IOTA/IOTA-ES occultation update for (998) Bodea / TYC 2847-00023-1 event on 2012 Dec 03, 15:10 UT Visible from Japan, Taiwan, SE Asia Summary ------- On 2012 Dec 03 UT, the 31 km diameter asteroid (998) Bodea will occult a 11.3 mag star in the constellation Perseus for observers along a path across Japan, Taiwan, SE Asia. In the case of an occultation, the combined light of the asteroid and the star will drop by 4.5 mag to 15.8 mag (the magnitude of the asteroid) for at most 3.0 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: 44 * date and approx. time of event: 2012 Dec 03, 15:00 - 2012 Dec 03, 15:19 UT * geocentric midpoint of event [JD]: 2456265.1320375 * magnitude of target star: 11.3 * magnitude drop [mag]: 4.5 * estimated maximum duration [s]: 3.0 * Moon: 79 % sunlit, 74° distance * Sun: 153° distance * rough path description: Japan, Taiwan, SE Asia The occultation path -------------------- * approximate projected width [km]: 33 * 1 sigma uncertainty interval [path widths]: +/- 1.47 * 1 sigma uncertainty interval [seconds]: +/- 4.3 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .046 +/- .033) * 1 sigma uncertainty ellipse (major, minor, PA): ( .046", .033", 81° ) * approx speed of asteroid's shadow [km/s]: 10.5463 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 2847-00023-1 by 998 Bodea on 2012 Dec 3 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 ' " Longitude Longitude Longitude Longitude 74 11 55 -46 0 0 15 19 28 1 22 -6 73 57 43 74 26 6 73 16 0 75 7 51 74 47 31 -45 0 0 15 19 27 2 22 -7 74 33 34 75 1 28 73 52 33 75 42 31 75 22 36 -44 0 0 15 19 27 3 22 -8 75 8 53 75 36 20 74 28 33 76 16 42 75 57 14 -43 0 0 15 19 26 4 21 -9 75 43 43 76 10 44 75 4 1 76 50 29 76 31 26 -42 0 0 15 19 25 5 21 -10 76 18 8 76 44 45 75 39 1 77 23 54 77 5 16 -41 0 0 15 19 24 6 20 -11 76 52 9 77 18 23 76 13 37 77 56 59 77 38 47 -40 0 0 15 19 23 7 20 -12 77 25 51 77 51 43 76 47 50 78 29 47 78 12 0 -39 0 0 15 19 21 8 20 -13 77 59 14 78 24 46 77 21 44 79 2 21 78 44 58 -38 0 0 15 19 19 9 19 -14 78 32 22 78 57 35 77 55 20 79 34 41 79 17 43 -37 0 0 15 19 17 11 19 -15 79 5 16 79 30 11 78 28 41 80 6 51 79 50 17 -36 0 0 15 19 15 12 19 -16 79 37 59 80 2 36 79 1 49 80 38 51 80 22 43 -35 0 0 15 19 12 13 18 -17 80 10 32 80 34 54 79 34 46 81 10 45 80 55 0 -34 0 0 15 19 9 14 18 -18 80 42 57 81 7 4 80 7 34 81 42 33 81 27 13 -33 0 0 15 19 6 15 18 -19 81 15 17 81 39 9 80 40 14 82 14 17 81 59 21 -32 0 0 15 19 3 16 17 -20 81 47 32 82 11 11 81 12 49 82 45 59 82 31 27 -31 0 0 15 18 59 17 17 -21 82 19 44 82 43 10 81 45 20 83 17 40 83 3 32 -30 0 0 15 18 56 18 17 -22 82 51 55 83 15 9 82 17 48 83 49 22 83 35 38 -29 0 0 15 18 52 19 16 -24 83 24 6 83 47 10 82 50 16 84 21 6 84 7 45 -28 0 0 15 18 48 20 16 -25 83 56 19 84 19 12 83 22 44 84 52 54 84 39 56 -27 0 0 15 18 43 21 16 -26 84 28 35 84 51 18 83 55 13 85 24 46 85 12 12 -26 0 0 15 18 38 22 16 -27 85 0 55 85 23 30 84 27 47 85 56 45 85 44 34 -25 0 0 15 18 34 24 15 -28 85 33 21 85 55 47 85 0 25 86 28 50 86 17 3 -24 0 0 15 18 28 25 15 -29 86 5 53 86 28 13 85 33 9 87 1 5 86 49 40 -23 0 0 15 18 23 26 15 -30 86 38 35 87 0 47 86 6 0 87 33 29 87 22 28 -22 0 0 15 18 18 27 14 -31 87 11 25 87 33 31 86 39 0 88 6 5 87 55 27 -21 0 0 15 18 12 28 14 -32 87 44 27 88 6 27 87 12 10 88 38 52 88 28 38 -20 0 0 15 18 6 29 14 -33 88 17 41 88 39 36 87 45 31 89 11 54 89 2 3 -19 0 0 15 18 0 30 13 -34 88 51 8 89 12 59 88 19 5 89 45 10 89 35 43 -18 0 0 15 17 53 31 13 -35 89 24 50 89 46 37 88 52 53 90 18 43 90 9 39 -17 0 0 15 17 47 32 13 -36 89 58 48 90 20 32 89 26 56 90 52 33 90 43 53 -16 0 0 15 17 40 33 12 -37 90 33 3 90 54 44 90 1 15 91 26 42 91 18 26 -15 0 0 15 17 32 34 12 -38 91 7 37 91 29 16 90 35 52 92 1 11 91 53 19 -14 0 0 15 17 25 35 12 -39 91 42 31 92 4 8 91 10 48 92 36 1 92 28 34 -13 0 0 15 17 18 37 11 -40 92 17 46 92 39 23 91 46 5 93 11 14 93 4 12 -12 0 0 15 17 10 38 11 -41 92 53 24 93 15 0 92 21 43 93 46 51 93 40 14 -11 0 0 15 17 2 39 11 -43 93 29 26 93 51 3 92 57 45 94 22 54 94 16 42 -10 0 0 15 16 54 40 10 -44 94 5 54 94 27 31 93 34 12 94 59 24 94 53 38 - 9 0 0 15 16 45 41 10 -45 94 42 49 95 4 28 94 11 5 95 36 23 95 31 3 - 8 0 0 15 16 36 42 9 -46 95 20 13 95 41 54 94 48 27 96 13 53 96 8 59 - 7 0 0 15 16 28 43 9 -47 95 58 8 96 19 52 95 26 17 96 51 54 96 47 28 - 6 0 0 15 16 19 44 8 -48 96 36 35 96 58 22 96 4 40 97 30 30 97 26 31 - 5 0 0 15 16 9 45 8 -49 97 15 36 97 37 27 96 43 35 98 9 41 98 6 10 - 4 0 0 15 16 0 46 7 -50 97 55 13 98 17 8 97 23 5 98 49 29 98 46 28 - 3 0 0 15 15 50 47 7 -52 98 35 28 98 57 29 98 3 13 99 29 58 99 27 26 - 2 0 0 15 15 40 48 6 -53 99 16 23 99 38 30 98 43 59 100 11 8 100 9 6 - 1 0 0 15 15 30 49 5 -54 99 58 0 100 20 14 99 25 27 100 53 2 100 51 32 0 0 0 15 15 19 50 5 -55 100 40 22 101 2 43 100 7 38 101 35 43 101 34 45 1 0 0 15 15 9 51 4 -56 101 23 31 101 46 1 100 50 35 102 19 13 Latitude Latitude Latitude Latitude 102 0 0 1 34 32 15 15 3 52 4 -57 1 49 52 1 19 9 2 34 40 0 33 38 103 0 0 2 55 3 15 14 48 53 2 -58 3 10 7 2 39 55 3 54 11 1 55 12 104 0 0 4 13 25 15 14 33 55 1 -60 4 28 14 3 58 32 5 11 34 3 14 34 105 0 0 5 29 38 15 14 18 56 360 -61 5 44 13 5 15 1 6 26 52 4 31 46 106 0 0 6 43 46 15 14 4 57 359 -63 6 58 7 6 29 22 7 40 5 5 46 50 107 0 0 7 55 48 15 13 49 58 357 -64 8 9 55 7 41 38 8 51 14 6 59 47 108 0 0 9 5 47 15 13 34 60 356 -66 9 19 41 8 51 50 10 0 22 8 10 38 109 0 0 10 13 44 15 13 20 61 354 -67 10 27 26 10 0 0 11 7 31 9 19 26 110 0 0 11 19 43 15 13 6 62 352 -69 11 33 12 11 6 11 12 12 42 10 26 13 111 0 0 12 23 44 15 12 52 62 351 -70 12 37 2 12 10 24 13 15 58 11 31 2 112 0 0 13 25 51 15 12 38 63 349 -71 13 38 57 13 12 42 14 17 20 12 33 54 113 0 0 14 26 4 15 12 24 64 347 -73 14 39 0 14 13 7 15 16 51 13 34 52 114 0 0 15 24 28 15 12 10 65 344 -74 15 37 13 15 11 41 16 14 34 14 33 57 115 0 0 16 21 4 15 11 57 65 342 -75 16 33 39 16 8 27 17 10 30 15 31 14 116 0 0 17 15 54 15 11 43 66 340 -76 17 28 19 17 3 28 18 4 42 16 26 44 117 0 0 18 9 2 15 11 30 66 338 -77 18 21 17 17 56 44 18 57 12 17 20 29 118 0 0 19 0 28 15 11 17 67 335 -78 19 12 34 18 48 20 19 48 3 18 12 32 119 0 0 19 50 16 15 11 5 67 333 -80 20 2 14 19 38 17 20 37 16 19 2 55 120 0 0 20 38 28 15 10 52 67 330 -81 20 50 17 20 26 37 21 24 55 19 51 41 121 0 0 21 25 6 15 10 40 68 328 -82 21 36 47 21 13 24 22 11 1 20 38 52 122 0 0 22 10 12 15 10 27 68 325 -82 22 21 45 21 58 38 22 55 36 21 24 30 123 0 0 22 53 49 15 10 15 68 323 -83 23 5 15 22 42 23 23 38 43 22 8 37 124 0 0 23 35 59 15 10 4 68 321 -84 23 47 17 23 24 40 24 20 24 22 51 17 125 0 0 24 16 43 15 9 52 68 318 -85 24 27 54 24 5 31 25 0 41 23 32 29 126 0 0 24 56 5 15 9 41 68 316 -85 25 7 9 24 45 0 25 39 36 24 12 18 127 0 0 25 34 5 15 9 29 68 314 -85 25 45 3 25 23 7 26 17 10 24 50 45 128 0 0 26 10 47 15 9 18 67 312 -85 26 21 38 25 59 55 26 53 27 25 27 52 129 0 0 26 46 11 15 9 7 67 310 -85 26 56 56 26 35 25 27 28 27 26 3 40 130 0 0 27 20 19 15 8 57 67 308 -85 27 30 59 27 9 39 28 2 12 26 38 12 131 0 0 27 53 14 15 8 46 66 306 -84 28 3 48 27 42 40 28 34 45 27 11 30 132 0 0 28 24 58 15 8 36 66 304 -83 28 35 25 28 14 29 29 6 7 27 43 35 133 0 0 28 55 30 15 8 26 66 303 -83 29 5 53 28 45 7 29 36 19 28 14 29 134 0 0 29 24 55 15 8 16 65 301 -82 29 35 12 29 14 36 30 5 23 28 44 13 135 0 0 29 53 12 15 8 6 65 300 -81 30 3 24 29 42 58 30 33 21 29 12 49 136 0 0 30 20 23 15 7 56 64 299 -80 30 30 31 30 10 14 31 0 14 29 40 19 137 0 0 30 46 30 15 7 46 64 298 -80 30 56 34 30 36 26 31 26 4 30 6 44 138 0 0 31 11 35 15 7 37 63 297 -79 31 21 34 31 1 35 31 50 52 30 32 6 139 0 0 31 35 38 15 7 28 63 296 -78 31 45 33 31 25 42 32 14 38 30 56 25 140 0 0 31 58 40 15 7 19 62 295 -77 32 8 31 31 48 48 32 37 26 31 19 44 141 0 0 32 20 44 15 7 10 61 294 -76 32 30 31 32 10 56 32 59 14 31 42 2 142 0 0 32 41 50 15 7 1 61 294 -75 32 51 33 32 32 5 33 20 6 32 3 22 143 0 0 33 1 59 15 6 52 60 293 -75 33 11 39 32 52 17 33 40 2 32 23 45 144 0 0 33 21 12 15 6 44 60 293 -74 33 30 49 33 11 34 33 59 2 32 43 11 145 0 0 33 39 30 15 6 35 59 292 -73 33 49 4 33 29 56 34 17 8 33 1 42 146 0 0 33 56 55 15 6 27 58 292 -72 34 6 26 33 47 23 34 34 21 33 19 18 147 0 0 34 13 27 15 6 19 58 291 -71 34 22 55 34 3 58 34 50 42 33 36 1 148 0 0 34 29 7 15 6 11 57 291 -71 34 38 32 34 19 40 35 6 12 33 51 52 149 0 0 34 43 55 15 6 3 56 291 -70 34 53 19 34 34 32 35 20 50 34 6 50 150 0 0 34 57 54 15 5 55 56 291 -69 35 7 14 34 48 32 35 34 39 34 20 58 151 0 0 35 11 2 15 5 47 55 290 -68 35 20 21 35 1 43 35 47 39 34 34 15 152 0 0 35 23 21 15 5 40 54 290 -67 35 32 38 35 14 4 35 59 50 34 46 43 153 0 0 35 34 52 15 5 32 54 290 -67 35 44 7 35 25 37 36 11 14 34 58 21 154 0 0 35 45 35 15 5 25 53 290 -66 35 54 48 35 36 22 36 21 50 35 9 12 155 0 0 35 55 31 15 5 17 52 290 -65 36 4 42 35 46 19 36 31 39 35 19 14 156 0 0 36 4 40 15 5 10 52 290 -64 36 13 49 35 55 30 36 40 42 35 28 29 157 0 0 36 13 2 15 5 3 51 290 -64 36 22 11 36 3 54 36 48 59 35 36 57 158 0 0 36 20 39 15 4 56 50 290 -63 36 29 46 36 11 31 36 56 30 35 44 38 159 0 0 36 27 30 15 4 49 50 291 -62 36 36 36 36 18 23 37 3 17 35 51 34 160 0 0 36 33 35 15 4 42 49 291 -61 36 42 40 36 24 30 37 9 18 35 57 43 161 0 0 36 38 56 15 4 36 48 291 -61 36 48 0 36 29 52 37 14 36 36 3 7 162 0 0 36 43 32 15 4 29 47 291 -60 36 52 35 36 34 28 37 19 9 36 7 46 163 0 0 36 47 23 15 4 23 47 291 -59 36 56 26 36 38 20 37 22 57 36 11 40 164 0 0 36 50 30 15 4 16 46 292 -58 36 59 32 36 41 27 37 26 3 36 14 49 165 0 0 36 52 53 15 4 10 45 292 -58 37 1 55 36 43 51 37 28 24 36 17 13 166 0 0 36 54 31 15 4 3 45 292 -57 37 3 33 36 45 29 37 30 2 36 18 52 167 0 0 36 55 26 15 3 57 44 292 -56 37 4 27 36 46 24 37 30 56 36 19 47 168 0 0 36 55 36 15 3 51 43 293 -55 37 4 37 36 46 34 37 31 6 36 19 57 169 0 0 36 55 2 15 3 45 42 293 -55 37 4 4 36 46 0 37 30 33 36 19 22 170 0 0 36 53 44 15 3 39 42 293 -54 37 2 46 36 44 41 37 29 16 36 18 3 171 0 0 36 51 41 15 3 33 41 294 -53 37 0 44 36 42 39 37 27 15 36 15 59 172 0 0 36 48 55 15 3 27 40 294 -52 36 57 57 36 39 51 37 24 30 36 13 10 173 0 0 36 45 23 15 3 22 40 294 -52 36 54 26 36 36 19 37 21 1 36 9 35 174 0 0 36 41 6 15 3 16 39 295 -51 36 50 11 36 32 1 37 16 48 36 5 15 175 0 0 36 36 4 15 3 10 38 295 -50 36 45 10 36 26 58 37 11 50 36 0 9 176 0 0 36 30 17 15 3 5 37 295 -49 36 39 24 36 21 10 37 6 7 35 54 18 177 0 0 36 23 44 15 2 59 37 296 -48 36 32 51 36 14 35 36 59 38 35 47 39 178 0 0 36 16 24 15 2 54 36 296 -48 36 25 33 36 7 14 36 52 24 35 40 14 179 0 0 36 8 17 15 2 49 35 297 -47 36 17 28 35 59 6 36 44 24 35 32 2 180 0 0 35 59 24 15 2 44 34 297 -46 36 8 36 35 50 11 36 35 36 35 23 1 -179 0 0 35 49 42 15 2 38 33 297 -45 35 58 56 35 40 27 36 26 2 35 13 12 -178 0 0 35 39 12 15 2 33 33 298 -45 35 48 28 35 29 55 36 15 39 35 2 34 -177 0 0 35 27 53 15 2 28 32 298 -44 35 37 11 35 18 34 36 4 28 34 51 7 -176 0 0 35 15 43 15 2 23 31 299 -43 35 25 4 35 6 22 35 52 28 34 38 48 -175 0 0 35 2 44 15 2 19 30 299 -42 35 12 7 34 53 20 35 39 38 34 25 39 -174 0 0 34 48 53 15 2 14 29 300 -41 34 58 18 34 39 26 35 25 57 34 11 38 -173 0 0 34 34 9 15 2 9 29 300 -41 34 43 37 34 24 40 35 11 24 33 56 43 -172 0 0 34 18 32 15 2 4 28 301 -40 34 28 4 34 9 1 34 55 59 33 40 55 -171 0 0 34 2 2 15 2 0 27 301 -39 34 11 36 33 52 27 34 39 40 33 24 12 -170 0 0 33 44 36 15 1 56 26 301 -38 33 54 13 33 34 57 34 22 27 33 6 33 -169 0 0 33 26 13 15 1 51 25 302 -37 33 35 54 33 16 31 34 4 18 32 47 57 -168 0 0 33 6 53 15 1 47 24 302 -36 33 16 38 32 57 8 33 45 12 32 28 22 -167 0 0 32 46 34 15 1 43 24 303 -36 32 56 23 32 36 45 33 25 9 32 7 48 -166 0 0 32 25 16 15 1 39 23 303 -35 32 35 8 32 15 22 33 4 6 31 46 13 -165 0 0 32 2 55 15 1 35 22 304 -34 32 12 52 31 52 58 32 42 2 31 23 36 -164 0 0 31 39 32 15 1 31 21 304 -33 31 49 33 31 29 30 32 18 56 30 59 55 -163 0 0 31 15 4 15 1 27 20 305 -32 31 25 10 31 4 57 31 54 46 30 35 9 -162 0 0 30 49 30 15 1 24 19 305 -31 30 59 41 30 39 19 31 29 32 30 9 16 -161 0 0 30 22 49 15 1 20 18 306 -30 30 33 5 30 12 32 31 3 10 29 42 14 -160 0 0 29 54 57 15 1 17 17 306 -29 30 5 19 29 44 35 30 35 40 29 14 1 -159 0 0 29 25 55 15 1 14 16 307 -28 29 36 22 29 15 27 30 6 59 28 44 36 -158 0 0 28 55 39 15 1 11 15 307 -28 29 6 11 28 45 5 29 37 6 28 13 57 -157 0 0 28 24 7 15 1 8 14 307 -27 28 34 46 28 13 27 29 5 58 27 42 1 -156 0 0 27 51 18 15 1 5 13 308 -26 28 2 3 27 40 32 28 33 34 27 8 46 -155 0 0 27 17 9 15 1 2 12 308 -25 27 28 0 27 6 16 27 59 51 26 34 10 -154 0 0 26 41 37 15 1 0 11 309 -24 26 52 36 26 30 37 27 24 46 25 58 10 -153 0 0 26 4 41 15 0 58 10 309 -23 26 15 47 25 53 33 26 48 19 25 20 45 -152 0 0 25 26 17 15 0 55 9 310 -22 25 37 31 25 15 2 26 10 25 24 41 51 -151 0 0 24 46 23 15 0 54 8 310 -21 24 57 45 24 35 0 25 31 2 24 1 25 -150 0 0 24 4 57 15 0 52 7 310 -19 24 16 27 23 53 25 24 50 8 23 19 25 -149 0 0 23 21 54 15 0 51 5 311 -18 23 33 33 23 10 14 24 7 39 22 35 48 -148 0 0 22 37 13 15 0 49 4 311 -17 22 49 0 22 25 24 23 23 33 21 50 31 -147 0 0 21 50 49 15 0 49 3 312 -16 22 2 46 21 38 50 22 37 47 21 3 29 -146 0 0 21 2 40 15 0 48 2 312 -15 21 14 47 20 50 32 .. .. .. 20 14 41 -145 0 0 20 12 42 15 0 48 1 312 -14 20 25 0 20 0 23 .. .. .. 19 24 1 Uncertainty in time = +/- 5 secs Prediction of 2012 Dec 3.0 Data for the target star ------------------------ * name: TYC 2847-00023-1 * constellation : Perseus * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 03 04 43.5437 DE: +39 20 27.286 * position source: mpos:UCAC4 pm:UCAC4 * standard error: RA,DE ["]: ( .025, .020 ) * V mag [mag]: 11.3 * B mag [mag]: 11.2 * Diameter [mas]: 0 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (998) Bodea approx. diameter [km]: 31 approx. diameter ["]: .025 distance from Earth [AU]: 1.68800 * orbital information: orbit source: Preston date of fit: 2012 Nov 29 source of used astrometry: FASTT TMO MPC (via Astdys) number of used observations: 756 number of rejected observations: 11 time covered by the observations: 1923 Aug 08 - 2012 Nov 26 1 sigma uncertainty ellipse (major, minor, PA): 0.039, 0.026, 78° remarks: * orbital elements for (998) Bodea : Mean anomaly = 30.66334645 deg Arg. of pericenter = 72.95039278 deg Long. of node = 301.24244559 deg Inclination = 15.48121703 deg Eccentricity = 0.21035679 Semimajor axis = 3.12416242 AU Perihelion dist = 2.46697365 AU Mag: H = 11.47, G = 0.15 Epoch of elements : MJD 56264.63200000 TDT (2012 Dec 03.632) ------ occelmnt file for Occult BEGIN ----------------------------------- 2012 Dec 3 998 Bodea 15h 10.1m UT 11.3 3 4 43.544 39 20 27.29TYC 2847-00023-1 11.2 15.8 31 3.0 1.688 -1.791 -23.00 105.7981 39.347 -50.02 -22.21 15.1689 0.27793 -0.25137 -3.99238 -4.41531 0.00218 -0.00144 2000 29.83660020121129.00000 72.950393301.242446 15.4812170.21035679 3.1241624 2.466973611.9 5.00.15 RATE 1.7848580 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.046 0.033 81 2.47 0.037 0 0-3-4 056264.0020121203_0023-1 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2012 Nov 29, 22:30 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org