Update for (585) Bilkis - December 11/12, 2003

Update computed by Jan Manek; issued 06 Dec 2003 22:27 +0100 (CET)

Jan Manek's update

                  IOTA/IOTA-ES occultation update for
        (585) Bilkis / TYC 0688-00862-1 on December 11/12, 2003
      visible from Russia, Estonia, S Sweden, N Denmark, Scotland,
                      North Ireland and NE USA


Summary

In the night of December 11/12, 2003 a faint 11.7 mag star TYC 0688-00862-1 will be occulted by a 60 km asteroid (585) Bilkis. This update is based on USNO/Flagstaff and TMO astrometry for the asteroid and UCAC2 star position.

The updated path shows ~0.5 path width north shift with time 0.2 minutes later compared to Edwin Goffin's nominal prediction.

Updated path runs due to north shift over Russia ~23:00 to 23:03 UT with Vologda in path ~23:02.6 UT, Estonia with Tartu in path ~23:03.7 UT, S Sweden ~23:04.8 UT, N Denmark ~23:05.3 UT, Scotland ~23:06.6 UT, North Ireland ~23:07.0 UT and NE USA ~23:13.5 UT. Please check the path chart for details.

Target is western star in a 15" wide pair and is probably the fainter one.

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 11, 2003 @ 23:05 UT (Europe) * magnitude of target star: 11.7 * magnitude drop [mag]: 1.8 * estimated maximum duration [s]: 5.9 * path description: given above * Goffin's original chart reference: A03_1227 The occultation path: * approximate ground width [km]: 90 * uncertainty [path widths]: 0.85 * 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: TYC 0688-00862-1 * constellation: Orion * J2000 position [h,m,s; o,',"]: 04h 53m 43.4570s; +09o 46' 41.513" * position source: UCAC2 * estimated accuracy ["]: 0.03" (0.03", 0.03") * V mag [mag]: 11.73 * B-V [mag]: +1.16 * remarks: Target star is in northwest Orion, about 29' southwest of 4.7 mag star pi1 Orionis = SAO 94201. Target is western star in a 15" wide pair and is probably the fainter one. !!! 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 3.0x3.0 degrees * limiting magnitude is 13.0 * 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: (585) Bilkis approx. diameter [km]: 60 * orbital information orbit source: calculation Manek source of used astrometry: USNO/Flagstaff (Ron Stone), TMO (Bill Owen) number of used observations: 88 USNO, 18 TMO number of rejected observations: 9 USNO, 1 TMO time covered by the observations: 1998 06 12 - 2003 10 26 rms residuals ["] (RA,DE): 0.07", 0.08" estimated positional accuracy at epoch of event ["]: 0.05", 0.05" remarks: Data for the event: * UT date and time of least geocentric approach: 23:06.7 UT * approx. V mag of minor planet at event [mag]: 13.3 * geocentric parallax of minor planet ["]: 6.597 * magnitude drop [mag]: 1.8 * estimated maximum duration [s]: 5.9 * apparent motion of minor planet ["/h]: 37.89 * angular distance to moon, phase of moon [deg,%]: 44, 91% * remarks: Elements for WinOccult: ============ cut here =========================================== 2003 Dec 11 585 Bilkis 23h 6.7m UT 11.7 4 53 43.457 9 46 41.51TYC 0688-00862-1 12.9 13.3 60 5.9 1.333 -2.535 -5.59 6.517 9.781 191.67 -23.02 23.1110 -.10637 .71236 -5.68071 -0.84861 0.00045 0.00131 2000 299.818599200312 7.00000328.282551180.3827337.556771 0.129541332.430200062.1153887210.45 0.15 RATE 2.6016030 .0000000 .0000000 .0000000 .00000000 .00000000 .00000000 ============ cut here =========================================== Calculator(s): Jan Manek

Updated path location for (585) Bilkis on December 11/12, 2003

Updated path location for (585) Bilkis on December 11/12, 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 ' " Longitude Longitude Longitude Longitude 85 0 0 57 30 7 23 0 0 15 264 -29 57 53 59 57 6 26 58 34 29 56 27 1 84 0 0 57 36 10 23 0 2 16 263 -29 58 0 1 57 12 29 58 40 29 56 33 6 83 0 0 57 42 2 23 0 5 16 262 -30 58 5 52 57 18 23 58 46 18 56 39 1 82 0 0 57 47 44 23 0 7 17 262 -31 58 11 32 57 24 5 58 51 57 56 44 46 81 0 0 57 53 15 23 0 10 17 261 -31 58 17 2 57 29 38 58 57 25 56 50 20 80 0 0 57 58 36 23 0 12 18 260 -32 58 22 22 57 35 0 59 2 43 56 55 43 79 0 0 58 3 47 23 0 15 18 259 -32 58 27 32 57 40 11 59 7 51 57 0 57 78 0 0 58 8 47 23 0 17 19 258 -33 58 32 31 57 45 13 59 12 48 57 5 59 77 0 0 58 13 37 23 0 20 19 257 -33 58 37 20 57 50 3 59 17 36 57 10 52 76 0 0 58 18 16 23 0 23 20 256 -34 58 41 59 57 54 44 59 22 13 57 15 34 75 0 0 58 22 45 23 0 26 20 255 -34 58 46 27 57 59 14 59 26 39 57 20 5 74 0 0 58 27 4 23 0 29 21 254 -35 58 50 45 58 3 34 59 30 56 57 24 26 73 0 0 58 31 13 23 0 32 21 253 -35 58 54 53 58 7 43 59 35 2 57 28 37 72 0 0 58 35 11 23 0 35 22 252 -36 58 58 50 58 11 42 59 38 58 57 32 37 71 0 0 58 38 59 23 0 38 22 252 -36 59 2 37 58 15 31 59 42 44 57 36 27 70 0 0 58 42 36 23 0 41 23 251 -37 59 6 14 58 19 9 59 46 19 57 40 7 69 0 0 58 46 4 23 0 44 23 250 -37 59 9 41 58 22 37 59 49 45 57 43 36 68 0 0 58 49 21 23 0 48 24 249 -37 59 12 57 58 25 55 59 53 0 57 46 55 67 0 0 58 52 28 23 0 51 24 248 -38 59 16 3 58 29 2 59 56 5 57 50 3 66 0 0 58 55 25 23 0 54 25 247 -38 59 19 0 58 32 0 59 59 0 57 53 1 65 0 0 58 58 11 23 0 58 25 246 -39 59 21 45 58 34 47 60 1 45 57 55 49 64 0 0 59 0 47 23 1 1 25 245 -39 59 24 21 58 37 23 60 4 20 57 58 27 63 0 0 59 3 13 23 1 4 26 244 -40 59 26 47 58 39 50 60 6 45 58 0 54 62 0 0 59 5 29 23 1 8 26 243 -40 59 29 2 58 42 6 60 8 59 58 3 11 61 0 0 59 7 35 23 1 12 27 242 -41 59 31 7 58 44 12 60 11 4 58 5 18 60 0 0 59 9 30 23 1 15 27 241 -41 59 33 2 58 46 8 60 12 58 58 7 14 59 0 0 59 11 16 23 1 19 28 240 -42 59 34 47 58 47 54 60 14 43 58 9 0 58 0 0 59 12 51 23 1 23 28 239 -42 59 36 22 58 49 29 60 16 17 58 10 36 57 0 0 59 14 16 23 1 27 28 238 -42 59 37 47 58 50 55 60 17 41 58 12 2 56 0 0 59 15 31 23 1 30 29 237 -43 59 39 2 58 52 10 60 18 56 58 13 18 55 0 0 59 16 36 23 1 34 29 236 -43 59 40 6 58 53 15 60 20 0 58 14 23 54 0 0 59 17 30 23 1 38 30 235 -44 59 41 1 58 54 10 60 20 54 58 15 18 53 0 0 59 18 15 23 1 42 30 234 -44 59 41 46 58 54 54 60 21 39 58 16 3 52 0 0 59 18 50 23 1 46 30 233 -44 59 42 20 58 55 29 60 22 13 58 16 38 51 0 0 59 19 14 23 1 50 31 232 -45 59 42 45 58 55 53 60 22 38 58 17 2 50 0 0 59 19 28 23 1 54 31 231 -45 59 42 59 58 56 8 60 22 52 58 17 16 49 0 0 59 19 33 23 1 58 32 230 -46 59 43 4 58 56 12 60 22 57 58 17 21 48 0 0 59 19 27 23 2 3 32 229 -46 59 42 58 58 56 6 60 22 51 58 17 15 47 0 0 59 19 11 23 2 7 32 228 -46 59 42 42 58 55 50 60 22 36 58 16 59 46 0 0 59 18 46 23 2 11 33 227 -47 59 42 17 58 55 24 60 22 11 58 16 32 45 0 0 59 18 10 23 2 16 33 226 -47 59 41 41 58 54 48 60 21 35 58 15 56 44 0 0 59 17 24 23 2 20 33 225 -48 59 40 55 58 54 2 60 20 50 58 15 9 43 0 0 59 16 28 23 2 24 34 224 -48 59 40 0 58 53 6 60 19 55 58 14 12 42 0 0 59 15 22 23 2 29 34 222 -48 59 38 54 58 52 0 60 18 50 58 13 6 41 0 0 59 14 6 23 2 33 35 221 -49 59 37 39 58 50 43 60 17 35 58 11 49 40 0 0 59 12 40 23 2 38 35 220 -49 59 36 13 58 49 17 60 16 10 58 10 21 39 0 0 59 11 4 23 2 42 35 219 -49 59 34 37 58 47 40 60 14 36 58 8 44 38 0 0 59 9 18 23 2 47 36 218 -50 59 32 52 58 45 54 60 12 51 58 6 57 37 0 0 59 7 22 23 2 52 36 217 -50 59 30 56 58 43 57 60 10 56 58 4 59 36 0 0 59 5 16 23 2 56 36 216 -50 59 28 51 58 41 50 60 8 52 58 2 52 35 0 0 59 2 59 23 3 1 37 215 -51 59 26 35 58 39 34 60 6 37 58 0 34 34 0 0 59 0 33 23 3 6 37 214 -51 59 24 10 58 37 7 60 4 13 57 58 6 33 0 0 58 57 57 23 3 11 37 212 -51 59 21 34 58 34 30 60 1 38 57 55 28 32 0 0 58 55 11 23 3 16 37 211 -51 59 18 49 58 31 43 59 58 54 57 52 40 31 0 0 58 52 15 23 3 21 38 210 -52 59 15 53 58 28 46 59 56 0 57 49 42 30 0 0 58 49 8 23 3 26 38 209 -52 59 12 48 58 25 39 59 52 56 57 46 34 29 0 0 58 45 52 23 3 31 38 208 -52 59 9 32 58 22 22 59 49 42 57 43 16 28 0 0 58 42 26 23 3 36 39 207 -53 59 6 7 58 18 55 59 46 18 57 39 47 27 0 0 58 38 50 23 3 41 39 205 -53 59 2 31 58 15 18 59 42 44 57 36 9 26 0 0 58 35 3 23 3 46 39 204 -53 58 58 46 58 11 31 59 39 0 57 32 20 25 0 0 58 31 7 23 3 51 39 203 -53 58 54 51 58 7 34 59 35 6 57 28 21 24 0 0 58 27 1 23 3 56 40 202 -54 58 50 45 58 3 26 59 31 3 57 24 12 23 0 0 58 22 44 23 4 2 40 201 -54 58 46 30 57 59 9 59 26 49 57 19 54 22 0 0 58 18 18 23 4 7 40 199 -54 58 42 5 57 54 42 59 22 25 57 15 25 21 0 0 58 13 42 23 4 12 40 198 -54 58 37 29 57 50 4 59 17 52 57 10 46 20 0 0 58 8 55 23 4 18 41 197 -54 58 32 44 57 45 17 59 13 8 57 5 57 19 0 0 58 3 59 23 4 23 41 196 -55 58 27 49 57 40 19 59 8 15 57 0 57 18 0 0 57 58 52 23 4 29 41 194 -55 58 22 43 57 35 12 59 3 11 56 55 48 17 0 0 57 53 36 23 4 34 41 193 -55 58 17 28 57 29 55 58 57 58 56 50 29 16 0 0 57 48 10 23 4 40 42 192 -55 58 12 3 57 24 27 58 52 35 56 45 0 15 0 0 57 42 33 23 4 45 42 191 -55 58 6 28 57 18 50 58 47 2 56 39 20 14 0 0 57 36 47 23 4 51 42 189 -55 58 0 43 57 13 2 58 41 19 56 33 31 13 0 0 57 30 51 23 4 57 42 188 -55 57 54 48 57 7 5 58 35 26 56 27 32 12 0 0 57 24 45 23 5 2 42 187 -56 57 48 43 57 0 58 58 29 23 56 21 23 11 0 0 57 18 29 23 5 8 42 185 -56 57 42 28 56 54 40 58 23 10 56 15 4 10 0 0 57 12 3 23 5 14 43 184 -56 57 36 3 56 48 13 58 16 47 56 8 34 9 0 0 57 5 27 23 5 20 43 183 -56 57 29 28 56 41 36 58 10 15 56 1 55 8 0 0 56 58 41 23 5 25 43 182 -56 57 22 44 56 34 49 58 3 32 55 55 6 7 0 0 56 51 45 23 5 31 43 180 -56 57 15 49 56 27 52 57 56 40 55 48 8 6 0 0 56 44 40 23 5 37 43 179 -56 57 8 45 56 20 46 57 49 38 55 40 59 5 0 0 56 37 25 23 5 43 43 178 -56 57 1 31 56 13 29 57 42 26 55 33 41 4 0 0 56 30 0 23 5 49 43 176 -56 56 54 8 56 6 3 57 35 5 55 26 12 3 0 0 56 22 25 23 5 55 43 175 -56 56 46 34 55 58 27 57 27 34 55 18 34 2 0 0 56 14 41 23 6 1 43 174 -56 56 38 51 55 50 41 57 19 53 55 10 47 1 0 0 56 6 47 23 6 7 44 172 -56 56 30 58 55 42 46 57 12 2 55 2 49 0 0 0 55 58 43 23 6 14 44 171 -56 56 22 56 55 34 41 57 4 2 54 54 42 - 1 0 0 55 50 29 23 6 20 44 170 -56 56 14 43 55 26 26 56 55 52 54 46 26 - 2 0 0 55 42 7 23 6 26 44 168 -56 56 6 22 55 18 2 56 47 32 54 38 0 - 3 0 0 55 33 34 23 6 32 44 167 -56 55 57 51 55 9 29 56 39 3 54 29 24 - 4 0 0 55 24 52 23 6 38 44 165 -56 55 49 10 55 0 46 56 30 25 54 20 39 - 5 0 0 55 16 1 23 6 45 44 164 -55 55 40 20 54 51 53 56 21 37 54 11 45 - 6 0 0 55 7 1 23 6 51 44 163 -55 55 31 21 54 42 52 56 12 39 54 2 41 - 7 0 0 54 57 51 23 6 57 44 161 -55 55 22 12 54 33 41 56 3 33 53 53 28 - 8 0 0 54 48 32 23 7 4 44 160 -55 55 12 54 54 24 20 55 54 17 53 44 6 - 9 0 0 54 39 3 23 7 10 44 159 -55 55 3 27 54 14 51 55 44 52 53 34 35 - 10 0 0 54 29 26 23 7 16 43 157 -55 54 53 51 54 5 13 55 35 18 53 24 55 - 11 0 0 54 19 40 23 7 23 43 156 -54 54 44 6 53 55 25 55 25 34 53 15 6 - 12 0 0 54 9 45 23 7 29 43 155 -54 54 34 12 53 45 29 55 15 42 53 5 8 - 13 0 0 53 59 41 23 7 36 43 153 -54 54 24 9 53 35 24 55 5 41 52 55 1 ...................................... shortened ............................................. - 51 0 0 46 10 18 23 11 38 30 108 -36 46 34 59 45 45 47 47 16 56 45 5 3 - 52 0 0 45 56 28 23 11 44 29 108 -35 46 21 9 45 31 58 47 3 5 44 51 15 - 53 0 0 45 42 37 23 11 49 29 107 -35 46 7 18 45 18 8 46 49 13 44 37 25 - 54 0 0 45 28 45 23 11 55 28 106 -34 45 53 26 45 4 17 46 35 19 44 23 35 - 55 0 0 45 14 53 23 12 0 28 105 -33 45 39 32 44 50 25 46 21 25 44 9 43 - 56 0 0 45 1 0 23 12 5 27 104 -32 45 25 39 44 36 32 46 7 30 43 55 52 - 57 0 0 44 47 6 23 12 11 26 103 -32 45 11 45 44 22 39 45 53 35 43 42 0 - 58 0 0 44 33 13 23 12 16 26 102 -31 44 57 51 44 8 47 45 39 40 43 28 9 - 59 0 0 44 19 20 23 12 21 25 101 -30 44 43 57 43 54 55 45 25 45 43 14 18 - 60 0 0 44 5 28 23 12 26 25 100 -30 44 30 4 43 41 4 45 11 51 43 0 28 - 61 0 0 43 51 37 23 12 31 24 100 -29 44 16 12 43 27 13 44 57 58 42 46 39 - 62 0 0 43 37 47 23 12 35 23 99 -28 44 2 22 43 13 24 44 44 5 42 32 51 - 63 0 0 43 23 59 23 12 40 23 98 -27 43 48 33 42 59 37 44 30 15 42 19 5 - 64 0 0 43 10 13 23 12 45 22 97 -27 43 34 46 42 45 52 44 16 26 42 5 22 - 65 0 0 42 56 29 23 12 49 21 96 -26 43 21 1 42 32 9 44 2 40 41 51 40 - 66 0 0 42 42 48 23 12 53 21 96 -25 43 7 19 42 18 28 43 48 56 41 38 1 - 67 0 0 42 29 10 23 12 57 20 95 -24 42 53 39 42 4 51 43 35 15 41 24 25 - 68 0 0 42 15 34 23 13 1 19 94 -24 42 40 3 41 51 17 43 21 37 41 10 53 - 69 0 0 42 2 3 23 13 5 18 93 -23 42 26 30 41 37 46 43 8 2 40 57 24 - 70 0 0 41 48 35 23 13 9 18 93 -22 42 13 2 41 24 19 42 54 32 40 43 59 - 71 0 0 41 35 11 23 13 13 17 92 -21 41 59 37 41 10 57 42 41 5 40 30 38 - 72 0 0 41 21 52 23 13 16 16 91 -21 41 46 17 40 57 39 42 27 43 40 17 21 - 73 0 0 41 8 38 23 13 20 15 90 -20 41 33 1 40 44 26 42 14 26 40 4 10 - 74 0 0 40 55 29 23 13 23 15 90 -19 41 19 51 40 31 18 42 1 13 39 51 4 - 75 0 0 40 42 25 23 13 26 14 89 -18 41 6 46 40 18 15 41 48 7 39 38 3 - 76 0 0 40 29 27 23 13 29 13 88 -18 40 53 47 40 5 18 41 35 5 39 25 8 - 77 0 0 40 16 35 23 13 31 12 88 -17 40 40 54 39 52 28 41 22 10 39 12 19 - 78 0 0 40 3 50 23 13 34 12 87 -16 40 28 7 39 39 43 41 9 22 38 59 37 - 79 0 0 39 51 11 23 13 37 11 86 -15 40 15 28 39 27 6 40 56 40 38 47 1 - 80 0 0 39 38 40 23 13 39 10 86 -14 40 2 55 39 14 35 40 44 5 38 34 33 - 81 0 0 39 26 15 23 13 41 9 85 -14 39 50 29 39 2 12 40 31 37 38 22 12 - 82 0 0 39 13 59 23 13 43 9 84 -13 39 38 12 38 49 57 40 19 18 38 9 58 - 83 0 0 39 1 50 23 13 45 8 84 -12 39 26 2 38 37 50 40 7 6 37 57 53 - 84 0 0 38 49 50 23 13 46 7 83 -11 39 14 0 38 25 51 39 55 2 37 45 56 - 85 0 0 38 37 58 23 13 48 6 82 -10 39 2 8 38 14 0 39 43 7 37 34 7 - 86 0 0 38 26 16 23 13 49 5 82 -10 38 50 24 38 2 19 39 31 21 37 22 28 - 87 0 0 38 14 42 23 13 50 5 81 -9 38 38 49 37 50 46 39 19 44 37 10 57 - 88 0 0 38 3 18 23 13 51 4 81 -8 38 27 24 37 39 24 39 8 17 36 59 37 - 89 0 0 37 52 4 23 13 52 3 80 -7 38 16 8 37 28 11 38 57 0 36 48 26 ...................................... shortened 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