Update for (611) Valeria - August 31/September 1, 2003

Update computed by Jan Manek; issued 22 Aug 2003 23:04 +0200 (CEST)

Jan Manek's update

                 IOTA/IOTA-ES occultation update for
       (611) Valeria / TYC 5196-01051-1 on August 31/September 1, 2003
            visible from N Norway, W Venezuela and Columbia

Summary

In the night of August 31/September 1, 2003 a faint 11.4 mag star TYC 5196-01051-1 will be occulted by a 57 km asteroid (611) Valeria. This update is based on USNO/Flagstaff astrometry for the asteroid and UCAC2 star position.

The updated path shows ~2 path width north shift with time ~1.1 minutes later compared to Edwin Goffin's nominal prediction.

Updated path runs due to north shift over N Norway ~23:57.8 UT and later over west Venezuela around 0:07.9 UT with Caracas on south limit and Columbia around 0:8.8 UT with Medellin on north limit. 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 31, 2003 @ 23:58 UT (Europe) September 1, 2003 @ 0:08 UT (S.America) * magnitude of target star: 11.4 * magnitude drop [mag]: 2.6 * estimated maximum duration [s]: 4.7 * path description: given above * Goffin's original chart reference: A03_0958 The occultation path: * approximate ground width [km]: 75 * uncertainty [path widths]: 1.40 * uncertainty in time [s]: 7 * 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 5196-01051-1 * constellation: Aquarius * J2000 position [h,m,s; o,',"]: 21h 00m 12.6035s; -02o 19' 32.179" * position source: UCAC2 * estimated accuracy ["]: 0.03" (0.02", 0.02") * V mag [mag]: 11.41 * B-V [mag]: +0.46 * remarks: Target star is in north-west Aquarius, rather far from bright stars. !!! 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: (611) Valeria approx. diameter [km]: 59 * orbital information orbit source: calculation Manek source of used astrometry: USNO/Flagstaff (Ron Stone) number of used observations: 103 USNO number of rejected observations: 11 time covered by the observations: 1998 06 27 - 2003 08 06 rms residuals ["] (RA,DE): 0.08", 0.09" estimated positional accuracy at epoch of event ["]: 0.05", 0.05" remarks: Data for the event: * UT date and time of least geocentric approach: 00:04.5 UT * approx. V mag of minor planet at event [mag]: 11.4 * geocentric parallax of minor planet ["]: 4.025 * magnitude drop [mag]: 2.6 * estimated maximum duration [s]: 4.7 * apparent motion of minor planet ["/h]: 28.24 * angular distance to moon, phase of moon [deg,%]: 101, 23% * remarks: Elements for WinOccult: ============ cut here =========================================== 2003 Sep 01 611 Valeria 0h 4.5m UT 96-01051-1 11.4 21 0 12.604- 2 19 32.18TYC 5196-01051-1 13.9 59 4.7 2.185 -1.459 -17.86 -25.832 -2.320 -181.06 8.50 0.0755 -.36195 .44288 -5.43489 -4.43784 0.00240 -0.00063 2000 251.3759442003 829.00000253.327551189.88346513.449503 0.119060942.981036282.626111289.195 0.15 RATE 1.9149310 .0000000 .0000000 .0000000 .00000000 .00000000 .00000000 ============ cut here =========================================== Calculator(s): Jan Manek

Updated path location for (611) Valeria on August 31/September 1, 2003

Updated path location for (611) Valeria on August 31/September 1, 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 Latitude Latitude Latitude Latitude ...................................... shortened ............................................. o ' " o ' " h m s o o o o ' " o ' " o ' " o ' " 40 0 0 72 47 40 -0 2 25 5 245 -5 73 8 40 72 26 47 74 8 23 71 28 21 39 0 0 72 40 23 -0 2 24 6 244 -5 73 1 30 72 19 23 74 1 32 71 20 39 38 0 0 72 32 48 -0 2 24 6 243 -6 72 54 1 72 11 41 73 54 23 71 12 38 37 0 0 72 24 52 -0 2 24 6 242 -6 72 46 13 72 3 38 73 46 56 71 4 16 36 0 0 72 16 37 -0 2 23 7 241 -6 72 38 5 71 55 16 73 39 10 70 55 34 35 0 0 72 8 2 -0 2 23 7 240 -6 72 29 37 71 46 33 73 31 4 70 46 30 34 0 0 71 59 5 -0 2 22 7 239 -7 72 20 48 71 37 28 73 22 39 70 37 4 33 0 0 71 49 47 -0 2 22 8 238 -7 72 11 39 71 28 3 73 13 53 70 27 16 32 0 0 71 40 8 -0 2 21 8 237 -7 72 2 7 71 18 14 73 4 45 70 17 5 31 0 0 71 30 5 -0 2 21 8 236 -8 71 52 13 71 8 3 72 55 17 70 6 31 30 0 0 71 19 39 -0 2 20 9 235 -8 71 41 57 70 57 29 72 45 26 69 55 32 29 0 0 71 8 50 -0 2 20 9 234 -8 71 31 16 70 46 30 72 35 12 69 44 9 28 0 0 70 57 36 -0 2 19 9 233 -9 71 20 12 70 35 7 72 24 35 69 32 21 27 0 0 70 45 57 -0 2 18 10 232 -9 71 8 42 70 23 19 72 13 33 69 20 6 26 0 0 70 33 52 -0 2 17 10 231 -9 70 56 47 70 11 4 72 2 7 69 7 25 25 0 0 70 21 20 -0 2 17 11 230 -10 70 44 26 69 58 23 71 50 15 68 54 16 24 0 0 70 8 22 -0 2 16 11 229 -10 70 31 37 69 45 14 71 37 57 68 40 40 23 0 0 69 54 55 -0 2 15 11 228 -10 70 18 21 69 31 36 71 25 11 68 26 34 22 0 0 69 40 59 -0 2 14 12 227 -11 70 4 36 69 17 30 71 11 58 68 11 59 21 0 0 69 26 34 -0 2 13 12 226 -11 69 50 22 69 2 54 70 58 16 67 56 53 20 0 0 69 11 38 -0 2 12 13 226 -11 69 35 37 68 47 47 70 44 3 67 41 16 19 0 0 68 56 10 -0 2 11 13 225 -12 69 20 21 68 32 8 70 29 21 67 25 7 18 0 0 68 40 10 -0 2 10 13 224 -12 69 4 33 68 15 57 70 14 7 67 8 25 17 0 0 68 23 38 -0 2 9 14 223 -12 68 48 12 67 59 13 69 58 20 66 51 9 16 0 0 68 6 30 -0 2 8 14 222 -13 68 31 16 67 41 54 69 42 0 66 33 18 15 0 0 67 48 48 -0 2 6 15 221 -13 68 13 46 67 24 0 69 25 5 66 14 52 14 0 0 67 30 30 -0 2 5 15 220 -13 67 55 40 67 5 29 69 7 35 65 55 48 13 0 0 67 11 34 -0 2 3 16 219 -14 67 36 57 66 46 21 68 49 29 65 36 8 12 0 0 66 52 1 -0 2 2 16 218 -14 67 17 36 66 26 36 68 30 44 65 15 49 11 0 0 66 31 48 -0 2 0 17 217 -15 66 57 36 66 6 10 68 11 21 64 54 50 10 0 0 66 10 55 -0 1 59 17 216 -15 66 36 56 65 45 5 67 51 19 64 33 11 9 0 0 65 49 21 -0 1 57 18 215 -16 66 15 34 65 23 18 67 30 35 64 10 50 8 0 0 65 27 4 -0 1 55 18 214 -16 65 53 31 65 0 49 67 9 9 63 47 47 7 0 0 65 4 4 -0 1 53 19 213 -16 65 30 44 64 37 37 66 47 0 63 24 1 6 0 0 64 40 20 -0 1 51 20 212 -17 65 7 12 64 13 40 66 24 7 62 59 31 5 0 0 64 15 51 -0 1 49 20 211 -17 64 42 56 63 48 58 66 0 28 62 34 15 4 0 0 63 50 35 -0 1 46 21 210 -18 64 17 53 63 23 30 65 36 2 62 8 13 3 0 0 63 24 32 -0 1 44 21 209 -18 63 52 2 62 57 15 65 10 49 61 41 25 2 0 0 62 57 40 -0 1 41 22 208 -19 63 25 23 62 30 11 64 44 47 61 13 48 1 0 0 62 30 0 -0 1 39 23 208 -19 62 57 54 62 2 18 64 17 55 60 45 23 0 0 0 62 1 29 -0 1 36 23 207 -20 62 29 36 61 33 35 63 50 12 60 16 8 - 1 0 0 61 32 7 -0 1 33 24 206 -20 62 0 26 61 4 2 63 21 38 59 46 4 - 2 0 0 61 1 53 -0 1 30 24 205 -21 61 30 24 60 33 37 62 52 10 59 15 8 - 3 0 0 60 30 47 -0 1 27 25 204 -21 60 59 29 60 2 20 62 21 49 58 43 22 - 4 0 0 59 58 48 -0 1 23 26 203 -22 60 27 41 59 30 10 61 50 34 58 10 43 - 5 0 0 59 25 55 -0 1 20 26 202 -22 59 54 58 58 57 7 61 18 23 57 37 12 - 6 0 0 58 52 8 -0 1 16 27 201 -23 59 21 22 58 23 10 60 45 17 57 2 49 - 7 0 0 58 17 27 -0 1 12 28 200 -23 58 46 50 57 48 19 60 11 14 56 27 33 - 8 0 0 57 41 50 -0 1 8 29 199 -24 58 11 23 57 12 34 59 36 15 55 51 24 - 9 0 0 57 5 19 -0 1 4 29 198 -24 57 35 1 56 35 55 59 0 19 55 14 22 - 10 0 0 56 27 54 -0 0 59 30 197 -25 56 57 43 55 58 21 58 23 25 54 36 28 - 11 0 0 55 49 33 -0 0 54 31 196 -25 56 19 30 55 19 53 57 45 34 53 57 40 - 12 0 0 55 10 18 -0 0 50 32 195 -26 55 40 22 54 40 32 57 6 47 53 18 1 - 13 0 0 54 30 9 -0 0 45 32 194 -26 55 0 19 54 0 17 56 27 2 52 37 30 - 14 0 0 53 49 7 -0 0 39 33 193 -27 54 19 22 53 19 9 55 46 22 51 56 9 - 15 0 0 53 7 11 -0 0 34 34 192 -27 53 37 32 52 37 9 55 4 45 51 13 57 - 16 0 0 52 24 24 -0 0 28 35 190 -28 52 54 48 51 54 18 54 22 14 50 30 56 - 17 0 0 51 40 47 -0 0 22 36 189 -28 52 11 14 51 10 37 53 38 49 49 47 6 - 18 0 0 50 56 19 -0 0 16 37 188 -29 51 26 49 50 26 8 52 54 32 49 2 31 - 19 0 0 50 11 4 -0 0 9 37 187 -29 50 41 35 49 40 50 52 9 23 48 17 9 - 20 0 0 49 25 1 -0 0 3 38 186 -30 49 55 34 48 54 47 51 23 24 47 31 4 ...................................... shortened ............................................. - 58 0 0 17 14 48 0 6 6 53 119 -29 17 39 40 16 50 6 18 50 41 15 41 15 - 59 0 0 16 29 42 0 6 16 53 117 -28 16 54 23 16 5 11 18 4 50 14 56 50 - 60 0 0 15 45 18 0 6 26 52 115 -27 16 9 47 15 20 57 17 19 42 14 13 6 - 61 0 0 15 1 36 0 6 36 52 114 -27 15 25 54 14 37 26 16 35 17 13 30 4 - 62 0 0 14 18 37 0 6 46 51 112 -26 14 42 45 13 54 38 15 51 37 12 47 45 - 63 0 0 13 36 23 0 6 56 50 111 -25 14 0 20 13 12 35 15 8 41 12 6 10 - 64 0 0 12 54 54 0 7 6 50 109 -25 13 18 41 12 31 16 14 26 31 11 25 18 - 65 0 0 12 14 10 0 7 15 49 108 -24 12 37 47 11 50 42 13 45 7 10 45 12 - 66 0 0 11 34 13 0 7 25 48 107 -23 11 57 39 11 10 54 13 4 30 10 5 52 - 67 0 0 10 55 2 0 7 34 48 106 -22 11 18 19 10 31 54 12 24 41 9 27 17 - 68 0 0 10 16 39 0 7 43 47 105 -22 10 39 46 9 53 40 11 45 40 8 49 29 - 69 0 0 9 39 3 0 7 52 46 104 -21 10 2 1 9 16 13 11 7 27 8 12 28 - 70 0 0 9 2 16 0 8 1 45 103 -20 9 25 4 8 39 35 10 30 4 7 36 15 - 71 0 0 8 26 17 0 8 10 45 102 -19 8 48 56 8 3 45 9 53 29 7 0 49 - 72 0 0 7 51 7 0 8 18 44 101 -18 8 13 37 7 28 43 9 17 45 6 26 11 - 73 0 0 7 16 45 0 8 27 43 100 -18 7 39 7 6 54 30 8 42 50 5 52 21 - 74 0 0 6 43 13 0 8 35 42 99 -17 7 5 27 6 21 6 8 8 45 5 19 20 - 75 0 0 6 10 30 0 8 43 41 99 -16 6 32 36 5 48 32 7 35 30 4 47 7 - 76 0 0 5 38 37 0 8 51 40 98 -15 6 0 35 5 16 46 7 3 6 4 15 43 - 77 0 0 5 7 33 0 8 58 39 97 -14 5 29 23 4 45 50 6 31 32 3 45 8 - 78 0 0 4 37 20 0 9 6 39 97 -13 4 59 2 4 15 44 6 0 49 3 15 22 - 79 0 0 4 7 55 0 9 13 38 96 -12 4 29 30 3 46 27 5 30 56 2 46 25 - 80 0 0 3 39 21 0 9 20 37 96 -12 4 0 49 3 17 59 5 1 54 2 18 16 - 81 0 0 3 11 36 0 9 27 36 95 -11 3 32 57 2 50 21 4 33 42 1 50 57 - 82 0 0 2 44 42 0 9 34 35 95 -10 3 5 56 2 23 33 4 6 22 1 24 27 - 83 0 0 2 18 36 0 9 40 34 94 -9 2 39 44 1 57 35 3 39 52 0 58 46 - 84 0 0 1 53 21 0 9 47 33 94 -8 2 14 23 1 32 25 3 14 12 0 33 53 - 85 0 0 1 28 55 0 9 53 32 94 -7 1 49 51 1 8 6 2 49 23 0 9 50 - 86 0 0 1 5 19 0 9 59 31 93 -6 1 26 9 0 44 35 2 25 24 - 0 13 25 - 87 0 0 0 42 33 0 10 5 30 93 -5 1 3 17 0 21 54 2 2 16 - 0 35 51 ...................................... 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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