IOTA/IOTA-ES occultation update for (45) Eugenia / TYC 0857-00314-1 event on 2009 Jun 06, 13:17 UT Visible from Summary ------- On 2009 Jun 06 UT, the 215 km diameter asteroid (45) Eugenia will occult a 11.5 mag star in the constellation Virgo for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 1.3 mag to 12.4 mag (the magnitude of the asteroid) for at most 15.6 seconds. This update is based on UNSO/Flagstaff astrometry for the asteroid kindly provided by Alice Monet, TMO astrometry for the asteroid kindly provided by Bill Owen, historical astrometry from the MPC files (via AstDys), and the following catalogs for the star position: UCAC. The event at a glimpse ---------------------- * Rank: 99 * date and approx. time of event: 2009 Jun 06, 13:16 - 2009 Jun 06, 13:25 UT * magnitude of target star: 11.5 * magnitude drop [mag]: 1.3 * estimated maximum duration [s]: 15.6 * Moon: 98 % sunlit, 70° distance * Sun: 96° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 224 * 1 sigma uncertainty interval [path widths]: +/- 0.26 * 1 sigma uncertainty interval [seconds]: +/- 3.2 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .025 +/- .037) * 1 sigma uncertainty ellipse (major, minor, PA): ( .037", .025", 1° ) * approx speed of asteroid's shadow [km/s]: 13.7955 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 0857-00314-1 by 45 Eugenia on 2009 Jun 6 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 69 0 0 - 3 55 21 13 16 58 73 44 0 - 5 2 51 - 2 48 15 - 5 38 8 - 2 13 31 70 0 0 - 4 24 20 13 17 7 73 40 -1 - 5 31 59 - 3 17 6 - 6 7 20 - 2 42 18 71 0 0 - 4 53 38 13 17 16 74 37 -2 - 6 1 25 - 3 46 16 - 6 36 51 - 3 11 23 72 0 0 - 5 23 14 13 17 25 74 33 -4 - 6 31 9 - 4 15 43 - 7 6 39 - 3 40 47 73 0 0 - 5 53 7 13 17 35 74 29 -5 - 7 1 11 - 4 45 29 - 7 36 45 - 4 10 28 74 0 0 - 6 23 17 13 17 44 74 24 -6 - 7 31 28 - 5 15 31 - 8 7 6 - 4 40 26 75 0 0 - 6 53 42 13 17 53 74 20 -7 - 8 2 0 - 5 45 49 - 8 37 43 - 5 10 40 76 0 0 - 7 24 22 13 18 2 74 16 -8 - 8 32 47 - 6 16 21 - 9 8 33 - 5 41 9 77 0 0 - 7 55 15 13 18 12 74 12 -9 - 9 3 48 - 6 47 8 - 9 39 37 - 6 11 53 78 0 0 - 8 26 21 13 18 21 73 8 -10 - 9 35 1 - 7 18 8 -10 10 54 - 6 42 49 79 0 0 - 8 57 40 13 18 30 73 5 -12 -10 6 25 - 7 49 20 -10 42 21 - 7 13 58 80 0 0 - 9 29 9 13 18 39 72 1 -13 -10 38 0 - 8 20 43 -11 13 59 - 7 45 18 81 0 0 -10 0 48 13 18 48 72 358 -14 -11 9 45 - 8 52 17 -11 45 47 - 8 16 49 82 0 0 -10 32 35 13 18 58 71 355 -15 -11 41 38 - 9 23 59 -12 17 43 - 8 48 29 83 0 0 -11 4 31 13 19 7 71 352 -16 -12 13 38 - 9 55 50 -12 49 46 - 9 20 17 84 0 0 -11 36 34 13 19 16 70 349 -17 -12 45 45 -10 27 49 -13 21 55 - 9 52 13 85 0 0 -12 8 42 13 19 25 69 347 -18 -13 17 58 -10 59 53 -13 54 10 -10 24 16 86 0 0 -12 40 55 13 19 34 68 344 -20 -13 50 14 -11 32 3 -14 26 28 -10 56 23 87 0 0 -13 13 12 13 19 43 68 342 -21 -14 22 35 -12 4 16 -14 58 50 -11 28 35 88 0 0 -13 45 32 13 19 52 67 340 -22 -14 54 57 -12 36 33 -15 31 14 -12 0 51 89 0 0 -14 17 53 13 20 0 66 338 -23 -15 27 21 -13 8 52 -16 3 39 -12 33 8 90 0 0 -14 50 15 13 20 9 65 336 -24 -15 59 44 -13 41 12 -16 36 4 -13 5 27 91 0 0 -15 22 36 13 20 18 64 334 -25 -16 32 7 -14 13 32 -17 8 27 -13 37 46 92 0 0 -15 54 56 13 20 26 63 333 -26 -17 4 28 -14 45 50 -17 40 49 -14 10 4 93 0 0 -16 27 13 13 20 34 62 331 -27 -17 36 46 -15 18 7 -18 13 7 -14 42 20 94 0 0 -16 59 27 13 20 43 61 330 -29 -18 9 0 -15 50 20 -18 45 21 -15 14 34 95 0 0 -17 31 36 13 20 51 60 328 -30 -18 41 9 -16 22 30 -19 17 30 -15 46 43 96 0 0 -18 3 40 13 20 59 59 327 -31 -19 13 12 -16 54 34 -19 49 32 -16 18 47 97 0 0 -18 35 37 13 21 7 58 326 -32 -19 45 8 -17 26 32 -20 21 28 -16 50 46 98 0 0 -19 7 26 13 21 15 57 325 -33 -20 16 56 -17 58 22 -20 53 15 -17 22 37 99 0 0 -19 39 7 13 21 23 56 324 -34 -20 48 34 -18 30 5 -21 24 53 -17 54 21 100 0 0 -20 10 38 13 21 30 55 323 -35 -21 20 4 -19 1 39 -21 56 21 -18 25 56 101 0 0 -20 41 59 13 21 38 54 322 -36 -21 51 22 -19 33 2 -22 27 37 -18 57 21 102 0 0 -21 13 9 13 21 45 53 321 -37 -22 22 28 -20 4 15 -22 58 42 -19 28 35 103 0 0 -21 44 6 13 21 53 52 320 -38 -22 53 22 -20 35 16 -23 29 35 -19 59 38 104 0 0 -22 14 51 13 22 0 51 319 -39 -23 24 3 -21 6 5 -24 0 13 -20 30 28 105 0 0 -22 45 22 13 22 7 50 318 -40 -23 54 30 -21 36 40 -24 30 37 -21 1 6 106 0 0 -23 15 38 13 22 14 49 317 -41 -24 24 41 -22 7 1 -25 0 47 -21 31 29 107 0 0 -23 45 39 13 22 20 48 317 -42 -24 54 37 -22 37 6 -25 30 40 -22 1 37 108 0 0 -24 15 24 13 22 27 47 316 -43 -25 24 17 -23 6 57 -26 0 17 -22 31 30 109 0 0 -24 44 52 13 22 33 46 315 -44 -25 53 40 -23 36 30 -26 29 36 -23 1 7 110 0 0 -25 14 3 13 22 40 45 314 -45 -26 22 44 -24 5 47 -26 58 38 -23 30 26 111 0 0 -25 42 56 13 22 46 44 313 -46 -26 51 31 -24 34 46 -27 27 21 -23 59 28 112 0 0 -26 11 30 13 22 52 43 313 -47 -27 19 58 -25 3 26 -27 55 45 -24 28 12 113 0 0 -26 39 45 13 22 58 42 312 -48 -27 48 6 -25 31 48 -28 23 49 -24 56 37 114 0 0 -27 7 40 13 23 4 41 311 -49 -28 15 54 -25 59 50 -28 51 33 -25 24 43 115 0 0 -27 35 14 13 23 9 40 311 -50 -28 43 21 -26 27 32 -29 18 57 -25 52 28 116 0 0 -28 2 28 13 23 15 39 310 -51 -29 10 27 -26 54 53 -29 45 59 -26 19 54 117 0 0 -28 29 21 13 23 20 38 309 -52 -29 37 12 -27 21 54 -30 12 39 -26 46 58 118 0 0 -28 55 52 13 23 25 37 309 -53 -30 3 35 -27 48 32 -30 38 58 -27 13 41 119 0 0 -29 22 0 13 23 30 36 308 -54 -30 29 35 -28 14 49 -31 4 54 -27 40 2 120 0 0 -29 47 47 13 23 35 35 307 -55 -30 55 13 -28 40 44 -31 30 28 -28 6 1 121 0 0 -30 13 10 13 23 40 34 307 -55 -31 20 28 -29 6 16 -31 55 38 -28 31 37 122 0 0 -30 38 11 13 23 44 34 306 -56 -31 45 20 -29 31 25 -32 20 25 -28 56 51 123 0 0 -31 2 48 13 23 48 33 305 -57 -32 9 48 -29 56 11 -32 44 49 -29 21 41 124 0 0 -31 27 1 13 23 53 32 305 -58 -32 33 52 -30 20 33 -33 8 48 -29 46 8 125 0 0 -31 50 50 13 23 57 31 304 -59 -32 57 33 -30 44 31 -33 32 24 -30 10 11 126 0 0 -32 14 16 13 24 1 30 304 -60 -33 20 49 -31 8 6 -33 55 35 -30 33 50 127 0 0 -32 37 17 13 24 5 29 303 -60 -33 43 41 -31 31 16 -34 18 22 -30 57 4 128 0 0 -32 59 53 13 24 8 28 302 -61 -34 6 8 -31 54 1 -34 40 44 -31 19 55 129 0 0 -33 22 5 13 24 12 27 302 -62 -34 28 10 -32 16 22 -35 2 42 -31 42 20 130 0 0 -33 43 52 13 24 15 26 301 -63 -34 49 48 -32 38 19 -35 24 14 -32 4 22 131 0 0 -34 5 14 13 24 19 25 300 -63 -35 11 1 -32 59 50 -35 45 22 -32 25 58 132 0 0 -34 26 12 13 24 22 24 300 -64 -35 31 48 -33 20 57 -36 6 5 -32 47 9 133 0 0 -34 46 44 13 24 25 23 299 -65 -35 52 11 -33 41 38 -36 26 23 -33 7 56 134 0 0 -35 6 51 13 24 28 22 299 -65 -36 12 9 -34 1 55 -36 46 15 -33 28 17 135 0 0 -35 26 33 13 24 31 22 298 -66 -36 31 41 -34 21 46 -37 5 43 -33 48 13 136 0 0 -35 45 50 13 24 33 21 297 -66 -36 50 49 -34 41 12 -37 24 46 -34 7 44 137 0 0 -36 4 41 13 24 36 20 297 -67 -37 9 31 -35 0 13 -37 43 23 -34 26 49 138 0 0 -36 23 8 13 24 38 19 296 -68 -37 27 49 -35 18 49 -38 1 36 -34 45 29 139 0 0 -36 41 9 13 24 41 18 295 -68 -37 45 41 -35 36 59 -38 19 23 -35 3 45 140 0 0 -36 58 46 13 24 43 17 295 -69 -38 3 8 -35 54 44 -38 36 45 -35 21 34 141 0 0 -37 15 57 13 24 45 16 294 -69 -38 20 10 -36 12 4 -38 53 43 -35 38 59 142 0 0 -37 32 43 13 24 47 16 294 -69 -38 36 47 -36 28 59 -39 10 15 -35 55 59 143 0 0 -37 49 4 13 24 49 15 293 -70 -38 53 0 -36 45 29 -39 26 23 -36 12 33 144 0 0 -38 5 0 13 24 50 14 292 -70 -39 8 47 -37 1 34 -39 42 6 -36 28 42 145 0 0 -38 20 32 13 24 52 13 292 -71 -39 24 10 -37 17 14 -39 57 24 -36 44 26 146 0 0 -38 35 38 13 24 54 12 291 -71 -39 39 8 -37 32 29 -40 12 18 -36 59 46 147 0 0 -38 50 20 13 24 55 11 290 -71 -39 53 42 -37 47 19 -40 26 47 -37 14 40 148 0 0 -39 4 38 13 24 56 11 290 -71 -40 7 51 -38 1 44 -40 40 52 -37 29 9 149 0 0 -39 18 31 13 24 58 10 289 -71 -40 21 36 -38 15 45 -40 54 33 -37 43 14 150 0 0 -39 31 59 13 24 59 9 288 -72 -40 34 57 -38 29 21 -41 7 49 -37 56 54 151 0 0 -39 45 3 13 25 0 8 288 -72 -40 47 53 -38 42 33 -41 20 42 -38 10 10 152 0 0 -39 57 43 13 25 1 7 287 -72 -41 0 26 -38 55 20 -41 33 10 -38 23 1 153 0 0 -40 9 59 13 25 1 7 287 -72 -41 12 34 -39 7 43 -41 45 15 -38 35 28 154 0 0 -40 21 51 13 25 2 6 286 -72 -41 24 19 -39 19 42 -41 56 56 -38 47 31 155 0 0 -40 33 19 13 25 3 5 285 -72 -41 35 40 -39 31 17 -42 8 13 -38 59 9 156 0 0 -40 44 23 13 25 3 4 285 -72 -41 46 37 -39 42 28 -42 19 7 -39 10 23 157 0 0 -40 55 4 13 25 4 3 284 -72 -41 57 11 -39 53 15 -42 29 38 -39 21 14 158 0 0 -41 5 21 13 25 4 3 283 -72 -42 7 22 -40 3 38 -42 39 45 -39 31 40 159 0 0 -41 15 14 13 25 4 2 283 -71 -42 17 9 -40 13 38 -42 49 29 -39 41 43 160 0 0 -41 24 44 13 25 4 1 282 -71 -42 26 34 -40 23 14 -42 58 50 -39 51 22 161 0 0 -41 33 51 13 25 4 0 281 -71 -42 35 35 -40 32 27 -43 7 49 -40 0 37 Uncertainty in time = +/- 4 secs [Prediction of 2008 Mar 20.0] Data for the target star ------------------------ * name: TYC 0857-00314-1 * constellation : Virgo * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 11 40 03.0297 DE: +08 16 07.309 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .022, .036 ) * V mag [mag]: 11.5 * B mag [mag]: 12.4 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (45) Eugenia approx. diameter [km]: 215 approx. diameter ["]: .134 distance from Earth [AU]: 2.21800 * orbital information: orbit source: Preston date of fit: 2008 Mar 20 source of used astrometry: FASTT TMO MPC (via Astdys) number of used observations: 1415 number of rejected observations: 182 time covered by the observations: 1910 Feb 14 - 2008 Feb 17 1 sigma uncertainty ellipse (major, minor, PA): 0.013, 0.008, 106° remarks: * orbital elements for (45) Eugenia : Mean anomaly = 327.71569092 deg Arg. of pericenter = 85.64374157 deg Long. of node = 147.92050424 deg Inclination = 6.61016424 deg Eccentricity = 0.08150829 Semimajor axis = 2.72049861 AU Perihelion dist = 2.49875541 AU Mag: H = 7.40, G = 0.07 Epoch of elements : MJD 54988.55400000 TDT (2009 Jun 06.554) ------ occelmnt file for Occult BEGIN ----------------------------------- 2009 Jun 6 45 Eugenia 13h 17.7m UT 11.5 11 40 3.030 8 16 7.31TYC 0857-00314-1 12.4 12.4 215 15.6 2.218 1.870 -13.51 80.5076 8.272 -19.74 22.70 13.2945 -0.12157 -0.24703 7.00082 -3.40872 0.00495 -0.00221 2000 325.8368042009 529.00000 85.643742147.920504 6.6101640.08150829 2.7204986 2.4987554 7.5 5.00.07 RATE 2.1965010 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.037 0.025 1 1.26 0.035 2 13 1190 6 0 54545.5020090606_0314-1 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2008 Mar 20, 09:04 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org