Update for (314) Rosalia - October 10/11, 2003

Update computed by Jan Manek; issued 06 Oct 2003 22:32 +0200 (CEST)

Jan Manek's update

                   IOTA/IOTA-ES occultation update for
         (314) Rosalia / TYC 4682-00458-1 on October 10/11, 2003
                     visible possibly from Ireland


Summary

In the night of October 10/11, 2003 a faint 10.8 mag star TYC 4682-00458-1 will be occulted by a 63 km asteroid (314) Rosalia. This update is based on USNO/Flagstaff astrometry for the asteroid and UCAC2 star position.

The updated path shows ~14 path width west shift with time ~0.1 minutes later compared to Edwin Goffin's nominal prediction.

Updated path runs due to west shift solely over Atlantic Ocean. Within expected uncertainty is Ireland ~22:22 UT. Please check the path chart for details.

Clear sky and good luck !!!

The event at one glimpse: * date and approx. UT time of event: October 10, 2003 @ 22:22 UT (Europe) * magnitude of target star: 10.8 * magnitude drop [mag]: 2.3 * estimated maximum duration [s]: 5.7 * path description: given above * Goffin's original chart reference: A03_1030 The occultation path: * approximate ground width [km]: 120 * uncertainty [path widths]: 1.7 * uncertainty in time [s]: 10 * 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 4682-00458-1 * constellation: Cetus * J2000 position [h,m,s; o,',"]: 01h 28m 20.7603s; -01o 15' 32.914" * position source: UCAC2 * estimated accuracy ["]: 0.02" (0.02", 0.02") * V mag [mag]: 10.76 * B-V [mag]: +0.61 * remarks: Target star is in north Pisces, about 7.0 degrees north of 3.6 mag star theta Ceti = SAO 129274. !!! 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 13.5 * labeled stars have indicated SAO numbers * remarks: Second chart shows 30' blowup to show correctly the star in field.

Data for the minor planet: * general information: number, name: (314) Rosalia approx. diameter [km]: 62 * orbital information orbit source: calculation Manek source of used astrometry: USNO/Flagstaff (Ron Stone) number of used observations: 103 USNO number of rejected observations: 15 USNO time covered by the observations: 1998 09 30 - 2003 10 01 rms residuals ["] (RA,DE): 0.11", 0.11" estimated positional accuracy at epoch of event ["]: 0.09", 0.09" remarks: Data for the event: * UT date and time of least geocentric approach: 22:24.9 UT * approx. V mag of minor planet at event [mag]: 13.0 * geocentric parallax of minor planet ["]: 5.483 * magnitude drop [mag]: 2.3 * estimated maximum duration [s]: 5.7 * apparent motion of minor planet ["/h]: 33.61 * angular distance to moon, phase of moon [deg,%]: 9, 100% * remarks: Elements for WinOccult: ============ cut here =========================================== 2003 Oct 10 314 Rosalia 22h 24.9m UT 10.8 1 28 20.760- 1 15 32.91TYC 4682-00458-1 11.4 13.0 62 5.7 1.604 -1.645 -22.84 -333.258 -1.252 -159.48 -6.76 22.4156 -.57612 .62199 -4.49941 -4.16743 -0.00062 0.00079 2000 12.2171469200310 8.00000190.188055170.61283212.571874 0.182864943.147875252.572239239.505 0.15 RATE 1.7647281 .0000000 .0000000 .0000000 .00000000 .00000000 .00000000 ============ cut here =========================================== Calculator(s): Jan Manek

Updated path location for (314) Rosalia on October 10/11, 2003

Updated path location for (314) Rosalia on October 10/11, 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 ............................................. Longitude Longitude Longitude Longitude o ' " o ' " h m s o o o o ' " o ' " o ' " o ' " - 27 48 45 76 0 0 22 19 56 7 124 -16 - 31 5 17 - 24 48 11 - 46 55 50 - 15 46 3 - 21 16 48 74 0 0 22 20 3 9 130 -18 - 23 41 30 - 18 59 6 - 33 19 19 - 11 45 20 - 17 10 14 72 0 0 22 20 11 11 134 -21 - 19 8 22 - 15 16 11 - 26 36 9 - 9 8 38 - 14 26 24 70 0 0 22 20 20 13 136 -23 - 16 7 47 - 12 47 45 - 22 22 46 - 7 25 44 - 12 36 12 68 0 0 22 20 30 15 138 -25 - 14 5 53 - 11 8 33 - 19 32 57 - 6 20 1 - 11 23 38 66 0 0 22 20 42 17 138 -27 - 12 44 36 - 10 4 14 - 17 37 20 - 5 41 27 - 10 38 53 64 0 0 22 20 54 19 139 -28 - 11 53 8 - 9 25 56 - 16 19 55 - 5 23 32 - 10 15 36 62 0 0 22 21 7 21 139 -30 - 11 24 29 - 9 7 48 - 15 31 2 - 5 21 54 - 10 9 27 60 0 0 22 21 21 22 138 -32 - 11 14 0 - 9 5 50 - 15 4 20 - 5 33 29 - 10 17 22 58 0 0 22 21 36 24 138 -33 - 11 18 22 - 9 17 13 - 14 55 32 - 5 56 7 - 10 37 12 56 0 0 22 21 52 25 137 -35 - 11 35 15 - 9 39 55 - 15 1 36 - 6 28 13 - 11 7 19 54 0 0 22 22 9 26 136 -36 - 12 2 56 - 10 12 26 - 15 20 23 - 7 8 37 - 11 46 35 52 0 0 22 22 27 27 135 -37 - 12 40 9 - 10 53 41 - 15 50 16 - 7 56 29 - 12 34 8 50 0 0 22 22 46 29 133 -38 - 13 26 2 - 11 42 53 - 16 30 9 - 8 51 10 - 13 29 23 48 0 0 22 23 5 29 131 -39 - 14 19 56 - 12 39 29 - 17 19 14 - 9 52 17 - 14 31 57 46 0 0 22 23 26 30 130 -40 - 15 21 25 - 13 43 7 - 18 16 57 - 10 59 33 - 15 41 36 44 0 0 22 23 47 31 128 -41 - 16 30 15 - 14 53 35 - 19 23 1 - 12 12 50 - 16 58 17 42 0 0 22 24 9 31 126 -42 - 17 46 22 - 16 10 50 - 20 37 20 - 13 32 7 - 18 22 4 40 0 0 22 24 31 32 123 -42 - 19 9 52 - 17 34 57 - 21 59 58 - 14 57 29 - 19 53 14 38 0 0 22 24 55 32 121 -42 - 20 41 0 - 19 6 11 - 23 31 15 - 16 29 11 - 21 32 11 36 0 0 22 25 19 32 119 -42 - 22 20 11 - 20 44 56 - 25 11 43 - 18 7 33 - 23 19 32 34 0 0 22 25 43 31 116 -41 - 24 8 6 - 22 31 47 - 27 2 10 - 19 53 6 - 25 16 11 32 0 0 22 26 9 31 114 -41 - 26 5 42 - 24 27 35 - 29 3 51 - 21 46 31 - 27 23 22 30 0 0 22 26 35 30 111 -40 - 28 14 18 - 26 33 28 - 31 18 32 - 23 48 44 Latitude Latitude Latitude Latitude - 30 0 0 27 46 1 22 27 4 29 108 -38 28 29 15 27 3 56 31 8 26 24 46 46 - 32 0 0 26 12 42 22 27 25 28 106 -37 26 54 5 25 32 20 29 25 30 23 20 12 - 34 0 0 24 46 52 22 27 45 26 105 -36 25 26 41 24 7 57 27 51 37 22 0 9 - 36 0 0 23 28 3 22 28 4 25 103 -34 24 6 32 22 50 23 26 26 1 20 46 20 - 38 0 0 22 15 54 22 28 21 23 102 -32 22 53 14 21 39 19 25 8 6 19 38 31 - 40 0 0 21 10 6 22 28 36 22 100 -31 21 46 26 20 34 27 23 57 23 18 36 29 - 42 0 0 20 10 24 22 28 51 20 99 -29 20 45 54 19 35 33 22 53 29 17 40 4 - 44 0 0 19 16 37 22 29 4 19 98 -27 19 51 22 18 42 27 21 56 5 16 49 6 - 46 0 0 18 28 32 22 29 16 17 97 -25 19 2 40 17 54 58 21 4 56 16 3 27 - 48 0 0 17 46 2 22 29 27 15 96 -24 18 19 39 17 12 59 20 19 51 15 23 2 - 50 0 0 17 9 0 22 29 36 13 96 -22 17 42 9 16 36 22 19 40 38 14 47 43 - 52 0 0 16 37 18 22 29 44 12 95 -20 17 10 6 16 5 1 19 7 10 14 17 28 - 54 0 0 16 10 54 22 29 51 10 94 -18 16 43 24 15 38 53 18 39 22 13 52 12 - 56 0 0 15 49 43 22 29 57 8 94 -16 16 22 0 15 17 55 18 17 7 13 31 54 - 58 0 0 15 33 44 22 30 1 6 93 -14 16 5 52 15 2 5 18 0 24 13 16 31 - 60 0 0 15 22 55 22 30 4 4 92 -12 15 54 58 14 51 21 17 49 10 13 6 2 ...................................... 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@worldonline.cz |-O-O-| --------------------------------------------------------------------U---U---

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