IOTA/IOTA-ES occultation update for (358) Apollonia / TYC 0022-00825-1 event on 2009 Jan 06, 03:13 UT Visible from Summary ------- On 2009 Jan 06 UT, the 90 km diameter asteroid (358) Apollonia will occult a 11.5 mag star in the constellation Pisces for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 2.5 mag to 13.9 mag (the magnitude of the asteroid) for at most 5.1 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: 95 * date and approx. time of event: 2009 Jan 06, 03:13 - 2009 Jan 06, 03:18 UT * magnitude of target star: 11.5 * magnitude drop [mag]: 2.5 * estimated maximum duration [s]: 5.1 * Moon: 68 % sunlit, 22° distance * Sun: 91° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 113 * 1 sigma uncertainty interval [path widths]: +/- 0.44 * 1 sigma uncertainty interval [seconds]: +/- 2.7 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .029 +/- .024) * 1 sigma uncertainty ellipse (major, minor, PA): ( .029", .024", 82° ) * approx speed of asteroid's shadow [km/s]: 17.3874 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 0022-00825-1 by 358 Apollonia on 2009 Jan 6 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 -155 0 0 37 37 1 3 13 13 53 150 0 37 1 38 38 12 43 36 30 45 38 44 24 -154 0 0 38 5 14 3 13 19 53 152 -1 37 29 49 38 40 57 36 58 55 39 12 39 -153 0 0 38 33 21 3 13 25 53 153 -2 37 57 55 39 9 5 37 27 0 39 40 49 -152 0 0 39 1 21 3 13 31 53 155 -3 38 25 55 39 37 6 37 54 59 40 8 51 -151 0 0 39 29 14 3 13 37 53 157 -4 38 53 47 40 5 0 38 22 50 40 36 45 -150 0 0 39 56 58 3 13 42 52 159 -5 39 21 31 40 32 45 38 50 34 41 4 30 -149 0 0 40 24 33 3 13 48 52 161 -6 39 49 6 41 0 20 39 18 9 41 32 6 -148 0 0 40 51 58 3 13 54 52 163 -7 40 16 31 41 27 45 39 45 34 41 59 31 -147 0 0 41 19 13 3 14 0 52 164 -8 40 43 45 41 54 59 40 12 49 42 26 44 -146 0 0 41 46 15 3 14 5 52 166 -8 41 10 49 42 22 1 40 39 53 42 53 46 -145 0 0 42 13 6 3 14 11 51 168 -9 41 37 40 42 48 51 41 6 45 43 20 35 -144 0 0 42 39 44 3 14 16 51 170 -10 42 4 19 43 15 28 41 33 24 43 47 11 -143 0 0 43 6 8 3 14 22 51 171 -11 42 30 44 43 41 51 41 59 50 44 13 33 -142 0 0 43 32 18 3 14 27 50 173 -12 42 56 55 44 7 59 42 26 3 44 39 40 -141 0 0 43 58 13 3 14 32 50 175 -13 43 22 52 44 33 52 42 52 1 45 5 31 -140 0 0 44 23 52 3 14 38 50 176 -14 43 48 33 44 59 30 43 17 44 45 31 7 -139 0 0 44 49 16 3 14 43 49 178 -14 44 13 59 45 24 51 43 43 12 45 56 26 -138 0 0 45 14 23 3 14 48 49 179 -15 44 39 8 45 49 56 44 8 23 46 21 29 -137 0 0 45 39 12 3 14 53 48 181 -16 45 4 1 46 14 43 44 33 18 46 46 14 -136 0 0 46 3 45 3 14 58 48 183 -17 45 28 36 46 39 12 44 57 55 47 10 41 -135 0 0 46 27 59 3 15 3 48 184 -18 45 52 53 47 3 24 45 22 15 47 34 50 -134 0 0 46 51 55 3 15 7 47 185 -18 46 16 53 47 27 17 45 46 17 47 58 40 -133 0 0 47 15 33 3 15 12 47 187 -19 46 40 33 47 50 51 46 10 1 48 22 10 -132 0 0 47 38 51 3 15 17 46 188 -20 47 3 55 48 14 5 46 33 25 48 45 22 -131 0 0 48 1 50 3 15 21 46 190 -21 47 26 57 48 37 0 46 56 31 49 8 13 -130 0 0 48 24 29 3 15 26 45 191 -21 47 49 40 48 59 35 47 19 17 49 30 45 -129 0 0 48 46 48 3 15 30 45 192 -22 48 12 3 49 21 50 47 41 44 49 52 56 -128 0 0 49 8 47 3 15 34 44 194 -23 48 34 6 49 43 45 48 3 50 50 14 47 -127 0 0 49 30 25 3 15 38 44 195 -23 48 55 49 50 5 19 48 25 36 50 36 17 -126 0 0 49 51 43 3 15 43 43 196 -24 49 17 11 50 26 32 48 47 2 50 57 26 -125 0 0 50 12 39 3 15 47 43 198 -25 49 38 12 50 47 24 49 8 7 51 18 14 -124 0 0 50 33 15 3 15 51 42 199 -26 49 58 53 51 7 55 49 28 52 51 38 41 -123 0 0 50 53 30 3 15 55 42 200 -26 50 19 12 51 28 5 49 49 15 51 58 46 -122 0 0 51 13 23 3 15 58 41 201 -27 50 39 10 51 47 53 50 9 17 52 18 30 -121 0 0 51 32 55 3 16 2 41 203 -28 50 58 47 52 7 20 50 28 59 52 37 53 -120 0 0 51 52 6 3 16 6 40 204 -28 51 18 3 52 26 26 50 48 19 52 56 53 -119 0 0 52 10 55 3 16 9 39 205 -29 51 36 57 52 45 10 51 7 17 53 15 33 -118 0 0 52 29 23 3 16 13 39 206 -29 51 55 30 53 3 32 51 25 55 53 33 51 -117 0 0 52 47 29 3 16 16 38 207 -30 52 13 42 53 21 33 51 44 11 53 51 47 -116 0 0 53 5 14 3 16 20 38 208 -31 52 31 32 53 39 13 52 2 5 54 9 21 -115 0 0 53 22 37 3 16 23 37 209 -31 52 49 0 53 56 31 52 19 39 54 26 35 -114 0 0 53 39 39 3 16 26 37 211 -32 53 6 8 54 13 27 52 36 51 54 43 26 -113 0 0 53 56 20 3 16 29 36 212 -32 53 22 54 54 30 3 52 53 41 54 59 56 -112 0 0 54 12 39 3 16 32 36 213 -33 53 39 18 54 46 16 53 10 10 55 16 5 -111 0 0 54 28 37 3 16 36 35 214 -33 53 55 22 55 2 9 53 26 19 55 31 53 -110 0 0 54 44 14 3 16 38 34 215 -34 54 11 4 55 17 41 53 42 5 55 47 20 -109 0 0 54 59 30 3 16 41 34 216 -35 54 26 25 55 32 51 53 57 31 56 2 25 -108 0 0 55 14 25 3 16 44 33 217 -35 54 41 26 55 47 40 54 12 36 56 17 9 -107 0 0 55 28 59 3 16 47 33 218 -36 54 56 5 56 2 9 54 27 20 56 31 33 -106 0 0 55 43 13 3 16 50 32 219 -36 55 10 24 56 16 17 54 41 44 56 45 36 -105 0 0 55 57 5 3 16 52 32 220 -37 55 24 22 56 30 4 54 55 46 56 59 19 -104 0 0 56 10 38 3 16 55 31 221 -37 55 37 59 56 43 31 55 9 28 57 12 41 -103 0 0 56 23 49 3 16 57 31 222 -38 55 51 16 56 56 38 55 22 50 57 25 42 -102 0 0 56 36 41 3 17 0 30 223 -38 56 4 13 57 9 24 55 35 51 57 38 24 -101 0 0 56 49 13 3 17 2 30 224 -38 56 16 50 57 21 50 55 48 32 57 50 46 -100 0 0 57 1 24 3 17 4 29 225 -39 56 29 7 57 33 57 56 0 53 58 2 48 - 99 0 0 57 13 16 3 17 7 29 226 -39 56 41 4 57 45 44 56 12 54 58 14 30 - 98 0 0 57 24 49 3 17 9 28 227 -40 56 52 41 57 57 11 56 24 36 58 25 53 - 97 0 0 57 36 1 3 17 11 28 228 -40 57 3 58 58 8 19 56 35 58 58 36 56 - 96 0 0 57 46 55 3 17 13 27 229 -41 57 14 57 58 19 8 56 47 0 58 47 40 - 95 0 0 57 57 29 3 17 15 26 230 -41 57 25 36 58 29 37 56 57 43 58 58 6 - 94 0 0 58 7 45 3 17 17 26 231 -41 57 35 56 58 39 48 57 8 7 59 8 12 - 93 0 0 58 17 41 3 17 19 25 232 -42 57 45 57 58 49 40 57 18 12 59 18 0 - 92 0 0 58 27 19 3 17 21 25 233 -42 57 55 39 58 59 13 57 27 58 59 27 29 - 91 0 0 58 36 38 3 17 23 24 234 -43 58 5 3 59 8 28 57 37 25 59 36 40 - 90 0 0 58 45 39 3 17 25 24 235 -43 58 14 8 59 17 24 57 46 34 59 45 33 - 89 0 0 58 54 22 3 17 26 23 236 -43 58 22 54 59 26 3 57 55 24 59 54 7 - 88 0 0 59 2 46 3 17 28 23 237 -44 58 31 23 59 34 23 58 3 56 60 2 24 - 87 0 0 59 10 53 3 17 30 22 237 -44 58 39 34 59 42 26 58 12 10 60 10 23 - 86 0 0 59 18 42 3 17 31 22 238 -44 58 47 26 59 50 11 58 20 6 60 18 5 - 85 0 0 59 26 13 3 17 33 21 239 -45 58 55 1 59 57 38 58 27 44 60 25 29 - 84 0 0 59 33 27 3 17 34 21 240 -45 59 2 18 60 4 48 58 35 4 60 32 36 - 83 0 0 59 40 23 3 17 36 20 241 -45 59 9 18 60 11 41 58 42 7 60 39 25 - 82 0 0 59 47 2 3 17 37 20 242 -46 59 16 0 60 18 17 58 48 52 60 45 58 - 81 0 0 59 53 23 3 17 39 19 243 -46 59 22 25 60 24 35 58 55 20 60 52 13 - 80 0 0 59 59 28 3 17 40 19 244 -46 59 28 33 60 30 37 59 1 30 60 58 12 - 79 0 0 60 5 16 3 17 41 18 245 -47 59 34 24 60 36 22 59 7 24 61 3 54 - 78 0 0 60 10 47 3 17 43 18 246 -47 59 39 57 60 41 50 59 13 0 61 9 20 - 77 0 0 60 16 2 3 17 44 17 247 -47 59 45 15 60 47 2 59 18 19 61 14 29 - 76 0 0 60 21 0 3 17 45 17 248 -47 59 50 15 60 51 57 59 23 22 61 19 22 - 75 0 0 60 25 41 3 17 46 16 248 -48 59 54 59 60 56 36 59 28 8 61 23 59 - 74 0 0 60 30 6 3 17 47 16 249 -48 59 59 26 61 0 59 59 32 37 61 28 20 - 73 0 0 60 34 15 3 17 49 15 250 -48 60 3 37 61 5 5 59 36 50 61 32 25 - 72 0 0 60 38 8 3 17 50 15 251 -48 60 7 32 61 8 56 59 40 46 61 36 13 - 71 0 0 60 41 44 3 17 51 14 252 -49 60 11 10 61 12 31 59 44 26 61 39 46 - 70 0 0 60 45 5 3 17 52 14 253 -49 60 14 32 61 15 49 59 47 50 61 43 3 - 69 0 0 60 48 9 3 17 52 13 254 -49 60 17 38 61 18 52 59 50 57 61 46 5 - 68 0 0 60 50 58 3 17 53 13 255 -49 60 20 29 61 21 40 59 53 49 61 48 51 - 67 0 0 60 53 31 3 17 54 12 256 -49 60 23 3 61 24 11 59 56 24 61 51 21 - 66 0 0 60 55 48 3 17 55 12 257 -50 60 25 21 61 26 27 59 58 43 61 53 36 - 65 0 0 60 57 49 3 17 56 12 257 -50 60 27 23 61 28 27 60 0 46 61 55 36 - 64 0 0 60 59 35 3 17 57 11 258 -50 60 29 10 61 30 12 60 2 34 61 57 20 - 63 0 0 61 1 5 3 17 57 11 259 -50 60 30 41 61 31 42 60 4 5 61 58 48 - 62 0 0 61 2 20 3 17 58 10 260 -50 60 31 56 61 32 56 60 5 21 62 0 2 - 61 0 0 61 3 19 3 17 59 10 261 -50 60 32 55 61 33 54 60 6 21 62 1 0 - 60 0 0 61 4 2 3 17 59 9 262 -51 60 33 39 61 34 37 60 7 5 62 1 43 - 59 0 0 61 4 30 3 18 0 9 263 -51 60 34 7 61 35 5 60 7 33 62 2 11 - 58 0 0 61 4 42 3 18 1 8 264 -51 60 34 20 61 35 18 60 7 45 62 2 23 - 57 0 0 61 4 39 3 18 1 8 264 -51 60 34 16 61 35 15 60 7 42 62 2 20 - 56 0 0 61 4 21 3 18 2 7 265 -51 60 33 58 61 34 57 60 7 23 62 2 2 - 55 0 0 61 3 47 3 18 2 7 266 -51 60 33 23 61 34 23 60 6 48 62 1 29 - 54 0 0 61 2 58 3 18 3 6 267 -51 60 32 33 61 33 34 60 5 58 62 0 41 - 53 0 0 61 1 53 3 18 3 6 268 -51 60 31 28 61 32 30 60 4 51 61 59 38 - 52 0 0 61 0 32 3 18 3 5 269 -51 60 30 6 61 31 11 60 3 29 61 58 19 - 51 0 0 60 58 56 3 18 4 5 270 -51 60 28 29 61 29 36 60 1 51 61 56 45 - 50 0 0 60 57 5 3 18 4 4 271 -51 60 26 37 61 27 45 59 59 58 61 54 56 - 49 0 0 60 54 58 3 18 4 4 272 -52 60 24 28 61 25 40 59 57 48 61 52 51 - 48 0 0 60 52 35 3 18 5 3 272 -52 60 22 4 61 23 18 59 55 23 61 50 31 - 47 0 0 60 49 57 3 18 5 3 273 -52 60 19 24 61 20 42 59 52 42 61 47 56 - 46 0 0 60 47 3 3 18 5 2 274 -52 60 16 29 61 17 50 59 49 45 61 45 5 - 45 0 0 60 43 53 3 18 5 2 275 -52 60 13 17 61 14 42 59 46 31 61 41 59 - 44 0 0 60 40 28 3 18 5 1 276 -52 60 9 50 61 11 18 59 43 2 61 38 37 - 43 0 0 60 36 46 3 18 5 1 277 -52 60 6 6 61 7 39 59 39 17 61 35 0 - 42 0 0 60 32 49 3 18 5 0 278 -52 60 2 6 61 3 44 59 35 15 61 31 7 Uncertainty in time = +/- 3 secs [Prediction of 2008 Nov 4.0] Data for the target star ------------------------ * name: TYC 0022-00825-1 * constellation : Pisces * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 01 07 06.9464 DE: +03 59 20.809 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .021, .021 ) * V mag [mag]: 11.5 * B mag [mag]: 12.1 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (358) Apollonia approx. diameter [km]: 90 approx. diameter ["]: .055 distance from Earth [AU]: 2.25300 * orbital information: orbit source: Preston date of fit: 2008 Nov 03 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 924 number of rejected observations: 135 time covered by the observations: 1901 Dec 04 - 2008 Sep 14 1 sigma uncertainty ellipse (major, minor, PA): 0.020, 0.011, 72° remarks: * orbital elements for (358) Apollonia : Mean anomaly = 341.40439008 deg Arg. of pericenter = 253.44775158 deg Long. of node = 172.23935126 deg Inclination = 3.54768720 deg Eccentricity = 0.14987681 Semimajor axis = 2.87757756 AU Perihelion dist = 2.44629541 AU Mag: H = 9.09, G = 0.15 Epoch of elements : MJD 54837.13400000 TDT (2009 Jan 06.134) ------ occelmnt file for Occult BEGIN ----------------------------------- 2009 Jan 6 358 Apollonia 3h 13.2m UT 11.5 1 7 6.946 3 59 20.81TYC 0022-00825-1 12.1 13.9 90 5.1 2.253 2.350 15.21 -137.3669 3.985 133.14 -22.49 3.2204 -0.24039 0.55298 9.00718 3.89672 0.00539 0.00222 2000 339.96394520081230.00000253.447752172.239351 3.5476870.14987681 2.8775776 2.4462954 9.1 5.00.15 RATE 2.0191270 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.029 0.024 82 1.44 0.024 0 54774.5020090106_0825-1 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2008 Nov 04, 05:21 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org