IOTA/IOTA-ES occultation update for (1296) Andree / TYC 1305-00208-1 event on 2012 Nov 18, 15:43 UT Visible from New Zealand Summary ------- On 2012 Nov 18 UT, the 26 km diameter asteroid (1296) Andree will occult a 10.3 mag star in the constellation Taurus for observers along a path across New Zealand. In the case of an occultation, the combined light of the asteroid and the star will drop by 4.1 mag to 14.4 mag (the magnitude of the asteroid) for at most 4.3 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: UCAC. The event at a glimpse ---------------------- * Rank: 52 * date and approx. time of event: 2012 Nov 18, 15:38 - 2012 Nov 18, 15:51 UT * geocentric midpoint of event [JD]: 2456250.155375 * magnitude of target star: 10.3 * magnitude drop [mag]: 4.1 * estimated maximum duration [s]: 4.3 * Moon: 29 % sunlit, 141° distance * Sun: 153° distance * rough path description: New Zealand The occultation path -------------------- * approximate projected width [km]: 60 * 1 sigma uncertainty interval [path widths]: +/- 1.23 * 1 sigma uncertainty interval [seconds]: +/- 6.5 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .049 +/- .035) * 1 sigma uncertainty ellipse (major, minor, PA): ( .049", .035", 90° ) * approx speed of asteroid's shadow [km/s]: 5.9834 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 1305-00208-1 by 1296 Andree on 2012 Nov 18 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 135 58 3 -69 0 0 15 51 18 0 10 -1 135 10 38 136 45 51 ... .. .. 138 45 11 136 32 8 -68 0 0 15 51 17 2 10 -2 135 46 27 137 18 11 ... .. .. 139 13 8 137 9 38 -67 0 0 15 51 16 3 9 -3 136 25 30 137 54 8 ... .. .. 139 45 11 137 50 17 -66 0 0 15 51 14 4 8 -3 137 7 30 138 33 23 135 23 37 140 20 58 138 33 51 -65 0 0 15 51 10 5 8 -4 137 52 18 139 15 43 136 11 23 141 0 12 139 20 10 -64 0 0 15 51 6 6 7 -5 138 39 43 140 0 57 137 1 28 141 42 41 140 9 9 -63 0 0 15 51 2 7 6 -6 139 29 39 140 48 57 137 53 46 142 28 15 141 0 40 -62 0 0 15 50 56 8 6 -7 140 22 2 141 39 36 138 48 15 143 16 45 141 54 40 -61 0 0 15 50 49 9 5 -8 141 16 48 142 32 50 139 44 53 144 8 6 142 51 7 -60 0 0 15 50 42 10 4 -8 142 13 55 143 28 37 140 43 38 145 2 14 143 50 0 -59 0 0 15 50 33 11 3 -9 143 13 23 144 26 56 141 44 31 145 59 7 144 51 20 -58 0 0 15 50 24 12 2 -10 144 15 13 145 27 46 142 47 34 146 58 45 145 55 8 -57 0 0 15 50 13 13 1 -10 145 19 26 146 31 10 143 52 49 148 1 9 147 1 28 -56 0 0 15 50 2 14 0 -11 146 26 6 147 37 10 145 0 19 149 6 22 148 10 24 -55 0 0 15 49 49 15 359 -12 147 35 17 148 45 51 146 10 10 150 14 29 149 22 3 -54 0 0 15 49 35 16 358 -12 148 47 6 149 57 20 147 22 26 151 25 36 150 36 31 -53 0 0 15 49 21 17 357 -13 150 1 39 151 11 43 148 37 16 152 39 50 151 53 58 -52 0 0 15 49 5 18 355 -13 151 19 7 152 29 10 149 54 48 153 57 23 153 14 36 -51 0 0 15 48 47 19 354 -14 152 39 40 153 49 54 151 15 13 155 18 26 154 38 38 -50 0 0 15 48 29 20 353 -14 154 3 31 155 14 8 152 38 42 156 43 16 156 6 21 -49 0 0 15 48 9 20 351 -14 155 30 56 156 42 10 154 5 31 158 12 12 157 38 5 -48 0 0 15 47 48 21 350 -15 157 2 16 158 14 21 155 35 58 159 45 37 159 14 16 -47 0 0 15 47 25 22 348 -15 158 37 54 159 51 7 157 10 23 161 24 1 160 55 23 -46 0 0 15 47 1 23 347 -15 160 18 18 161 33 0 158 49 12 163 8 3 162 42 6 -45 0 0 15 46 34 23 345 -15 162 4 6 163 20 42 160 32 59 164 58 28 164 35 14 -44 0 0 15 46 6 24 343 -15 163 56 3 165 15 6 162 22 22 166 56 21 166 35 51 -43 0 0 15 45 36 25 341 -14 165 55 11 167 17 19 164 18 13 169 3 5 Latitude Latitude Latitude Latitude 167 0 0 -42 48 28 15 45 30 25 341 -14 -42 28 59 -43 8 15 -41 42 10 -43 58 12 168 0 0 -42 20 31 15 45 15 25 340 -14 -42 1 16 -42 40 2 -41 15 1 -43 29 17 169 0 0 -41 53 31 15 45 0 25 339 -14 -41 34 31 -42 12 48 -40 48 49 -43 1 24 170 0 0 -41 27 30 15 44 45 25 338 -14 -41 8 43 -41 46 32 -40 23 31 -42 34 32 171 0 0 -41 2 25 15 44 29 25 337 -13 -40 43 50 -41 21 15 -39 59 7 -42 8 40 172 0 0 -40 38 17 15 44 14 25 336 -13 -40 19 54 -40 56 55 -39 35 38 -41 43 48 173 0 0 -40 15 5 15 43 59 25 335 -13 -39 56 53 -40 33 31 -39 13 3 -41 19 54 174 0 0 -39 52 49 15 43 44 25 334 -13 -39 34 47 -40 11 4 -38 51 20 -40 56 59 175 0 0 -39 31 28 15 43 29 25 333 -12 -39 13 36 -39 49 33 -38 30 31 -40 35 1 176 0 0 -39 11 2 15 43 14 25 332 -12 -38 53 19 -39 28 57 -38 10 35 -40 14 1 177 0 0 -38 51 30 15 43 0 25 331 -11 -38 33 55 -39 9 17 -37 51 32 -39 53 57 178 0 0 -38 32 52 15 42 45 25 330 -11 -38 15 26 -38 50 31 -37 33 21 -39 34 49 179 0 0 -38 15 8 15 42 30 25 329 -11 -37 57 50 -38 32 39 -37 16 2 -39 16 38 180 0 0 -37 58 18 15 42 16 25 328 -10 -37 41 6 -38 15 42 -36 59 35 -38 59 22 -179 0 0 -37 42 22 15 42 1 25 327 -10 -37 25 16 -37 59 39 -36 44 0 -38 43 1 -178 0 0 -37 27 18 15 41 47 25 326 -9 -37 10 19 -37 44 29 -36 29 16 -38 27 35 -177 0 0 -37 13 8 15 41 33 24 325 -9 -36 56 14 -37 30 13 -36 15 24 -38 13 4 -176 0 0 -36 59 50 15 41 19 24 324 -8 -36 43 2 -37 16 50 -36 2 24 -37 59 28 -175 0 0 -36 47 26 15 41 5 24 323 -8 -36 30 42 -37 4 21 -35 50 14 -37 46 46 -174 0 0 -36 35 54 15 40 52 24 322 -7 -36 19 14 -36 52 44 -35 38 57 -37 34 58 -173 0 0 -36 25 15 15 40 38 23 321 -7 -36 8 38 -36 42 1 -35 28 30 -37 24 4 -172 0 0 -36 15 28 15 40 25 23 321 -6 -35 58 55 -36 32 11 -35 18 55 -37 14 5 -171 0 0 -36 6 34 15 40 12 22 320 -5 -35 50 4 -36 23 14 -35 10 10 -37 4 59 -170 0 0 -35 58 32 15 39 59 22 319 -5 -35 42 5 -36 15 9 -35 2 18 -36 56 48 -169 0 0 -35 51 23 15 39 47 22 318 -4 -35 34 58 -36 7 58 -34 55 16 -36 49 30 -168 0 0 -35 45 6 15 39 35 21 317 -4 -35 28 43 -36 1 39 -34 49 6 -36 43 7 -167 0 0 -35 39 42 15 39 23 21 317 -3 -35 23 21 -35 56 14 -34 43 47 -36 37 37 -166 0 0 -35 35 11 15 39 11 20 316 -2 -35 18 51 -35 51 41 -34 39 20 -36 33 2 -165 0 0 -35 31 33 15 38 59 20 315 -2 -35 15 14 -35 48 2 -34 35 44 -36 29 20 -164 0 0 -35 28 48 15 38 48 19 314 -1 -35 12 29 -35 45 17 -34 33 0 -36 26 33 -163 0 0 -35 26 55 15 38 37 19 313 0 -35 10 37 -35 43 24 -34 31 8 -36 24 41 Uncertainty in time = +/- 7 secs Prediction of 2012 Nov 16.0 Data for the target star ------------------------ * name: TYC 1305-00208-1 * constellation : Taurus * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 05 29 53.8055 DE: +20 16 45.488 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .018, .021 ) * V mag [mag]: 10.3 * B mag [mag]: 10.3 * Diameter [mas]: 0 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (1296) Andree approx. diameter [km]: 26 approx. diameter ["]: .030 distance from Earth [AU]: 1.18300 * orbital information: orbit source: Preston date of fit: 2012 Oct 25 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 1030 number of rejected observations: 55 time covered by the observations: 1925 Oct 09 - 2012 Oct 17 1 sigma uncertainty ellipse (major, minor, PA): 0.046, 0.028, 90° remarks: * orbital elements for (1296) Andree : Mean anomaly = 335.48096156 deg Arg. of pericenter = 236.56873177 deg Long. of node = 227.02785789 deg Inclination = 4.10721013 deg Eccentricity = 0.14313069 Semimajor axis = 2.41825952 AU Perihelion dist = 2.07213237 AU Mag: H = 11.61, G = 0.15 Epoch of elements : MJD 56249.65500000 TDT (2012 Nov 18.655) ------ occelmnt file for Occult BEGIN ----------------------------------- 2012 Nov 18 1296 Andree 15h 43.7m UT 10.3 5 29 53.805 20 16 45.49TYC 1305-00208-1 10.3 14.4 26 4.3 1.183 -1.662 -9.19 148.4517 20.280 -59.60 -19.42 15.7290 0.32882 -0.83906 -3.14302 -1.23567 -0.00245 0.00013 2000 332.950487201211 9.00000236.568732227.027858 4.1072100.14313069 2.4182595 2.072132411.7 5.00.15 RATE 2.6208960 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.049 0.035 90 2.23 0.037 0 0 5-2 056247.0020121118_0208-1 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2012 Oct 25, 21:34 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org