IOTA/IOTA-ES occultation update for (1061) Paeonia / TYC 0634-01016-1 event on 2009 Jan 09, 04:27 UT Visible from Summary ------- On 2009 Jan 09 UT, the 22 km diameter asteroid (1061) Paeonia will occult a 10.4 mag star in the constellation Aries for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 6.3 mag to 16.7 mag (the magnitude of the asteroid) for at most 1.9 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: 22 * date and approx. time of event: 2009 Jan 09, 04:25 - 2009 Jan 09, 04:36 UT * magnitude of target star: 10.4 * magnitude drop [mag]: 6.3 * estimated maximum duration [s]: 1.9 * Moon: 94 % sunlit, 47° distance * Sun: 106° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 24 * 1 sigma uncertainty interval [path widths]: +/- 3.10 * 1 sigma uncertainty interval [seconds]: +/- 7.7 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .058 +/- .048) * 1 sigma uncertainty ellipse (major, minor, PA): ( .059", .046", 72° ) * approx speed of asteroid's shadow [km/s]: 11.2124 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 0634-01016-1 by 1061 Paeonia on 2009 Jan 9 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 -166 0 0 28 26 56 4 25 59 62 122 -1 28 19 1 28 34 52 27 30 8 29 24 17 -165 0 0 29 1 49 4 26 9 62 124 -2 28 53 53 29 9 45 28 5 0 29 59 9 -164 0 0 29 36 30 4 26 20 63 127 -3 29 28 35 29 44 26 28 39 42 30 33 50 -163 0 0 30 10 59 4 26 30 63 129 -4 30 3 4 30 18 55 29 14 12 31 8 17 -162 0 0 30 45 15 4 26 41 63 132 -5 30 37 20 30 53 10 29 48 30 31 42 32 -161 0 0 31 19 16 4 26 51 64 134 -6 31 11 22 31 27 11 30 22 33 32 16 31 -160 0 0 31 53 2 4 27 2 64 137 -7 31 45 8 32 0 57 30 56 22 32 50 14 -159 0 0 32 26 32 4 27 12 64 140 -8 32 18 38 32 34 26 31 29 54 33 23 40 -158 0 0 32 59 44 4 27 22 64 142 -9 32 51 51 33 7 38 32 3 10 33 56 49 -157 0 0 33 32 37 4 27 32 64 145 -10 33 24 45 33 40 31 32 36 8 34 29 38 -156 0 0 34 5 12 4 27 43 64 148 -11 33 57 20 34 13 4 33 8 46 35 2 8 -155 0 0 34 37 25 4 27 53 64 150 -12 34 29 34 34 45 17 33 41 5 35 34 16 -154 0 0 35 9 18 4 28 3 64 153 -13 35 1 28 35 17 9 34 13 3 36 6 4 -153 0 0 35 40 49 4 28 13 64 156 -14 35 33 0 35 48 40 34 44 40 36 37 29 -152 0 0 36 11 58 4 28 22 64 158 -15 36 4 9 36 19 47 35 15 55 37 8 31 -151 0 0 36 42 43 4 28 32 64 161 -16 36 34 55 36 50 31 35 46 46 37 39 9 -150 0 0 37 13 4 4 28 42 64 164 -17 37 5 17 37 20 51 36 17 14 38 9 23 -149 0 0 37 43 0 4 28 51 63 166 -18 37 35 14 37 50 47 36 47 18 38 39 12 -148 0 0 38 12 32 4 29 1 63 168 -19 38 4 47 38 20 17 37 16 57 39 8 36 -147 0 0 38 41 38 4 29 10 63 171 -20 38 33 54 38 49 22 37 46 11 39 37 34 -146 0 0 39 10 18 4 29 19 62 173 -21 39 2 35 39 18 1 38 14 59 40 6 5 -145 0 0 39 38 31 4 29 28 62 175 -22 39 30 50 39 46 13 38 43 21 40 34 10 -144 0 0 40 6 18 4 29 37 62 178 -23 39 58 38 40 13 58 39 11 16 41 1 47 -143 0 0 40 33 37 4 29 46 61 180 -23 40 25 58 40 41 17 39 38 45 41 28 58 -142 0 0 41 0 29 4 29 55 61 182 -24 40 52 51 41 8 7 40 5 46 41 55 40 -141 0 0 41 26 53 4 30 3 60 184 -25 41 19 17 41 34 30 40 32 20 42 21 55 -140 0 0 41 52 50 4 30 12 60 186 -26 41 45 15 42 0 25 40 58 25 42 47 41 -139 0 0 42 18 18 4 30 20 59 188 -27 42 10 44 42 25 52 41 24 3 43 13 0 -138 0 0 42 43 18 4 30 28 59 190 -28 42 35 46 42 50 51 41 49 13 43 37 50 -137 0 0 43 7 49 4 30 36 58 191 -28 43 0 19 43 15 21 42 13 55 44 2 11 -136 0 0 43 31 53 4 30 44 58 193 -29 43 24 23 43 39 22 42 38 8 44 26 4 -135 0 0 43 55 27 4 30 52 57 195 -30 43 47 59 44 2 56 43 1 53 44 49 28 -134 0 0 44 18 33 4 31 0 56 197 -31 44 11 7 44 26 0 43 25 9 45 12 23 -133 0 0 44 41 11 4 31 7 56 198 -31 44 33 46 44 48 36 43 47 57 45 34 50 -132 0 0 45 3 20 4 31 15 55 200 -32 44 55 56 45 10 44 44 10 16 45 56 49 -131 0 0 45 25 0 4 31 22 55 201 -33 45 17 38 45 32 23 44 32 7 46 18 19 -130 0 0 45 46 13 4 31 29 54 203 -34 45 38 52 45 53 34 44 53 30 46 39 20 -129 0 0 46 6 56 4 31 36 53 204 -34 45 59 37 46 14 16 45 14 24 46 59 53 -128 0 0 46 27 12 4 31 43 53 206 -35 46 19 54 46 34 30 45 34 50 47 19 58 -127 0 0 46 47 0 4 31 50 52 207 -36 46 39 43 46 54 16 45 54 48 47 39 35 -126 0 0 47 6 19 4 31 57 52 208 -36 46 59 4 47 13 35 46 14 18 47 58 45 -125 0 0 47 25 11 4 32 3 51 210 -37 47 17 58 47 32 25 46 33 20 48 17 26 -124 0 0 47 43 35 4 32 10 50 211 -38 47 36 23 47 50 48 46 51 55 48 35 40 -123 0 0 48 1 32 4 32 16 50 212 -38 47 54 22 48 8 43 47 10 2 48 53 26 -122 0 0 48 19 2 4 32 22 49 214 -39 48 11 53 48 26 11 47 27 41 49 10 46 -121 0 0 48 36 4 4 32 28 49 215 -39 48 28 56 48 43 13 47 44 54 49 27 38 -120 0 0 48 52 40 4 32 34 48 216 -40 48 45 33 48 59 47 48 1 39 49 44 4 -119 0 0 49 8 49 4 32 40 47 217 -41 49 1 44 49 15 54 48 17 58 50 0 3 -118 0 0 49 24 31 4 32 46 47 218 -41 49 17 28 49 31 36 48 33 50 50 15 36 -117 0 0 49 39 48 4 32 52 46 220 -42 49 32 45 49 46 51 48 49 15 50 30 42 -116 0 0 49 54 38 4 32 57 45 221 -42 49 47 37 50 1 40 49 4 15 50 45 23 -115 0 0 50 9 2 4 33 3 45 222 -43 50 2 3 50 16 3 49 18 48 50 59 38 -114 0 0 50 23 1 4 33 8 44 223 -44 50 16 3 50 30 0 49 32 56 51 13 28 -113 0 0 50 36 35 4 33 13 44 224 -44 50 29 38 50 43 33 49 46 39 51 26 53 -112 0 0 50 49 44 4 33 19 43 225 -45 50 42 47 50 56 40 49 59 56 51 39 53 -111 0 0 51 2 27 4 33 24 42 226 -45 50 55 32 51 9 23 50 12 48 51 52 28 -110 0 0 51 14 46 4 33 29 42 227 -46 51 7 52 51 21 41 50 25 15 52 4 39 -109 0 0 51 26 41 4 33 34 41 228 -46 51 19 48 51 33 34 50 37 18 52 16 25 -108 0 0 51 38 12 4 33 38 41 229 -47 51 31 20 51 45 4 50 48 56 52 27 48 -107 0 0 51 49 18 4 33 43 40 230 -47 51 42 27 51 56 9 51 0 10 52 38 47 -106 0 0 52 0 1 4 33 48 39 231 -47 51 53 11 52 6 51 51 11 0 52 49 22 -105 0 0 52 10 20 4 33 52 39 232 -48 52 3 31 52 17 9 51 21 26 52 59 34 -104 0 0 52 20 16 4 33 57 38 233 -48 52 13 28 52 27 4 51 31 29 53 9 23 -103 0 0 52 29 49 4 34 1 38 234 -49 52 23 2 52 36 36 51 41 8 53 18 49 -102 0 0 52 38 58 4 34 5 37 235 -49 52 32 13 52 45 45 51 50 25 53 27 52 -101 0 0 52 47 46 4 34 9 36 236 -50 52 41 1 52 54 31 51 59 18 53 36 33 -100 0 0 52 56 10 4 34 13 36 237 -50 52 49 26 53 2 55 52 7 49 53 44 52 - 99 0 0 53 4 12 4 34 17 35 238 -50 52 57 29 53 10 56 52 15 57 53 52 48 - 98 0 0 53 11 53 4 34 21 35 239 -51 53 5 10 53 18 35 52 23 42 54 0 23 - 97 0 0 53 19 11 4 34 25 34 240 -51 53 12 29 53 25 53 52 31 5 54 7 35 - 96 0 0 53 26 7 4 34 29 33 241 -52 53 19 26 53 32 48 52 38 7 54 14 27 - 95 0 0 53 32 41 4 34 33 33 242 -52 53 26 1 53 39 22 52 44 46 54 20 56 - 94 0 0 53 38 55 4 34 36 32 243 -52 53 32 15 53 45 35 52 51 4 54 27 5 - 93 0 0 53 44 46 4 34 40 32 244 -53 53 38 7 53 51 26 52 56 59 54 32 52 - 92 0 0 53 50 17 4 34 43 31 245 -53 53 43 38 53 56 56 53 2 34 54 38 19 - 91 0 0 53 55 26 4 34 47 31 246 -53 53 48 48 54 2 5 53 7 47 54 43 24 - 90 0 0 54 0 15 4 34 50 30 247 -54 53 53 37 54 6 53 53 12 39 54 48 9 - 89 0 0 54 4 42 4 34 54 29 248 -54 53 58 5 54 11 20 53 17 10 54 52 34 - 88 0 0 54 8 49 4 34 57 29 248 -54 54 2 12 54 15 26 53 21 20 54 56 38 - 87 0 0 54 12 36 4 35 0 28 249 -54 54 5 59 54 19 12 53 25 9 55 0 21 - 86 0 0 54 16 1 4 35 3 28 250 -55 54 9 25 54 22 38 53 28 37 55 3 44 - 85 0 0 54 19 7 4 35 6 27 251 -55 54 12 31 54 25 43 53 31 44 55 6 48 - 84 0 0 54 21 52 4 35 9 27 252 -55 54 15 16 54 28 28 53 34 31 55 9 31 - 83 0 0 54 24 16 4 35 12 26 253 -55 54 17 41 54 30 52 53 36 58 55 11 54 - 82 0 0 54 26 21 4 35 15 25 254 -56 54 19 46 54 32 56 53 39 3 55 13 57 - 81 0 0 54 28 5 4 35 17 25 255 -56 54 21 30 54 34 41 53 40 49 55 15 40 - 80 0 0 54 29 29 4 35 20 24 256 -56 54 22 55 54 36 5 53 42 14 55 17 4 - 79 0 0 54 30 34 4 35 23 24 256 -56 54 23 59 54 37 9 53 43 19 55 18 7 - 78 0 0 54 31 18 4 35 25 23 257 -57 54 24 43 54 37 53 53 44 3 55 18 51 - 77 0 0 54 31 42 4 35 28 22 258 -57 54 25 7 54 38 17 53 44 28 55 19 15 - 76 0 0 54 31 47 4 35 30 22 259 -57 54 25 12 54 38 22 53 44 32 55 19 20 - 75 0 0 54 31 31 4 35 33 21 260 -57 54 24 56 54 38 6 53 44 16 55 19 5 - 74 0 0 54 30 55 4 35 35 21 261 -57 54 24 20 54 37 31 53 43 40 55 18 30 - 73 0 0 54 30 0 4 35 37 20 262 -57 54 23 25 54 36 35 53 42 43 55 17 35 - 72 0 0 54 28 45 4 35 39 20 262 -57 54 22 9 54 35 20 53 41 27 55 16 21 - 71 0 0 54 27 9 4 35 42 19 263 -57 54 20 34 54 33 45 53 39 50 55 14 48 - 70 0 0 54 25 14 4 35 44 18 264 -58 54 18 38 54 31 50 53 37 53 55 12 54 - 69 0 0 54 22 59 4 35 46 18 265 -58 54 16 23 54 29 35 53 35 35 55 10 41 - 68 0 0 54 20 24 4 35 48 17 266 -58 54 13 47 54 27 0 53 32 58 55 8 8 - 67 0 0 54 17 28 4 35 50 17 267 -58 54 10 52 54 24 5 53 30 0 55 5 15 - 66 0 0 54 14 13 4 35 51 16 268 -58 54 7 36 54 20 50 53 26 42 55 2 2 - 65 0 0 54 10 37 4 35 53 16 268 -58 54 4 0 54 17 15 53 23 3 54 58 30 - 64 0 0 54 6 41 4 35 55 15 269 -58 54 0 4 54 13 20 53 19 4 54 54 37 - 63 0 0 54 2 25 4 35 57 14 270 -58 53 55 47 54 9 4 53 14 45 54 50 25 - 62 0 0 53 57 49 4 35 58 14 271 -58 53 51 10 54 4 28 53 10 5 54 45 52 - 61 0 0 53 52 52 4 36 0 13 272 -58 53 46 13 53 59 32 53 5 4 54 41 0 - 60 0 0 53 47 35 4 36 1 13 273 -58 53 40 55 53 54 15 52 59 42 54 35 46 - 59 0 0 53 41 57 4 36 3 12 273 -58 53 35 16 53 48 38 52 54 0 54 30 13 - 58 0 0 53 35 58 4 36 4 11 274 -58 53 29 17 53 42 40 52 47 56 54 24 19 - 57 0 0 53 29 38 4 36 5 11 275 -58 53 22 56 53 36 21 52 41 32 54 18 4 - 56 0 0 53 22 58 4 36 6 10 276 -58 53 16 15 53 29 41 52 34 46 54 11 29 - 55 0 0 53 15 56 4 36 8 10 277 -57 53 9 13 53 22 40 52 27 39 54 4 33 - 54 0 0 53 8 34 4 36 9 9 277 -57 53 1 49 53 15 18 52 20 11 53 57 16 - 53 0 0 53 0 50 4 36 10 8 278 -57 52 54 5 53 7 35 52 12 21 53 49 38 - 52 0 0 52 52 44 4 36 11 8 279 -57 52 45 58 52 59 31 52 4 10 53 41 39 - 51 0 0 52 44 18 4 36 12 7 280 -57 52 37 31 52 51 5 51 55 37 53 33 18 - 50 0 0 52 35 29 4 36 12 6 281 -57 52 28 41 52 42 17 51 46 42 53 24 36 - 49 0 0 52 26 19 4 36 13 6 281 -57 52 19 30 52 33 8 51 37 25 53 15 33 - 48 0 0 52 16 46 4 36 14 5 282 -56 52 9 57 52 23 36 51 27 46 53 6 7 - 47 0 0 52 6 52 4 36 14 5 283 -56 52 0 1 52 13 43 51 17 44 52 56 20 - 46 0 0 51 56 35 4 36 15 4 284 -56 51 49 44 52 3 27 51 7 21 52 46 11 - 45 0 0 51 45 56 4 36 15 3 285 -56 51 39 4 51 52 49 .. .. .. 52 35 39 - 44 0 0 51 34 55 4 36 16 3 285 -55 51 28 1 51 41 49 .. .. .. 52 24 45 - 43 0 0 51 23 30 4 36 16 2 286 -55 51 16 36 51 30 25 .. .. .. 52 13 29 - 42 0 0 51 11 43 4 36 16 1 287 -55 51 4 47 51 18 39 .. .. .. 52 1 50 - 41 0 0 50 59 33 4 36 16 1 288 -55 50 52 36 51 6 30 .. .. .. 51 49 48 Uncertainty in time = +/- 8 secs [Prediction of 2008 Nov 4.0] Data for the target star ------------------------ * name: TYC 0634-01016-1 * constellation : Aries * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 02 13 01.4549 DE: +11 33 12.360 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .020, .022 ) * V mag [mag]: 10.4 * B mag [mag]: 11.5 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (1061) Paeonia approx. diameter [km]: 22 approx. diameter ["]: .015 distance from Earth [AU]: 2.04900 * orbital information: orbit source: Preston date of fit: 2008 Nov 03 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 774 number of rejected observations: 39 time covered by the observations: 1925 Nov 09 - 2008 Sep 05 1 sigma uncertainty ellipse (major, minor, PA): 0.056, 0.041, 70° remarks: * orbital elements for (1061) Paeonia : Mean anomaly = 13.65591219 deg Arg. of pericenter = 304.63242484 deg Long. of node = 91.28677604 deg Inclination = 2.49854860 deg Eccentricity = 0.20896363 Semimajor axis = 3.13062522 AU Perihelion dist = 2.47643840 AU Mag: H = 11.74, G = 0.15 Epoch of elements : MJD 54840.18600000 TDT (2009 Jan 09.186) ------ occelmnt file for Occult BEGIN ----------------------------------- 2009 Jan 9 1061 Paeonia 4h 27.7m UT 10.4 2 13 1.455 11 33 12.36TYC 0634-01016-1 11.5 16.7 22 1.9 2.049 1.655 12.13 -142.5244 11.551 114.84 -22.09 4.4621 -0.19355 0.38464 5.66230 2.82651 0.00526 0.00191 2000 13.6228162009 1 9.00000304.632425 91.286776 2.4985490.20896363 3.1306252 2.476438412.1 5.00.15 RATE 1.7793340 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.059 0.046 72 4.10 0.046 0 54774.5020090109_1016-1 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2008 Nov 04, 05:41 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org