IOTA/IOTA-ES occultation update for (67) Asia / TYC 5766-00575-1 event on 2012 Oct 24, 19:17 UT Visible from Europe, Russia Summary ------- On 2012 Oct 24 UT, the 62 km diameter asteroid (67) Asia will occult a 10.4 mag star in the constellation Capricornus for observers along a path across Europe, Russia. In the case of an occultation, the combined light of the asteroid and the star will drop by 2.0 mag to 12.2 mag (the magnitude of the asteroid) for at most 3.2 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: 93 * date and approx. time of event: 2012 Oct 24, 19:16 - 2012 Oct 24, 19:20 UT * geocentric midpoint of event [JD]: 2456225.303625 * magnitude of target star: 10.4 * magnitude drop [mag]: 2.0 * estimated maximum duration [s]: 3.2 * Moon: 77 % sunlit, 29° distance * Sun: 94° distance * rough path description: Europe, Russia The occultation path -------------------- * approximate projected width [km]: 100 * 1 sigma uncertainty interval [path widths]: +/- 0.47 * 1 sigma uncertainty interval [seconds]: +/- 1.6 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .026 +/- .024) * 1 sigma uncertainty ellipse (major, minor, PA): ( .026", .024", 89° ) * approx speed of asteroid's shadow [km/s]: 19.1075 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 5766-00575-1 by 67 Asia on 2012 Oct 24 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 - 32 0 0 37 54 41 19 16 16 36 160 0 37 27 35 38 22 4 37 2 21 38 48 3 - 31 0 0 37 54 35 19 16 20 37 161 -1 37 27 29 38 21 57 37 2 15 38 47 57 - 30 0 0 37 54 49 19 16 25 37 163 -2 37 27 43 38 22 12 37 2 29 38 48 11 - 29 0 0 37 55 24 19 16 30 37 164 -3 37 28 17 38 22 47 37 3 3 38 48 46 - 28 0 0 37 56 19 19 16 34 37 165 -4 37 29 12 38 23 42 37 3 58 38 49 42 - 27 0 0 37 57 35 19 16 39 37 166 -4 37 30 28 38 24 58 37 5 13 38 50 59 - 26 0 0 37 59 11 19 16 43 38 167 -5 37 32 4 38 26 35 37 6 48 38 52 35 - 25 0 0 38 1 7 19 16 48 38 169 -6 37 34 0 38 28 32 37 8 44 38 54 33 - 24 0 0 38 3 24 19 16 53 38 170 -7 37 36 16 38 30 49 37 11 0 38 56 51 - 23 0 0 38 6 2 19 16 57 38 171 -8 37 38 53 38 33 27 37 13 36 38 59 30 - 22 0 0 38 8 59 19 17 2 38 172 -8 37 41 49 38 36 25 37 16 32 39 2 28 - 21 0 0 38 12 17 19 17 7 38 174 -9 37 45 6 38 39 44 37 19 48 39 5 48 - 20 0 0 38 15 54 19 17 11 38 175 -10 37 48 43 38 43 22 37 23 25 39 9 27 - 19 0 0 38 19 52 19 17 16 38 176 -11 37 52 40 38 47 21 37 27 21 39 13 27 - 18 0 0 38 24 10 19 17 21 38 177 -12 37 56 57 38 51 40 37 31 36 39 17 46 - 17 0 0 38 28 47 19 17 25 38 179 -12 38 1 33 38 56 18 37 36 12 39 22 26 - 16 0 0 38 33 44 19 17 30 38 180 -13 38 6 29 39 1 16 37 41 7 39 27 25 - 15 0 0 38 39 1 19 17 35 38 181 -14 38 11 45 39 6 34 37 46 21 39 32 44 - 14 0 0 38 44 37 19 17 39 38 182 -15 38 17 20 39 12 12 37 51 55 39 38 23 - 13 0 0 38 50 33 19 17 44 38 184 -16 38 23 14 39 18 8 37 57 48 39 44 21 - 12 0 0 38 56 47 19 17 49 37 185 -16 38 29 27 39 24 24 38 4 0 39 50 38 - 11 0 0 39 3 20 19 17 53 37 186 -17 38 35 59 39 30 59 38 10 30 39 57 14 - 10 0 0 39 10 13 19 17 58 37 187 -18 38 42 49 39 37 53 38 17 20 40 4 10 - 9 0 0 39 17 23 19 18 2 37 189 -19 38 49 59 39 45 5 38 24 28 40 11 24 - 8 0 0 39 24 53 19 18 7 37 190 -20 38 57 26 39 52 36 38 31 54 40 18 56 - 7 0 0 39 32 40 19 18 11 36 191 -20 39 5 12 40 0 25 38 39 38 40 26 47 - 6 0 0 39 40 45 19 18 16 36 192 -21 39 13 16 40 8 32 38 47 40 40 34 56 - 5 0 0 39 49 9 19 18 20 36 193 -22 39 21 37 40 16 57 38 56 0 40 43 22 - 4 0 0 39 57 49 19 18 24 35 195 -23 39 30 16 40 25 40 39 4 37 40 52 7 - 3 0 0 40 6 47 19 18 29 35 196 -23 39 39 12 40 34 40 39 13 31 41 1 8 - 2 0 0 40 16 2 19 18 33 35 197 -24 39 48 25 40 43 57 39 22 43 41 10 27 - 1 0 0 40 25 34 19 18 37 34 198 -25 39 57 55 40 53 31 39 32 11 41 20 3 0 0 0 40 35 22 19 18 41 34 199 -26 40 7 41 41 3 21 39 41 55 41 29 56 1 0 0 40 45 27 19 18 46 33 200 -26 40 17 44 41 13 28 39 51 56 41 40 5 2 0 0 40 55 48 19 18 50 33 201 -27 40 28 3 41 23 51 40 2 13 41 50 29 3 0 0 41 6 24 19 18 54 33 202 -28 40 38 37 41 34 29 40 12 45 42 1 10 4 0 0 41 17 16 19 18 58 32 204 -29 40 49 26 41 45 23 40 23 33 42 12 6 5 0 0 41 28 23 19 19 2 32 205 -29 41 0 31 41 56 32 40 34 35 42 23 17 6 0 0 41 39 44 19 19 5 31 206 -30 41 11 50 42 7 56 40 45 53 42 34 44 7 0 0 41 51 20 19 19 9 31 207 -31 41 23 24 42 19 35 40 57 25 42 46 24 8 0 0 42 3 11 19 19 13 30 208 -32 41 35 12 42 31 27 41 9 10 42 58 19 9 0 0 42 15 15 19 19 17 30 209 -32 41 47 14 42 43 33 41 21 10 43 10 28 10 0 0 42 27 32 19 19 20 29 210 -33 41 59 29 42 55 53 41 33 23 43 22 50 11 0 0 42 40 2 19 19 24 28 211 -34 42 11 57 43 8 26 41 45 49 43 35 25 12 0 0 42 52 46 19 19 27 28 212 -34 42 24 38 43 21 12 41 58 28 43 48 13 13 0 0 43 5 41 19 19 31 27 213 -35 42 37 31 43 34 10 42 11 19 44 1 13 14 0 0 43 18 49 19 19 34 27 214 -35 42 50 37 43 47 20 42 24 22 44 14 26 15 0 0 43 32 8 19 19 37 26 215 -36 43 3 54 44 0 42 42 37 37 44 27 50 16 0 0 43 45 39 19 19 40 26 215 -37 43 17 22 44 14 15 42 51 3 44 41 25 17 0 0 43 59 20 19 19 43 25 216 -37 43 31 1 44 27 58 43 4 40 44 55 12 18 0 0 44 13 12 19 19 46 24 217 -38 43 44 50 44 41 53 43 18 27 45 9 8 19 0 0 44 27 14 19 19 49 24 218 -38 43 58 50 44 55 57 43 32 25 45 23 15 20 0 0 44 41 25 19 19 52 23 219 -39 44 12 59 45 10 11 43 46 32 45 37 31 21 0 0 44 55 46 19 19 55 22 220 -40 44 27 18 45 24 34 44 0 48 45 51 57 22 0 0 45 10 16 19 19 58 22 221 -40 44 41 45 45 39 6 44 15 13 46 6 31 23 0 0 45 24 54 19 20 0 21 222 -41 44 56 21 45 53 47 44 29 47 46 21 14 24 0 0 45 39 40 19 20 3 20 223 -41 45 11 4 46 8 35 44 44 29 46 36 4 25 0 0 45 54 33 19 20 5 20 223 -42 45 25 56 46 23 31 44 59 18 46 51 2 26 0 0 46 9 34 19 20 7 19 224 -42 45 40 54 46 38 34 45 14 15 47 6 8 27 0 0 46 24 42 19 20 10 18 225 -43 45 55 59 46 53 43 45 29 18 47 21 19 28 0 0 46 39 55 19 20 12 18 226 -43 46 11 11 47 8 59 45 44 27 47 36 37 29 0 0 46 55 15 19 20 14 17 227 -43 46 26 28 47 24 21 45 59 43 47 52 1 30 0 0 47 10 40 19 20 16 16 228 -44 46 41 51 47 39 48 46 15 4 48 7 30 31 0 0 47 26 10 19 20 18 16 228 -44 46 57 19 47 55 20 46 30 30 48 23 5 32 0 0 47 41 44 19 20 20 15 229 -45 47 12 52 48 10 57 46 46 1 48 38 43 33 0 0 47 57 23 19 20 21 14 230 -45 47 28 28 48 26 37 47 1 36 48 54 26 34 0 0 48 13 5 19 20 23 14 231 -45 47 44 9 48 42 21 47 17 14 49 10 12 35 0 0 48 28 50 19 20 25 13 232 -45 47 59 52 48 58 9 47 32 56 49 26 1 36 0 0 48 44 39 19 20 26 12 232 -46 48 15 39 49 13 59 47 48 41 49 41 53 37 0 0 49 0 29 19 20 27 12 233 -46 48 31 28 49 29 51 48 4 29 49 57 47 38 0 0 49 16 22 19 20 29 11 234 -46 48 47 19 49 45 45 48 20 18 50 13 43 39 0 0 49 32 16 19 20 30 10 235 -47 49 3 11 50 1 41 48 36 10 50 29 40 40 0 0 49 48 11 19 20 31 10 236 -47 49 19 5 50 17 38 48 52 2 50 45 38 41 0 0 50 4 7 19 20 32 9 236 -47 49 35 0 50 33 35 49 7 55 51 1 37 42 0 0 50 20 3 19 20 33 8 237 -47 49 50 55 50 49 33 49 23 49 51 17 36 43 0 0 50 35 59 19 20 34 7 238 -47 50 6 49 51 5 30 49 39 42 51 33 34 44 0 0 50 51 55 19 20 35 7 239 -47 50 22 43 51 21 27 49 55 35 51 49 32 45 0 0 51 7 49 19 20 35 6 239 -47 50 38 37 51 37 22 50 11 28 52 5 29 46 0 0 51 23 42 19 20 36 5 240 -48 50 54 29 51 53 17 50 27 19 52 21 24 47 0 0 51 39 34 19 20 37 5 241 -48 51 10 19 52 9 9 50 43 8 52 37 17 48 0 0 51 55 23 19 20 37 4 242 -48 51 26 8 52 24 59 50 58 56 52 53 8 49 0 0 52 11 9 19 20 38 3 243 -48 51 41 54 52 40 46 51 14 41 53 8 57 50 0 0 52 26 53 19 20 38 3 243 -48 51 57 37 52 56 31 51 30 24 53 24 42 51 0 0 52 42 34 19 20 38 2 244 -48 52 13 17 53 12 12 51 46 3 53 40 24 52 0 0 52 58 11 19 20 38 1 245 -48 52 28 53 53 27 49 52 1 39 53 56 2 53 0 0 53 13 44 19 20 38 1 246 -48 52 44 25 53 43 23 .. .. .. 54 11 35 54 0 0 53 29 12 19 20 38 0 247 -48 52 59 54 .. .. .. .. .. .. .. .. .. Uncertainty in time = +/- 2 secs Prediction of 2012 Oct 8.0 Data for the target star ------------------------ * name: TYC 5766-00575-1 * constellation : Capricornus * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 20 27 11.9665 DE: -13 40 17.003 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .024, .023 ) * V mag [mag]: 10.4 * B mag [mag]: 11.3 * Diameter [mas]: 0 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (67) Asia approx. diameter [km]: 62 approx. diameter ["]: .051 distance from Earth [AU]: 1.67400 * orbital information: orbit source: Preston date of fit: 2012 Oct 07 source of used astrometry: FASTT TMO MPC (via Astdys) number of used observations: 1306 number of rejected observations: 135 time covered by the observations: 1907 Nov 02 - 2012 Oct 02 1 sigma uncertainty ellipse (major, minor, PA): 0.009, 0.007, 78° remarks: * orbital elements for (67) Asia : Mean anomaly = 18.08855507 deg Arg. of pericenter = 106.22982433 deg Long. of node = 202.66367656 deg Inclination = 6.02767370 deg Eccentricity = 0.18408143 Semimajor axis = 2.42141983 AU Perihelion dist = 1.97568140 AU Mag: H = 8.28, G = 0.15 Epoch of elements : MJD 56224.80400000 TDT (2012 Oct 24.804) ------ occelmnt file for Occult BEGIN ----------------------------------- 2012 Oct 24 67 Asia 19h 17.2m UT 10.4 20 27 11.967-13 40 17.00TYC 5766-00575-1 11.3 12.2 62 3.2 1.674 3.879 3.70 -16.0976 -13.671 -113.27 -12.10 19.2870 -0.05067 0.78370 10.76184 0.70333 0.00518 0.00124 2000 16.83194120121020.00000106.229824202.663677 6.0276740.18408143 2.4214198 1.9756814 8.3 5.00.15 RATE 2.6157660 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.026 0.024 89 1.47 0.024 0 0-5-3 056208.0020121024_0575-1 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2012 Oct 07, 19:22 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org