IOTA/IOTA-ES occultation update for (743) Eugenisis / TYC 1224-00176-1 event on 2009 Nov 01, 16:44 UT Visible from Summary ------- On 2009 Nov 01 UT, the 50 km diameter asteroid (743) Eugenisis will occult a 10.8 mag star in the constellation Aries for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 2.8 mag to 13.5 mag (the magnitude of the asteroid) for at most 4.4 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: 79 * date and approx. time of event: 2009 Nov 01, 16:40 - 2009 Nov 01, 16:49 UT * magnitude of target star: 10.8 * magnitude drop [mag]: 2.8 * estimated maximum duration [s]: 4.4 * Moon: 99 % sunlit, 20° distance * Sun: 173° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 103 * 1 sigma uncertainty interval [path widths]: +/- 0.70 * 1 sigma uncertainty interval [seconds]: +/- 4.5 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .045 +/- .029) * 1 sigma uncertainty ellipse (major, minor, PA): ( .045", .028", 81° ) * approx speed of asteroid's shadow [km/s]: 11.1940 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 1224-00176-1 by 743 Eugenisis on 2009 Nov 1 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 97 6 30 -72 0 0 16 49 10 0 12 -3 95 33 18 98 40 38 ... .. .. 100 54 10 97 50 31 -71 0 0 16 49 9 1 11 -4 96 21 34 99 20 21 ... .. .. 101 27 46 98 36 21 -70 0 0 16 49 9 2 11 -5 97 11 11 100 2 21 ... .. .. 102 4 20 99 23 50 -69 0 0 16 49 8 3 10 -6 98 2 3 100 46 26 96 8 47 102 43 34 100 12 53 -68 0 0 16 49 6 4 9 -7 98 54 7 101 32 26 97 5 3 103 25 13 101 3 24 -67 0 0 16 49 4 6 8 -8 99 47 21 102 20 12 98 2 3 104 9 6 101 55 20 -66 0 0 16 49 2 7 8 -9 100 41 44 103 9 40 98 59 49 104 55 4 102 48 37 -65 0 0 16 48 59 8 7 -10 101 37 13 104 0 44 99 58 23 105 43 0 103 43 14 -64 0 0 16 48 56 9 6 -11 102 33 50 104 53 21 100 57 46 106 32 47 104 39 11 -63 0 0 16 48 53 10 5 -12 103 31 35 105 47 30 101 58 0 107 24 23 105 36 28 -62 0 0 16 48 49 11 4 -13 104 30 28 106 43 9 102 59 9 108 17 45 106 35 4 -61 0 0 16 48 44 12 3 -14 105 30 32 107 40 18 104 1 14 109 12 51 107 35 1 -60 0 0 16 48 40 13 2 -15 106 31 47 108 38 57 105 4 19 110 9 40 108 36 21 -59 0 0 16 48 34 14 1 -16 107 34 17 109 39 7 106 8 28 111 8 12 109 39 7 -58 0 0 16 48 29 15 0 -17 108 38 4 110 40 50 107 13 42 112 8 29 110 43 20 -57 0 0 16 48 22 16 359 -18 109 43 12 111 44 9 108 20 7 113 10 33 111 49 4 -56 0 0 16 48 16 17 358 -19 110 49 44 112 49 6 109 27 47 114 14 25 112 56 24 -55 0 0 16 48 9 18 357 -20 111 57 45 113 55 46 110 36 46 115 20 10 114 5 25 -54 0 0 16 48 1 19 356 -21 113 7 19 115 4 13 111 47 9 116 27 53 115 16 10 -53 0 0 16 47 53 20 355 -22 114 18 33 116 14 33 112 59 2 117 37 37 116 28 48 -52 0 0 16 47 44 21 353 -23 115 31 31 117 26 51 114 12 32 118 49 30 117 43 25 -51 0 0 16 47 35 21 352 -23 116 46 22 118 41 15 115 27 46 120 3 40 119 0 9 -50 0 0 16 47 25 22 351 -24 118 3 14 119 57 54 116 44 50 121 20 14 120 19 10 -49 0 0 16 47 15 23 349 -25 119 22 14 121 16 57 118 3 55 122 39 24 121 40 38 -48 0 0 16 47 4 24 348 -26 120 43 35 122 38 35 119 25 9 124 1 22 123 4 47 -47 0 0 16 46 52 25 347 -26 122 7 28 124 3 2 120 48 45 125 26 21 124 31 50 -46 0 0 16 46 40 26 345 -27 123 34 7 125 30 34 122 14 55 126 54 40 126 2 6 -45 0 0 16 46 27 26 343 -27 125 3 49 127 1 29 123 43 55 128 26 38 127 35 55 -44 0 0 16 46 14 27 342 -28 126 36 52 128 36 9 125 16 2 130 2 41 129 13 41 -43 0 0 16 46 0 27 340 -28 128 13 39 130 15 1 126 51 36 131 43 18 130 55 55 -42 0 0 16 45 45 28 338 -28 129 54 38 131 58 38 128 31 4 133 29 7 132 43 14 -41 0 0 16 45 29 28 336 -29 131 40 24 133 47 41 130 14 53 135 20 56 134 36 25 -40 0 0 16 45 12 29 334 -29 133 31 38 135 43 3 132 3 43 137 19 48 136 36 28 -39 0 0 16 44 54 29 332 -29 135 29 14 137 45 52 133 58 18 139 27 6 Latitude Latitude Latitude Latitude 137 0 0 -38 48 41 16 44 51 29 331 -29 -38 16 6 -39 21 56 -37 31 32 -40 9 44 138 0 0 -38 20 27 16 44 42 29 330 -29 -37 48 13 -38 53 21 -37 4 6 -39 40 35 139 0 0 -37 53 9 16 44 33 29 329 -29 -37 21 14 -38 25 42 -36 37 33 -39 12 24 140 0 0 -37 26 46 16 44 25 29 328 -28 -36 55 10 -37 58 59 -36 11 53 -38 45 12 141 0 0 -37 1 18 16 44 16 29 327 -28 -36 30 0 -37 33 13 -35 47 6 -38 18 57 142 0 0 -36 36 45 16 44 7 29 326 -28 -36 5 44 -37 8 22 -35 23 12 -37 53 40 143 0 0 -36 13 7 16 43 59 29 325 -28 -35 42 21 -36 44 27 -35 0 10 -37 29 20 144 0 0 -35 50 23 16 43 50 28 324 -28 -35 19 52 -36 21 27 -34 38 1 -37 5 56 145 0 0 -35 28 33 16 43 42 28 323 -27 -34 58 16 -35 59 22 -34 16 44 -36 43 29 146 0 0 -35 7 38 16 43 33 28 322 -27 -34 37 34 -35 38 13 -33 56 19 -36 21 58 147 0 0 -34 47 36 16 43 25 28 321 -27 -34 17 45 -35 17 58 -33 36 47 -36 1 23 148 0 0 -34 28 28 16 43 17 28 320 -26 -33 58 49 -34 58 37 -33 18 6 -35 41 44 149 0 0 -34 10 14 16 43 9 27 319 -26 -33 40 46 -34 40 11 -33 0 18 -35 23 1 150 0 0 -33 52 53 16 43 1 27 318 -25 -33 23 36 -34 22 40 -32 43 22 -35 5 13 151 0 0 -33 36 26 16 42 53 27 317 -25 -33 7 19 -34 6 2 -32 27 17 -34 48 20 152 0 0 -33 20 52 16 42 45 26 316 -25 -32 51 54 -33 50 19 -32 12 5 -34 32 23 153 0 0 -33 6 12 16 42 37 26 315 -24 -32 37 22 -33 35 30 -31 57 44 -34 17 20 154 0 0 -32 52 25 16 42 30 25 314 -24 -32 23 42 -33 21 34 -31 44 15 -34 3 12 155 0 0 -32 39 31 16 42 22 25 313 -23 -32 10 56 -33 8 32 -31 31 38 -33 49 59 156 0 0 -32 27 29 16 42 15 25 313 -23 -31 59 1 -32 56 24 -31 19 52 -33 37 41 157 0 0 -32 16 22 16 42 8 24 312 -22 -31 47 59 -32 45 10 -31 8 58 -33 26 17 158 0 0 -32 6 7 16 42 1 24 311 -21 -31 37 50 -32 34 49 -30 58 56 -33 15 48 159 0 0 -31 56 45 16 41 54 23 310 -21 -31 28 33 -32 25 22 -30 49 46 -33 6 13 160 0 0 -31 48 16 16 41 48 23 309 -20 -31 20 8 -32 16 49 -30 41 27 -32 57 33 161 0 0 -31 40 40 16 41 41 22 309 -20 -31 12 36 -32 9 9 -30 34 0 -32 49 47 162 0 0 -31 33 57 16 41 35 21 308 -19 -31 5 57 -32 2 23 -30 27 25 -32 42 55 163 0 0 -31 28 7 16 41 29 21 307 -18 -31 0 10 -31 56 30 -30 21 41 -32 36 58 164 0 0 -31 23 11 16 41 22 20 306 -18 -30 55 16 -31 51 31 -30 16 50 -32 31 56 165 0 0 -31 19 7 16 41 17 20 306 -17 -30 51 14 -31 47 26 -30 12 51 -32 27 48 166 0 0 -31 15 57 16 41 11 19 305 -16 -30 48 5 -31 44 15 -30 9 43 -32 24 35 167 0 0 -31 13 40 16 41 6 18 304 -15 -30 45 49 -31 41 57 -30 7 28 -32 22 17 168 0 0 -31 12 17 16 41 0 18 304 -15 -30 44 26 -31 40 34 -30 6 5 -32 20 53 169 0 0 -31 11 47 16 40 55 17 303 -14 -30 43 55 -31 40 4 -30 5 34 -32 20 24 170 0 0 -31 12 11 16 40 50 16 302 -13 -30 44 18 -31 40 29 -30 5 56 -32 20 51 171 0 0 -31 13 29 16 40 46 15 302 -12 -30 45 35 -31 41 49 -30 7 10 -32 22 13 172 0 0 -31 15 41 16 40 41 15 301 -12 -30 47 45 -31 44 3 -30 9 17 -32 24 30 173 0 0 -31 18 47 16 40 37 14 301 -11 -30 50 48 -31 47 12 -30 12 18 -32 27 42 174 0 0 -31 22 48 16 40 33 13 300 -10 -30 54 45 -31 51 15 -30 16 11 -32 31 51 175 0 0 -31 27 43 16 40 29 12 299 -9 -30 59 37 -31 56 14 -30 20 57 -32 36 55 176 0 0 -31 33 32 16 40 25 12 299 -9 -31 5 22 -32 2 8 -30 26 37 -32 42 56 177 0 0 -31 40 17 16 40 22 11 298 -8 -31 12 2 -32 8 58 -30 33 11 -32 49 53 178 0 0 -31 47 57 16 40 19 10 298 -7 -31 19 37 -32 16 44 -30 40 38 -32 57 47 179 0 0 -31 56 33 16 40 16 9 297 -6 -31 28 6 -32 25 25 -30 49 0 -33 6 38 180 0 0 -32 6 4 16 40 13 8 297 -5 -31 37 31 -32 35 3 -30 58 16 -33 16 26 -179 0 0 -32 16 31 16 40 11 8 296 -4 -31 47 51 -32 45 38 -31 8 26 -33 27 12 -178 0 0 -32 27 55 16 40 9 7 295 -4 -31 59 7 -32 57 10 -31 19 31 -33 38 56 -177 0 0 -32 40 15 16 40 7 6 295 -3 -32 11 19 -33 9 39 -31 31 32 -33 51 39 -176 0 0 -32 53 32 16 40 5 5 294 -2 -32 24 27 -33 23 6 -31 44 28 -34 5 19 -175 0 0 -33 7 47 16 40 4 4 294 -1 -32 38 31 -33 37 30 .. .. .. -34 20 0 -174 0 0 -33 22 59 16 40 3 3 293 0 -32 53 33 -33 52 54 .. .. .. -34 35 39 Uncertainty in time = +/- 5 secs [Prediction of 2008 Mar 20.0] Data for the target star ------------------------ * name: TYC 1224-00176-1 * constellation : Aries * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 02 52 01.1751 DE: +17 18 13.301 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .021, .021 ) * V mag [mag]: 10.8 * B mag [mag]: 11.5 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (743) Eugenisis approx. diameter [km]: 50 approx. diameter ["]: .042 distance from Earth [AU]: 1.64800 * orbital information: orbit source: Preston date of fit: 2008 Mar 20 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 846 number of rejected observations: 87 time covered by the observations: 1913 Feb 25 - 2007 Aug 14 1 sigma uncertainty ellipse (major, minor, PA): 0.040, 0.019, 78° remarks: * orbital elements for (743) Eugenisis : Mean anomaly = 350.21493089 deg Arg. of pericenter = 185.07568777 deg Long. of node = 229.16509596 deg Inclination = 4.82745850 deg Eccentricity = 0.05661731 Semimajor axis = 2.79227586 AU Perihelion dist = 2.63418471 AU Mag: H = 10.23, G = 0.15 Epoch of elements : MJD 55136.69800000 TDT (2009 Nov 01.698) ------ occelmnt file for Occult BEGIN ----------------------------------- 2009 Nov 1 743 Eugenisis 16h 44.6m UT 10.8 2 52 1.175 17 18 13.30TYC 1224-00176-1 11.5 13.5 50 4.4 1.648 -2.136 -14.17 110.7493 17.306 -75.25 -14.63 16.7434 0.36747 -0.79298 -5.73297 -2.65571 -0.00059 -0.00026 2000 348.80007720091026.00000185.075688229.165096 4.8274590.05661731 2.7922759 2.634184710.0 5.00.15 RATE 2.1123530 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.045 0.028 81 1.70 0.029 0 54545.5020091101_0176-1 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2008 Mar 20, 16:01 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org