IOTA/IOTA-ES occultation update for (775) Lumiere / TYC 2421-00638-1 event on 2012 Nov 25, 19:04 UT Visible from Japan, China, India, Africa Summary ------- On 2012 Nov 25 UT, the 29 km diameter asteroid (775) Lumiere will occult a 10.9 mag star in the constellation Auriga for observers along a path across Japan, China, India, Africa. In the case of an occultation, the combined light of the asteroid and the star will drop by 3.6 mag to 14.5 mag (the magnitude of the asteroid) for at most 3.5 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: 47 * date and approx. time of event: 2012 Nov 25, 18:52 - 2012 Nov 25, 19:17 UT * geocentric midpoint of event [JD]: 2456257.2944 * magnitude of target star: 10.9 * magnitude drop [mag]: 3.6 * estimated maximum duration [s]: 3.5 * Moon: 93 % sunlit, 62° distance * Sun: 148° distance * rough path description: Japan, China, India, Africa The occultation path -------------------- * approximate projected width [km]: 29 * 1 sigma uncertainty interval [path widths]: +/- 1.36 * 1 sigma uncertainty interval [seconds]: +/- 6.0 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .041 +/- .028) * 1 sigma uncertainty ellipse (major, minor, PA): ( .041", .028", 98° ) * approx speed of asteroid's shadow [km/s]: 8.0718 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 2421-00638-1 by 775 Lumiere on 2012 Nov 25 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 16 0 0 - 6 17 33 19 17 5 1 59 -33 - 6 8 19 - 6 26 47 - 5 43 15 - 6 51 54 17 0 0 - 5 41 20 19 17 4 2 59 -34 - 5 32 7 - 5 50 34 - 5 7 2 - 6 15 41 18 0 0 - 5 5 6 19 17 4 3 59 -35 - 4 55 52 - 5 14 19 - 4 30 48 - 5 39 26 19 0 0 - 4 28 51 19 17 3 4 59 -36 - 4 19 38 - 4 38 5 - 3 54 34 - 5 3 11 20 0 0 - 3 52 38 19 17 1 5 59 -37 - 3 43 25 - 4 1 51 - 3 18 21 - 4 26 57 21 0 0 - 3 16 26 19 17 0 6 58 -38 - 3 7 13 - 3 25 39 - 2 42 11 - 3 50 44 22 0 0 - 2 40 18 19 16 58 8 58 -40 - 2 31 5 - 2 49 30 - 2 6 3 - 3 14 34 23 0 0 - 2 4 14 19 16 55 9 58 -41 - 1 55 1 - 2 13 26 - 1 30 1 - 2 38 29 24 0 0 - 1 28 15 19 16 53 10 58 -42 - 1 19 3 - 1 37 26 - 0 54 3 - 2 2 28 25 0 0 - 0 52 22 19 16 50 11 58 -43 - 0 43 11 - 1 1 33 - 0 18 13 - 1 26 34 26 0 0 - 0 16 37 19 16 47 12 58 -44 - 0 7 27 - 0 25 48 0 17 30 - 0 50 47 27 0 0 0 18 59 19 16 43 13 58 -45 0 28 9 0 9 49 0 53 4 - 0 15 8 28 0 0 0 54 26 19 16 39 14 58 -46 1 3 36 0 45 17 1 28 29 0 20 22 29 0 0 1 29 43 19 16 35 16 58 -48 1 38 51 1 20 34 2 3 43 0 55 41 30 0 0 2 4 48 19 16 31 17 58 -49 2 13 56 1 55 40 2 38 45 1 30 49 31 0 0 2 39 40 19 16 26 18 58 -50 2 48 47 2 30 33 3 13 35 2 5 44 32 0 0 3 14 20 19 16 21 19 58 -51 3 23 26 3 5 13 3 48 11 2 40 27 33 0 0 3 48 45 19 16 16 20 58 -52 3 57 50 3 39 39 4 22 32 3 14 55 34 0 0 4 22 55 19 16 11 21 59 -53 4 31 59 4 13 50 4 56 39 3 49 8 35 0 0 4 56 49 19 16 5 22 59 -54 5 5 52 4 47 45 5 30 29 4 23 6 36 0 0 5 30 26 19 15 59 24 59 -56 5 39 28 5 21 24 6 4 3 4 56 47 37 0 0 6 3 46 19 15 52 25 59 -57 6 12 47 5 54 44 6 37 19 5 30 11 38 0 0 6 36 48 19 15 46 26 59 -58 6 45 48 6 27 47 7 10 17 6 3 17 39 0 0 7 9 30 19 15 39 27 59 -59 7 18 29 7 0 31 7 42 55 6 36 3 40 0 0 7 41 53 19 15 32 28 59 -60 7 50 51 7 32 55 8 15 14 7 8 31 41 0 0 8 13 56 19 15 25 29 59 -61 8 22 53 8 4 59 8 47 13 7 40 38 42 0 0 8 45 38 19 15 17 30 59 -62 8 54 34 8 36 42 9 18 50 8 12 24 43 0 0 9 16 59 19 15 10 31 59 -63 9 25 53 9 8 4 9 50 6 8 43 49 44 0 0 9 47 57 19 15 2 32 60 -64 9 56 51 9 39 4 10 21 0 9 14 53 45 0 0 10 18 33 19 14 54 33 60 -65 10 27 25 10 9 41 10 51 32 9 45 33 46 0 0 10 48 46 19 14 45 34 60 -66 10 57 37 10 39 55 11 21 40 10 15 51 47 0 0 11 18 36 19 14 37 36 60 -68 11 27 25 11 9 46 11 51 25 10 45 45 48 0 0 11 48 1 19 14 28 37 60 -69 11 56 49 11 39 13 12 20 45 11 15 15 49 0 0 12 17 3 19 14 20 38 60 -70 12 25 49 12 8 16 12 49 42 11 44 22 50 0 0 12 45 39 19 14 11 39 60 -71 12 54 24 12 36 53 13 18 13 12 13 3 51 0 0 13 13 50 19 14 1 40 61 -72 13 22 35 13 5 6 13 46 20 12 41 19 52 0 0 13 41 36 19 13 52 41 61 -73 13 50 19 13 32 53 14 14 1 13 9 10 53 0 0 14 8 56 19 13 43 42 61 -74 14 17 38 14 0 15 14 41 16 13 36 35 54 0 0 14 35 51 19 13 33 43 61 -75 14 44 31 14 27 10 15 8 5 14 3 34 55 0 0 15 2 18 19 13 23 44 61 -76 15 10 57 14 53 39 15 34 28 14 30 7 56 0 0 15 28 20 19 13 13 45 62 -77 15 36 57 15 19 42 16 0 25 14 56 13 57 0 0 15 53 54 19 13 3 46 62 -78 16 2 31 15 45 18 16 25 54 15 21 53 58 0 0 16 19 2 19 12 53 47 62 -79 16 27 37 16 10 27 16 50 57 15 47 6 59 0 0 16 43 43 19 12 43 48 62 -80 16 52 16 16 35 9 17 15 33 16 11 51 60 0 0 17 7 56 19 12 33 49 62 -81 17 16 28 16 59 24 17 39 41 16 36 9 61 0 0 17 31 42 19 12 22 50 62 -82 17 40 13 17 23 11 18 3 22 17 0 0 62 0 0 17 55 0 19 12 12 51 63 -83 18 3 30 17 46 31 18 26 36 17 23 23 63 0 0 18 17 51 19 12 1 52 63 -84 18 26 19 18 9 22 18 49 22 17 46 19 64 0 0 18 40 14 19 11 50 53 63 -85 18 48 41 18 31 47 19 11 40 18 8 47 65 0 0 19 2 9 19 11 40 54 63 -86 19 10 35 18 53 43 19 33 30 18 30 47 66 0 0 19 23 36 19 11 29 55 63 -86 19 32 1 19 15 12 19 54 53 18 52 19 67 0 0 19 44 36 19 11 18 56 64 -87 19 52 59 19 36 12 20 15 47 19 13 22 68 0 0 20 5 7 19 11 7 57 64 -88 20 13 29 19 56 45 20 36 14 19 33 58 69 0 0 20 25 10 19 10 56 58 64 -88 20 33 31 20 16 49 20 56 13 19 54 6 70 0 0 20 44 46 19 10 44 59 64 -88 20 53 5 20 36 26 21 15 44 20 13 46 71 0 0 21 3 53 19 10 33 60 64 -88 21 12 11 20 55 34 21 34 47 20 32 58 72 0 0 21 22 32 19 10 22 60 65 -87 21 30 50 21 14 15 21 53 22 20 51 41 73 0 0 21 40 44 19 10 11 61 65 -86 21 49 0 21 32 27 22 11 29 21 9 57 74 0 0 21 58 27 19 9 59 62 65 -85 22 6 42 21 50 12 22 29 8 21 27 44 75 0 0 22 15 42 19 9 48 63 65 -84 22 23 56 22 7 28 22 46 19 21 45 4 76 0 0 22 32 29 19 9 36 64 65 -83 22 40 42 22 24 17 23 3 2 22 1 55 77 0 0 22 48 49 19 9 25 65 65 -83 22 57 1 22 40 37 23 19 18 22 18 19 78 0 0 23 4 41 19 9 13 66 65 -82 23 12 51 22 56 30 23 35 6 22 34 14 79 0 0 23 20 4 19 9 2 67 65 -81 23 28 14 23 11 55 23 50 26 22 49 42 80 0 0 23 35 0 19 8 50 68 65 -80 23 43 9 23 26 52 24 5 18 23 4 42 81 0 0 23 49 29 19 8 39 69 65 -79 23 57 37 23 41 21 24 19 43 23 19 13 82 0 0 24 3 29 19 8 27 69 65 -78 24 11 36 23 55 23 24 33 40 23 33 18 83 0 0 24 17 3 19 8 15 70 65 -77 24 25 8 24 8 57 24 47 10 23 46 54 84 0 0 24 30 8 19 8 4 71 65 -76 24 38 13 24 22 3 25 0 12 24 0 3 85 0 0 24 42 46 19 7 52 72 65 -75 24 50 50 24 34 42 25 12 47 24 12 45 86 0 0 24 54 57 19 7 40 73 65 -75 25 3 0 24 46 54 25 24 55 24 24 58 87 0 0 25 6 40 19 7 29 74 65 -74 25 14 43 24 58 38 25 36 35 24 36 45 88 0 0 25 17 57 19 7 17 75 64 -73 25 25 58 25 9 55 25 47 48 24 48 4 89 0 0 25 28 46 19 7 5 76 64 -72 25 36 47 25 20 45 25 58 34 24 58 56 90 0 0 25 39 7 19 6 53 76 63 -71 25 47 8 25 31 7 26 8 54 25 9 20 91 0 0 25 49 2 19 6 42 77 63 -70 25 57 2 25 41 3 26 18 46 25 19 18 92 0 0 25 58 30 19 6 30 78 62 -69 26 6 29 25 50 31 26 28 11 25 28 48 93 0 0 26 7 31 19 6 18 79 61 -68 26 15 29 25 59 33 26 37 10 25 37 51 94 0 0 26 16 5 19 6 6 80 60 -68 26 24 3 26 8 7 26 45 41 25 46 27 95 0 0 26 24 12 19 5 55 80 58 -67 26 32 9 26 16 15 26 53 46 25 54 37 96 0 0 26 31 53 19 5 43 81 57 -66 26 39 49 26 23 56 27 1 25 26 2 19 97 0 0 26 39 6 19 5 31 82 54 -65 26 47 2 26 31 10 27 8 37 26 9 35 98 0 0 26 45 53 19 5 19 83 52 -64 26 53 49 26 37 58 27 15 22 26 16 24 99 0 0 26 52 14 19 5 8 83 48 -63 27 0 9 26 44 19 27 21 41 26 22 46 100 0 0 26 58 8 19 4 56 84 44 -62 27 6 3 26 50 13 27 27 33 26 28 42 101 0 0 27 3 35 19 4 44 85 38 -62 27 11 30 26 55 41 27 32 59 26 34 11 102 0 0 27 8 37 19 4 32 85 30 -61 27 16 30 27 0 43 27 37 59 26 39 13 103 0 0 27 13 11 19 4 21 85 21 -60 27 21 5 27 5 18 27 42 32 26 43 49 104 0 0 27 17 19 19 4 9 86 10 -59 27 25 13 27 9 26 27 46 39 26 47 58 105 0 0 27 21 1 19 3 57 86 357 -58 27 28 54 27 13 8 27 50 20 26 51 41 106 0 0 27 24 17 19 3 46 86 345 -57 27 32 10 27 16 24 27 53 35 26 54 58 107 0 0 27 27 6 19 3 34 85 333 -57 27 34 59 27 19 14 27 56 24 26 57 48 108 0 0 27 29 29 19 3 22 85 324 -56 27 37 22 27 21 37 27 58 46 27 0 12 109 0 0 27 31 26 19 3 11 85 316 -55 27 39 18 27 23 34 28 0 42 27 2 9 110 0 0 27 32 57 19 2 59 84 310 -54 27 40 49 27 25 5 28 2 12 27 3 40 111 0 0 27 34 1 19 2 47 83 305 -53 27 41 53 27 26 9 28 3 16 27 4 45 112 0 0 27 34 39 19 2 36 83 301 -52 27 42 31 27 26 47 28 3 54 27 5 23 113 0 0 27 34 51 19 2 24 82 299 -51 27 42 43 27 26 59 28 4 6 27 5 35 114 0 0 27 34 37 19 2 13 81 296 -51 27 42 29 27 26 45 28 3 52 27 5 20 115 0 0 27 33 56 19 2 1 81 294 -50 27 41 48 27 26 4 28 3 12 27 4 40 116 0 0 27 32 49 19 1 50 80 293 -49 27 40 41 27 24 57 28 2 5 27 3 33 117 0 0 27 31 16 19 1 38 79 292 -48 27 39 8 27 23 24 28 0 32 27 1 59 118 0 0 27 29 17 19 1 27 78 291 -47 27 37 9 27 21 24 27 58 33 26 59 59 119 0 0 27 26 51 19 1 15 77 290 -46 27 34 43 27 18 58 27 56 8 26 57 33 120 0 0 27 23 59 19 1 4 77 289 -46 27 31 52 27 16 6 27 53 17 26 54 40 121 0 0 27 20 40 19 0 52 76 289 -45 27 28 33 27 12 47 27 49 59 26 51 20 122 0 0 27 16 55 19 0 41 75 288 -44 27 24 49 27 9 2 27 46 16 26 47 34 123 0 0 27 12 44 19 0 30 74 288 -43 27 20 38 27 4 50 27 42 5 26 43 22 124 0 0 27 8 6 19 0 18 73 288 -42 27 16 0 27 0 12 27 37 29 26 38 43 125 0 0 27 3 2 19 0 7 73 288 -41 27 10 56 26 55 7 27 32 26 26 33 37 126 0 0 26 57 31 18 59 56 72 288 -40 27 5 25 26 49 36 27 26 56 26 28 4 127 0 0 26 51 33 18 59 45 71 288 -40 26 59 28 26 43 38 27 21 0 26 22 5 128 0 0 26 45 9 18 59 33 70 288 -39 26 53 4 26 37 13 27 14 37 26 15 39 129 0 0 26 38 17 18 59 22 69 288 -38 26 46 13 26 30 21 27 7 48 26 8 46 130 0 0 26 30 59 18 59 11 68 288 -37 26 38 56 26 23 2 27 0 32 26 1 25 131 0 0 26 23 14 18 59 0 68 288 -36 26 31 11 26 15 17 26 52 49 25 53 38 132 0 0 26 15 2 18 58 49 67 288 -35 26 23 0 26 7 4 26 44 39 25 45 24 133 0 0 26 6 23 18 58 38 66 288 -34 26 14 21 25 58 24 26 36 2 25 36 43 134 0 0 25 57 17 18 58 27 65 288 -34 26 5 16 25 49 18 26 26 58 25 27 34 135 0 0 25 47 43 18 58 16 64 288 -33 25 55 43 25 39 43 26 17 27 25 17 58 136 0 0 25 37 42 18 58 5 63 288 -32 25 45 43 25 29 42 26 7 29 25 7 54 137 0 0 25 27 14 18 57 55 62 289 -31 25 35 15 25 19 13 25 57 4 24 57 23 138 0 0 25 16 19 18 57 44 62 289 -30 25 24 21 25 8 16 25 46 11 24 46 25 139 0 0 25 4 55 18 57 33 61 289 -29 25 12 58 24 56 52 25 34 51 24 34 59 140 0 0 24 53 4 18 57 22 60 289 -28 25 1 8 24 45 1 25 23 3 24 23 5 141 0 0 24 40 46 18 57 12 59 290 -27 24 48 50 24 32 41 25 10 48 24 10 43 142 0 0 24 27 59 18 57 1 58 290 -26 24 36 5 24 19 54 24 58 5 23 57 53 143 0 0 24 14 45 18 56 51 57 290 -26 24 22 51 24 6 39 24 44 54 23 44 35 144 0 0 24 1 3 18 56 40 56 290 -25 24 9 10 23 52 55 24 31 15 23 30 49 145 0 0 23 46 52 18 56 30 55 291 -24 23 55 1 23 38 44 24 17 8 23 16 35 146 0 0 23 32 14 18 56 20 54 291 -23 23 40 23 23 24 5 24 2 33 23 1 53 147 0 0 23 17 7 18 56 9 53 291 -22 23 25 17 23 8 57 23 47 30 22 46 43 148 0 0 23 1 32 18 55 59 53 291 -21 23 9 44 22 53 21 23 31 59 22 31 4 149 0 0 22 45 29 18 55 49 52 292 -20 22 53 41 22 37 16 23 16 0 22 14 57 150 0 0 22 28 57 18 55 39 51 292 -19 22 37 11 22 20 44 22 59 32 21 58 21 151 0 0 22 11 57 18 55 29 50 292 -18 22 20 12 22 3 42 22 42 36 21 41 16 152 0 0 21 54 28 18 55 19 49 292 -17 22 2 44 21 46 12 22 25 12 21 23 43 153 0 0 21 36 31 18 55 10 48 293 -16 21 44 48 21 28 14 22 7 19 21 5 42 154 0 0 21 18 5 18 55 0 47 293 -15 21 26 23 21 9 47 21 48 57 20 47 11 155 0 0 20 59 10 18 54 51 46 293 -14 21 7 29 20 50 51 21 30 7 20 28 12 156 0 0 20 39 47 18 54 41 45 294 -14 20 48 7 20 31 26 21 10 48 20 8 44 157 0 0 20 19 55 18 54 32 44 294 -13 20 28 17 20 11 33 20 51 1 19 48 47 158 0 0 19 59 34 18 54 23 43 294 -12 20 7 57 19 51 11 20 30 45 19 28 22 159 0 0 19 38 45 18 54 14 42 294 -11 19 47 9 19 30 20 20 10 0 19 7 28 160 0 0 19 17 26 18 54 5 41 295 -10 19 25 52 19 9 1 19 48 47 18 46 5 161 0 0 18 55 40 18 53 56 40 295 -9 19 4 6 18 47 13 19 27 5 18 24 13 162 0 0 18 33 24 18 53 47 39 295 -8 18 41 52 18 24 56 19 4 54 18 1 53 163 0 0 18 10 40 18 53 38 38 295 -7 18 19 10 18 2 10 18 42 15 17 39 4 164 0 0 17 47 27 18 53 30 37 296 -6 17 55 58 17 38 56 18 19 7 17 15 46 165 0 0 17 23 46 18 53 22 36 296 -5 17 32 19 17 15 14 17 55 31 16 52 0 166 0 0 16 59 37 18 53 14 35 296 -4 17 8 11 16 51 3 17 31 27 16 27 45 167 0 0 16 34 59 18 53 6 34 296 -3 16 43 34 16 26 24 17 6 55 16 3 3 168 0 0 16 9 54 18 52 58 33 297 -2 16 18 30 16 1 17 16 41 54 15 37 52 169 0 0 15 44 20 18 52 50 32 297 -1 15 52 58 15 35 42 16 16 26 15 12 13 Uncertainty in time = +/- 7 secs Prediction of 2012 Nov 16.0 Data for the target star ------------------------ * name: TYC 2421-00638-1 * constellation : Auriga * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 06 22 48.8651 DE: +30 51 54.518 * position source: mpos:UCAC4 pm:UCAC4 * standard error: RA,DE ["]: ( .021, .021 ) * V mag [mag]: 10.9 * B mag [mag]: 11.2 * Diameter [mas]: 0 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (775) Lumiere approx. diameter [km]: 29 approx. diameter ["]: .021 distance from Earth [AU]: 1.92000 * orbital information: orbit source: Preston date of fit: 2012 Nov 16 source of used astrometry: FASTT TMO MPC (via Astdys) number of used observations: 1030 number of rejected observations: 36 time covered by the observations: 1930 Mar 26 - 2012 Oct 31 1 sigma uncertainty ellipse (major, minor, PA): 0.035, 0.019, 101° remarks: * orbital elements for (775) Lumiere : Mean anomaly = 341.88245232 deg Arg. of pericenter = 167.25887543 deg Long. of node = 297.77361303 deg Inclination = 9.28454208 deg Eccentricity = 0.07336540 Semimajor axis = 3.01430340 AU Perihelion dist = 2.79315782 AU Mag: H = 10.17, G = 0.15 Epoch of elements : MJD 56256.79500000 TDT (2012 Nov 25.795) ------ occelmnt file for Occult BEGIN ----------------------------------- 2012 Nov 25 775 Lumiere 19h 3.9m UT 10.9 6 22 48.865 30 51 54.52TYC 2421-00638-1 11.2 14.5 29 3.5 1.920 -1.618 -1.46 104.5943 30.865 -109.18 -20.93 19.0656 0.00446 -0.06372 -4.54485 -0.31762 -0.00306 -0.00054 2000 340.60273820121119.00000167.258875297.773613 9.2845420.07336540 3.0143034 2.793157810.2 5.00.15 RATE 1.8833170 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.041 0.028 98 2.36 0.028 0 0 1-2 056247.0020121125_0638-1 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2012 Nov 16, 08:53 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org