IOTA/IOTA-ES occultation update for (1497) Tampere / HIP 5898 event on 2012 Oct 22, 17:12 UT Visible from Japan, China, India, Arabia, Africa Summary ------- On 2012 Oct 22 UT, the 14 km diameter asteroid (1497) Tampere will occult a 7.2 mag star in the constellation Pisces for observers along a path across Japan, China, India, Arabia, Africa. In the case of an occultation, the combined light of the asteroid and the star will drop by 8.4 mag to 15.6 mag (the magnitude of the asteroid) for at most 1.2 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: . The event at a glimpse ---------------------- * Rank: 23 * date and approx. time of event: 2012 Oct 22, 17:04 - 2012 Oct 22, 17:21 UT * geocentric midpoint of event [JD]: 2456223.21743333 * magnitude of target star: 7.2 * magnitude drop [mag]: 8.4 * estimated maximum duration [s]: 1.2 * Moon: 56 % sunlit, 74° distance * Sun: 171° distance * rough path description: Japan, China, India, Arabia, Africa Additional comments ------------------- close double star The occultation path -------------------- * approximate projected width [km]: 15 * 1 sigma uncertainty interval [path widths]: +/- 2.92 * 1 sigma uncertainty interval [seconds]: +/- 6.0 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .052 +/- .034) * 1 sigma uncertainty ellipse (major, minor, PA): ( .053", .032", 74° ) * approx speed of asteroid's shadow [km/s]: 11.1737 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of HIP 5898 by 1497 Tampere on 2012 Oct 22 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 6 0 0 0 34 57 17 21 51 9 80 0 0 39 8 0 30 47 1 3 33 0 6 26 7 0 0 0 49 25 17 21 49 10 80 -1 0 53 36 0 45 14 1 18 4 0 20 52 8 0 0 1 4 17 17 21 47 11 80 -3 1 8 29 1 0 6 1 32 59 0 35 41 9 0 0 1 19 35 17 21 45 12 80 -4 1 23 46 1 15 23 1 48 19 0 50 56 10 0 0 1 35 16 17 21 42 13 80 -5 1 39 28 1 31 4 2 4 3 1 6 35 11 0 0 1 51 22 17 21 40 14 80 -6 1 55 34 1 47 9 2 20 11 1 22 38 12 0 0 2 7 51 17 21 37 15 80 -7 2 12 4 2 3 38 2 36 43 1 39 4 13 0 0 2 24 44 17 21 34 16 80 -8 2 28 57 2 20 30 2 53 39 1 55 54 14 0 0 2 42 0 17 21 31 17 81 -9 2 46 13 2 37 46 3 10 58 2 13 7 15 0 0 2 59 39 17 21 28 18 81 -10 3 3 53 2 55 25 3 28 40 2 30 43 16 0 0 3 17 40 17 21 24 19 81 -11 3 21 55 3 13 26 3 46 44 2 48 42 17 0 0 3 36 4 17 21 21 20 81 -12 3 40 19 3 31 49 4 5 11 3 7 3 18 0 0 3 54 50 17 21 17 21 81 -13 3 59 6 3 50 35 4 24 0 3 25 46 19 0 0 4 13 58 17 21 13 22 81 -14 4 18 14 4 9 42 4 43 11 3 44 50 20 0 0 4 33 26 17 21 9 23 81 -15 4 37 43 4 29 10 5 2 43 4 4 16 21 0 0 4 53 16 17 21 4 24 81 -16 4 57 33 4 48 59 5 22 35 4 24 3 22 0 0 5 13 26 17 20 59 25 82 -17 5 17 44 5 9 9 5 42 49 4 44 10 23 0 0 5 33 57 17 20 55 26 82 -18 5 38 14 5 29 39 6 3 22 5 4 37 24 0 0 5 54 47 17 20 50 27 82 -19 5 59 5 5 50 29 6 24 15 5 25 25 25 0 0 6 15 56 17 20 45 28 82 -20 6 20 15 6 11 38 6 45 28 5 46 31 26 0 0 6 37 25 17 20 39 29 82 -21 6 41 44 6 33 6 7 6 59 6 7 56 27 0 0 6 59 12 17 20 34 30 83 -22 7 3 31 6 54 52 7 28 49 6 29 40 28 0 0 7 21 16 17 20 28 31 83 -23 7 25 36 7 16 57 7 50 57 6 51 42 29 0 0 7 43 39 17 20 22 32 83 -24 7 47 59 7 39 19 8 13 22 7 14 1 30 0 0 8 6 18 17 20 16 33 83 -25 8 10 39 8 1 58 8 36 5 7 36 38 31 0 0 8 29 15 17 20 10 34 84 -26 8 33 36 8 24 53 8 59 4 7 59 31 32 0 0 8 52 27 17 20 4 35 84 -27 8 56 48 8 48 5 9 22 19 8 22 40 33 0 0 9 15 55 17 19 57 36 84 -28 9 20 17 9 11 33 9 45 50 8 46 5 34 0 0 9 39 38 17 19 51 37 85 -29 9 44 0 9 35 15 10 9 36 9 9 46 35 0 0 10 3 35 17 19 44 38 85 -30 10 7 58 9 59 12 10 33 37 9 33 40 36 0 0 10 27 47 17 19 37 39 86 -31 10 32 10 10 23 24 10 57 51 9 57 49 37 0 0 10 52 12 17 19 30 40 86 -32 10 56 36 10 47 48 11 22 19 10 22 12 38 0 0 11 16 50 17 19 23 41 87 -33 11 21 14 11 12 26 11 47 0 10 46 47 39 0 0 11 41 40 17 19 15 42 87 -34 11 46 5 11 37 16 12 11 53 11 11 35 40 0 0 12 6 43 17 19 8 43 88 -35 12 11 8 12 2 18 12 36 58 11 36 34 41 0 0 12 31 56 17 19 0 44 88 -36 12 36 21 12 27 31 13 2 14 12 1 45 42 0 0 12 57 20 17 18 52 45 89 -37 13 1 46 12 52 55 13 27 40 12 27 7 43 0 0 13 22 54 17 18 45 46 90 -38 13 27 20 13 18 28 13 53 17 12 52 38 44 0 0 13 48 38 17 18 37 47 90 -39 13 53 4 13 44 11 14 19 3 13 18 19 45 0 0 14 14 30 17 18 28 48 91 -40 14 18 57 14 10 3 14 44 57 13 44 9 46 0 0 14 40 30 17 18 20 49 92 -41 14 44 57 14 36 3 15 11 0 14 10 8 47 0 0 15 6 38 17 18 12 50 92 -42 15 11 6 15 2 11 15 37 10 14 36 14 48 0 0 15 32 53 17 18 4 51 93 -43 15 37 21 15 28 26 16 3 27 15 2 26 49 0 0 15 59 14 17 17 55 51 94 -44 16 3 42 15 54 47 16 29 50 15 28 46 50 0 0 16 25 41 17 17 46 52 95 -45 16 30 9 16 21 13 16 56 19 15 55 11 51 0 0 16 52 13 17 17 38 53 96 -45 16 56 41 16 47 45 17 22 52 16 21 41 52 0 0 17 18 49 17 17 29 54 97 -46 17 23 18 17 14 21 17 49 30 16 48 15 53 0 0 17 45 29 17 17 20 55 98 -47 17 49 58 17 41 0 18 16 12 17 14 53 54 0 0 18 12 12 17 17 11 56 99 -48 18 16 41 18 7 43 18 42 56 17 41 35 55 0 0 18 38 57 17 17 2 57 100 -49 18 43 26 18 34 28 19 9 43 18 8 18 56 0 0 19 5 44 17 16 53 57 102 -50 19 10 14 19 1 15 19 36 31 18 35 4 57 0 0 19 32 32 17 16 44 58 103 -51 19 37 2 19 28 3 20 3 20 19 1 51 58 0 0 19 59 21 17 16 35 59 104 -52 20 3 51 19 54 51 20 30 10 19 28 38 59 0 0 20 26 9 17 16 25 60 106 -52 20 30 39 20 21 39 20 56 59 19 55 26 60 0 0 20 52 56 17 16 16 60 107 -53 20 57 27 20 48 26 21 23 48 20 22 12 61 0 0 21 19 42 17 16 7 61 109 -54 21 24 13 21 15 12 21 50 34 20 48 57 62 0 0 21 46 26 17 15 57 62 111 -55 21 50 56 21 41 56 22 17 19 21 15 40 63 0 0 22 13 7 17 15 48 63 112 -56 22 17 38 22 8 37 22 44 0 21 42 21 64 0 0 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26 68 148 -65 28 45 32 28 36 33 29 11 50 28 10 21 79 0 0 29 5 39 17 13 16 69 151 -65 29 10 9 29 1 10 29 36 26 28 35 0 80 0 0 29 30 4 17 13 7 69 154 -65 29 34 34 29 25 35 30 0 50 28 59 26 81 0 0 29 54 17 17 12 58 69 157 -66 29 58 46 29 49 48 30 25 1 29 23 40 82 0 0 30 18 16 17 12 49 68 160 -66 30 22 45 30 13 47 30 48 58 29 47 41 83 0 0 30 42 2 17 12 40 68 163 -66 30 46 31 30 37 33 31 12 43 30 11 28 84 0 0 31 5 34 17 12 31 68 165 -66 31 10 2 31 1 6 31 36 13 30 35 2 85 0 0 31 28 52 17 12 21 68 168 -67 31 33 20 31 24 24 31 59 29 30 58 22 86 0 0 31 51 55 17 12 13 68 171 -67 31 56 23 31 47 27 32 22 30 31 21 27 87 0 0 32 14 43 17 12 4 68 173 -67 32 19 10 32 10 15 32 45 16 31 44 17 88 0 0 32 37 16 17 11 55 67 176 -67 32 41 43 32 32 49 33 7 47 32 6 52 89 0 0 32 59 33 17 11 46 67 178 -67 33 4 0 32 55 6 33 30 1 32 29 11 90 0 0 33 21 34 17 11 37 67 181 -67 33 26 1 33 17 8 33 52 0 32 51 15 91 0 0 33 43 19 17 11 29 66 183 -67 33 47 45 33 38 53 34 13 43 33 13 2 92 0 0 34 4 47 17 11 20 66 185 -67 34 9 13 34 0 21 34 35 9 33 34 33 93 0 0 34 25 59 17 11 12 65 188 -66 34 30 24 34 21 33 34 56 18 33 55 47 94 0 0 34 46 53 17 11 3 65 190 -66 34 51 18 34 42 28 35 17 10 34 16 44 95 0 0 35 7 30 17 10 55 64 192 -66 35 11 55 35 3 6 35 37 44 34 37 23 96 0 0 35 27 50 17 10 47 64 194 -66 35 32 14 35 23 26 35 58 1 34 57 45 97 0 0 35 47 52 17 10 38 63 196 -66 35 52 16 35 43 28 36 18 0 35 17 50 98 0 0 36 7 36 17 10 30 63 198 -65 36 11 59 36 3 12 36 37 41 35 37 37 99 0 0 36 27 1 17 10 22 62 199 -65 36 31 24 36 22 38 36 57 4 35 57 5 100 0 0 36 46 9 17 10 14 62 201 -65 36 50 31 36 41 46 37 16 8 36 16 15 101 0 0 37 4 58 17 10 6 61 203 -64 37 9 20 37 0 35 37 34 54 36 35 7 102 0 0 37 23 28 17 9 59 60 205 -64 37 27 50 37 19 6 37 53 22 36 53 40 103 0 0 37 41 39 17 9 51 60 206 -63 37 46 1 37 37 18 38 11 30 37 11 55 104 0 0 37 59 32 17 9 43 59 208 -63 38 3 53 37 55 11 38 29 20 37 29 50 105 0 0 38 17 5 17 9 36 59 209 -63 38 21 26 38 12 45 38 46 50 37 47 27 106 0 0 38 34 20 17 9 29 58 211 -62 38 38 40 38 30 0 39 4 1 38 4 44 107 0 0 38 51 15 17 9 21 57 212 -62 38 55 34 38 46 55 39 20 53 38 21 43 108 0 0 39 7 51 17 9 14 57 213 -61 39 12 10 39 3 32 39 37 26 38 38 21 109 0 0 39 24 7 17 9 7 56 215 -61 39 28 26 39 19 48 39 53 39 38 54 41 110 0 0 39 40 4 17 9 0 55 216 -60 39 44 22 39 35 46 40 9 33 39 10 41 111 0 0 39 55 41 17 8 53 55 217 -60 39 59 59 39 51 24 40 25 8 39 26 22 112 0 0 40 10 59 17 8 46 54 218 -59 40 15 17 40 6 42 40 40 22 39 41 43 113 0 0 40 25 58 17 8 39 54 220 -58 40 30 14 40 21 41 40 55 17 39 56 44 114 0 0 40 40 36 17 8 33 53 221 -58 40 44 53 40 36 20 41 9 53 40 11 26 115 0 0 40 54 55 17 8 26 52 222 -57 40 59 11 40 50 39 41 24 9 40 25 48 116 0 0 41 8 54 17 8 20 52 223 -57 41 13 10 41 4 39 41 38 5 40 39 50 117 0 0 41 22 34 17 8 13 51 224 -56 41 26 49 41 18 19 41 51 41 40 53 32 118 0 0 41 35 54 17 8 7 50 225 -56 41 40 8 41 31 39 42 4 58 41 6 55 119 0 0 41 48 54 17 8 1 49 226 -55 41 53 8 41 44 39 42 17 55 41 19 58 120 0 0 42 1 34 17 7 55 49 227 -54 42 5 48 41 57 20 42 30 32 41 32 41 121 0 0 42 13 54 17 7 48 48 228 -54 42 18 8 42 9 41 42 42 50 41 45 5 122 0 0 42 25 55 17 7 43 47 229 -53 42 30 8 42 21 42 42 54 48 41 57 9 123 0 0 42 37 36 17 7 37 47 230 -53 42 41 49 42 33 24 43 6 26 42 8 53 124 0 0 42 48 58 17 7 31 46 231 -52 42 53 10 42 44 46 43 17 44 42 20 17 125 0 0 42 59 59 17 7 25 45 232 -51 43 4 11 42 55 48 43 28 43 42 31 21 126 0 0 43 10 42 17 7 20 45 233 -51 43 14 53 43 6 30 43 39 23 42 42 6 127 0 0 43 21 4 17 7 14 44 234 -50 43 25 15 43 16 53 43 49 42 42 52 31 128 0 0 43 31 7 17 7 9 43 235 -49 43 35 17 43 26 56 43 59 43 43 2 37 129 0 0 43 40 50 17 7 3 43 236 -49 43 45 0 43 36 40 44 9 23 43 12 22 130 0 0 43 50 14 17 6 58 42 237 -48 43 54 23 43 46 4 44 18 44 43 21 49 131 0 0 43 59 18 17 6 53 41 238 -48 44 3 27 43 55 9 44 27 46 43 30 55 132 0 0 44 8 3 17 6 48 41 239 -47 44 12 12 44 3 54 44 36 28 43 39 42 133 0 0 44 16 28 17 6 43 40 240 -46 44 20 36 44 12 19 44 44 51 43 48 10 134 0 0 44 24 34 17 6 38 39 241 -46 44 28 42 44 20 25 44 52 55 43 56 18 135 0 0 44 32 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-36 45 51 36 45 43 27 46 15 27 45 19 40 150 0 0 45 50 30 17 5 31 29 254 -35 45 54 35 45 46 26 46 18 25 45 22 41 151 0 0 45 53 10 17 5 28 28 255 -35 45 57 15 45 49 6 46 21 4 45 25 21 152 0 0 45 55 31 17 5 24 27 255 -34 45 59 35 45 51 27 46 23 24 45 27 43 153 0 0 45 57 33 17 5 21 27 256 -33 46 1 37 45 53 29 46 25 26 45 29 46 154 0 0 45 59 16 17 5 18 26 257 -33 46 3 20 45 55 12 46 27 8 45 31 30 155 0 0 46 0 40 17 5 15 25 258 -32 46 4 44 45 56 36 46 28 31 45 32 54 156 0 0 46 1 45 17 5 12 25 258 -31 46 5 49 45 57 42 46 29 36 45 34 0 157 0 0 46 2 31 17 5 8 24 259 -31 46 6 35 45 58 28 46 30 22 45 34 46 158 0 0 46 2 58 17 5 6 23 260 -30 46 7 2 45 58 55 46 30 49 45 35 14 159 0 0 46 3 6 17 5 3 23 261 -29 46 7 10 45 59 3 46 30 56 45 35 22 160 0 0 46 2 55 17 5 0 22 261 -29 46 6 59 45 58 52 46 30 45 45 35 11 161 0 0 46 2 25 17 4 57 21 262 -28 46 6 29 45 58 22 46 30 15 45 34 41 162 0 0 46 1 36 17 4 55 20 263 -27 46 5 40 45 57 32 46 29 26 45 33 51 163 0 0 46 0 28 17 4 52 20 264 -27 46 4 32 45 56 24 46 28 18 45 32 43 164 0 0 45 59 0 17 4 50 19 264 -26 46 3 4 45 54 56 46 26 51 45 31 15 165 0 0 45 57 14 17 4 47 18 265 -25 46 1 18 45 53 10 46 25 5 45 29 28 166 0 0 45 55 8 17 4 45 18 266 -25 45 59 12 45 51 4 46 22 59 45 27 21 167 0 0 45 52 42 17 4 43 17 267 -24 45 56 47 45 48 38 46 20 35 45 24 56 168 0 0 45 49 58 17 4 41 16 267 -23 45 54 2 45 45 54 46 17 51 45 22 10 169 0 0 45 46 54 17 4 39 16 268 -23 45 50 59 45 42 50 46 14 48 45 19 6 170 0 0 45 43 31 17 4 37 15 269 -22 45 47 35 45 39 27 46 11 25 45 15 42 171 0 0 45 39 48 17 4 35 14 270 -21 45 43 53 45 35 44 46 7 44 45 11 58 172 0 0 45 35 46 17 4 33 14 270 -21 45 39 51 45 31 41 46 3 43 45 7 55 173 0 0 45 31 24 17 4 31 13 271 -20 45 35 29 45 27 19 45 59 22 45 3 32 174 0 0 45 26 43 17 4 29 12 272 -19 45 30 48 45 22 38 45 54 42 44 58 49 175 0 0 45 21 42 17 4 28 12 272 -19 45 25 47 45 17 36 45 49 42 44 53 46 176 0 0 45 16 21 17 4 26 11 273 -18 45 20 26 45 12 15 45 44 23 44 48 24 177 0 0 45 10 40 17 4 25 10 274 -17 45 14 46 45 6 34 45 38 43 44 42 42 178 0 0 45 4 39 17 4 24 9 275 -16 45 8 45 45 0 33 45 32 44 44 36 39 179 0 0 44 58 19 17 4 23 9 275 -16 45 2 25 44 54 12 45 26 25 44 30 17 180 0 0 44 51 38 17 4 21 8 276 -15 44 55 44 44 47 31 45 19 47 44 23 34 -179 0 0 44 44 37 17 4 20 7 277 -14 44 48 44 44 40 30 45 12 48 44 16 32 -178 0 0 44 37 16 17 4 20 7 277 -14 44 41 23 44 33 9 45 5 29 44 9 8 -177 0 0 44 29 34 17 4 19 6 278 -13 44 33 42 44 25 27 44 57 49 44 1 25 -176 0 0 44 21 33 17 4 18 5 279 -12 44 25 40 44 17 25 44 49 50 43 53 21 -175 0 0 44 13 10 17 4 17 4 279 -11 44 17 18 44 9 2 44 41 30 43 44 56 -174 0 0 44 4 27 17 4 17 4 280 -11 44 8 36 44 0 19 44 32 49 43 36 11 -173 0 0 43 55 24 17 4 16 3 281 -10 43 59 33 43 51 15 44 23 48 43 27 5 -172 0 0 43 46 0 17 4 16 2 282 -9 43 50 9 43 41 51 44 14 26 43 17 39 -171 0 0 43 36 15 17 4 16 1 282 -9 43 40 24 43 32 5 44 4 44 43 7 51 -170 0 0 43 26 9 17 4 16 1 283 -8 43 30 19 43 21 59 43 54 41 42 57 42 Uncertainty in time = +/- 6 secs Prediction of 2012 Oct 8.0 Data for the target star ------------------------ * name: HIP 5898 * constellation : Pisces * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 01 15 46.6707 DE: +09 47 05.929 * position source: mpos:HIP2 pm:HIP2 plx:HIP2 * standard error: RA,DE ["]: ( .027, .013 ) * V mag [mag]: 7.2 * B mag [mag]: 7.6 * Diameter [mas]: 0 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (1497) Tampere approx. diameter [km]: 14 approx. diameter ["]: .011 distance from Earth [AU]: 1.76800 * orbital information: orbit source: Preston date of fit: 2012 Oct 07 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 1117 number of rejected observations: 45 time covered by the observations: 1933 Sep 17 - 2012 Sep 24 1 sigma uncertainty ellipse (major, minor, PA): 0.046, 0.029, 68° remarks: * orbital elements for (1497) Tampere : Mean anomaly = 48.34803535 deg Arg. of pericenter = 28.33587894 deg Long. of node = 300.37562851 deg Inclination = 1.05981161 deg Eccentricity = 0.07808470 Semimajor axis = 2.89533858 AU Perihelion dist = 2.66925694 AU Mag: H = 11.38, G = 0.15 Epoch of elements : MJD 56222.71700000 TDT (2012 Oct 22.717) ------ occelmnt file for Occult BEGIN ----------------------------------- 2012 Oct 22 1497 Tampere 17h 13.1m UT 7.2 1 15 46.671 9 47 5.93HIP 5898 7.6 15.6 14 1.2 1.768 -1.960 -12.03 89.1314 9.789 -82.17 -11.37 17.2184 -0.13931 0.33582 -5.82478 -2.41802 0.00087 0.00017 2000 47.80447920121020.00000 28.335879300.375629 1.0598120.07808470 2.8953386 2.669256911.9 5.00.15 RATE 2.0005750 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.053 0.032 74 3.92 0.032 0 0-3-1 056208.0020121022___5898 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2012 Oct 07, 19:17 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org