IOTA/IOTA-ES occultation update for (136) Austria / TYC 0706-01957-1 event on 2008 Mar 03, 17:04 UT Visible from China, SW Asia Summary ------- On 2008 Mar 03 UT, the 33 km diameter asteroid (136) Austria will occult a 11.2 mag star in the constellation Orion for observers along a path across China, SW Asia. In the case of an occultation, the combined light of the asteroid and the star will drop by 3.3 mag to 14.4 mag (the magnitude of the asteroid) for at most 2.2 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: UCAC. The event at a glimpse ---------------------- * Rank: 54 * date and approx. time of event: 2008 Mar 03, 17:04 - 2008 Mar 03, 17:11 UT * magnitude of target star: 11.2 * magnitude drop [mag]: 3.3 * estimated maximum duration [s]: 2.2 * Moon: 18 % sunlit, 143° distance * Sun: 94° distance * rough path description: China, SW Asia The occultation path -------------------- * approximate projected width [km]: 34 * 1 sigma uncertainty interval [path widths]: +/- 1.18 * 1 sigma uncertainty interval [seconds]: +/- 3.1 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .032 +/- .023) * 1 sigma uncertainty ellipse (major, minor, PA): ( .032", .023", 90° ) * approx speed of asteroid's shadow [km/s]: 15.1100 * website for maps: http://lunar-occultations.com/iota/asteroids/astrndx.htm http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 0706-01957-1 by 136 Austria on 2008 Mar 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 ' " Latitude Latitude Latitude Latitude 15 0 0 21 52 56 17 4 38 79 153 -1 21 42 57 22 2 55 21 19 25 22 26 31 16 0 0 22 18 2 17 4 46 79 159 -2 22 8 4 22 28 1 21 44 34 22 51 34 17 0 0 22 42 50 17 4 53 79 165 -3 22 32 53 22 52 47 22 9 25 23 16 18 18 0 0 23 7 18 17 5 1 79 170 -4 22 57 22 23 17 15 22 33 57 23 40 43 19 0 0 23 31 28 17 5 8 79 176 -5 23 21 33 23 41 23 22 58 10 24 4 49 20 0 0 23 55 17 17 5 16 78 181 -6 23 45 23 24 5 11 23 22 3 24 28 35 21 0 0 24 18 46 17 5 23 78 186 -7 24 8 53 24 28 39 23 45 36 24 52 0 22 0 0 24 41 55 17 5 31 77 190 -8 24 32 3 24 51 47 24 8 48 25 15 5 23 0 0 25 4 42 17 5 38 77 194 -9 24 54 52 25 14 33 24 31 39 25 37 49 24 0 0 25 27 9 17 5 45 76 198 -10 25 17 19 25 36 58 24 54 9 26 0 12 25 0 0 25 49 14 17 5 53 75 201 -10 25 39 25 25 59 2 25 16 18 26 22 13 26 0 0 26 10 57 17 6 0 75 205 -11 26 1 9 26 20 44 25 38 5 26 43 52 27 0 0 26 32 17 17 6 7 74 208 -12 26 22 32 26 42 4 25 59 30 27 5 9 28 0 0 26 53 16 17 6 14 73 210 -13 26 43 31 27 3 1 26 20 32 27 26 3 29 0 0 27 13 52 17 6 21 72 213 -14 27 4 8 27 23 36 26 41 12 27 46 35 30 0 0 27 34 5 17 6 28 72 215 -15 27 24 23 27 43 48 27 1 30 28 6 45 31 0 0 27 53 56 17 6 35 71 217 -16 27 44 14 28 3 37 27 21 24 28 26 31 32 0 0 28 13 23 17 6 42 70 219 -17 28 3 43 28 23 3 27 40 55 28 45 54 33 0 0 28 32 27 17 6 49 69 221 -18 28 22 48 28 42 6 28 0 3 29 4 54 34 0 0 28 51 7 17 6 55 68 222 -19 28 41 29 29 0 45 28 18 47 29 23 30 35 0 0 29 9 24 17 7 2 68 224 -20 28 59 48 29 19 1 28 37 8 29 41 43 36 0 0 29 27 17 17 7 8 67 226 -20 29 17 42 29 36 53 28 55 6 29 59 33 37 0 0 29 44 47 17 7 15 66 227 -21 29 35 13 29 54 21 29 12 39 30 16 58 38 0 0 30 1 53 17 7 21 65 228 -22 29 52 20 30 11 26 29 29 49 30 34 0 39 0 0 30 18 35 17 7 28 64 230 -23 30 9 3 30 28 7 29 46 34 30 50 38 40 0 0 30 34 53 17 7 34 63 231 -24 30 25 22 30 44 24 30 2 56 31 6 52 41 0 0 30 50 47 17 7 40 63 232 -25 30 41 17 31 0 16 30 18 54 31 22 43 42 0 0 31 6 16 17 7 46 62 233 -26 30 56 48 31 15 45 30 34 27 31 38 9 43 0 0 31 21 22 17 7 52 61 234 -26 31 11 55 31 30 50 30 49 37 31 53 11 44 0 0 31 36 4 17 7 58 60 235 -27 31 26 38 31 45 31 31 4 22 32 7 49 45 0 0 31 50 22 17 8 4 59 237 -28 31 40 57 31 59 47 31 18 44 32 22 3 46 0 0 32 4 16 17 8 10 58 238 -29 31 54 51 32 13 40 31 32 41 32 35 53 47 0 0 32 17 45 17 8 15 57 238 -30 32 8 22 32 27 9 31 46 14 32 49 20 48 0 0 32 30 51 17 8 21 57 239 -30 32 21 28 32 40 13 31 59 23 33 2 22 49 0 0 32 43 32 17 8 26 56 240 -31 32 34 11 32 52 54 32 12 7 33 15 0 50 0 0 32 55 49 17 8 32 55 241 -32 32 46 29 33 5 10 32 24 28 33 27 14 51 0 0 33 7 43 17 8 37 54 242 -33 32 58 24 33 17 3 32 36 25 33 39 4 52 0 0 33 19 12 17 8 42 53 243 -34 33 9 54 33 28 31 32 47 57 33 50 31 53 0 0 33 30 18 17 8 48 52 244 -34 33 21 0 33 39 36 32 59 6 34 1 33 54 0 0 33 41 0 17 8 53 51 245 -35 33 31 43 33 50 17 33 9 50 34 12 12 55 0 0 33 51 17 17 8 58 51 246 -36 33 42 2 34 0 34 33 20 11 34 22 27 56 0 0 34 1 12 17 9 3 50 246 -37 33 51 56 34 10 27 33 30 8 34 32 19 57 0 0 34 10 42 17 9 8 49 247 -37 34 1 28 34 19 56 33 39 41 34 41 46 58 0 0 34 19 48 17 9 13 48 248 -38 34 10 35 34 29 2 33 48 50 34 50 50 59 0 0 34 28 31 17 9 17 47 249 -39 34 19 19 34 37 44 33 57 35 34 59 31 60 0 0 34 36 51 17 9 22 46 249 -40 34 27 39 34 46 3 34 5 57 35 7 48 61 0 0 34 44 47 17 9 27 46 250 -40 34 35 35 34 53 58 34 13 55 35 15 41 62 0 0 34 52 19 17 9 31 45 251 -41 34 43 8 35 1 30 34 21 29 35 23 12 63 0 0 34 59 28 17 9 35 44 252 -42 34 50 18 35 8 38 34 28 40 35 30 19 64 0 0 35 6 13 17 9 40 43 252 -42 34 57 4 35 15 23 34 35 28 35 37 2 65 0 0 35 12 36 17 9 44 42 253 -43 35 3 26 35 21 45 34 41 52 35 43 23 66 0 0 35 18 35 17 9 48 41 254 -44 35 9 26 35 27 43 34 47 52 35 49 20 67 0 0 35 24 10 17 9 52 41 254 -44 35 15 2 35 33 19 34 53 29 35 54 54 68 0 0 35 29 23 17 9 56 40 255 -45 35 20 15 35 38 31 34 58 43 36 0 5 69 0 0 35 34 12 17 10 0 39 256 -46 35 25 5 35 43 20 35 3 34 36 4 53 70 0 0 35 38 39 17 10 4 38 257 -46 35 29 32 35 47 46 35 8 2 36 9 18 71 0 0 35 42 42 17 10 8 37 257 -47 35 33 35 35 51 49 35 12 6 36 13 20 72 0 0 35 46 22 17 10 12 37 258 -48 35 37 16 35 55 29 35 15 48 36 17 0 73 0 0 35 49 40 17 10 15 36 259 -48 35 40 34 35 58 46 35 19 6 36 20 16 74 0 0 35 52 34 17 10 19 35 259 -49 35 43 28 36 1 40 35 22 1 36 23 10 75 0 0 35 55 6 17 10 23 34 260 -50 35 46 0 36 4 12 35 24 34 36 25 41 76 0 0 35 57 15 17 10 26 33 261 -50 35 48 9 36 6 20 35 26 43 36 27 49 77 0 0 35 59 1 17 10 29 32 261 -51 35 49 55 36 8 6 35 28 30 36 29 35 78 0 0 36 0 24 17 10 33 32 262 -51 35 51 19 36 9 29 35 29 53 36 30 58 79 0 0 36 1 25 17 10 36 31 263 -52 35 52 20 36 10 30 35 30 54 36 31 58 80 0 0 36 2 3 17 10 39 30 263 -53 35 52 57 36 11 8 35 31 32 36 32 36 81 0 0 36 2 18 17 10 42 29 264 -53 35 53 13 36 11 23 35 31 47 36 32 51 82 0 0 36 2 10 17 10 45 28 265 -54 35 53 5 36 11 16 35 31 40 36 32 44 83 0 0 36 1 40 17 10 48 28 265 -54 35 52 35 36 10 46 35 31 10 36 32 14 84 0 0 36 0 48 17 10 51 27 266 -55 35 51 42 36 9 53 35 30 17 36 31 21 85 0 0 35 59 32 17 10 53 26 266 -55 35 50 27 36 8 38 35 29 1 36 30 7 86 0 0 35 57 55 17 10 56 25 267 -56 35 48 49 36 7 0 35 27 23 36 28 29 87 0 0 35 55 54 17 10 59 24 268 -56 35 46 48 36 5 0 35 25 22 36 26 30 88 0 0 35 53 31 17 11 1 23 268 -57 35 44 25 36 2 37 35 22 58 36 24 7 89 0 0 35 50 46 17 11 3 23 269 -57 35 41 40 35 59 52 35 20 12 36 21 23 90 0 0 35 47 38 17 11 6 22 269 -58 35 38 31 35 56 44 35 17 3 36 18 16 91 0 0 35 44 7 17 11 8 21 270 -58 35 35 0 35 53 14 35 13 31 36 14 46 92 0 0 35 40 14 17 11 10 20 271 -58 35 31 7 35 49 22 35 9 37 36 10 54 93 0 0 35 35 58 17 11 12 19 271 -59 35 26 51 35 45 6 35 5 20 36 6 40 94 0 0 35 31 20 17 11 14 19 272 -59 35 22 12 35 40 29 35 0 40 36 2 3 95 0 0 35 26 20 17 11 16 18 273 -60 35 17 11 35 35 28 34 55 38 35 57 4 96 0 0 35 20 56 17 11 18 17 273 -60 35 11 48 35 30 6 34 50 13 35 51 43 97 0 0 35 15 11 17 11 20 16 274 -60 35 6 1 35 24 20 34 44 26 35 45 59 98 0 0 35 9 2 17 11 22 15 274 -61 34 59 53 35 18 13 34 38 16 35 39 52 99 0 0 35 2 32 17 11 23 14 275 -61 34 53 21 35 11 42 34 31 43 35 33 23 100 0 0 34 55 38 17 11 25 14 275 -61 34 46 27 35 4 49 34 24 48 35 26 32 101 0 0 34 48 22 17 11 26 13 276 -61 34 39 11 34 57 34 34 17 30 35 19 18 102 0 0 34 40 44 17 11 27 12 277 -62 34 31 31 34 49 56 34 9 49 35 11 41 103 0 0 34 32 43 17 11 29 11 277 -62 34 23 30 34 41 56 34 1 46 35 3 43 104 0 0 34 24 19 17 11 30 10 278 -62 34 15 5 34 33 33 33 53 20 34 55 21 105 0 0 34 15 33 17 11 31 9 278 -62 34 6 18 34 24 47 33 44 31 34 46 38 106 0 0 34 6 24 17 11 32 9 279 -62 33 57 9 34 15 39 33 35 20 34 37 31 107 0 0 33 56 53 17 11 33 8 279 -63 33 47 37 34 6 9 33 25 46 34 28 3 108 0 0 33 46 59 17 11 34 7 280 -63 33 37 42 33 56 16 33 15 49 34 18 11 109 0 0 33 36 42 17 11 34 6 281 -63 33 27 25 33 46 0 33 5 30 34 7 57 110 0 0 33 26 3 17 11 35 5 281 -63 33 16 45 33 35 22 32 54 48 33 57 21 111 0 0 33 15 2 17 11 36 4 282 -63 33 5 42 33 24 21 32 43 44 33 46 23 112 0 0 33 3 38 17 11 36 3 282 -63 32 54 17 33 12 58 32 32 17 33 35 1 113 0 0 32 51 51 17 11 36 3 283 -63 32 42 30 33 1 12 32 20 27 33 23 18 114 0 0 32 39 42 17 11 37 2 283 -63 32 30 20 32 49 4 32 8 15 33 11 12 115 0 0 32 27 10 17 11 37 1 284 -62 32 17 48 32 36 33 31 55 41 32 58 43 Uncertainty in time = +/- 3 secs [Prediction of 2008 Feb 27.0] Data for the target star ------------------------ * name: TYC 0706-01957-1 * constellation : Orion * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 05 11 20.2482 DE: +12 07 27.560 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .029, .021 ) * V mag [mag]: 11.2 * B mag [mag]: 12.0 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (136) Austria approx. diameter [km]: 33 approx. diameter ["]: .021 distance from Earth [AU]: 2.14900 * orbital information: orbit source: Preston date of fit: 2008 Feb 27 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 691 number of rejected observations: 97 time covered by the observations: 1906 Aug 16 - 2008 Jan 20 1 sigma uncertainty ellipse (major, minor, PA): 0.014, 0.011, 90° remarks: * orbital elements for (136) Austria : Mean anomaly = 136.63400030 deg Arg. of pericenter = 132.77280299 deg Long. of node = 186.52884158 deg Inclination = 9.56853974 deg Eccentricity = 0.08485586 Semimajor axis = 2.28705207 AU Perihelion dist = 2.09298230 AU Mag: H = 9.56, G = 0.15 Epoch of elements : MJD 54528.71200000 TDT (2008 Mar 03.712) ------ occelmnt file for Occult BEGIN ----------------------------------- 2008 Mar 3 136 Austria 17h 4.7m UT 11.2 5 11 20.248 12 7 27.56TYC 0706-01957-1 12.0 14.4 33 2.2 2.149 2.204 13.18 19.8155 12.121 -73.22 -6.49 17.0784 -0.07051 0.17159 7.89627 3.22252 0.00569 0.00058 2000 134.1513942008 224.00000132.772803186.528842 9.5685400.08485586 2.2870521 2.0929823 9.7 5.00.15 RATE 2.8496400 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.032 0.023 90 2.18 0.025 0 54523.5020080303_1957-1 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2008 Feb 27, 19:27 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org