IOTA/IOTA-ES occultation update for (3237) Victorplatt / TYC 6304-00155-1 event on 2009 Jul 10, 00:03 UT Visible from SW Asia, N Africa Summary ------- On 2009 Jul 10 UT, the 26 km diameter asteroid (3237) Victorplatt will occult a 10.3 mag star in the constellation Sagittarius for observers along a path across SW Asia, N Africa. In the case of an occultation, the combined light of the asteroid and the star will drop by 4.0 mag to 14.3 mag (the magnitude of the asteroid) for at most 2.2 seconds. This update is based on UNSO/Flagstaff astrometry for the asteroid kindly provided by Alice Monet, historical astrometry from the MPC files (via AstDys), and the following catalogs for the star position: UCAC. The event at a glimpse ---------------------- * Rank: 29 * date and approx. time of event: 2009 Jul 09, 23:57 - 2009 Jul 10, 00:07 UT * magnitude of target star: 10.3 * magnitude drop [mag]: 4.0 * estimated maximum duration [s]: 2.2 * Moon: 94 % sunlit, 28° distance * Sun: 178° distance * rough path description: SW Asia, N Africa The occultation path -------------------- * approximate projected width [km]: 45 * 1 sigma uncertainty interval [path widths]: +/- 2.27 * 1 sigma uncertainty interval [seconds]: +/- 6.0 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .058 +/- .044) * 1 sigma uncertainty ellipse (major, minor, PA): ( .058", .044", 77° ) * approx speed of asteroid's shadow [km/s]: 11.7317 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 6304-00155-1 by 3237 Victorplatt on 2009 Jul 9 Centre Star Star Sun Path Limits Error Limits E. Longitude Latitude U.T. Alt Az Alt Limit 1 Limit 2 Limit 3 Limit 4 o ' " o ' " h m s o o o o ' " o ' " o ' " o ' " Longitude Longitude Longitude Longitude - 54 45 28 54 0 0 24 7 50 3 131 -1 - 54 10 57 - 55 19 53 - 51 32 38 ... .. .. Latitude Latitude Latitude Latitude - 54 0 0 53 39 28 24 7 50 3 131 -1 53 55 3 53 24 0 55 7 27 .. .. .. - 53 0 0 53 12 21 24 7 49 4 132 -2 53 27 52 52 56 57 54 40 0 .. .. .. - 52 0 0 52 45 13 24 7 48 5 133 -3 53 0 41 52 29 53 54 12 32 .. .. .. - 51 0 0 52 18 7 24 7 47 5 134 -4 52 33 31 52 2 50 53 45 4 50 54 54 - 50 0 0 51 51 3 24 7 46 6 135 -4 52 6 23 51 35 49 53 17 38 50 28 9 - 49 0 0 51 24 1 24 7 45 7 135 -5 51 39 18 51 8 52 52 50 14 50 1 27 - 48 0 0 50 57 4 24 7 43 8 136 -6 51 12 16 50 41 58 52 22 53 49 34 49 - 47 0 0 50 30 11 24 7 41 8 137 -7 50 45 20 50 15 9 51 55 38 49 8 17 - 46 0 0 50 3 24 24 7 39 9 138 -7 50 18 29 49 48 27 51 28 27 48 41 52 - 45 0 0 49 36 45 24 7 37 10 139 -8 49 51 45 49 21 51 51 1 24 48 15 33 - 44 0 0 49 10 13 24 7 35 11 139 -9 49 25 10 48 55 23 50 34 28 47 49 23 - 43 0 0 48 43 50 24 7 33 11 140 -10 48 58 43 48 29 5 50 7 41 47 23 21 - 42 0 0 48 17 37 24 7 30 12 141 -10 48 32 25 48 2 56 49 41 4 46 57 30 - 41 0 0 47 51 35 24 7 27 13 142 -11 48 6 19 47 36 57 49 14 37 46 31 49 - 40 0 0 47 25 44 24 7 24 14 143 -12 47 40 24 47 11 11 48 48 22 46 6 21 - 39 0 0 47 0 6 24 7 21 14 143 -13 47 14 42 46 45 37 48 22 19 45 41 4 - 38 0 0 46 34 41 24 7 18 15 144 -13 46 49 13 46 20 16 47 56 30 45 16 1 - 37 0 0 46 9 31 24 7 14 16 145 -14 46 23 58 45 55 10 47 30 54 44 51 12 - 36 0 0 45 44 35 24 7 11 17 146 -15 45 58 58 45 30 18 47 5 34 44 26 39 - 35 0 0 45 19 55 24 7 7 17 147 -16 45 34 14 45 5 42 46 40 30 44 2 20 - 34 0 0 44 55 32 24 7 3 18 147 -16 45 9 46 44 41 23 46 15 43 43 38 18 - 33 0 0 44 31 25 24 6 59 19 148 -17 44 45 36 44 17 21 45 51 12 43 14 34 - 32 0 0 44 7 37 24 6 54 19 149 -18 44 21 44 43 53 36 45 27 0 42 51 7 - 31 0 0 43 44 8 24 6 50 20 150 -18 43 58 10 43 30 11 45 3 7 42 27 58 - 30 0 0 43 20 57 24 6 45 21 151 -19 43 34 56 43 7 4 44 39 34 42 5 9 - 29 0 0 42 58 7 24 6 40 22 152 -20 43 12 1 42 44 18 44 16 21 41 42 39 - 28 0 0 42 35 37 24 6 35 22 152 -20 42 49 28 42 21 52 43 53 28 41 20 29 - 27 0 0 42 13 28 24 6 30 23 153 -21 42 27 15 41 59 47 43 30 57 40 58 41 - 26 0 0 41 51 41 24 6 25 23 154 -22 42 5 24 41 38 4 43 8 48 40 37 13 - 25 0 0 41 30 17 24 6 20 24 155 -22 41 43 56 41 16 43 42 47 2 40 16 8 - 24 0 0 41 9 15 24 6 14 25 156 -23 41 22 50 40 55 44 42 25 38 39 55 25 - 23 0 0 40 48 36 24 6 8 25 157 -24 41 2 8 40 35 9 42 4 39 39 35 5 - 22 0 0 40 28 21 24 6 3 26 158 -24 40 41 49 40 14 57 41 44 3 39 15 9 - 21 0 0 40 8 30 24 5 57 27 159 -25 40 21 55 39 55 10 41 23 53 38 55 36 - 20 0 0 39 49 4 24 5 51 27 159 -25 40 2 25 39 35 47 41 4 7 38 36 28 - 19 0 0 39 30 3 24 5 44 28 160 -26 39 43 21 39 16 49 40 44 47 38 17 44 - 18 0 0 39 11 27 24 5 38 28 161 -26 39 24 42 38 58 17 40 25 52 37 59 25 - 17 0 0 38 53 17 24 5 32 29 162 -27 39 6 29 38 40 10 40 7 24 37 41 32 - 16 0 0 38 35 34 24 5 25 29 163 -27 38 48 42 38 22 30 39 49 23 37 24 5 - 15 0 0 38 18 17 24 5 19 30 164 -28 38 31 22 38 5 15 39 31 48 37 7 3 - 14 0 0 38 1 27 24 5 12 30 165 -28 38 14 29 37 48 28 39 14 41 36 50 28 - 13 0 0 37 45 4 24 5 5 31 166 -29 37 58 3 37 32 8 38 58 2 36 34 20 - 12 0 0 37 29 8 24 4 58 31 167 -29 37 42 5 37 16 15 38 41 51 36 18 39 - 11 0 0 37 13 40 24 4 51 31 168 -30 37 26 35 37 0 50 38 26 8 36 3 25 - 10 0 0 36 58 41 24 4 44 32 169 -30 37 11 33 36 45 53 38 10 53 35 48 39 - 9 0 0 36 44 9 24 4 37 32 170 -31 36 56 59 36 31 24 37 56 7 35 34 21 - 8 0 0 36 30 6 24 4 30 33 171 -31 36 42 53 36 17 24 37 41 51 35 20 31 - 7 0 0 36 16 32 24 4 23 33 172 -31 36 29 17 36 3 52 37 28 3 35 7 9 - 6 0 0 36 3 27 24 4 16 33 173 -32 36 16 10 35 50 49 37 14 45 34 54 16 - 5 0 0 35 50 51 24 4 8 34 175 -32 36 3 32 35 38 15 37 1 57 34 41 51 - 4 0 0 35 38 45 24 4 1 34 176 -32 35 51 23 35 26 11 36 49 39 34 29 55 - 3 0 0 35 27 8 24 3 53 34 177 -32 35 39 44 35 14 36 36 37 51 34 18 29 - 2 0 0 35 16 1 24 3 46 34 178 -33 35 28 35 35 3 30 36 26 33 34 7 32 - 1 0 0 35 5 24 24 3 38 34 179 -33 35 17 56 34 52 55 36 15 45 33 57 4 0 0 0 34 55 16 24 3 31 35 180 -33 35 7 47 34 42 49 36 5 28 33 47 5 1 0 0 34 45 39 24 3 23 35 181 -33 34 58 9 34 33 14 35 55 42 33 37 37 2 0 0 34 36 33 24 3 15 35 182 -33 34 49 0 34 24 9 35 46 26 33 28 38 3 0 0 34 27 57 24 3 8 35 183 -33 34 40 23 34 15 34 35 37 42 33 20 10 4 0 0 34 19 51 24 3 0 35 184 -33 34 32 16 34 7 30 35 29 29 33 12 11 5 0 0 34 12 16 24 2 52 35 186 -34 34 24 40 33 59 56 35 21 46 33 4 43 6 0 0 34 5 12 24 2 45 35 187 -34 34 17 35 33 52 53 35 14 36 32 57 45 7 0 0 33 58 39 24 2 37 35 188 -34 34 11 0 33 46 21 35 7 56 32 51 17 8 0 0 33 52 37 24 2 29 35 189 -34 34 4 57 33 40 20 35 1 49 32 45 20 9 0 0 33 47 6 24 2 22 35 190 -34 33 59 25 33 34 50 34 56 13 32 39 54 10 0 0 33 42 6 24 2 14 35 191 -34 33 54 25 33 29 51 34 51 8 32 34 58 11 0 0 33 37 37 24 2 6 35 192 -33 33 49 55 33 25 23 34 46 35 32 30 34 12 0 0 33 33 40 24 1 59 35 193 -33 33 45 57 33 21 26 34 42 34 32 26 39 13 0 0 33 30 14 24 1 51 35 194 -33 33 42 31 33 18 1 34 39 5 32 23 16 14 0 0 33 27 19 24 1 44 35 195 -33 33 39 36 33 15 7 34 36 8 32 20 24 15 0 0 33 24 56 24 1 36 34 197 -33 33 37 13 33 12 44 34 33 43 32 18 3 16 0 0 33 23 5 24 1 29 34 198 -33 33 35 21 33 10 53 34 31 50 32 16 13 17 0 0 33 21 45 24 1 21 34 199 -32 33 34 1 33 9 33 34 30 30 32 14 54 18 0 0 33 20 57 24 1 14 34 200 -32 33 33 12 33 8 45 34 29 41 32 14 6 19 0 0 33 20 40 24 1 6 33 201 -32 33 32 56 33 8 28 34 29 24 32 13 49 20 0 0 33 20 55 24 0 59 33 202 -32 33 33 11 33 8 43 34 29 40 32 14 4 21 0 0 33 21 42 24 0 52 33 203 -31 33 33 58 33 9 29 34 30 28 32 14 49 22 0 0 33 23 0 24 0 44 32 204 -31 33 35 16 33 10 47 34 31 48 32 16 6 23 0 0 33 24 50 24 0 37 32 205 -31 33 37 7 33 12 37 34 33 40 32 17 54 24 0 0 33 27 12 24 0 30 32 206 -30 33 39 29 33 14 58 34 36 4 32 20 13 25 0 0 33 30 5 24 0 23 31 207 -30 33 42 23 33 17 51 34 39 1 32 23 4 26 0 0 33 33 31 24 0 16 31 208 -30 33 45 49 33 21 16 34 42 30 32 26 26 27 0 0 33 37 27 24 0 10 30 209 -29 33 49 47 33 25 12 34 46 31 32 30 19 28 0 0 33 41 56 24 0 3 30 210 -29 33 54 16 33 29 40 34 51 4 32 34 43 29 0 0 33 46 56 23 59 56 30 210 -28 33 59 17 33 34 39 34 56 10 32 39 38 30 0 0 33 52 28 23 59 50 29 211 -28 34 4 50 33 40 10 35 1 48 32 45 5 31 0 0 33 58 31 23 59 43 29 212 -27 34 10 54 33 46 12 35 7 57 32 51 2 32 0 0 34 5 6 23 59 37 28 213 -27 34 17 30 33 52 46 35 14 39 32 57 31 33 0 0 34 12 13 23 59 31 27 214 -26 34 24 38 33 59 51 35 21 53 33 4 30 34 0 0 34 19 50 23 59 24 27 215 -26 34 32 17 34 7 27 35 29 39 33 12 1 35 0 0 34 27 59 23 59 18 26 216 -25 34 40 28 34 15 35 35 37 56 33 20 2 36 0 0 34 36 40 23 59 13 26 217 -25 34 49 10 34 24 14 35 46 46 33 28 34 37 0 0 34 45 51 23 59 7 25 217 -24 34 58 23 34 33 24 35 56 7 33 37 37 38 0 0 34 55 34 23 59 1 25 218 -23 35 8 7 34 43 5 36 5 59 33 47 10 39 0 0 35 5 48 23 58 56 24 219 -23 35 18 23 34 53 17 36 16 24 33 57 14 40 0 0 35 16 32 23 58 50 23 220 -22 35 29 9 35 3 59 36 27 19 34 7 49 41 0 0 35 27 48 23 58 45 23 221 -21 35 40 27 35 15 12 36 38 46 34 18 53 42 0 0 35 39 33 23 58 40 22 221 -21 35 52 15 35 26 56 36 50 44 34 30 28 43 0 0 35 51 50 23 58 35 21 222 -20 36 4 33 35 39 10 37 3 13 34 42 33 44 0 0 36 4 36 23 58 30 21 223 -19 36 17 22 35 51 55 37 16 13 34 55 7 45 0 0 36 17 53 23 58 25 20 224 -19 36 30 41 36 5 9 37 29 44 35 8 12 46 0 0 36 31 40 23 58 21 19 224 -18 36 44 31 36 18 54 37 43 45 35 21 45 47 0 0 36 45 56 23 58 17 18 225 -17 36 58 50 36 33 8 37 58 16 35 35 48 48 0 0 37 0 43 23 58 12 18 226 -17 37 13 38 36 47 51 38 13 17 35 50 20 49 0 0 37 15 58 23 58 8 17 226 -16 37 28 56 37 3 4 38 28 49 36 5 21 50 0 0 37 31 42 23 58 4 16 227 -15 37 44 44 37 18 45 38 44 49 36 20 51 51 0 0 37 47 56 23 58 1 15 228 -14 38 1 0 37 34 56 39 1 19 36 36 49 52 0 0 38 4 37 23 57 57 15 228 -14 38 17 45 37 51 35 39 18 19 36 53 15 53 0 0 38 21 47 23 57 54 14 229 -13 38 34 58 38 8 42 39 35 46 37 10 9 54 0 0 38 39 25 23 57 51 13 230 -12 38 52 39 38 26 16 39 53 43 37 27 30 55 0 0 38 57 31 23 57 48 12 230 -11 39 10 48 38 44 19 40 12 7 37 45 19 56 0 0 39 16 4 23 57 45 12 231 -11 39 29 24 39 2 48 40 30 59 38 3 34 57 0 0 39 35 4 23 57 42 11 232 -10 39 48 27 39 21 45 40 50 19 38 22 16 58 0 0 39 54 30 23 57 40 10 232 -9 40 7 57 39 41 8 41 10 5 38 41 24 59 0 0 40 14 22 23 57 38 9 233 -8 40 27 53 40 0 56 41 30 18 39 0 58 60 0 0 40 34 40 23 57 36 8 234 -7 40 48 14 40 21 11 41 50 57 39 20 57 61 0 0 40 55 23 23 57 34 8 235 -7 41 9 1 40 41 50 42 12 1 39 41 20 62 0 0 41 16 31 23 57 32 7 235 -6 41 30 13 41 2 54 42 33 31 40 2 8 63 0 0 41 38 3 23 57 31 6 236 -5 41 51 48 41 24 22 42 55 25 40 23 20 64 0 0 41 59 58 23 57 29 5 237 -4 42 13 48 41 46 14 43 17 43 .. .. .. 65 0 0 42 22 17 23 57 28 4 237 -3 42 36 10 42 8 29 43 40 24 .. .. .. 66 0 0 42 44 58 23 57 27 3 238 -2 42 58 55 42 31 6 44 3 29 .. .. .. 67 0 0 43 8 1 23 57 27 3 239 -2 43 22 3 42 54 5 44 26 55 .. .. .. 68 0 0 43 31 25 23 57 26 2 239 -1 43 45 31 43 17 25 44 50 43 .. .. .. Uncertainty in time = +/- 7 secs Prediction of 2009 Jun 25.0 Data for the target star ------------------------ * name: TYC 6304-00155-1 * constellation : Sagittarius * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 19 15 12.5350 DE: -20 34 01.542 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .024, .022 ) * V mag [mag]: 10.3 * B mag [mag]: 11.2 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (3237) Victorplatt approx. diameter [km]: 26 approx. diameter ["]: .020 distance from Earth [AU]: 1.83200 * orbital information: orbit source: Preston date of fit: 2009 Jun 24 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 803 number of rejected observations: 30 time covered by the observations: 1929 Feb 08 - 2009 Jun 19 1 sigma uncertainty ellipse (major, minor, PA): 0.053, 0.038, 74° remarks: * orbital elements for (3237) Victorplatt : Mean anomaly = 22.65852907 deg Arg. of pericenter = 341.49884953 deg Long. of node = 280.67097011 deg Inclination = 9.11786464 deg Eccentricity = 0.06112563 Semimajor axis = 3.01713939 AU Perihelion dist = 2.83271485 AU Mag: H = 10.58, G = 0.15 Epoch of elements : MJD 55022.00200000 TDT (2009 Jul 10.002) ------ occelmnt file for Occult BEGIN ----------------------------------- 2009 Jul 10 3237 Victorplatt 0h 2.6m UT 10.3 19 15 12.535-20 34 1.54TYC 6304-00155-1 11.2 14.3 26 2.2 1.832 -2.247 3.69 0.0855 -20.567 -179.33 22.24 0.0441 0.09461 0.81007 -6.57699 0.76809 0.00002 -0.00017 2000 22.2820202009 7 8.00000341.498850280.670970 9.1178650.06112563 3.0171394 2.832714810.6 5.00.15 RATE 1.8806630 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.058 0.044 77 3.27 0.044 0 55007.0020090710_0155-1 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2009 Jun 24, 17:48 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org