IOTA/IOTA-ES occultation update for (714) Ulula / TYC 0546-00184-1 event on 2009 Nov 02, 17:35 UT Visible from Summary ------- On 2009 Nov 02 UT, the 39 km diameter asteroid (714) Ulula will occult a 11.6 mag star in the constellation Aquarius for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 2.5 mag to 13.9 mag (the magnitude of the asteroid) for at most 3.3 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: 50 * date and approx. time of event: 2009 Nov 02, 17:29 - 2009 Nov 02, 17:42 UT * magnitude of target star: 11.6 * magnitude drop [mag]: 2.5 * estimated maximum duration [s]: 3.3 * Moon: 100 % sunlit, 73° distance * Sun: 105° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 52 * 1 sigma uncertainty interval [path widths]: +/- 1.27 * 1 sigma uncertainty interval [seconds]: +/- 4.2 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .032 +/- .032) * 1 sigma uncertainty ellipse (major, minor, PA): ( .032", .032", 358° ) * approx speed of asteroid's shadow [km/s]: 11.9315 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 0546-00184-1 by 714 Ulula on 2009 Nov 2 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 - 24 0 0 60 15 55 17 29 59 23 133 0 60 0 57 60 30 57 59 23 12 61 9 24 - 23 0 0 60 4 53 17 30 2 24 134 0 59 49 53 60 19 57 59 12 2 60 58 31 - 22 0 0 59 53 33 17 30 4 24 135 -1 59 38 30 60 8 40 59 0 34 60 47 20 - 21 0 0 59 41 55 17 30 7 25 136 -1 59 26 50 59 57 4 58 48 48 60 35 50 - 20 0 0 59 29 58 17 30 10 25 137 -2 59 14 51 59 45 10 58 36 43 60 24 2 - 19 0 0 59 17 43 17 30 13 26 138 -2 59 2 34 59 32 57 58 24 20 60 11 56 - 18 0 0 59 5 9 17 30 16 26 139 -2 58 49 57 59 20 26 58 11 37 59 59 31 - 17 0 0 58 52 17 17 30 19 27 140 -3 58 37 2 59 7 35 57 58 36 59 46 47 - 16 0 0 58 39 5 17 30 23 27 141 -3 58 23 48 58 54 26 57 45 16 59 33 44 - 15 0 0 58 25 35 17 30 26 28 142 -3 58 10 15 58 40 58 57 31 37 59 20 22 - 14 0 0 58 11 45 17 30 30 28 143 -4 57 56 23 58 27 11 57 17 39 59 6 41 - 13 0 0 57 57 36 17 30 33 29 144 -4 57 42 11 58 13 4 57 3 21 58 52 41 - 12 0 0 57 43 7 17 30 37 29 145 -5 57 27 40 57 58 38 56 48 44 58 38 21 - 11 0 0 57 28 19 17 30 40 30 146 -5 57 12 50 57 43 52 56 33 47 58 23 42 - 10 0 0 57 13 11 17 30 44 31 147 -6 56 57 40 57 28 47 56 18 31 58 8 44 - 9 0 0 56 57 44 17 30 48 31 148 -6 56 42 10 57 13 22 56 2 55 57 53 25 - 8 0 0 56 41 57 17 30 52 32 149 -6 56 26 21 56 57 38 55 47 0 57 37 47 - 7 0 0 56 25 50 17 30 56 32 150 -7 56 10 11 56 41 34 55 30 45 57 21 49 - 6 0 0 56 9 24 17 31 1 33 151 -7 55 53 42 56 25 9 55 14 10 57 5 31 - 5 0 0 55 52 37 17 31 5 33 152 -8 55 36 54 56 8 25 54 57 15 56 48 53 - 4 0 0 55 35 31 17 31 9 34 153 -8 55 19 45 55 51 22 54 40 1 56 31 56 - 3 0 0 55 18 5 17 31 14 34 154 -9 55 2 17 55 33 58 54 22 27 56 14 38 - 2 0 0 55 0 19 17 31 18 35 155 -9 54 44 29 55 16 14 54 4 33 55 57 0 - 1 0 0 54 42 14 17 31 23 35 156 -10 54 26 21 54 58 11 53 46 20 55 39 3 0 0 0 54 23 48 17 31 28 36 158 -10 54 7 53 54 39 48 53 27 47 55 20 45 1 0 0 54 5 3 17 31 33 36 159 -11 53 49 6 54 21 5 53 8 54 55 2 8 2 0 0 53 45 58 17 31 38 37 160 -11 53 29 59 54 2 2 52 49 42 54 43 11 3 0 0 53 26 34 17 31 43 37 161 -12 53 10 33 53 42 40 52 30 11 54 23 54 4 0 0 53 6 50 17 31 49 38 162 -12 52 50 47 53 22 58 52 10 20 54 4 18 5 0 0 52 46 48 17 31 54 38 164 -13 52 30 42 53 2 57 51 50 11 53 44 22 6 0 0 52 26 26 17 32 0 39 165 -14 52 10 19 52 42 38 51 29 43 53 24 7 7 0 0 52 5 45 17 32 5 39 166 -14 51 49 36 52 21 59 51 8 56 53 3 33 8 0 0 51 44 46 17 32 11 40 167 -15 51 28 35 52 1 1 50 47 50 52 42 40 9 0 0 51 23 28 17 32 17 40 168 -15 51 7 16 51 39 45 50 26 27 52 21 28 10 0 0 51 1 52 17 32 23 41 170 -16 50 45 39 51 18 11 50 4 46 51 59 58 11 0 0 50 39 59 17 32 29 41 171 -17 50 23 44 50 56 19 49 42 47 51 38 10 12 0 0 50 17 48 17 32 35 42 172 -17 50 1 31 50 34 9 49 20 31 51 16 4 13 0 0 49 55 20 17 32 42 42 174 -18 49 39 2 50 11 42 48 57 58 50 53 40 14 0 0 49 32 35 17 32 48 42 175 -19 49 16 15 49 48 58 48 35 9 50 31 0 15 0 0 49 9 33 17 32 55 43 176 -19 48 53 13 49 25 58 48 12 4 50 8 2 16 0 0 48 46 16 17 33 1 43 178 -20 48 29 55 49 2 42 47 48 43 49 44 49 17 0 0 48 22 43 17 33 8 44 179 -21 48 6 21 48 39 10 47 25 7 49 21 19 18 0 0 47 58 55 17 33 15 44 181 -21 47 42 32 48 15 23 47 1 16 48 57 34 19 0 0 47 34 53 17 33 22 45 182 -22 47 18 29 47 51 21 46 37 11 48 33 35 20 0 0 47 10 36 17 33 29 45 184 -23 46 54 12 47 27 6 46 12 53 48 9 21 21 0 0 46 46 7 17 33 36 45 185 -23 46 29 42 47 2 36 45 48 21 47 44 53 22 0 0 46 21 24 17 33 44 46 187 -24 46 4 59 46 37 54 45 23 37 47 20 12 23 0 0 45 56 29 17 33 51 46 188 -25 45 40 4 46 13 0 44 58 42 46 55 18 24 0 0 45 31 23 17 33 59 46 190 -26 45 14 57 45 47 54 44 33 35 46 30 12 25 0 0 45 6 6 17 34 6 46 191 -26 44 49 40 45 22 37 44 8 17 46 4 56 26 0 0 44 40 39 17 34 14 47 193 -27 44 24 13 44 57 9 43 42 50 45 39 28 27 0 0 44 15 2 17 34 22 47 194 -28 43 58 36 44 31 32 43 17 14 45 13 51 28 0 0 43 49 16 17 34 30 47 196 -29 43 32 51 44 5 47 42 51 29 44 48 4 29 0 0 43 23 23 17 34 38 47 198 -30 43 6 58 43 39 53 42 25 37 44 22 9 30 0 0 42 57 22 17 34 46 48 199 -30 42 40 57 43 13 51 41 59 38 43 56 7 31 0 0 42 31 15 17 34 54 48 201 -31 42 14 51 42 47 44 41 33 32 43 29 58 32 0 0 42 5 2 17 35 2 48 203 -32 41 48 39 42 21 30 41 7 22 43 3 42 33 0 0 41 38 45 17 35 10 48 204 -33 41 22 22 41 55 12 40 41 7 42 37 22 34 0 0 41 12 23 17 35 18 48 206 -34 40 56 2 41 28 50 40 14 49 42 10 57 35 0 0 40 45 59 17 35 27 48 208 -34 40 29 38 41 2 24 39 48 28 41 44 29 36 0 0 40 19 32 17 35 35 48 209 -35 40 3 12 40 35 56 39 22 5 41 17 58 37 0 0 39 53 4 17 35 44 48 211 -36 39 36 46 40 9 27 38 55 41 40 51 26 38 0 0 39 26 36 17 35 52 48 213 -37 39 10 19 39 42 57 38 29 17 40 24 53 39 0 0 39 0 8 17 36 1 48 214 -38 38 43 52 39 16 28 38 2 54 39 58 20 40 0 0 38 33 41 17 36 9 48 216 -39 38 17 27 38 50 0 37 36 33 39 31 48 41 0 0 38 7 17 17 36 18 48 218 -40 37 51 4 38 23 34 37 10 14 39 5 18 42 0 0 37 40 56 17 36 26 48 219 -41 37 24 45 37 57 11 36 43 58 38 38 51 43 0 0 37 14 39 17 36 35 47 221 -42 36 58 29 37 30 53 36 17 47 38 12 28 44 0 0 36 48 27 17 36 44 47 223 -42 36 32 19 37 4 39 35 51 41 37 46 9 45 0 0 36 22 20 17 36 52 47 224 -43 36 6 15 36 38 31 35 25 42 37 19 56 46 0 0 35 56 21 17 37 1 47 226 -44 35 40 17 36 12 29 34 59 49 36 53 50 47 0 0 35 30 29 17 37 9 46 227 -45 35 14 27 35 46 36 34 34 4 36 27 51 48 0 0 35 4 46 17 37 18 46 229 -46 34 48 46 35 20 50 34 8 28 36 2 0 49 0 0 34 39 12 17 37 27 46 230 -47 34 23 15 34 55 14 33 43 2 35 36 18 50 0 0 34 13 49 17 37 35 45 232 -48 33 57 53 34 29 48 33 17 46 35 10 47 51 0 0 33 48 36 17 37 44 45 233 -49 33 32 43 34 4 34 32 52 41 34 45 26 52 0 0 33 23 36 17 37 52 44 235 -50 33 7 45 33 39 31 32 27 48 34 20 18 53 0 0 32 58 48 17 38 0 44 236 -51 32 42 59 33 14 41 32 3 8 33 55 22 54 0 0 32 34 14 17 38 9 43 237 -52 32 18 27 32 50 4 31 38 42 33 30 39 55 0 0 32 9 54 17 38 17 43 239 -53 31 54 10 32 25 42 31 14 31 33 6 10 56 0 0 31 45 49 17 38 25 42 240 -54 31 30 7 32 1 35 30 50 34 32 41 57 57 0 0 31 22 0 17 38 33 42 241 -55 31 6 21 31 37 44 30 26 54 32 17 59 58 0 0 30 58 28 17 38 41 41 242 -56 30 42 51 31 14 9 30 3 30 31 54 18 59 0 0 30 35 13 17 38 49 40 243 -57 30 19 39 30 50 51 29 40 24 31 30 54 60 0 0 30 12 16 17 38 57 40 245 -58 29 56 44 30 27 52 29 17 35 31 7 48 61 0 0 29 49 38 17 39 5 39 246 -59 29 34 8 30 5 11 28 55 5 30 45 1 62 0 0 29 27 19 17 39 12 39 247 -60 29 11 52 29 42 49 28 32 55 30 22 33 63 0 0 29 5 20 17 39 20 38 248 -60 28 49 55 29 20 48 28 11 5 30 0 25 64 0 0 28 43 41 17 39 27 37 249 -61 28 28 19 28 59 7 27 49 35 29 38 37 65 0 0 28 22 24 17 39 35 36 250 -62 28 7 4 28 37 47 27 28 26 29 17 11 66 0 0 28 1 28 17 39 42 36 251 -63 27 46 11 28 16 49 27 7 39 28 56 6 67 0 0 27 40 55 17 39 49 35 252 -64 27 25 40 27 56 13 26 47 14 28 35 24 68 0 0 27 20 44 17 39 56 34 253 -65 27 5 32 27 36 0 26 27 12 28 15 4 69 0 0 27 0 57 17 40 2 33 253 -66 26 45 47 27 16 10 26 7 33 27 55 8 70 0 0 26 41 33 17 40 9 33 254 -67 26 26 26 26 56 44 25 48 18 27 35 36 71 0 0 26 22 33 17 40 16 32 255 -68 26 7 28 26 37 42 25 29 26 27 16 28 72 0 0 26 3 59 17 40 22 31 256 -69 25 48 56 26 19 5 25 11 0 26 57 44 73 0 0 25 45 49 17 40 28 30 257 -70 25 30 48 26 0 53 24 52 58 26 39 26 74 0 0 25 28 4 17 40 34 29 257 -71 25 13 6 25 43 6 24 35 22 26 21 33 75 0 0 25 10 46 17 40 40 28 258 -72 24 55 50 25 25 45 24 18 11 26 4 7 76 0 0 24 53 53 17 40 46 28 259 -73 24 39 0 25 8 51 24 1 26 25 47 6 77 0 0 24 37 27 17 40 51 27 259 -74 24 22 36 24 52 22 23 45 8 25 30 32 78 0 0 24 21 28 17 40 57 26 260 -75 24 6 39 24 36 21 23 29 16 25 14 25 79 0 0 24 5 56 17 41 2 25 261 -76 23 51 9 24 20 47 23 13 51 24 58 46 80 0 0 23 50 51 17 41 7 24 261 -77 23 36 6 24 5 40 22 58 53 24 43 34 81 0 0 23 36 14 17 41 12 23 262 -77 23 21 31 23 51 1 22 44 23 24 28 49 82 0 0 23 22 5 17 41 16 22 262 -78 23 7 24 23 36 50 22 30 21 24 14 33 83 0 0 23 8 24 17 41 21 21 263 -79 22 53 44 23 23 7 22 16 46 24 0 45 84 0 0 22 55 11 17 41 25 21 263 -80 22 40 33 23 9 52 22 3 40 23 47 25 85 0 0 22 42 27 17 41 29 20 264 -81 22 27 51 22 57 6 21 51 2 23 34 34 86 0 0 22 30 11 17 41 33 19 264 -81 22 15 37 22 44 48 21 38 52 23 22 12 87 0 0 22 18 24 17 41 37 18 265 -82 22 3 52 22 33 0 21 27 11 23 10 19 88 0 0 22 7 6 17 41 41 17 265 -82 21 52 35 22 21 40 21 15 59 22 58 56 89 0 0 21 56 17 17 41 44 16 266 -83 21 41 48 22 10 50 21 5 15 22 48 1 90 0 0 21 45 58 17 41 47 15 266 -83 21 31 30 22 0 29 20 55 1 22 37 36 91 0 0 21 36 7 17 41 50 14 267 -83 21 21 41 21 50 37 20 45 16 22 27 41 92 0 0 21 26 47 17 41 53 13 267 -83 21 12 22 21 41 15 20 36 0 22 18 15 93 0 0 21 17 56 17 41 56 12 267 -83 21 3 32 21 32 22 20 27 13 22 9 19 94 0 0 21 9 34 17 41 58 11 268 -83 20 55 12 21 23 59 20 18 56 22 0 53 95 0 0 21 1 42 17 42 0 10 268 -82 20 47 21 21 16 6 20 11 8 21 52 56 96 0 0 20 54 20 17 42 2 9 269 -82 20 40 0 21 8 43 20 3 50 21 45 30 97 0 0 20 47 27 17 42 4 8 269 -81 20 33 9 21 1 49 19 57 2 21 38 34 98 0 0 20 41 5 17 42 6 8 269 -81 20 26 47 20 55 26 19 50 42 21 32 7 99 0 0 20 35 12 17 42 7 7 270 -80 20 20 55 20 49 32 19 44 53 21 26 11 100 0 0 20 29 49 17 42 9 6 270 -79 20 15 33 20 44 8 19 39 33 21 20 45 101 0 0 20 24 56 17 42 10 5 270 -78 20 10 41 20 39 14 .. .. .. 21 15 49 102 0 0 20 20 33 17 42 11 4 271 -78 20 6 18 20 34 50 .. .. .. 21 11 23 103 0 0 20 16 39 17 42 11 3 271 -77 20 2 26 20 30 56 .. .. .. 21 7 27 104 0 0 20 13 16 17 42 12 2 271 -76 19 59 3 20 27 32 .. .. .. 21 4 1 105 0 0 20 10 22 17 42 12 1 272 -75 19 56 10 20 24 38 .. .. .. 21 1 6 106 0 0 20 7 58 17 42 12 0 272 -74 .. .. .. 20 22 13 .. .. .. 20 58 40 Uncertainty in time = +/- 4 secs [Prediction of 2008 Mar 20.0] Data for the target star ------------------------ * name: TYC 0546-00184-1 * constellation : Aquarius * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 21 31 17.1593 DE: +01 59 14.493 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .027, .030 ) * V mag [mag]: 11.6 * B mag [mag]: 12.4 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (714) Ulula approx. diameter [km]: 39 approx. diameter ["]: .025 distance from Earth [AU]: 2.15600 * orbital information: orbit source: Preston date of fit: 2008 Mar 20 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 785 number of rejected observations: 90 time covered by the observations: 1911 May 18 - 2008 Feb 09 1 sigma uncertainty ellipse (major, minor, PA): 0.017, 0.011, 70° remarks: * orbital elements for (714) Ulula : Mean anomaly = 248.06897588 deg Arg. of pericenter = 231.15567523 deg Long. of node = 233.95442109 deg Inclination = 14.26070866 deg Eccentricity = 0.05595556 Semimajor axis = 2.53626398 AU Perihelion dist = 2.39434592 AU Mag: H = 8.95, G = 0.15 Epoch of elements : MJD 55137.73300000 TDT (2009 Nov 02.733) ------ occelmnt file for Occult BEGIN ----------------------------------- 2009 Nov 2 714 Ulula 17h 35.6m UT 11.6 21 31 17.159 1 59 14.49TYC 0546-00184-1 12.4 13.9 39 3.3 2.156 1.702 -10.18 16.8073 1.991 -87.99 -14.95 17.5926 0.24618 0.61900 6.25405 -2.49801 0.00536 0.00142 2000 246.18202620091026.00000231.155675233.954421 14.2607090.05595556 2.5362640 2.3943459 9.1 5.00.15 RATE 2.4401270 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.032 0.032 358 2.27 0.032 0 54545.5020091102_0184-1 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2008 Mar 20, 16:03 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org