IOTA/IOTA-ES occultation update for (3044) Saltykov / TYC 1721-00122-1 event on 2012 Oct 20, 19:08 UT Visible from China, India Summary ------- On 2012 Oct 20 UT, the 27 km diameter asteroid (3044) Saltykov will occult a 9.5 mag star in the constellation Pegasus for observers along a path across China, India. In the case of an occultation, the combined light of the asteroid and the star will drop by 6.2 mag to 15.7 mag (the magnitude of the asteroid) for at most 2.9 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: 24 * date and approx. time of event: 2012 Oct 20, 18:59 - 2012 Oct 20, 19:16 UT * geocentric midpoint of event [JD]: 2456221.29716667 * magnitude of target star: 9.5 * magnitude drop [mag]: 6.2 * estimated maximum duration [s]: 2.9 * Moon: 35 % sunlit, 81° distance * Sun: 150° distance * rough path description: China, India The occultation path -------------------- * approximate projected width [km]: 34 * 1 sigma uncertainty interval [path widths]: +/- 2.80 * 1 sigma uncertainty interval [seconds]: +/- 7.5 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- .069 +/- .050) * 1 sigma uncertainty ellipse (major, minor, PA): ( .071", .049", 75° ) * approx speed of asteroid's shadow [km/s]: 9.4805 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 1721-00122-1 by 3044 Saltykov on 2012 Oct 20 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 72 43 4 -70 0 0 19 16 41 1 325 -9 72 10 6 73 16 21 ... .. .. ... .. .. 70 50 39 -69 0 0 19 16 41 2 327 -10 70 20 7 71 21 27 ... .. .. 74 18 52 69 13 31 -68 0 0 19 16 40 3 328 -11 68 45 0 69 42 15 ... .. .. 72 27 10 67 48 58 -67 0 0 19 16 39 4 329 -12 67 22 10 68 15 56 ... .. .. 70 50 22 66 34 55 -66 0 0 19 16 38 5 331 -13 66 9 36 67 0 23 63 50 20 69 25 53 65 29 48 -65 0 0 19 16 36 6 332 -14 65 5 46 65 53 57 62 53 24 68 11 43 64 32 21 -64 0 0 19 16 34 7 332 -15 64 9 27 64 55 21 62 3 11 67 6 20 63 41 32 -63 0 0 19 16 32 8 333 -16 63 19 39 64 3 31 61 18 49 66 8 31 62 56 32 -62 0 0 19 16 30 9 334 -17 62 35 33 63 17 36 60 39 36 65 17 16 62 16 39 -61 0 0 19 16 27 10 334 -18 61 56 29 62 36 54 60 4 57 64 31 47 61 41 19 -60 0 0 19 16 24 12 335 -19 61 21 54 62 0 49 59 34 22 63 51 23 61 10 3 -59 0 0 19 16 21 13 335 -20 60 51 18 61 28 52 59 7 25 63 15 31 60 42 25 -58 0 0 19 16 18 14 336 -21 60 24 17 61 0 38 58 43 45 62 43 43 60 18 6 -57 0 0 19 16 14 15 336 -22 60 0 31 60 35 44 58 23 3 62 15 33 59 56 46 -56 0 0 19 16 10 16 336 -23 59 39 42 60 13 53 58 5 4 61 50 42 59 38 9 -55 0 0 19 16 6 17 336 -24 59 21 34 59 54 47 57 49 33 61 28 51 59 22 3 -54 0 0 19 16 1 18 337 -25 59 5 54 59 38 14 57 36 18 61 9 44 59 8 14 -53 0 0 19 15 57 19 337 -26 58 52 30 59 24 1 57 25 9 60 53 9 58 56 33 -52 0 0 19 15 52 19 337 -27 58 41 12 59 11 56 57 15 56 60 38 53 58 46 49 -51 0 0 19 15 47 20 337 -28 58 31 50 59 1 51 57 8 31 60 26 46 58 38 56 -50 0 0 19 15 41 21 337 -29 58 24 16 58 53 38 57 2 46 60 16 38 58 32 44 -49 0 0 19 15 36 22 337 -30 58 18 23 58 47 8 56 58 35 60 8 22 58 28 8 -48 0 0 19 15 30 23 337 -31 58 14 4 58 42 15 56 55 52 60 1 50 58 25 3 -47 0 0 19 15 24 24 337 -32 58 11 15 58 38 53 56 54 32 59 56 55 58 23 22 -46 0 0 19 15 18 25 337 -33 58 9 49 58 36 56 56 54 31 59 53 32 58 23 1 -45 0 0 19 15 11 26 336 -34 58 9 43 58 36 21 56 55 43 59 51 35 58 23 57 -44 0 0 19 15 5 27 336 -35 58 10 52 58 37 3 56 58 5 59 51 1 58 26 4 -43 0 0 19 14 58 28 336 -36 58 13 12 58 38 58 57 1 35 59 51 44 58 29 20 -42 0 0 19 14 51 29 336 -37 58 16 40 58 42 3 57 6 8 59 53 41 58 33 43 -41 0 0 19 14 44 30 335 -38 58 21 13 58 46 14 57 11 42 59 56 49 58 39 8 -40 0 0 19 14 36 31 335 -39 58 26 49 58 51 29 57 18 15 60 1 5 58 45 34 -39 0 0 19 14 28 32 335 -40 58 33 24 58 57 45 57 25 45 60 6 26 58 52 58 -38 0 0 19 14 21 32 334 -41 58 40 58 59 5 0 57 34 10 60 12 49 59 1 19 -37 0 0 19 14 13 33 334 -42 58 49 27 59 13 12 57 43 27 60 20 13 59 10 35 -36 0 0 19 14 4 34 334 -43 58 58 51 59 22 20 57 53 35 60 28 35 59 20 44 -35 0 0 19 13 56 35 333 -44 59 9 8 59 32 22 58 4 34 60 37 53 59 31 45 -34 0 0 19 13 47 36 333 -45 59 20 16 59 43 15 58 16 21 60 48 7 59 43 36 -33 0 0 19 13 38 37 332 -46 59 32 14 59 55 0 58 28 55 60 59 15 59 56 18 -32 0 0 19 13 29 37 332 -47 59 45 1 60 7 35 58 42 17 61 11 15 60 9 48 -31 0 0 19 13 20 38 331 -48 59 58 37 60 21 0 58 56 24 61 24 7 60 24 5 -30 0 0 19 13 11 39 331 -49 60 13 0 60 35 12 59 11 16 61 37 50 60 39 10 -29 0 0 19 13 1 40 330 -50 60 28 10 60 50 12 59 26 53 61 52 22 60 55 2 -28 0 0 19 12 51 41 329 -51 60 44 6 61 5 59 59 43 15 62 7 44 61 11 40 -27 0 0 19 12 41 41 328 -52 61 0 48 61 22 33 60 0 20 62 23 55 61 29 4 -26 0 0 19 12 31 42 328 -53 61 18 16 61 39 54 60 18 8 62 40 54 61 47 14 -25 0 0 19 12 21 43 327 -54 61 36 29 61 58 0 60 36 41 62 58 42 62 6 9 -24 0 0 19 12 10 43 326 -55 61 55 28 62 16 52 60 55 56 63 17 17 62 25 51 -23 0 0 19 12 0 44 325 -56 62 15 12 62 36 31 61 15 55 63 36 41 62 46 18 -22 0 0 19 11 49 45 324 -57 62 35 41 62 56 56 61 36 38 63 56 53 63 7 31 -21 0 0 19 11 38 45 323 -58 62 56 56 63 18 7 61 58 4 64 17 53 63 29 30 -20 0 0 19 11 27 46 322 -59 63 18 57 63 40 4 62 20 14 64 39 41 63 52 16 -19 0 0 19 11 16 47 321 -60 63 41 44 64 2 49 62 43 9 65 2 19 64 15 49 -18 0 0 19 11 4 47 320 -61 64 5 19 64 26 22 63 6 49 65 25 46 64 40 11 -17 0 0 19 10 53 48 319 -62 64 29 40 64 50 42 63 31 15 65 50 3 65 5 20 -16 0 0 19 10 41 48 318 -63 64 54 50 65 15 52 63 56 27 66 15 11 65 31 20 -15 0 0 19 10 29 49 317 -64 65 20 50 65 41 51 64 22 26 66 41 11 65 58 9 -14 0 0 19 10 17 49 316 -65 65 47 39 66 8 41 64 49 14 67 8 4 66 25 50 -13 0 0 19 10 5 50 315 -66 66 15 19 66 36 22 65 16 50 67 35 50 66 54 24 -12 0 0 19 9 53 50 313 -67 66 43 51 67 4 57 65 45 17 68 4 32 67 23 51 -11 0 0 19 9 40 50 312 -68 67 13 18 67 34 26 66 14 36 68 34 10 67 54 14 -10 0 0 19 9 28 51 311 -69 67 43 39 68 4 51 66 44 47 69 4 46 68 25 34 - 9 0 0 19 9 15 51 309 -70 68 14 56 68 36 13 67 15 53 69 36 22 68 57 53 - 8 0 0 19 9 2 51 308 -71 68 47 13 69 8 35 67 47 55 70 8 59 69 31 13 - 7 0 0 19 8 49 51 306 -72 69 20 29 69 41 58 68 20 55 70 42 40 70 5 35 - 6 0 0 19 8 36 52 305 -73 69 54 48 70 16 24 68 54 55 71 17 27 70 41 3 - 5 0 0 19 8 23 52 304 -74 70 30 12 70 51 56 69 29 58 71 53 23 71 17 39 - 4 0 0 19 8 10 52 302 -75 71 6 44 71 28 36 70 6 5 72 30 30 71 55 26 - 3 0 0 19 7 56 52 301 -76 71 44 25 72 6 28 70 43 19 73 8 51 72 34 26 - 2 0 0 19 7 43 52 299 -77 72 23 20 72 45 34 71 21 44 73 48 31 73 14 44 - 1 0 0 19 7 29 52 298 -78 73 3 32 73 25 58 72 1 23 74 29 31 73 56 23 0 0 0 19 7 15 52 296 -78 73 45 4 74 7 44 72 42 18 75 11 57 74 39 28 1 0 0 19 7 1 51 295 -79 74 28 1 74 50 56 73 24 35 75 55 54 Latitude Latitude Latitude Latitude 75 0 0 1 27 55 19 6 55 51 294 -79 1 43 24 1 12 20 3 8 31 - 0 16 42 76 0 0 2 46 57 19 6 36 51 292 -80 3 1 59 2 31 49 4 24 44 1 5 30 77 0 0 4 2 27 19 6 18 51 290 -80 4 17 5 3 47 44 5 37 40 2 23 53 78 0 0 5 14 37 19 6 1 50 289 -80 5 28 53 5 0 18 6 47 28 3 38 42 79 0 0 6 23 39 19 5 44 50 287 -80 6 37 34 6 9 41 7 54 18 4 50 9 80 0 0 7 29 43 19 5 28 49 286 -79 7 43 18 7 16 4 8 58 19 5 58 27 81 0 0 8 32 56 19 5 12 48 284 -79 8 46 14 8 19 35 9 59 39 7 3 45 82 0 0 9 33 28 19 4 57 48 283 -78 9 46 29 9 20 24 10 58 25 8 6 12 83 0 0 10 31 27 19 4 42 47 282 -77 10 44 12 10 18 38 11 54 45 9 5 57 84 0 0 11 26 58 19 4 28 46 281 -76 11 39 29 11 14 24 12 48 43 10 3 8 85 0 0 12 20 8 19 4 14 46 280 -75 12 32 26 12 7 48 13 40 27 10 57 52 86 0 0 13 11 4 19 4 1 45 279 -74 13 23 8 12 58 56 14 30 1 11 50 15 87 0 0 13 59 50 19 3 48 44 279 -73 14 11 43 13 47 55 15 17 31 12 40 23 88 0 0 14 46 32 19 3 36 43 278 -72 14 58 13 14 34 48 16 3 1 13 28 21 89 0 0 15 31 14 19 3 24 42 278 -71 15 42 45 15 19 40 16 46 35 14 14 16 90 0 0 16 14 0 19 3 12 42 277 -70 16 25 21 16 2 37 17 28 18 14 58 10 91 0 0 16 54 56 19 3 1 41 277 -69 17 6 7 16 43 42 18 8 14 15 40 9 92 0 0 17 34 4 19 2 50 40 276 -68 17 45 7 17 22 59 18 46 25 16 20 17 93 0 0 18 11 28 19 2 40 39 276 -67 18 22 23 18 0 31 19 22 56 16 58 38 94 0 0 18 47 11 19 2 30 38 276 -66 18 57 58 18 36 23 19 57 49 17 35 15 95 0 0 19 21 18 19 2 20 37 276 -65 19 31 57 19 10 36 20 31 8 18 10 11 96 0 0 19 53 49 19 2 11 37 275 -64 20 4 22 19 43 15 21 2 55 18 43 30 97 0 0 20 24 49 19 2 1 36 275 -63 20 35 15 20 14 21 21 33 12 19 15 14 98 0 0 20 54 20 19 1 53 35 275 -62 21 4 40 20 43 58 22 2 4 19 45 27 99 0 0 21 22 24 19 1 44 34 275 -61 21 32 38 21 12 8 22 29 30 20 14 10 100 0 0 21 49 4 19 1 36 33 275 -60 21 59 13 21 38 53 22 55 34 20 41 27 101 0 0 22 14 21 19 1 28 32 275 -59 22 24 25 22 4 16 23 20 19 21 7 19 102 0 0 22 38 18 19 1 20 31 275 -58 22 48 17 22 28 17 23 43 44 21 31 48 103 0 0 23 0 56 19 1 13 31 275 -57 23 10 50 22 51 0 24 5 53 21 54 57 104 0 0 23 22 17 19 1 5 30 276 -56 23 32 7 23 12 26 24 26 47 22 16 47 105 0 0 23 42 23 19 0 58 29 276 -55 23 52 10 23 32 36 24 46 28 22 37 19 106 0 0 24 1 16 19 0 52 28 276 -54 24 10 58 23 51 32 25 4 56 22 56 36 107 0 0 24 18 55 19 0 45 27 276 -53 24 28 35 24 9 15 25 22 14 23 14 39 108 0 0 24 35 24 19 0 39 26 276 -52 24 45 0 24 25 47 25 38 23 23 31 29 109 0 0 24 50 43 19 0 33 25 277 -51 25 0 16 24 41 8 25 53 23 23 47 7 110 0 0 25 4 53 19 0 27 25 277 -50 25 14 23 24 55 21 26 7 15 24 1 35 111 0 0 25 17 54 19 0 22 24 277 -50 25 27 22 25 8 25 26 20 1 24 14 53 112 0 0 25 29 49 19 0 16 23 277 -49 25 39 15 25 20 22 26 31 42 24 27 2 113 0 0 25 40 38 19 0 11 22 278 -48 25 50 2 25 31 12 26 42 18 24 38 4 114 0 0 25 50 20 19 0 6 21 278 -47 25 59 43 25 40 57 26 51 50 24 47 58 115 0 0 25 58 58 19 0 2 20 278 -46 26 8 19 25 49 36 27 0 18 24 56 46 116 0 0 26 6 32 18 59 57 19 279 -45 26 15 51 25 57 11 27 7 43 25 4 28 117 0 0 26 13 1 18 59 53 19 279 -44 26 22 20 26 3 42 27 14 6 25 11 5 118 0 0 26 18 27 18 59 49 18 279 -43 26 27 45 26 9 8 27 19 26 25 16 36 119 0 0 26 22 49 18 59 45 17 280 -42 26 32 6 26 13 31 27 23 44 25 21 3 120 0 0 26 26 9 18 59 41 16 280 -42 26 35 25 26 16 51 27 27 1 25 24 25 121 0 0 26 28 25 18 59 37 15 280 -41 26 37 41 26 19 7 27 29 16 25 26 42 122 0 0 26 29 38 18 59 34 14 281 -40 26 38 54 26 20 20 27 30 29 25 27 55 123 0 0 26 29 48 18 59 31 13 281 -39 26 39 5 26 20 30 27 30 41 25 28 3 124 0 0 26 28 55 18 59 28 13 282 -38 26 38 12 26 19 37 27 29 51 25 27 7 125 0 0 26 26 58 18 59 25 12 282 -37 26 36 16 26 17 39 27 27 58 25 25 6 126 0 0 26 23 58 18 59 22 11 282 -36 26 33 17 26 14 38 27 25 4 25 21 59 127 0 0 26 19 53 18 59 20 10 283 -35 26 29 13 26 10 32 27 21 7 25 17 47 128 0 0 26 14 44 18 59 18 9 283 -34 26 24 5 26 5 22 27 16 6 25 12 28 129 0 0 26 8 30 18 59 16 8 284 -34 26 17 52 25 59 5 27 10 2 25 6 3 130 0 0 26 1 9 18 59 14 7 284 -33 26 10 34 25 51 43 27 2 54 24 58 30 131 0 0 25 52 42 18 59 12 6 285 -32 26 2 9 25 43 14 26 54 40 24 49 49 132 0 0 25 43 7 18 59 11 5 285 -31 25 52 37 25 33 37 .. .. .. 24 39 58 133 0 0 25 32 24 18 59 10 5 285 -30 25 41 56 25 22 51 .. .. .. 24 28 57 134 0 0 25 20 31 18 59 9 4 286 -29 25 30 6 25 10 55 .. .. .. 24 16 45 135 0 0 25 7 27 18 59 8 3 286 -28 25 17 5 24 57 48 .. .. .. 24 3 20 136 0 0 24 53 11 18 59 7 2 287 -27 25 2 53 24 43 29 .. .. .. 23 48 41 137 0 0 24 37 42 18 59 7 1 287 -26 24 47 27 24 27 56 .. .. .. 23 32 46 Uncertainty in time = +/- 9 secs Prediction of 2012 Oct 8.0 Data for the target star ------------------------ * name: TYC 1721-00122-1 * constellation : Pegasus * J2000 position with proper motion to date of event [h,m,s ; °,',"] RA: 23 39 05.6665 DE: +15 47 11.358 * position source: mpos:UCAC2 pm:UCAC2 * standard error: RA,DE ["]: ( .029, .025 ) * V mag [mag]: 9.5 * B mag [mag]: 11.1 * Diameter [mas]: 0 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (3044) Saltykov approx. diameter [km]: 27 approx. diameter ["]: .022 distance from Earth [AU]: 1.66100 * orbital information: orbit source: Preston date of fit: 2012 Oct 07 source of used astrometry: FASTT MPC (via Astdys) number of used observations: 808 number of rejected observations: 15 time covered by the observations: 1978 Jul 12 - 2012 Oct 02 1 sigma uncertainty ellipse (major, minor, PA): 0.065, 0.042, 72° remarks: * orbital elements for (3044) Saltykov : Mean anomaly = 44.18498073 deg Arg. of pericenter = 69.52324414 deg Long. of node = 242.61838783 deg Inclination = 13.53375422 deg Eccentricity = 0.15761937 Semimajor axis = 2.85121078 AU Perihelion dist = 2.40180474 AU Mag: H = 11.81, G = 0.15 Epoch of elements : MJD 56220.79700000 TDT (2012 Oct 20.797) ------ occelmnt file for Occult BEGIN ----------------------------------- 2012 Oct 20 3044 Saltykov 19h 7.9m UT 9.5 23 39 5.666 15 47 11.36TYC 1721-00122-1 11.2 15.7 27 2.9 1.661 -0.874 -25.34 38.1499 15.793 -110.81 -10.69 19.1320 0.55339 -0.27604 -2.38797 -4.78866 0.00292 -0.00028 2000 44.02181920121020.00000 69.523244242.618388 13.5337540.15761937 2.8512108 2.401804711.8 5.00.15 RATE 2.0471990 0.000000 0.000000 0.000000 0.0000000 0.0000000 0.0000000 Meas 0.071 0.049 75 3.80 0.063 0 0 5-2 056208.0020121020_0122-1 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2012 Oct 07, 19:06 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 425-688-9965 mailto: stevepr@acm.org