Update for (133) Cyrene - December 15/16, 2003

Update computed by Jan Manek; issued 09 Dec 2003 21:15 +0100 (CET)

Jan Manek's update

                  IOTA/IOTA-ES occultation update for
        (133) Cyrene / TYC 2373-02434-1 on December 15/16, 2003
       visible from Siberia, N Russia, Finland, Sweden and Norway


Summary

In the night of December 15/16, 2003 a faint 11.1 mag star TYC 2373-02434-1 will be occulted by a 70 km asteroid (133) Cyrene. This update is based on USNO/Flagstaff astrometry for the asteroid and UCAC2 star position.

The updated path shows ~2.5 path width north shift with time 0.1 minutes earlier compared to Edwin Goffin's nominal prediction.

Updated path runs due to north shift over Siberia around 22:48 UT, N Russia ~22:49.5 UT, Finland ~22:50.6 UT, middle Sweden ~22:51.2 UT and Norway ~22:51.6 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 15, 2003 @ 22:51 UT (Europe) * magnitude of target star: 10.2 * magnitude drop [mag]: 3.0 * estimated maximum duration [s]: 4.7 * path description: given above * Goffin's original chart reference: A03_1214 The occultation path: * approximate ground width [km]: 80 * uncertainty [path widths]: 1.4 * uncertainty in time [s]: 8 * 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 2373-02434-1 * constellation: Perseus * J2000 position [h,m,s; o,',"]: 04h 35m 05.5779s; +31o 06' 53.223" * position source: UCAC2 * estimated accuracy ["]: 0.02" (0.01", 0.02") * V mag [mag]: 11.23 * B-V [mag]: +0.52 * remarks: Target star is in very southest Perseus, about 5.1 degrees west of 2.7 mag star iota Aurigae = SAO 57522. !!! 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 12.5 * 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: (133) Cyrene approx. diameter [km]: 70 * orbital information orbit source: calculation Manek source of used astrometry: USNO/Flagstaff (Ron Stone) number of used observations: 93 USNO number of rejected observations: 9 USNO time covered by the observations: 1998 10 28 - 2003 11 23 rms residuals ["] (RA,DE): 0.07", 0.09" estimated positional accuracy at epoch of event ["]: 0.06", 0.05" remarks: Data for the event: * UT date and time of least geocentric approach: 22:52.9 UT * approx. V mag of minor planet at event [mag]: 13.1 * geocentric parallax of minor planet ["]: 3.479 * magnitude drop [mag]: 3.0 * estimated maximum duration [s]: 4.7 * apparent motion of minor planet ["/h]: 29.36 * angular distance to moon, phase of moon [deg,%]: 91, 58% * remarks: Elements for WinOccult: ============ cut here =========================================== 2003 Dec 15 133 Cyrene 22h 52.9m UT 10.2 4 35 5.578 31 6 53.22TYC 2373-02434-1 10.8 13.1 70 4.7 2.528 -2.210 -7.48 1.354 31.117 195.56 -23.28 22.8825 -.12427 .47162 -8.16054 -2.14940 0.00133 -0.00075 2000 184.207577200312 7.00000291.155584319.2486847.232487 0.141265843.058342732.626303387.985 0.13 RATE 1.8427860 .0000000 .0000000 .0000000 .00000000 .00000000 .00000000 ============ cut here =========================================== Calculator(s): Jan Manek

Updated path location for (133) Cyrene on December 15/16, 2003

Updated path location for (133) Cyrene on December 15/16, 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 112 0 0 41 31 30 22 46 50 8 305 -12 41 59 30 41 3 40 43 18 48 39 46 32 110 0 0 42 44 43 22 46 52 9 304 -13 43 12 37 42 17 0 44 31 35 41 0 11 108 0 0 43 55 45 22 46 55 11 302 -15 44 23 30 43 28 9 45 42 6 42 11 41 106 0 0 45 4 29 22 46 58 13 301 -17 45 32 5 44 37 2 46 50 15 43 20 58 104 0 0 46 10 53 22 47 2 15 300 -19 46 38 19 45 43 35 47 56 1 44 27 58 102 0 0 47 14 53 22 47 6 17 298 -20 47 42 9 46 47 47 48 59 20 45 32 38 100 0 0 48 16 30 22 47 10 18 297 -22 48 43 34 47 49 34 50 0 11 46 34 57 98 0 0 49 15 41 22 47 15 20 295 -23 49 42 33 48 48 57 50 58 36 47 34 52 96 0 0 50 12 27 22 47 20 21 293 -24 50 39 7 49 45 56 51 54 33 48 32 25 94 0 0 51 6 49 22 47 25 23 292 -26 51 33 16 50 40 31 52 48 4 49 27 35 92 0 0 51 58 48 22 47 30 24 290 -27 52 25 1 51 32 44 53 39 11 50 20 23 90 0 0 52 48 27 22 47 35 26 288 -28 53 14 26 52 22 35 54 27 56 51 10 52 88 0 0 53 35 47 22 47 41 27 286 -30 54 1 32 53 10 9 55 14 23 51 59 3 86 0 0 54 20 51 22 47 46 28 285 -31 54 46 23 53 55 27 55 58 33 52 44 58 84 0 0 55 3 42 22 47 52 30 283 -32 55 29 0 54 38 32 56 40 30 53 28 40 82 0 0 55 44 24 22 47 58 31 281 -33 56 9 28 55 19 28 57 20 19 54 10 13 80 0 0 56 23 0 22 48 3 32 279 -34 56 47 50 55 58 17 57 58 2 54 49 39 78 0 0 56 59 33 22 48 9 33 277 -35 57 24 10 56 35 3 58 33 42 55 27 1 76 0 0 57 34 7 22 48 15 34 275 -36 57 58 30 57 9 50 59 7 25 56 2 23 74 0 0 58 6 45 22 48 21 36 273 -37 58 30 56 57 42 40 59 39 13 56 35 49 72 0 0 58 37 30 22 48 27 37 271 -38 59 1 29 58 13 38 60 9 11 57 7 20 70 0 0 59 6 27 22 48 32 38 269 -38 59 30 14 58 42 47 60 37 21 57 37 1 68 0 0 59 33 39 22 48 38 39 267 -39 59 57 13 59 10 10 61 3 47 58 4 56 66 0 0 59 59 8 22 48 44 40 265 -40 60 22 31 59 35 50 61 28 33 58 31 6 64 0 0 60 22 58 22 48 50 41 263 -41 60 46 11 59 59 51 61 51 42 58 55 35 62 0 0 60 45 12 22 48 56 41 261 -41 61 8 14 60 22 14 62 13 16 59 18 27 60 0 0 61 5 52 22 49 2 42 258 -42 61 28 45 60 43 4 62 33 20 59 39 43 58 0 0 61 25 2 22 49 8 43 256 -43 61 47 46 61 2 23 62 51 55 59 59 26 56 0 0 61 42 44 22 49 13 44 254 -43 62 5 19 61 20 14 63 9 4 60 17 39 54 0 0 61 59 0 22 49 19 45 252 -44 62 21 28 61 36 37 63 24 49 60 34 24 52 0 0 62 13 52 22 49 25 46 249 -44 62 36 13 61 51 37 63 39 13 60 49 44 50 0 0 62 27 23 22 49 31 46 247 -45 62 49 37 62 5 15 63 52 18 61 3 40 48 0 0 62 39 35 22 49 37 47 245 -45 63 1 42 62 17 32 64 4 6 61 16 14 46 0 0 62 50 28 22 49 43 48 242 -46 63 12 30 62 28 31 64 14 38 61 27 27 44 0 0 63 0 5 22 49 48 49 240 -46 63 22 2 62 38 13 64 23 56 61 37 22 42 0 0 63 8 27 22 49 54 49 237 -47 63 30 19 62 46 38 64 32 1 61 46 0 40 0 0 63 15 34 22 50 0 50 235 -47 63 37 23 62 53 50 64 38 55 61 53 21 38 0 0 63 21 29 22 50 6 51 232 -47 63 43 15 62 59 48 64 44 38 61 59 27 36 0 0 63 26 12 22 50 12 51 230 -48 63 47 55 63 4 33 64 49 11 62 4 19 34 0 0 63 29 43 22 50 18 52 227 -48 63 51 25 63 8 6 64 52 35 62 7 57 32 0 0 63 32 3 22 50 24 52 225 -48 63 53 44 63 10 27 64 54 51 62 10 21 30 0 0 63 33 13 22 50 30 53 222 -49 63 54 53 63 11 37 64 55 59 62 11 33 28 0 0 63 33 12 22 50 36 54 219 -49 63 54 52 63 11 36 64 55 58 62 11 32 26 0 0 63 32 1 22 50 42 54 217 -49 63 53 42 63 10 24 64 54 50 62 10 18 24 0 0 63 29 39 22 50 48 55 214 -49 63 51 21 63 8 1 64 52 33 62 7 51 22 0 0 63 26 7 22 50 54 55 211 -50 63 47 51 63 4 27 64 49 8 62 4 11 20 0 0 63 21 23 22 51 1 56 208 -50 63 43 9 62 59 40 64 44 34 61 59 18 18 0 0 63 15 27 22 51 7 56 206 -50 63 37 17 62 53 41 64 38 50 61 53 10 16 0 0 63 8 18 22 51 13 57 203 -50 63 30 12 62 46 29 64 31 57 61 45 48 14 0 0 62 59 56 22 51 20 57 200 -50 63 21 54 62 38 2 64 23 51 61 37 9 12 0 0 62 50 19 22 51 26 58 197 -50 63 12 22 62 28 20 64 14 34 61 27 13 10 0 0 62 39 25 22 51 33 58 193 -50 63 1 34 62 17 21 64 4 2 61 15 59 8 0 0 62 27 15 22 51 40 58 190 -50 62 49 30 62 5 4 63 52 15 61 3 25 6 0 0 62 13 45 22 51 47 59 187 -50 62 36 7 61 51 28 63 39 12 60 49 30 4 0 0 61 58 54 22 51 54 59 184 -50 62 21 23 61 36 29 63 24 50 60 34 12 2 0 0 61 42 40 22 52 1 59 181 -50 62 5 17 61 20 8 63 9 7 60 17 28 0 0 0 61 25 1 22 52 8 60 177 -50 61 47 47 61 2 20 62 52 1 59 59 18 - 2 0 0 61 5 55 22 52 16 60 174 -50 61 28 50 60 43 5 62 33 30 59 39 38 - 4 0 0 60 45 19 22 52 23 60 170 -50 61 8 24 60 22 20 62 13 32 59 18 27 - 6 0 0 60 23 11 22 52 31 60 167 -50 60 46 26 60 0 2 61 52 3 58 55 42 - 8 0 0 59 59 29 22 52 39 60 163 -50 60 22 54 59 36 9 61 29 1 58 31 20 - 10 0 0 59 34 8 22 52 47 60 160 -49 59 57 45 59 10 38 61 4 24 58 5 18 - 12 0 0 59 7 7 22 52 55 60 156 -49 59 30 55 58 43 25 60 38 8 57 37 35 - 14 0 0 58 38 22 22 53 3 60 152 -49 59 2 22 58 14 28 60 10 9 57 8 6 - 16 0 0 58 7 51 22 53 12 60 149 -48 58 32 3 57 43 45 59 40 25 56 36 49 - 18 0 0 57 35 29 22 53 21 60 145 -48 57 59 54 57 11 11 59 8 53 56 3 41 - 20 0 0 57 1 14 22 53 30 60 141 -48 57 25 52 56 36 43 58 35 28 55 28 39 ...................................... 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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