IOTA/IOTA-ES occultation update for (443) Photographica / TYC 0276-00869-1 event on 2008 May 21, 18:12 UT Visible from SE Asia, India, Arabia Summary ------- On 2008 May 21 UT, the 27 km diameter asteroid (443) Photographica will occult a 10.5 mag star in the constellation Virgo for observers along a path across SE Asia, India, Arabia. In the case of an occultation, the combined light of the asteroid and the star will drop by 3.5 mag to 14.0 mag (the magnitude of the asteroid) for at most 4.8 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: 62 * date and approx. time of event: 2008 May 21, 18:06 - 2008 May 21, 18:30 UT * magnitude of target star: 10.5 * magnitude drop [mag]: 3.5 * estimated maximum duration [s]: 4.8 * Moon: 97 % sunlit, 82° distance * Sun: 116° distance * rough path description: SE Asia, India, Arabia The occultation path -------------------- * approximate projected width [km]: 30 * 1 sigma uncertainty interval [path widths]: +/- 0.99 * 1 sigma uncertainty interval [seconds]: +/- 5.6 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .029 +/- .025) * 1 sigma uncertainty ellipse (major, minor, PA): ( .029", .025", 99° ) * approx speed of asteroid's shadow [km/s]: 5.5315 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 0276-00869-1 by 443 Photographica on 2008 May 21 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 ' " Latitude Latitude Latitude Latitude 14 0 0 36 21 22 18 6 38 55 156 -1 36 12 40 36 30 6 35 55 27 36 47 24 15 0 0 36 3 26 18 6 55 56 158 -1 35 54 42 36 12 10 35 37 28 36 29 29 16 0 0 35 45 14 18 7 12 56 160 -2 35 36 30 35 53 59 35 19 15 36 11 20 17 0 0 35 26 48 18 7 30 57 161 -3 35 18 4 35 35 34 35 0 47 35 52 56 18 0 0 35 8 8 18 7 47 57 163 -4 34 59 23 35 16 54 34 42 5 35 34 18 19 0 0 34 49 14 18 8 5 58 165 -5 34 40 28 34 58 1 34 23 9 35 15 26 20 0 0 34 30 7 18 8 23 58 167 -6 34 21 20 34 38 54 34 4 0 34 56 21 21 0 0 34 10 47 18 8 42 59 169 -7 34 1 59 34 19 35 33 44 37 34 37 2 22 0 0 33 51 14 18 9 0 59 171 -8 33 42 26 34 0 2 33 25 3 34 17 31 23 0 0 33 31 28 18 9 19 60 173 -9 33 22 40 33 40 17 33 5 15 33 57 47 24 0 0 33 11 31 18 9 38 60 175 -10 33 2 42 33 20 20 32 45 16 33 37 51 25 0 0 32 51 22 18 9 57 61 177 -11 32 42 32 33 0 12 32 25 6 33 17 44 26 0 0 32 31 2 18 10 16 61 179 -12 32 22 12 32 39 52 32 4 44 32 57 25 27 0 0 32 10 31 18 10 35 61 181 -13 32 1 41 32 19 22 31 44 12 32 36 56 28 0 0 31 49 50 18 10 55 62 184 -14 31 40 59 31 58 42 31 23 30 32 16 17 29 0 0 31 29 0 18 11 15 62 186 -15 31 20 9 31 37 52 31 2 39 31 55 28 30 0 0 31 8 1 18 11 34 62 189 -15 30 59 9 31 16 53 30 41 38 31 34 30 31 0 0 30 46 53 18 11 54 62 191 -16 30 38 0 30 55 45 30 20 29 31 13 23 32 0 0 30 25 37 18 12 14 63 193 -17 30 16 44 30 34 30 29 59 12 30 52 8 33 0 0 30 4 13 18 12 34 63 196 -18 29 55 20 30 13 6 29 37 48 30 30 45 34 0 0 29 42 43 18 12 55 63 198 -19 29 33 50 29 51 36 29 16 16 30 9 15 35 0 0 29 21 6 18 13 15 63 201 -20 29 12 13 29 30 0 28 54 39 29 47 39 36 0 0 28 59 23 18 13 35 63 203 -21 28 50 30 29 8 18 28 32 56 29 25 57 37 0 0 28 37 36 18 13 56 63 206 -22 28 28 42 28 46 30 28 11 8 29 4 10 38 0 0 28 15 44 18 14 16 63 208 -23 28 6 50 28 24 38 27 49 15 28 42 19 39 0 0 27 53 48 18 14 37 62 211 -24 27 44 54 28 2 43 27 27 19 28 20 23 40 0 0 27 31 49 18 14 58 62 213 -25 27 22 55 27 40 44 27 5 20 27 58 24 41 0 0 27 9 47 18 15 18 62 216 -26 27 0 53 27 18 42 26 43 18 27 36 23 42 0 0 26 47 44 18 15 39 62 218 -27 26 38 50 26 56 39 26 21 15 27 14 20 43 0 0 26 25 39 18 16 0 61 220 -28 26 16 45 26 34 34 25 59 11 26 52 15 44 0 0 26 3 34 18 16 20 61 223 -29 25 54 40 26 12 29 25 37 6 26 30 9 45 0 0 25 41 29 18 16 41 61 225 -30 25 32 36 25 50 24 25 15 1 26 8 4 46 0 0 25 19 25 18 17 2 60 227 -31 25 10 32 25 28 19 24 52 57 25 46 0 47 0 0 24 57 22 18 17 22 60 229 -32 24 48 29 25 6 17 24 30 55 25 23 56 48 0 0 24 35 22 18 17 43 59 231 -33 24 26 29 24 44 16 24 8 55 25 1 55 49 0 0 24 13 25 18 18 3 59 233 -34 24 4 32 24 22 18 23 46 59 24 39 57 50 0 0 23 51 31 18 18 23 58 235 -35 23 42 38 24 0 24 23 25 6 24 18 3 51 0 0 23 29 41 18 18 44 57 237 -35 23 20 49 23 38 34 23 3 17 23 56 12 52 0 0 23 7 56 18 19 4 57 238 -36 22 59 4 23 16 49 22 41 33 23 34 26 53 0 0 22 46 17 18 19 24 56 240 -37 22 37 26 22 55 10 22 19 55 23 12 46 54 0 0 22 24 45 18 19 44 55 242 -38 22 15 53 22 33 37 21 58 24 22 51 12 55 0 0 22 3 19 18 20 3 55 243 -39 21 54 28 22 12 11 21 36 59 22 29 45 56 0 0 21 42 1 18 20 23 54 245 -40 21 33 11 21 50 52 21 15 43 22 8 26 57 0 0 21 20 51 18 20 42 53 246 -41 21 12 1 21 29 42 20 54 34 21 47 15 58 0 0 20 59 50 18 21 1 52 247 -42 20 51 1 21 8 40 20 33 35 21 26 12 59 0 0 20 38 59 18 21 20 52 249 -42 20 30 10 20 47 48 20 12 45 21 5 19 60 0 0 20 18 17 18 21 39 51 250 -43 20 9 29 20 27 7 19 52 5 20 44 36 61 0 0 19 57 47 18 21 58 50 251 -44 19 48 59 20 6 35 19 31 37 20 24 4 62 0 0 19 37 28 18 22 16 49 252 -45 19 28 41 19 46 16 19 11 19 20 3 43 63 0 0 19 17 21 18 22 34 48 253 -46 19 8 34 19 26 8 18 51 14 19 43 34 64 0 0 18 57 26 18 22 52 47 254 -46 18 48 40 19 6 13 18 31 21 19 23 37 65 0 0 18 37 44 18 23 10 46 255 -47 18 28 59 18 46 30 18 11 41 19 3 54 66 0 0 18 18 16 18 23 27 46 256 -48 18 9 32 18 27 2 17 52 15 18 44 24 67 0 0 17 59 2 18 23 44 45 257 -49 17 50 18 18 7 47 17 33 3 18 25 8 68 0 0 17 40 3 18 24 1 44 258 -49 17 31 20 17 48 47 17 14 6 18 6 6 69 0 0 17 21 19 18 24 18 43 259 -50 17 12 36 17 30 2 16 55 24 17 47 20 70 0 0 17 2 50 18 24 34 42 259 -51 16 54 8 17 11 32 16 36 57 17 28 49 71 0 0 16 44 37 18 24 50 41 260 -51 16 35 56 16 53 19 16 18 47 17 10 34 72 0 0 16 26 41 18 25 5 40 261 -52 16 18 1 16 35 22 16 0 53 16 52 36 73 0 0 16 9 2 18 25 20 39 261 -52 16 0 22 16 17 42 15 43 16 16 34 54 74 0 0 15 51 40 18 25 35 38 262 -53 15 43 1 16 0 19 15 25 56 16 17 30 75 0 0 15 34 35 18 25 50 37 263 -53 15 25 57 15 43 14 15 8 54 16 0 23 76 0 0 15 17 49 18 26 4 36 263 -54 15 9 12 15 26 27 14 52 10 15 43 35 77 0 0 15 1 21 18 26 18 35 264 -54 14 52 45 15 9 58 14 35 44 15 27 4 78 0 0 14 45 12 18 26 32 34 264 -55 14 36 36 14 53 48 14 19 37 15 10 53 79 0 0 14 29 22 18 26 45 33 265 -55 14 20 47 14 37 57 14 3 49 14 55 0 80 0 0 14 13 51 18 26 58 32 265 -55 14 5 16 14 22 26 13 48 20 14 39 27 81 0 0 13 58 39 18 27 10 31 266 -56 13 50 6 14 7 14 13 33 11 14 24 14 82 0 0 13 43 48 18 27 22 30 266 -56 13 35 15 13 52 21 13 18 22 14 9 20 83 0 0 13 29 17 18 27 34 29 267 -56 13 20 45 13 37 50 13 3 53 13 54 47 84 0 0 13 15 6 18 27 45 28 267 -56 13 6 35 13 23 38 12 49 45 13 40 34 85 0 0 13 1 16 18 27 56 27 267 -57 12 52 45 13 9 47 12 35 57 13 26 41 86 0 0 12 47 47 18 28 7 26 268 -57 12 39 17 12 56 17 12 22 29 13 13 10 87 0 0 12 34 38 18 28 17 25 268 -57 12 26 9 12 43 8 12 9 23 12 59 59 88 0 0 12 21 51 18 28 26 24 268 -57 12 13 23 12 30 20 11 56 38 12 47 10 89 0 0 12 9 25 18 28 36 23 269 -57 12 0 58 12 17 54 11 44 14 12 34 42 90 0 0 11 57 21 18 28 45 22 269 -57 11 48 54 12 5 49 11 32 12 12 22 36 91 0 0 11 45 38 18 28 53 21 269 -57 11 37 12 11 54 5 11 20 32 12 10 51 92 0 0 11 34 18 18 29 1 20 270 -57 11 25 52 11 42 44 11 9 13 11 59 28 93 0 0 11 23 19 18 29 9 19 270 -56 11 14 54 11 31 44 10 58 16 11 48 27 94 0 0 11 12 42 18 29 17 18 270 -56 11 4 17 11 21 7 10 47 41 11 37 49 95 0 0 11 2 27 18 29 24 17 270 -56 10 54 3 11 10 51 10 37 28 11 27 32 96 0 0 10 52 34 18 29 30 16 271 -56 10 44 11 11 0 58 10 27 37 11 17 38 97 0 0 10 43 4 18 29 36 15 271 -56 10 34 42 10 51 27 10 18 8 11 8 5 98 0 0 10 33 56 18 29 42 14 271 -55 10 25 34 10 42 19 10 9 2 10 58 56 99 0 0 10 25 10 18 29 47 13 271 -55 10 16 49 10 33 32 10 0 18 10 50 8 100 0 0 10 16 47 18 29 52 12 272 -54 10 8 26 10 25 9 9 51 56 10 41 44 101 0 0 10 8 46 18 29 57 11 272 -54 10 0 26 10 17 7 9 43 57 10 33 41 102 0 0 10 1 8 18 30 1 10 272 -54 9 52 48 10 9 29 9 36 20 10 26 1 103 0 0 9 53 52 18 30 5 9 272 -53 9 45 33 10 2 12 9 29 6 10 18 44 104 0 0 9 46 59 18 30 8 8 272 -53 9 38 40 9 55 18 9 22 14 10 11 49 105 0 0 9 40 28 18 30 11 7 272 -52 9 32 10 9 48 47 9 15 45 10 5 17 106 0 0 9 34 20 18 30 13 6 273 -52 9 26 2 9 42 38 9 9 38 9 59 8 107 0 0 9 28 34 18 30 15 5 273 -51 9 20 16 9 36 52 9 3 53 9 53 20 108 0 0 9 23 11 18 30 17 4 273 -51 9 14 53 9 31 28 8 58 31 9 47 56 109 0 0 9 18 10 18 30 19 3 273 -50 9 9 53 9 26 27 8 53 31 9 42 54 110 0 0 9 13 31 18 30 19 2 273 -49 9 5 15 9 21 48 .. .. .. 9 38 14 111 0 0 9 9 15 18 30 20 1 273 -49 9 0 59 9 17 31 .. .. .. 9 33 57 Uncertainty in time = +/- 6 secs [Prediction of 2008 May 8.0] Data for the target star ------------------------ * name: TYC 0276-00869-1 * constellation : Virgo * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 11 54 23.1878 DE: +03 35 33.389 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .020, .020 ) * V mag [mag]: 10.5 * B mag [mag]: 11.3 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (443) Photographica approx. diameter [km]: 27 approx. diameter ["]: .025 distance from Earth [AU]: 1.49400 * orbital information: orbit source: Preston date of fit: 2008 May 07 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 895 number of rejected observations: 101 time covered by the observations: 1903 Jul 11 - 2008 Apr 24 1 sigma uncertainty ellipse (major, minor, PA): 0.021, 0.015, 108° remarks: * orbital elements for (443) Photographica : Mean anomaly = 35.23905695 deg Arg. of pericenter = 348.86557855 deg Long. of node = 175.54618109 deg Inclination = 4.23068208 deg Eccentricity = 0.03970822 Semimajor axis = 2.21522666 AU Perihelion dist = 2.12726397 AU Mag: H = 10.05, G = 0.15 Epoch of elements : MJD 54607.75900000 TDT (2008 May 21.759) ------ occelmnt file for Occult BEGIN ----------------------------------- 2008 May 21 443 Photographica 18h 13.2m UT 10.5 11 54 23.188 3 35 33.39TYC 0276-00869-1 11.3 14.0 27 4.8 1.494 1.168 -5.71 25.5337 3.595 -94.14 20.37 18.2204 0.14056 0.43357 2.96828 -0.96808 0.00425 -0.00197 2000 32.9196202008 514.00000348.865579175.546181 4.2306820.03970822 2.2152267 2.127264010.3 5.00.15 RATE 2.9893500 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.029 0.025 99 1.99 0.025 0 54594.5020080521_0869-1 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2008 May 08, 03:51 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org