .. .. .. .. .. .. 10 0 0 -54 7 15 19 18 45 42 38 -20 -53 30 5 -54 44 42 .. .. .. .. .. .. 11 0 0 -53 57 52 19 18 43 43 36 -20 -53 20 37 -54 35 23 .. .. .. .. .. .. 12 0 0 -53 48 10 19 18 40 43 35 -21 -53 10 52 -54 25 46 .. .. .. .. .. .. 13 0 0 -53 38 12 19 18 37 44 34 -21 -53 0 49 -54 15 51 .. .. .. .. .. .. 14 0 0 -53 27 55 19 18 34 44 33 -22 -52 50 28 -54 5 39 .. .. .. .. .. .. 15 0 0 -53 17 21 19 18 32 45 32 -23 -52 39 49 -53 55 9 .. .. .. .. .. .. 16 0 0 -53 6 28 19 18 29 45 31 -23 -52 28 53 -53 44 22 .. .. .. .. .. .. 17 0 0 -52 55 18 19 18 26 46 29 -24 -52 17 38 -53 33 16 .. .. .. .. .. .. 18 0 0 -52 43 50 19 18 23 46 28 -24 -52 6 5 -53 21 52 .. .. .. .. .. .. 19 0 0 -52 32 4 19 18 20 46 27 -25 -51 54 14 -53 10 10 .. .. .. .. .. .. 20 0 0 -52 19 59 19 18 17 47 26 -26 -51 42 5 -52 58 11 .. .. .. .. .. .. 21 0 0 -52 7 36 19 18 14 47 24 -26 -51 29 38 -52 45 53 .. .. .. .. .. .. 22 0 0 -51 54 55 19 18 10 48 23 -27 -51 16 52 -52 33 16 .. .. .. .. .. .. 23 0 0 -51 41 56 19 18 7 48 22 -27 -51 3 48 -52 20 22 .. .. .. .. .. .. 24 0 0 -51 28 38 19 18 4 49 20 -28 -50 50 26 -52 7 9 .. .. .. .. .. .. 25 0 0 -51 15 2 19 18 1 49 19 -29 -50 36 45 -51 53 37 .. .. .. .. .. .. 26 0 0 -51 1 7 19 17 57 50 18 -29 -50 22 45 -51 39 48 .. .. .. .. .. .. 27 0 0 -50 46 54 19 17 54 50 16 -30 -50 8 28 -51 25 39 .. .. .. .. .. .. 28 0 0 -50 32 23 19 17 51 50 15 -31 -49 53 52 -51 11 13 .. .. .. .. .. .. 29 0 0 -50 17 33 19 17 47 51 13 -31 -49 38 57 -50 56 28 .. .. .. .. .. .. 30 0 0 -50 2 24 19 17 44 51 12 -32 -49 23 44 -50 41 24 .. .. .. .. .. .. 31 0 0 -49 46 58 19 17 40 51 10 -33 -49 8 12 -50 26 2 .. .. .. .. .. .. 32 0 0 -49 31 12 19 17 37 52 9 -33 -48 52 22 -50 10 21 .. .. .. .. .. .. 33 0 0 -49 15 8 19 17 33 52 7 -34 -48 36 14 -49 54 22 .. .. .. .. .. .. 34 0 0 -48 58 46 19 17 29 53 6 -34 -48 19 47 -49 38 4 .. .. .. .. .. .. 35 0 0 -48 42 6 19 17 25 53 4 -35 -48 3 2 -49 21 28 .. .. .. .. .. .. 36 0 0 -48 25 7 19 17 22 53 3 -36 -47 45 59 -49 4 34 .. .. .. .. .. .. 37 0 0 -48 7 50 19 17 18 54 1 -36 -47 28 38 -48 47 22 .. .. .. .. .. .. 38 0 0 -47 50 15 19 17 14 54 360 -37 -47 10 58 -48 29 51 .. .. .. .. .. .. 39 0 0 -47 32 21 19 17 10 54 358 -38 -46 53 1 -48 12 2 .. .. .. .. .. .. 40 0 0 -47 14 10 19 17 6 54 356 -38 -46 34 45 -47 53 55 .. .. .. .. .. .. 41 0 0 -46 55 41 19 17 2 55 354 -39 -46 16 12 -47 35 30 .. .. .. .. .. .. 42 0 0 -46 36 55 19 16 58 55 353 -40 -45 57 22 -47 16 48 .. .. .. .. .. .. 43 0 0 -46 17 50 19 16 54 55 351 -40 -45 38 14 -46 57 47 .. .. .. .. .. .. 44 0 0 -45 58 29 19 16 50 55 349 -41 -45 18 48 -46 38 30 .. .. .. .. .. .. 45 0 0 -45 38 50 19 16 46 55 347 -42 -44 59 6 -46 18 55 .. .. .. .. .. .. 46 0 0 -45 18 54 19 16 42 56 346 -42 -44 39 7 -45 59 2 .. .. .. .. .. .. 47 0 0 -44 58 42 19 16 38 56 344 -43 -44 18 51 -45 38 53 .. .. .. .. .. .. 48 0 0 -44 38 13 19 16 33 56 342 -44 -43 58 19 -45 18 28 .. .. .. .. .. .. 49 0 0 -44 17 27 19 16 29 56 340 -44 -43 37 30 -44 57 45 .. .. .. .. .. .. 50 0 0 -43 56 26 19 16 25 56 338 -45 -43 16 26 -44 36 47 .. .. .. .. .. .. 51 0 0 -43 35 9 19 16 20 56 336 -46 -42 55 6 -44 15 33 .. .. .. .. .. .. 52 0 0 -43 13 36 19 16 16 56 335 -46 -42 33 30 -43 54 3 .. .. .. .. .. .. 53 0 0 -42 51 48 19 16 12 56 333 -47 -42 11 40 -43 32 18 .. .. .. .. .. .. 54 0 0 -42 29 45 19 16 7 56 331 -47 -41 49 35 -43 10 17 .. .. .. .. .. .. 55 0 0 -42 7 28 19 16 3 56 329 -48 -41 27 15 -42 48 2 .. .. .. .. .. .. 56 0 0 -41 44 57 19 15 58 56 327 -49 -41 4 42 -42 25 33 .. .. .. .. .. .. 57 0 0 -41 22 12 19 15 54 56 325 -49 -40 41 55 -42 2 50 .. .. .. .. .. .. 58 0 0 -40 59 13 19 15 49 56 323 -50 -40 18 55 -41 39 53 .. .. .. .. .. .. 59 0 0 -40 36 2 19 15 44 56 321 -51 -39 55 42 -41 16 43 .. .. .. .. .. .. 60 0 0 -40 12 38 19 15 40 56 320 -51 -39 32 16 -40 53 21 .. .. .. .. .. .. 61 0 0 -39 49 2 19 15 35 55 318 -52 -39 8 39 -40 29 46 .. .. .. .. .. .. 62 0 0 -39 25 14 19 15 31 55 316 -52 -38 44 51 -40 6 0 .. .. .. .. .. .. 63 0 0 -39 1 16 19 15 26 55 314 -53 -38 20 51 -39 42 2 .. .. .. .. .. .. 64 0 0 -38 37 6 19 15 21 55 312 -53 -37 56 41 -39 17 53 .. .. .. .. .. .. 65 0 0 -38 12 47 19 15 17 54 311 -54 -37 32 21 -38 53 34 .. .. .. .. .. .. 66 0 0 -37 48 18 19 15 12 54 309 -54 -37 7 52 -38 29 6 .. .. .. .. .. .. 67 0 0 -37 23 40 19 15 7 54 307 -55 -36 43 14 -38 4 28 .. .. .. .. .. .. 68 0 0 -36 58 54 19 15 2 53 306 -55 -36 18 28 -37 39 41 .. .. .. .. .. .. 69 0 0 -36 33 59 19 14 58 53 304 -56 -35 53 34 -37 14 47 .. .. .. .. .. .. 70 0 0 -36 8 58 19 14 53 52 302 -56 -35 28 33 -36 49 45 .. .. .. .. .. .. 71 0 0 -35 43 50 19 14 48 52 301 -57 -35 3 25 -36 24 36 .. .. .. .. .. .. 72 0 0 -35 18 35 19 14 44 51 299 -57 -34 38 12 -35 59 20 .. .. .. .. .. .. 73 0 0 -34 53 15 19 14 39 51 298 -57 -34 12 53 -35 34 0 .. .. .. .. .. .. 74 0 0 -34 27 51 19 14 34 50 296 -58 -33 47 29 -35 8 34 .. .. .. .. .. .. 75 0 0 -34 2 22 19 14 30 50 295 -58 -33 22 2 -34 43 3 .. .. .. .. .. .. 76 0 0 -33 36 49 19 14 25 49 293 -58 -32 56 31 -34 17 29 .. .. .. .. .. .. 77 0 0 -33 11 14 19 14 20 49 292 -58 -32 30 57 -33 51 52 .. .. .. .. .. .. 78 0 0 -32 45 37 19 14 16 48 291 -59 -32 5 22 -33 26 13 .. .. .. .. .. .. 79 0 0 -32 19 57 19 14 11 47 290 -59 -31 39 45 -33 0 32 .. .. .. .. .. .. 80 0 0 -31 54 18 19 14 7 47 288 -59 -31 14 7 -32 34 49 .. .. .. .. .. .. 81 0 0 -31 28 37 19 14 2 46 287 -59 -30 48 29 -32 9 7 .. .. .. .. .. .. 82 0 0 -31 2 58 19 13 58 45 286 -59 -30 22 52 -31 43 24 .. .. .. .. .. .. 83 0 0 -30 37 19 19 13 53 45 285 -59 -29 57 16 -31 17 43 .. .. .. .. .. .. 84 0 0 -30 11 43 19 13 49 44 284 -59 -29 31 42 -30 52 4 .. .. .. .. .. .. 85 0 0 -29 46 9 19 13 45 43 283 -59 -29 6 11 -30 26 27 .. .. .. .. .. .. 86 0 0 -29 20 38 19 13 40 43 282 -59 -28 40 43 -30 0 53 .. .. .. .. .. .. 87 0 0 -28 55 11 19 13 36 42 281 -59 -28 15 20 -29 35 23 .. .. .. .. .. .. 88 0 0 -28 29 49 19 13 32 41 280 -59 -27 50 1 -29 9 57 .. .. .. .. .. .. 89 0 0 -28 4 32 19 13 28 40 279 -59 -27 24 47 -28 44 36 .. .. .. .. .. .. 90 0 0 -27 39 21 19 13 24 39 278 -58 -26 59 40 -28 19 22 .. .. .. .. .. .. 91 0 0 -27 14 17 19 13 20 39 277 -58 -26 34 39 -27 54 14 .. .. .. .. .. .. 92 0 0 -26 49 20 19 13 16 38 276 -58 -26 9 46 -27 29 13 .. .. .. .. .. .. 93 0 0 -26 24 31 19 13 12 37 275 -58 -25 45 1 -27 4 20 .. .. .. .. .. .. 94 0 0 -25 59 51 19 13 8 36 274 -57 -25 20 25 -26 39 36 .. .. .. .. .. .. 95 0 0 -25 35 20 19 13 4 35 274 -57 -24 55 59 -26 15 1 .. .. .. .. .. .. 96 0 0 -25 10 59 19 13 0 34 273 -56 -24 31 42 -25 50 36 .. .. .. .. .. .. 97 0 0 -24 46 49 19 12 57 34 272 -56 -24 7 36 -25 26 22 .. .. .. .. .. .. 98 0 0 -24 22 51 19 12 53 33 272 -55 -23 43 42 -25 2 19 .. .. .. .. .. .. 99 0 0 -23 59 4 19 12 50 32 271 -55 -23 19 59 -24 38 28 .. .. .. .. .. .. 100 0 0 -23 35 29 19 12 46 31 270 -54 -22 56 29 -24 14 49 .. .. .. .. .. .. 101 0 0 -23 12 8 19 12 43 30 270 -54 -22 33 12 -23 51 23 .. .. .. .. .. .. 102 0 0 -22 49 1 19 12 40 29 269 -53 -22 10 9 -23 28 11 .. .. .. .. .. .. 103 0 0 -22 26 8 19 12 37 28 268 -53 -21 47 21 -23 5 14 .. .. .. .. .. .. 104 0 0 -22 3 30 19 12 34 27 268 -52 -21 24 47 -22 42 31 .. .. .. .. .. .. 105 0 0 -21 41 7 19 12 31 26 267 -51 -21 2 29 -22 20 4 .. .. .. .. .. .. 106 0 0 -21 19 0 19 12 28 25 267 -51 -20 40 27 -21 57 52 .. .. .. .. .. .. 107 0 0 -20 57 10 19 12 25 24 266 -50 -20 18 42 -21 35 58 .. .. .. .. .. .. 108 0 0 -20 35 37 19 12 22 23 266 -49 -19 57 13 -21 14 20 .. .. .. .. .. .. 109 0 0 -20 14 22 19 12 20 23 265 -48 -19 36 2 -20 53 0 .. .. .. .. .. .. 110 0 0 -19 53 25 19 12 17 22 265 -48 -19 15 10 -20 31 58 .. .. .. .. .. .. 111 0 0 -19 32 46 19 12 15 21 265 -47 -18 54 36 -20 11 15 .. .. .. .. .. .. 112 0 0 -19 12 27 19 12 13 20 264 -46 -18 34 21 -19 50 51 .. .. .. .. .. .. 113 0 0 -18 52 27 19 12 11 19 264 -45 -18 14 26 -19 30 46 .. .. .. .. .. .. 114 0 0 -18 32 47 19 12 9 18 263 -45 -17 54 50 -19 11 2 .. .. .. .. .. .. 115 0 0 -18 13 28 19 12 7 17 263 -44 -17 35 35 -18 51 38 .. .. .. .. .. .. 116 0 0 -17 54 29 19 12 5 16 263 -43 -17 16 41 -18 32 35 .. .. .. .. .. .. 117 0 0 -17 35 52 19 12 3 15 262 -42 -16 58 8 -18 13 53 .. .. .. .. .. .. 118 0 0 -17 17 36 19 12 1 14 262 -41 -16 39 57 -17 55 33 .. .. .. .. .. .. 119 0 0 -16 59 43 19 12 0 13 262 -40 -16 22 8 -17 37 35 .. .. .. .. .. .. 120 0 0 -16 42 12 19 11 59 12 261 -39 -16 4 41 -17 20 0 .. .. .. .. .. .. 121 0 0 -16 25 4 19 11 57 11 261 -39 -15 47 37 -17 2 48 .. .. .. .. .. .. 122 0 0 -16 8 19 19 11 56 10 261 -38 -15 30 56 -16 45 58 .. .. .. .. .. .. 123 0 0 -15 51 58 19 11 55 9 260 -37 -15 14 39 -16 29 33 .. .. .. .. .. .. 124 0 0 -15 36 0 19 11 54 8 260 -36 -14 58 45 -16 13 31 .. .. .. .. .. .. 125 0 0 -15 20 27 19 11 53 7 260 -35 -14 43 16 -15 57 54 .. .. .. .. .. .. 126 0 0 -15 5 18 19 11 52 6 260 -34 -14 28 11 -15 42 41 .. .. .. .. .. .. 127 0 0 -14 50 34 19 11 52 5 259 -33 -14 13 31 -15 27 54 .. .. .. .. .. .. 128 0 0 -14 36 15 19 11 51 4 259 -32 -13 59 15 -15 13 31 .. .. .. .. .. .. 129 0 0 -14 22 21 19 11 51 3 259 -31 -13 45 25 -14 59 34 .. .. .. .. .. .. 130 0 0 -14 8 53 19 11 51 2 259 -30 -13 32 1 -14 46 2 .. .. .. .. .. .. 131 0 0 -13 55 51 19 11 51 1 258 -29 -13 19 2 -14 32 56 .. .. .. .. .. .. Uncertainty in time = +/- 48200 secs Prediction of 2011 May 6.0 Data for the target star ------------------------ * name: UCAC2 27764730 * constellation : Capricornus * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 21 31 55.2169 DE: -11 39 32.832 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .076, .076 ) * V mag [mag]: 12.1 * B mag [mag]: 0.0 * Apparent position with proper motion RA(deg): 323.1600273116 DE(deg): -11.5989161884 * Equation of equinoxes (radians) : 0.000066575951339 * Diameter [mas]: 0 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (54520) 2000 PJ30 approx. diameter [km]: 111 approx. diameter ["]: .003 distance from Earth [AU]: 46.74000 * orbital information: orbit source: Preston date of fit: 2011 May 05 source of used astrometry: MPC (via Astdys) number of used observations: 24 number of rejected observations: 0 time covered by the observations: 1999 Jul 21 - 2002 Aug 09 1 sigma uncertainty ellipse (major, minor, PA): 28.788, 2.833, 66° remarks: * orbital elements for (54520) 2000 PJ30 : Mean anomaly = 10.67912541 deg Arg. of pericenter = 303.68126114 deg Long. of node = 293.32466412 deg Inclination = 5.71815937 deg Eccentricity = 0.76504148 Semimajor axis = 121.95312895 AU Perihelion dist = 28.65392631 AU Mag: H = 7.99, G = 0.15 Epoch of elements : MJD 56186.80200000 TDT (2012 Sep 16.802) ------ occelmnt file for Occult BEGIN ----------------------------------- 2012 Sep 16 54520 2000 PJ30 19h 16.2m UT 12.1 21 31 55.217-11 39 32.83UCAC2 27764730 0.0 24.9 111 5.5 46.740 -0.138 -0.73 37.7931 -11.659 -110.40 2.25 19.2699 0.18992 -0.52052-10.75794 -3.85519 0.00315 0.00080 2000 10.6741472012 910.00000303.681261293.324664 5.7181590.76504148121.95312928.6539267 8.0 5.00.15 RATE 0.0073180 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 28.788 2.834 661213.6 3.971 0 0-1-2 055687.0020120916_764730 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2012 Jul 22, 03:57 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org