Update for (96) Aegle - August 3/4, 2003

Update computed by Jan Manek; issued 25 Jul 2003 23:04 +0200 (CEST)

Jan Manek's update

                    IOTA/IOTA-ES occultation update for
         (96) Aegle / TYC 6911-01232-1 = SAO 189366 on August 3/4, 2003
 visible from Khazachstan, S Russia, N Ukraine, Belarus, Lithuania and N Poland

Summary

In the night of August 3/4, 2003 a faint 10.1 mag star TYC 6911-01232-1 = SAO 189366 will be occulted by a 174 km asteroid (96) Aegle. This update is based on USNO/Flagstaff and La Silla astrometry for the asteroid and UCAC2-beta star position.

The updated path shows ~0.5 path width south shift with time ~0.3 minutes later compared to Edwin Goffin's nominal prediction.

Updated path runs due to north shift over Khazachstan ~20:56.5 UT, S Russia ~20:57.7 UT, N Ukraine ~20:58.5 UT, Belarus ~20:59.0 UT, Lithuania ~20:59.2 UT and N Poland ~20:59.5 UT. On all places the star will be less than 20 degrees above horizon. Please check the path chart for details.

Clear sky and good luck !!!

The event at one glimpse: * date and approx. UT time of event: August 3, 2003 @ 20:58 UT * magnitude of target star: 10.1 * magnitude drop [mag]: 2.4 * estimated maximum duration [s]: 11.8 * path description: given above * Goffin's original chart reference: A03_0811 The occultation path: * approximate ground width [km]: 650 * uncertainty [path widths]: 0.7 * uncertainty in time [s]: 9 * 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 6911-01232-1 = SAO 189366 = PPM 271230 = HD 195170 * constellation: Capricornus * J2000 position [h,m,s; o,',"]: 20h 30m 36.3415s; -25o 33' 36.649" * position source: recent UCAC2 beta * estimated accuracy ["]: 0.03" (0.02", 0.02") * V mag [mag]: 10.08 * B-V [mag]: +1.46 * remarks: Target star is in southwest Capricornus, about 3.5 degrees west of 4.1 mag star psi Capricorni = SAO 189664. !!! 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 30' blowup to show correctly the star in field.

Data for the minor planet: * general information: number, name: (96) Aegle approx. diameter [km]: 174 * orbital information orbit source: calculation Manek source of used astrometry: USNO/Flagstaff (Ron Stone), La Silla (Raoul Behrend) number of used observations: 122 USNO, 3 La Silla number of rejected observations: 20 USNO time covered by the observations: 1998 06 28 - 2003 07 10 rms residuals ["] (RA,DE): 0.07", 0.08" estimated positional accuracy at epoch of event ["]: 0.07", 0.07" remarks: Data for the event: * UT date and time of least geocentric approach: 20:57.5 UT * approx. V mag of minor planet at event [mag]: 12.4 * geocentric parallax of minor planet ["]: 3.787 * magnitude drop [mag]: 2.4 * estimated maximum duration [s]: 11.8 * apparent motion of minor planet ["/h]: 31.55 * angular distance to moon, phase of moon [deg,%]: 102, 34% * remarks: Elements for WinOccult: ============ cut here =========================================== 2003 Aug 03 96 Aegle 20h 57.5m UT 11-01232-1 10.1 20 30 36.342-25 33 36.65TYC 6911-01232-1 12.4 174 11.8 2.322 -2.326 2.06 41.254 -25.560 -132.82 17.44 20.9581 .06240 .95756 -8.31146 0.54254 0.00059 0.00080 2000 124.8997212003 730.00000206.596830321.83267515.938288 0.131902993.059048302.655550697.675 0.15 RATE 1.8421480 .0000000 .0000000 .0000000 .00000000 .00000000 .00000000 ============ cut here =========================================== Calculator(s): Jan Manek

Updated path location for (96) Aegle on August 3/4, 2002

Updated path location for (96) Aegle on August 3/4, 2002

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 Latitude Latitude Latitude Latitude ...................................... shortened ............................................. o ' " o ' " h m s o o o o ' " o ' " o ' " o ' " 19 0 0 58 0 55 20 59 22 5 160 -11 .. .. .. 53 56 7 .. .. .. 49 43 29 20 0 0 57 18 24 20 59 20 5 161 -12 .. .. .. 53 22 50 .. .. .. 49 15 27 21 0 0 56 38 31 20 59 17 6 162 -13 63 11 13 52 51 0 .. .. .. 48 48 26 22 0 0 56 0 57 20 59 15 7 163 -14 61 54 52 52 20 34 .. .. .. 48 22 27 23 0 0 55 25 32 20 59 12 8 164 -15 60 52 26 51 51 28 .. .. .. 47 57 28 24 0 0 54 52 5 20 59 9 8 165 -15 59 58 28 51 23 39 .. .. .. 47 33 28 25 0 0 54 20 28 20 59 6 9 165 -16 59 10 31 50 57 6 .. .. .. 47 10 26 26 0 0 53 50 33 20 59 2 10 166 -17 58 27 13 50 31 47 .. .. .. 46 48 23 27 0 0 53 22 17 20 58 59 10 167 -17 57 47 41 50 7 40 .. .. .. 46 27 17 28 0 0 52 55 34 20 58 55 11 168 -18 57 11 22 49 44 42 .. .. .. 46 7 9 29 0 0 52 30 19 20 58 51 11 169 -18 56 37 51 49 22 54 .. .. .. 45 47 56 30 0 0 52 6 30 20 58 47 12 170 -19 56 6 49 49 2 12 .. .. .. 45 29 40 31 0 0 51 44 4 20 58 43 12 171 -20 55 38 3 48 42 37 .. .. .. 45 12 20 32 0 0 51 22 59 20 58 39 13 172 -20 55 11 22 48 24 8 .. .. .. 44 55 55 33 0 0 51 3 11 20 58 34 13 173 -21 54 46 37 48 6 42 .. .. .. 44 40 25 34 0 0 50 44 39 20 58 30 14 173 -21 54 23 40 47 50 20 .. .. .. 44 25 49 35 0 0 50 27 21 20 58 25 14 174 -21 54 2 27 47 35 1 .. .. .. 44 12 9 36 0 0 50 11 17 20 58 21 14 175 -22 53 42 52 47 20 44 .. .. .. 43 59 22 37 0 0 49 56 23 20 58 16 15 176 -22 53 24 51 47 7 29 63 17 37 43 47 29 38 0 0 49 42 40 20 58 12 15 177 -23 53 8 21 46 55 14 62 5 52 43 36 29 39 0 0 49 30 6 20 58 7 15 178 -23 52 53 19 46 44 0 61 18 55 43 26 23 40 0 0 49 18 41 20 58 2 15 179 -23 52 39 42 46 33 46 60 42 47 43 17 10 41 0 0 49 8 23 20 57 57 15 180 -23 52 27 29 46 24 31 60 13 31 43 8 51 42 0 0 48 59 12 20 57 52 16 181 -24 52 16 37 46 16 16 59 49 18 43 1 24 43 0 0 48 51 7 20 57 47 16 182 -24 52 7 6 46 9 0 59 29 10 42 54 50 44 0 0 48 44 8 20 57 42 16 183 -24 51 58 53 46 2 42 59 12 29 42 49 9 45 0 0 48 38 14 20 57 38 16 184 -24 51 51 58 45 57 23 58 58 53 42 44 20 46 0 0 48 33 25 20 57 33 16 184 -24 51 46 20 45 53 2 58 48 3 42 40 24 47 0 0 48 29 41 20 57 28 16 185 -24 51 41 58 45 49 40 58 39 50 42 37 20 48 0 0 48 27 1 20 57 23 16 186 -24 51 38 52 45 47 15 58 34 5 42 35 9 49 0 0 48 25 26 20 57 18 16 187 -24 51 37 2 45 45 48 58 30 42 42 33 50 50 0 0 48 24 55 20 57 13 16 188 -24 51 36 26 45 45 20 58 29 41 42 33 23 51 0 0 48 25 28 20 57 8 16 189 -24 51 37 6 45 45 49 58 30 59 42 33 49 52 0 0 48 27 6 20 57 3 16 190 -24 51 39 1 45 47 16 58 34 38 42 35 7 53 0 0 48 29 48 20 56 59 15 191 -24 51 42 12 45 49 42 58 40 40 42 37 18 54 0 0 48 33 34 20 56 54 15 192 -24 51 46 38 45 53 5 58 49 13 42 40 21 55 0 0 48 38 25 20 56 49 15 193 -24 51 52 21 45 57 27 59 0 23 42 44 17 56 0 0 48 44 22 20 56 45 15 194 -24 51 59 22 46 2 47 59 14 23 42 49 5 57 0 0 48 51 24 20 56 40 14 194 -23 52 7 40 46 9 6 59 31 31 42 54 46 58 0 0 48 59 32 20 56 35 14 195 -23 52 17 18 46 16 24 59 52 12 43 1 21 59 0 0 49 8 47 20 56 31 14 196 -23 52 28 17 46 24 42 60 17 7 43 8 48 60 0 0 49 19 10 20 56 27 14 197 -22 52 40 38 46 33 59 60 47 21 43 17 8 61 0 0 49 30 40 20 56 23 13 198 -22 52 54 23 46 44 16 61 24 55 43 26 22 62 0 0 49 43 19 20 56 18 13 199 -22 53 9 34 46 55 33 62 14 31 43 36 29 63 0 0 49 57 8 20 56 14 12 200 -21 53 26 14 47 7 51 .. .. .. 43 47 31 64 0 0 50 12 8 20 56 11 12 201 -21 53 44 27 47 21 11 .. .. .. 43 59 26 65 0 0 50 28 20 20 56 7 11 201 -21 54 4 14 47 35 33 .. .. .. 44 12 15 66 0 0 50 45 46 20 56 3 11 202 -20 54 25 42 47 50 57 .. .. .. 44 26 0 67 0 0 51 4 27 20 56 0 10 203 -20 54 48 55 48 7 25 .. .. .. 44 40 39 68 0 0 51 24 25 20 55 56 10 204 -19 55 13 58 48 24 57 .. .. .. 44 56 13 69 0 0 51 45 42 20 55 53 9 205 -18 55 41 0 48 43 35 .. .. .. 45 12 43 70 0 0 52 8 20 20 55 50 9 206 -18 56 10 9 49 3 18 .. .. .. 45 30 9 71 0 0 52 32 22 20 55 47 8 206 -17 56 41 38 49 24 8 .. .. .. 45 48 31 72 0 0 52 57 52 20 55 44 7 207 -17 57 15 40 49 46 7 .. .. .. 46 7 50 73 0 0 53 24 52 20 55 42 7 208 -16 57 52 36 50 9 16 .. .. .. 46 28 6 74 0 0 53 53 27 20 55 40 6 209 -15 58 32 52 50 33 36 .. .. .. 46 49 21 75 0 0 54 23 42 20 55 38 5 210 -15 59 17 6 50 59 9 .. .. .. 47 11 33 76 0 0 54 55 42 20 55 36 4 211 -14 60 6 13 51 25 56 .. .. .. 47 34 45 77 0 0 55 29 36 20 55 34 4 211 -13 .. .. .. 51 54 1 .. .. .. 47 58 56 78 0 0 56 5 30 20 55 33 3 212 -12 .. .. .. 52 23 25 .. .. .. 48 24 7 ...................................... 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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