IOTA/IOTA-ES occultation update for (4041) Miyamotoyohko / TYC 1297-01127-1 event on 2012 Nov 16, 18:17 UT Visible from Australia Summary ------- On 2012 Nov 16 UT, the 20 km diameter asteroid (4041) Miyamotoyohko will occult a 10.1 mag star in the constellation Taurus 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 5.9 mag to 16.0 mag (the magnitude of the asteroid) for at most 1.8 seconds. This update is based on UNSO/Flagstaff astrometry for the asteroid kindly provided by Hugh Harris, historical astrometry from the MPC files (via AstDys), and the following catalogs for the star position: UCAC. The event at a glimpse ---------------------- * Rank: 14 * date and approx. time of event: 2012 Nov 16, 18:09 - 2012 Nov 16, 18:25 UT * geocentric midpoint of event [JD]: 2456248.26172917 * magnitude of target star: 10.1 * magnitude drop [mag]: 5.9 * estimated maximum duration [s]: 1.8 * Moon: 12 % sunlit, 169° distance * Sun: 150° distance * rough path description: Australia The occultation path -------------------- * approximate projected width [km]: 23 * 1 sigma uncertainty interval [path widths]: +/- 4.64 * 1 sigma uncertainty interval [seconds]: +/- 10.9 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .074 +/- .055) * 1 sigma uncertainty ellipse (major, minor, PA): ( .075", .054", 79° ) * approx speed of asteroid's shadow [km/s]: 10.6843 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 1297-01127-1 by 4041 Miyamotoyohko on 2012 Nov 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 29 0 0 -23 55 9 18 25 31 0 72 -25 -23 48 33 -24 1 46 .. .. .. .. .. .. 30 0 0 -23 37 25 18 25 31 1 72 -25 -23 30 49 -23 44 2 .. .. .. -24 45 45 31 0 0 -23 19 49 18 25 30 2 71 -26 -23 13 13 -23 26 25 .. .. .. -24 28 5 32 0 0 -23 2 21 18 25 30 3 71 -27 -22 55 46 -23 8 57 .. .. .. -24 10 34 33 0 0 -22 45 3 18 25 29 4 71 -28 -22 38 28 -22 51 38 .. .. .. -23 53 11 34 0 0 -22 27 54 18 25 28 5 70 -29 -22 21 19 -22 34 29 .. .. .. -23 35 58 35 0 0 -22 10 55 18 25 27 6 70 -30 -22 4 21 -22 17 30 .. .. .. -23 18 54 36 0 0 -21 54 6 18 25 26 7 69 -31 -21 47 33 -22 0 41 -20 46 59 -23 2 1 37 0 0 -21 37 28 18 25 24 8 69 -32 -21 30 55 -21 44 2 -20 30 26 -22 45 19 38 0 0 -21 21 1 18 25 23 9 69 -33 -21 14 28 -21 27 34 -20 14 3 -22 28 47 39 0 0 -21 4 45 18 25 21 10 68 -33 -20 58 13 -21 11 18 -19 57 51 -22 12 26 40 0 0 -20 48 41 18 25 19 11 68 -34 -20 42 9 -20 55 13 -19 41 51 -21 56 18 41 0 0 -20 32 48 18 25 17 12 68 -35 -20 26 17 -20 39 21 -19 26 4 -21 40 21 42 0 0 -20 17 8 18 25 14 13 67 -36 -20 10 37 -20 23 40 -19 10 28 -21 24 36 43 0 0 -20 1 41 18 25 12 14 67 -37 -19 55 10 -20 8 12 -18 55 5 -21 9 4 44 0 0 -19 46 27 18 25 9 14 66 -38 -19 39 56 -19 52 57 -18 39 55 -20 53 45 45 0 0 -19 31 25 18 25 6 15 66 -39 -19 24 56 -19 37 56 -18 24 59 -20 38 39 46 0 0 -19 16 38 18 25 3 16 66 -39 -19 10 8 -19 23 7 -18 10 16 -20 23 46 47 0 0 -19 2 4 18 24 59 17 65 -40 -18 55 35 -19 8 33 -17 55 46 -20 9 7 48 0 0 -18 47 44 18 24 56 18 65 -41 -18 41 15 -18 54 13 -17 41 31 -19 54 43 49 0 0 -18 33 38 18 24 52 19 65 -42 -18 27 10 -18 40 6 -17 27 30 -19 40 32 50 0 0 -18 19 47 18 24 48 20 64 -43 -18 13 19 -18 26 15 -17 13 43 -19 26 37 51 0 0 -18 6 11 18 24 44 21 64 -43 -17 59 44 -18 12 38 -17 0 11 -19 12 56 52 0 0 -17 52 50 18 24 40 22 63 -44 -17 46 23 -17 59 17 -16 46 55 -18 59 30 53 0 0 -17 39 44 18 24 35 23 63 -45 -17 33 17 -17 46 10 -16 33 53 -18 46 20 54 0 0 -17 26 53 18 24 31 24 63 -46 -17 20 28 -17 33 20 -16 21 7 -18 33 25 55 0 0 -17 14 19 18 24 26 25 62 -46 -17 7 53 -17 20 44 -16 8 37 -18 20 45 56 0 0 -17 2 0 18 24 21 26 62 -47 -16 55 35 -17 8 25 -15 56 23 -18 8 22 57 0 0 -16 49 57 18 24 16 27 61 -48 -16 43 33 -16 56 22 -15 44 24 -17 56 15 58 0 0 -16 38 11 18 24 11 28 61 -48 -16 31 47 -16 44 36 -15 32 42 -17 44 25 59 0 0 -16 26 41 18 24 6 28 61 -49 -16 20 18 -16 33 6 -15 21 17 -17 32 51 60 0 0 -16 15 28 18 24 0 29 60 -50 -16 9 5 -16 21 52 -15 10 8 -17 21 33 61 0 0 -16 4 32 18 23 54 30 60 -50 -15 58 9 -16 10 56 -14 59 16 -17 10 33 62 0 0 -15 53 53 18 23 48 31 59 -51 -15 47 31 -16 0 16 -14 48 40 -16 59 50 63 0 0 -15 43 31 18 23 42 32 59 -51 -15 37 9 -15 49 54 -14 38 22 -16 49 24 64 0 0 -15 33 26 18 23 36 33 58 -52 -15 27 5 -15 39 49 -14 28 21 -16 39 15 65 0 0 -15 23 39 18 23 30 34 58 -53 -15 17 18 -15 30 1 -14 18 38 -16 29 24 66 0 0 -15 14 10 18 23 24 35 57 -53 -15 7 49 -15 20 31 -14 9 12 -16 19 51 67 0 0 -15 4 58 18 23 17 36 57 -54 -14 58 37 -15 11 19 -14 0 4 -16 10 36 68 0 0 -14 56 4 18 23 10 36 56 -54 -14 49 44 -15 2 25 -13 51 13 -16 1 38 69 0 0 -14 47 28 18 23 3 37 56 -54 -14 41 8 -14 53 49 -13 42 41 -15 52 59 70 0 0 -14 39 10 18 22 56 38 55 -55 -14 32 51 -14 45 30 -13 34 26 -15 44 37 71 0 0 -14 31 11 18 22 49 39 54 -55 -14 24 51 -14 37 30 -13 26 29 -15 36 34 72 0 0 -14 23 29 18 22 42 40 54 -56 -14 17 10 -14 29 49 -13 18 51 -15 28 50 73 0 0 -14 16 6 18 22 35 41 53 -56 -14 9 47 -14 22 25 -13 11 31 -15 21 24 74 0 0 -14 9 2 18 22 27 41 53 -56 -14 2 43 -14 15 21 -13 4 29 -15 14 17 75 0 0 -14 2 16 18 22 20 42 52 -57 -13 55 58 -14 8 34 -12 57 46 -15 7 28 76 0 0 -13 55 49 18 22 12 43 51 -57 -13 49 31 -14 2 7 -12 51 22 -15 0 58 77 0 0 -13 49 40 18 22 4 44 50 -57 -13 43 22 -13 55 58 -12 45 16 -14 54 47 78 0 0 -13 43 50 18 21 56 45 50 -57 -13 37 33 -13 50 8 -12 39 28 -14 48 54 79 0 0 -13 38 19 18 21 48 45 49 -57 -13 32 2 -13 44 37 -12 34 0 -14 43 21 80 0 0 -13 33 7 18 21 40 46 48 -58 -13 26 50 -13 39 25 -12 28 50 -14 38 7 81 0 0 -13 28 14 18 21 32 47 47 -58 -13 21 57 -13 34 31 -12 23 59 -14 33 12 82 0 0 -13 23 40 18 21 23 48 46 -58 -13 17 24 -13 29 57 -12 19 27 -14 28 36 83 0 0 -13 19 25 18 21 15 48 46 -58 -13 13 9 -13 25 42 -12 15 13 -14 24 19 84 0 0 -13 15 29 18 21 7 49 45 -58 -13 9 13 -13 21 46 -12 11 19 -14 20 21 85 0 0 -13 11 53 18 20 58 50 44 -58 -13 5 36 -13 18 9 -12 7 44 -14 16 43 86 0 0 -13 8 35 18 20 49 51 43 -58 -13 2 19 -13 14 51 -12 4 28 -14 13 24 87 0 0 -13 5 37 18 20 41 51 42 -57 -12 59 21 -13 11 53 -12 1 31 -14 10 24 88 0 0 -13 2 57 18 20 32 52 41 -57 -12 56 42 -13 9 14 -11 58 53 -14 7 44 89 0 0 -13 0 37 18 20 23 52 39 -57 -12 54 22 -13 6 53 -11 56 34 -14 5 22 90 0 0 -12 58 37 18 20 14 53 38 -57 -12 52 21 -13 4 53 -11 54 34 -14 3 21 91 0 0 -12 56 55 18 20 5 54 37 -57 -12 50 40 -13 3 11 -11 52 53 -14 1 39 92 0 0 -12 55 33 18 19 56 54 36 -56 -12 49 18 -13 1 49 -11 51 32 -14 0 16 93 0 0 -12 54 30 18 19 47 55 35 -56 -12 48 15 -13 0 46 -11 50 29 -13 59 12 94 0 0 -12 53 46 18 19 37 55 33 -56 -12 47 31 -13 0 2 -11 49 46 -13 58 28 95 0 0 -12 53 22 18 19 28 56 32 -55 -12 47 7 -12 59 38 -11 49 22 -13 58 3 96 0 0 -12 53 17 18 19 19 56 31 -55 -12 47 2 -12 59 33 -11 49 17 -13 57 58 97 0 0 -12 53 31 18 19 9 57 29 -55 -12 47 16 -12 59 47 -11 49 31 -13 58 12 98 0 0 -12 54 4 18 19 0 57 28 -54 -12 47 49 -13 0 20 -11 50 5 -13 58 46 99 0 0 -12 54 57 18 18 50 58 26 -54 -12 48 42 -13 1 13 -11 50 57 -13 59 38 100 0 0 -12 56 9 18 18 41 58 24 -53 -12 49 53 -13 2 24 -11 52 8 -14 0 50 101 0 0 -12 57 40 18 18 31 58 23 -53 -12 51 24 -13 3 55 -11 53 39 -14 2 22 102 0 0 -12 59 30 18 18 22 59 21 -52 -12 53 14 -13 5 45 -11 55 28 -14 4 13 103 0 0 -13 1 39 18 18 12 59 20 -52 -12 55 23 -13 7 55 -11 57 36 -14 6 22 104 0 0 -13 4 7 18 18 2 59 18 -51 -12 57 51 -13 10 23 -12 0 4 -14 8 51 105 0 0 -13 6 54 18 17 53 59 16 -51 -13 0 38 -13 13 10 -12 2 50 -14 11 40 106 0 0 -13 10 0 18 17 43 60 14 -50 -13 3 44 -13 16 17 -12 5 55 -14 14 47 107 0 0 -13 13 25 18 17 33 60 12 -49 -13 7 9 -13 19 42 -12 9 19 -14 18 13 108 0 0 -13 17 9 18 17 24 60 11 -49 -13 10 53 -13 23 26 -12 13 2 -14 21 59 109 0 0 -13 21 12 18 17 14 60 9 -48 -13 14 56 -13 27 29 -12 17 3 -14 26 3 110 0 0 -13 25 34 18 17 4 60 7 -47 -13 19 17 -13 31 50 -12 21 23 -14 30 26 111 0 0 -13 30 14 18 16 54 60 5 -47 -13 23 57 -13 36 31 -12 26 1 -14 35 8 112 0 0 -13 35 13 18 16 45 60 3 -46 -13 28 56 -13 41 30 -12 30 58 -14 40 9 113 0 0 -13 40 30 18 16 35 60 1 -45 -13 34 13 -13 46 47 -12 36 14 -14 45 28 114 0 0 -13 46 6 18 16 25 60 360 -45 -13 39 49 -13 52 24 -12 41 48 -14 51 6 115 0 0 -13 52 0 18 16 15 60 358 -44 -13 45 43 -13 58 18 -12 47 40 -14 57 3 116 0 0 -13 58 13 18 16 6 60 356 -43 -13 51 55 -14 4 31 -12 53 50 -15 3 18 117 0 0 -14 4 44 18 15 56 60 354 -42 -13 58 26 -14 11 2 -13 0 18 -15 9 51 118 0 0 -14 11 32 18 15 46 59 352 -42 -14 5 14 -14 17 51 -13 7 5 -15 16 42 119 0 0 -14 18 39 18 15 37 59 351 -41 -14 12 21 -14 24 58 -13 14 9 -15 23 52 120 0 0 -14 26 4 18 15 27 59 349 -40 -14 19 45 -14 32 23 -13 21 31 -15 31 20 121 0 0 -14 33 47 18 15 17 58 347 -39 -14 27 28 -14 40 6 -13 29 11 -15 39 5 122 0 0 -14 41 47 18 15 8 58 346 -39 -14 35 28 -14 48 6 -13 37 8 -15 47 8 123 0 0 -14 50 5 18 14 58 58 344 -38 -14 43 45 -14 56 25 -13 45 23 -15 55 29 124 0 0 -14 58 40 18 14 49 57 342 -37 -14 52 20 -15 5 0 -13 53 55 -16 4 8 125 0 0 -15 7 33 18 14 39 57 341 -36 -15 1 13 -15 13 53 -14 2 45 -16 13 4 126 0 0 -15 16 43 18 14 30 56 339 -35 -15 10 22 -15 23 3 -14 11 51 -16 22 17 127 0 0 -15 26 9 18 14 20 56 338 -34 -15 19 49 -15 32 31 -14 21 15 -16 31 47 128 0 0 -15 35 53 18 14 11 55 336 -34 -15 29 32 -15 42 15 -14 30 55 -16 41 35 129 0 0 -15 45 54 18 14 2 55 335 -33 -15 39 32 -15 52 16 -14 40 52 -16 51 39 130 0 0 -15 56 11 18 13 52 54 334 -32 -15 49 49 -16 2 33 -14 51 6 -17 2 0 131 0 0 -16 6 45 18 13 43 54 332 -31 -16 0 22 -16 13 7 -15 1 36 -17 12 37 132 0 0 -16 17 34 18 13 34 53 331 -30 -16 11 12 -16 23 57 -15 12 22 -17 23 31 133 0 0 -16 28 40 18 13 25 53 330 -29 -16 22 17 -16 35 4 -15 23 24 -17 34 41 134 0 0 -16 40 2 18 13 16 52 329 -28 -16 33 39 -16 46 26 -15 34 42 -17 46 7 135 0 0 -16 51 40 18 13 7 51 328 -28 -16 45 16 -16 58 4 -15 46 16 -17 57 48 136 0 0 -17 3 33 18 12 59 51 327 -27 -16 57 9 -17 9 57 -15 58 5 -18 9 46 137 0 0 -17 15 42 18 12 50 50 325 -26 -17 9 17 -17 22 6 -16 10 9 -18 21 58 138 0 0 -17 28 5 18 12 41 49 324 -25 -17 21 40 -17 34 31 -16 22 29 -18 34 26 139 0 0 -17 40 44 18 12 33 49 323 -24 -17 34 19 -17 47 10 -16 35 3 -18 47 9 140 0 0 -17 53 37 18 12 24 48 322 -23 -17 47 12 -18 0 3 -16 47 53 -19 0 7 141 0 0 -18 6 45 18 12 16 47 322 -22 -18 0 19 -18 13 12 -17 0 56 -19 13 19 142 0 0 -18 20 7 18 12 8 46 321 -21 -18 13 41 -18 26 34 -17 14 14 -19 26 46 143 0 0 -18 33 44 18 12 0 46 320 -20 -18 27 17 -18 40 11 -17 27 46 -19 40 26 144 0 0 -18 47 34 18 11 51 45 319 -20 -18 41 6 -18 54 1 -17 41 32 -19 54 21 145 0 0 -19 1 37 18 11 44 44 318 -19 -18 55 9 -19 8 5 -17 55 31 -20 8 29 146 0 0 -19 15 54 18 11 36 43 317 -18 -19 9 26 -19 22 23 -18 9 44 -20 22 50 147 0 0 -19 30 24 18 11 28 42 316 -17 -19 23 55 -19 36 53 -18 24 9 -20 37 25 148 0 0 -19 45 7 18 11 20 42 316 -16 -19 38 38 -19 51 36 -18 38 48 -20 52 12 149 0 0 -20 0 2 18 11 13 41 315 -15 -19 53 32 -20 6 32 -18 53 39 -21 7 11 150 0 0 -20 15 9 18 11 6 40 314 -14 -20 8 39 -20 21 39 -19 8 42 -21 22 23 151 0 0 -20 30 28 18 10 58 39 314 -13 -20 23 58 -20 36 59 -19 23 57 -21 37 47 152 0 0 -20 45 59 18 10 51 38 313 -12 -20 39 29 -20 52 31 -19 39 23 -21 53 23 153 0 0 -21 1 42 18 10 44 37 312 -11 -20 55 11 -21 8 13 -19 55 1 -22 9 9 154 0 0 -21 17 35 18 10 38 37 312 -10 -21 11 3 -21 24 7 -20 10 50 -22 25 7 155 0 0 -21 33 39 18 10 31 36 311 -9 -21 27 7 -21 40 12 -20 26 50 -22 41 15 156 0 0 -21 49 54 18 10 24 35 310 -8 -21 43 21 -21 56 26 -20 43 0 -22 57 34 157 0 0 -22 6 18 18 10 18 34 310 -7 -21 59 45 -22 12 51 -20 59 21 -23 14 3 158 0 0 -22 22 52 18 10 12 33 309 -7 -22 16 19 -22 29 26 -21 15 51 -23 30 41 159 0 0 -22 39 36 18 10 5 32 308 -6 -22 33 2 -22 46 10 -21 32 30 -23 47 29 160 0 0 -22 56 28 18 10 0 31 308 -5 -22 49 54 -23 3 3 -21 49 19 -24 4 26 161 0 0 -23 13 30 18 9 54 30 307 -4 -23 6 55 -23 20 5 -22 6 17 -24 21 31 162 0 0 -23 30 39 18 9 48 30 307 -3 -23 24 5 -23 37 15 -22 23 22 -24 38 45 163 0 0 -23 47 57 18 9 43 29 306 -2 -23 41 22 -23 54 33 -22 40 36 -24 56 7 164 0 0 -24 5 22 18 9 37 28 306 -1 -23 58 47 -24 11 58 -22 57 58 -25 13 36 Uncertainty in time = +/- 12 secs Prediction of 2012 Sep 25.0 Data for the target star ------------------------ * name: TYC 1297-01127-1 * constellation : Taurus * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 05 35 39.0580 DE: +16 18 32.127 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .027, .037 ) * V mag [mag]: 10.1 * B mag [mag]: 11.2 * Apparent position with proper motion RA(deg): 84.1076664267 DE(deg): 16.3156130732 * Equation of equinoxes (radians) : 0.000058647065658 * Diameter [mas]: 0 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (4041) Miyamotoyohko approx. diameter [km]: 20 approx. diameter ["]: .012 distance from Earth [AU]: 2.27700 * orbital information: orbit source: Preston date of fit: 2012 Jul 10 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 820 number of rejected observations: 17 time covered by the observations: 1947 Jun 15 - 2012 Jan 27 1 sigma uncertainty ellipse (major, minor, PA): 0.070, 0.039, 77° remarks: * orbital elements for (4041) Miyamotoyohko : Mean anomaly = 176.13793905 deg Arg. of pericenter = 156.76913712 deg Long. of node = 101.53893028 deg Inclination = 11.23019529 deg Eccentricity = 0.04979144 Semimajor axis = 3.01994827 AU Perihelion dist = 2.86958071 AU Mag: H = 11.13, G = 0.15 Epoch of elements : MJD 56247.76200000 TDT (2012 Nov 16.762) ------ occelmnt file for Occult BEGIN ----------------------------------- 2012 Nov 16 4041 Miyamotoyohko 18h 16.9m UT 10.1 5 35 39.058 16 18 32.13TYC 1297-01127-1 11.2 16.0 20 1.8 2.277 -1.613 2.03 113.4692 16.308 -97.99 -18.97 18.2815 -0.04359 -0.49570 -6.00759 0.52504 -0.00296 0.00051 2000 174.680204201211 9.00000156.769137101.538930 11.2301950.04979144 3.0199483 2.869580711.1 5.00.15 RATE 1.8780400 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.075 0.054 79 5.64 0.056 0 0 0-3 056195.0020121116_1127-1 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2012 Sep 25, 20:32 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org