IOTA/IOTA-ES occultation update for (2043) Ortutay / TYC 1914-00080-1 event on 2009 Jan 05, 14:34 UT Visible from Summary ------- On 2009 Jan 05 UT, the 45 km diameter asteroid (2043) Ortutay will occult a 9.4 mag star in the constellation Gemini for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 5.6 mag to 15.0 mag (the magnitude of the asteroid) for at most 3.4 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: 33 * date and approx. time of event: 2009 Jan 05, 14:28 - 2009 Jan 05, 14:41 UT * magnitude of target star: 9.4 * magnitude drop [mag]: 5.6 * estimated maximum duration [s]: 3.4 * Moon: 61 % sunlit, 81° distance * Sun: 175° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 59 * 1 sigma uncertainty interval [path widths]: +/- 2.05 * 1 sigma uncertainty interval [seconds]: +/- 7.7 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .074 +/- .062) * 1 sigma uncertainty ellipse (major, minor, PA): ( .074", .061", 100° ) * approx speed of asteroid's shadow [km/s]: 13.2346 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 1914-00080-1 by 2043 Ortutay on 2009 Jan 5 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 72 0 0 -31 28 22 14 41 2 0 61 -5 -31 10 0 .. .. .. .. .. .. .. .. .. 73 0 0 -30 59 52 14 41 2 1 60 -6 -30 41 33 -31 18 17 .. .. .. -32 34 47 74 0 0 -30 31 37 14 41 2 2 60 -7 -30 13 22 -30 49 58 .. .. .. -32 6 13 75 0 0 -30 3 37 14 41 2 3 59 -8 -29 45 26 -30 21 55 .. .. .. -31 37 55 76 0 0 -29 35 54 14 41 1 4 59 -9 -29 17 46 -29 54 8 .. .. .. -31 9 53 77 0 0 -29 8 29 14 41 0 5 58 -10 -28 50 24 -29 26 39 .. .. .. -30 42 8 78 0 0 -28 41 21 14 40 59 6 58 -11 -28 23 20 -28 59 27 .. .. .. -30 14 41 79 0 0 -28 14 32 14 40 58 7 57 -12 -27 56 34 -28 32 34 -26 43 50 -29 47 33 80 0 0 -27 48 2 14 40 56 8 57 -13 -27 30 8 -28 6 1 -26 17 39 -29 20 44 81 0 0 -27 21 53 14 40 55 9 57 -13 -27 4 2 -27 39 48 -25 51 47 -28 54 15 82 0 0 -26 56 4 14 40 53 10 56 -14 -26 38 17 -27 13 56 -25 26 16 -28 28 7 83 0 0 -26 30 37 14 40 51 11 56 -15 -26 12 54 -26 48 25 -25 1 7 -28 2 21 84 0 0 -26 5 32 14 40 49 12 55 -16 -25 47 52 -26 23 16 -24 36 20 -27 36 56 85 0 0 -25 40 49 14 40 47 13 55 -17 -25 23 13 -25 58 30 -24 11 55 -27 11 55 86 0 0 -25 16 30 14 40 44 14 54 -18 -24 58 57 -25 34 7 -23 47 53 -26 47 17 87 0 0 -24 52 34 14 40 42 15 54 -19 -24 35 5 -25 10 8 -23 24 15 -26 23 2 88 0 0 -24 29 3 14 40 39 16 53 -20 -24 11 38 -24 46 33 -23 1 1 -25 59 13 89 0 0 -24 5 57 14 40 36 17 53 -21 -23 48 35 -24 23 23 -22 38 12 -25 35 48 90 0 0 -23 43 15 14 40 33 17 52 -22 -23 25 57 -24 0 39 -22 15 47 -25 12 48 91 0 0 -23 21 0 14 40 30 18 52 -23 -23 3 45 -23 38 19 -21 53 49 -24 50 15 92 0 0 -22 59 10 14 40 26 19 51 -24 -22 41 58 -23 16 27 -21 32 15 -24 28 7 93 0 0 -22 37 47 14 40 23 20 51 -25 -22 20 39 -22 55 0 -21 11 9 -24 6 27 94 0 0 -22 16 51 14 40 19 21 50 -26 -21 59 46 -22 34 1 -20 50 28 -23 45 14 95 0 0 -21 56 22 14 40 15 22 50 -27 -21 39 20 -22 13 28 -20 30 15 -23 24 28 96 0 0 -21 36 20 14 40 11 23 49 -28 -21 19 21 -21 53 24 -20 10 29 -23 4 10 97 0 0 -21 16 47 14 40 6 24 49 -29 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24 44 -14 47 12 -17 31 38 151 0 0 -16 16 52 14 33 58 49 355 -50 -16 0 46 -16 33 2 -14 55 23 -17 40 2 152 0 0 -16 25 40 14 33 50 49 354 -50 -16 9 33 -16 41 52 -15 4 4 -17 48 57 153 0 0 -16 34 59 14 33 43 49 353 -50 -16 18 50 -16 51 12 -15 13 16 -17 58 24 154 0 0 -16 44 49 14 33 35 48 351 -49 -16 28 38 -17 1 4 -15 22 58 -18 8 22 155 0 0 -16 55 9 14 33 27 48 350 -49 -16 38 57 -17 11 26 -15 33 10 -18 18 51 156 0 0 -17 6 1 14 33 19 48 349 -48 -16 49 46 -17 22 18 -15 43 53 -18 29 51 157 0 0 -17 17 22 14 33 12 47 348 -48 -17 1 6 -17 33 42 -15 55 6 -18 41 22 158 0 0 -17 29 14 14 33 4 47 346 -47 -17 12 56 -17 45 36 -16 6 48 -18 53 24 159 0 0 -17 41 36 14 32 57 47 345 -47 -17 25 17 -17 58 0 -16 19 1 -19 5 56 160 0 0 -17 54 29 14 32 49 46 344 -46 -17 38 7 -18 10 54 -16 31 43 -19 19 0 161 0 0 -18 7 51 14 32 42 46 343 -46 -17 51 27 -18 24 19 -16 44 55 -19 32 33 162 0 0 -18 21 43 14 32 34 45 342 -45 -18 5 17 -18 38 13 -16 58 37 -19 46 37 163 0 0 -18 36 5 14 32 27 45 341 -45 -18 19 37 -18 52 38 -17 12 47 -20 1 11 164 0 0 -18 50 57 14 32 20 44 340 -44 -18 34 26 -19 7 32 -17 27 27 -20 16 15 165 0 0 -19 6 18 14 32 12 43 339 -43 -18 49 45 -19 22 55 -17 42 36 -20 31 48 166 0 0 -19 22 8 14 32 5 43 338 -43 -19 5 33 -19 38 47 -17 58 14 -20 47 51 167 0 0 -19 38 27 14 31 58 42 337 -42 -19 21 49 -19 55 9 -18 14 21 -21 4 24 168 0 0 -19 55 15 14 31 51 42 336 -41 -19 38 34 -20 12 0 -18 30 56 -21 21 26 169 0 0 -20 12 31 14 31 44 41 335 -41 -19 55 48 -20 29 19 -18 47 59 -21 38 56 170 0 0 -20 30 16 14 31 37 40 334 -40 -20 13 30 -20 47 6 -19 5 30 -21 56 56 171 0 0 -20 48 29 14 31 31 40 333 -39 -20 31 40 -21 5 22 -19 23 29 -22 15 23 172 0 0 -21 7 10 14 31 24 39 332 -38 -20 50 18 -21 24 6 -19 41 56 -22 34 19 173 0 0 -21 26 18 14 31 17 38 331 -38 -21 9 23 -21 43 17 -20 0 49 -22 53 43 174 0 0 -21 45 53 14 31 11 38 330 -37 -21 28 56 -22 2 55 -20 20 10 -23 13 34 175 0 0 -22 5 56 14 31 4 37 329 -36 -21 48 55 -22 23 1 -20 39 57 -23 33 53 176 0 0 -22 26 25 14 30 58 36 329 -35 -22 9 21 -22 43 33 -21 0 11 -23 54 38 177 0 0 -22 47 20 14 30 52 35 328 -34 -22 30 13 -23 4 31 -21 20 51 -24 15 50 178 0 0 -23 8 41 14 30 46 34 327 -34 -22 51 31 -23 25 56 -21 41 56 -24 37 28 179 0 0 -23 30 28 14 30 40 34 326 -33 -23 13 14 -23 47 45 -22 3 26 -24 59 32 180 0 0 -23 52 39 14 30 34 33 325 -32 -23 35 23 -24 10 0 -22 25 22 -25 22 1 -179 0 0 -24 15 16 14 30 28 32 325 -31 -23 57 56 -24 32 40 -22 47 42 -25 44 55 -178 0 0 -24 38 16 14 30 23 31 324 -30 -24 20 53 -24 55 44 -23 10 26 -26 8 14 -177 0 0 -25 1 41 14 30 17 30 323 -29 -24 44 14 -25 19 12 -23 33 33 -26 31 56 -176 0 0 -25 25 28 14 30 12 30 323 -28 -25 7 59 -25 43 3 -23 57 4 -26 56 2 -175 0 0 -25 49 39 14 30 7 29 322 -27 -25 32 6 -26 7 17 -24 20 57 -27 20 31 -174 0 0 -26 14 12 14 30 2 28 321 -27 -25 56 35 -26 31 54 -24 45 13 -27 45 23 -173 0 0 -26 39 6 14 29 57 27 321 -26 -26 21 26 -26 56 52 -25 9 50 -28 10 36 -172 0 0 -27 4 22 14 29 52 26 320 -25 -26 46 38 -27 22 11 -25 34 48 -28 36 10 -171 0 0 -27 29 58 14 29 48 25 319 -24 -27 12 11 -27 47 51 -26 0 7 -29 2 5 -170 0 0 -27 55 54 14 29 43 24 319 -23 -27 38 3 -28 13 50 -26 25 46 -29 28 20 -169 0 0 -28 22 10 14 29 39 23 318 -22 -28 4 15 -28 40 9 -26 51 44 -29 54 54 -168 0 0 -28 48 44 14 29 35 22 318 -21 -28 30 46 -29 6 47 -27 18 0 -30 21 47 -167 0 0 -29 15 35 14 29 31 22 317 -20 -28 57 34 -29 33 42 -27 44 35 -30 48 58 -166 0 0 -29 42 45 14 29 27 21 316 -19 -29 24 40 -30 0 55 -28 11 27 -31 16 26 -165 0 0 -30 10 10 14 29 23 20 316 -18 -29 52 2 -30 28 24 -28 38 35 -31 44 10 -164 0 0 -30 37 52 14 29 20 19 315 -17 -30 19 40 -30 56 9 -29 5 59 -32 12 10 -163 0 0 -31 5 48 14 29 16 18 315 -16 -30 47 33 -31 24 9 -29 33 39 -32 40 25 -162 0 0 -31 33 59 14 29 13 17 314 -15 -31 15 40 -31 52 23 -30 1 32 -33 8 53 -161 0 0 -32 2 22 14 29 10 16 313 -14 -31 44 0 -32 20 50 -30 29 39 -33 37 35 -160 0 0 -32 30 59 14 29 7 15 313 -13 -32 12 33 -32 49 30 -30 57 59 -34 6 29 -159 0 0 -32 59 47 14 29 5 14 312 -12 -32 41 18 -33 18 21 -31 26 31 -34 35 35 -158 0 0 -33 28 45 14 29 2 13 312 -12 -33 10 14 -33 47 23 -31 55 14 -35 4 51 -157 0 0 -33 57 54 14 29 0 12 311 -11 -33 39 19 -34 16 35 -32 24 7 -35 34 16 -156 0 0 -34 27 12 14 28 58 11 310 -10 -34 8 33 -34 45 56 -32 53 9 -36 3 50 -155 0 0 -34 56 37 14 28 56 10 310 -9 -34 37 56 -35 15 24 -33 22 20 -36 33 32 -154 0 0 -35 26 10 14 28 54 9 309 -8 -35 7 26 -35 45 0 -33 51 38 -37 3 20 -153 0 0 -35 55 48 14 28 52 9 309 -7 -35 37 1 -36 14 41 -34 21 3 -37 33 13 -152 0 0 -36 25 32 14 28 51 8 308 -6 -36 6 43 -36 44 28 -34 50 33 -38 3 12 -151 0 0 -36 55 20 14 28 50 7 307 -5 -36 36 28 -37 14 18 -35 20 8 -38 33 14 -150 0 0 -37 25 11 14 28 49 6 307 -4 -37 6 16 -37 44 12 .. .. .. -39 3 18 -149 0 0 -37 55 4 14 28 48 5 306 -3 -37 36 7 -38 14 8 .. .. .. -39 33 25 -148 0 0 -38 24 59 14 28 47 4 306 -2 -38 6 0 -38 44 5 .. .. .. -40 3 31 -147 0 0 -38 54 54 14 28 46 3 305 -1 -38 35 52 -39 14 1 .. .. .. -40 33 38 -146 0 0 -39 24 47 14 28 46 2 304 0 -39 5 44 -39 43 57 .. .. .. -41 3 42 Uncertainty in time = +/- 8 secs [Prediction of 2008 Nov 4.0] Data for the target star ------------------------ * name: TYC 1914-00080-1 * constellation : Gemini * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 07 25 14.6189 DE: +24 30 49.677 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .021, .023 ) * V mag [mag]: 9.4 * B mag [mag]: 10.5 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (2043) Ortutay approx. diameter [km]: 45 approx. diameter ["]: .030 distance from Earth [AU]: 2.08200 * orbital information: orbit source: Preston date of fit: 2008 Nov 03 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 777 number of rejected observations: 47 time covered by the observations: 1908 Aug 22 - 2008 Feb 10 1 sigma uncertainty ellipse (major, minor, PA): 0.071, 0.057, 101° remarks: * orbital elements for (2043) Ortutay : Mean anomaly = 75.69640624 deg Arg. of pericenter = 58.89697126 deg Long. of node = 321.38796700 deg Inclination = 3.07754806 deg Eccentricity = 0.10541690 Semimajor axis = 3.11049562 AU Perihelion dist = 2.78259682 AU Mag: H = 10.72, G = 0.15 Epoch of elements : MJD 54836.60800000 TDT (2009 Jan 05.608) ------ occelmnt file for Occult BEGIN ----------------------------------- 2009 Jan 5 2043 Ortutay 14h 34.9m UT 9.4 7 25 14.619 24 30 49.68TYC 1914-00080-1 10.5 15.0 45 3.4 2.082 -2.302 2.88 147.2664 24.512 -37.33 -22.55 14.5816 -0.05854 -0.64039 -7.43888 0.68114 -0.00043 -0.00020 2000 74.50919020081230.00000 58.896971321.387967 3.0775480.10541690 3.1104956 2.782596810.8 5.00.15 RATE 1.7966340 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.074 0.061 100 3.05 0.061 0 54774.5020090105_0080-1 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2008 Nov 04, 05:19 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org