IOTA/IOTA-ES occultation update for (0) 2005 TO74 / UCAC2 33686014 event on 2012 Nov 29, 02:09 UT Visible from Brazil, Bolivia, Peru Summary ------- On 2012 Nov 29 UT, the 68 km diameter asteroid (0) 2005 TO74 will occult a 11.6 mag star in the constellation Pisces for observers along a path across Brazil, Bolivia, Peru. In the case of an occultation, the combined light of the asteroid and the star will drop by 11.6 mag to 23.2 mag (the magnitude of the asteroid) for at most 4.4 seconds. This update is based on historical astrometry from the MPC files (via AstDys), and the following catalogs for the star position: UCAC. The event at a glimpse ---------------------- * Rank: 0 * date and approx. time of event: 2012 Nov 29, 02:03 - 2012 Nov 29, 02:13 UT * geocentric midpoint of event [JD]: 2456260.59001667 * magnitude of target star: 11.6 * magnitude drop [mag]: 11.6 * estimated maximum duration [s]: 4.4 * Moon: 100 % sunlit, 52° distance * Sun: 134° distance * rough path description: Brazil, Bolivia, Peru The occultation path -------------------- * approximate projected width [km]: 76 * 1 sigma uncertainty interval [path widths]: +/- 872.11 * 1 sigma uncertainty interval [seconds]: +/- 22943.9 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 15.982 +/- 5.455) * 1 sigma uncertainty ellipse (major, minor, PA): ( 16.712", 2.541", 73° ) * approx speed of asteroid's shadow [km/s]: 15.4595 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of UCAC2 33686014 by 0 2005 TO74 on 2012 Nov 29 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 -111 0 0 -33 16 18 2 13 45 42 42 0 -32 54 15 -33 38 26 .. .. .. .. .. .. -110 0 0 -32 56 32 2 13 40 43 41 -1 -32 34 28 -33 18 41 .. .. .. .. .. .. -109 0 0 -32 36 36 2 13 36 43 40 -2 -32 14 31 -32 58 46 .. .. .. .. .. .. -108 0 0 -32 16 31 2 13 31 44 39 -3 -31 54 25 -32 38 41 .. .. .. .. .. .. -107 0 0 -31 56 16 2 13 26 45 39 -4 -31 34 10 -32 18 27 .. .. .. .. .. .. -106 0 0 -31 35 54 2 13 20 46 38 -5 -31 13 47 -31 58 5 .. .. .. .. .. .. -105 0 0 -31 15 23 2 13 15 46 37 -6 -30 53 15 -31 37 35 .. .. .. .. .. .. -104 0 0 -30 54 44 2 13 10 47 36 -7 -30 32 36 -31 16 56 .. .. .. .. .. .. -103 0 0 -30 33 58 2 13 4 48 35 -7 -30 11 49 -30 56 11 .. .. .. .. .. .. -102 0 0 -30 13 5 2 12 59 49 33 -8 -29 50 56 -30 35 18 .. .. .. .. .. .. -101 0 0 -29 52 5 2 12 53 50 32 -9 -29 29 56 -30 14 19 .. .. .. .. .. .. -100 0 0 -29 30 59 2 12 48 50 31 -10 -29 8 50 -29 53 13 .. .. .. .. .. .. - 99 0 0 -29 9 48 2 12 42 51 30 -11 -28 47 39 -29 32 2 .. .. .. .. .. .. - 98 0 0 -28 48 32 2 12 36 52 29 -12 -28 26 22 -29 10 46 .. .. .. .. .. .. - 97 0 0 -28 27 11 2 12 30 52 28 -13 -28 5 1 -28 49 24 .. .. .. .. .. .. - 96 0 0 -28 5 45 2 12 24 53 26 -14 -27 43 36 -28 27 59 .. .. .. .. .. .. - 95 0 0 -27 44 16 2 12 18 54 25 -15 -27 22 7 -28 6 29 .. .. .. .. .. .. - 94 0 0 -27 22 43 2 12 12 55 24 -16 -27 0 34 -27 44 56 .. .. .. .. .. .. - 93 0 0 -27 1 8 2 12 6 55 22 -17 -26 38 59 -27 23 21 .. .. .. .. .. .. - 92 0 0 -26 39 30 2 12 0 56 21 -17 -26 17 21 -27 1 42 .. .. .. .. .. .. - 91 0 0 -26 17 50 2 11 54 57 20 -18 -25 55 42 -26 40 2 .. .. .. .. .. .. - 90 0 0 -25 56 8 2 11 47 57 18 -19 -25 34 1 -26 18 20 .. .. .. .. .. .. - 89 0 0 -25 34 26 2 11 41 58 16 -20 -25 12 19 -25 56 38 .. .. .. .. .. .. - 88 0 0 -25 12 44 2 11 34 58 15 -21 -24 50 37 -25 34 54 .. .. .. .. .. .. - 87 0 0 -24 51 1 2 11 28 59 13 -22 -24 28 55 -25 13 11 .. .. .. .. .. .. - 86 0 0 -24 29 19 2 11 21 59 11 -23 -24 7 14 -24 51 28 .. .. .. .. .. .. - 85 0 0 -24 7 38 2 11 15 60 10 -24 -23 45 34 -24 29 47 .. .. .. .. .. .. - 84 0 0 -23 45 58 2 11 8 60 8 -25 -23 23 55 -24 8 6 .. .. .. .. .. .. - 83 0 0 -23 24 21 2 11 1 61 6 -26 -23 2 18 -23 46 28 .. .. .. .. .. .. - 82 0 0 -23 2 46 2 10 55 61 4 -27 -22 40 44 -23 24 52 .. .. .. .. .. .. - 81 0 0 -22 41 14 2 10 48 62 2 -28 -22 19 13 -23 3 19 .. .. .. .. .. .. - 80 0 0 -22 19 45 2 10 41 62 360 -28 -21 57 46 -22 41 50 .. .. .. .. .. .. - 79 0 0 -21 58 21 2 10 34 62 358 -29 -21 36 22 -22 20 24 .. .. .. .. .. .. - 78 0 0 -21 37 1 2 10 27 63 356 -30 -21 15 4 -21 59 3 .. .. .. .. .. .. - 77 0 0 -21 15 46 2 10 20 63 354 -31 -20 53 50 -21 37 47 .. .. .. .. .. .. - 76 0 0 -20 54 37 2 10 13 63 351 -32 -20 32 42 -21 16 36 .. .. .. .. .. .. - 75 0 0 -20 33 33 2 10 6 63 349 -33 -20 11 39 -20 55 31 .. .. .. .. .. .. - 74 0 0 -20 12 36 2 9 59 64 347 -34 -19 50 43 -20 34 33 .. .. .. .. .. .. - 73 0 0 -19 51 46 2 9 52 64 344 -35 -19 29 54 -20 13 41 .. .. .. .. .. .. - 72 0 0 -19 31 3 2 9 45 64 342 -36 -19 9 13 -19 52 57 .. .. .. .. .. .. - 71 0 0 -19 10 28 2 9 38 64 340 -36 -18 48 39 -19 32 21 .. .. .. .. .. .. - 70 0 0 -18 50 1 2 9 31 64 338 -37 -18 28 14 -19 11 52 .. .. .. .. .. .. - 69 0 0 -18 29 43 2 9 24 64 335 -38 -18 7 57 -18 51 33 .. .. .. .. .. .. - 68 0 0 -18 9 34 2 9 17 64 333 -39 -17 47 50 -18 31 23 .. .. .. .. .. .. - 67 0 0 -17 49 35 2 9 10 63 331 -40 -17 27 52 -18 11 22 .. .. .. .. .. .. - 66 0 0 -17 29 46 2 9 3 63 329 -41 -17 8 5 -17 51 31 .. .. .. .. .. .. - 65 0 0 -17 10 7 2 8 56 63 326 -42 -16 48 28 -17 31 51 .. .. .. .. .. .. - 64 0 0 -16 50 40 2 8 49 63 324 -42 -16 29 2 -17 12 22 .. .. .. .. .. .. - 63 0 0 -16 31 23 2 8 42 63 322 -43 -16 9 47 -16 53 4 .. .. .. .. .. .. - 62 0 0 -16 12 19 2 8 35 62 320 -44 -15 50 44 -16 33 58 .. .. .. .. .. .. - 61 0 0 -15 53 26 2 8 28 62 318 -45 -15 31 53 -16 15 4 .. .. .. .. .. .. - 60 0 0 -15 34 46 2 8 21 61 316 -46 -15 13 15 -15 56 22 .. .. .. .. .. .. - 59 0 0 -15 16 19 2 8 14 61 314 -46 -14 54 49 -15 37 54 .. .. .. .. .. .. - 58 0 0 -14 58 6 2 8 7 60 313 -47 -14 36 38 -15 19 38 .. .. .. .. .. .. - 57 0 0 -14 40 6 2 8 0 60 311 -48 -14 18 39 -15 1 37 .. .. .. .. .. .. - 56 0 0 -14 22 20 2 7 53 59 309 -49 -14 0 55 -14 43 49 .. .. .. .. .. .. - 55 0 0 -14 4 49 2 7 47 59 308 -49 -13 43 25 -14 26 16 .. .. .. .. .. .. - 54 0 0 -13 47 32 2 7 40 58 306 -50 -13 26 10 -14 8 58 .. .. .. .. .. .. - 53 0 0 -13 30 30 2 7 33 58 305 -51 -13 9 10 -13 51 55 .. .. .. .. .. .. - 52 0 0 -13 13 44 2 7 27 57 303 -51 -12 52 26 -13 35 7 .. .. .. .. .. .. - 51 0 0 -12 57 14 2 7 20 56 302 -52 -12 35 57 -13 18 35 .. .. .. .. .. .. - 50 0 0 -12 41 0 2 7 13 56 300 -53 -12 19 45 -13 2 19 .. .. .. .. .. .. - 49 0 0 -12 25 2 2 7 7 55 299 -53 -12 3 48 -12 46 19 .. .. .. .. .. .. - 48 0 0 -12 9 21 2 7 0 54 298 -54 -11 48 9 -12 30 37 .. .. .. .. .. .. - 47 0 0 -11 53 57 2 6 54 54 297 -55 -11 32 46 -12 15 11 .. .. .. .. .. .. - 46 0 0 -11 38 50 2 6 48 53 296 -55 -11 17 41 -12 0 2 .. .. .. .. .. .. - 45 0 0 -11 24 0 2 6 41 52 295 -56 -11 2 53 -11 45 11 .. .. .. .. .. .. - 44 0 0 -11 9 29 2 6 35 51 294 -56 -10 48 23 -11 30 38 .. .. .. .. .. .. - 43 0 0 -10 55 16 2 6 29 51 293 -57 -10 34 11 -11 16 23 .. .. .. .. .. .. - 42 0 0 -10 41 20 2 6 23 50 292 -57 -10 20 18 -11 2 27 .. .. .. .. .. .. - 41 0 0 -10 27 44 2 6 17 49 291 -57 -10 6 43 -10 48 49 .. .. .. .. .. .. - 40 0 0 -10 14 26 2 6 11 48 291 -58 - 9 53 27 -10 35 30 .. .. .. .. .. .. - 39 0 0 -10 1 28 2 6 5 47 290 -58 - 9 40 30 -10 22 30 .. .. .. .. .. .. - 38 0 0 - 9 48 49 2 5 59 46 289 -59 - 9 27 52 -10 9 49 .. .. .. .. .. .. - 37 0 0 - 9 36 29 2 5 54 46 288 -59 - 9 15 34 - 9 57 28 .. .. .. .. .. .. - 36 0 0 - 9 24 29 2 5 48 45 288 -59 - 9 3 35 - 9 45 27 .. .. .. .. .. .. - 35 0 0 - 9 12 49 2 5 43 44 287 -59 - 8 51 57 - 9 33 46 .. .. .. .. .. .. - 34 0 0 - 9 1 29 2 5 37 43 286 -60 - 8 40 38 - 9 22 24 .. .. .. .. .. .. - 33 0 0 - 8 50 30 2 5 32 42 286 -60 - 8 29 40 - 9 11 24 .. .. .. .. .. .. - 32 0 0 - 8 39 51 2 5 27 41 285 -60 - 8 19 2 - 9 0 43 .. .. .. .. .. .. - 31 0 0 - 8 29 33 2 5 21 40 285 -60 - 8 8 45 - 8 50 24 .. .. .. .. .. .. - 30 0 0 - 8 19 35 2 5 16 39 284 -60 - 7 58 49 - 8 40 25 .. .. .. .. .. .. - 29 0 0 - 8 9 59 2 5 11 39 284 -60 - 7 49 14 - 8 30 48 .. .. .. .. .. .. - 28 0 0 - 8 0 44 2 5 7 38 284 -60 - 7 40 0 - 8 21 32 .. .. .. .. .. .. - 27 0 0 - 7 51 50 2 5 2 37 283 -60 - 7 31 7 - 8 12 37 .. .. .. .. .. .. - 26 0 0 - 7 43 18 2 4 57 36 283 -60 - 7 22 36 - 8 4 4 .. .. .. .. .. .. - 25 0 0 - 7 35 7 2 4 53 35 282 -60 - 7 14 26 - 7 55 52 .. .. .. .. .. .. - 24 0 0 - 7 27 19 2 4 48 34 282 -59 - 7 6 39 - 7 48 3 .. .. .. .. .. .. - 23 0 0 - 7 19 52 2 4 44 33 282 -59 - 6 59 13 - 7 40 35 .. .. .. .. .. .. - 22 0 0 - 7 12 47 2 4 40 32 281 -59 - 6 52 9 - 7 33 29 .. .. .. .. .. .. - 21 0 0 - 7 6 5 2 4 35 31 281 -59 - 6 45 27 - 7 26 46 .. .. .. .. .. .. - 20 0 0 - 6 59 44 2 4 31 30 281 -58 - 6 39 7 - 7 20 25 .. .. .. .. .. .. - 19 0 0 - 6 53 46 2 4 27 29 280 -58 - 6 33 10 - 7 14 26 .. .. .. .. .. .. - 18 0 0 - 6 48 11 2 4 24 28 280 -58 - 6 27 36 - 7 8 50 .. .. .. .. .. .. - 17 0 0 - 6 42 58 2 4 20 27 280 -57 - 6 22 23 - 7 3 37 .. .. .. .. .. .. - 16 0 0 - 6 38 8 2 4 16 27 280 -57 - 6 17 34 - 6 58 47 .. .. .. .. .. .. - 15 0 0 - 6 33 41 2 4 13 26 279 -56 - 6 13 7 - 6 54 19 .. .. .. .. .. .. - 14 0 0 - 6 29 37 2 4 10 25 279 -56 - 6 9 4 - 6 50 14 .. .. .. .. .. .. - 13 0 0 - 6 25 56 2 4 6 24 279 -55 - 6 5 23 - 6 46 33 .. .. .. .. .. .. - 12 0 0 - 6 22 38 2 4 3 23 279 -55 - 6 2 5 - 6 43 14 .. .. .. .. .. .. - 11 0 0 - 6 19 43 2 4 0 22 279 -54 - 5 59 10 - 6 40 19 .. .. .. .. .. .. - 10 0 0 - 6 17 11 2 3 57 21 278 -54 - 5 56 39 - 6 37 47 .. .. .. .. .. .. - 9 0 0 - 6 15 3 2 3 55 20 278 -53 - 5 54 31 - 6 35 38 .. .. .. .. .. .. - 8 0 0 - 6 13 18 2 3 52 19 278 -52 - 5 52 46 - 6 33 53 .. .. .. .. .. .. - 7 0 0 - 6 11 56 2 3 50 18 278 -52 - 5 51 24 - 6 32 31 .. .. .. .. .. .. - 6 0 0 - 6 10 58 2 3 47 17 278 -51 - 5 50 26 - 6 31 33 .. .. .. .. .. .. - 5 0 0 - 6 10 23 2 3 45 16 278 -50 - 5 49 51 - 6 30 58 .. .. .. .. .. .. - 4 0 0 - 6 10 12 2 3 43 15 278 -50 - 5 49 40 - 6 30 47 .. .. .. .. .. .. - 3 0 0 - 6 10 24 2 3 41 14 277 -49 - 5 49 52 - 6 31 0 .. .. .. .. .. .. - 2 0 0 - 6 11 0 2 3 39 13 277 -48 - 5 50 28 - 6 31 36 .. .. .. .. .. .. - 1 0 0 - 6 12 0 2 3 37 12 277 -48 - 5 51 28 - 6 32 36 .. .. .. .. .. .. 0 0 0 - 6 13 24 2 3 36 11 277 -47 - 5 52 51 - 6 34 0 .. .. .. .. .. .. 1 0 0 - 6 15 11 2 3 34 10 277 -46 - 5 54 38 - 6 35 47 .. .. .. .. .. .. 2 0 0 - 6 17 22 2 3 33 9 277 -45 - 5 56 48 - 6 37 59 .. .. .. .. .. .. 3 0 0 - 6 19 56 2 3 32 8 277 -44 - 5 59 23 - 6 40 34 .. .. .. .. .. .. 4 0 0 - 6 22 55 2 3 31 7 277 -44 - 6 2 20 - 6 43 33 .. .. .. .. .. .. 5 0 0 - 6 26 17 2 3 30 6 276 -43 - 6 5 42 - 6 46 56 .. .. .. .. .. .. 6 0 0 - 6 30 3 2 3 29 5 276 -42 - 6 9 28 - 6 50 42 .. .. .. .. .. .. 7 0 0 - 6 34 13 2 3 29 4 276 -41 - 6 13 37 - 6 54 53 .. .. .. .. .. .. 8 0 0 - 6 38 46 2 3 28 3 276 -40 - 6 18 9 - 6 59 27 .. .. .. .. .. .. 9 0 0 - 6 43 43 2 3 28 2 276 -39 - 6 23 6 - 7 4 25 .. .. .. .. .. .. 10 0 0 - 6 49 4 2 3 27 1 276 -39 - 6 28 26 - 7 9 47 .. .. .. .. .. .. 11 0 0 - 6 54 49 2 3 27 0 276 -38 - 6 34 9 - 7 15 32 .. .. .. .. .. .. Uncertainty in time = +/- 23036 secs Prediction of 2012 Nov 16.0 Data for the target star ------------------------ * name: UCAC2 33686014 * constellation : Pisces * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 01 23 20.8301 DE: +05 34 51.276 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .025, .025 ) * V mag [mag]: 11.6 * B mag [mag]: 0.0 * Diameter [mas]: 0 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (0) 2005 TO74 approx. diameter [km]: 68 approx. diameter ["]: .003 distance from Earth [AU]: 29.38200 * orbital information: orbit source: Preston date of fit: 2011 May 06 source of used astrometry: MPC (via Astdys) number of used observations: 25 number of rejected observations: 0 time covered by the observations: 2005 Oct 08 - 2007 Sep 18 1 sigma uncertainty ellipse (major, minor, PA): 16.712, 2.541, 73° remarks: * orbital elements for (0) 2005 TO74 : Mean anomaly = 279.22720593 deg Arg. of pericenter = 300.54161444 deg Long. of node = 169.38607317 deg Inclination = 5.25115970 deg Eccentricity = 0.05563905 Semimajor axis = 30.25608472 AU Perihelion dist = 28.57266486 AU Mag: H = 8.45, G = 0.00 Epoch of elements : MJD 56260.09000000 TDT (2012 Nov 29.090) ------ occelmnt file for Occult BEGIN ----------------------------------- 2012 Nov 29 0 2005 TO74 2h 9.6m UT 11.6 1 23 20.830 5 34 51.28UCAC2 33686014 0.0 23.2 68 4.4 29.382 -0.165 -0.86 -79.9418 5.581 144.68 -21.52 2.1604 0.14579 -0.41611 -8.23778 -2.87710 0.00401 0.00185 2000 279.16745120121119.00000300.541614169.386073 5.2511600.0556390530.256084728.5726649 8.5 5.00.00 RATE 0.0592220 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 16.712 2.541 73873.11 2.783 0 0 1-4 056247.0020121129_686014 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2011 May 06, 03:07 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org