Update for (205) Martha - July 17/18, 2003

Update computed by Jan Manek; issued 13 Jul 2003 14:33 +0200 (CEST)

Jan Manek's update

                    IOTA/IOTA-ES occultation update for
            (205) Martha / TYC 5140-03455-1 on July 17/18, 2003
     visible from S Russia, S Ukraine, Moldavia, Romania, frm. Yugoslavia,
                 N Italy, S France, N Spain and N Portugal

Summary

In the night of July 17/18, 2003 a faint 11.8 mag star TYC 5140-03455-1 will be occulted by a 84 km asteroid (205) Martha. This update is based on USNO/Flagstaff astrometry for the asteroid and UCAC2-beta star position.

The updated path shows ~2.5 path width north shift with time ~1.6 minutes later compared to Edwin Goffin's nominal prediction or ~1 path width north and 0.3 minutes later compared to Eric Frappa's prediction.

Updated path runs due to north shift over S Russia ~22:37.5 UT, S Ukraine ~22:38.2 UT with Doneck and Dnepropetrovsk in path and Odessa on south limit, Moldavia ~22:38.7 UT, Romania ~2:39.2 UT, frm. Yugoslavia ~22:39.8 UT with Belgrade on south limit, N Italy ~22:40.7 UT with Bologna in path, S France around 22:41.5 UT with Nice, Marseille and Pic du Midi in path, N Spain around 22:42.4 UT and N Portugal at ~22:43.0 UT with Porto in path. Please check the path chart for details.

Clear sky and good luck !!!

The event at one glimpse: * date and approx. UT time of event: July 17, 2003 @ 22:40 UT (Europe) * magnitude of target star: 11.8 * magnitude drop [mag]: 1.7 * estimated maximum duration [s]: 7.5 * path description: given above * Goffin's original chart reference: A03_0718 The occultation path: * approximate ground width [km]: 130 * uncertainty [path widths]: 1.0 * 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 5140-03455-1 * constellation: Aquila * J2000 position [h,m,s; o,',"]: 19h 02m 05.9778s; -06o 18' 38.928" * position source: recent UCAC2 beta * estimated accuracy ["]: 0.04" (0.03", 0.03") * V mag [mag]: 11.75 * B-V [mag]: +1.78 * remarks: Target star is in south Aquila, about 1.8 degrees SW of 3.4 mag star lambda Aquilae = SAO 143021 or 35' south of 4.0 mag star 12 Aquilae = SAO 142931. Should be easy to find. !!! 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 30' blowup to show correctly the star in field.

Data for the minor planet: * general information: number, name: (205) Martha approx. diameter [km]: 84 * orbital information orbit source: calculation Manek source of used astrometry: USNO/Flagstaff (Ron Stone) number of used observations: 95 USNO number of rejected observations: 16 USNO time covered by the observations: 1998 04 04 - 2003 06 16 rms residuals ["] (RA,DE): 0.09", 0.09" estimated positional accuracy at epoch of event ["]: 0.06", 0.06" remarks: Data for the event: * UT date and time of least geocentric approach: 22:41.8 UT * approx. V mag of minor planet at event [mag]: 13.2 * geocentric parallax of minor planet ["]: 4.891 * magnitude drop [mag]: 1.7 * estimated maximum duration [s]: 7.5 * apparent motion of minor planet ["/h]: 30.88 * angular distance to moon, phase of moon [deg,%]: 64, 81% * remarks: Elements for WinOccult: ============ cut here =========================================== 2003 Jul 17 205 Martha 22h 41.8m UT 40-03455-1 11.8 19 2 5.978- 6 18 38.93TYC 5140-03455-1 13.2 84 7.5 1.798 -2.053 -4.00 9.743 -6.309 -158.90 21.14 22.6960 -.09802 .75146 -6.26261 -0.81616 0.00099 -0.00143 2000 268.1872632003 710.00000171.806238212.07977910.692896 0.036684082.777362902.675477919.235 0.15 RATE 2.1293890 .0000000 .0000000 .0000000 .00000000 .00000000 .00000000 ============ cut here =========================================== Calculator(s): Jan Manek

Updated path location for (205) Martha on July 17/18, 2002

Updated path location for (205) Martha on July 17/18, 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 ' " 70 0 0 53 37 4 22 35 57 13 241 -5 54 13 29 53 1 6 55 27 48 51 50 28 69 0 0 53 28 0 22 35 59 13 240 -5 54 4 26 52 52 2 55 18 46 51 41 22 68 0 0 53 18 52 22 36 1 14 239 -6 53 55 19 52 42 52 55 9 40 51 32 11 67 0 0 53 9 38 22 36 4 14 238 -6 53 46 6 52 33 38 55 0 29 51 22 56 66 0 0 53 0 20 22 36 6 15 237 -7 53 36 49 52 24 20 54 51 13 51 13 36 65 0 0 52 50 58 22 36 9 16 236 -7 53 27 27 52 14 57 54 41 53 51 4 12 64 0 0 52 41 31 22 36 11 16 236 -8 53 18 1 52 5 29 54 32 28 50 54 43 63 0 0 52 32 0 22 36 14 17 235 -8 53 8 30 51 55 58 54 22 59 50 45 11 62 0 0 52 22 25 22 36 17 17 234 -9 52 58 56 51 46 22 54 13 25 50 35 35 61 0 0 52 12 46 22 36 19 18 233 -9 52 49 17 51 36 43 54 3 48 50 25 55 60 0 0 52 3 4 22 36 22 18 232 -10 52 39 35 51 27 0 53 54 6 50 16 11 59 0 0 51 53 18 22 36 26 19 231 -10 52 29 49 51 17 14 53 44 21 50 6 24 58 0 0 51 43 28 22 36 29 20 230 -11 52 20 0 51 7 24 53 34 33 49 56 34 57 0 0 51 33 36 22 36 32 20 230 -11 52 10 8 50 57 31 53 24 41 49 46 41 56 0 0 51 23 40 22 36 36 21 229 -12 52 0 12 50 47 35 53 14 46 49 36 45 55 0 0 51 13 41 22 36 39 21 228 -12 51 50 14 50 37 37 53 4 48 49 26 46 54 0 0 51 3 40 22 36 43 22 227 -13 51 40 13 50 27 36 52 54 47 49 16 44 53 0 0 50 53 37 22 36 46 22 226 -13 51 30 9 50 17 32 52 44 43 49 6 41 52 0 0 50 43 31 22 36 50 23 225 -14 51 20 3 50 7 26 52 34 37 48 56 35 51 0 0 50 33 23 22 36 54 24 224 -14 51 9 55 49 57 18 52 24 29 48 46 27 50 0 0 50 23 13 22 36 58 24 223 -15 50 59 45 49 47 9 52 14 19 48 36 18 49 0 0 50 13 1 22 37 2 25 222 -15 50 49 33 49 36 57 52 4 6 48 26 7 48 0 0 50 2 48 22 37 6 25 222 -15 50 39 20 49 26 44 51 53 52 48 15 55 47 0 0 49 52 34 22 37 11 26 221 -16 50 29 5 49 16 30 51 43 37 48 5 41 46 0 0 49 42 18 22 37 15 26 220 -16 50 18 50 49 6 15 51 33 21 47 55 27 45 0 0 49 32 2 22 37 20 27 219 -17 50 8 33 48 55 59 51 23 3 47 45 11 44 0 0 49 21 45 22 37 24 27 218 -17 49 58 15 48 45 42 51 12 44 47 34 55 43 0 0 49 11 27 22 37 29 28 217 -17 49 47 57 48 35 25 51 2 25 47 24 39 42 0 0 49 1 9 22 37 34 28 216 -18 49 37 38 48 25 8 50 52 5 47 14 23 41 0 0 48 50 51 22 37 39 29 215 -18 49 27 20 48 14 50 50 41 45 47 4 6 40 0 0 48 40 33 22 37 44 29 214 -19 49 17 1 48 4 33 50 31 25 46 53 50 39 0 0 48 30 16 22 37 49 30 213 -19 49 6 43 47 54 16 50 21 6 46 43 34 38 0 0 48 19 58 22 37 54 30 212 -19 48 56 25 47 43 59 50 10 46 46 33 19 37 0 0 48 9 42 22 37 59 31 211 -20 48 46 8 47 33 44 50 0 27 46 23 5 36 0 0 47 59 26 22 38 5 31 210 -20 48 35 51 47 23 29 49 50 9 46 12 52 35 0 0 47 49 12 22 38 10 32 209 -20 48 25 36 47 13 16 49 39 52 46 2 40 34 0 0 47 38 59 22 38 16 32 208 -21 48 15 22 47 3 4 49 29 37 45 52 30 33 0 0 47 28 48 22 38 21 33 207 -21 48 5 10 46 52 53 49 19 22 45 42 21 32 0 0 47 18 38 22 38 27 33 206 -21 47 55 0 46 42 44 49 9 10 45 32 14 31 0 0 47 8 31 22 38 33 34 205 -21 47 44 51 46 32 38 48 58 59 45 22 9 30 0 0 46 58 25 22 38 39 34 204 -22 47 34 45 46 22 34 48 48 51 45 12 7 29 0 0 46 48 23 22 38 45 35 203 -22 47 24 41 46 12 32 48 38 44 45 2 7 28 0 0 46 38 22 22 38 51 35 201 -22 47 14 39 46 2 33 48 28 41 44 52 10 27 0 0 46 28 25 22 38 57 35 200 -22 47 4 41 45 52 36 48 18 40 44 42 16 26 0 0 46 18 31 22 39 3 36 199 -23 46 54 45 45 42 43 48 8 42 44 32 24 25 0 0 46 8 40 22 39 9 36 198 -23 46 44 53 45 32 53 47 58 47 44 22 37 24 0 0 45 58 52 22 39 15 36 197 -23 46 35 4 45 23 7 47 48 56 44 12 53 23 0 0 45 49 8 22 39 22 37 196 -23 46 25 19 45 13 24 47 39 8 44 3 12 22 0 0 45 39 28 22 39 28 37 195 -23 46 15 38 45 3 45 47 29 24 43 53 36 21 0 0 45 29 52 22 39 35 37 193 -24 46 6 1 44 54 11 47 19 44 43 44 3 20 0 0 45 20 21 22 39 41 38 192 -24 45 56 28 44 44 40 47 10 8 43 34 36 19 0 0 45 10 54 22 39 48 38 191 -24 45 47 0 44 35 15 47 0 37 43 25 12 18 0 0 45 1 31 22 39 54 38 190 -24 45 37 36 44 25 54 46 51 11 43 15 54 17 0 0 44 52 14 22 40 1 39 189 -24 45 28 17 44 16 38 46 41 49 43 6 40 16 0 0 44 43 2 22 40 8 39 187 -24 45 19 4 44 7 27 46 32 33 42 57 32 15 0 0 44 33 55 22 40 15 39 186 -24 45 9 55 43 58 21 46 23 22 42 48 29 14 0 0 44 24 54 22 40 22 39 185 -24 45 0 53 43 49 21 46 14 16 42 39 31 13 0 0 44 15 58 22 40 28 39 184 -24 44 51 56 43 40 27 46 5 16 42 30 39 12 0 0 44 7 8 22 40 35 40 182 -24 44 43 5 43 31 38 45 56 22 42 21 53 11 0 0 43 58 25 22 40 42 40 181 -24 44 34 20 43 22 56 45 47 34 42 13 14 10 0 0 43 49 47 22 40 49 40 180 -24 44 25 41 43 14 20 45 38 52 42 4 40 9 0 0 43 41 16 22 40 57 40 179 -24 44 17 9 43 5 51 45 30 17 41 56 13 8 0 0 43 32 52 22 41 4 40 177 -24 44 8 43 42 57 28 45 21 49 41 47 53 7 0 0 43 24 35 22 41 11 40 176 -24 44 0 24 42 49 12 45 13 27 41 39 40 6 0 0 43 16 25 22 41 18 40 175 -24 43 52 13 42 41 3 45 5 12 41 31 33 5 0 0 43 8 22 22 41 25 40 174 -24 43 44 8 42 33 1 44 57 5 41 23 34 4 0 0 43 0 26 22 41 32 41 172 -24 43 36 11 42 25 7 44 49 5 41 15 42 3 0 0 42 52 38 22 41 39 41 171 -24 43 28 22 42 17 20 44 41 13 41 7 58 2 0 0 42 44 57 22 41 47 41 170 -24 43 20 40 42 9 41 44 33 28 41 0 21 1 0 0 42 37 25 22 41 54 41 168 -24 43 13 6 42 2 10 44 25 51 40 52 53 0 0 0 42 30 1 22 42 1 41 167 -24 43 5 40 41 54 47 44 18 23 40 45 32 - 1 0 0 42 22 44 22 42 8 40 166 -23 42 58 23 41 47 32 44 11 3 40 38 19 - 2 0 0 42 15 37 22 42 15 40 165 -23 42 51 14 41 40 25 44 3 51 40 31 15 - 3 0 0 42 8 37 22 42 23 40 163 -23 42 44 13 41 33 27 43 56 48 40 24 20 - 4 0 0 42 1 47 22 42 30 40 162 -23 42 37 22 41 26 38 43 49 53 40 17 33 - 5 0 0 41 55 5 22 42 37 40 161 -23 42 30 39 41 19 57 43 43 8 40 10 54 - 6 0 0 41 48 33 22 42 44 40 160 -22 42 24 5 41 13 26 43 36 31 40 4 25 - 7 0 0 41 42 9 22 42 51 40 158 -22 42 17 40 41 7 4 43 30 4 39 58 5 - 8 0 0 41 35 55 22 42 59 40 157 -22 42 11 25 41 0 51 43 23 46 39 51 54 - 9 0 0 41 29 50 22 43 6 39 156 -22 42 5 19 40 54 47 43 17 38 39 45 52 - 10 0 0 41 23 55 22 43 13 39 155 -21 41 59 23 40 48 53 43 11 39 39 40 0 - 11 0 0 41 18 9 22 43 20 39 153 -21 41 53 36 40 43 8 43 5 50 39 34 18 - 12 0 0 41 12 34 22 43 27 39 152 -21 41 47 59 40 37 34 43 0 11 39 28 45 - 13 0 0 41 7 8 22 43 34 38 151 -20 41 42 33 40 32 9 42 54 43 39 23 22 ...................................... 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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