IOTA/IOTA-ES occultation update for (43) Ariadne / TYC 5242-00706-1 event on 2008 Dec 05, 00:12 UT Visible from E USA Summary ------- On 2008 Dec 05 UT, the 66 km diameter asteroid (43) Ariadne will occult a 11.3 mag star in the constellation Pisces for observers along a path across E USA. In the case of an occultation, the combined light of the asteroid and the star will drop by 1.3 mag to 12.2 mag (the magnitude of the asteroid) for at most 3.8 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: 85 * date and approx. time of event: 2008 Dec 05, 00:12 - 2008 Dec 05, 00:18 UT * magnitude of target star: 11.3 * magnitude drop [mag]: 1.3 * estimated maximum duration [s]: 3.8 * Moon: 41 % sunlit, 15° distance * Sun: 95° distance * rough path description: E USA The occultation path -------------------- * approximate projected width [km]: 79 * 1 sigma uncertainty interval [path widths]: +/- 0.60 * 1 sigma uncertainty interval [seconds]: +/- 2.0 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .025 +/- .030) * 1 sigma uncertainty ellipse (major, minor, PA): ( .030", .025", 359° ) * approx speed of asteroid's shadow [km/s]: 17.3648 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 5242-00706-1 by 43 Ariadne on 2008 Dec 5 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 -108 0 0 28 14 21 0 12 16 56 146 0 27 51 43 28 37 4 27 24 43 29 4 28 -107 0 0 28 32 56 0 12 22 56 148 -1 28 10 18 28 55 41 27 43 16 29 23 6 -106 0 0 28 51 37 0 12 28 56 150 -2 28 28 58 29 14 23 28 1 55 29 41 50 -105 0 0 29 10 24 0 12 34 56 152 -3 28 47 43 29 33 10 28 20 39 30 0 38 -104 0 0 29 29 14 0 12 40 57 154 -4 29 6 33 29 52 1 28 39 28 30 19 31 -103 0 0 29 48 8 0 12 46 57 156 -5 29 25 27 30 10 57 28 58 20 30 38 27 -102 0 0 30 7 6 0 12 52 57 158 -6 29 44 24 30 29 55 29 17 16 30 57 26 -101 0 0 30 26 7 0 12 58 57 160 -7 30 3 24 30 48 57 29 36 16 31 16 29 -100 0 0 30 45 10 0 13 4 57 162 -8 30 22 26 31 8 1 29 55 17 31 35 34 - 99 0 0 31 4 15 0 13 10 57 164 -9 30 41 31 31 27 6 30 14 21 31 54 40 - 98 0 0 31 23 22 0 13 16 57 165 -10 31 0 37 31 46 14 30 33 26 32 13 48 - 97 0 0 31 42 29 0 13 22 56 167 -10 31 19 44 32 5 22 30 52 33 32 32 57 - 96 0 0 32 1 37 0 13 28 56 169 -11 31 38 51 32 24 30 31 11 40 32 52 6 - 95 0 0 32 20 45 0 13 34 56 171 -12 31 57 59 32 43 38 31 30 47 33 11 14 - 94 0 0 32 39 53 0 13 40 56 173 -13 32 17 6 33 2 46 31 49 53 33 30 22 - 93 0 0 32 58 59 0 13 46 56 175 -14 32 36 12 33 21 53 32 8 59 33 49 29 - 92 0 0 33 18 4 0 13 52 55 177 -15 32 55 16 33 40 58 32 28 3 34 8 35 - 91 0 0 33 37 7 0 13 57 55 179 -16 33 14 19 34 0 1 32 47 6 34 27 38 - 90 0 0 33 56 7 0 14 3 55 181 -17 33 33 19 34 19 1 33 6 6 34 46 38 - 89 0 0 34 15 5 0 14 9 55 182 -18 33 52 17 34 37 59 33 25 4 35 5 36 - 88 0 0 34 33 59 0 14 14 54 184 -19 34 11 11 34 56 53 33 43 58 35 24 30 - 87 0 0 34 52 49 0 14 20 54 186 -20 34 30 2 35 15 43 34 2 49 35 43 20 - 86 0 0 35 11 36 0 14 25 53 187 -20 34 48 48 35 34 29 34 21 35 36 2 6 - 85 0 0 35 30 17 0 14 31 53 189 -21 35 7 30 35 53 10 34 40 17 36 20 47 - 84 0 0 35 48 53 0 14 36 53 191 -22 35 26 7 36 11 47 34 58 54 36 39 23 - 83 0 0 36 7 24 0 14 42 52 192 -23 35 44 38 36 30 17 35 17 26 36 57 53 - 82 0 0 36 25 49 0 14 47 52 194 -24 36 3 3 36 48 42 35 35 52 37 16 17 - 81 0 0 36 44 8 0 14 52 51 195 -25 36 21 22 37 7 0 35 54 11 37 34 35 - 80 0 0 37 2 20 0 14 57 51 197 -26 36 39 35 37 25 11 36 12 25 37 52 45 - 79 0 0 37 20 25 0 15 3 50 198 -27 36 57 40 37 43 16 36 30 31 38 10 49 - 78 0 0 37 38 22 0 15 8 49 200 -27 37 15 38 38 1 12 36 48 29 38 28 45 - 77 0 0 37 56 12 0 15 13 49 201 -28 37 33 28 38 19 1 37 6 21 38 46 33 - 76 0 0 38 13 53 0 15 18 48 202 -29 37 51 11 38 36 42 37 24 4 39 4 13 - 75 0 0 38 31 26 0 15 22 48 204 -30 38 8 44 38 54 14 37 41 38 39 21 44 - 74 0 0 38 48 50 0 15 27 47 205 -31 38 26 9 39 11 37 37 59 4 39 39 6 - 73 0 0 39 6 5 0 15 32 47 206 -31 38 43 25 39 28 51 38 16 21 39 56 19 - 72 0 0 39 23 10 0 15 37 46 208 -32 39 0 31 39 45 55 38 33 28 40 13 22 - 71 0 0 39 40 6 0 15 41 45 209 -33 39 17 28 40 2 50 38 50 26 40 30 15 - 70 0 0 39 56 51 0 15 46 45 210 -34 39 34 14 40 19 34 39 7 14 40 46 59 - 69 0 0 40 13 27 0 15 50 44 211 -35 39 50 51 40 36 9 39 23 52 41 3 31 - 68 0 0 40 29 51 0 15 55 43 212 -35 40 7 17 40 52 32 39 40 19 41 19 53 - 67 0 0 40 46 5 0 15 59 43 213 -36 40 23 31 41 8 45 39 56 35 41 36 4 - 66 0 0 41 2 8 0 16 3 42 215 -37 40 39 35 41 24 46 40 12 40 41 52 4 - 65 0 0 41 17 59 0 16 7 42 216 -38 40 55 28 41 40 36 40 28 34 42 7 53 - 64 0 0 41 33 39 0 16 11 41 217 -39 41 11 9 41 56 15 40 44 17 42 23 30 - 63 0 0 41 49 7 0 16 15 40 218 -39 41 26 38 42 11 41 40 59 48 42 38 55 - 62 0 0 42 4 23 0 16 19 40 219 -40 41 41 56 42 26 56 41 15 7 42 54 8 - 61 0 0 42 19 27 0 16 23 39 220 -41 41 57 1 42 41 58 41 30 14 43 9 8 - 60 0 0 42 34 18 0 16 27 38 221 -41 42 11 54 42 56 48 41 45 8 43 23 57 - 59 0 0 42 48 57 0 16 30 37 222 -42 42 26 34 43 11 26 41 59 50 43 38 32 - 58 0 0 43 3 23 0 16 34 37 223 -43 42 41 2 43 25 50 42 14 20 43 52 55 - 57 0 0 43 17 36 0 16 38 36 224 -44 42 55 16 43 40 2 42 28 36 44 7 5 - 56 0 0 43 31 37 0 16 41 35 225 -44 43 9 18 43 54 1 42 42 40 44 21 2 - 55 0 0 43 45 24 0 16 45 35 226 -45 43 23 7 44 7 47 42 56 30 44 34 46 - 54 0 0 43 58 58 0 16 48 34 227 -46 43 36 43 44 21 19 43 10 8 44 48 17 - 53 0 0 44 12 19 0 16 51 33 228 -46 43 50 5 44 34 38 43 23 32 45 1 34 - 52 0 0 44 25 26 0 16 54 33 228 -47 44 3 13 44 47 44 43 36 42 45 14 37 - 51 0 0 44 38 19 0 16 57 32 229 -47 44 16 8 45 0 36 43 49 39 45 27 27 - 50 0 0 44 50 59 0 17 0 31 230 -48 44 28 50 45 13 14 44 2 22 45 40 4 - 49 0 0 45 3 25 0 17 3 31 231 -49 44 41 17 45 25 38 44 14 51 45 52 26 - 48 0 0 45 15 37 0 17 6 30 232 -49 44 53 31 45 37 48 44 27 7 46 4 34 - 47 0 0 45 27 35 0 17 9 29 233 -50 45 5 30 45 49 45 44 39 8 46 16 29 - 46 0 0 45 39 19 0 17 12 29 234 -51 45 17 16 46 1 27 44 50 56 46 28 10 - 45 0 0 45 50 49 0 17 14 28 235 -51 45 28 47 46 12 56 45 2 29 46 39 36 - 44 0 0 46 2 5 0 17 17 27 236 -52 45 40 5 46 24 10 45 13 48 46 50 48 - 43 0 0 46 13 6 0 17 19 27 236 -52 45 51 8 46 35 10 45 24 53 47 1 46 - 42 0 0 46 23 54 0 17 22 26 237 -53 46 1 57 46 45 56 45 35 44 47 12 30 - 41 0 0 46 34 27 0 17 24 25 238 -53 46 12 31 46 56 27 45 46 21 47 23 0 - 40 0 0 46 44 45 0 17 27 24 239 -54 46 22 52 47 6 45 45 56 43 47 33 15 - 39 0 0 46 54 50 0 17 29 24 240 -54 46 32 58 47 16 47 46 6 50 47 43 16 - 38 0 0 47 4 40 0 17 31 23 241 -55 46 42 49 47 26 36 46 16 44 47 53 3 - 37 0 0 47 14 15 0 17 33 22 241 -55 46 52 26 47 36 10 46 26 23 48 2 35 - 36 0 0 47 23 37 0 17 35 22 242 -56 47 1 49 47 45 30 46 35 47 48 11 53 - 35 0 0 47 32 43 0 17 37 21 243 -56 47 10 57 47 54 35 46 44 57 48 20 56 - 34 0 0 47 41 36 0 17 39 20 244 -57 47 19 51 48 3 26 46 53 52 48 29 46 - 33 0 0 47 50 13 0 17 41 20 245 -57 47 28 30 48 12 2 47 2 33 48 38 20 - 32 0 0 47 58 37 0 17 43 19 245 -57 47 36 55 48 20 24 47 10 59 48 46 41 - 31 0 0 48 6 46 0 17 44 18 246 -58 47 45 5 48 28 32 47 19 11 48 54 46 - 30 0 0 48 14 40 0 17 46 18 247 -58 47 53 1 48 36 25 47 27 9 49 2 38 - 29 0 0 48 22 20 0 17 47 17 248 -59 48 0 42 48 44 3 47 34 51 49 10 15 - 28 0 0 48 29 45 0 17 49 16 249 -59 48 8 9 48 51 28 47 42 20 49 17 38 - 27 0 0 48 36 56 0 17 50 16 249 -59 48 15 21 48 58 37 47 49 33 49 24 46 - 26 0 0 48 43 53 0 17 52 15 250 -60 48 22 19 49 5 33 47 56 32 49 31 40 - 25 0 0 48 50 35 0 17 53 14 251 -60 48 29 2 49 12 14 48 3 17 49 38 19 - 24 0 0 48 57 3 0 17 54 14 252 -60 48 35 31 49 18 40 48 9 47 49 44 45 - 23 0 0 49 3 16 0 17 56 13 253 -60 48 41 45 49 24 53 48 16 3 49 50 55 - 22 0 0 49 9 15 0 17 57 12 253 -61 48 47 45 49 30 51 48 22 4 49 56 52 - 21 0 0 49 15 0 0 17 58 12 254 -61 48 53 31 49 36 34 48 27 51 50 2 34 - 20 0 0 49 20 30 0 17 59 11 255 -61 48 59 2 49 42 3 48 33 24 50 8 2 - 19 0 0 49 25 46 0 18 0 10 256 -61 49 4 19 49 47 18 48 38 41 50 13 16 - 18 0 0 49 30 47 0 18 1 10 256 -61 49 9 21 49 52 19 48 43 45 50 18 16 - 17 0 0 49 35 35 0 18 1 9 257 -62 49 14 9 49 57 5 48 48 34 50 23 1 - 16 0 0 49 40 8 0 18 2 9 258 -62 49 18 43 50 1 37 48 53 9 50 27 32 - 15 0 0 49 44 26 0 18 3 8 259 -62 49 23 3 50 5 55 48 57 29 50 31 49 - 14 0 0 49 48 31 0 18 4 7 259 -62 49 27 8 50 9 59 49 1 35 50 35 52 - 13 0 0 49 52 21 0 18 4 7 260 -62 49 30 59 50 13 48 49 5 27 50 39 40 - 12 0 0 49 55 57 0 18 5 6 261 -62 49 34 35 50 17 24 49 9 4 50 43 15 - 11 0 0 49 59 19 0 18 5 5 262 -62 49 37 58 50 20 45 49 12 27 50 46 35 - 10 0 0 50 2 26 0 18 6 5 263 -62 49 41 6 50 23 52 49 15 36 50 49 42 - 9 0 0 50 5 20 0 18 6 4 263 -62 49 44 0 50 26 45 49 18 31 50 52 34 - 8 0 0 50 7 59 0 18 6 3 264 -62 49 46 39 50 29 23 49 21 11 50 55 12 - 7 0 0 50 10 24 0 18 7 3 265 -62 49 49 5 50 31 48 49 23 37 50 57 36 - 6 0 0 50 12 35 0 18 7 2 266 -62 49 51 16 50 33 59 49 25 49 50 59 46 - 5 0 0 50 14 32 0 18 7 1 266 -62 49 53 14 50 35 56 49 27 47 51 1 43 - 4 0 0 50 16 15 0 18 7 1 267 -62 49 54 57 50 37 38 49 29 30 51 3 25 - 3 0 0 50 17 44 0 18 7 0 268 -62 49 56 26 50 39 7 49 30 59 51 4 53 Uncertainty in time = +/- 2 secs [Prediction of 2008 Nov 26.0] Data for the target star ------------------------ * name: TYC 5242-00706-1 * constellation : Pisces * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 23 09 07.4794 DE: -01 18 30.822 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .024, .029 ) * V mag [mag]: 11.3 * B mag [mag]: 11.5 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (43) Ariadne approx. diameter [km]: 66 approx. diameter ["]: .049 distance from Earth [AU]: 1.85000 * orbital information: orbit source: Preston date of fit: 2008 Nov 26 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 1031 number of rejected observations: 158 time covered by the observations: 1904 Nov 17 - 2008 Nov 04 1 sigma uncertainty ellipse (major, minor, PA): 0.009, 0.007, 67° remarks: * orbital elements for (43) Ariadne : Mean anomaly = 74.71496995 deg Arg. of pericenter = 15.83118880 deg Long. of node = 264.92939411 deg Inclination = 3.46772607 deg Eccentricity = 0.16808808 Semimajor axis = 2.20296338 AU Perihelion dist = 1.83267148 AU Mag: H = 7.80, G = 0.11 Epoch of elements : MJD 54805.00900000 TDT (2008 Dec 05.009) ------ occelmnt file for Occult BEGIN ----------------------------------- 2008 Dec 5 43 Ariadne 0h 13.0m UT 11.3 23 9 7.479- 1 18 30.82TYC 5242-00706-1 11.5 12.2 66 3.8 1.850 2.973 13.52 -90.1444 -1.312 174.40 -22.39 0.2167 -0.15980 0.52348 9.37948 2.84408 0.00518 0.00215 2000 73.20508420081130.00000 15.831189264.929394 3.4677260.16808808 2.2029634 1.8326715 7.9 5.00.11 RATE 3.0143460 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.030 0.025 359 1.60 0.030 0 54796.5020081205_0706-1 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2008 Nov 26, 23:41 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org