Update for (925) Alphonsina - December 22/23, 2003

Update computed by Jan Manek; issued 23 Nov 2003 23:57 +0100 (CET); corrected 13 Dec 2003 01:45 +0100 (CET)

Jan Manek's update

                  IOTA/IOTA-ES occultation update for
      (925) Alphonsina / HIP 23799 = SAO 40029 on December 22/23, 2003
 visible from NE China, Siberia, N Russia, SE Estonia, Latvia, NW Lithuania,
       NW Poland, Germany, France, Spain, S Portugal and Canary Islands


Summary

In the night of December 22/23, 2003 a bright 6.2 mag star HIP 23799 = SAO 40029 will be occulted by a 57 km asteroid (925) Alphonsina. This update is based on USNO/Flagstaff, TMO and Ondrejov astrometry for the asteroid and Hipparcos star position.

The updated path shows ~6 path width south shift with no time shift compared to Edwin Goffin's nominal prediction.

Updated path runs due to south shift over NE China ~21:44 UT, Siberia 21:44.5->21:47.0 UT, N Russia around 21:48 UT, SE Estonia ~21:49.4 UT, Latvia ~21:49.5 UT, NW Lithuania ~21:49.8 UT, NW Poland ~21:50.3 UT, Germany from NE to SW around 21:51.0 UT with Berlin in path 51:50.6 UT, France from NE to SW around 21:51.9 UT, Spain from N to SW around 51:52.9 UT with Madrid just SE of path, S Portugal ~21:53.4 UT and finally Canary Islands with Teide Observatory ~21:54.9 UT. Please check the path chart for details.

Here is current station list for observers and European cities.

Clear sky and good luck !!!

The event at one glimpse: * date and approx. UT time of event: December 22, 2003 @ 21:51 UT (Europe) * magnitude of target star: 6.2 * magnitude drop [mag]: 5.9 * estimated maximum duration [s]: 4.2 * path description: given above * Goffin's original chart reference: A03_1239 The occultation path: * approximate ground width [km]: 60 * uncertainty [path widths]: 1.0 * uncertainty in time [s]: 5 * map: below * remarks: Path uncertainties are given according to nominal star position errors and expected asteroid positional accuracy. Data for the target star: * name: HIP 23799 = SAO 40029 = PPM 47726 = GSC 2907-00780 * constellation: Auriga * J2000 position [h,m,s; o,',"]: 05h 06m 49.5539s; +43o 10' 28.931" * position source: Hipparcos * estimated accuracy ["]: 0.02" (0.01", 0.01") * V mag [mag]: 6.20 * B-V [mag]: +0.44 * remarks: Target star is in north Auriga, about 1.1 degree SE of 3.0 mag star epsilon Aurigae = SAO 39955. !!! IMPORTANT !!! Purple stars in identification chart are so called 'non-star' objects in GSC; in dense fields the 'non-stars' are often real stars or blends of close pairs. Be careful about this. Close finding chart (prepared in GUIDE8): * occulted star is in center - labeled with cross * field is 20.0x20.0 degrees * limiting magnitude is 8.0 * labeled stars have indicated SAO numbers * remarks: Second chart shows 3 degrees blowup to show correctly the star in field.

Data for the minor planet: * general information: number, name: (925) Alphonsina approx. diameter [km]: 57 * orbital information orbit source: calculation Manek source of used astrometry: USNO/Flagstaff (Ron Stone), TMO (Bill Owen), Ondrejov (Kusnirak, Sarounova, Manek), OAM (R.Stoss) number of used observations: 100 USNO, 18 TMO, 12 Ondrejov, 5 OAM number of rejected observations: 22 USNO time covered by the observations: 1998 08 02 - 2003 12 11 rms residuals ["] (RA,DE): 0.06", 0.06" estimated positional accuracy at epoch of event ["]: 0.05", 0.05" remarks: Data for the event: * UT date and time of least geocentric approach: 21:51.0 UT * approx. V mag of minor planet at event [mag]: 12.1 * geocentric parallax of minor planet ["]: 5.349 * magnitude drop [mag]: 5.9 * estimated maximum duration [s]: 4.2 * apparent motion of minor planet ["/h]: 40.89 * angular distance to moon, phase of moon [deg,%]: 162, 0% * remarks: Elements for WinOccult: ============ cut here =========================================== 2003 Dec 22 925 Alphonsina 21h 51.0m UT 6.2 5 6 49.554 43 10 28.93HIP 23799 6.6 12.1 57 4.2 1.644 -3.024 -24.03 17.905 43.182 211.90 -23.44 21.8508 -.09316 .12843 -6.18571 -4.48962 0.00130 -0.00189 2000 306.25384920031217.00000202.447424299.80229421.073065 0.080648732.699946142.482198918.335 0.15 RATE 2.2216280 .0000000 .0000000 .0000000 .00000000 .00000000 .00000000 ============ cut here =========================================== Calculator(s): Jan Manek

Updated path location for (925) Alphonsina on December 22/23, 2003

Updated path location for (925) Alphonsina on December 22/23, 2003

Path coordinates: Centre Star Star Sun Path Limits Error Limits E. Longitude Latitude U.T. Alt Az Alt Limit 1 Limit 2 Limit 3 Limit 4 ...................................... shortened ............................................. o ' " o ' " h m s o o o o ' " o ' " o ' " o ' " Latitude Latitude Latitude Latitude 138 0 0 38 1 26 21 43 24 9 319 -4 38 26 0 37 36 55 39 17 14 36 46 2 137 0 0 38 58 30 21 43 25 10 319 -5 39 22 50 38 34 12 40 13 35 37 43 48 136 0 0 39 53 55 21 43 27 11 318 -6 40 18 1 39 29 51 41 8 17 38 39 55 135 0 0 40 47 43 21 43 29 12 317 -7 41 11 35 40 23 53 42 1 21 39 34 25 134 0 0 41 39 54 21 43 31 13 317 -8 42 3 32 41 16 18 42 52 50 40 27 20 133 0 0 42 30 31 21 43 34 14 316 -9 42 53 56 42 7 9 43 42 43 41 18 39 132 0 0 43 19 35 21 43 36 15 315 -10 43 42 46 42 56 27 44 31 4 42 8 26 131 0 0 44 7 8 21 43 38 17 315 -11 44 30 5 43 44 14 45 17 54 42 56 42 130 0 0 44 53 12 21 43 41 18 314 -12 45 15 55 44 30 31 46 3 15 43 43 27 129 0 0 45 37 48 21 43 44 19 313 -13 46 0 17 45 15 21 46 47 9 44 28 46 128 0 0 46 20 59 21 43 46 20 313 -14 46 43 15 45 58 46 47 29 38 45 12 38 127 0 0 47 2 47 21 43 49 21 312 -15 47 24 49 46 40 47 48 10 45 45 55 7 126 0 0 47 43 13 21 43 52 22 311 -16 48 5 2 47 21 26 48 50 30 46 36 14 125 0 0 48 22 20 21 43 55 22 310 -16 48 43 56 48 0 47 49 28 57 47 16 1 124 0 0 49 0 11 21 43 58 23 310 -17 49 21 33 48 38 50 50 6 7 47 54 30 123 0 0 49 36 46 21 44 1 24 309 -18 49 57 56 49 15 37 50 42 3 48 31 44 122 0 0 50 12 8 21 44 4 25 308 -19 50 33 5 49 51 12 51 16 46 49 7 44 121 0 0 50 46 19 21 44 7 26 307 -19 51 7 4 50 25 35 51 50 19 49 42 33 120 0 0 51 19 21 21 44 10 27 306 -20 51 39 54 50 58 49 52 22 44 50 16 12 119 0 0 51 51 16 21 44 13 28 306 -21 52 11 38 51 30 56 52 54 3 50 48 43 118 0 0 52 22 7 21 44 16 28 305 -22 52 42 16 52 1 58 53 24 18 51 20 9 117 0 0 52 51 54 21 44 19 29 304 -22 53 11 52 52 31 56 53 53 30 51 50 31 116 0 0 53 20 40 21 44 23 30 303 -23 53 40 27 53 0 53 54 21 42 52 19 50 115 0 0 53 48 26 21 44 26 31 302 -24 54 8 3 53 28 51 54 48 55 52 48 10 114 0 0 54 15 15 21 44 29 31 302 -24 54 34 41 53 55 50 55 15 11 53 15 31 113 0 0 54 41 7 21 44 32 32 301 -25 55 0 23 54 21 53 55 40 32 53 41 55 112 0 0 55 6 6 21 44 35 33 300 -25 55 25 12 54 47 1 56 4 59 54 7 24 111 0 0 55 30 11 21 44 38 33 299 -26 55 49 8 55 11 17 56 28 35 54 32 0 110 0 0 55 53 26 21 44 42 34 298 -27 56 12 13 55 34 41 56 51 20 54 55 43 109 0 0 56 15 51 21 44 45 35 297 -27 56 34 28 55 57 15 57 13 16 55 18 36 108 0 0 56 37 27 21 44 48 35 296 -28 56 55 56 56 19 0 57 34 25 55 40 40 107 0 0 56 58 17 21 44 51 36 295 -28 57 16 37 56 39 58 57 54 47 56 1 57 106 0 0 57 18 21 21 44 54 37 295 -29 57 36 32 57 0 11 58 14 25 56 22 27 105 0 0 57 37 41 21 44 57 37 294 -29 57 55 44 57 19 39 58 33 20 56 42 12 104 0 0 57 56 18 21 45 0 38 293 -30 58 14 13 57 38 24 58 51 32 57 1 14 103 0 0 58 14 13 21 45 4 39 292 -30 58 32 0 57 56 27 59 9 3 57 19 32 102 0 0 58 31 28 21 45 7 39 291 -31 58 49 7 58 13 49 59 25 55 57 37 10 101 0 0 58 48 3 21 45 10 40 290 -31 59 5 35 58 30 31 59 42 7 57 54 7 100 0 0 59 3 59 21 45 13 40 289 -32 59 21 24 58 46 35 59 57 42 58 10 25 99 0 0 59 19 18 21 45 16 41 288 -32 59 36 37 59 2 0 60 12 40 58 26 5 98 0 0 59 34 1 21 45 19 41 287 -33 59 51 13 59 16 49 60 27 2 58 41 7 97 0 0 59 48 8 21 45 22 42 286 -33 60 5 13 59 31 3 60 40 50 58 55 34 96 0 0 60 1 40 21 45 25 42 286 -34 60 18 39 59 44 41 60 54 3 59 9 25 95 0 0 60 14 38 21 45 28 43 285 -34 60 31 32 59 57 45 61 6 43 59 22 41 94 0 0 60 27 3 21 45 31 43 284 -35 60 43 51 60 10 16 61 18 51 59 35 23 93 0 0 60 38 56 21 45 34 44 283 -35 60 55 39 60 22 14 61 30 28 59 47 33 92 0 0 60 50 18 21 45 37 45 282 -35 61 6 55 60 33 41 61 41 33 59 59 10 91 0 0 61 1 8 21 45 40 45 281 -36 61 17 41 60 44 36 61 52 8 60 10 16 90 0 0 61 11 28 21 45 43 46 280 -36 61 27 56 60 55 1 62 2 14 60 20 51 89 0 0 61 21 19 21 45 46 46 279 -37 61 37 43 61 4 57 62 11 51 60 30 55 88 0 0 61 30 41 21 45 49 47 278 -37 61 47 0 61 14 23 62 20 59 60 40 30 87 0 0 61 39 34 21 45 52 47 277 -37 61 55 49 61 23 20 62 29 40 60 49 36 86 0 0 61 48 0 21 45 55 47 276 -38 62 4 11 61 31 50 62 37 53 60 58 14 85 0 0 61 55 58 21 45 58 48 275 -38 62 12 5 61 39 51 62 45 39 61 6 23 84 0 0 62 3 29 21 46 1 48 274 -38 62 19 33 61 47 26 62 53 0 61 14 5 83 0 0 62 10 34 21 46 4 49 273 -39 62 26 34 61 54 34 62 59 54 61 21 20 82 0 0 62 17 12 21 46 7 49 272 -39 62 33 10 62 1 16 63 6 23 61 28 8 81 0 0 62 23 25 21 46 10 50 271 -40 62 39 20 62 7 32 63 12 27 61 34 30 80 0 0 62 29 13 21 46 13 50 270 -40 62 45 5 62 13 22 63 18 6 61 40 26 79 0 0 62 34 36 21 46 16 51 269 -40 62 50 25 62 18 47 63 23 21 61 45 57 78 0 0 62 39 34 21 46 19 51 268 -41 62 55 21 62 23 48 63 28 12 61 51 2 77 0 0 62 44 8 21 46 22 52 267 -41 62 59 52 62 28 24 63 32 39 61 55 42 76 0 0 62 48 17 21 46 25 52 266 -41 63 4 0 62 32 35 63 36 43 61 59 58 75 0 0 62 52 3 21 46 28 53 265 -42 63 7 44 62 36 23 63 40 23 62 3 49 74 0 0 62 55 25 21 46 31 53 264 -42 63 11 5 62 39 47 63 43 40 62 7 17 73 0 0 62 58 24 21 46 34 53 263 -42 63 14 2 62 42 47 63 46 35 62 10 20 72 0 0 63 1 0 21 46 37 54 262 -43 63 16 36 62 45 24 63 49 7 62 12 59 71 0 0 63 3 12 21 46 40 54 261 -43 63 18 48 62 47 37 63 51 16 62 15 14 70 0 0 63 5 1 21 46 44 55 260 -43 63 20 36 62 49 27 63 53 3 62 17 6 69 0 0 63 6 28 21 46 47 55 259 -44 63 22 2 62 50 55 63 54 27 62 18 35 68 0 0 63 7 32 21 46 50 56 258 -44 63 23 5 62 51 59 63 55 29 62 19 40 67 0 0 63 8 13 21 46 53 56 257 -44 63 23 46 62 52 40 63 56 9 62 20 22 66 0 0 63 8 31 21 46 56 56 256 -45 63 24 4 62 52 59 63 56 27 62 20 41 65 0 0 63 8 27 21 46 59 57 255 -45 63 24 0 62 52 54 63 56 23 62 20 37 64 0 0 63 8 0 21 47 2 57 254 -45 63 23 33 62 52 27 63 55 57 62 20 9 63 0 0 63 7 10 21 47 5 58 253 -45 63 22 44 62 51 37 63 55 9 62 19 18 62 0 0 63 5 58 21 47 8 58 252 -46 63 21 32 62 50 24 63 53 58 62 18 4 61 0 0 63 4 23 21 47 12 59 251 -46 63 19 58 62 48 48 63 52 25 62 16 26 60 0 0 63 2 25 21 47 15 59 250 -46 63 18 1 62 46 49 63 50 30 62 14 25 59 0 0 63 0 4 21 47 18 59 249 -47 63 15 41 62 44 27 63 48 13 62 12 1 58 0 0 62 57 20 21 47 21 60 248 -47 63 12 58 62 41 42 63 45 33 62 9 13 57 0 0 62 54 12 21 47 25 60 246 -47 63 9 52 62 38 33 63 42 30 62 6 1 56 0 0 62 50 42 21 47 28 61 245 -48 63 6 23 62 35 0 63 39 5 62 2 25 55 0 0 62 46 47 21 47 31 61 244 -48 63 2 31 62 31 4 63 35 16 61 58 25 54 0 0 62 42 29 21 47 35 62 243 -48 62 58 15 62 26 44 63 31 4 61 54 0 53 0 0 62 37 47 21 47 38 62 242 -48 62 53 35 62 22 0 63 26 29 61 49 11 52 0 0 62 32 40 21 47 41 62 241 -49 62 48 31 62 16 51 63 21 30 61 43 57 51 0 0 62 27 9 21 47 45 63 240 -49 62 43 2 62 11 17 63 16 7 61 38 18 50 0 0 62 21 13 21 47 48 63 238 -49 62 37 9 62 5 18 63 10 19 61 32 13 49 0 0 62 14 52 21 47 52 64 237 -50 62 30 50 61 58 53 63 4 7 61 25 43 48 0 0 62 8 5 21 47 55 64 236 -50 62 24 7 61 52 3 62 57 30 61 18 46 47 0 0 62 0 52 21 47 59 65 235 -50 62 16 57 61 44 47 62 50 28 61 11 23 46 0 0 61 53 12 21 48 3 65 234 -50 62 9 21 61 37 4 62 42 59 61 3 32 45 0 0 61 45 6 21 48 6 66 232 -51 62 1 19 61 28 54 62 35 5 60 55 14 44 0 0 61 36 32 21 48 10 66 231 -51 61 52 49 61 20 16 62 26 44 60 46 29 43 0 0 61 27 31 21 48 14 66 230 -51 61 43 52 61 11 11 62 17 55 60 37 14 42 0 0 61 18 1 21 48 18 67 229 -52 61 34 27 61 1 37 62 8 39 60 27 31 41 0 0 61 8 3 21 48 22 67 227 -52 61 24 33 60 51 34 61 58 55 60 17 19 40 0 0 60 57 35 21 48 25 68 226 -52 61 14 10 60 41 1 61 48 41 60 6 36 39 0 0 60 46 37 21 48 29 68 224 -52 61 3 17 60 29 58 61 37 59 59 55 23 38 0 0 60 35 8 21 48 33 69 223 -53 60 51 53 60 18 24 61 26 46 59 43 38 37 0 0 60 23 8 21 48 38 69 222 -53 60 39 58 60 6 18 61 15 3 59 31 21 36 0 0 60 10 36 21 48 42 70 220 -53 60 27 32 59 53 41 61 2 48 59 18 32 35 0 0 59 57 31 21 48 46 70 219 -53 60 14 33 59 40 30 60 50 1 59 5 9 34 0 0 59 43 52 21 48 50 71 217 -54 60 1 0 59 26 45 60 36 41 58 51 12 33 0 0 59 29 39 21 48 55 71 215 -54 59 46 54 59 12 26 60 22 48 58 36 40 32 0 0 59 14 51 21 48 59 72 214 -54 59 32 12 58 57 31 60 8 20 58 21 32 31 0 0 58 59 27 21 49 3 72 212 -54 59 16 54 58 42 0 59 53 16 58 5 47 30 0 0 58 43 25 21 49 8 73 210 -55 59 1 0 58 25 52 59 37 36 57 49 24 29 0 0 58 26 46 21 49 13 73 208 -55 58 44 28 58 9 6 59 21 19 57 32 23 28 0 0 58 9 28 21 49 17 74 206 -55 58 27 17 57 51 40 59 4 24 57 14 42 27 0 0 57 51 29 21 49 22 74 204 -55 58 9 26 57 33 34 58 46 49 56 56 20 26 0 0 57 32 50 21 49 27 75 202 -56 57 50 54 57 14 47 58 28 34 56 37 17 25 0 0 57 13 28 21 49 32 75 200 -56 57 31 41 56 55 17 58 9 37 56 17 30 24 0 0 56 53 23 21 49 37 75 197 -56 57 11 44 56 35 3 57 49 58 55 57 0 23 0 0 56 32 33 21 49 42 76 195 -56 56 51 3 56 14 5 57 29 34 55 35 44 22 0 0 56 10 58 21 49 48 76 192 -56 56 29 36 55 52 21 57 8 26 55 13 42 21 0 0 55 48 35 21 49 53 77 189 -57 56 7 22 55 29 49 56 46 31 54 50 52 20 0 0 55 25 24 21 49 59 77 186 -57 55 44 20 55 6 29 56 23 48 54 27 12 19 0 0 55 1 23 21 50 4 78 183 -57 55 20 29 54 42 19 56 0 17 54 2 43 18 0 0 54 36 31 21 50 10 78 179 -57 54 55 46 54 17 17 55 35 54 53 37 21 17 0 0 54 10 46 21 50 16 79 175 -57 54 30 11 53 51 22 55 10 40 53 11 6 16 0 0 53 44 7 21 50 22 79 171 -57 54 3 42 53 24 33 54 44 32 52 43 56 15 0 0 53 16 32 21 50 28 79 167 -57 53 36 18 52 56 48 54 17 29 52 15 50 14 0 0 52 48 0 21 50 34 79 162 -58 53 7 57 52 28 6 53 49 30 51 46 46 13 0 0 52 18 30 21 50 40 80 157 -58 52 38 37 51 58 24 53 20 32 51 16 42 12 0 0 51 47 58 21 50 47 80 152 -58 52 8 16 51 27 42 52 50 35 50 45 38 11 0 0 51 16 25 21 50 53 80 146 -58 51 36 54 50 55 58 52 19 36 50 13 30 10 0 0 50 43 48 21 51 0 80 140 -58 51 4 28 50 23 9 51 47 33 49 40 19 9 0 0 50 10 5 21 51 7 80 134 -58 50 30 57 49 49 15 51 14 26 49 6 1 8 0 0 49 35 15 21 51 14 80 128 -58 49 56 18 49 14 14 50 40 12 48 30 36 7 0 0 48 59 16 21 51 21 80 122 -58 49 20 31 48 38 3 50 4 49 47 54 1 6 0 0 48 22 7 21 51 28 80 117 -58 48 43 34 48 0 42 49 28 17 47 16 16 5 0 0 47 43 45 21 51 36 79 111 -58 48 5 24 47 22 8 48 50 32 46 37 17 4 0 0 47 4 9 21 51 43 79 106 -58 47 26 0 46 42 21 48 11 34 45 57 5 3 0 0 46 23 18 21 51 51 79 101 -57 46 45 21 46 1 17 47 31 20 45 15 36 2 0 0 45 41 9 21 51 59 78 96 -57 46 3 24 45 18 56 46 49 49 44 32 50 1 0 0 44 57 41 21 52 7 77 92 -57 45 20 9 44 35 16 46 6 59 43 48 45 0 0 0 44 12 53 21 52 16 77 88 -57 44 35 33 43 50 16 45 22 49 43 3 19 - 1 0 0 43 26 44 21 52 24 76 84 -57 43 49 36 43 3 54 44 37 18 42 16 32 - 2 0 0 42 39 10 21 52 32 75 80 -56 43 2 15 42 16 9 43 50 23 41 28 22 - 3 0 0 41 50 13 21 52 41 74 77 -56 42 13 30 41 26 59 43 2 3 40 38 47 - 4 0 0 40 59 50 21 52 50 74 74 -56 41 23 19 40 36 24 42 12 17 39 47 47 - 5 0 0 40 8 0 21 52 59 73 72 -55 40 31 41 39 44 22 41 21 5 38 55 20 - 6 0 0 39 14 43 21 53 8 72 69 -55 39 38 36 38 50 53 40 28 25 38 1 27 - 7 0 0 38 19 58 21 53 18 71 67 -54 38 44 3 37 55 57 39 34 16 37 6 7 - 8 0 0 37 23 45 21 53 27 70 65 -54 37 48 1 36 59 32 38 38 38 36 9 18 - 9 0 0 36 26 3 21 53 37 69 63 -53 36 50 30 36 1 39 37 41 31 35 11 2 - 10 0 0 35 26 52 21 53 46 67 61 -52 35 51 30 35 2 17 36 42 54 34 11 17 - 11 0 0 34 26 13 21 53 56 66 59 -52 34 51 1 34 1 27 35 42 48 33 10 6 - 12 0 0 33 24 6 21 54 6 65 58 -51 33 49 4 32 59 10 34 41 12 32 7 27 - 13 0 0 32 20 31 21 54 16 64 56 -50 32 45 40 31 55 25 33 38 8 31 3 22 - 14 0 0 31 15 31 21 54 26 63 55 -49 31 40 49 30 50 16 32 33 38 29 57 53 - 15 0 0 30 9 6 21 54 36 61 54 -49 30 34 34 29 43 42 31 27 41 28 51 1 - 16 0 0 29 1 19 21 54 46 60 53 -48 29 26 55 28 35 46 30 20 19 27 42 48 - 17 0 0 27 52 11 21 54 57 59 51 -47 28 17 55 27 26 30 29 11 36 26 33 15 - 18 0 0 26 41 45 21 55 7 57 50 -46 27 7 36 26 15 57 28 1 33 25 22 27 - 19 0 0 25 30 4 21 55 17 56 50 -45 25 56 2 25 4 9 26 50 13 24 10 25 - 20 0 0 24 17 11 21 55 27 54 49 -44 24 43 15 23 51 10 25 37 39 22 57 13 - 21 0 0 23 3 10 21 55 37 53 48 -43 23 29 19 22 37 3 24 23 55 21 42 55 ...................................... shortened ............................................. ---------------------------------------------------------------------------- Jan Manek Stefanik Observatory Private : Petrin 205 Werichova 950 118 46 Praha 1 152 00 Praha 5 - Barrandov |_|_| Czech Republic Czech Republic / \ Internet : jan.manek AT worldonline.cz |-O-O-| --------------------------------------------------------------------U---U---

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